X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=blobdiff_plain;f=yaffs_fs.c;h=eceb34f3c0e23bd1f771d690255bdae2801497a2;hp=15c27832ef4f233db22e3f97470610522bdacb8c;hb=e6104fde6ee694e807c19a3bb7ba52b50cfb55af;hpb=b0b91352fff81d01d34fd562629ce199c255cdd6 diff --git a/yaffs_fs.c b/yaffs_fs.c index 15c2783..eceb34f 100644 --- a/yaffs_fs.c +++ b/yaffs_fs.c @@ -23,7 +23,7 @@ * This is the file system front-end to YAFFS that hooks it up to * the VFS. * - * Special notes: + * Special notes: * >> 2.4: sb->u.generic_sbp points to the yaffs_Device associated with * this superblock * >> 2.6: sb->s_fs_info points to the yaffs_Device associated with this @@ -32,7 +32,7 @@ */ const char *yaffs_fs_c_version = - "$Id: yaffs_fs.c,v 1.60 2007-05-15 20:07:40 charles Exp $"; + "$Id: yaffs_fs.c,v 1.65 2007-12-13 15:35:17 wookey Exp $"; extern const char *yaffs_guts_c_version; #include @@ -89,13 +89,23 @@ extern const char *yaffs_guts_c_version; #include "yportenv.h" #include "yaffs_guts.h" -unsigned yaffs_traceMask = YAFFS_TRACE_BAD_BLOCKS - /* | 0xFFFFFFFF */; - #include #include "yaffs_mtdif.h" +#include "yaffs_mtdif1.h" #include "yaffs_mtdif2.h" +unsigned int yaffs_traceMask = YAFFS_TRACE_BAD_BLOCKS; +unsigned int yaffs_wr_attempts = YAFFS_WR_ATTEMPTS; + +/* Module Parameters */ +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) +module_param(yaffs_traceMask,uint,0644); +module_param(yaffs_wr_attempts,uint,0644); +#else +MODULE_PARM(yaffs_traceMask,"i"); +MODULE_PARM(yaffs_wr_attempts,"i"); +#endif + /*#define T(x) printk x */ #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18)) @@ -203,24 +213,45 @@ static struct address_space_operations yaffs_file_address_operations = { .commit_write = yaffs_commit_write, }; +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,22)) static struct file_operations yaffs_file_operations = { -#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18)) .read = do_sync_read, .write = do_sync_write, .aio_read = generic_file_aio_read, .aio_write = generic_file_aio_write, + .mmap = generic_file_mmap, + .flush = yaffs_file_flush, + .fsync = yaffs_sync_object, + .splice_read = generic_file_splice_read, + .splice_write = generic_file_splice_write, +}; + +#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18)) + +static struct file_operations yaffs_file_operations = { + .read = do_sync_read, + .write = do_sync_write, + .aio_read = generic_file_aio_read, + .aio_write = generic_file_aio_write, + .mmap = generic_file_mmap, + .flush = yaffs_file_flush, + .fsync = yaffs_sync_object, + .sendfile = generic_file_sendfile, +}; + #else + +static struct file_operations yaffs_file_operations = { .read = generic_file_read, .write = generic_file_write, -#endif .mmap = generic_file_mmap, .flush = yaffs_file_flush, .fsync = yaffs_sync_object, #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) .sendfile = generic_file_sendfile, #endif - }; +#endif static struct inode_operations yaffs_file_inode_operations = { .setattr = yaffs_setattr, @@ -360,7 +391,7 @@ static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry) dentry->d_name.name); obj = yaffs_GetEquivalentObject(obj); /* in case it was a hardlink */ - + /* Can't hold gross lock when calling yaffs_get_inode() */ yaffs_GrossUnlock(dev); @@ -698,21 +729,21 @@ static void yaffs_FillInodeFromObject(struct inode *inode, yaffs_Object * obj) obj->yst_mode &= ~S_IFMT; obj->yst_mode |= S_IFREG; } - + break; case YAFFS_OBJECT_TYPE_SYMLINK : if( ! S_ISLNK(mode) ){ obj->yst_mode &= ~S_IFMT; obj->yst_mode |= S_IFLNK; } - + break; case YAFFS_OBJECT_TYPE_DIRECTORY : if( ! S_ISDIR(mode) ){ obj->yst_mode &= ~S_IFMT; obj->yst_mode |= S_IFDIR; } - + break; case YAFFS_OBJECT_TYPE_UNKNOWN : case YAFFS_OBJECT_TYPE_HARDLINK : @@ -989,7 +1020,7 @@ static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, int error = -ENOSPC; uid_t uid = current->fsuid; gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : current->fsgid; - + if((dir->i_mode & S_ISGID) && S_ISDIR(mode)) mode |= S_ISGID; @@ -1044,7 +1075,7 @@ static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, obj = NULL; /* Do we ever get here? */ break; } - + /* Can not call yaffs_get_inode() with gross lock held */ yaffs_GrossUnlock(dev); @@ -1233,13 +1264,13 @@ static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry, target = yaffs_FindObjectByName(yaffs_InodeToObject(new_dir), new_dentry->d_name.name); - - + + if (target && target->variantType == YAFFS_OBJECT_TYPE_DIRECTORY && !list_empty(&target->variant.directoryVariant.children)) { - + T(YAFFS_TRACE_OS, (KERN_DEBUG "target is non-empty dir\n")); retVal = YAFFS_FAIL; @@ -1247,7 +1278,7 @@ static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry, /* Now does unlinking internally using shadowing mechanism */ T(YAFFS_TRACE_OS, (KERN_DEBUG "calling yaffs_RenameObject\n")); - + retVal = yaffs_RenameObject(yaffs_InodeToObject(old_dir), old_dentry->d_name.name, @@ -1359,7 +1390,7 @@ static int yaffs_do_sync_fs(struct super_block *sb) if(dev) yaffs_CheckpointSave(dev); - + yaffs_GrossUnlock(dev); sb->s_dirt = 0; @@ -1390,16 +1421,16 @@ static int yaffs_sync_fs(struct super_block *sb) { T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_sync_fs\n")); - + return 0; /* yaffs_do_sync_fs(sb);*/ - + } static void yaffs_read_inode(struct inode *inode) { /* NB This is called as a side effect of other functions, but - * we had to release the lock to prevent deadlocks, so + * we had to release the lock to prevent deadlocks, so * need to lock again. */ @@ -1410,7 +1441,7 @@ static void yaffs_read_inode(struct inode *inode) (KERN_DEBUG "yaffs_read_inode for %d\n", (int)inode->i_ino)); yaffs_GrossLock(dev); - + obj = yaffs_FindObjectByNumber(dev, inode->i_ino); yaffs_FillInodeFromObject(inode, obj); @@ -1420,34 +1451,36 @@ static void yaffs_read_inode(struct inode *inode) static LIST_HEAD(yaffs_dev_list); +#if 0 // not used static int yaffs_remount_fs(struct super_block *sb, int *flags, char *data) { yaffs_Device *dev = yaffs_SuperToDevice(sb); if( *flags & MS_RDONLY ) { struct mtd_info *mtd = yaffs_SuperToDevice(sb)->genericDevice; - + T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_remount_fs: %s: RO\n", dev->name )); yaffs_GrossLock(dev); - + yaffs_FlushEntireDeviceCache(dev); - + yaffs_CheckpointSave(dev); - + if (mtd->sync) mtd->sync(mtd); yaffs_GrossUnlock(dev); } else { - T(YAFFS_TRACE_OS, + T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_remount_fs: %s: RW\n", dev->name )); } - + return 0; } +#endif static void yaffs_put_super(struct super_block *sb) { @@ -1456,7 +1489,7 @@ static void yaffs_put_super(struct super_block *sb) T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_put_super\n")); yaffs_GrossLock(dev); - + yaffs_FlushEntireDeviceCache(dev); yaffs_CheckpointSave(dev); @@ -1466,12 +1499,12 @@ static void yaffs_put_super(struct super_block *sb) } yaffs_Deinitialise(dev); - + yaffs_GrossUnlock(dev); /* we assume this is protected by lock_kernel() in mount/umount */ list_del(&dev->devList); - + if(dev->spareBuffer){ YFREE(dev->spareBuffer); dev->spareBuffer = NULL; @@ -1497,7 +1530,7 @@ static void yaffs_MTDPutSuper(struct super_block *sb) static void yaffs_MarkSuperBlockDirty(void *vsb) { struct super_block *sb = (struct super_block *)vsb; - + T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_MarkSuperBlockDirty() sb = %p\n",sb)); // if(sb) // sb->s_dirt = 1; @@ -1516,13 +1549,13 @@ static int yaffs_parse_options(yaffs_options *options, const char *options_str) char cur_opt[MAX_OPT_LEN+1]; int p; int error = 0; - + /* Parse through the options which is a comma seperated list */ - + while(options_str && *options_str && !error){ memset(cur_opt,0,MAX_OPT_LEN+1); p = 0; - + while(*options_str && *options_str != ','){ if(p < MAX_OPT_LEN){ cur_opt[p] = *options_str; @@ -1530,7 +1563,7 @@ static int yaffs_parse_options(yaffs_options *options, const char *options_str) } options_str++; } - + if(!strcmp(cur_opt,"inband-tags")) options->inband_tags = 1; else if(!strcmp(cur_opt,"no-cache")) @@ -1546,7 +1579,7 @@ static int yaffs_parse_options(yaffs_options *options, const char *options_str) printk(KERN_INFO "yaffs: Bad mount option \"%s\"\n",cur_opt); error = 1; } - + } return error; @@ -1564,7 +1597,7 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion, struct mtd_info *mtd; int err; char *data_str = (char *)data; - + yaffs_options options; sb->s_magic = YAFFS_MAGIC; @@ -1580,14 +1613,14 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion, printk(KERN_INFO "yaffs: dev is %d name is \"%s\"\n", sb->s_dev, yaffs_devname(sb, devname_buf)); - + if(!data_str) data_str = ""; - + printk(KERN_INFO "yaffs: passed flags \"%s\"\n",data_str); - + memset(&options,0,sizeof(options)); - + if(yaffs_parse_options(&options,data_str)){ /* Option parsing failed */ return NULL; @@ -1641,10 +1674,10 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion, T(YAFFS_TRACE_OS, (" oobsize %d\n", mtd->oobsize)); T(YAFFS_TRACE_OS, (" erasesize %d\n", mtd->erasesize)); T(YAFFS_TRACE_OS, (" size %d\n", mtd->size)); - + #ifdef CONFIG_YAFFS_AUTO_YAFFS2 - if (yaffsVersion == 1 && + if (yaffsVersion == 1 && #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) mtd->writesize >= 2048) { #else @@ -1652,10 +1685,10 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion, #endif T(YAFFS_TRACE_ALWAYS,("yaffs: auto selecting yaffs2\n")); yaffsVersion = 2; - } - + } + /* Added NCB 26/5/2006 for completeness */ - if (yaffsVersion == 2 && + if (yaffsVersion == 2 && #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) mtd->writesize == 512) { #else @@ -1663,7 +1696,7 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion, #endif T(YAFFS_TRACE_ALWAYS,("yaffs: auto selecting yaffs1\n")); yaffsVersion = 1; - } + } #endif @@ -1774,12 +1807,21 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion, #endif nBlocks = mtd->size / mtd->erasesize; - dev->nCheckpointReservedBlocks = CONFIG_YAFFS_CHECKPOINT_RESERVED_BLOCKS; dev->startBlock = 0; dev->endBlock = nBlocks - 1; } else { +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17)) + /* use the MTD interface in yaffs_mtdif1.c */ + dev->writeChunkWithTagsToNAND = + nandmtd1_WriteChunkWithTagsToNAND; + dev->readChunkWithTagsFromNAND = + nandmtd1_ReadChunkWithTagsFromNAND; + dev->markNANDBlockBad = nandmtd1_MarkNANDBlockBad; + dev->queryNANDBlock = nandmtd1_QueryNANDBlock; +#else dev->writeChunkToNAND = nandmtd_WriteChunkToNAND; dev->readChunkFromNAND = nandmtd_ReadChunkFromNAND; +#endif dev->isYaffs2 = 0; } /* ... and common functions */ @@ -1787,10 +1829,10 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion, dev->initialiseNAND = nandmtd_InitialiseNAND; dev->putSuperFunc = yaffs_MTDPutSuper; - + dev->superBlock = (void *)sb; dev->markSuperBlockDirty = yaffs_MarkSuperBlockDirty; - + #ifndef CONFIG_YAFFS_DOES_ECC dev->useNANDECC = 1; @@ -1802,7 +1844,7 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion, dev->skipCheckpointRead = options.skip_checkpoint_read; dev->skipCheckpointWrite = options.skip_checkpoint_write; - + /* we assume this is protected by lock_kernel() in mount/umount */ list_add_tail(&dev->devList, &yaffs_dev_list); @@ -1815,7 +1857,7 @@ static struct super_block *yaffs_internal_read_super(int yaffsVersion, T(YAFFS_TRACE_OS, ("yaffs_read_super: guts initialised %s\n", (err == YAFFS_OK) ? "OK" : "FAILED")); - + /* Release lock before yaffs_get_inode() */ yaffs_GrossUnlock(dev); @@ -1952,7 +1994,6 @@ static char *yaffs_dump_dev(char *buf, yaffs_Device * dev) buf += sprintf(buf, "chunkGroupSize..... %d\n", dev->chunkGroupSize); buf += sprintf(buf, "nErasedBlocks...... %d\n", dev->nErasedBlocks); buf += sprintf(buf, "nReservedBlocks.... %d\n", dev->nReservedBlocks); - buf += sprintf(buf, "nCheckptResBlocks.. %d\n", dev->nCheckpointReservedBlocks); buf += sprintf(buf, "blocksInCheckpoint. %d\n", dev->blocksInCheckpoint); buf += sprintf(buf, "nTnodesCreated..... %d\n", dev->nTnodesCreated); buf += sprintf(buf, "nFreeTnodes........ %d\n", dev->nFreeTnodes); @@ -2075,7 +2116,7 @@ static int yaffs_proc_write(struct file *file, const char *buf, unsigned rg = 0, mask_bitfield; char *end; char *mask_name; - char *x; + const char *x; char substring[MAX_MASK_NAME_LENGTH+1]; int i; int done = 0; @@ -2103,22 +2144,21 @@ static int yaffs_proc_write(struct file *file, const char *buf, break; } mask_name = NULL; - + mask_bitfield = simple_strtoul(buf + pos, &end, 0); if (end > buf + pos) { mask_name = "numeral"; len = end - (buf + pos); + pos += len; done = 0; } else { - for(x = buf + pos, i = 0; + for(x = buf + pos, i = 0; (*x == '_' || (*x >='a' && *x <= 'z')) && i