X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=blobdiff_plain;f=yaffs_guts.c;h=f4ae9deed727bb968a3db3db393a69e4986915db;hp=eea828a480e8f7e48927ff9b1f3a2dad60711610;hb=fe192b14d52d6c7d4722402686dcb553153916c3;hpb=a5bab2056ca3c68d3e15568f81a6e1d697d23da5 diff --git a/yaffs_guts.c b/yaffs_guts.c index eea828a..f4ae9de 100644 --- a/yaffs_guts.c +++ b/yaffs_guts.c @@ -33,87 +33,34 @@ #include "yaffs_nameval.h" #include "yaffs_allocator.h" +#include "yaffs_attribs.h" + /* Note YAFFS_GC_GOOD_ENOUGH must be <= YAFFS_GC_PASSIVE_THRESHOLD */ #define YAFFS_GC_GOOD_ENOUGH 2 #define YAFFS_GC_PASSIVE_THRESHOLD 4 #include "yaffs_ecc.h" +/* Forward declarations */ +static int yaffs_wr_data_obj(struct yaffs_obj *in, int inode_chunk, + const u8 * buffer, int n_bytes, int use_reserve); -/* Robustification (if it ever comes about...) */ -static void yaffs_retire_block(yaffs_dev_t *dev, int flash_block); -static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk, - int erased_ok); -static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk, - const __u8 *data, - const yaffs_ext_tags *tags); -static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk, - const yaffs_ext_tags *tags); - -/* Other local prototypes */ -static void yaffs_update_parent(yaffs_obj_t *obj); -static int yaffs_unlink_obj(yaffs_obj_t *obj); -static int yaffs_obj_cache_dirty(yaffs_obj_t *obj); - -static int yaffs_write_new_chunk(yaffs_dev_t *dev, - const __u8 *buffer, - yaffs_ext_tags *tags, - int use_reserver); - - -static yaffs_obj_t *yaffs_new_obj(yaffs_dev_t *dev, int number, - yaffs_obj_type type); - - -static int yaffs_apply_xattrib_mod(yaffs_obj_t *obj, char *buffer, yaffs_xattr_mod *xmod); - -static void yaffs_remove_obj_from_dir(yaffs_obj_t *obj); -static int yaffs_check_structures(void); -static int yaffs_generic_obj_del(yaffs_obj_t *in); - -static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev, - int nand_chunk); - -static int yaffs_unlink_worker(yaffs_obj_t *obj); - -static int yaffs_tags_match(const yaffs_ext_tags *tags, int obj_id, - int chunk_obj); - -static int yaffs_alloc_chunk(yaffs_dev_t *dev, int use_reserver, - yaffs_block_info_t **block_ptr); - -static void yaffs_check_obj_details_loaded(yaffs_obj_t *in); - -static void yaffs_invalidate_whole_cache(yaffs_obj_t *in); -static void yaffs_invalidate_chunk_cache(yaffs_obj_t *object, int chunk_id); - -static int yaffs_find_chunk_in_file(yaffs_obj_t *in, int inode_chunk, - yaffs_ext_tags *tags); - -static int yaffs_verify_chunk_written(yaffs_dev_t *dev, - int nand_chunk, - const __u8 *data, - yaffs_ext_tags *tags); - - -static void yaffs_load_name_from_oh(yaffs_dev_t *dev,YCHAR *name, const YCHAR *oh_name, int buff_size); -static void yaffs_load_oh_from_name(yaffs_dev_t *dev,YCHAR *oh_name, const YCHAR *name); /* Function to calculate chunk and offset */ -static void yaffs_addr_to_chunk(yaffs_dev_t *dev, loff_t addr, int *chunk_out, - __u32 *offset_out) +static void yaffs_addr_to_chunk(struct yaffs_dev *dev, loff_t addr, + int *chunk_out, u32 * offset_out) { int chunk; - __u32 offset; + u32 offset; - chunk = (__u32)(addr >> dev->chunk_shift); + chunk = (u32) (addr >> dev->chunk_shift); if (dev->chunk_div == 1) { /* easy power of 2 case */ - offset = (__u32)(addr & dev->chunk_mask); + offset = (u32) (addr & dev->chunk_mask); } else { /* Non power-of-2 case */ @@ -121,8 +68,8 @@ static void yaffs_addr_to_chunk(yaffs_dev_t *dev, loff_t addr, int *chunk_out, chunk /= dev->chunk_div; - chunk_base = ((loff_t)chunk) * dev->data_bytes_per_chunk; - offset = (__u32)(addr - chunk_base); + chunk_base = ((loff_t) chunk) * dev->data_bytes_per_chunk; + offset = (u32) (addr - chunk_base); } *chunk_out = chunk; @@ -135,7 +82,7 @@ static void yaffs_addr_to_chunk(yaffs_dev_t *dev, loff_t addr, int *chunk_out, * be hellishly efficient. */ -static __u32 calc_shifts_ceiling(__u32 x) +static u32 calc_shifts_ceiling(u32 x) { int extra_bits; int shifts; @@ -158,16 +105,16 @@ static __u32 calc_shifts_ceiling(__u32 x) /* Function to return the number of shifts to get a 1 in bit 0 */ -static __u32 calc_shifts(__u32 x) +static u32 calc_shifts(u32 x) { - __u32 shifts; + u32 shifts; - shifts = 0; + shifts = 0; if (!x) return 0; - while (!(x&1)) { + while (!(x & 1)) { x >>= 1; shifts++; } @@ -175,29 +122,27 @@ static __u32 calc_shifts(__u32 x) return shifts; } - - /* * Temporary buffer manipulations. */ -static int yaffs_init_tmp_buffers(yaffs_dev_t *dev) +static int yaffs_init_tmp_buffers(struct yaffs_dev *dev) { int i; - __u8 *buf = (__u8 *)1; + u8 *buf = (u8 *) 1; memset(dev->temp_buffer, 0, sizeof(dev->temp_buffer)); for (i = 0; buf && i < YAFFS_N_TEMP_BUFFERS; i++) { dev->temp_buffer[i].line = 0; /* not in use */ dev->temp_buffer[i].buffer = buf = - YMALLOC_DMA(dev->param.total_bytes_per_chunk); + kmalloc(dev->param.total_bytes_per_chunk, GFP_NOFS); } return buf ? YAFFS_OK : YAFFS_FAIL; } -__u8 *yaffs_get_temp_buffer(yaffs_dev_t *dev, int line_no) +u8 *yaffs_get_temp_buffer(struct yaffs_dev * dev, int line_no) { int i, j; @@ -219,13 +164,11 @@ __u8 *yaffs_get_temp_buffer(yaffs_dev_t *dev, int line_no) } } - T(YAFFS_TRACE_BUFFERS, - (TSTR("Out of temp buffers at line %d, other held by lines:"), - line_no)); + yaffs_trace(YAFFS_TRACE_BUFFERS, + "Out of temp buffers at line %d, other held by lines:", + line_no); for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) - T(YAFFS_TRACE_BUFFERS, (TSTR(" %d "), dev->temp_buffer[i].line)); - - T(YAFFS_TRACE_BUFFERS, (TSTR(" " TENDSTR))); + yaffs_trace(YAFFS_TRACE_BUFFERS," %d", dev->temp_buffer[i].line); /* * If we got here then we have to allocate an unmanaged one @@ -233,12 +176,11 @@ __u8 *yaffs_get_temp_buffer(yaffs_dev_t *dev, int line_no) */ dev->unmanaged_buffer_allocs++; - return YMALLOC(dev->data_bytes_per_chunk); + return kmalloc(dev->data_bytes_per_chunk, GFP_NOFS); } -void yaffs_release_temp_buffer(yaffs_dev_t *dev, __u8 *buffer, - int line_no) +void yaffs_release_temp_buffer(struct yaffs_dev *dev, u8 * buffer, int line_no) { int i; @@ -253,10 +195,10 @@ void yaffs_release_temp_buffer(yaffs_dev_t *dev, __u8 *buffer, if (buffer) { /* assume it is an unmanaged one. */ - T(YAFFS_TRACE_BUFFERS, - (TSTR("Releasing unmanaged temp buffer in line %d" TENDSTR), - line_no)); - YFREE(buffer); + yaffs_trace(YAFFS_TRACE_BUFFERS, + "Releasing unmanaged temp buffer in line %d", + line_no); + kfree(buffer); dev->unmanaged_buffer_deallocs++; } @@ -265,7 +207,7 @@ void yaffs_release_temp_buffer(yaffs_dev_t *dev, __u8 *buffer, /* * Determine if we have a managed buffer. */ -int yaffs_is_managed_tmp_buffer(yaffs_dev_t *dev, const __u8 *buffer) +int yaffs_is_managed_tmp_buffer(struct yaffs_dev *dev, const u8 * buffer) { int i; @@ -282,23 +224,79 @@ int yaffs_is_managed_tmp_buffer(yaffs_dev_t *dev, const __u8 *buffer) if (buffer == dev->checkpt_buffer) return 1; - T(YAFFS_TRACE_ALWAYS, - (TSTR("yaffs: unmaged buffer detected.\n" TENDSTR))); + yaffs_trace(YAFFS_TRACE_ALWAYS, + "yaffs: unmaged buffer detected."); return 0; } /* - * Verification code + * Functions for robustisizing TODO + * */ +static void yaffs_handle_chunk_wr_ok(struct yaffs_dev *dev, int nand_chunk, + const u8 * data, + const struct yaffs_ext_tags *tags) +{ + dev = dev; + nand_chunk = nand_chunk; + data = data; + tags = tags; +} + +static void yaffs_handle_chunk_update(struct yaffs_dev *dev, int nand_chunk, + const struct yaffs_ext_tags *tags) +{ + dev = dev; + nand_chunk = nand_chunk; + tags = tags; +} + +void yaffs_handle_chunk_error(struct yaffs_dev *dev, + struct yaffs_block_info *bi) +{ + if (!bi->gc_prioritise) { + bi->gc_prioritise = 1; + dev->has_pending_prioritised_gc = 1; + bi->chunk_error_strikes++; + + if (bi->chunk_error_strikes > 3) { + bi->needs_retiring = 1; /* Too many stikes, so retire this */ + yaffs_trace(YAFFS_TRACE_ALWAYS, "yaffs: Block struck out"); + + } + } +} + +static void yaffs_handle_chunk_wr_error(struct yaffs_dev *dev, int nand_chunk, + int erased_ok) +{ + int flash_block = nand_chunk / dev->param.chunks_per_block; + struct yaffs_block_info *bi = yaffs_get_block_info(dev, flash_block); + + yaffs_handle_chunk_error(dev, bi); + + if (erased_ok) { + /* Was an actual write failure, so mark the block for retirement */ + bi->needs_retiring = 1; + yaffs_trace(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, + "**>> Block %d needs retiring", flash_block); + } + /* Delete the chunk */ + yaffs_chunk_del(dev, nand_chunk, 1, __LINE__); + yaffs_skip_rest_of_block(dev); +} +/* + * Verification code + */ /* * Simple hash function. Needs to have a reasonable spread */ -static Y_INLINE int yaffs_hash_fn(int n) +static inline int yaffs_hash_fn(int n) { n = abs(n); return n % YAFFS_NOBJECT_BUCKETS; @@ -309,22 +307,21 @@ static Y_INLINE int yaffs_hash_fn(int n) * Note that root might have a presence in NAND if permissions are set. */ -yaffs_obj_t *yaffs_root(yaffs_dev_t *dev) +struct yaffs_obj *yaffs_root(struct yaffs_dev *dev) { return dev->root_dir; } -yaffs_obj_t *yaffs_lost_n_found(yaffs_dev_t *dev) +struct yaffs_obj *yaffs_lost_n_found(struct yaffs_dev *dev) { return dev->lost_n_found; } - /* * Erased NAND checking functions */ -int yaffs_check_ff(__u8 *buffer, int n_bytes) +int yaffs_check_ff(u8 * buffer, int n_bytes) { /* Horrible, slow implementation */ while (n_bytes--) { @@ -335,12 +332,11 @@ int yaffs_check_ff(__u8 *buffer, int n_bytes) return 1; } -static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev, - int nand_chunk) +static int yaffs_check_chunk_erased(struct yaffs_dev *dev, int nand_chunk) { int retval = YAFFS_OK; - __u8 *data = yaffs_get_temp_buffer(dev, __LINE__); - yaffs_ext_tags tags; + u8 *data = yaffs_get_temp_buffer(dev, __LINE__); + struct yaffs_ext_tags tags; int result; result = yaffs_rd_chunk_tags_nand(dev, nand_chunk, data, &tags); @@ -348,9 +344,9 @@ static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev, if (tags.ecc_result > YAFFS_ECC_RESULT_NO_ERROR) retval = YAFFS_FAIL; - if (!yaffs_check_ff(data, dev->data_bytes_per_chunk) || tags.chunk_used) { - T(YAFFS_TRACE_NANDACCESS, - (TSTR("Chunk %d not erased" TENDSTR), nand_chunk)); + if (!yaffs_check_ff(data, dev->data_bytes_per_chunk) || + tags.chunk_used) { + yaffs_trace(YAFFS_TRACE_NANDACCESS, "Chunk %d not erased", nand_chunk); retval = YAFFS_FAIL; } @@ -360,22 +356,21 @@ static int yaffs_check_chunk_erased(struct yaffs_dev_s *dev, } - -static int yaffs_verify_chunk_written(yaffs_dev_t *dev, - int nand_chunk, - const __u8 *data, - yaffs_ext_tags *tags) +static int yaffs_verify_chunk_written(struct yaffs_dev *dev, + int nand_chunk, + const u8 * data, + struct yaffs_ext_tags *tags) { int retval = YAFFS_OK; - yaffs_ext_tags temp_tags; - __u8 *buffer = yaffs_get_temp_buffer(dev,__LINE__); + struct yaffs_ext_tags temp_tags; + u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__); int result; - - result = yaffs_rd_chunk_tags_nand(dev,nand_chunk,buffer,&temp_tags); - if(memcmp(buffer,data,dev->data_bytes_per_chunk) || - temp_tags.obj_id != tags->obj_id || - temp_tags.chunk_id != tags->chunk_id || - temp_tags.n_bytes != tags->n_bytes) + + result = yaffs_rd_chunk_tags_nand(dev, nand_chunk, buffer, &temp_tags); + if (memcmp(buffer, data, dev->data_bytes_per_chunk) || + temp_tags.obj_id != tags->obj_id || + temp_tags.chunk_id != tags->chunk_id || + temp_tags.n_bytes != tags->n_bytes) retval = YAFFS_FAIL; yaffs_release_temp_buffer(dev, buffer, __LINE__); @@ -383,10 +378,151 @@ static int yaffs_verify_chunk_written(yaffs_dev_t *dev, return retval; } -static int yaffs_write_new_chunk(struct yaffs_dev_s *dev, - const __u8 *data, - yaffs_ext_tags *tags, - int use_reserver) + +int yaffs_check_alloc_available(struct yaffs_dev *dev, int n_chunks) +{ + int reserved_chunks; + int reserved_blocks = dev->param.n_reserved_blocks; + int checkpt_blocks; + + checkpt_blocks = yaffs_calc_checkpt_blocks_required(dev); + + reserved_chunks = + ((reserved_blocks + checkpt_blocks) * dev->param.chunks_per_block); + + return (dev->n_free_chunks > (reserved_chunks + n_chunks)); +} + +static int yaffs_find_alloc_block(struct yaffs_dev *dev) +{ + int i; + + struct yaffs_block_info *bi; + + if (dev->n_erased_blocks < 1) { + /* Hoosterman we've got a problem. + * Can't get space to gc + */ + yaffs_trace(YAFFS_TRACE_ERROR, + "yaffs tragedy: no more erased blocks" ); + + return -1; + } + + /* Find an empty block. */ + + for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) { + dev->alloc_block_finder++; + if (dev->alloc_block_finder < dev->internal_start_block + || dev->alloc_block_finder > dev->internal_end_block) { + dev->alloc_block_finder = dev->internal_start_block; + } + + bi = yaffs_get_block_info(dev, dev->alloc_block_finder); + + if (bi->block_state == YAFFS_BLOCK_STATE_EMPTY) { + bi->block_state = YAFFS_BLOCK_STATE_ALLOCATING; + dev->seq_number++; + bi->seq_number = dev->seq_number; + dev->n_erased_blocks--; + yaffs_trace(YAFFS_TRACE_ALLOCATE, + "Allocated block %d, seq %d, %d left" , + dev->alloc_block_finder, dev->seq_number, + dev->n_erased_blocks); + return dev->alloc_block_finder; + } + } + + yaffs_trace(YAFFS_TRACE_ALWAYS, + "yaffs tragedy: no more erased blocks, but there should have been %d", + dev->n_erased_blocks); + + return -1; +} + +static int yaffs_alloc_chunk(struct yaffs_dev *dev, int use_reserver, + struct yaffs_block_info **block_ptr) +{ + int ret_val; + struct yaffs_block_info *bi; + + if (dev->alloc_block < 0) { + /* Get next block to allocate off */ + dev->alloc_block = yaffs_find_alloc_block(dev); + dev->alloc_page = 0; + } + + if (!use_reserver && !yaffs_check_alloc_available(dev, 1)) { + /* Not enough space to allocate unless we're allowed to use the reserve. */ + return -1; + } + + if (dev->n_erased_blocks < dev->param.n_reserved_blocks + && dev->alloc_page == 0) + yaffs_trace(YAFFS_TRACE_ALLOCATE, "Allocating reserve"); + + /* Next page please.... */ + if (dev->alloc_block >= 0) { + bi = yaffs_get_block_info(dev, dev->alloc_block); + + ret_val = (dev->alloc_block * dev->param.chunks_per_block) + + dev->alloc_page; + bi->pages_in_use++; + yaffs_set_chunk_bit(dev, dev->alloc_block, dev->alloc_page); + + dev->alloc_page++; + + dev->n_free_chunks--; + + /* If the block is full set the state to full */ + if (dev->alloc_page >= dev->param.chunks_per_block) { + bi->block_state = YAFFS_BLOCK_STATE_FULL; + dev->alloc_block = -1; + } + + if (block_ptr) + *block_ptr = bi; + + return ret_val; + } + + yaffs_trace(YAFFS_TRACE_ERROR, "!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!" ); + + return -1; +} + +static int yaffs_get_erased_chunks(struct yaffs_dev *dev) +{ + int n; + + n = dev->n_erased_blocks * dev->param.chunks_per_block; + + if (dev->alloc_block > 0) + n += (dev->param.chunks_per_block - dev->alloc_page); + + return n; + +} + +/* + * yaffs_skip_rest_of_block() skips over the rest of the allocation block + * if we don't want to write to it. + */ +void yaffs_skip_rest_of_block(struct yaffs_dev *dev) +{ + if (dev->alloc_block > 0) { + struct yaffs_block_info *bi = + yaffs_get_block_info(dev, dev->alloc_block); + if (bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING) { + bi->block_state = YAFFS_BLOCK_STATE_FULL; + dev->alloc_block = -1; + } + } +} + +static int yaffs_write_new_chunk(struct yaffs_dev *dev, + const u8 * data, + struct yaffs_ext_tags *tags, int use_reserver) { int attempts = 0; int write_ok = 0; @@ -395,7 +531,7 @@ static int yaffs_write_new_chunk(struct yaffs_dev_s *dev, yaffs2_checkpt_invalidate(dev); do { - yaffs_block_info_t *bi = 0; + struct yaffs_block_info *bi = 0; int erased_ok = 0; chunk = yaffs_alloc_chunk(dev, use_reserver, &bi); @@ -410,7 +546,7 @@ static int yaffs_write_new_chunk(struct yaffs_dev_s *dev, * * Check the first page we try to write in a block. * If the check passes then we don't need to check any - * more. If the check fails, we check again... + * more. If the check fails, we check again... * If the block has been erased, we don't need to check. * * However, if the block has been prioritised for gc, @@ -431,30 +567,30 @@ static int yaffs_write_new_chunk(struct yaffs_dev_s *dev, /* let's give it a try */ attempts++; - if(dev->param.always_check_erased) + if (dev->param.always_check_erased) bi->skip_erased_check = 0; if (!bi->skip_erased_check) { erased_ok = yaffs_check_chunk_erased(dev, chunk); if (erased_ok != YAFFS_OK) { - T(YAFFS_TRACE_ERROR, - (TSTR("**>> yaffs chunk %d was not erased" - TENDSTR), chunk)); + yaffs_trace(YAFFS_TRACE_ERROR, + "**>> yaffs chunk %d was not erased", + chunk); /* If not erased, delete this one, * skip rest of block and * try another chunk */ - yaffs_chunk_del(dev,chunk,1,__LINE__); - yaffs_skip_rest_of_block(dev); + yaffs_chunk_del(dev, chunk, 1, __LINE__); + yaffs_skip_rest_of_block(dev); continue; } } - write_ok = yaffs_wr_chunk_tags_nand(dev, chunk, - data, tags); + write_ok = yaffs_wr_chunk_tags_nand(dev, chunk, data, tags); - if(!bi->skip_erased_check) - write_ok = yaffs_verify_chunk_written(dev, chunk, data, tags); + if (!bi->skip_erased_check) + write_ok = + yaffs_verify_chunk_written(dev, chunk, data, tags); if (write_ok != YAFFS_OK) { /* Clean up aborted write, skip to next block and @@ -469,55 +605,55 @@ static int yaffs_write_new_chunk(struct yaffs_dev_s *dev, yaffs_handle_chunk_wr_ok(dev, chunk, data, tags); } while (write_ok != YAFFS_OK && - (yaffs_wr_attempts <= 0 || attempts <= yaffs_wr_attempts)); + (yaffs_wr_attempts <= 0 || attempts <= yaffs_wr_attempts)); if (!write_ok) chunk = -1; if (attempts > 1) { - T(YAFFS_TRACE_ERROR, - (TSTR("**>> yaffs write required %d attempts" TENDSTR), - attempts)); - + yaffs_trace(YAFFS_TRACE_ERROR, + "**>> yaffs write required %d attempts", + attempts); dev->n_retired_writes += (attempts - 1); } return chunk; } - - /* * Block retiring for handling a broken block. */ -static void yaffs_retire_block(yaffs_dev_t *dev, int flash_block) +static void yaffs_retire_block(struct yaffs_dev *dev, int flash_block) { - yaffs_block_info_t *bi = yaffs_get_block_info(dev, flash_block); + struct yaffs_block_info *bi = yaffs_get_block_info(dev, flash_block); yaffs2_checkpt_invalidate(dev); - - yaffs2_clear_oldest_dirty_seq(dev,bi); + + yaffs2_clear_oldest_dirty_seq(dev, bi); if (yaffs_mark_bad(dev, flash_block) != YAFFS_OK) { if (yaffs_erase_block(dev, flash_block) != YAFFS_OK) { - T(YAFFS_TRACE_ALWAYS, (TSTR( - "yaffs: Failed to mark bad and erase block %d" - TENDSTR), flash_block)); + yaffs_trace(YAFFS_TRACE_ALWAYS, + "yaffs: Failed to mark bad and erase block %d", + flash_block); } else { - yaffs_ext_tags tags; - int chunk_id = flash_block * dev->param.chunks_per_block; + struct yaffs_ext_tags tags; + int chunk_id = + flash_block * dev->param.chunks_per_block; - __u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__); + u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__); memset(buffer, 0xff, dev->data_bytes_per_chunk); yaffs_init_tags(&tags); tags.seq_number = YAFFS_SEQUENCE_BAD_BLOCK; if (dev->param.write_chunk_tags_fn(dev, chunk_id - - dev->chunk_offset, buffer, &tags) != YAFFS_OK) - T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Failed to " - TCONT("write bad block marker to block %d") - TENDSTR), flash_block)); + dev->chunk_offset, + buffer, + &tags) != YAFFS_OK) + yaffs_trace(YAFFS_TRACE_ALWAYS, + "yaffs: Failed to write bad block marker to block %d", + flash_block); yaffs_release_temp_buffer(dev, buffer, __LINE__); } @@ -530,81 +666,19 @@ static void yaffs_retire_block(yaffs_dev_t *dev, int flash_block) dev->n_retired_blocks++; } -/* - * Functions for robustisizing TODO - * - */ - -static void yaffs_handle_chunk_wr_ok(yaffs_dev_t *dev, int nand_chunk, - const __u8 *data, - const yaffs_ext_tags *tags) -{ - dev=dev; - nand_chunk=nand_chunk; - data=data; - tags=tags; -} - -static void yaffs_handle_chunk_update(yaffs_dev_t *dev, int nand_chunk, - const yaffs_ext_tags *tags) -{ - dev=dev; - nand_chunk=nand_chunk; - tags=tags; -} - -void yaffs_handle_chunk_error(yaffs_dev_t *dev, yaffs_block_info_t *bi) -{ - if (!bi->gc_prioritise) { - bi->gc_prioritise = 1; - dev->has_pending_prioritised_gc = 1; - bi->chunk_error_strikes++; - - if (bi->chunk_error_strikes > 3) { - bi->needs_retiring = 1; /* Too many stikes, so retire this */ - T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Block struck out" TENDSTR))); - - } - } -} - -static void yaffs_handle_chunk_wr_error(yaffs_dev_t *dev, int nand_chunk, - int erased_ok) -{ - int flash_block = nand_chunk / dev->param.chunks_per_block; - yaffs_block_info_t *bi = yaffs_get_block_info(dev, flash_block); - - yaffs_handle_chunk_error(dev, bi); - - if (erased_ok) { - /* Was an actual write failure, so mark the block for retirement */ - bi->needs_retiring = 1; - T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, - (TSTR("**>> Block %d needs retiring" TENDSTR), flash_block)); - } - - /* Delete the chunk */ - yaffs_chunk_del(dev, nand_chunk, 1, __LINE__); - yaffs_skip_rest_of_block(dev); -} - - /*---------------- Name handling functions ------------*/ -static __u16 yaffs_calc_name_sum(const YCHAR *name) +static u16 yaffs_calc_name_sum(const YCHAR * name) { - __u16 sum = 0; - __u16 i = 1; + u16 sum = 0; + u16 i = 1; - const YUCHAR *bname = (const YUCHAR *) name; + const YUCHAR *bname = (const YUCHAR *)name; if (bname) { - while ((*bname) && (i < (YAFFS_MAX_NAME_LENGTH/2))) { + while ((*bname) && (i < (YAFFS_MAX_NAME_LENGTH / 2))) { -#ifdef CONFIG_YAFFS_CASE_INSENSITIVE - sum += yaffs_toupper(*bname) * i; -#else - sum += (*bname) * i; -#endif + /* 0x1f mask is case insensitive */ + sum += ((*bname) & 0x1f) * i; i++; bname++; } @@ -612,27 +686,31 @@ static __u16 yaffs_calc_name_sum(const YCHAR *name) return sum; } -void yaffs_set_obj_name(yaffs_obj_t *obj, const YCHAR *name) +void yaffs_set_obj_name(struct yaffs_obj *obj, const YCHAR * name) { -#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM - memset(obj->short_name, 0, sizeof(YCHAR) * (YAFFS_SHORT_NAME_LENGTH+1)); - if (name && yaffs_strnlen(name,YAFFS_SHORT_NAME_LENGTH+1) <= YAFFS_SHORT_NAME_LENGTH) - yaffs_strcpy(obj->short_name, name); +#ifndef CONFIG_YAFFS_NO_SHORT_NAMES + memset(obj->short_name, 0, sizeof(obj->short_name)); + if (name && + strnlen(name, YAFFS_SHORT_NAME_LENGTH + 1) <= + YAFFS_SHORT_NAME_LENGTH) + strcpy(obj->short_name, name); else obj->short_name[0] = _Y('\0'); #endif obj->sum = yaffs_calc_name_sum(name); } -void yaffs_set_obj_name_from_oh(yaffs_obj_t *obj, const yaffs_obj_header *oh) +void yaffs_set_obj_name_from_oh(struct yaffs_obj *obj, + const struct yaffs_obj_hdr *oh) { #ifdef CONFIG_YAFFS_AUTO_UNICODE - YCHAR tmp_name[YAFFS_MAX_NAME_LENGTH+1]; - memset(tmp_name,0,sizeof(tmp_name)); - yaffs_load_name_from_oh(obj->my_dev,tmp_name,oh->name,YAFFS_MAX_NAME_LENGTH+1); - yaffs_set_obj_name(obj,tmp_name); + YCHAR tmp_name[YAFFS_MAX_NAME_LENGTH + 1]; + memset(tmp_name, 0, sizeof(tmp_name)); + yaffs_load_name_from_oh(obj->my_dev, tmp_name, oh->name, + YAFFS_MAX_NAME_LENGTH + 1); + yaffs_set_obj_name(obj, tmp_name); #else - yaffs_set_obj_name(obj,oh->name); + yaffs_set_obj_name(obj, oh->name); #endif } @@ -643,44 +721,42 @@ void yaffs_set_obj_name_from_oh(yaffs_obj_t *obj, const yaffs_obj_header *oh) * in the tnode. */ - -yaffs_tnode_t *yaffs_get_tnode(yaffs_dev_t *dev) +struct yaffs_tnode *yaffs_get_tnode(struct yaffs_dev *dev) { - yaffs_tnode_t *tn = yaffs_alloc_raw_tnode(dev); - if (tn){ + struct yaffs_tnode *tn = yaffs_alloc_raw_tnode(dev); + if (tn) { memset(tn, 0, dev->tnode_size); dev->n_tnodes++; } - dev->checkpoint_blocks_required = 0; /* force recalculation*/ + dev->checkpoint_blocks_required = 0; /* force recalculation */ return tn; } /* FreeTnode frees up a tnode and puts it back on the free list */ -static void yaffs_free_tnode(yaffs_dev_t *dev, yaffs_tnode_t *tn) +static void yaffs_free_tnode(struct yaffs_dev *dev, struct yaffs_tnode *tn) { - yaffs_free_raw_tnode(dev,tn); + yaffs_free_raw_tnode(dev, tn); dev->n_tnodes--; - dev->checkpoint_blocks_required = 0; /* force recalculation*/ + dev->checkpoint_blocks_required = 0; /* force recalculation */ } -static void yaffs_deinit_tnodes_and_objs(yaffs_dev_t *dev) +static void yaffs_deinit_tnodes_and_objs(struct yaffs_dev *dev) { yaffs_deinit_raw_tnodes_and_objs(dev); dev->n_obj = 0; dev->n_tnodes = 0; } - -void yaffs_load_tnode_0(yaffs_dev_t *dev, yaffs_tnode_t *tn, unsigned pos, - unsigned val) +void yaffs_load_tnode_0(struct yaffs_dev *dev, struct yaffs_tnode *tn, + unsigned pos, unsigned val) { - __u32 *map = (__u32 *)tn; - __u32 bit_in_map; - __u32 bit_in_word; - __u32 word_in_map; - __u32 mask; + u32 *map = (u32 *) tn; + u32 bit_in_map; + u32 bit_in_word; + u32 word_in_map; + u32 mask; pos &= YAFFS_TNODES_LEVEL0_MASK; val >>= dev->chunk_grp_bits; @@ -697,20 +773,21 @@ void yaffs_load_tnode_0(yaffs_dev_t *dev, yaffs_tnode_t *tn, unsigned pos, if (dev->tnode_width > (32 - bit_in_word)) { bit_in_word = (32 - bit_in_word); word_in_map++;; - mask = dev->tnode_mask >> (/*dev->tnode_width -*/ bit_in_word); + mask = + dev->tnode_mask >> ( /*dev->tnode_width - */ bit_in_word); map[word_in_map] &= ~mask; map[word_in_map] |= (mask & (val >> bit_in_word)); } } -__u32 yaffs_get_group_base(yaffs_dev_t *dev, yaffs_tnode_t *tn, - unsigned pos) +u32 yaffs_get_group_base(struct yaffs_dev *dev, struct yaffs_tnode *tn, + unsigned pos) { - __u32 *map = (__u32 *)tn; - __u32 bit_in_map; - __u32 bit_in_word; - __u32 word_in_map; - __u32 val; + u32 *map = (u32 *) tn; + u32 bit_in_map; + u32 bit_in_word; + u32 word_in_map; + u32 val; pos &= YAFFS_TNODES_LEVEL0_MASK; @@ -720,7 +797,7 @@ __u32 yaffs_get_group_base(yaffs_dev_t *dev, yaffs_tnode_t *tn, val = map[word_in_map] >> bit_in_word; - if (dev->tnode_width > (32 - bit_in_word)) { + if (dev->tnode_width > (32 - bit_in_word)) { bit_in_word = (32 - bit_in_word); word_in_map++;; val |= (map[word_in_map] << bit_in_word); @@ -740,16 +817,16 @@ __u32 yaffs_get_group_base(yaffs_dev_t *dev, yaffs_tnode_t *tn, */ /* FindLevel0Tnode finds the level 0 tnode, if one exists. */ -yaffs_tnode_t *yaffs_find_tnode_0(yaffs_dev_t *dev, - yaffs_file_s *file_struct, - __u32 chunk_id) +struct yaffs_tnode *yaffs_find_tnode_0(struct yaffs_dev *dev, + struct yaffs_file_var *file_struct, + u32 chunk_id) { - yaffs_tnode_t *tn = file_struct->top; - __u32 i; + struct yaffs_tnode *tn = file_struct->top; + u32 i; int required_depth; int level = file_struct->top_level; - dev=dev; + dev = dev; /* Check sane level and chunk Id */ if (level < 0 || level > YAFFS_TNODES_MAX_LEVEL) @@ -768,15 +845,15 @@ yaffs_tnode_t *yaffs_find_tnode_0(yaffs_dev_t *dev, } if (required_depth > file_struct->top_level) - return NULL; /* Not tall enough, so we can't find it */ + return NULL; /* Not tall enough, so we can't find it */ /* Traverse down to level 0 */ while (level > 0 && tn) { tn = tn->internal[(chunk_id >> - (YAFFS_TNODES_LEVEL0_BITS + - (level - 1) * - YAFFS_TNODES_INTERNAL_BITS)) & - YAFFS_TNODES_INTERNAL_MASK]; + (YAFFS_TNODES_LEVEL0_BITS + + (level - 1) * + YAFFS_TNODES_INTERNAL_BITS)) & + YAFFS_TNODES_INTERNAL_MASK]; level--; } @@ -794,21 +871,21 @@ yaffs_tnode_t *yaffs_find_tnode_0(yaffs_dev_t *dev, * be plugged into the ttree. */ -yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev, - yaffs_file_s *file_struct, - __u32 chunk_id, - yaffs_tnode_t *passed_tn) +struct yaffs_tnode *yaffs_add_find_tnode_0(struct yaffs_dev *dev, + struct yaffs_file_var *file_struct, + u32 chunk_id, + struct yaffs_tnode *passed_tn) { int required_depth; int i; int l; - yaffs_tnode_t *tn; - - __u32 x; + struct yaffs_tnode *tn; + u32 x; /* Check sane level and page Id */ - if (file_struct->top_level < 0 || file_struct->top_level > YAFFS_TNODES_MAX_LEVEL) + if (file_struct->top_level < 0 + || file_struct->top_level > YAFFS_TNODES_MAX_LEVEL) return NULL; if (chunk_id > YAFFS_MAX_CHUNK_ID) @@ -823,7 +900,6 @@ yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev, required_depth++; } - if (required_depth > file_struct->top_level) { /* Not tall enough, gotta make the tree taller */ for (i = file_struct->top_level; i < required_depth; i++) { @@ -835,8 +911,7 @@ yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev, file_struct->top = tn; file_struct->top_level++; } else { - T(YAFFS_TRACE_ERROR, - (TSTR("yaffs: no more tnodes" TENDSTR))); + yaffs_trace(YAFFS_TRACE_ERROR, "yaffs: no more tnodes"); return NULL; } } @@ -854,24 +929,25 @@ yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev, (l - 1) * YAFFS_TNODES_INTERNAL_BITS)) & YAFFS_TNODES_INTERNAL_MASK; - if ((l > 1) && !tn->internal[x]) { /* Add missing non-level-zero tnode */ tn->internal[x] = yaffs_get_tnode(dev); - if(!tn->internal[x]) + if (!tn->internal[x]) return NULL; } else if (l == 1) { /* Looking from level 1 at level 0 */ if (passed_tn) { - /* If we already have one, then release it.*/ + /* If we already have one, then release it. */ if (tn->internal[x]) - yaffs_free_tnode(dev, tn->internal[x]); + yaffs_free_tnode(dev, + tn-> + internal[x]); tn->internal[x] = passed_tn; } else if (!tn->internal[x]) { /* Don't have one, none passed in */ tn->internal[x] = yaffs_get_tnode(dev); - if(!tn->internal[x]) + if (!tn->internal[x]) return NULL; } } @@ -882,7 +958,8 @@ yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev, } else { /* top is level 0 */ if (passed_tn) { - memcpy(tn, passed_tn, (dev->tnode_width * YAFFS_NTNODES_LEVEL0)/8); + memcpy(tn, passed_tn, + (dev->tnode_width * YAFFS_NTNODES_LEVEL0) / 8); yaffs_free_tnode(dev, passed_tn); } } @@ -890,21 +967,30 @@ yaffs_tnode_t *yaffs_add_find_tnode_0(yaffs_dev_t *dev, return tn; } -static int yaffs_find_chunk_in_group(yaffs_dev_t *dev, int the_chunk, - yaffs_ext_tags *tags, int obj_id, - int inode_chunk) +static int yaffs_tags_match(const struct yaffs_ext_tags *tags, int obj_id, + int chunk_obj) +{ + return (tags->chunk_id == chunk_obj && + tags->obj_id == obj_id && !tags->is_deleted) ? 1 : 0; + +} + +static int yaffs_find_chunk_in_group(struct yaffs_dev *dev, int the_chunk, + struct yaffs_ext_tags *tags, int obj_id, + int inode_chunk) { int j; for (j = 0; the_chunk && j < dev->chunk_grp_size; j++) { - if (yaffs_check_chunk_bit(dev, the_chunk / dev->param.chunks_per_block, - the_chunk % dev->param.chunks_per_block)) { - - if(dev->chunk_grp_size == 1) + if (yaffs_check_chunk_bit + (dev, the_chunk / dev->param.chunks_per_block, + the_chunk % dev->param.chunks_per_block)) { + + if (dev->chunk_grp_size == 1) return the_chunk; else { yaffs_rd_chunk_tags_nand(dev, the_chunk, NULL, - tags); + tags); if (yaffs_tags_match(tags, obj_id, inode_chunk)) { /* found it; */ return the_chunk; @@ -916,201 +1002,731 @@ static int yaffs_find_chunk_in_group(yaffs_dev_t *dev, int the_chunk, return -1; } -#if 0 -/* Experimental code not being used yet. Might speed up file deletion */ -/* DeleteWorker scans backwards through the tnode tree and deletes all the - * chunks and tnodes in the file. - * Returns 1 if the tree was deleted. - * Returns 0 if it stopped early due to hitting the limit and the delete is incomplete. - */ - -static int yaffs_del_worker(yaffs_obj_t *in, yaffs_tnode_t *tn, __u32 level, - int chunk_offset, int *limit) +static int yaffs_find_chunk_in_file(struct yaffs_obj *in, int inode_chunk, + struct yaffs_ext_tags *tags) { - int i; - int inode_chunk; - int the_chunk; - yaffs_ext_tags tags; - int found_chunk; - yaffs_dev_t *dev = in->my_dev; + /*Get the Tnode, then get the level 0 offset chunk offset */ + struct yaffs_tnode *tn; + int the_chunk = -1; + struct yaffs_ext_tags local_tags; + int ret_val = -1; - int all_done = 1; + struct yaffs_dev *dev = in->my_dev; + + if (!tags) { + /* Passed a NULL, so use our own tags space */ + tags = &local_tags; + } + + tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk); if (tn) { - if (level > 0) { - for (i = YAFFS_NTNODES_INTERNAL - 1; all_done && i >= 0; - i--) { - if (tn->internal[i]) { - if (limit && (*limit) < 0) { - all_done = 0; - } else { - all_done = - yaffs_del_worker(in, - tn-> - internal - [i], - level - - 1, - (chunk_offset - << - YAFFS_TNODES_INTERNAL_BITS) - + i, - limit); - } + the_chunk = yaffs_get_group_base(dev, tn, inode_chunk); + + ret_val = + yaffs_find_chunk_in_group(dev, the_chunk, tags, in->obj_id, + inode_chunk); + } + return ret_val; +} + +static int yaffs_find_del_file_chunk(struct yaffs_obj *in, int inode_chunk, + struct yaffs_ext_tags *tags) +{ + /* Get the Tnode, then get the level 0 offset chunk offset */ + struct yaffs_tnode *tn; + int the_chunk = -1; + struct yaffs_ext_tags local_tags; + + struct yaffs_dev *dev = in->my_dev; + int ret_val = -1; + + if (!tags) { + /* Passed a NULL, so use our own tags space */ + tags = &local_tags; + } + + tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk); + + if (tn) { + + the_chunk = yaffs_get_group_base(dev, tn, inode_chunk); + + ret_val = + yaffs_find_chunk_in_group(dev, the_chunk, tags, in->obj_id, + inode_chunk); + + /* Delete the entry in the filestructure (if found) */ + if (ret_val != -1) + yaffs_load_tnode_0(dev, tn, inode_chunk, 0); + } + + return ret_val; +} + +int yaffs_put_chunk_in_file(struct yaffs_obj *in, int inode_chunk, + int nand_chunk, int in_scan) +{ + /* NB in_scan is zero unless scanning. + * For forward scanning, in_scan is > 0; + * for backward scanning in_scan is < 0 + * + * nand_chunk = 0 is a dummy insert to make sure the tnodes are there. + */ + + struct yaffs_tnode *tn; + struct yaffs_dev *dev = in->my_dev; + int existing_cunk; + struct yaffs_ext_tags existing_tags; + struct yaffs_ext_tags new_tags; + unsigned existing_serial, new_serial; + + if (in->variant_type != YAFFS_OBJECT_TYPE_FILE) { + /* Just ignore an attempt at putting a chunk into a non-file during scanning + * If it is not during Scanning then something went wrong! + */ + if (!in_scan) { + yaffs_trace(YAFFS_TRACE_ERROR, + "yaffs tragedy:attempt to put data chunk into a non-file" + ); + YBUG(); + } + + yaffs_chunk_del(dev, nand_chunk, 1, __LINE__); + return YAFFS_OK; + } + + tn = yaffs_add_find_tnode_0(dev, + &in->variant.file_variant, + inode_chunk, NULL); + if (!tn) + return YAFFS_FAIL; + + if (!nand_chunk) + /* Dummy insert, bail now */ + return YAFFS_OK; + + existing_cunk = yaffs_get_group_base(dev, tn, inode_chunk); + + if (in_scan != 0) { + /* If we're scanning then we need to test for duplicates + * NB This does not need to be efficient since it should only ever + * happen when the power fails during a write, then only one + * chunk should ever be affected. + * + * Correction for YAFFS2: This could happen quite a lot and we need to think about efficiency! TODO + * Update: For backward scanning we don't need to re-read tags so this is quite cheap. + */ + + if (existing_cunk > 0) { + /* NB Right now existing chunk will not be real chunk_id if the chunk group size > 1 + * thus we have to do a FindChunkInFile to get the real chunk id. + * + * We have a duplicate now we need to decide which one to use: + * + * Backwards scanning YAFFS2: The old one is what we use, dump the new one. + * Forward scanning YAFFS2: The new one is what we use, dump the old one. + * YAFFS1: Get both sets of tags and compare serial numbers. + */ + + if (in_scan > 0) { + /* Only do this for forward scanning */ + yaffs_rd_chunk_tags_nand(dev, + nand_chunk, + NULL, &new_tags); + + /* Do a proper find */ + existing_cunk = + yaffs_find_chunk_in_file(in, inode_chunk, + &existing_tags); + } + + if (existing_cunk <= 0) { + /*Hoosterman - how did this happen? */ + + yaffs_trace(YAFFS_TRACE_ERROR, + "yaffs tragedy: existing chunk < 0 in scan" + ); + + } + + /* NB The deleted flags should be false, otherwise the chunks will + * not be loaded during a scan + */ + + if (in_scan > 0) { + new_serial = new_tags.serial_number; + existing_serial = existing_tags.serial_number; + } + + if ((in_scan > 0) && + (existing_cunk <= 0 || + ((existing_serial + 1) & 3) == new_serial)) { + /* Forward scanning. + * Use new + * Delete the old one and drop through to update the tnode + */ + yaffs_chunk_del(dev, existing_cunk, 1, + __LINE__); + } else { + /* Backward scanning or we want to use the existing one + * Use existing. + * Delete the new one and return early so that the tnode isn't changed + */ + yaffs_chunk_del(dev, nand_chunk, 1, __LINE__); + return YAFFS_OK; + } + } + + } + + if (existing_cunk == 0) + in->n_data_chunks++; + + yaffs_load_tnode_0(dev, tn, inode_chunk, nand_chunk); + + return YAFFS_OK; +} + +static void yaffs_soft_del_chunk(struct yaffs_dev *dev, int chunk) +{ + struct yaffs_block_info *the_block; + unsigned block_no; + + yaffs_trace(YAFFS_TRACE_DELETION, "soft delete chunk %d", chunk); + + block_no = chunk / dev->param.chunks_per_block; + the_block = yaffs_get_block_info(dev, block_no); + if (the_block) { + the_block->soft_del_pages++; + dev->n_free_chunks++; + yaffs2_update_oldest_dirty_seq(dev, block_no, the_block); + } +} + +/* SoftDeleteWorker scans backwards through the tnode tree and soft deletes all the chunks in the file. + * All soft deleting does is increment the block's softdelete count and pulls the chunk out + * of the tnode. + * Thus, essentially this is the same as DeleteWorker except that the chunks are soft deleted. + */ + +static int yaffs_soft_del_worker(struct yaffs_obj *in, struct yaffs_tnode *tn, + u32 level, int chunk_offset) +{ + int i; + int the_chunk; + int all_done = 1; + struct yaffs_dev *dev = in->my_dev; + + if (tn) { + if (level > 0) { + + for (i = YAFFS_NTNODES_INTERNAL - 1; all_done && i >= 0; + i--) { + if (tn->internal[i]) { + all_done = + yaffs_soft_del_worker(in, + tn->internal + [i], + level - 1, + (chunk_offset + << + YAFFS_TNODES_INTERNAL_BITS) + + i); if (all_done) { yaffs_free_tnode(dev, - tn-> - internal[i]); + tn->internal + [i]); tn->internal[i] = NULL; + } else { + /* Hoosterman... how could this happen? */ } } } return (all_done) ? 1 : 0; } else if (level == 0) { - int hit_limit = 0; - for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0 && !hit_limit; - i--) { + for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0; i--) { the_chunk = yaffs_get_group_base(dev, tn, i); if (the_chunk) { + /* Note this does not find the real chunk, only the chunk group. + * We make an assumption that a chunk group is not larger than + * a block. + */ + yaffs_soft_del_chunk(dev, the_chunk); + yaffs_load_tnode_0(dev, tn, i, 0); + } - inode_chunk = (chunk_offset << - YAFFS_TNODES_LEVEL0_BITS) + i; - - found_chunk = - yaffs_find_chunk_in_group(dev, - the_chunk, - &tags, - in->obj_id, - inode_chunk); - - if (found_chunk > 0) { - yaffs_chunk_del(dev, - found_chunk, 1, - __LINE__); - in->n_data_chunks--; - if (limit) { - *limit = *limit - 1; - if (*limit <= 0) - hit_limit = 1; - } + } + return 1; + + } + + } + + return 1; + +} + +static void yaffs_remove_obj_from_dir(struct yaffs_obj *obj) +{ + struct yaffs_dev *dev = obj->my_dev; + struct yaffs_obj *parent; + + yaffs_verify_obj_in_dir(obj); + parent = obj->parent; + + yaffs_verify_dir(parent); + + if (dev && dev->param.remove_obj_fn) + dev->param.remove_obj_fn(obj); + + list_del_init(&obj->siblings); + obj->parent = NULL; + + yaffs_verify_dir(parent); +} + +void yaffs_add_obj_to_dir(struct yaffs_obj *directory, struct yaffs_obj *obj) +{ + if (!directory) { + yaffs_trace(YAFFS_TRACE_ALWAYS, + "tragedy: Trying to add an object to a null pointer directory" + ); + YBUG(); + return; + } + if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { + yaffs_trace(YAFFS_TRACE_ALWAYS, + "tragedy: Trying to add an object to a non-directory" + ); + YBUG(); + } + + if (obj->siblings.prev == NULL) { + /* Not initialised */ + YBUG(); + } + + yaffs_verify_dir(directory); + + yaffs_remove_obj_from_dir(obj); + + /* Now add it */ + list_add(&obj->siblings, &directory->variant.dir_variant.children); + obj->parent = directory; + + if (directory == obj->my_dev->unlinked_dir + || directory == obj->my_dev->del_dir) { + obj->unlinked = 1; + obj->my_dev->n_unlinked_files++; + obj->rename_allowed = 0; + } + yaffs_verify_dir(directory); + yaffs_verify_obj_in_dir(obj); +} + +static int yaffs_change_obj_name(struct yaffs_obj *obj, + struct yaffs_obj *new_dir, + const YCHAR * new_name, int force, int shadows) +{ + int unlink_op; + int del_op; + + struct yaffs_obj *existing_target; + + if (new_dir == NULL) + new_dir = obj->parent; /* use the old directory */ + + if (new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { + yaffs_trace(YAFFS_TRACE_ALWAYS, + "tragedy: yaffs_change_obj_name: new_dir is not a directory" + ); + YBUG(); + } + + /* TODO: Do we need this different handling for YAFFS2 and YAFFS1?? */ + if (obj->my_dev->param.is_yaffs2) + unlink_op = (new_dir == obj->my_dev->unlinked_dir); + else + unlink_op = (new_dir == obj->my_dev->unlinked_dir + && obj->variant_type == YAFFS_OBJECT_TYPE_FILE); + + del_op = (new_dir == obj->my_dev->del_dir); + + existing_target = yaffs_find_by_name(new_dir, new_name); + + /* If the object is a file going into the unlinked directory, + * then it is OK to just stuff it in since duplicate names are allowed. + * else only proceed if the new name does not exist and if we're putting + * it into a directory. + */ + if ((unlink_op || + del_op || + force || + (shadows > 0) || + !existing_target) && + new_dir->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) { + yaffs_set_obj_name(obj, new_name); + obj->dirty = 1; + + yaffs_add_obj_to_dir(new_dir, obj); + + if (unlink_op) + obj->unlinked = 1; + + /* If it is a deletion then we mark it as a shrink for gc purposes. */ + if (yaffs_update_oh(obj, new_name, 0, del_op, shadows, NULL) >= + 0) + return YAFFS_OK; + } + + return YAFFS_FAIL; +} + +/*------------------------ Short Operations Cache ---------------------------------------- + * In many situations where there is no high level buffering a lot of + * reads might be short sequential reads, and a lot of writes may be short + * sequential writes. eg. scanning/writing a jpeg file. + * In these cases, a short read/write cache can provide a huge perfomance + * benefit with dumb-as-a-rock code. + * In Linux, the page cache provides read buffering and the short op cache + * provides write buffering. + * + * There are a limited number (~10) of cache chunks per device so that we don't + * need a very intelligent search. + */ + +static int yaffs_obj_cache_dirty(struct yaffs_obj *obj) +{ + struct yaffs_dev *dev = obj->my_dev; + int i; + struct yaffs_cache *cache; + int n_caches = obj->my_dev->param.n_caches; + + for (i = 0; i < n_caches; i++) { + cache = &dev->cache[i]; + if (cache->object == obj && cache->dirty) + return 1; + } + + return 0; +} + +static void yaffs_flush_file_cache(struct yaffs_obj *obj) +{ + struct yaffs_dev *dev = obj->my_dev; + int lowest = -99; /* Stop compiler whining. */ + int i; + struct yaffs_cache *cache; + int chunk_written = 0; + int n_caches = obj->my_dev->param.n_caches; + + if (n_caches > 0) { + do { + cache = NULL; + + /* Find the dirty cache for this object with the lowest chunk id. */ + for (i = 0; i < n_caches; i++) { + if (dev->cache[i].object == obj && + dev->cache[i].dirty) { + if (!cache + || dev->cache[i].chunk_id < + lowest) { + cache = &dev->cache[i]; + lowest = cache->chunk_id; } + } + } - yaffs_load_tnode_0(dev, tn, i, 0); + if (cache && !cache->locked) { + /* Write it out and free it up */ + + chunk_written = + yaffs_wr_data_obj(cache->object, + cache->chunk_id, + cache->data, + cache->n_bytes, 1); + cache->dirty = 0; + cache->object = NULL; + } + + } while (cache && chunk_written > 0); + + if (cache) + /* Hoosterman, disk full while writing cache out. */ + yaffs_trace(YAFFS_TRACE_ERROR, + "yaffs tragedy: no space during cache write"); + + } + +} + +/*yaffs_flush_whole_cache(dev) + * + * + */ + +void yaffs_flush_whole_cache(struct yaffs_dev *dev) +{ + struct yaffs_obj *obj; + int n_caches = dev->param.n_caches; + int i; + + /* Find a dirty object in the cache and flush it... + * until there are no further dirty objects. + */ + do { + obj = NULL; + for (i = 0; i < n_caches && !obj; i++) { + if (dev->cache[i].object && dev->cache[i].dirty) + obj = dev->cache[i].object; + + } + if (obj) + yaffs_flush_file_cache(obj); + + } while (obj); + +} + +/* Grab us a cache chunk for use. + * First look for an empty one. + * Then look for the least recently used non-dirty one. + * Then look for the least recently used dirty one...., flush and look again. + */ +static struct yaffs_cache *yaffs_grab_chunk_worker(struct yaffs_dev *dev) +{ + int i; + + if (dev->param.n_caches > 0) { + for (i = 0; i < dev->param.n_caches; i++) { + if (!dev->cache[i].object) + return &dev->cache[i]; + } + } + + return NULL; +} + +static struct yaffs_cache *yaffs_grab_chunk_cache(struct yaffs_dev *dev) +{ + struct yaffs_cache *cache; + struct yaffs_obj *the_obj; + int usage; + int i; + int pushout; + + if (dev->param.n_caches > 0) { + /* Try find a non-dirty one... */ + + cache = yaffs_grab_chunk_worker(dev); + + if (!cache) { + /* They were all dirty, find the last recently used object and flush + * its cache, then find again. + * NB what's here is not very accurate, we actually flush the object + * the last recently used page. + */ + + /* With locking we can't assume we can use entry zero */ + + the_obj = NULL; + usage = -1; + cache = NULL; + pushout = -1; + + for (i = 0; i < dev->param.n_caches; i++) { + if (dev->cache[i].object && + !dev->cache[i].locked && + (dev->cache[i].last_use < usage + || !cache)) { + usage = dev->cache[i].last_use; + the_obj = dev->cache[i].object; + cache = &dev->cache[i]; + pushout = i; } + } + + if (!cache || cache->dirty) { + /* Flush and try again */ + yaffs_flush_file_cache(the_obj); + cache = yaffs_grab_chunk_worker(dev); + } + + } + return cache; + } else { + return NULL; + } +} + +/* Find a cached chunk */ +static struct yaffs_cache *yaffs_find_chunk_cache(const struct yaffs_obj *obj, + int chunk_id) +{ + struct yaffs_dev *dev = obj->my_dev; + int i; + if (dev->param.n_caches > 0) { + for (i = 0; i < dev->param.n_caches; i++) { + if (dev->cache[i].object == obj && + dev->cache[i].chunk_id == chunk_id) { + dev->cache_hits++; + return &dev->cache[i]; } - return (i < 0) ? 1 : 0; + } + } + return NULL; +} + +/* Mark the chunk for the least recently used algorithym */ +static void yaffs_use_cache(struct yaffs_dev *dev, struct yaffs_cache *cache, + int is_write) +{ + + if (dev->param.n_caches > 0) { + if (dev->cache_last_use < 0 || dev->cache_last_use > 100000000) { + /* Reset the cache usages */ + int i; + for (i = 1; i < dev->param.n_caches; i++) + dev->cache[i].last_use = 0; + + dev->cache_last_use = 0; + } + + dev->cache_last_use++; + + cache->last_use = dev->cache_last_use; + + if (is_write) + cache->dirty = 1; + } +} + +/* Invalidate a single cache page. + * Do this when a whole page gets written, + * ie the short cache for this page is no longer valid. + */ +static void yaffs_invalidate_chunk_cache(struct yaffs_obj *object, int chunk_id) +{ + if (object->my_dev->param.n_caches > 0) { + struct yaffs_cache *cache = + yaffs_find_chunk_cache(object, chunk_id); + + if (cache) + cache->object = NULL; + } +} + +/* Invalidate all the cache pages associated with this object + * Do this whenever ther file is deleted or resized. + */ +static void yaffs_invalidate_whole_cache(struct yaffs_obj *in) +{ + int i; + struct yaffs_dev *dev = in->my_dev; + if (dev->param.n_caches > 0) { + /* Invalidate it. */ + for (i = 0; i < dev->param.n_caches; i++) { + if (dev->cache[i].object == in) + dev->cache[i].object = NULL; } - } +} - return 1; +static void yaffs_unhash_obj(struct yaffs_obj *obj) +{ + int bucket; + struct yaffs_dev *dev = obj->my_dev; + /* If it is still linked into the bucket list, free from the list */ + if (!list_empty(&obj->hash_link)) { + list_del_init(&obj->hash_link); + bucket = yaffs_hash_fn(obj->obj_id); + dev->obj_bucket[bucket].count--; + } } -#endif - -static void yaffs_soft_del_chunk(yaffs_dev_t *dev, int chunk) +/* FreeObject frees up a Object and puts it back on the free list */ +static void yaffs_free_obj(struct yaffs_obj *obj) { - yaffs_block_info_t *the_block; - unsigned block_no; + struct yaffs_dev *dev = obj->my_dev; - T(YAFFS_TRACE_DELETION, (TSTR("soft delete chunk %d" TENDSTR), chunk)); + yaffs_trace(YAFFS_TRACE_OS, "FreeObject %p inode %p", + obj, obj->my_inode); - block_no = chunk / dev->param.chunks_per_block; - the_block = yaffs_get_block_info(dev, block_no); - if (the_block) { - the_block->soft_del_pages++; - dev->n_free_chunks++; - yaffs2_update_oldest_dirty_seq(dev, block_no, the_block); - } -} + if (!obj) + YBUG(); + if (obj->parent) + YBUG(); + if (!list_empty(&obj->siblings)) + YBUG(); -/* SoftDeleteWorker scans backwards through the tnode tree and soft deletes all the chunks in the file. - * All soft deleting does is increment the block's softdelete count and pulls the chunk out - * of the tnode. - * Thus, essentially this is the same as DeleteWorker except that the chunks are soft deleted. - */ + if (obj->my_inode) { + /* We're still hooked up to a cached inode. + * Don't delete now, but mark for later deletion + */ + obj->defered_free = 1; + return; + } -static int yaffs_soft_del_worker(yaffs_obj_t *in, yaffs_tnode_t *tn, - __u32 level, int chunk_offset) -{ - int i; - int the_chunk; - int all_done = 1; - yaffs_dev_t *dev = in->my_dev; + yaffs_unhash_obj(obj); - if (tn) { - if (level > 0) { + yaffs_free_raw_obj(dev, obj); + dev->n_obj--; + dev->checkpoint_blocks_required = 0; /* force recalculation */ +} - for (i = YAFFS_NTNODES_INTERNAL - 1; all_done && i >= 0; - i--) { - if (tn->internal[i]) { - all_done = - yaffs_soft_del_worker(in, - tn-> - internal[i], - level - 1, - (chunk_offset - << - YAFFS_TNODES_INTERNAL_BITS) - + i); - if (all_done) { - yaffs_free_tnode(dev, - tn-> - internal[i]); - tn->internal[i] = NULL; - } else { - /* Hoosterman... how could this happen? */ - } - } - } - return (all_done) ? 1 : 0; - } else if (level == 0) { +void yaffs_handle_defered_free(struct yaffs_obj *obj) +{ + if (obj->defered_free) + yaffs_free_obj(obj); +} - for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0; i--) { - the_chunk = yaffs_get_group_base(dev, tn, i); - if (the_chunk) { - /* Note this does not find the real chunk, only the chunk group. - * We make an assumption that a chunk group is not larger than - * a block. - */ - yaffs_soft_del_chunk(dev, the_chunk); - yaffs_load_tnode_0(dev, tn, i, 0); - } +static int yaffs_generic_obj_del(struct yaffs_obj *in) +{ - } - return 1; + /* First off, invalidate the file's data in the cache, without flushing. */ + yaffs_invalidate_whole_cache(in); - } + if (in->my_dev->param.is_yaffs2 && (in->parent != in->my_dev->del_dir)) { + /* Move to the unlinked directory so we have a record that it was deleted. */ + yaffs_change_obj_name(in, in->my_dev->del_dir, _Y("deleted"), 0, + 0); } - return 1; + yaffs_remove_obj_from_dir(in); + yaffs_chunk_del(in->my_dev, in->hdr_chunk, 1, __LINE__); + in->hdr_chunk = 0; + + yaffs_free_obj(in); + return YAFFS_OK; } -static void yaffs_soft_del_file(yaffs_obj_t *obj) +static void yaffs_soft_del_file(struct yaffs_obj *obj) { if (obj->deleted && obj->variant_type == YAFFS_OBJECT_TYPE_FILE && !obj->soft_del) { if (obj->n_data_chunks <= 0) { - /* Empty file with no duplicate object headers, just delete it immediately */ + /* Empty file with no duplicate object headers, + * just delete it immediately */ yaffs_free_tnode(obj->my_dev, - obj->variant.file_variant.top); + obj->variant.file_variant.top); obj->variant.file_variant.top = NULL; - T(YAFFS_TRACE_TRACING, - (TSTR("yaffs: Deleting empty file %d" TENDSTR), - obj->obj_id)); + yaffs_trace(YAFFS_TRACE_TRACING, + "yaffs: Deleting empty file %d", + obj->obj_id); yaffs_generic_obj_del(obj); } else { yaffs_soft_del_worker(obj, - obj->variant.file_variant.top, - obj->variant.file_variant. - top_level, 0); + obj->variant.file_variant.top, + obj->variant. + file_variant.top_level, 0); obj->soft_del = 1; } } @@ -1131,8 +1747,9 @@ static void yaffs_soft_del_file(yaffs_obj_t *obj) * If there is no data in a subtree then it is pruned. */ -static yaffs_tnode_t *yaffs_prune_worker(yaffs_dev_t *dev, yaffs_tnode_t *tn, - __u32 level, int del0) +static struct yaffs_tnode *yaffs_prune_worker(struct yaffs_dev *dev, + struct yaffs_tnode *tn, u32 level, + int del0) { int i; int has_data; @@ -1140,27 +1757,29 @@ static yaffs_tnode_t *yaffs_prune_worker(yaffs_dev_t *dev, yaffs_tnode_t *tn, if (tn) { has_data = 0; - if(level > 0){ + if (level > 0) { for (i = 0; i < YAFFS_NTNODES_INTERNAL; i++) { if (tn->internal[i]) { tn->internal[i] = - yaffs_prune_worker(dev, tn->internal[i], - level - 1, - (i == 0) ? del0 : 1); + yaffs_prune_worker(dev, + tn->internal[i], + level - 1, + (i == + 0) ? del0 : 1); } if (tn->internal[i]) has_data++; } } else { - int tnode_size_u32 = dev->tnode_size/sizeof(__u32); - __u32 *map = (__u32 *)tn; + int tnode_size_u32 = dev->tnode_size / sizeof(u32); + u32 *map = (u32 *) tn; - for(i = 0; !has_data && i < tnode_size_u32; i++){ - if(map[i]) - has_data++; - } - } + for (i = 0; !has_data && i < tnode_size_u32; i++) { + if (map[i]) + has_data++; + } + } if (has_data == 0 && del0) { /* Free and return NULL */ @@ -1175,17 +1794,18 @@ static yaffs_tnode_t *yaffs_prune_worker(yaffs_dev_t *dev, yaffs_tnode_t *tn, } -static int yaffs_prune_tree(yaffs_dev_t *dev, - yaffs_file_s *file_struct) +static int yaffs_prune_tree(struct yaffs_dev *dev, + struct yaffs_file_var *file_struct) { int i; int has_data; int done = 0; - yaffs_tnode_t *tn; + struct yaffs_tnode *tn; if (file_struct->top_level > 0) { file_struct->top = - yaffs_prune_worker(dev, file_struct->top, file_struct->top_level, 0); + yaffs_prune_worker(dev, file_struct->top, + file_struct->top_level, 0); /* Now we have a tree with all the non-zero branches NULL but the height * is the same as it was. @@ -1218,32 +1838,31 @@ static int yaffs_prune_tree(yaffs_dev_t *dev, /*-------------------- End of File Structure functions.-------------------*/ - /* AllocateEmptyObject gets us a clean Object. Tries to make allocate more if we run out */ -static yaffs_obj_t *yaffs_alloc_empty_obj(yaffs_dev_t *dev) +static struct yaffs_obj *yaffs_alloc_empty_obj(struct yaffs_dev *dev) { - yaffs_obj_t *obj = yaffs_alloc_raw_obj(dev); + struct yaffs_obj *obj = yaffs_alloc_raw_obj(dev); if (obj) { dev->n_obj++; /* Now sweeten it up... */ - memset(obj, 0, sizeof(yaffs_obj_t)); + memset(obj, 0, sizeof(struct yaffs_obj)); obj->being_created = 1; obj->my_dev = dev; obj->hdr_chunk = 0; obj->variant_type = YAFFS_OBJECT_TYPE_UNKNOWN; - YINIT_LIST_HEAD(&(obj->hard_links)); - YINIT_LIST_HEAD(&(obj->hash_link)); - YINIT_LIST_HEAD(&obj->siblings); - + INIT_LIST_HEAD(&(obj->hard_links)); + INIT_LIST_HEAD(&(obj->hash_link)); + INIT_LIST_HEAD(&obj->siblings); /* Now make the directory sane */ if (dev->root_dir) { obj->parent = dev->root_dir; - ylist_add(&(obj->siblings), &dev->root_dir->variant.dir_variant.children); + list_add(&(obj->siblings), + &dev->root_dir->variant.dir_variant.children); } /* Add it to the lost and found directory. @@ -1256,104 +1875,17 @@ static yaffs_obj_t *yaffs_alloc_empty_obj(yaffs_dev_t *dev) obj->being_created = 0; } - dev->checkpoint_blocks_required = 0; /* force recalculation*/ - - return obj; -} - -static yaffs_obj_t *yaffs_create_fake_dir(yaffs_dev_t *dev, int number, - __u32 mode) -{ - - yaffs_obj_t *obj = - yaffs_new_obj(dev, number, YAFFS_OBJECT_TYPE_DIRECTORY); - if (obj) { - obj->fake = 1; /* it is fake so it might have no NAND presence... */ - obj->rename_allowed = 0; /* ... and we're not allowed to rename it... */ - obj->unlink_allowed = 0; /* ... or unlink it */ - obj->deleted = 0; - obj->unlinked = 0; - obj->yst_mode = mode; - obj->my_dev = dev; - obj->hdr_chunk = 0; /* Not a valid chunk. */ - } + dev->checkpoint_blocks_required = 0; /* force recalculation */ return obj; - -} - -static void yaffs_unhash_obj(yaffs_obj_t *obj) -{ - int bucket; - yaffs_dev_t *dev = obj->my_dev; - - /* If it is still linked into the bucket list, free from the list */ - if (!ylist_empty(&obj->hash_link)) { - ylist_del_init(&obj->hash_link); - bucket = yaffs_hash_fn(obj->obj_id); - dev->obj_bucket[bucket].count--; - } -} - -/* FreeObject frees up a Object and puts it back on the free list */ -static void yaffs_free_obj(yaffs_obj_t *obj) -{ - yaffs_dev_t *dev = obj->my_dev; - - T(YAFFS_TRACE_OS, (TSTR("FreeObject %p inode %p"TENDSTR), obj, obj->my_inode)); - - if (!obj) - YBUG(); - if (obj->parent) - YBUG(); - if (!ylist_empty(&obj->siblings)) - YBUG(); - - - if (obj->my_inode) { - /* We're still hooked up to a cached inode. - * Don't delete now, but mark for later deletion - */ - obj->defered_free = 1; - return; - } - - yaffs_unhash_obj(obj); - - yaffs_free_raw_obj(dev,obj); - dev->n_obj--; - dev->checkpoint_blocks_required = 0; /* force recalculation*/ -} - - -void yaffs_handle_defered_free(yaffs_obj_t *obj) -{ - if (obj->defered_free) - yaffs_free_obj(obj); -} - -static void yaffs_init_tnodes_and_objs(yaffs_dev_t *dev) -{ - int i; - - dev->n_obj = 0; - dev->n_tnodes = 0; - - yaffs_init_raw_tnodes_and_objs(dev); - - for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { - YINIT_LIST_HEAD(&dev->obj_bucket[i].list); - dev->obj_bucket[i].count = 0; - } } -static int yaffs_find_nice_bucket(yaffs_dev_t *dev) +static int yaffs_find_nice_bucket(struct yaffs_dev *dev) { int i; int l = 999; int lowest = 999999; - /* Search for the shortest list or one that * isn't too long. */ @@ -1371,7 +1903,7 @@ static int yaffs_find_nice_bucket(yaffs_dev_t *dev) return l; } -static int yaffs_new_obj_id(yaffs_dev_t *dev) +static int yaffs_new_obj_id(struct yaffs_dev *dev) { int bucket = yaffs_find_nice_bucket(dev); @@ -1380,9 +1912,9 @@ static int yaffs_new_obj_id(yaffs_dev_t *dev) */ int found = 0; - struct ylist_head *i; + struct list_head *i; - __u32 n = (__u32) bucket; + u32 n = (u32) bucket; /* yaffs_check_obj_hash_sane(); */ @@ -1390,10 +1922,10 @@ static int yaffs_new_obj_id(yaffs_dev_t *dev) found = 1; n += YAFFS_NOBJECT_BUCKETS; if (1 || dev->obj_bucket[bucket].count > 0) { - ylist_for_each(i, &dev->obj_bucket[bucket].list) { + list_for_each(i, &dev->obj_bucket[bucket].list) { /* If there is already one in the list */ - if (i && ylist_entry(i, yaffs_obj_t, - hash_link)->obj_id == n) { + if (i && list_entry(i, struct yaffs_obj, + hash_link)->obj_id == n) { found = 0; } } @@ -1403,25 +1935,25 @@ static int yaffs_new_obj_id(yaffs_dev_t *dev) return n; } -static void yaffs_hash_obj(yaffs_obj_t *in) +static void yaffs_hash_obj(struct yaffs_obj *in) { int bucket = yaffs_hash_fn(in->obj_id); - yaffs_dev_t *dev = in->my_dev; + struct yaffs_dev *dev = in->my_dev; - ylist_add(&in->hash_link, &dev->obj_bucket[bucket].list); + list_add(&in->hash_link, &dev->obj_bucket[bucket].list); dev->obj_bucket[bucket].count++; } -yaffs_obj_t *yaffs_find_by_number(yaffs_dev_t *dev, __u32 number) +struct yaffs_obj *yaffs_find_by_number(struct yaffs_dev *dev, u32 number) { int bucket = yaffs_hash_fn(number); - struct ylist_head *i; - yaffs_obj_t *in; + struct list_head *i; + struct yaffs_obj *in; - ylist_for_each(i, &dev->obj_bucket[bucket].list) { + list_for_each(i, &dev->obj_bucket[bucket].list) { /* Look if it is in the list */ if (i) { - in = ylist_entry(i, yaffs_obj_t, hash_link); + in = list_entry(i, struct yaffs_obj, hash_link); if (in->obj_id == number) { /* Don't tell the VFS about this one if it is defered free */ @@ -1436,11 +1968,11 @@ yaffs_obj_t *yaffs_find_by_number(yaffs_dev_t *dev, __u32 number) return NULL; } -yaffs_obj_t *yaffs_new_obj(yaffs_dev_t *dev, int number, - yaffs_obj_type type) +struct yaffs_obj *yaffs_new_obj(struct yaffs_dev *dev, int number, + enum yaffs_obj_type type) { - yaffs_obj_t *the_obj=NULL; - yaffs_tnode_t *tn = NULL; + struct yaffs_obj *the_obj = NULL; + struct yaffs_tnode *tn = NULL; if (number < 0) number = yaffs_new_obj_id(dev); @@ -1452,13 +1984,12 @@ yaffs_obj_t *yaffs_new_obj(yaffs_dev_t *dev, int number, } the_obj = yaffs_alloc_empty_obj(dev); - if (!the_obj){ - if(tn) - yaffs_free_tnode(dev,tn); + if (!the_obj) { + if (tn) + yaffs_free_tnode(dev, tn); return NULL; } - if (the_obj) { the_obj->fake = 0; the_obj->rename_allowed = 1; @@ -1466,31 +1997,19 @@ yaffs_obj_t *yaffs_new_obj(yaffs_dev_t *dev, int number, the_obj->obj_id = number; yaffs_hash_obj(the_obj); the_obj->variant_type = type; -#ifdef CONFIG_YAFFS_WINCE - yfsd_win_file_time_now(the_obj->win_atime); - the_obj->win_ctime[0] = the_obj->win_mtime[0] = - the_obj->win_atime[0]; - the_obj->win_ctime[1] = the_obj->win_mtime[1] = - the_obj->win_atime[1]; - -#else + yaffs_load_current_time(the_obj, 1, 1); - the_obj->yst_atime = the_obj->yst_mtime = - the_obj->yst_ctime = Y_CURRENT_TIME; -#endif switch (type) { case YAFFS_OBJECT_TYPE_FILE: the_obj->variant.file_variant.file_size = 0; the_obj->variant.file_variant.scanned_size = 0; - the_obj->variant.file_variant.shrink_size = 0xFFFFFFFF; /* max __u32 */ + the_obj->variant.file_variant.shrink_size = ~0; /* max */ the_obj->variant.file_variant.top_level = 0; the_obj->variant.file_variant.top = tn; break; case YAFFS_OBJECT_TYPE_DIRECTORY: - YINIT_LIST_HEAD(&the_obj->variant.dir_variant. - children); - YINIT_LIST_HEAD(&the_obj->variant.dir_variant. - dirty); + INIT_LIST_HEAD(&the_obj->variant.dir_variant.children); + INIT_LIST_HEAD(&the_obj->variant.dir_variant.dirty); break; case YAFFS_OBJECT_TYPE_SYMLINK: case YAFFS_OBJECT_TYPE_HARDLINK: @@ -1506,11 +2025,48 @@ yaffs_obj_t *yaffs_new_obj(yaffs_dev_t *dev, int number, return the_obj; } -yaffs_obj_t *yaffs_find_or_create_by_number(yaffs_dev_t *dev, - int number, - yaffs_obj_type type) +static struct yaffs_obj *yaffs_create_fake_dir(struct yaffs_dev *dev, + int number, u32 mode) +{ + + struct yaffs_obj *obj = + yaffs_new_obj(dev, number, YAFFS_OBJECT_TYPE_DIRECTORY); + if (obj) { + obj->fake = 1; /* it is fake so it might have no NAND presence... */ + obj->rename_allowed = 0; /* ... and we're not allowed to rename it... */ + obj->unlink_allowed = 0; /* ... or unlink it */ + obj->deleted = 0; + obj->unlinked = 0; + obj->yst_mode = mode; + obj->my_dev = dev; + obj->hdr_chunk = 0; /* Not a valid chunk. */ + } + + return obj; + +} + + +static void yaffs_init_tnodes_and_objs(struct yaffs_dev *dev) +{ + int i; + + dev->n_obj = 0; + dev->n_tnodes = 0; + + yaffs_init_raw_tnodes_and_objs(dev); + + for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { + INIT_LIST_HEAD(&dev->obj_bucket[i].list); + dev->obj_bucket[i].count = 0; + } +} + +struct yaffs_obj *yaffs_find_or_create_by_number(struct yaffs_dev *dev, + int number, + enum yaffs_obj_type type) { - yaffs_obj_t *the_obj = NULL; + struct yaffs_obj *the_obj = NULL; if (number > 0) the_obj = yaffs_find_by_number(dev, number); @@ -1522,23 +2078,85 @@ yaffs_obj_t *yaffs_find_or_create_by_number(yaffs_dev_t *dev, } +YCHAR *yaffs_clone_str(const YCHAR * str) +{ + YCHAR *new_str = NULL; + int len; + + if (!str) + str = _Y(""); + + len = strnlen(str, YAFFS_MAX_ALIAS_LENGTH); + new_str = kmalloc((len + 1) * sizeof(YCHAR), GFP_NOFS); + if (new_str) { + strncpy(new_str, str, len); + new_str[len] = 0; + } + return new_str; + +} +/* + *yaffs_update_parent() handles fixing a directories mtime and ctime when a new + * link (ie. name) is created or deleted in the directory. + * + * ie. + * create dir/a : update dir's mtime/ctime + * rm dir/a: update dir's mtime/ctime + * modify dir/a: don't update dir's mtimme/ctime + * + * This can be handled immediately or defered. Defering helps reduce the number + * of updates when many files in a directory are changed within a brief period. + * + * If the directory updating is defered then yaffs_update_dirty_dirs must be + * called periodically. + */ + +static void yaffs_update_parent(struct yaffs_obj *obj) +{ + struct yaffs_dev *dev; + if (!obj) + return; + dev = obj->my_dev; + obj->dirty = 1; + yaffs_load_current_time(obj, 0, 1); + if (dev->param.defered_dir_update) { + struct list_head *link = &obj->variant.dir_variant.dirty; + + if (list_empty(link)) { + list_add(link, &dev->dirty_dirs); + yaffs_trace(YAFFS_TRACE_BACKGROUND, + "Added object %d to dirty directories", + obj->obj_id); + } + + } else { + yaffs_update_oh(obj, NULL, 0, 0, 0, NULL); + } +} + +void yaffs_update_dirty_dirs(struct yaffs_dev *dev) +{ + struct list_head *link; + struct yaffs_obj *obj; + struct yaffs_dir_var *d_s; + union yaffs_obj_var *o_v; + + yaffs_trace(YAFFS_TRACE_BACKGROUND, "Update dirty directories"); + + while (!list_empty(&dev->dirty_dirs)) { + link = dev->dirty_dirs.next; + list_del_init(link); -YCHAR *yaffs_clone_str(const YCHAR *str) -{ - YCHAR *new_str = NULL; - int len; + d_s = list_entry(link, struct yaffs_dir_var, dirty); + o_v = list_entry(d_s, union yaffs_obj_var, dir_variant); + obj = list_entry(o_v, struct yaffs_obj, variant); - if (!str) - str = _Y(""); + yaffs_trace(YAFFS_TRACE_BACKGROUND, "Update directory %d", + obj->obj_id); - len = yaffs_strnlen(str,YAFFS_MAX_ALIAS_LENGTH); - new_str = YMALLOC((len + 1) * sizeof(YCHAR)); - if (new_str){ - yaffs_strncpy(new_str, str,len); - new_str[len] = 0; + if (obj->dirty) + yaffs_update_oh(obj, NULL, 0, 0, 0, NULL); } - return new_str; - } /* @@ -1548,21 +2166,21 @@ YCHAR *yaffs_clone_str(const YCHAR *str) * rdev only has meaning for devices (a subset of special objects) */ -static yaffs_obj_t *yaffs_create_obj(yaffs_obj_type type, - yaffs_obj_t *parent, - const YCHAR *name, - __u32 mode, - __u32 uid, - __u32 gid, - yaffs_obj_t *equiv_obj, - const YCHAR *alias_str, __u32 rdev) +static struct yaffs_obj *yaffs_create_obj(enum yaffs_obj_type type, + struct yaffs_obj *parent, + const YCHAR * name, + u32 mode, + u32 uid, + u32 gid, + struct yaffs_obj *equiv_obj, + const YCHAR * alias_str, u32 rdev) { - yaffs_obj_t *in; + struct yaffs_obj *in; YCHAR *str = NULL; - yaffs_dev_t *dev = parent->my_dev; + struct yaffs_dev *dev = parent->my_dev; - /* Check if the entry exists. If it does then fail the call since we don't want a dup.*/ + /* Check if the entry exists. If it does then fail the call since we don't want a dup. */ if (yaffs_find_by_name(parent, name)) return NULL; @@ -1574,16 +2192,12 @@ static yaffs_obj_t *yaffs_create_obj(yaffs_obj_type type, in = yaffs_new_obj(dev, -1, type); - if (!in){ - if(str) - YFREE(str); + if (!in) { + if (str) + kfree(str); return NULL; } - - - - if (in) { in->hdr_chunk = 0; in->valid = 1; @@ -1591,18 +2205,8 @@ static yaffs_obj_t *yaffs_create_obj(yaffs_obj_type type, in->yst_mode = mode; -#ifdef CONFIG_YAFFS_WINCE - yfsd_win_file_time_now(in->win_atime); - in->win_ctime[0] = in->win_mtime[0] = in->win_atime[0]; - in->win_ctime[1] = in->win_mtime[1] = in->win_atime[1]; - -#else - in->yst_atime = in->yst_mtime = in->yst_ctime = Y_CURRENT_TIME; + yaffs_attribs_init(in, gid, uid, rdev); - in->yst_rdev = rdev; - in->yst_uid = uid; - in->yst_gid = gid; -#endif in->n_data_chunks = 0; yaffs_set_obj_name(in, name); @@ -1617,11 +2221,10 @@ static yaffs_obj_t *yaffs_create_obj(yaffs_obj_type type, in->variant.symlink_variant.alias = str; break; case YAFFS_OBJECT_TYPE_HARDLINK: - in->variant.hardlink_variant.equiv_obj = - equiv_obj; + in->variant.hardlink_variant.equiv_obj = equiv_obj; in->variant.hardlink_variant.equiv_id = - equiv_obj->obj_id; - ylist_add(&in->hard_links, &equiv_obj->hard_links); + equiv_obj->obj_id; + list_add(&in->hard_links, &equiv_obj->hard_links); break; case YAFFS_OBJECT_TYPE_FILE: case YAFFS_OBJECT_TYPE_DIRECTORY: @@ -1643,38 +2246,40 @@ static yaffs_obj_t *yaffs_create_obj(yaffs_obj_type type, return in; } -yaffs_obj_t *yaffs_create_file(yaffs_obj_t *parent, const YCHAR *name, - __u32 mode, __u32 uid, __u32 gid) +struct yaffs_obj *yaffs_create_file(struct yaffs_obj *parent, + const YCHAR * name, u32 mode, u32 uid, + u32 gid) { return yaffs_create_obj(YAFFS_OBJECT_TYPE_FILE, parent, name, mode, uid, gid, NULL, NULL, 0); } -yaffs_obj_t *yaffs_create_dir(yaffs_obj_t *parent, const YCHAR *name, - __u32 mode, __u32 uid, __u32 gid) +struct yaffs_obj *yaffs_create_dir(struct yaffs_obj *parent, const YCHAR * name, + u32 mode, u32 uid, u32 gid) { return yaffs_create_obj(YAFFS_OBJECT_TYPE_DIRECTORY, parent, name, - mode, uid, gid, NULL, NULL, 0); + mode, uid, gid, NULL, NULL, 0); } -yaffs_obj_t *yaffs_create_special(yaffs_obj_t *parent, const YCHAR *name, - __u32 mode, __u32 uid, __u32 gid, __u32 rdev) +struct yaffs_obj *yaffs_create_special(struct yaffs_obj *parent, + const YCHAR * name, u32 mode, u32 uid, + u32 gid, u32 rdev) { return yaffs_create_obj(YAFFS_OBJECT_TYPE_SPECIAL, parent, name, mode, - uid, gid, NULL, NULL, rdev); + uid, gid, NULL, NULL, rdev); } -yaffs_obj_t *yaffs_create_symlink(yaffs_obj_t *parent, const YCHAR *name, - __u32 mode, __u32 uid, __u32 gid, - const YCHAR *alias) +struct yaffs_obj *yaffs_create_symlink(struct yaffs_obj *parent, + const YCHAR * name, u32 mode, u32 uid, + u32 gid, const YCHAR * alias) { return yaffs_create_obj(YAFFS_OBJECT_TYPE_SYMLINK, parent, name, mode, uid, gid, NULL, alias, 0); } /* yaffs_link_obj returns the object id of the equivalent object.*/ -yaffs_obj_t *yaffs_link_obj(yaffs_obj_t *parent, const YCHAR *name, - yaffs_obj_t *equiv_obj) +struct yaffs_obj *yaffs_link_obj(struct yaffs_obj *parent, const YCHAR * name, + struct yaffs_obj *equiv_obj) { /* Get the real object in case we were fed a hard link as an equivalent object */ equiv_obj = yaffs_get_equivalent_obj(equiv_obj); @@ -1689,134 +2294,11 @@ yaffs_obj_t *yaffs_link_obj(yaffs_obj_t *parent, const YCHAR *name, } -static int yaffs_change_obj_name(yaffs_obj_t *obj, yaffs_obj_t *new_dir, - const YCHAR *new_name, int force, int shadows) -{ - int unlink_op; - int del_op; - - yaffs_obj_t *existing_target; - - if (new_dir == NULL) - new_dir = obj->parent; /* use the old directory */ - - if (new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("tragedy: yaffs_change_obj_name: new_dir is not a directory" - TENDSTR))); - YBUG(); - } - - /* TODO: Do we need this different handling for YAFFS2 and YAFFS1?? */ - if (obj->my_dev->param.is_yaffs2) - unlink_op = (new_dir == obj->my_dev->unlinked_dir); - else - unlink_op = (new_dir == obj->my_dev->unlinked_dir - && obj->variant_type == YAFFS_OBJECT_TYPE_FILE); - - del_op = (new_dir == obj->my_dev->del_dir); - - existing_target = yaffs_find_by_name(new_dir, new_name); - - /* If the object is a file going into the unlinked directory, - * then it is OK to just stuff it in since duplicate names are allowed. - * else only proceed if the new name does not exist and if we're putting - * it into a directory. - */ - if ((unlink_op || - del_op || - force || - (shadows > 0) || - !existing_target) && - new_dir->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) { - yaffs_set_obj_name(obj, new_name); - obj->dirty = 1; - - yaffs_add_obj_to_dir(new_dir, obj); - - if (unlink_op) - obj->unlinked = 1; - - /* If it is a deletion then we mark it as a shrink for gc purposes. */ - if (yaffs_update_oh(obj, new_name, 0, del_op, shadows, NULL) >= 0) - return YAFFS_OK; - } - - return YAFFS_FAIL; -} - -int yaffs_rename_obj(yaffs_obj_t *old_dir, const YCHAR *old_name, - yaffs_obj_t *new_dir, const YCHAR *new_name) -{ - yaffs_obj_t *obj = NULL; - yaffs_obj_t *existing_target = NULL; - int force = 0; - int result; - yaffs_dev_t *dev; - - - if (!old_dir || old_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) - YBUG(); - if (!new_dir || new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) - YBUG(); - - dev = old_dir->my_dev; - -#ifdef CONFIG_YAFFS_CASE_INSENSITIVE - /* Special case for case insemsitive systems (eg. WinCE). - * While look-up is case insensitive, the name isn't. - * Therefore we might want to change x.txt to X.txt - */ - if (old_dir == new_dir && yaffs_strcmp(old_name, new_name) == 0) - force = 1; -#endif - - if(yaffs_strnlen(new_name,YAFFS_MAX_NAME_LENGTH+1) > YAFFS_MAX_NAME_LENGTH) - /* ENAMETOOLONG */ - return YAFFS_FAIL; - - obj = yaffs_find_by_name(old_dir, old_name); - - if (obj && obj->rename_allowed) { - - /* Now do the handling for an existing target, if there is one */ - - existing_target = yaffs_find_by_name(new_dir, new_name); - if (existing_target && - existing_target->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY && - !ylist_empty(&existing_target->variant.dir_variant.children)) { - /* There is a target that is a non-empty directory, so we fail */ - return YAFFS_FAIL; /* EEXIST or ENOTEMPTY */ - } else if (existing_target && existing_target != obj) { - /* Nuke the target first, using shadowing, - * but only if it isn't the same object. - * - * Note we must disable gc otherwise it can mess up the shadowing. - * - */ - dev->gc_disable=1; - yaffs_change_obj_name(obj, new_dir, new_name, force, - existing_target->obj_id); - existing_target->is_shadowed = 1; - yaffs_unlink_obj(existing_target); - dev->gc_disable=0; - } - - result = yaffs_change_obj_name(obj, new_dir, new_name, 1, 0); - yaffs_update_parent(old_dir); - if(new_dir != old_dir) - yaffs_update_parent(new_dir); - - return result; - } - return YAFFS_FAIL; -} /*------------------------- Block Management and Page Allocation ----------------*/ -static int yaffs_init_blocks(yaffs_dev_t *dev) +static int yaffs_init_blocks(struct yaffs_dev *dev) { int n_blocks = dev->internal_end_block - dev->internal_start_block + 1; @@ -1826,278 +2308,138 @@ static int yaffs_init_blocks(yaffs_dev_t *dev) dev->alloc_block = -1; /* force it to get a new one */ /* If the first allocation strategy fails, thry the alternate one */ - dev->block_info = YMALLOC(n_blocks * sizeof(yaffs_block_info_t)); + dev->block_info = + kmalloc(n_blocks * sizeof(struct yaffs_block_info), GFP_NOFS); if (!dev->block_info) { - dev->block_info = YMALLOC_ALT(n_blocks * sizeof(yaffs_block_info_t)); + dev->block_info = + vmalloc(n_blocks * sizeof(struct yaffs_block_info)); dev->block_info_alt = 1; - } else - dev->block_info_alt = 0; - - if (dev->block_info) { - /* Set up dynamic blockinfo stuff. */ - dev->chunk_bit_stride = (dev->param.chunks_per_block + 7) / 8; /* round up bytes */ - dev->chunk_bits = YMALLOC(dev->chunk_bit_stride * n_blocks); - if (!dev->chunk_bits) { - dev->chunk_bits = YMALLOC_ALT(dev->chunk_bit_stride * n_blocks); - dev->chunk_bits_alt = 1; - } else - dev->chunk_bits_alt = 0; - } - - if (dev->block_info && dev->chunk_bits) { - memset(dev->block_info, 0, n_blocks * sizeof(yaffs_block_info_t)); - memset(dev->chunk_bits, 0, dev->chunk_bit_stride * n_blocks); - return YAFFS_OK; - } - - return YAFFS_FAIL; -} - -static void yaffs_deinit_blocks(yaffs_dev_t *dev) -{ - if (dev->block_info_alt && dev->block_info) - YFREE_ALT(dev->block_info); - else if (dev->block_info) - YFREE(dev->block_info); - - dev->block_info_alt = 0; - - dev->block_info = NULL; - - if (dev->chunk_bits_alt && dev->chunk_bits) - YFREE_ALT(dev->chunk_bits); - else if (dev->chunk_bits) - YFREE(dev->chunk_bits); - dev->chunk_bits_alt = 0; - dev->chunk_bits = NULL; -} - -void yaffs_block_became_dirty(yaffs_dev_t *dev, int block_no) -{ - yaffs_block_info_t *bi = yaffs_get_block_info(dev, block_no); - - int erased_ok = 0; - - /* If the block is still healthy erase it and mark as clean. - * If the block has had a data failure, then retire it. - */ - - T(YAFFS_TRACE_GC | YAFFS_TRACE_ERASE, - (TSTR("yaffs_block_became_dirty block %d state %d %s"TENDSTR), - block_no, bi->block_state, (bi->needs_retiring) ? "needs retiring" : "")); - - yaffs2_clear_oldest_dirty_seq(dev,bi); - - bi->block_state = YAFFS_BLOCK_STATE_DIRTY; - - /* If this is the block being garbage collected then stop gc'ing this block */ - if(block_no == dev->gc_block) - dev->gc_block = 0; - - /* If this block is currently the best candidate for gc then drop as a candidate */ - if(block_no == dev->gc_dirtiest){ - dev->gc_dirtiest = 0; - dev->gc_pages_in_use = 0; - } - - if (!bi->needs_retiring) { - yaffs2_checkpt_invalidate(dev); - erased_ok = yaffs_erase_block(dev, block_no); - if (!erased_ok) { - dev->n_erase_failures++; - T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, - (TSTR("**>> Erasure failed %d" TENDSTR), block_no)); - } - } - - if (erased_ok && - ((yaffs_trace_mask & YAFFS_TRACE_ERASE) || !yaffs_skip_verification(dev))) { - int i; - for (i = 0; i < dev->param.chunks_per_block; i++) { - if (!yaffs_check_chunk_erased - (dev, block_no * dev->param.chunks_per_block + i)) { - T(YAFFS_TRACE_ERROR, - (TSTR - (">>Block %d erasure supposedly OK, but chunk %d not erased" - TENDSTR), block_no, i)); - } - } - } - - if (erased_ok) { - /* Clean it up... */ - bi->block_state = YAFFS_BLOCK_STATE_EMPTY; - bi->seq_number = 0; - dev->n_erased_blocks++; - bi->pages_in_use = 0; - bi->soft_del_pages = 0; - bi->has_shrink_hdr = 0; - bi->skip_erased_check = 1; /* This is clean, so no need to check */ - bi->gc_prioritise = 0; - yaffs_clear_chunk_bits(dev, block_no); - - T(YAFFS_TRACE_ERASE, - (TSTR("Erased block %d" TENDSTR), block_no)); } else { - dev->n_free_chunks -= dev->param.chunks_per_block; /* We lost a block of free space */ - - yaffs_retire_block(dev, block_no); - T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, - (TSTR("**>> Block %d retired" TENDSTR), block_no)); - } -} - -static int yaffs_find_alloc_block(yaffs_dev_t *dev) -{ - int i; - - yaffs_block_info_t *bi; - - if (dev->n_erased_blocks < 1) { - /* Hoosterman we've got a problem. - * Can't get space to gc - */ - T(YAFFS_TRACE_ERROR, - (TSTR("yaffs tragedy: no more erased blocks" TENDSTR))); - - return -1; - } - - /* Find an empty block. */ - - for (i = dev->internal_start_block; i <= dev->internal_end_block; i++) { - dev->alloc_block_finder++; - if (dev->alloc_block_finder < dev->internal_start_block - || dev->alloc_block_finder > dev->internal_end_block) { - dev->alloc_block_finder = dev->internal_start_block; - } - - bi = yaffs_get_block_info(dev, dev->alloc_block_finder); - - if (bi->block_state == YAFFS_BLOCK_STATE_EMPTY) { - bi->block_state = YAFFS_BLOCK_STATE_ALLOCATING; - dev->seq_number++; - bi->seq_number = dev->seq_number; - dev->n_erased_blocks--; - T(YAFFS_TRACE_ALLOCATE, - (TSTR("Allocated block %d, seq %d, %d left" TENDSTR), - dev->alloc_block_finder, dev->seq_number, - dev->n_erased_blocks)); - return dev->alloc_block_finder; - } - } - - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("yaffs tragedy: no more erased blocks, but there should have been %d" - TENDSTR), dev->n_erased_blocks)); - - return -1; -} - - -/* - * Check if there's space to allocate... - * Thinks.... do we need top make this ths same as yaffs_get_free_chunks()? - */ -int yaffs_check_alloc_available(yaffs_dev_t *dev, int n_chunks) -{ - int reserved_chunks; - int reserved_blocks = dev->param.n_reserved_blocks; - int checkpt_blocks; - - checkpt_blocks = yaffs_calc_checkpt_blocks_required(dev); - - reserved_chunks = ((reserved_blocks + checkpt_blocks) * dev->param.chunks_per_block); - - return (dev->n_free_chunks > (reserved_chunks + n_chunks)); -} - -static int yaffs_alloc_chunk(yaffs_dev_t *dev, int use_reserver, - yaffs_block_info_t **block_ptr) -{ - int ret_val; - yaffs_block_info_t *bi; - - if (dev->alloc_block < 0) { - /* Get next block to allocate off */ - dev->alloc_block = yaffs_find_alloc_block(dev); - dev->alloc_page = 0; - } - - if (!use_reserver && !yaffs_check_alloc_available(dev, 1)) { - /* Not enough space to allocate unless we're allowed to use the reserve. */ - return -1; + dev->block_info_alt = 0; + } + + if (dev->block_info) { + /* Set up dynamic blockinfo stuff. Round up bytes. */ + dev->chunk_bit_stride = (dev->param.chunks_per_block + 7) / 8; + dev->chunk_bits = + kmalloc(dev->chunk_bit_stride * n_blocks, GFP_NOFS); + if (!dev->chunk_bits) { + dev->chunk_bits = + vmalloc(dev->chunk_bit_stride * n_blocks); + dev->chunk_bits_alt = 1; + } else { + dev->chunk_bits_alt = 0; + } } - if (dev->n_erased_blocks < dev->param.n_reserved_blocks - && dev->alloc_page == 0) { - T(YAFFS_TRACE_ALLOCATE, (TSTR("Allocating reserve" TENDSTR))); + if (dev->block_info && dev->chunk_bits) { + memset(dev->block_info, 0, + n_blocks * sizeof(struct yaffs_block_info)); + memset(dev->chunk_bits, 0, dev->chunk_bit_stride * n_blocks); + return YAFFS_OK; } - /* Next page please.... */ - if (dev->alloc_block >= 0) { - bi = yaffs_get_block_info(dev, dev->alloc_block); + return YAFFS_FAIL; +} - ret_val = (dev->alloc_block * dev->param.chunks_per_block) + - dev->alloc_page; - bi->pages_in_use++; - yaffs_set_chunk_bit(dev, dev->alloc_block, - dev->alloc_page); +static void yaffs_deinit_blocks(struct yaffs_dev *dev) +{ + if (dev->block_info_alt && dev->block_info) + vfree(dev->block_info); + else if (dev->block_info) + kfree(dev->block_info); - dev->alloc_page++; + dev->block_info_alt = 0; - dev->n_free_chunks--; + dev->block_info = NULL; - /* If the block is full set the state to full */ - if (dev->alloc_page >= dev->param.chunks_per_block) { - bi->block_state = YAFFS_BLOCK_STATE_FULL; - dev->alloc_block = -1; - } + if (dev->chunk_bits_alt && dev->chunk_bits) + vfree(dev->chunk_bits); + else if (dev->chunk_bits) + kfree(dev->chunk_bits); + dev->chunk_bits_alt = 0; + dev->chunk_bits = NULL; +} - if (block_ptr) - *block_ptr = bi; +void yaffs_block_became_dirty(struct yaffs_dev *dev, int block_no) +{ + struct yaffs_block_info *bi = yaffs_get_block_info(dev, block_no); - return ret_val; - } + int erased_ok = 0; - T(YAFFS_TRACE_ERROR, - (TSTR("!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!" TENDSTR))); + /* If the block is still healthy erase it and mark as clean. + * If the block has had a data failure, then retire it. + */ - return -1; -} + yaffs_trace(YAFFS_TRACE_GC | YAFFS_TRACE_ERASE, + "yaffs_block_became_dirty block %d state %d %s", + block_no, bi->block_state, + (bi->needs_retiring) ? "needs retiring" : ""); -static int yaffs_get_erased_chunks(yaffs_dev_t *dev) -{ - int n; + yaffs2_clear_oldest_dirty_seq(dev, bi); - n = dev->n_erased_blocks * dev->param.chunks_per_block; + bi->block_state = YAFFS_BLOCK_STATE_DIRTY; - if (dev->alloc_block > 0) - n += (dev->param.chunks_per_block - dev->alloc_page); + /* If this is the block being garbage collected then stop gc'ing this block */ + if (block_no == dev->gc_block) + dev->gc_block = 0; - return n; + /* If this block is currently the best candidate for gc then drop as a candidate */ + if (block_no == dev->gc_dirtiest) { + dev->gc_dirtiest = 0; + dev->gc_pages_in_use = 0; + } -} + if (!bi->needs_retiring) { + yaffs2_checkpt_invalidate(dev); + erased_ok = yaffs_erase_block(dev, block_no); + if (!erased_ok) { + dev->n_erase_failures++; + yaffs_trace(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, + "**>> Erasure failed %d", block_no); + } + } -/* - * yaffs_skip_rest_of_block() skips over the rest of the allocation block - * if we don't want to write to it. - */ -void yaffs_skip_rest_of_block(yaffs_dev_t *dev) -{ - if(dev->alloc_block > 0){ - yaffs_block_info_t *bi = yaffs_get_block_info(dev, dev->alloc_block); - if(bi->block_state == YAFFS_BLOCK_STATE_ALLOCATING){ - bi->block_state = YAFFS_BLOCK_STATE_FULL; - dev->alloc_block = -1; + if (erased_ok && + ((yaffs_trace_mask & YAFFS_TRACE_ERASE) + || !yaffs_skip_verification(dev))) { + int i; + for (i = 0; i < dev->param.chunks_per_block; i++) { + if (!yaffs_check_chunk_erased + (dev, block_no * dev->param.chunks_per_block + i)) { + yaffs_trace(YAFFS_TRACE_ERROR, + ">>Block %d erasure supposedly OK, but chunk %d not erased", + block_no, i); + } } } + + if (erased_ok) { + /* Clean it up... */ + bi->block_state = YAFFS_BLOCK_STATE_EMPTY; + bi->seq_number = 0; + dev->n_erased_blocks++; + bi->pages_in_use = 0; + bi->soft_del_pages = 0; + bi->has_shrink_hdr = 0; + bi->skip_erased_check = 1; /* Clean, so no need to check */ + bi->gc_prioritise = 0; + yaffs_clear_chunk_bits(dev, block_no); + + yaffs_trace(YAFFS_TRACE_ERASE, + "Erased block %d", block_no); + } else { + /* We lost a block of free space */ + dev->n_free_chunks -= dev->param.chunks_per_block; + yaffs_retire_block(dev, block_no); + yaffs_trace(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS, + "**>> Block %d retired", block_no); + } } -static int yaffs_gc_block(yaffs_dev_t *dev, int block, - int whole_block) + +static int yaffs_gc_block(struct yaffs_dev *dev, int block, int whole_block) { int old_chunk; int new_chunk; @@ -2111,53 +2453,47 @@ static int yaffs_gc_block(yaffs_dev_t *dev, int block, int chunks_before = yaffs_get_erased_chunks(dev); int chunks_after; - yaffs_ext_tags tags; + struct yaffs_ext_tags tags; - yaffs_block_info_t *bi = yaffs_get_block_info(dev, block); + struct yaffs_block_info *bi = yaffs_get_block_info(dev, block); - yaffs_obj_t *object; + struct yaffs_obj *object; is_checkpt_block = (bi->block_state == YAFFS_BLOCK_STATE_CHECKPOINT); - - T(YAFFS_TRACE_TRACING, - (TSTR("Collecting block %d, in use %d, shrink %d, whole_block %d" TENDSTR), - block, - bi->pages_in_use, - bi->has_shrink_hdr, - whole_block)); + yaffs_trace(YAFFS_TRACE_TRACING, + "Collecting block %d, in use %d, shrink %d, whole_block %d", + block, bi->pages_in_use, bi->has_shrink_hdr, + whole_block); /*yaffs_verify_free_chunks(dev); */ - if(bi->block_state == YAFFS_BLOCK_STATE_FULL) + if (bi->block_state == YAFFS_BLOCK_STATE_FULL) bi->block_state = YAFFS_BLOCK_STATE_COLLECTING; - + bi->has_shrink_hdr = 0; /* clear the flag so that the block can erase */ dev->gc_disable = 1; - if (is_checkpt_block || - !yaffs_still_some_chunks(dev, block)) { - T(YAFFS_TRACE_TRACING, - (TSTR - ("Collecting block %d that has no chunks in use" TENDSTR), - block)); + if (is_checkpt_block || !yaffs_still_some_chunks(dev, block)) { + yaffs_trace(YAFFS_TRACE_TRACING, + "Collecting block %d that has no chunks in use", + block); yaffs_block_became_dirty(dev, block); } else { - __u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__); + u8 *buffer = yaffs_get_temp_buffer(dev, __LINE__); yaffs_verify_blk(dev, bi, block); max_copies = (whole_block) ? dev->param.chunks_per_block : 5; old_chunk = block * dev->param.chunks_per_block + dev->gc_chunk; - for (/* init already done */; + for ( /* init already done */ ; ret_val == YAFFS_OK && dev->gc_chunk < dev->param.chunks_per_block && (bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) && - max_copies > 0; - dev->gc_chunk++, old_chunk++) { + max_copies > 0; dev->gc_chunk++, old_chunk++) { if (yaffs_check_chunk_bit(dev, block, dev->gc_chunk)) { /* This page is in use and might need to be copied off */ @@ -2169,51 +2505,54 @@ static int yaffs_gc_block(yaffs_dev_t *dev, int block, yaffs_init_tags(&tags); yaffs_rd_chunk_tags_nand(dev, old_chunk, - buffer, &tags); + buffer, &tags); - object = - yaffs_find_by_number(dev, - tags.obj_id); + object = yaffs_find_by_number(dev, tags.obj_id); - T(YAFFS_TRACE_GC_DETAIL, - (TSTR - ("Collecting chunk in block %d, %d %d %d " TENDSTR), - dev->gc_chunk, tags.obj_id, tags.chunk_id, - tags.n_bytes)); + yaffs_trace(YAFFS_TRACE_GC_DETAIL, + "Collecting chunk in block %d, %d %d %d ", + dev->gc_chunk, tags.obj_id, + tags.chunk_id, tags.n_bytes); if (object && !yaffs_skip_verification(dev)) { if (tags.chunk_id == 0) - matching_chunk = object->hdr_chunk; + matching_chunk = + object->hdr_chunk; else if (object->soft_del) - matching_chunk = old_chunk; /* Defeat the test */ + matching_chunk = old_chunk; /* Defeat the test */ else - matching_chunk = yaffs_find_chunk_in_file(object, tags.chunk_id, NULL); + matching_chunk = + yaffs_find_chunk_in_file + (object, tags.chunk_id, + NULL); if (old_chunk != matching_chunk) - T(YAFFS_TRACE_ERROR, - (TSTR("gc: page in gc mismatch: %d %d %d %d"TENDSTR), - old_chunk, matching_chunk, tags.obj_id, tags.chunk_id)); + yaffs_trace(YAFFS_TRACE_ERROR, + "gc: page in gc mismatch: %d %d %d %d", + old_chunk, + matching_chunk, + tags.obj_id, + tags.chunk_id); } if (!object) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("page %d in gc has no object: %d %d %d " - TENDSTR), old_chunk, - tags.obj_id, tags.chunk_id, tags.n_bytes)); + yaffs_trace(YAFFS_TRACE_ERROR, + "page %d in gc has no object: %d %d %d ", + old_chunk, + tags.obj_id, tags.chunk_id, + tags.n_bytes); } if (object && object->deleted && - object->soft_del && - tags.chunk_id != 0) { + object->soft_del && tags.chunk_id != 0) { /* Data chunk in a soft deleted file, throw it away * It's a soft deleted data chunk, * No need to copy this, just forget about it and * fix up the object. */ - + /* Free chunks already includes softdeleted chunks. * How ever this chunk is going to soon be really deleted * which will increment free chunks. @@ -2226,8 +2565,9 @@ static int yaffs_gc_block(yaffs_dev_t *dev, int block, if (object->n_data_chunks <= 0) { /* remeber to clean up the object */ - dev->gc_cleanup_list[dev->n_clean_ups] = - tags.obj_id; + dev->gc_cleanup_list[dev-> + n_clean_ups] + = tags.obj_id; dev->n_clean_ups++; } mark_flash = 0; @@ -2238,8 +2578,9 @@ static int yaffs_gc_block(yaffs_dev_t *dev, int block, */ object->hdr_chunk = 0; yaffs_free_tnode(object->my_dev, - object->variant. - file_variant.top); + object-> + variant.file_variant. + top); object->variant.file_variant.top = NULL; yaffs_generic_obj_del(object); @@ -2261,8 +2602,9 @@ static int yaffs_gc_block(yaffs_dev_t *dev, int block, * and if it is left in place it will mess up scanning. */ - yaffs_obj_header *oh; - oh = (yaffs_obj_header *)buffer; + struct yaffs_obj_hdr *oh; + oh = (struct yaffs_obj_hdr *) + buffer; oh->is_shrink = 0; tags.extra_is_shrink = 0; @@ -2272,17 +2614,31 @@ static int yaffs_gc_block(yaffs_dev_t *dev, int block, tags.extra_shadows = 0; /* Update file size */ - if(object->variant_type == YAFFS_OBJECT_TYPE_FILE){ - oh->file_size = object->variant.file_variant.file_size; - tags.extra_length = oh->file_size; + if (object->variant_type == + YAFFS_OBJECT_TYPE_FILE) { + oh->file_size = + object->variant. + file_variant. + file_size; + tags.extra_length = + oh->file_size; } - yaffs_verify_oh(object, oh, &tags, 1); + yaffs_verify_oh(object, oh, + &tags, 1); new_chunk = - yaffs_write_new_chunk(dev,(__u8 *) oh, &tags, 1); - } else + yaffs_write_new_chunk(dev, + (u8 *) + oh, + &tags, + 1); + } else { new_chunk = - yaffs_write_new_chunk(dev, buffer, &tags, 1); + yaffs_write_new_chunk(dev, + buffer, + &tags, + 1); + } if (new_chunk < 0) { ret_val = YAFFS_FAIL; @@ -2292,35 +2648,31 @@ static int yaffs_gc_block(yaffs_dev_t *dev, int block, if (tags.chunk_id == 0) { /* It's a header */ - object->hdr_chunk = new_chunk; - object->serial = tags.serial_number; + object->hdr_chunk = + new_chunk; + object->serial = + tags.serial_number; } else { /* It's a data chunk */ int ok; - ok = yaffs_put_chunk_in_file - (object, - tags.chunk_id, - new_chunk, 0); + ok = yaffs_put_chunk_in_file(object, tags.chunk_id, new_chunk, 0); } } } if (ret_val == YAFFS_OK) - yaffs_chunk_del(dev, old_chunk, mark_flash, __LINE__); + yaffs_chunk_del(dev, old_chunk, + mark_flash, __LINE__); } } yaffs_release_temp_buffer(dev, buffer, __LINE__); - - } yaffs_verify_collected_blk(dev, bi, block); - - if (bi->block_state == YAFFS_BLOCK_STATE_COLLECTING) { /* * The gc did not complete. Set block state back to FULL @@ -2333,31 +2685,26 @@ static int yaffs_gc_block(yaffs_dev_t *dev, int block, for (i = 0; i < dev->n_clean_ups; i++) { /* Time to delete the file too */ object = - yaffs_find_by_number(dev, - dev->gc_cleanup_list[i]); + yaffs_find_by_number(dev, dev->gc_cleanup_list[i]); if (object) { yaffs_free_tnode(dev, - object->variant.file_variant. - top); + object->variant. + file_variant.top); object->variant.file_variant.top = NULL; - T(YAFFS_TRACE_GC, - (TSTR - ("yaffs: About to finally delete object %d" - TENDSTR), object->obj_id)); + yaffs_trace(YAFFS_TRACE_GC, + "yaffs: About to finally delete object %d", + object->obj_id); yaffs_generic_obj_del(object); object->my_dev->n_deleted_files--; } } - chunks_after = yaffs_get_erased_chunks(dev); - if (chunks_before >= chunks_after) { - T(YAFFS_TRACE_GC, - (TSTR - ("gc did not increase free chunks before %d after %d" - TENDSTR), chunks_before, chunks_after)); - } + if (chunks_before >= chunks_after) + yaffs_trace(YAFFS_TRACE_GC, + "gc did not increase free chunks before %d after %d", + chunks_before, chunks_after); dev->gc_block = 0; dev->gc_chunk = 0; dev->n_clean_ups = 0; @@ -2373,16 +2720,15 @@ static int yaffs_gc_block(yaffs_dev_t *dev, int block, * for garbage collection. */ -static unsigned yaffs_find_gc_block(yaffs_dev_t *dev, - int aggressive, - int background) +static unsigned yaffs_find_gc_block(struct yaffs_dev *dev, + int aggressive, int background) { int i; int iterations; unsigned selected = 0; int prioritised = 0; int prioritised_exist = 0; - yaffs_block_info_t *bi; + struct yaffs_block_info *bi; int threshold; /* First let's see if we need to grab a prioritised block */ @@ -2390,13 +2736,12 @@ static unsigned yaffs_find_gc_block(yaffs_dev_t *dev, dev->gc_dirtiest = 0; bi = dev->block_info; for (i = dev->internal_start_block; - i <= dev->internal_end_block && !selected; - i++) { + i <= dev->internal_end_block && !selected; i++) { if (bi->gc_prioritise) { prioritised_exist = 1; if (bi->block_state == YAFFS_BLOCK_STATE_FULL && - yaffs_block_ok_for_gc(dev, bi)) { + yaffs_block_ok_for_gc(dev, bi)) { selected = i; prioritised = 1; } @@ -2410,12 +2755,11 @@ static unsigned yaffs_find_gc_block(yaffs_dev_t *dev, * up the works. Let's gc the oldest dirty block. */ - if(prioritised_exist && - !selected && - dev->oldest_dirty_block > 0) + if (prioritised_exist && + !selected && dev->oldest_dirty_block > 0) selected = dev->oldest_dirty_block; - if (!prioritised_exist) /* None found, so we can clear this */ + if (!prioritised_exist) /* None found, so we can clear this */ dev->has_pending_prioritised_gc = 0; } @@ -2425,28 +2769,28 @@ static unsigned yaffs_find_gc_block(yaffs_dev_t *dev, * block has only a few pages in use. */ - if (!selected){ + if (!selected) { int pages_used; - int n_blocks = dev->internal_end_block - dev->internal_start_block + 1; - if (aggressive){ + int n_blocks = + dev->internal_end_block - dev->internal_start_block + 1; + if (aggressive) { threshold = dev->param.chunks_per_block; iterations = n_blocks; } else { int max_threshold; - if(background) - max_threshold = dev->param.chunks_per_block/2; + if (background) + max_threshold = dev->param.chunks_per_block / 2; else - max_threshold = dev->param.chunks_per_block/8; + max_threshold = dev->param.chunks_per_block / 8; - if(max_threshold < YAFFS_GC_PASSIVE_THRESHOLD) + if (max_threshold < YAFFS_GC_PASSIVE_THRESHOLD) max_threshold = YAFFS_GC_PASSIVE_THRESHOLD; - threshold = background ? - (dev->gc_not_done + 2) * 2 : 0; - if(threshold gc_not_done + 2) * 2 : 0; + if (threshold < YAFFS_GC_PASSIVE_THRESHOLD) threshold = YAFFS_GC_PASSIVE_THRESHOLD; - if(threshold > max_threshold) + if (threshold > max_threshold) threshold = max_threshold; iterations = n_blocks / 16 + 1; @@ -2455,29 +2799,30 @@ static unsigned yaffs_find_gc_block(yaffs_dev_t *dev, } for (i = 0; - i < iterations && - (dev->gc_dirtiest < 1 || - dev->gc_pages_in_use > YAFFS_GC_GOOD_ENOUGH); - i++) { + i < iterations && + (dev->gc_dirtiest < 1 || + dev->gc_pages_in_use > YAFFS_GC_GOOD_ENOUGH); i++) { dev->gc_block_finder++; if (dev->gc_block_finder < dev->internal_start_block || - dev->gc_block_finder > dev->internal_end_block) - dev->gc_block_finder = dev->internal_start_block; + dev->gc_block_finder > dev->internal_end_block) + dev->gc_block_finder = + dev->internal_start_block; bi = yaffs_get_block_info(dev, dev->gc_block_finder); pages_used = bi->pages_in_use - bi->soft_del_pages; if (bi->block_state == YAFFS_BLOCK_STATE_FULL && - pages_used < dev->param.chunks_per_block && - (dev->gc_dirtiest < 1 || pages_used < dev->gc_pages_in_use) && - yaffs_block_ok_for_gc(dev, bi)) { + pages_used < dev->param.chunks_per_block && + (dev->gc_dirtiest < 1 + || pages_used < dev->gc_pages_in_use) + && yaffs_block_ok_for_gc(dev, bi)) { dev->gc_dirtiest = dev->gc_block_finder; dev->gc_pages_in_use = pages_used; } } - if(dev->gc_dirtiest > 0 && dev->gc_pages_in_use <= threshold) + if (dev->gc_dirtiest > 0 && dev->gc_pages_in_use <= threshold) selected = dev->gc_dirtiest; } @@ -2486,44 +2831,44 @@ static unsigned yaffs_find_gc_block(yaffs_dev_t *dev, * because that's gumming up the works. */ - if(!selected && dev->param.is_yaffs2 && - dev->gc_not_done >= ( background ? 10 : 20)){ + if (!selected && dev->param.is_yaffs2 && + dev->gc_not_done >= (background ? 10 : 20)) { yaffs2_find_oldest_dirty_seq(dev); - if(dev->oldest_dirty_block > 0) { + if (dev->oldest_dirty_block > 0) { selected = dev->oldest_dirty_block; dev->gc_dirtiest = selected; dev->oldest_dirty_gc_count++; bi = yaffs_get_block_info(dev, selected); - dev->gc_pages_in_use = bi->pages_in_use - bi->soft_del_pages; - } else + dev->gc_pages_in_use = + bi->pages_in_use - bi->soft_del_pages; + } else { dev->gc_not_done = 0; + } } - if(selected){ - T(YAFFS_TRACE_GC, - (TSTR("GC Selected block %d with %d free, prioritised:%d" TENDSTR), - selected, - dev->param.chunks_per_block - dev->gc_pages_in_use, - prioritised)); + if (selected) { + yaffs_trace(YAFFS_TRACE_GC, + "GC Selected block %d with %d free, prioritised:%d", + selected, + dev->param.chunks_per_block - dev->gc_pages_in_use, + prioritised); dev->n_gc_blocks++; - if(background) + if (background) dev->bg_gcs++; dev->gc_dirtiest = 0; dev->gc_pages_in_use = 0; dev->gc_not_done = 0; - if(dev->refresh_skip > 0) + if (dev->refresh_skip > 0) dev->refresh_skip--; - } else{ + } else { dev->gc_not_done++; - T(YAFFS_TRACE_GC, - (TSTR("GC none: finder %d skip %d threshold %d dirtiest %d using %d oldest %d%s" TENDSTR), - dev->gc_block_finder, dev->gc_not_done, - threshold, - dev->gc_dirtiest, dev->gc_pages_in_use, - dev->oldest_dirty_block, - background ? " bg" : "")); + yaffs_trace(YAFFS_TRACE_GC, + "GC none: finder %d skip %d threshold %d dirtiest %d using %d oldest %d%s", + dev->gc_block_finder, dev->gc_not_done, threshold, + dev->gc_dirtiest, dev->gc_pages_in_use, + dev->oldest_dirty_block, background ? " bg" : ""); } return selected; @@ -2538,7 +2883,7 @@ static unsigned yaffs_find_gc_block(yaffs_dev_t *dev, * The idea is to help clear out space in a more spread-out manner. * Dunno if it really does anything useful. */ -static int yaffs_check_gc(yaffs_dev_t *dev, int background) +static int yaffs_check_gc(struct yaffs_dev *dev, int background) { int aggressive = 0; int gc_ok = YAFFS_OK; @@ -2547,308 +2892,106 @@ static int yaffs_check_gc(yaffs_dev_t *dev, int background) int erased_chunks; int checkpt_block_adjust; - if(dev->param.gc_control && - (dev->param.gc_control(dev) & 1) == 0) + if (dev->param.gc_control && (dev->param.gc_control(dev) & 1) == 0) return YAFFS_OK; if (dev->gc_disable) { - /* Bail out so we don't get recursive gc */ - return YAFFS_OK; - } - - /* This loop should pass the first time. - * We'll only see looping here if the collection does not increase space. - */ - - do { - max_tries++; - - checkpt_block_adjust = yaffs_calc_checkpt_blocks_required(dev); - - min_erased = dev->param.n_reserved_blocks + checkpt_block_adjust + 1; - erased_chunks = dev->n_erased_blocks * dev->param.chunks_per_block; - - /* If we need a block soon then do aggressive gc.*/ - if (dev->n_erased_blocks < min_erased) - aggressive = 1; - else { - if(!background && erased_chunks > (dev->n_free_chunks / 4)) - break; - - if(dev->gc_skip > 20) - dev->gc_skip = 20; - if(erased_chunks < dev->n_free_chunks/2 || - dev->gc_skip < 1 || - background) - aggressive = 0; - else { - dev->gc_skip--; - break; - } - } - - dev->gc_skip = 5; - - /* If we don't already have a block being gc'd then see if we should start another */ - - if (dev->gc_block < 1 && !aggressive) { - dev->gc_block = yaffs2_find_refresh_block(dev); - dev->gc_chunk = 0; - dev->n_clean_ups=0; - } - if (dev->gc_block < 1) { - dev->gc_block = yaffs_find_gc_block(dev, aggressive, background); - dev->gc_chunk = 0; - dev->n_clean_ups=0; - } - - if (dev->gc_block > 0) { - dev->all_gcs++; - if (!aggressive) - dev->passive_gc_count++; - - T(YAFFS_TRACE_GC, - (TSTR - ("yaffs: GC n_erased_blocks %d aggressive %d" TENDSTR), - dev->n_erased_blocks, aggressive)); - - gc_ok = yaffs_gc_block(dev, dev->gc_block, aggressive); - } - - if (dev->n_erased_blocks < (dev->param.n_reserved_blocks) && dev->gc_block > 0) { - T(YAFFS_TRACE_GC, - (TSTR - ("yaffs: GC !!!no reclaim!!! n_erased_blocks %d after try %d block %d" - TENDSTR), dev->n_erased_blocks, max_tries, dev->gc_block)); - } - } while ((dev->n_erased_blocks < dev->param.n_reserved_blocks) && - (dev->gc_block > 0) && - (max_tries < 2)); - - return aggressive ? gc_ok : YAFFS_OK; -} - -/* - * yaffs_bg_gc() - * Garbage collects. Intended to be called from a background thread. - * Returns non-zero if at least half the free chunks are erased. - */ -int yaffs_bg_gc(yaffs_dev_t *dev, unsigned urgency) -{ - int erased_chunks = dev->n_erased_blocks * dev->param.chunks_per_block; - - T(YAFFS_TRACE_BACKGROUND, (TSTR("Background gc %u" TENDSTR),urgency)); - - yaffs_check_gc(dev, 1); - return erased_chunks > dev->n_free_chunks/2; -} - -/*------------------------- TAGS --------------------------------*/ - -static int yaffs_tags_match(const yaffs_ext_tags *tags, int obj_id, - int chunk_obj) -{ - return (tags->chunk_id == chunk_obj && - tags->obj_id == obj_id && !tags->is_deleted) ? 1 : 0; - -} - - -/*-------------------- Data file manipulation -----------------*/ - -static int yaffs_find_chunk_in_file(yaffs_obj_t *in, int inode_chunk, - yaffs_ext_tags *tags) -{ - /*Get the Tnode, then get the level 0 offset chunk offset */ - yaffs_tnode_t *tn; - int the_chunk = -1; - yaffs_ext_tags local_tags; - int ret_val = -1; - - yaffs_dev_t *dev = in->my_dev; - - if (!tags) { - /* Passed a NULL, so use our own tags space */ - tags = &local_tags; - } - - tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk); - - if (tn) { - the_chunk = yaffs_get_group_base(dev, tn, inode_chunk); - - ret_val = - yaffs_find_chunk_in_group(dev, the_chunk, tags, in->obj_id, - inode_chunk); - } - return ret_val; -} - -static int yaffs_find_del_file_chunk(yaffs_obj_t *in, int inode_chunk, - yaffs_ext_tags *tags) -{ - /* Get the Tnode, then get the level 0 offset chunk offset */ - yaffs_tnode_t *tn; - int the_chunk = -1; - yaffs_ext_tags local_tags; - - yaffs_dev_t *dev = in->my_dev; - int ret_val = -1; - - if (!tags) { - /* Passed a NULL, so use our own tags space */ - tags = &local_tags; - } - - tn = yaffs_find_tnode_0(dev, &in->variant.file_variant, inode_chunk); - - if (tn) { - - the_chunk = yaffs_get_group_base(dev, tn, inode_chunk); - - ret_val = - yaffs_find_chunk_in_group(dev, the_chunk, tags, in->obj_id, - inode_chunk); - - /* Delete the entry in the filestructure (if found) */ - if (ret_val != -1) - yaffs_load_tnode_0(dev, tn, inode_chunk, 0); - } - - return ret_val; -} - - -int yaffs_put_chunk_in_file(yaffs_obj_t *in, int inode_chunk, - int nand_chunk, int in_scan) -{ - /* NB in_scan is zero unless scanning. - * For forward scanning, in_scan is > 0; - * for backward scanning in_scan is < 0 - * - * nand_chunk = 0 is a dummy insert to make sure the tnodes are there. - */ - - yaffs_tnode_t *tn; - yaffs_dev_t *dev = in->my_dev; - int existing_cunk; - yaffs_ext_tags existing_tags; - yaffs_ext_tags new_tags; - unsigned existing_serial, new_serial; - - if (in->variant_type != YAFFS_OBJECT_TYPE_FILE) { - /* Just ignore an attempt at putting a chunk into a non-file during scanning - * If it is not during Scanning then something went wrong! - */ - if (!in_scan) { - T(YAFFS_TRACE_ERROR, - (TSTR - ("yaffs tragedy:attempt to put data chunk into a non-file" - TENDSTR))); - YBUG(); - } - - yaffs_chunk_del(dev, nand_chunk, 1, __LINE__); + /* Bail out so we don't get recursive gc */ return YAFFS_OK; } - tn = yaffs_add_find_tnode_0(dev, - &in->variant.file_variant, - inode_chunk, - NULL); - if (!tn) - return YAFFS_FAIL; - - if(!nand_chunk) - /* Dummy insert, bail now */ - return YAFFS_OK; + /* This loop should pass the first time. + * We'll only see looping here if the collection does not increase space. + */ - existing_cunk = yaffs_get_group_base(dev, tn, inode_chunk); + do { + max_tries++; - if (in_scan != 0) { - /* If we're scanning then we need to test for duplicates - * NB This does not need to be efficient since it should only ever - * happen when the power fails during a write, then only one - * chunk should ever be affected. - * - * Correction for YAFFS2: This could happen quite a lot and we need to think about efficiency! TODO - * Update: For backward scanning we don't need to re-read tags so this is quite cheap. - */ + checkpt_block_adjust = yaffs_calc_checkpt_blocks_required(dev); - if (existing_cunk > 0) { - /* NB Right now existing chunk will not be real chunk_id if the chunk group size > 1 - * thus we have to do a FindChunkInFile to get the real chunk id. - * - * We have a duplicate now we need to decide which one to use: - * - * Backwards scanning YAFFS2: The old one is what we use, dump the new one. - * Forward scanning YAFFS2: The new one is what we use, dump the old one. - * YAFFS1: Get both sets of tags and compare serial numbers. - */ + min_erased = + dev->param.n_reserved_blocks + checkpt_block_adjust + 1; + erased_chunks = + dev->n_erased_blocks * dev->param.chunks_per_block; - if (in_scan > 0) { - /* Only do this for forward scanning */ - yaffs_rd_chunk_tags_nand(dev, - nand_chunk, - NULL, &new_tags); + /* If we need a block soon then do aggressive gc. */ + if (dev->n_erased_blocks < min_erased) + aggressive = 1; + else { + if (!background + && erased_chunks > (dev->n_free_chunks / 4)) + break; - /* Do a proper find */ - existing_cunk = - yaffs_find_chunk_in_file(in, inode_chunk, - &existing_tags); + if (dev->gc_skip > 20) + dev->gc_skip = 20; + if (erased_chunks < dev->n_free_chunks / 2 || + dev->gc_skip < 1 || background) + aggressive = 0; + else { + dev->gc_skip--; + break; } + } - if (existing_cunk <= 0) { - /*Hoosterman - how did this happen? */ + dev->gc_skip = 5; - T(YAFFS_TRACE_ERROR, - (TSTR - ("yaffs tragedy: existing chunk < 0 in scan" - TENDSTR))); + /* If we don't already have a block being gc'd then see if we should start another */ - } + if (dev->gc_block < 1 && !aggressive) { + dev->gc_block = yaffs2_find_refresh_block(dev); + dev->gc_chunk = 0; + dev->n_clean_ups = 0; + } + if (dev->gc_block < 1) { + dev->gc_block = + yaffs_find_gc_block(dev, aggressive, background); + dev->gc_chunk = 0; + dev->n_clean_ups = 0; + } - /* NB The deleted flags should be false, otherwise the chunks will - * not be loaded during a scan - */ + if (dev->gc_block > 0) { + dev->all_gcs++; + if (!aggressive) + dev->passive_gc_count++; - if (in_scan > 0) { - new_serial = new_tags.serial_number; - existing_serial = existing_tags.serial_number; - } + yaffs_trace(YAFFS_TRACE_GC, + "yaffs: GC n_erased_blocks %d aggressive %d", + dev->n_erased_blocks, aggressive); - if ((in_scan > 0) && - (existing_cunk <= 0 || - ((existing_serial + 1) & 3) == new_serial)) { - /* Forward scanning. - * Use new - * Delete the old one and drop through to update the tnode - */ - yaffs_chunk_del(dev, existing_cunk, 1, - __LINE__); - } else { - /* Backward scanning or we want to use the existing one - * Use existing. - * Delete the new one and return early so that the tnode isn't changed - */ - yaffs_chunk_del(dev, nand_chunk, 1, - __LINE__); - return YAFFS_OK; - } + gc_ok = yaffs_gc_block(dev, dev->gc_block, aggressive); } - } + if (dev->n_erased_blocks < (dev->param.n_reserved_blocks) + && dev->gc_block > 0) { + yaffs_trace(YAFFS_TRACE_GC, + "yaffs: GC !!!no reclaim!!! n_erased_blocks %d after try %d block %d", + dev->n_erased_blocks, max_tries, + dev->gc_block); + } + } while ((dev->n_erased_blocks < dev->param.n_reserved_blocks) && + (dev->gc_block > 0) && (max_tries < 2)); - if (existing_cunk == 0) - in->n_data_chunks++; + return aggressive ? gc_ok : YAFFS_OK; +} - yaffs_load_tnode_0(dev, tn, inode_chunk, nand_chunk); +/* + * yaffs_bg_gc() + * Garbage collects. Intended to be called from a background thread. + * Returns non-zero if at least half the free chunks are erased. + */ +int yaffs_bg_gc(struct yaffs_dev *dev, unsigned urgency) +{ + int erased_chunks = dev->n_erased_blocks * dev->param.chunks_per_block; - return YAFFS_OK; + yaffs_trace(YAFFS_TRACE_BACKGROUND, "Background gc %u", urgency); + + yaffs_check_gc(dev, 1); + return erased_chunks > dev->n_free_chunks / 2; } -static int yaffs_rd_data_obj(yaffs_obj_t *in, int inode_chunk, - __u8 *buffer) +/*-------------------- Data file manipulation -----------------*/ + +static int yaffs_rd_data_obj(struct yaffs_obj *in, int inode_chunk, u8 * buffer) { int nand_chunk = yaffs_find_chunk_in_file(in, inode_chunk, NULL); @@ -2856,9 +2999,9 @@ static int yaffs_rd_data_obj(yaffs_obj_t *in, int inode_chunk, return yaffs_rd_chunk_tags_nand(in->my_dev, nand_chunk, buffer, NULL); else { - T(YAFFS_TRACE_NANDACCESS, - (TSTR("Chunk %d not found zero instead" TENDSTR), - nand_chunk)); + yaffs_trace(YAFFS_TRACE_NANDACCESS, + "Chunk %d not found zero instead", + nand_chunk); /* get sane (zero) data if you read a hole */ memset(buffer, 0, in->my_dev->data_bytes_per_chunk); return 0; @@ -2866,12 +3009,13 @@ static int yaffs_rd_data_obj(yaffs_obj_t *in, int inode_chunk, } -void yaffs_chunk_del(yaffs_dev_t *dev, int chunk_id, int mark_flash, int lyn) +void yaffs_chunk_del(struct yaffs_dev *dev, int chunk_id, int mark_flash, + int lyn) { int block; int page; - yaffs_ext_tags tags; - yaffs_block_info_t *bi; + struct yaffs_ext_tags tags; + struct yaffs_block_info *bi; if (chunk_id <= 0) return; @@ -2880,18 +3024,17 @@ void yaffs_chunk_del(yaffs_dev_t *dev, int chunk_id, int mark_flash, int lyn) block = chunk_id / dev->param.chunks_per_block; page = chunk_id % dev->param.chunks_per_block; - if (!yaffs_check_chunk_bit(dev, block, page)) - T(YAFFS_TRACE_VERIFY, - (TSTR("Deleting invalid chunk %d"TENDSTR), - chunk_id)); + yaffs_trace(YAFFS_TRACE_VERIFY, + "Deleting invalid chunk %d", chunk_id); bi = yaffs_get_block_info(dev, block); - + yaffs2_update_oldest_dirty_seq(dev, block, bi); - T(YAFFS_TRACE_DELETION, - (TSTR("line %d delete of chunk %d" TENDSTR), lyn, chunk_id)); + yaffs_trace(YAFFS_TRACE_DELETION, + "line %d delete of chunk %d", + lyn, chunk_id); if (!dev->param.is_yaffs2 && mark_flash && bi->block_state != YAFFS_BLOCK_STATE_COLLECTING) { @@ -2930,9 +3073,8 @@ void yaffs_chunk_del(yaffs_dev_t *dev, int chunk_id, int mark_flash, int lyn) } -static int yaffs_wr_data_obj(yaffs_obj_t *in, int inode_chunk, - const __u8 *buffer, int n_bytes, - int use_reserve) +static int yaffs_wr_data_obj(struct yaffs_obj *in, int inode_chunk, + const u8 * buffer, int n_bytes, int use_reserve) { /* Find old chunk Need to do this to get serial number * Write new one and patch into tree. @@ -2940,126 +3082,346 @@ static int yaffs_wr_data_obj(yaffs_obj_t *in, int inode_chunk, */ int prev_chunk_id; - yaffs_ext_tags prev_tags; + struct yaffs_ext_tags prev_tags; int new_chunk_id; - yaffs_ext_tags new_tags; + struct yaffs_ext_tags new_tags; - yaffs_dev_t *dev = in->my_dev; + struct yaffs_dev *dev = in->my_dev; - yaffs_check_gc(dev,0); + yaffs_check_gc(dev, 0); /* Get the previous chunk at this location in the file if it exists. * If it does not exist then put a zero into the tree. This creates * the tnode now, rather than later when it is harder to clean up. */ prev_chunk_id = yaffs_find_chunk_in_file(in, inode_chunk, &prev_tags); - if(prev_chunk_id < 1 && - !yaffs_put_chunk_in_file(in, inode_chunk, 0, 0)) + if (prev_chunk_id < 1 && + !yaffs_put_chunk_in_file(in, inode_chunk, 0, 0)) return 0; - /* Set up new tags */ - yaffs_init_tags(&new_tags); + /* Set up new tags */ + yaffs_init_tags(&new_tags); + + new_tags.chunk_id = inode_chunk; + new_tags.obj_id = in->obj_id; + new_tags.serial_number = + (prev_chunk_id > 0) ? prev_tags.serial_number + 1 : 1; + new_tags.n_bytes = n_bytes; + + if (n_bytes < 1 || n_bytes > dev->param.total_bytes_per_chunk) { + yaffs_trace(YAFFS_TRACE_ERROR, + "Writing %d bytes to chunk!!!!!!!!!", + n_bytes); + YBUG(); + } + + new_chunk_id = + yaffs_write_new_chunk(dev, buffer, &new_tags, use_reserve); + + if (new_chunk_id > 0) { + yaffs_put_chunk_in_file(in, inode_chunk, new_chunk_id, 0); + + if (prev_chunk_id > 0) + yaffs_chunk_del(dev, prev_chunk_id, 1, __LINE__); + + yaffs_verify_file_sane(in); + } + return new_chunk_id; + +} + + + +static int yaffs_do_xattrib_mod(struct yaffs_obj *obj, int set, + const YCHAR * name, const void *value, int size, + int flags) +{ + struct yaffs_xattr_mod xmod; + + int result; + + xmod.set = set; + xmod.name = name; + xmod.data = value; + xmod.size = size; + xmod.flags = flags; + xmod.result = -ENOSPC; + + result = yaffs_update_oh(obj, NULL, 0, 0, 0, &xmod); + + if (result > 0) + return xmod.result; + else + return -ENOSPC; +} + +static int yaffs_apply_xattrib_mod(struct yaffs_obj *obj, char *buffer, + struct yaffs_xattr_mod *xmod) +{ + int retval = 0; + int x_offs = sizeof(struct yaffs_obj_hdr); + struct yaffs_dev *dev = obj->my_dev; + int x_size = dev->data_bytes_per_chunk - sizeof(struct yaffs_obj_hdr); + + char *x_buffer = buffer + x_offs; + + if (xmod->set) + retval = + nval_set(x_buffer, x_size, xmod->name, xmod->data, + xmod->size, xmod->flags); + else + retval = nval_del(x_buffer, x_size, xmod->name); + + obj->has_xattr = nval_hasvalues(x_buffer, x_size); + obj->xattr_known = 1; + + xmod->result = retval; + + return retval; +} + +static int yaffs_do_xattrib_fetch(struct yaffs_obj *obj, const YCHAR * name, + void *value, int size) +{ + char *buffer = NULL; + int result; + struct yaffs_ext_tags tags; + struct yaffs_dev *dev = obj->my_dev; + int x_offs = sizeof(struct yaffs_obj_hdr); + int x_size = dev->data_bytes_per_chunk - sizeof(struct yaffs_obj_hdr); + + char *x_buffer; + + int retval = 0; + + if (obj->hdr_chunk < 1) + return -ENODATA; + + /* If we know that the object has no xattribs then don't do all the + * reading and parsing. + */ + if (obj->xattr_known && !obj->has_xattr) { + if (name) + return -ENODATA; + else + return 0; + } + + buffer = (char *)yaffs_get_temp_buffer(dev, __LINE__); + if (!buffer) + return -ENOMEM; + + result = + yaffs_rd_chunk_tags_nand(dev, obj->hdr_chunk, (u8 *) buffer, &tags); + + if (result != YAFFS_OK) + retval = -ENOENT; + else { + x_buffer = buffer + x_offs; + + if (!obj->xattr_known) { + obj->has_xattr = nval_hasvalues(x_buffer, x_size); + obj->xattr_known = 1; + } + + if (name) + retval = nval_get(x_buffer, x_size, name, value, size); + else + retval = nval_list(x_buffer, x_size, value, size); + } + yaffs_release_temp_buffer(dev, (u8 *) buffer, __LINE__); + return retval; +} + +int yaffs_set_xattrib(struct yaffs_obj *obj, const YCHAR * name, + const void *value, int size, int flags) +{ + return yaffs_do_xattrib_mod(obj, 1, name, value, size, flags); +} + +int yaffs_remove_xattrib(struct yaffs_obj *obj, const YCHAR * name) +{ + return yaffs_do_xattrib_mod(obj, 0, name, NULL, 0, 0); +} + +int yaffs_get_xattrib(struct yaffs_obj *obj, const YCHAR * name, void *value, + int size) +{ + return yaffs_do_xattrib_fetch(obj, name, value, size); +} + +int yaffs_list_xattrib(struct yaffs_obj *obj, char *buffer, int size) +{ + return yaffs_do_xattrib_fetch(obj, NULL, buffer, size); +} + +static void yaffs_check_obj_details_loaded(struct yaffs_obj *in) +{ + u8 *chunk_data; + struct yaffs_obj_hdr *oh; + struct yaffs_dev *dev; + struct yaffs_ext_tags tags; + int result; + int alloc_failed = 0; + + if (!in) + return; + + dev = in->my_dev; + + if (in->lazy_loaded && in->hdr_chunk > 0) { + in->lazy_loaded = 0; + chunk_data = yaffs_get_temp_buffer(dev, __LINE__); + + result = + yaffs_rd_chunk_tags_nand(dev, in->hdr_chunk, chunk_data, + &tags); + oh = (struct yaffs_obj_hdr *)chunk_data; + + in->yst_mode = oh->yst_mode; + yaffs_load_attribs(in, oh); + yaffs_set_obj_name_from_oh(in, oh); + + if (in->variant_type == YAFFS_OBJECT_TYPE_SYMLINK) { + in->variant.symlink_variant.alias = + yaffs_clone_str(oh->alias); + if (!in->variant.symlink_variant.alias) + alloc_failed = 1; /* Not returned to caller */ + } + + yaffs_release_temp_buffer(dev, chunk_data, __LINE__); + } +} + +static void yaffs_load_name_from_oh(struct yaffs_dev *dev, YCHAR * name, + const YCHAR * oh_name, int buff_size) +{ +#ifdef CONFIG_YAFFS_AUTO_UNICODE + if (dev->param.auto_unicode) { + if (*oh_name) { + /* It is an ASCII name, do an ASCII to + * unicode conversion */ + const char *ascii_oh_name = (const char *)oh_name; + int n = buff_size - 1; + while (n > 0 && *ascii_oh_name) { + *name = *ascii_oh_name; + name++; + ascii_oh_name++; + n--; + } + } else { + strncpy(name, oh_name + 1, buff_size - 1); + } + } else { +#else + { +#endif + strncpy(name, oh_name, buff_size - 1); + } +} + +static void yaffs_load_oh_from_name(struct yaffs_dev *dev, YCHAR * oh_name, + const YCHAR * name) +{ +#ifdef CONFIG_YAFFS_AUTO_UNICODE - new_tags.chunk_id = inode_chunk; - new_tags.obj_id = in->obj_id; - new_tags.serial_number = - (prev_chunk_id > 0) ? prev_tags.serial_number + 1 : 1; - new_tags.n_bytes = n_bytes; + int is_ascii; + YCHAR *w; - if (n_bytes < 1 || n_bytes > dev->param.total_bytes_per_chunk) { - T(YAFFS_TRACE_ERROR, - (TSTR("Writing %d bytes to chunk!!!!!!!!!" TENDSTR), n_bytes)); - YBUG(); - } - - - new_chunk_id = - yaffs_write_new_chunk(dev, buffer, &new_tags, - use_reserve); + if (dev->param.auto_unicode) { - if (new_chunk_id > 0) { - yaffs_put_chunk_in_file(in, inode_chunk, new_chunk_id, 0); + is_ascii = 1; + w = name; - if (prev_chunk_id > 0) - yaffs_chunk_del(dev, prev_chunk_id, 1, __LINE__); + /* Figure out if the name will fit in ascii character set */ + while (is_ascii && *w) { + if ((*w) & 0xff00) + is_ascii = 0; + w++; + } - yaffs_verify_file_sane(in); - } - return new_chunk_id; + if (is_ascii) { + /* It is an ASCII name, so do a unicode to ascii conversion */ + char *ascii_oh_name = (char *)oh_name; + int n = YAFFS_MAX_NAME_LENGTH - 1; + while (n > 0 && *name) { + *ascii_oh_name = *name; + name++; + ascii_oh_name++; + n--; + } + } else { + /* It is a unicode name, so save starting at the second YCHAR */ + *oh_name = 0; + strncpy(oh_name + 1, name, + YAFFS_MAX_NAME_LENGTH - 2); + } + } else { +#else + { +#endif + strncpy(oh_name, name, YAFFS_MAX_NAME_LENGTH - 1); + } } /* UpdateObjectHeader updates the header on NAND for an object. * If name is not NULL, then that new name is used. */ -int yaffs_update_oh(yaffs_obj_t *in, const YCHAR *name, int force, - int is_shrink, int shadows, yaffs_xattr_mod *xmod) +int yaffs_update_oh(struct yaffs_obj *in, const YCHAR * name, int force, + int is_shrink, int shadows, struct yaffs_xattr_mod *xmod) { - yaffs_block_info_t *bi; + struct yaffs_block_info *bi; - yaffs_dev_t *dev = in->my_dev; + struct yaffs_dev *dev = in->my_dev; int prev_chunk_id; int ret_val = 0; int result = 0; int new_chunk_id; - yaffs_ext_tags new_tags; - yaffs_ext_tags old_tags; + struct yaffs_ext_tags new_tags; + struct yaffs_ext_tags old_tags; const YCHAR *alias = NULL; - __u8 *buffer = NULL; + u8 *buffer = NULL; YCHAR old_name[YAFFS_MAX_NAME_LENGTH + 1]; - yaffs_obj_header *oh = NULL; + struct yaffs_obj_hdr *oh = NULL; - yaffs_strcpy(old_name, _Y("silly old name")); + strcpy(old_name, _Y("silly old name")); + if (!in->fake || in == dev->root_dir || + force || xmod) { - if (!in->fake || - in == dev->root_dir || /* The root_dir should also be saved */ - force || xmod) { - - yaffs_check_gc(dev,0); + yaffs_check_gc(dev, 0); yaffs_check_obj_details_loaded(in); buffer = yaffs_get_temp_buffer(in->my_dev, __LINE__); - oh = (yaffs_obj_header *) buffer; + oh = (struct yaffs_obj_hdr *)buffer; prev_chunk_id = in->hdr_chunk; if (prev_chunk_id > 0) { result = yaffs_rd_chunk_tags_nand(dev, prev_chunk_id, - buffer, &old_tags); + buffer, &old_tags); yaffs_verify_oh(in, oh, &old_tags, 0); memcpy(old_name, oh->name, sizeof(oh->name)); - memset(buffer, 0xFF, sizeof(yaffs_obj_header)); - } else + memset(buffer, 0xFF, sizeof(struct yaffs_obj_hdr)); + } else { memset(buffer, 0xFF, dev->data_bytes_per_chunk); + } oh->type = in->variant_type; oh->yst_mode = in->yst_mode; oh->shadows_obj = oh->inband_shadowed_obj_id = shadows; -#ifdef CONFIG_YAFFS_WINCE - oh->win_atime[0] = in->win_atime[0]; - oh->win_ctime[0] = in->win_ctime[0]; - oh->win_mtime[0] = in->win_mtime[0]; - oh->win_atime[1] = in->win_atime[1]; - oh->win_ctime[1] = in->win_ctime[1]; - oh->win_mtime[1] = in->win_mtime[1]; -#else - oh->yst_uid = in->yst_uid; - oh->yst_gid = in->yst_gid; - oh->yst_atime = in->yst_atime; - oh->yst_mtime = in->yst_mtime; - oh->yst_ctime = in->yst_ctime; - oh->yst_rdev = in->yst_rdev; -#endif + yaffs_load_attribs_oh(oh, in); + if (in->parent) oh->parent_obj_id = in->parent->obj_id; else @@ -3067,11 +3429,12 @@ int yaffs_update_oh(yaffs_obj_t *in, const YCHAR *name, int force, if (name && *name) { memset(oh->name, 0, sizeof(oh->name)); - yaffs_load_oh_from_name(dev,oh->name,name); - } else if (prev_chunk_id > 0) + yaffs_load_oh_from_name(dev, oh->name, name); + } else if (prev_chunk_id > 0) { memcpy(oh->name, old_name, sizeof(oh->name)); - else + } else { memset(oh->name, 0, sizeof(oh->name)); + } oh->is_shrink = is_shrink; @@ -3083,12 +3446,11 @@ int yaffs_update_oh(yaffs_obj_t *in, const YCHAR *name, int force, oh->file_size = (oh->parent_obj_id == YAFFS_OBJECTID_DELETED || oh->parent_obj_id == - YAFFS_OBJECTID_UNLINKED) ? 0 : in->variant. - file_variant.file_size; + YAFFS_OBJECTID_UNLINKED) ? 0 : in-> + variant.file_variant.file_size; break; case YAFFS_OBJECT_TYPE_HARDLINK: - oh->equiv_id = - in->variant.hardlink_variant.equiv_id; + oh->equiv_id = in->variant.hardlink_variant.equiv_id; break; case YAFFS_OBJECT_TYPE_SPECIAL: /* Do nothing */ @@ -3098,20 +3460,17 @@ int yaffs_update_oh(yaffs_obj_t *in, const YCHAR *name, int force, break; case YAFFS_OBJECT_TYPE_SYMLINK: alias = in->variant.symlink_variant.alias; - if(!alias) + if (!alias) alias = _Y("no alias"); - yaffs_strncpy(oh->alias, - alias, - YAFFS_MAX_ALIAS_LENGTH); + strncpy(oh->alias, alias, YAFFS_MAX_ALIAS_LENGTH); oh->alias[YAFFS_MAX_ALIAS_LENGTH] = 0; break; } /* process any xattrib modifications */ - if(xmod) + if (xmod) yaffs_apply_xattrib_mod(in, (char *)buffer, xmod); - /* Tags */ yaffs_init_tags(&new_tags); in->serial++; @@ -3134,7 +3493,7 @@ int yaffs_update_oh(yaffs_obj_t *in, const YCHAR *name, int force, /* Create new chunk in NAND */ new_chunk_id = yaffs_write_new_chunk(dev, buffer, &new_tags, - (prev_chunk_id > 0) ? 1 : 0); + (prev_chunk_id > 0) ? 1 : 0); if (new_chunk_id >= 0) { @@ -3142,288 +3501,33 @@ int yaffs_update_oh(yaffs_obj_t *in, const YCHAR *name, int force, if (prev_chunk_id > 0) { yaffs_chunk_del(dev, prev_chunk_id, 1, - __LINE__); + __LINE__); } if (!yaffs_obj_cache_dirty(in)) - in->dirty = 0; - - /* If this was a shrink, then mark the block that the chunk lives on */ - if (is_shrink) { - bi = yaffs_get_block_info(in->my_dev, - new_chunk_id / in->my_dev->param.chunks_per_block); - bi->has_shrink_hdr = 1; - } - - } - - ret_val = new_chunk_id; - - } - - if (buffer) - yaffs_release_temp_buffer(dev, buffer, __LINE__); - - return ret_val; -} - -/*------------------------ Short Operations Cache ---------------------------------------- - * In many situations where there is no high level buffering (eg WinCE) a lot of - * reads might be short sequential reads, and a lot of writes may be short - * sequential writes. eg. scanning/writing a jpeg file. - * In these cases, a short read/write cache can provide a huge perfomance benefit - * with dumb-as-a-rock code. - * In Linux, the page cache provides read buffering aand the short op cache provides write - * buffering. - * - * There are a limited number (~10) of cache chunks per device so that we don't - * need a very intelligent search. - */ - -static int yaffs_obj_cache_dirty(yaffs_obj_t *obj) -{ - yaffs_dev_t *dev = obj->my_dev; - int i; - yaffs_cache_t *cache; - int n_caches = obj->my_dev->param.n_caches; - - for (i = 0; i < n_caches; i++) { - cache = &dev->cache[i]; - if (cache->object == obj && - cache->dirty) - return 1; - } - - return 0; -} - - -static void yaffs_flush_file_cache(yaffs_obj_t *obj) -{ - yaffs_dev_t *dev = obj->my_dev; - int lowest = -99; /* Stop compiler whining. */ - int i; - yaffs_cache_t *cache; - int chunk_written = 0; - int n_caches = obj->my_dev->param.n_caches; - - if (n_caches > 0) { - do { - cache = NULL; - - /* Find the dirty cache for this object with the lowest chunk id. */ - for (i = 0; i < n_caches; i++) { - if (dev->cache[i].object == obj && - dev->cache[i].dirty) { - if (!cache - || dev->cache[i].chunk_id < - lowest) { - cache = &dev->cache[i]; - lowest = cache->chunk_id; - } - } - } - - if (cache && !cache->locked) { - /* Write it out and free it up */ - - chunk_written = - yaffs_wr_data_obj(cache->object, - cache->chunk_id, - cache->data, - cache->n_bytes, - 1); - cache->dirty = 0; - cache->object = NULL; - } - - } while (cache && chunk_written > 0); - - if (cache) { - /* Hoosterman, disk full while writing cache out. */ - T(YAFFS_TRACE_ERROR, - (TSTR("yaffs tragedy: no space during cache write" TENDSTR))); - - } - } - -} - -/*yaffs_flush_whole_cache(dev) - * - * - */ - -void yaffs_flush_whole_cache(yaffs_dev_t *dev) -{ - yaffs_obj_t *obj; - int n_caches = dev->param.n_caches; - int i; - - /* Find a dirty object in the cache and flush it... - * until there are no further dirty objects. - */ - do { - obj = NULL; - for (i = 0; i < n_caches && !obj; i++) { - if (dev->cache[i].object && - dev->cache[i].dirty) - obj = dev->cache[i].object; - - } - if (obj) - yaffs_flush_file_cache(obj); - - } while (obj); - -} - - -/* Grab us a cache chunk for use. - * First look for an empty one. - * Then look for the least recently used non-dirty one. - * Then look for the least recently used dirty one...., flush and look again. - */ -static yaffs_cache_t *yaffs_grab_chunk_worker(yaffs_dev_t *dev) -{ - int i; - - if (dev->param.n_caches > 0) { - for (i = 0; i < dev->param.n_caches; i++) { - if (!dev->cache[i].object) - return &dev->cache[i]; - } - } - - return NULL; -} - -static yaffs_cache_t *yaffs_grab_chunk_cache(yaffs_dev_t *dev) -{ - yaffs_cache_t *cache; - yaffs_obj_t *the_obj; - int usage; - int i; - int pushout; - - if (dev->param.n_caches > 0) { - /* Try find a non-dirty one... */ - - cache = yaffs_grab_chunk_worker(dev); - - if (!cache) { - /* They were all dirty, find the last recently used object and flush - * its cache, then find again. - * NB what's here is not very accurate, we actually flush the object - * the last recently used page. - */ - - /* With locking we can't assume we can use entry zero */ - - the_obj = NULL; - usage = -1; - cache = NULL; - pushout = -1; - - for (i = 0; i < dev->param.n_caches; i++) { - if (dev->cache[i].object && - !dev->cache[i].locked && - (dev->cache[i].last_use < usage || !cache)) { - usage = dev->cache[i].last_use; - the_obj = dev->cache[i].object; - cache = &dev->cache[i]; - pushout = i; - } - } - - if (!cache || cache->dirty) { - /* Flush and try again */ - yaffs_flush_file_cache(the_obj); - cache = yaffs_grab_chunk_worker(dev); - } - - } - return cache; - } else - return NULL; - -} - -/* Find a cached chunk */ -static yaffs_cache_t *yaffs_find_chunk_cache(const yaffs_obj_t *obj, - int chunk_id) -{ - yaffs_dev_t *dev = obj->my_dev; - int i; - if (dev->param.n_caches > 0) { - for (i = 0; i < dev->param.n_caches; i++) { - if (dev->cache[i].object == obj && - dev->cache[i].chunk_id == chunk_id) { - dev->cache_hits++; - - return &dev->cache[i]; - } - } - } - return NULL; -} - -/* Mark the chunk for the least recently used algorithym */ -static void yaffs_use_cache(yaffs_dev_t *dev, yaffs_cache_t *cache, - int is_write) -{ - - if (dev->param.n_caches > 0) { - if (dev->cache_last_use < 0 || dev->cache_last_use > 100000000) { - /* Reset the cache usages */ - int i; - for (i = 1; i < dev->param.n_caches; i++) - dev->cache[i].last_use = 0; - - dev->cache_last_use = 0; - } - - dev->cache_last_use++; + in->dirty = 0; - cache->last_use = dev->cache_last_use; + /* If this was a shrink, then mark the block that the chunk lives on */ + if (is_shrink) { + bi = yaffs_get_block_info(in->my_dev, + new_chunk_id / + in->my_dev->param. + chunks_per_block); + bi->has_shrink_hdr = 1; + } - if (is_write) - cache->dirty = 1; - } -} + } -/* Invalidate a single cache page. - * Do this when a whole page gets written, - * ie the short cache for this page is no longer valid. - */ -static void yaffs_invalidate_chunk_cache(yaffs_obj_t *object, int chunk_id) -{ - if (object->my_dev->param.n_caches > 0) { - yaffs_cache_t *cache = yaffs_find_chunk_cache(object, chunk_id); + ret_val = new_chunk_id; - if (cache) - cache->object = NULL; } -} -/* Invalidate all the cache pages associated with this object - * Do this whenever ther file is deleted or resized. - */ -static void yaffs_invalidate_whole_cache(yaffs_obj_t *in) -{ - int i; - yaffs_dev_t *dev = in->my_dev; + if (buffer) + yaffs_release_temp_buffer(dev, buffer, __LINE__); - if (dev->param.n_caches > 0) { - /* Invalidate it. */ - for (i = 0; i < dev->param.n_caches; i++) { - if (dev->cache[i].object == in) - dev->cache[i].object = NULL; - } - } + return ret_val; } - /*--------------------- File read/write ------------------------ * Read and write have very similar structures. * In general the read/write has three parts to it @@ -3434,18 +3538,17 @@ static void yaffs_invalidate_whole_cache(yaffs_obj_t *in) * Curve-balls: the first chunk might also be the last chunk. */ -int yaffs_file_rd(yaffs_obj_t *in, __u8 *buffer, loff_t offset, - int n_bytes) +int yaffs_file_rd(struct yaffs_obj *in, u8 * buffer, loff_t offset, int n_bytes) { int chunk; - __u32 start; + u32 start; int n_copy; int n = n_bytes; int n_done = 0; - yaffs_cache_t *cache; + struct yaffs_cache *cache; - yaffs_dev_t *dev; + struct yaffs_dev *dev; dev = in->my_dev; @@ -3469,20 +3572,21 @@ int yaffs_file_rd(yaffs_obj_t *in, __u8 *buffer, loff_t offset, * or we're using inband tags then use the cache (if there is caching) * else bypass the cache. */ - if (cache || n_copy != dev->data_bytes_per_chunk || dev->param.inband_tags) { + if (cache || n_copy != dev->data_bytes_per_chunk + || dev->param.inband_tags) { if (dev->param.n_caches > 0) { /* If we can't find the data in the cache, then load it up. */ if (!cache) { - cache = yaffs_grab_chunk_cache(in->my_dev); + cache = + yaffs_grab_chunk_cache(in->my_dev); cache->object = in; cache->chunk_id = chunk; cache->dirty = 0; cache->locked = 0; yaffs_rd_data_obj(in, chunk, - cache-> - data); + cache->data); cache->n_bytes = 0; } @@ -3490,23 +3594,20 @@ int yaffs_file_rd(yaffs_obj_t *in, __u8 *buffer, loff_t offset, cache->locked = 1; - memcpy(buffer, &cache->data[start], n_copy); cache->locked = 0; } else { - /* Read into the local buffer then copy..*/ + /* Read into the local buffer then copy.. */ - __u8 *local_buffer = + u8 *local_buffer = yaffs_get_temp_buffer(dev, __LINE__); - yaffs_rd_data_obj(in, chunk, - local_buffer); + yaffs_rd_data_obj(in, chunk, local_buffer); memcpy(buffer, &local_buffer[start], n_copy); - yaffs_release_temp_buffer(dev, local_buffer, - __LINE__); + __LINE__); } } else { @@ -3526,22 +3627,22 @@ int yaffs_file_rd(yaffs_obj_t *in, __u8 *buffer, loff_t offset, return n_done; } -int yaffs_do_file_wr(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, - int n_bytes, int write_trhrough) +int yaffs_do_file_wr(struct yaffs_obj *in, const u8 * buffer, loff_t offset, + int n_bytes, int write_trhrough) { int chunk; - __u32 start; + u32 start; int n_copy; int n = n_bytes; int n_done = 0; int n_writeback; int start_write = offset; int chunk_written = 0; - __u32 n_bytes_read; - __u32 chunk_start; + u32 n_bytes_read; + u32 chunk_start; - yaffs_dev_t *dev; + struct yaffs_dev *dev; dev = in->my_dev; @@ -3549,13 +3650,12 @@ int yaffs_do_file_wr(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, yaffs_addr_to_chunk(dev, offset, &chunk, &start); if (chunk * dev->data_bytes_per_chunk + start != offset || - start >= dev->data_bytes_per_chunk) { - T(YAFFS_TRACE_ERROR, ( - TSTR("AddrToChunk of offset %d gives chunk %d start %d" - TENDSTR), - (int)offset, chunk, start)); + start >= dev->data_bytes_per_chunk) { + yaffs_trace(YAFFS_TRACE_ERROR, + "AddrToChunk of offset %d gives chunk %d start %d", + (int)offset, chunk, start); } - chunk++; /* File pos to chunk in file offset */ + chunk++; /* File pos to chunk in file offset */ /* OK now check for the curveball where the start and end are in * the same chunk. @@ -3572,9 +3672,11 @@ int yaffs_do_file_wr(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, chunk_start = ((chunk - 1) * dev->data_bytes_per_chunk); if (chunk_start > in->variant.file_variant.file_size) - n_bytes_read = 0; /* Past end of file */ + n_bytes_read = 0; /* Past end of file */ else - n_bytes_read = in->variant.file_variant.file_size - chunk_start; + n_bytes_read = + in->variant.file_variant.file_size - + chunk_start; if (n_bytes_read > dev->data_bytes_per_chunk) n_bytes_read = dev->data_bytes_per_chunk; @@ -3583,7 +3685,8 @@ int yaffs_do_file_wr(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, (n_bytes_read > (start + n)) ? n_bytes_read : (start + n); - if (n_writeback < 0 || n_writeback > dev->data_bytes_per_chunk) + if (n_writeback < 0 + || n_writeback > dev->data_bytes_per_chunk) YBUG(); } else { @@ -3591,12 +3694,13 @@ int yaffs_do_file_wr(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, n_writeback = dev->data_bytes_per_chunk; } - if (n_copy != dev->data_bytes_per_chunk || dev->param.inband_tags) { + if (n_copy != dev->data_bytes_per_chunk + || dev->param.inband_tags) { /* An incomplete start or end chunk (or maybe both start and end chunk), * or we're using inband tags, so we want to use the cache buffers. */ if (dev->param.n_caches > 0) { - yaffs_cache_t *cache; + struct yaffs_cache *cache; /* If we can't find the data in the cache, then load the cache */ cache = yaffs_find_chunk_cache(in, chunk); @@ -3608,25 +3712,24 @@ int yaffs_do_file_wr(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, cache->dirty = 0; cache->locked = 0; yaffs_rd_data_obj(in, chunk, - cache->data); + cache->data); } else if (cache && - !cache->dirty && - !yaffs_check_alloc_available(dev, 1)) { + !cache->dirty && + !yaffs_check_alloc_available(dev, + 1)) { /* Drop the cache if it was a read cache item and * no space check has been made for it. */ - cache = NULL; + cache = NULL; } if (cache) { yaffs_use_cache(dev, cache, 1); cache->locked = 1; - memcpy(&cache->data[start], buffer, n_copy); - cache->locked = 0; cache->n_bytes = n_writeback; @@ -3635,8 +3738,8 @@ int yaffs_do_file_wr(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, yaffs_wr_data_obj (cache->object, cache->chunk_id, - cache->data, cache->n_bytes, - 1); + cache->data, + cache->n_bytes, 1); cache->dirty = 0; } @@ -3648,36 +3751,29 @@ int yaffs_do_file_wr(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, * Read into the local buffer then copy, then copy over and write back. */ - __u8 *local_buffer = + u8 *local_buffer = yaffs_get_temp_buffer(dev, __LINE__); - yaffs_rd_data_obj(in, chunk, - local_buffer); - - + yaffs_rd_data_obj(in, chunk, local_buffer); memcpy(&local_buffer[start], buffer, n_copy); chunk_written = yaffs_wr_data_obj(in, chunk, - local_buffer, - n_writeback, - 0); + local_buffer, + n_writeback, 0); yaffs_release_temp_buffer(dev, local_buffer, - __LINE__); + __LINE__); } } else { /* A full chunk. Write directly from the supplied buffer. */ - - chunk_written = yaffs_wr_data_obj(in, chunk, buffer, - dev->data_bytes_per_chunk, - 0); + dev->data_bytes_per_chunk, 0); /* Since we've overwritten the cached data, we better invalidate it. */ yaffs_invalidate_chunk_cache(in, chunk); @@ -3702,21 +3798,19 @@ int yaffs_do_file_wr(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, return n_done; } -int yaffs_wr_file(yaffs_obj_t *in, const __u8 *buffer, loff_t offset, - int n_bytes, int write_trhrough) +int yaffs_wr_file(struct yaffs_obj *in, const u8 * buffer, loff_t offset, + int n_bytes, int write_trhrough) { - yaffs2_handle_hole(in,offset); - return yaffs_do_file_wr(in,buffer,offset,n_bytes,write_trhrough); + yaffs2_handle_hole(in, offset); + return yaffs_do_file_wr(in, buffer, offset, n_bytes, write_trhrough); } - - /* ---------------------- File resizing stuff ------------------ */ -static void yaffs_prune_chunks(yaffs_obj_t *in, int new_size) +static void yaffs_prune_chunks(struct yaffs_obj *in, int new_size) { - yaffs_dev_t *dev = in->my_dev; + struct yaffs_dev *dev = in->my_dev; int old_size = in->variant.file_variant.file_size; int last_del = 1 + (old_size - 1) / dev->data_bytes_per_chunk; @@ -3738,13 +3832,14 @@ static void yaffs_prune_chunks(yaffs_obj_t *in, int new_size) chunk_id = yaffs_find_del_file_chunk(in, i, NULL); if (chunk_id > 0) { if (chunk_id < - (dev->internal_start_block * dev->param.chunks_per_block) + (dev->internal_start_block * + dev->param.chunks_per_block) || chunk_id >= ((dev->internal_end_block + 1) * dev->param.chunks_per_block)) { - T(YAFFS_TRACE_ALWAYS, - (TSTR("Found daft chunk_id %d for %d" TENDSTR), - chunk_id, i)); + yaffs_trace(YAFFS_TRACE_ALWAYS, + "Found daft chunk_id %d for %d", + chunk_id, i); } else { in->n_data_chunks--; yaffs_chunk_del(dev, chunk_id, 1, __LINE__); @@ -3754,12 +3849,11 @@ static void yaffs_prune_chunks(yaffs_obj_t *in, int new_size) } - -void yaffs_resize_file_down( yaffs_obj_t *obj, loff_t new_size) +void yaffs_resize_file_down(struct yaffs_obj *obj, loff_t new_size) { int new_full; - __u32 new_partial; - yaffs_dev_t *dev = obj->my_dev; + u32 new_partial; + struct yaffs_dev *dev = obj->my_dev; yaffs_addr_to_chunk(dev, new_size, &new_full, &new_partial); @@ -3767,15 +3861,15 @@ void yaffs_resize_file_down( yaffs_obj_t *obj, loff_t new_size) if (new_partial != 0) { int last_chunk = 1 + new_full; - __u8 *local_buffer = yaffs_get_temp_buffer(dev, __LINE__); + u8 *local_buffer = yaffs_get_temp_buffer(dev, __LINE__); - /* Got to read and rewrite the last chunk with its new size and zero pad */ + /* Rewrite the last chunk with its new size and zero pad */ yaffs_rd_data_obj(obj, last_chunk, local_buffer); memset(local_buffer + new_partial, 0, - dev->data_bytes_per_chunk - new_partial); + dev->data_bytes_per_chunk - new_partial); yaffs_wr_data_obj(obj, last_chunk, local_buffer, - new_partial, 1); + new_partial, 1); yaffs_release_temp_buffer(dev, local_buffer, __LINE__); } @@ -3785,30 +3879,29 @@ void yaffs_resize_file_down( yaffs_obj_t *obj, loff_t new_size) yaffs_prune_tree(dev, &obj->variant.file_variant); } - -int yaffs_resize_file(yaffs_obj_t *in, loff_t new_size) +int yaffs_resize_file(struct yaffs_obj *in, loff_t new_size) { - yaffs_dev_t *dev = in->my_dev; + struct yaffs_dev *dev = in->my_dev; int old_size = in->variant.file_variant.file_size; yaffs_flush_file_cache(in); yaffs_invalidate_whole_cache(in); - yaffs_check_gc(dev,0); + yaffs_check_gc(dev, 0); if (in->variant_type != YAFFS_OBJECT_TYPE_FILE) return YAFFS_FAIL; if (new_size == old_size) return YAFFS_OK; - - if(new_size > old_size){ - yaffs2_handle_hole(in,new_size); + + if (new_size > old_size) { + yaffs2_handle_hole(in, new_size); in->variant.file_variant.file_size = new_size; } else { - /* new_size < old_size */ + /* new_size < old_size */ yaffs_resize_file_down(in, new_size); - } + } /* Write a new object header to reflect the resize. * show we've shrunk the file, if need be @@ -3821,50 +3914,22 @@ int yaffs_resize_file(yaffs_obj_t *in, loff_t new_size) in->parent->obj_id != YAFFS_OBJECTID_DELETED) yaffs_update_oh(in, NULL, 0, 0, 0, NULL); - return YAFFS_OK; } -loff_t yaffs_get_file_size(yaffs_obj_t *obj) -{ - YCHAR *alias = NULL; - obj = yaffs_get_equivalent_obj(obj); - - switch (obj->variant_type) { - case YAFFS_OBJECT_TYPE_FILE: - return obj->variant.file_variant.file_size; - case YAFFS_OBJECT_TYPE_SYMLINK: - alias = obj->variant.symlink_variant.alias; - if(!alias) - return 0; - return yaffs_strnlen(alias,YAFFS_MAX_ALIAS_LENGTH); - default: - return 0; - } -} - - - -int yaffs_flush_file(yaffs_obj_t *in, int update_time, int data_sync) +int yaffs_flush_file(struct yaffs_obj *in, int update_time, int data_sync) { int ret_val; if (in->dirty) { yaffs_flush_file_cache(in); - if(data_sync) /* Only sync data */ - ret_val=YAFFS_OK; + if (data_sync) /* Only sync data */ + ret_val = YAFFS_OK; else { - if (update_time) { -#ifdef CONFIG_YAFFS_WINCE - yfsd_win_file_time_now(in->win_mtime); -#else - - in->yst_mtime = Y_CURRENT_TIME; - -#endif - } + if (update_time) + yaffs_load_current_time(in, 0, 0); ret_val = (yaffs_update_oh(in, NULL, 0, 0, 0, NULL) >= - 0) ? YAFFS_OK : YAFFS_FAIL; + 0) ? YAFFS_OK : YAFFS_FAIL; } } else { ret_val = YAFFS_OK; @@ -3874,37 +3939,17 @@ int yaffs_flush_file(yaffs_obj_t *in, int update_time, int data_sync) } -static int yaffs_generic_obj_del(yaffs_obj_t *in) -{ - - /* First off, invalidate the file's data in the cache, without flushing. */ - yaffs_invalidate_whole_cache(in); - - if (in->my_dev->param.is_yaffs2 && (in->parent != in->my_dev->del_dir)) { - /* Move to the unlinked directory so we have a record that it was deleted. */ - yaffs_change_obj_name(in, in->my_dev->del_dir, _Y("deleted"), 0, 0); - - } - - yaffs_remove_obj_from_dir(in); - yaffs_chunk_del(in->my_dev, in->hdr_chunk, 1, __LINE__); - in->hdr_chunk = 0; - - yaffs_free_obj(in); - return YAFFS_OK; - -} /* yaffs_del_file deletes the whole file data * and the inode associated with the file. * It does not delete the links associated with the file. */ -static int yaffs_unlink_file_if_needed(yaffs_obj_t *in) +static int yaffs_unlink_file_if_needed(struct yaffs_obj *in) { int ret_val; int del_now = 0; - yaffs_dev_t *dev = in->my_dev; + struct yaffs_dev *dev = in->my_dev; if (!in->my_inode) del_now = 1; @@ -3912,10 +3957,10 @@ static int yaffs_unlink_file_if_needed(yaffs_obj_t *in) if (del_now) { ret_val = yaffs_change_obj_name(in, in->my_dev->del_dir, - _Y("deleted"), 0, 0); - T(YAFFS_TRACE_TRACING, - (TSTR("yaffs: immediate deletion of file %d" TENDSTR), - in->obj_id)); + _Y("deleted"), 0, 0); + yaffs_trace(YAFFS_TRACE_TRACING, + "yaffs: immediate deletion of file %d", + in->obj_id); in->deleted = 1; in->my_dev->n_deleted_files++; if (dev->param.disable_soft_del || dev->param.is_yaffs2) @@ -3924,18 +3969,17 @@ static int yaffs_unlink_file_if_needed(yaffs_obj_t *in) } else { ret_val = yaffs_change_obj_name(in, in->my_dev->unlinked_dir, - _Y("unlinked"), 0, 0); + _Y("unlinked"), 0, 0); } - return ret_val; } -int yaffs_del_file(yaffs_obj_t *in) +int yaffs_del_file(struct yaffs_obj *in) { int ret_val = YAFFS_OK; - int deleted; /* Need to cache value on stack if in is freed */ - yaffs_dev_t *dev = in->my_dev; + int deleted; /* Need to cache value on stack if in is freed */ + struct yaffs_dev *dev = in->my_dev; if (dev->param.disable_soft_del || dev->param.is_yaffs2) yaffs_resize_file(in, 0); @@ -3966,13 +4010,14 @@ int yaffs_del_file(yaffs_obj_t *in) } } -static int yaffs_is_non_empty_dir(yaffs_obj_t *obj) +int yaffs_is_non_empty_dir(struct yaffs_obj *obj) { - return (obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) && - !(ylist_empty(&obj->variant.dir_variant.children)); + return (obj && + obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) && + !(list_empty(&obj->variant.dir_variant.children)); } -static int yaffs_del_dir(yaffs_obj_t *obj) +static int yaffs_del_dir(struct yaffs_obj *obj) { /* First check that the directory is empty. */ if (yaffs_is_non_empty_dir(obj)) @@ -3981,35 +4026,37 @@ static int yaffs_del_dir(yaffs_obj_t *obj) return yaffs_generic_obj_del(obj); } -static int yaffs_del_symlink(yaffs_obj_t *in) +static int yaffs_del_symlink(struct yaffs_obj *in) { - if(in->variant.symlink_variant.alias) - YFREE(in->variant.symlink_variant.alias); - in->variant.symlink_variant.alias=NULL; + if (in->variant.symlink_variant.alias) + kfree(in->variant.symlink_variant.alias); + in->variant.symlink_variant.alias = NULL; return yaffs_generic_obj_del(in); } -static int yaffs_del_link(yaffs_obj_t *in) +static int yaffs_del_link(struct yaffs_obj *in) { /* remove this hardlink from the list assocaited with the equivalent * object */ - ylist_del_init(&in->hard_links); + list_del_init(&in->hard_links); return yaffs_generic_obj_del(in); } -int yaffs_del_obj(yaffs_obj_t *obj) +int yaffs_del_obj(struct yaffs_obj *obj) { -int ret_val = -1; + int ret_val = -1; switch (obj->variant_type) { case YAFFS_OBJECT_TYPE_FILE: ret_val = yaffs_del_file(obj); break; case YAFFS_OBJECT_TYPE_DIRECTORY: - if(!ylist_empty(&obj->variant.dir_variant.dirty)){ - T(YAFFS_TRACE_BACKGROUND, (TSTR("Remove object %d from dirty directories" TENDSTR),obj->obj_id)); - ylist_del_init(&obj->variant.dir_variant.dirty); + if (!list_empty(&obj->variant.dir_variant.dirty)) { + yaffs_trace(YAFFS_TRACE_BACKGROUND, + "Remove object %d from dirty directories", + obj->obj_id); + list_del_init(&obj->variant.dir_variant.dirty); } return yaffs_del_dir(obj); break; @@ -4030,7 +4077,7 @@ int ret_val = -1; return ret_val; } -static int yaffs_unlink_worker(yaffs_obj_t *obj) +static int yaffs_unlink_worker(struct yaffs_obj *obj) { int del_now = 0; @@ -4038,12 +4085,12 @@ static int yaffs_unlink_worker(yaffs_obj_t *obj) if (!obj->my_inode) del_now = 1; - if(obj) + if (obj) yaffs_update_parent(obj->parent); if (obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) { return yaffs_del_link(obj); - } else if (!ylist_empty(&obj->hard_links)) { + } else if (!list_empty(&obj->hard_links)) { /* Curve ball: We're unlinking an object that has a hardlink. * * This problem arises because we are not strictly following @@ -4058,21 +4105,22 @@ static int yaffs_unlink_worker(yaffs_obj_t *obj) * - Delete the hardlink */ - yaffs_obj_t *hl; - yaffs_obj_t *parent; + struct yaffs_obj *hl; + struct yaffs_obj *parent; int ret_val; YCHAR name[YAFFS_MAX_NAME_LENGTH + 1]; - hl = ylist_entry(obj->hard_links.next, yaffs_obj_t, hard_links); + hl = list_entry(obj->hard_links.next, struct yaffs_obj, + hard_links); yaffs_get_obj_name(hl, name, YAFFS_MAX_NAME_LENGTH + 1); parent = hl->parent; - ylist_del_init(&hl->hard_links); + list_del_init(&hl->hard_links); - yaffs_add_obj_to_dir(obj->my_dev->unlinked_dir, hl); + yaffs_add_obj_to_dir(obj->my_dev->unlinked_dir, hl); - ret_val = yaffs_change_obj_name(obj,parent, name, 0, 0); + ret_val = yaffs_change_obj_name(obj, parent, name, 0, 0); if (ret_val == YAFFS_OK) ret_val = yaffs_generic_obj_del(hl); @@ -4085,7 +4133,7 @@ static int yaffs_unlink_worker(yaffs_obj_t *obj) return yaffs_del_file(obj); break; case YAFFS_OBJECT_TYPE_DIRECTORY: - ylist_del_init(&obj->variant.dir_variant.dirty); + list_del_init(&obj->variant.dir_variant.dirty); return yaffs_del_dir(obj); break; case YAFFS_OBJECT_TYPE_SYMLINK: @@ -4099,15 +4147,15 @@ static int yaffs_unlink_worker(yaffs_obj_t *obj) default: return YAFFS_FAIL; } - } else if(yaffs_is_non_empty_dir(obj)) + } else if (yaffs_is_non_empty_dir(obj)) { return YAFFS_FAIL; - else + } else { return yaffs_change_obj_name(obj, obj->my_dev->unlinked_dir, - _Y("unlinked"), 0, 0); + _Y("unlinked"), 0, 0); + } } - -static int yaffs_unlink_obj(yaffs_obj_t *obj) +static int yaffs_unlink_obj(struct yaffs_obj *obj) { if (obj && obj->unlink_allowed) @@ -4116,20 +4164,97 @@ static int yaffs_unlink_obj(yaffs_obj_t *obj) return YAFFS_FAIL; } -int yaffs_unlinker(yaffs_obj_t *dir, const YCHAR *name) + +int yaffs_unlinker(struct yaffs_obj *dir, const YCHAR * name) { - yaffs_obj_t *obj; + struct yaffs_obj *obj; obj = yaffs_find_by_name(dir, name); return yaffs_unlink_obj(obj); } +/* Note: + * If old_name is NULL then we take old_dir as the object to be renamed. + */ +int yaffs_rename_obj(struct yaffs_obj *old_dir, const YCHAR * old_name, + struct yaffs_obj *new_dir, const YCHAR * new_name) +{ + struct yaffs_obj *obj = NULL; + struct yaffs_obj *existing_target = NULL; + int force = 0; + int result; + struct yaffs_dev *dev; + + if (!old_dir || old_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) + YBUG(); + if (!new_dir || new_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) + YBUG(); + + dev = old_dir->my_dev; + +#ifdef CONFIG_YAFFS_CASE_INSENSITIVE + /* Special case for case insemsitive systems. + * While look-up is case insensitive, the name isn't. + * Therefore we might want to change x.txt to X.txt + */ + if (old_dir == new_dir && + old_name && new_name && + strcmp(old_name, new_name) == 0) + force = 1; +#endif + + if (strnlen(new_name, YAFFS_MAX_NAME_LENGTH + 1) > + YAFFS_MAX_NAME_LENGTH) + /* ENAMETOOLONG */ + return YAFFS_FAIL; + + if(old_name) + obj = yaffs_find_by_name(old_dir, old_name); + else{ + obj = old_dir; + old_dir = obj->parent; + } + + + if (obj && obj->rename_allowed) { + + /* Now do the handling for an existing target, if there is one */ + + existing_target = yaffs_find_by_name(new_dir, new_name); + if (yaffs_is_non_empty_dir(existing_target)){ + return YAFFS_FAIL; /* ENOTEMPTY */ + } else if (existing_target && existing_target != obj) { + /* Nuke the target first, using shadowing, + * but only if it isn't the same object. + * + * Note we must disable gc otherwise it can mess up the shadowing. + * + */ + dev->gc_disable = 1; + yaffs_change_obj_name(obj, new_dir, new_name, force, + existing_target->obj_id); + existing_target->is_shadowed = 1; + yaffs_unlink_obj(existing_target); + dev->gc_disable = 0; + } + + result = yaffs_change_obj_name(obj, new_dir, new_name, 1, 0); + + yaffs_update_parent(old_dir); + if (new_dir != old_dir) + yaffs_update_parent(new_dir); + + return result; + } + return YAFFS_FAIL; +} + /*----------------------- Initialisation Scanning ---------------------- */ -void yaffs_handle_shadowed_obj(yaffs_dev_t *dev, int obj_id, - int backward_scanning) +void yaffs_handle_shadowed_obj(struct yaffs_dev *dev, int obj_id, + int backward_scanning) { - yaffs_obj_t *obj; + struct yaffs_obj *obj; if (!backward_scanning) { /* Handle YAFFS1 forward scanning case @@ -4141,7 +4266,7 @@ void yaffs_handle_shadowed_obj(yaffs_dev_t *dev, int obj_id, * If the shadowed object exists then ignore. */ obj = yaffs_find_by_number(dev, obj_id); - if(obj) + if (obj) return; } @@ -4149,8 +4274,7 @@ void yaffs_handle_shadowed_obj(yaffs_dev_t *dev, int obj_id, * We put it in unlinked dir to be cleaned up after the scanning */ obj = - yaffs_find_or_create_by_number(dev, obj_id, - YAFFS_OBJECT_TYPE_FILE); + yaffs_find_or_create_by_number(dev, obj_id, YAFFS_OBJECT_TYPE_FILE); if (!obj) return; obj->is_shadowed = 1; @@ -4160,61 +4284,58 @@ void yaffs_handle_shadowed_obj(yaffs_dev_t *dev, int obj_id, } - -void yaffs_link_fixup(yaffs_dev_t *dev, yaffs_obj_t *hard_list) +void yaffs_link_fixup(struct yaffs_dev *dev, struct yaffs_obj *hard_list) { - yaffs_obj_t *hl; - yaffs_obj_t *in; + struct yaffs_obj *hl; + struct yaffs_obj *in; while (hard_list) { hl = hard_list; - hard_list = (yaffs_obj_t *) (hard_list->hard_links.next); + hard_list = (struct yaffs_obj *)(hard_list->hard_links.next); in = yaffs_find_by_number(dev, - hl->variant.hardlink_variant. - equiv_id); + hl->variant. + hardlink_variant.equiv_id); if (in) { /* Add the hardlink pointers */ hl->variant.hardlink_variant.equiv_obj = in; - ylist_add(&hl->hard_links, &in->hard_links); + list_add(&hl->hard_links, &in->hard_links); } else { /* Todo Need to report/handle this better. * Got a problem... hardlink to a non-existant object */ hl->variant.hardlink_variant.equiv_obj = NULL; - YINIT_LIST_HEAD(&hl->hard_links); + INIT_LIST_HEAD(&hl->hard_links); } } } - -static void yaffs_strip_deleted_objs(yaffs_dev_t *dev) +static void yaffs_strip_deleted_objs(struct yaffs_dev *dev) { /* - * Sort out state of unlinked and deleted objects after scanning. - */ - struct ylist_head *i; - struct ylist_head *n; - yaffs_obj_t *l; + * Sort out state of unlinked and deleted objects after scanning. + */ + struct list_head *i; + struct list_head *n; + struct yaffs_obj *l; if (dev->read_only) return; /* Soft delete all the unlinked files */ - ylist_for_each_safe(i, n, - &dev->unlinked_dir->variant.dir_variant.children) { + list_for_each_safe(i, n, + &dev->unlinked_dir->variant.dir_variant.children) { if (i) { - l = ylist_entry(i, yaffs_obj_t, siblings); + l = list_entry(i, struct yaffs_obj, siblings); yaffs_del_obj(l); } } - ylist_for_each_safe(i, n, - &dev->del_dir->variant.dir_variant.children) { + list_for_each_safe(i, n, &dev->del_dir->variant.dir_variant.children) { if (i) { - l = ylist_entry(i, yaffs_obj_t, siblings); + l = list_entry(i, struct yaffs_obj, siblings); yaffs_del_obj(l); } } @@ -4237,21 +4358,20 @@ static void yaffs_strip_deleted_objs(yaffs_dev_t *dev) * This fixes the problem where directories might have inadvertently been deleted * leaving the object "hanging" without being rooted in the directory tree. */ - -static int yaffs_has_null_parent(yaffs_dev_t *dev, yaffs_obj_t *obj) + +static int yaffs_has_null_parent(struct yaffs_dev *dev, struct yaffs_obj *obj) { return (obj == dev->del_dir || - obj == dev->unlinked_dir|| - obj == dev->root_dir); + obj == dev->unlinked_dir || obj == dev->root_dir); } -static void yaffs_fix_hanging_objs(yaffs_dev_t *dev) +static void yaffs_fix_hanging_objs(struct yaffs_dev *dev) { - yaffs_obj_t *obj; - yaffs_obj_t *parent; + struct yaffs_obj *obj; + struct yaffs_obj *parent; int i; - struct ylist_head *lh; - struct ylist_head *n; + struct list_head *lh; + struct list_head *n; int depth_limit; int hanging; @@ -4263,305 +4383,121 @@ static void yaffs_fix_hanging_objs(yaffs_dev_t *dev) * Make sure it is rooted. */ - for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { - ylist_for_each_safe(lh, n, &dev->obj_bucket[i].list) { + for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { + list_for_each_safe(lh, n, &dev->obj_bucket[i].list) { if (lh) { - obj = ylist_entry(lh, yaffs_obj_t, hash_link); - parent= obj->parent; - - if(yaffs_has_null_parent(dev,obj)){ + obj = + list_entry(lh, struct yaffs_obj, hash_link); + parent = obj->parent; + + if (yaffs_has_null_parent(dev, obj)) { /* These directories are not hanging */ hanging = 0; - } - else if(!parent || parent->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) + } else if (!parent + || parent->variant_type != + YAFFS_OBJECT_TYPE_DIRECTORY) { hanging = 1; - else if(yaffs_has_null_parent(dev,parent)) + } else if (yaffs_has_null_parent(dev, parent)) { hanging = 0; - else { + } else { /* * Need to follow the parent chain to see if it is hanging. */ hanging = 0; - depth_limit=100; - - while(parent != dev->root_dir && - parent->parent && - parent->parent->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY && - depth_limit > 0){ - parent = parent->parent; - depth_limit--; - } - if(parent != dev->root_dir) - hanging = 1; - } - if(hanging){ - T(YAFFS_TRACE_SCAN, - (TSTR("Hanging object %d moved to lost and found" TENDSTR), - obj->obj_id)); - yaffs_add_obj_to_dir(dev->lost_n_found,obj); - } - } - } - } -} - - -/* - * Delete directory contents for cleaning up lost and found. - */ -static void yaffs_del_dir_contents(yaffs_obj_t *dir) -{ - yaffs_obj_t *obj; - struct ylist_head *lh; - struct ylist_head *n; - - if(dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) - YBUG(); - - ylist_for_each_safe(lh, n, &dir->variant.dir_variant.children) { - if (lh) { - obj = ylist_entry(lh, yaffs_obj_t, siblings); - if(obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) - yaffs_del_dir_contents(obj); - - T(YAFFS_TRACE_SCAN, - (TSTR("Deleting lost_found object %d" TENDSTR), - obj->obj_id)); - - /* Need to use UnlinkObject since Delete would not handle - * hardlinked objects correctly. - */ - yaffs_unlink_obj(obj); - } - } - -} - -static void yaffs_empty_l_n_f(yaffs_dev_t *dev) -{ - yaffs_del_dir_contents(dev->lost_n_found); -} - -static void yaffs_check_obj_details_loaded(yaffs_obj_t *in) -{ - __u8 *chunk_data; - yaffs_obj_header *oh; - yaffs_dev_t *dev; - yaffs_ext_tags tags; - int result; - int alloc_failed = 0; - - if (!in) - return; - - dev = in->my_dev; - -#if 0 - T(YAFFS_TRACE_SCAN, (TSTR("details for object %d %s loaded" TENDSTR), - in->obj_id, - in->lazy_loaded ? "not yet" : "already")); -#endif - - if (in->lazy_loaded && in->hdr_chunk > 0) { - in->lazy_loaded = 0; - chunk_data = yaffs_get_temp_buffer(dev, __LINE__); - - result = yaffs_rd_chunk_tags_nand(dev, in->hdr_chunk, chunk_data, &tags); - oh = (yaffs_obj_header *) chunk_data; - - in->yst_mode = oh->yst_mode; -#ifdef CONFIG_YAFFS_WINCE - in->win_atime[0] = oh->win_atime[0]; - in->win_ctime[0] = oh->win_ctime[0]; - in->win_mtime[0] = oh->win_mtime[0]; - in->win_atime[1] = oh->win_atime[1]; - in->win_ctime[1] = oh->win_ctime[1]; - in->win_mtime[1] = oh->win_mtime[1]; -#else - in->yst_uid = oh->yst_uid; - in->yst_gid = oh->yst_gid; - in->yst_atime = oh->yst_atime; - in->yst_mtime = oh->yst_mtime; - in->yst_ctime = oh->yst_ctime; - in->yst_rdev = oh->yst_rdev; - -#endif - yaffs_set_obj_name_from_oh(in, oh); - - if (in->variant_type == YAFFS_OBJECT_TYPE_SYMLINK) { - in->variant.symlink_variant.alias = - yaffs_clone_str(oh->alias); - if (!in->variant.symlink_variant.alias) - alloc_failed = 1; /* Not returned to caller */ - } - - yaffs_release_temp_buffer(dev, chunk_data, __LINE__); - } -} - -/*------------------------------ Directory Functions ----------------------------- */ - -/* - *yaffs_update_parent() handles fixing a directories mtime and ctime when a new - * link (ie. name) is created or deleted in the directory. - * - * ie. - * create dir/a : update dir's mtime/ctime - * rm dir/a: update dir's mtime/ctime - * modify dir/a: don't update dir's mtimme/ctime - * - * This can be handled immediately or defered. Defering helps reduce the number - * of updates when many files in a directory are changed within a brief period. - * - * If the directory updating is defered then yaffs_update_dirty_dirs must be - * called periodically. - */ - -static void yaffs_update_parent(yaffs_obj_t *obj) -{ - yaffs_dev_t *dev; - if(!obj) - return; -#ifndef CONFIG_YAFFS_WINCE - - dev = obj->my_dev; - obj->dirty = 1; - obj->yst_mtime = obj->yst_ctime = Y_CURRENT_TIME; - if(dev->param.defered_dir_update){ - struct ylist_head *link = &obj->variant.dir_variant.dirty; - - if(ylist_empty(link)){ - ylist_add(link,&dev->dirty_dirs); - T(YAFFS_TRACE_BACKGROUND, (TSTR("Added object %d to dirty directories" TENDSTR),obj->obj_id)); - } - - } else - yaffs_update_oh(obj, NULL, 0, 0, 0, NULL); -#endif -} - -void yaffs_update_dirty_dirs(yaffs_dev_t *dev) -{ - struct ylist_head *link; - yaffs_obj_t *obj; - yaffs_dir_s *d_s; - yaffs_obj_variant *o_v; - - T(YAFFS_TRACE_BACKGROUND, (TSTR("Update dirty directories" TENDSTR))); - - while(!ylist_empty(&dev->dirty_dirs)){ - link = dev->dirty_dirs.next; - ylist_del_init(link); - - d_s=ylist_entry(link,yaffs_dir_s,dirty); - o_v = ylist_entry(d_s,yaffs_obj_variant,dir_variant); - obj = ylist_entry(o_v,yaffs_obj_t,variant); - - T(YAFFS_TRACE_BACKGROUND, (TSTR("Update directory %d" TENDSTR), obj->obj_id)); + depth_limit = 100; - if(obj->dirty) - yaffs_update_oh(obj, NULL, 0, 0, 0, NULL); + while (parent != dev->root_dir && + parent->parent && + parent->parent->variant_type == + YAFFS_OBJECT_TYPE_DIRECTORY + && depth_limit > 0) { + parent = parent->parent; + depth_limit--; + } + if (parent != dev->root_dir) + hanging = 1; + } + if (hanging) { + yaffs_trace(YAFFS_TRACE_SCAN, + "Hanging object %d moved to lost and found", + obj->obj_id); + yaffs_add_obj_to_dir(dev->lost_n_found, + obj); + } + } + } } } -static void yaffs_remove_obj_from_dir(yaffs_obj_t *obj) +/* + * Delete directory contents for cleaning up lost and found. + */ +static void yaffs_del_dir_contents(struct yaffs_obj *dir) { - yaffs_dev_t *dev = obj->my_dev; - yaffs_obj_t *parent; + struct yaffs_obj *obj; + struct list_head *lh; + struct list_head *n; - yaffs_verify_obj_in_dir(obj); - parent = obj->parent; + if (dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) + YBUG(); - yaffs_verify_dir(parent); + list_for_each_safe(lh, n, &dir->variant.dir_variant.children) { + if (lh) { + obj = list_entry(lh, struct yaffs_obj, siblings); + if (obj->variant_type == YAFFS_OBJECT_TYPE_DIRECTORY) + yaffs_del_dir_contents(obj); - if (dev && dev->param.remove_obj_fn) - dev->param.remove_obj_fn(obj); + yaffs_trace(YAFFS_TRACE_SCAN, + "Deleting lost_found object %d", + obj->obj_id); + /* Need to use UnlinkObject since Delete would not handle + * hardlinked objects correctly. + */ + yaffs_unlink_obj(obj); + } + } - ylist_del_init(&obj->siblings); - obj->parent = NULL; - - yaffs_verify_dir(parent); } -void yaffs_add_obj_to_dir(yaffs_obj_t *directory, - yaffs_obj_t *obj) +static void yaffs_empty_l_n_f(struct yaffs_dev *dev) { - if (!directory) { - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("tragedy: Trying to add an object to a null pointer directory" - TENDSTR))); - YBUG(); - return; - } - if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("tragedy: Trying to add an object to a non-directory" - TENDSTR))); - YBUG(); - } - - if (obj->siblings.prev == NULL) { - /* Not initialised */ - YBUG(); - } - - - yaffs_verify_dir(directory); - - yaffs_remove_obj_from_dir(obj); - - - /* Now add it */ - ylist_add(&obj->siblings, &directory->variant.dir_variant.children); - obj->parent = directory; - - if (directory == obj->my_dev->unlinked_dir - || directory == obj->my_dev->del_dir) { - obj->unlinked = 1; - obj->my_dev->n_unlinked_files++; - obj->rename_allowed = 0; - } - - yaffs_verify_dir(directory); - yaffs_verify_obj_in_dir(obj); + yaffs_del_dir_contents(dev->lost_n_found); } -yaffs_obj_t *yaffs_find_by_name(yaffs_obj_t *directory, - const YCHAR *name) + +struct yaffs_obj *yaffs_find_by_name(struct yaffs_obj *directory, + const YCHAR * name) { int sum; - struct ylist_head *i; + struct list_head *i; YCHAR buffer[YAFFS_MAX_NAME_LENGTH + 1]; - yaffs_obj_t *l; + struct yaffs_obj *l; if (!name) return NULL; if (!directory) { - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("tragedy: yaffs_find_by_name: null pointer directory" - TENDSTR))); + yaffs_trace(YAFFS_TRACE_ALWAYS, + "tragedy: yaffs_find_by_name: null pointer directory" + ); YBUG(); return NULL; } if (directory->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("tragedy: yaffs_find_by_name: non-directory" TENDSTR))); + yaffs_trace(YAFFS_TRACE_ALWAYS, + "tragedy: yaffs_find_by_name: non-directory" + ); YBUG(); } sum = yaffs_calc_name_sum(name); - ylist_for_each(i, &directory->variant.dir_variant.children) { + list_for_each(i, &directory->variant.dir_variant.children) { if (i) { - l = ylist_entry(i, yaffs_obj_t, siblings); + l = list_entry(i, struct yaffs_obj, siblings); if (l->parent != directory) YBUG(); @@ -4570,15 +4506,17 @@ yaffs_obj_t *yaffs_find_by_name(yaffs_obj_t *directory, /* Special case for lost-n-found */ if (l->obj_id == YAFFS_OBJECTID_LOSTNFOUND) { - if (yaffs_strcmp(name, YAFFS_LOSTNFOUND_NAME) == 0) + if (!strcmp(name, YAFFS_LOSTNFOUND_NAME)) return l; - } else if (yaffs_sum_cmp(l->sum, sum) || l->hdr_chunk <= 0) { + } else if (l->sum == sum + || l->hdr_chunk <= 0) { /* LostnFound chunk called Objxxx * Do a real check */ yaffs_get_obj_name(l, buffer, - YAFFS_MAX_NAME_LENGTH + 1); - if (yaffs_strncmp(name, buffer, YAFFS_MAX_NAME_LENGTH) == 0) + YAFFS_MAX_NAME_LENGTH + 1); + if (strncmp + (name, buffer, YAFFS_MAX_NAME_LENGTH) == 0) return l; } } @@ -4587,48 +4525,11 @@ yaffs_obj_t *yaffs_find_by_name(yaffs_obj_t *directory, return NULL; } - -#if 0 -int yaffs_ApplyToDirectoryChildren(yaffs_obj_t *the_dir, - int (*fn) (yaffs_obj_t *)) -{ - struct ylist_head *i; - yaffs_obj_t *l; - - if (!the_dir) { - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("tragedy: yaffs_find_by_name: null pointer directory" - TENDSTR))); - YBUG(); - return YAFFS_FAIL; - } - if (the_dir->variant_type != YAFFS_OBJECT_TYPE_DIRECTORY) { - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("tragedy: yaffs_find_by_name: non-directory" TENDSTR))); - YBUG(); - return YAFFS_FAIL; - } - - ylist_for_each(i, &the_dir->variant.dir_variant.children) { - if (i) { - l = ylist_entry(i, yaffs_obj_t, siblings); - if (l && !fn(l)) - return YAFFS_FAIL; - } - } - - return YAFFS_OK; - -} -#endif - /* GetEquivalentObject dereferences any hard links to get to the * actual object. */ -yaffs_obj_t *yaffs_get_equivalent_obj(yaffs_obj_t *obj) +struct yaffs_obj *yaffs_get_equivalent_obj(struct yaffs_obj *obj) { if (obj && obj->variant_type == YAFFS_OBJECT_TYPE_HARDLINK) { /* We want the object id of the equivalent object, not this one */ @@ -4657,167 +4558,106 @@ yaffs_obj_t *yaffs_get_equivalent_obj(yaffs_obj_t *obj) * starting at oh->name[1]. */ -static void yaffs_fix_null_name(yaffs_obj_t * obj,YCHAR * name, int buffer_size) +static void yaffs_fix_null_name(struct yaffs_obj *obj, YCHAR * name, + int buffer_size) { /* Create an object name if we could not find one. */ - if(yaffs_strnlen(name,YAFFS_MAX_NAME_LENGTH) == 0){ + if (strnlen(name, YAFFS_MAX_NAME_LENGTH) == 0) { YCHAR local_name[20]; YCHAR num_string[20]; YCHAR *x = &num_string[19]; unsigned v = obj->obj_id; num_string[19] = 0; - while(v>0){ + while (v > 0) { x--; *x = '0' + (v % 10); v /= 10; } /* make up a name */ - yaffs_strcpy(local_name, YAFFS_LOSTNFOUND_PREFIX); - yaffs_strcat(local_name,x); - yaffs_strncpy(name, local_name, buffer_size - 1); - } -} - -static void yaffs_load_name_from_oh(yaffs_dev_t *dev,YCHAR *name, const YCHAR *oh_name, int buff_size) -{ -#ifdef CONFIG_YAFFS_AUTO_UNICODE - if(dev->param.auto_unicode){ - if(*oh_name){ - /* It is an ASCII name, so do an ASCII to unicode conversion */ - const char *ascii_oh_name = (const char *)oh_name; - int n = buff_size - 1; - while(n > 0 && *ascii_oh_name){ - *name = *ascii_oh_name; - name++; - ascii_oh_name++; - n--; - } - } else - yaffs_strncpy(name,oh_name+1, buff_size -1); - } else -#endif - yaffs_strncpy(name, oh_name, buff_size - 1); -} - - -static void yaffs_load_oh_from_name(yaffs_dev_t *dev, YCHAR *oh_name, const YCHAR *name) -{ -#ifdef CONFIG_YAFFS_AUTO_UNICODE - - int is_ascii; - YCHAR *w; - - if(dev->param.auto_unicode){ - - is_ascii = 1; - w = name; - - /* Figure out if the name will fit in ascii character set */ - while(is_ascii && *w){ - if((*w) & 0xff00) - is_ascii = 0; - w++; - } - - if(is_ascii){ - /* It is an ASCII name, so do a unicode to ascii conversion */ - char *ascii_oh_name = (char *)oh_name; - int n = YAFFS_MAX_NAME_LENGTH - 1; - while(n > 0 && *name){ - *ascii_oh_name= *name; - name++; - ascii_oh_name++; - n--; - } - } else{ - /* It is a unicode name, so save starting at the second YCHAR */ - *oh_name = 0; - yaffs_strncpy(oh_name+1,name, YAFFS_MAX_NAME_LENGTH -2); - } + strcpy(local_name, YAFFS_LOSTNFOUND_PREFIX); + strcat(local_name, x); + strncpy(name, local_name, buffer_size - 1); } - else -#endif - yaffs_strncpy(oh_name,name, YAFFS_MAX_NAME_LENGTH - 1); - } -int yaffs_get_obj_name(yaffs_obj_t * obj, YCHAR * name, int buffer_size) +int yaffs_get_obj_name(struct yaffs_obj *obj, YCHAR * name, int buffer_size) { memset(name, 0, buffer_size * sizeof(YCHAR)); - + yaffs_check_obj_details_loaded(obj); if (obj->obj_id == YAFFS_OBJECTID_LOSTNFOUND) { - yaffs_strncpy(name, YAFFS_LOSTNFOUND_NAME, buffer_size - 1); - } -#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM + strncpy(name, YAFFS_LOSTNFOUND_NAME, buffer_size - 1); + } +#ifndef CONFIG_YAFFS_NO_SHORT_NAMES else if (obj->short_name[0]) { - yaffs_strcpy(name, obj->short_name); + strcpy(name, obj->short_name); } #endif - else if(obj->hdr_chunk > 0) { + else if (obj->hdr_chunk > 0) { int result; - __u8 *buffer = yaffs_get_temp_buffer(obj->my_dev, __LINE__); + u8 *buffer = yaffs_get_temp_buffer(obj->my_dev, __LINE__); - yaffs_obj_header *oh = (yaffs_obj_header *) buffer; + struct yaffs_obj_hdr *oh = (struct yaffs_obj_hdr *)buffer; memset(buffer, 0, obj->my_dev->data_bytes_per_chunk); if (obj->hdr_chunk > 0) { result = yaffs_rd_chunk_tags_nand(obj->my_dev, - obj->hdr_chunk, buffer, - NULL); + obj->hdr_chunk, + buffer, NULL); } - yaffs_load_name_from_oh(obj->my_dev,name,oh->name,buffer_size); + yaffs_load_name_from_oh(obj->my_dev, name, oh->name, + buffer_size); yaffs_release_temp_buffer(obj->my_dev, buffer, __LINE__); } - yaffs_fix_null_name(obj,name,buffer_size); + yaffs_fix_null_name(obj, name, buffer_size); - return yaffs_strnlen(name,YAFFS_MAX_NAME_LENGTH); + return strnlen(name, YAFFS_MAX_NAME_LENGTH); } - -int yaffs_get_obj_length(yaffs_obj_t *obj) +int yaffs_get_obj_length(struct yaffs_obj *obj) { /* Dereference any hard linking */ obj = yaffs_get_equivalent_obj(obj); if (obj->variant_type == YAFFS_OBJECT_TYPE_FILE) return obj->variant.file_variant.file_size; - if (obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK){ - if(!obj->variant.symlink_variant.alias) + if (obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK) { + if (!obj->variant.symlink_variant.alias) return 0; - return yaffs_strnlen(obj->variant.symlink_variant.alias,YAFFS_MAX_ALIAS_LENGTH); + return strnlen(obj->variant.symlink_variant.alias, + YAFFS_MAX_ALIAS_LENGTH); } else { /* Only a directory should drop through to here */ return obj->my_dev->data_bytes_per_chunk; } } -int yaffs_get_obj_link_count(yaffs_obj_t *obj) +int yaffs_get_obj_link_count(struct yaffs_obj *obj) { int count = 0; - struct ylist_head *i; + struct list_head *i; if (!obj->unlinked) - count++; /* the object itself */ + count++; /* the object itself */ - ylist_for_each(i, &obj->hard_links) - count++; /* add the hard links; */ + list_for_each(i, &obj->hard_links) + count++; /* add the hard links; */ return count; } -int yaffs_get_obj_inode(yaffs_obj_t *obj) +int yaffs_get_obj_inode(struct yaffs_obj *obj) { obj = yaffs_get_equivalent_obj(obj); return obj->obj_id; } -unsigned yaffs_get_obj_type(yaffs_obj_t *obj) +unsigned yaffs_get_obj_type(struct yaffs_obj *obj) { obj = yaffs_get_equivalent_obj(obj); @@ -4849,7 +4689,7 @@ unsigned yaffs_get_obj_type(yaffs_obj_t *obj) } } -YCHAR *yaffs_get_symlink_alias(yaffs_obj_t *obj) +YCHAR *yaffs_get_symlink_alias(struct yaffs_obj *obj) { obj = yaffs_get_equivalent_obj(obj); if (obj->variant_type == YAFFS_OBJECT_TYPE_SYMLINK) @@ -4858,201 +4698,9 @@ YCHAR *yaffs_get_symlink_alias(yaffs_obj_t *obj) return yaffs_clone_str(_Y("")); } -#ifndef CONFIG_YAFFS_WINCE - -int yaffs_set_attribs(yaffs_obj_t *obj, struct iattr *attr) -{ - unsigned int valid = attr->ia_valid; - - if (valid & ATTR_MODE) - obj->yst_mode = attr->ia_mode; - if (valid & ATTR_UID) - obj->yst_uid = attr->ia_uid; - if (valid & ATTR_GID) - obj->yst_gid = attr->ia_gid; - - if (valid & ATTR_ATIME) - obj->yst_atime = Y_TIME_CONVERT(attr->ia_atime); - if (valid & ATTR_CTIME) - obj->yst_ctime = Y_TIME_CONVERT(attr->ia_ctime); - if (valid & ATTR_MTIME) - obj->yst_mtime = Y_TIME_CONVERT(attr->ia_mtime); - - if (valid & ATTR_SIZE) - yaffs_resize_file(obj, attr->ia_size); - - yaffs_update_oh(obj, NULL, 1, 0, 0, NULL); - - return YAFFS_OK; - -} -int yaffs_get_attribs(yaffs_obj_t *obj, struct iattr *attr) -{ - unsigned int valid = 0; - - attr->ia_mode = obj->yst_mode; - valid |= ATTR_MODE; - attr->ia_uid = obj->yst_uid; - valid |= ATTR_UID; - attr->ia_gid = obj->yst_gid; - valid |= ATTR_GID; - - Y_TIME_CONVERT(attr->ia_atime) = obj->yst_atime; - valid |= ATTR_ATIME; - Y_TIME_CONVERT(attr->ia_ctime) = obj->yst_ctime; - valid |= ATTR_CTIME; - Y_TIME_CONVERT(attr->ia_mtime) = obj->yst_mtime; - valid |= ATTR_MTIME; - - attr->ia_size = yaffs_get_file_size(obj); - valid |= ATTR_SIZE; - - attr->ia_valid = valid; - - return YAFFS_OK; -} - -#endif - - -static int yaffs_do_xattrib_mod(yaffs_obj_t *obj, int set, const YCHAR *name, const void *value, int size, int flags) -{ - yaffs_xattr_mod xmod; - - int result; - - xmod.set = set; - xmod.name = name; - xmod.data = value; - xmod.size = size; - xmod.flags = flags; - xmod.result = -ENOSPC; - - result = yaffs_update_oh(obj, NULL, 0, 0, 0, &xmod); - - if(result > 0) - return xmod.result; - else - return -ENOSPC; -} - -static int yaffs_apply_xattrib_mod(yaffs_obj_t *obj, char *buffer, yaffs_xattr_mod *xmod) -{ - int retval = 0; - int x_offs = sizeof(yaffs_obj_header); - yaffs_dev_t *dev = obj->my_dev; - int x_size = dev->data_bytes_per_chunk - sizeof(yaffs_obj_header); - - char * x_buffer = buffer + x_offs; - - if(xmod->set) - retval = nval_set(x_buffer, x_size, xmod->name, xmod->data, xmod->size, xmod->flags); - else - retval = nval_del(x_buffer, x_size, xmod->name); - - obj->has_xattr = nval_hasvalues(x_buffer, x_size); - obj->xattr_known = 1; - - xmod->result = retval; - - return retval; -} - -static int yaffs_do_xattrib_fetch(yaffs_obj_t *obj, const YCHAR *name, void *value, int size) -{ - char *buffer = NULL; - int result; - yaffs_ext_tags tags; - yaffs_dev_t *dev = obj->my_dev; - int x_offs = sizeof(yaffs_obj_header); - int x_size = dev->data_bytes_per_chunk - sizeof(yaffs_obj_header); - - char * x_buffer; - - int retval = 0; - - if(obj->hdr_chunk < 1) - return -ENODATA; - - /* If we know that the object has no xattribs then don't do all the - * reading and parsing. - */ - if(obj->xattr_known && !obj->has_xattr){ - if(name) - return -ENODATA; - else - return 0; - } - - buffer = (char *) yaffs_get_temp_buffer(dev, __LINE__); - if(!buffer) - return -ENOMEM; - - result = yaffs_rd_chunk_tags_nand(dev,obj->hdr_chunk, (__u8 *)buffer, &tags); - - if(result != YAFFS_OK) - retval = -ENOENT; - else{ - x_buffer = buffer + x_offs; - - if (!obj->xattr_known){ - obj->has_xattr = nval_hasvalues(x_buffer, x_size); - obj->xattr_known = 1; - } - - if(name) - retval = nval_get(x_buffer, x_size, name, value, size); - else - retval = nval_list(x_buffer, x_size, value,size); - } - yaffs_release_temp_buffer(dev,(__u8 *)buffer,__LINE__); - return retval; -} - -int yaffs_set_xattrib(yaffs_obj_t *obj, const YCHAR *name, const void * value, int size, int flags) -{ - return yaffs_do_xattrib_mod(obj, 1, name, value, size, flags); -} - -int yaffs_remove_xattrib(yaffs_obj_t *obj, const YCHAR *name) -{ - return yaffs_do_xattrib_mod(obj, 0, name, NULL, 0, 0); -} - -int yaffs_get_xattrib(yaffs_obj_t *obj, const YCHAR *name, void *value, int size) -{ - return yaffs_do_xattrib_fetch(obj, name, value, size); -} - -int yaffs_list_xattrib(yaffs_obj_t *obj, char *buffer, int size) -{ - return yaffs_do_xattrib_fetch(obj, NULL, buffer,size); -} - +/*--------------------------- Initialisation code -------------------------- */ - -#if 0 -int yaffs_dump_obj(yaffs_obj_t *obj) -{ - YCHAR name[257]; - - yaffs_get_obj_name(obj, name, YAFFS_MAX_NAME_LENGTH + 1); - - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("Object %d, inode %d \"%s\"\n dirty %d valid %d serial %d sum %d" - " chunk %d type %d size %d\n" - TENDSTR), obj->obj_id, yaffs_get_obj_inode(obj), name, - obj->dirty, obj->valid, obj->serial, obj->sum, obj->hdr_chunk, - yaffs_get_obj_type(obj), yaffs_get_obj_length(obj))); - - return YAFFS_OK; -} -#endif - -/*---------------------------- Initialisation code -------------------------------------- */ - -static int yaffs_cehck_dev_fns(const yaffs_dev_t *dev) +static int yaffs_check_dev_fns(const struct yaffs_dev *dev) { /* Common functions, gotta have */ @@ -5066,8 +4714,7 @@ static int yaffs_cehck_dev_fns(const yaffs_dev_t *dev) dev->param.read_chunk_tags_fn && !dev->param.write_chunk_fn && !dev->param.read_chunk_fn && - dev->param.bad_block_fn && - dev->param.query_block_fn) + dev->param.bad_block_fn && dev->param.query_block_fn) return 1; #endif @@ -5077,19 +4724,17 @@ static int yaffs_cehck_dev_fns(const yaffs_dev_t *dev) !dev->param.read_chunk_tags_fn && dev->param.write_chunk_fn && dev->param.read_chunk_fn && - !dev->param.bad_block_fn && - !dev->param.query_block_fn) + !dev->param.bad_block_fn && !dev->param.query_block_fn) return 1; - return 0; /* bad */ + return 0; /* bad */ } - -static int yaffs_create_initial_dir(yaffs_dev_t *dev) +static int yaffs_create_initial_dir(struct yaffs_dev *dev) { /* Initialise the unlinked, deleted, root and lost and found directories */ - dev->lost_n_found = dev->root_dir = NULL; + dev->lost_n_found = dev->root_dir = NULL; dev->unlinked_dir = dev->del_dir = NULL; dev->unlinked_dir = @@ -5100,12 +4745,13 @@ static int yaffs_create_initial_dir(yaffs_dev_t *dev) dev->root_dir = yaffs_create_fake_dir(dev, YAFFS_OBJECTID_ROOT, - YAFFS_ROOT_MODE | S_IFDIR); + YAFFS_ROOT_MODE | S_IFDIR); dev->lost_n_found = yaffs_create_fake_dir(dev, YAFFS_OBJECTID_LOSTNFOUND, - YAFFS_LOSTNFOUND_MODE | S_IFDIR); + YAFFS_LOSTNFOUND_MODE | S_IFDIR); - if (dev->lost_n_found && dev->root_dir && dev->unlinked_dir && dev->del_dir) { + if (dev->lost_n_found && dev->root_dir && dev->unlinked_dir + && dev->del_dir) { yaffs_add_obj_to_dir(dev->root_dir, dev->lost_n_found); return YAFFS_OK; } @@ -5113,18 +4759,20 @@ static int yaffs_create_initial_dir(yaffs_dev_t *dev) return YAFFS_FAIL; } -int yaffs_guts_initialise(yaffs_dev_t *dev) +int yaffs_guts_initialise(struct yaffs_dev *dev) { int init_failed = 0; unsigned x; int bits; - T(YAFFS_TRACE_TRACING, (TSTR("yaffs: yaffs_guts_initialise()" TENDSTR))); + yaffs_trace(YAFFS_TRACE_TRACING, "yaffs: yaffs_guts_initialise()" ); /* Check stuff that must be set */ if (!dev) { - T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Need a device" TENDSTR))); + yaffs_trace(YAFFS_TRACE_ALWAYS, + "yaffs: Need a device" + ); return YAFFS_FAIL; } @@ -5145,53 +4793,51 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) /* Check geometry parameters. */ - if ((!dev->param.inband_tags && dev->param.is_yaffs2 && dev->param.total_bytes_per_chunk < 1024) || - (!dev->param.is_yaffs2 && dev->param.total_bytes_per_chunk < 512) || - (dev->param.inband_tags && !dev->param.is_yaffs2) || - dev->param.chunks_per_block < 2 || - dev->param.n_reserved_blocks < 2 || - dev->internal_start_block <= 0 || - dev->internal_end_block <= 0 || - dev->internal_end_block <= (dev->internal_start_block + dev->param.n_reserved_blocks + 2)) { /* otherwise it is too small */ - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s, inband_tags %d " - TENDSTR), dev->param.total_bytes_per_chunk, dev->param.is_yaffs2 ? "2" : "", dev->param.inband_tags)); + if ((!dev->param.inband_tags && dev->param.is_yaffs2 && + dev->param.total_bytes_per_chunk < 1024) || + (!dev->param.is_yaffs2 && + dev->param.total_bytes_per_chunk < 512) || + (dev->param.inband_tags && !dev->param.is_yaffs2) || + dev->param.chunks_per_block < 2 || + dev->param.n_reserved_blocks < 2 || + dev->internal_start_block <= 0 || + dev->internal_end_block <= 0 || + dev->internal_end_block <= + (dev->internal_start_block + dev->param.n_reserved_blocks + 2) + ) { + /* otherwise it is too small */ + yaffs_trace(YAFFS_TRACE_ALWAYS, + "NAND geometry problems: chunk size %d, type is yaffs%s, inband_tags %d ", + dev->param.total_bytes_per_chunk, + dev->param.is_yaffs2 ? "2" : "", + dev->param.inband_tags); return YAFFS_FAIL; } if (yaffs_init_nand(dev) != YAFFS_OK) { - T(YAFFS_TRACE_ALWAYS, - (TSTR("yaffs: InitialiseNAND failed" TENDSTR))); + yaffs_trace(YAFFS_TRACE_ALWAYS, "InitialiseNAND failed"); return YAFFS_FAIL; } /* Sort out space for inband tags, if required */ if (dev->param.inband_tags) - dev->data_bytes_per_chunk = dev->param.total_bytes_per_chunk - sizeof(yaffs_packed_tags2_tags_only); + dev->data_bytes_per_chunk = + dev->param.total_bytes_per_chunk - + sizeof(struct yaffs_packed_tags2_tags_only); else dev->data_bytes_per_chunk = dev->param.total_bytes_per_chunk; /* Got the right mix of functions? */ - if (!yaffs_cehck_dev_fns(dev)) { + if (!yaffs_check_dev_fns(dev)) { /* Function missing */ - T(YAFFS_TRACE_ALWAYS, - (TSTR - ("yaffs: device function(s) missing or wrong\n" TENDSTR))); - - return YAFFS_FAIL; - } + yaffs_trace(YAFFS_TRACE_ALWAYS, + "device function(s) missing or wrong"); - /* This is really a compilation check. */ - if (!yaffs_check_structures()) { - T(YAFFS_TRACE_ALWAYS, - (TSTR("yaffs_check_structures failed\n" TENDSTR))); return YAFFS_FAIL; } if (dev->is_mounted) { - T(YAFFS_TRACE_ALWAYS, - (TSTR("yaffs: device already mounted\n" TENDSTR))); + yaffs_trace(YAFFS_TRACE_ALWAYS, "device already mounted"); return YAFFS_FAIL; } @@ -5210,7 +4856,7 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) x >>= dev->chunk_shift; dev->chunk_div = x; /* We only use chunk mask if chunk_div is 1 */ - dev->chunk_mask = (1<chunk_shift) - 1; + dev->chunk_mask = (1 << dev->chunk_shift) - 1; /* * Calculate chunk_grp_bits. @@ -5230,10 +4876,11 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) dev->tnode_width = 16; else dev->tnode_width = bits; - } else + } else { dev->tnode_width = 16; + } - dev->tnode_mask = (1<tnode_width)-1; + dev->tnode_mask = (1 << dev->tnode_width) - 1; /* Level0 Tnodes are 16 bits or wider (if wide tnodes are enabled), * so if the bitwidth of the @@ -5246,9 +4893,9 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) else dev->chunk_grp_bits = bits - dev->tnode_width; - dev->tnode_size = (dev->tnode_width * YAFFS_NTNODES_LEVEL0)/8; - if(dev->tnode_size < sizeof(yaffs_tnode_t)) - dev->tnode_size = sizeof(yaffs_tnode_t); + dev->tnode_size = (dev->tnode_width * YAFFS_NTNODES_LEVEL0) / 8; + if (dev->tnode_size < sizeof(struct yaffs_tnode)) + dev->tnode_size = sizeof(struct yaffs_tnode); dev->chunk_grp_size = 1 << dev->chunk_grp_bits; @@ -5257,8 +4904,7 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) * the chunk group size > chunks per block. * This can be remedied by using larger "virtual blocks". */ - T(YAFFS_TRACE_ALWAYS, - (TSTR("yaffs: chunk group too large\n" TENDSTR))); + yaffs_trace(YAFFS_TRACE_ALWAYS, "chunk group too large"); return YAFFS_FAIL; } @@ -5282,9 +4928,9 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) dev->n_tags_ecc_unfixed = 0; dev->n_erase_failures = 0; dev->n_erased_blocks = 0; - dev->gc_disable= 0; - dev->has_pending_prioritised_gc = 1; /* Assume the worst for now, will get fixed on first GC */ - YINIT_LIST_HEAD(&dev->dirty_dirs); + dev->gc_disable = 0; + dev->has_pending_prioritised_gc = 1; /* Assume the worst for now, will get fixed on first GC */ + INIT_LIST_HEAD(&dev->dirty_dirs); dev->oldest_dirty_seq = 0; dev->oldest_dirty_block = 0; @@ -5295,19 +4941,18 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) dev->cache = NULL; dev->gc_cleanup_list = NULL; - - if (!init_failed && - dev->param.n_caches > 0) { + if (!init_failed && dev->param.n_caches > 0) { int i; void *buf; - int cache_bytes = dev->param.n_caches * sizeof(yaffs_cache_t); + int cache_bytes = + dev->param.n_caches * sizeof(struct yaffs_cache); if (dev->param.n_caches > YAFFS_MAX_SHORT_OP_CACHES) dev->param.n_caches = YAFFS_MAX_SHORT_OP_CACHES; - dev->cache = YMALLOC(cache_bytes); + dev->cache = kmalloc(cache_bytes, GFP_NOFS); - buf = (__u8 *) dev->cache; + buf = (u8 *) dev->cache; if (dev->cache) memset(dev->cache, 0, cache_bytes); @@ -5316,7 +4961,8 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) dev->cache[i].object = NULL; dev->cache[i].last_use = 0; dev->cache[i].dirty = 0; - dev->cache[i].data = buf = YMALLOC_DMA(dev->param.total_bytes_per_chunk); + dev->cache[i].data = buf = + kmalloc(dev->param.total_bytes_per_chunk, GFP_NOFS); } if (!buf) init_failed = 1; @@ -5327,7 +4973,9 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) dev->cache_hits = 0; if (!init_failed) { - dev->gc_cleanup_list = YMALLOC(dev->param.chunks_per_block * sizeof(__u32)); + dev->gc_cleanup_list = + kmalloc(dev->param.chunks_per_block * sizeof(u32), + GFP_NOFS); if (!dev->gc_cleanup_list) init_failed = 1; } @@ -5343,14 +4991,14 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) if (!init_failed && !yaffs_create_initial_dir(dev)) init_failed = 1; - if (!init_failed) { /* Now scan the flash. */ if (dev->param.is_yaffs2) { if (yaffs2_checkpt_restore(dev)) { yaffs_check_obj_details_loaded(dev->root_dir); - T(YAFFS_TRACE_ALWAYS, - (TSTR("yaffs: restored from checkpoint" TENDSTR))); + yaffs_trace(YAFFS_TRACE_CHECKPOINT | YAFFS_TRACE_MOUNT, + "yaffs: restored from checkpoint" + ); } else { /* Clean up the mess caused by an aborted checkpoint load @@ -5373,25 +5021,27 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) yaffs_init_tnodes_and_objs(dev); - if (!init_failed && !yaffs_create_initial_dir(dev)) + if (!init_failed + && !yaffs_create_initial_dir(dev)) init_failed = 1; if (!init_failed && !yaffs2_scan_backwards(dev)) init_failed = 1; } - } else if (!yaffs1_scan(dev)) - init_failed = 1; + } else if (!yaffs1_scan(dev)) { + init_failed = 1; + } yaffs_strip_deleted_objs(dev); yaffs_fix_hanging_objs(dev); - if(dev->param.empty_lost_n_found) + if (dev->param.empty_lost_n_found) yaffs_empty_l_n_f(dev); } if (init_failed) { /* Clean up the mess */ - T(YAFFS_TRACE_TRACING, - (TSTR("yaffs: yaffs_guts_initialise() aborted.\n" TENDSTR))); + yaffs_trace(YAFFS_TRACE_TRACING, + "yaffs: yaffs_guts_initialise() aborted."); yaffs_deinitialise(dev); return YAFFS_FAIL; @@ -5410,39 +5060,38 @@ int yaffs_guts_initialise(yaffs_dev_t *dev) yaffs_verify_blocks(dev); /* Clean up any aborted checkpoint data */ - if(!dev->is_checkpointed && dev->blocks_in_checkpt > 0) + if (!dev->is_checkpointed && dev->blocks_in_checkpt > 0) yaffs2_checkpt_invalidate(dev); - T(YAFFS_TRACE_TRACING, - (TSTR("yaffs: yaffs_guts_initialise() done.\n" TENDSTR))); + yaffs_trace(YAFFS_TRACE_TRACING, + "yaffs: yaffs_guts_initialise() done."); return YAFFS_OK; } -void yaffs_deinitialise(yaffs_dev_t *dev) +void yaffs_deinitialise(struct yaffs_dev *dev) { if (dev->is_mounted) { int i; yaffs_deinit_blocks(dev); yaffs_deinit_tnodes_and_objs(dev); - if (dev->param.n_caches > 0 && - dev->cache) { + if (dev->param.n_caches > 0 && dev->cache) { for (i = 0; i < dev->param.n_caches; i++) { if (dev->cache[i].data) - YFREE(dev->cache[i].data); + kfree(dev->cache[i].data); dev->cache[i].data = NULL; } - YFREE(dev->cache); + kfree(dev->cache); dev->cache = NULL; } - YFREE(dev->gc_cleanup_list); + kfree(dev->gc_cleanup_list); for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) - YFREE(dev->temp_buffer[i].buffer); + kfree(dev->temp_buffer[i].buffer); dev->is_mounted = 0; @@ -5451,12 +5100,12 @@ void yaffs_deinitialise(yaffs_dev_t *dev) } } -int yaffs_count_free_chunks(yaffs_dev_t *dev) +int yaffs_count_free_chunks(struct yaffs_dev *dev) { - int n_free=0; + int n_free = 0; int b; - yaffs_block_info_t *blk; + struct yaffs_block_info *blk; blk = dev->block_info; for (b = dev->internal_start_block; b <= dev->internal_end_block; b++) { @@ -5478,7 +5127,7 @@ int yaffs_count_free_chunks(yaffs_dev_t *dev) return n_free; } -int yaffs_get_n_free_chunks(yaffs_dev_t *dev) +int yaffs_get_n_free_chunks(struct yaffs_dev *dev) { /* This is what we report to the outside world */ @@ -5487,12 +5136,7 @@ int yaffs_get_n_free_chunks(yaffs_dev_t *dev) int blocks_for_checkpt; int i; -#if 1 n_free = dev->n_free_chunks; -#else - n_free = yaffs_count_free_chunks(dev); -#endif - n_free += dev->n_deleted_files; /* Now count the number of dirty chunks in the cache and subtract those */ @@ -5504,7 +5148,8 @@ int yaffs_get_n_free_chunks(yaffs_dev_t *dev) n_free -= n_dirty_caches; - n_free -= ((dev->param.n_reserved_blocks + 1) * dev->param.chunks_per_block); + n_free -= + ((dev->param.n_reserved_blocks + 1) * dev->param.chunks_per_block); /* Now we figure out how much to reserve for the checkpoint and report that... */ blocks_for_checkpt = yaffs_calc_checkpt_blocks_required(dev); @@ -5517,28 +5162,3 @@ int yaffs_get_n_free_chunks(yaffs_dev_t *dev) return n_free; } - - -/*---------------------------------------- YAFFS test code ----------------------*/ - -#define yaffs_check_struct(structure, syze, name) \ - do { \ - if (sizeof(structure) != syze) { \ - T(YAFFS_TRACE_ALWAYS, (TSTR("%s should be %d but is %d\n" TENDSTR),\ - name, syze, (int) sizeof(structure))); \ - return YAFFS_FAIL; \ - } \ - } while (0) - -static int yaffs_check_structures(void) -{ -/* yaffs_check_struct(yaffs_tags_t,8,"yaffs_tags_t"); */ -/* yaffs_check_struct(yaffs_tags_union_t,8,"yaffs_tags_union_t"); */ -/* yaffs_check_struct(yaffs_spare,16,"yaffs_spare"); */ -/* yaffs_check_struct(yaffs_tnode_t, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_tnode_t"); */ - -#ifndef CONFIG_YAFFS_WINCE - yaffs_check_struct(yaffs_obj_header, 512, "yaffs_obj_header"); -#endif - return YAFFS_OK; -}