* 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
*/
const char *yaffs_fs_c_version =
- "$Id: yaffs_fs.c,v 1.58 2007-02-14 01:09:06 wookey Exp $";
+ "$Id: yaffs_fs.c,v 1.65 2007-12-13 15:35:17 wookey Exp $";
extern const char *yaffs_guts_c_version;
#include <linux/version.h>
#endif
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+#define WRITE_SIZE_STR "writesize"
+#define WRITE_SIZE(mtd) (mtd)->writesize
+#else
+#define WRITE_SIZE_STR "oobblock"
+#define WRITE_SIZE(mtd) (mtd)->oobblock
+#endif
+
#include <asm/uaccess.h>
#include "yportenv.h"
#include "yaffs_guts.h"
-unsigned yaffs_traceMask = YAFFS_TRACE_ALWAYS |
- YAFFS_TRACE_BAD_BLOCKS |
- YAFFS_TRACE_CHECKPOINT
- /* | 0xFFFFFFFF */;
-
#include <linux/mtd/mtd.h>
#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))
.commit_write = yaffs_commit_write,
};
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,22))
+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,
+ .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 = {
-#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,
+ .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,
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);
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 :
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;
obj = NULL; /* Do we ever get here? */
break;
}
-
+
/* Can not call yaffs_get_inode() with gross lock held */
yaffs_GrossUnlock(dev);
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;
/* 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,
if(dev)
yaffs_CheckpointSave(dev);
-
+
yaffs_GrossUnlock(dev);
sb->s_dirt = 0;
{
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.
*/
(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);
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,
+ (KERN_DEBUG "yaffs_remount_fs: %s: RW\n", dev->name ));
+ }
+
+ return 0;
+}
+#endif
+
static void yaffs_put_super(struct super_block *sb)
{
yaffs_Device *dev = yaffs_SuperToDevice(sb);
T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_put_super\n"));
yaffs_GrossLock(dev);
-
+
yaffs_FlushEntireDeviceCache(dev);
-
+
+ yaffs_CheckpointSave(dev);
+
if (dev->putSuperFunc) {
dev->putSuperFunc(sb);
}
-
- yaffs_CheckpointSave(dev);
+
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;
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;
}
+typedef struct {
+ int inband_tags;
+ int skip_checkpoint_read;
+ int skip_checkpoint_write;
+ int no_cache;
+} yaffs_options;
+
+#define MAX_OPT_LEN 20
+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;
+ p++;
+ }
+ options_str++;
+ }
+
+ if(!strcmp(cur_opt,"inband-tags"))
+ options->inband_tags = 1;
+ else if(!strcmp(cur_opt,"no-cache"))
+ options->no_cache = 1;
+ else if(!strcmp(cur_opt,"no-checkpoint-read"))
+ options->skip_checkpoint_read = 1;
+ else if(!strcmp(cur_opt,"no-checkpoint-write"))
+ options->skip_checkpoint_write = 1;
+ else if(!strcmp(cur_opt,"no-checkpoint")){
+ options->skip_checkpoint_read = 1;
+ options->skip_checkpoint_write = 1;
+ } else {
+ printk(KERN_INFO "yaffs: Bad mount option \"%s\"\n",cur_opt);
+ error = 1;
+ }
+
+ }
+
+ return error;
+}
+
static struct super_block *yaffs_internal_read_super(int yaffsVersion,
struct super_block *sb,
void *data, int silent)
char devname_buf[BDEVNAME_SIZE + 1];
struct mtd_info *mtd;
int err;
+ char *data_str = (char *)data;
+
+ yaffs_options options;
sb->s_magic = YAFFS_MAGIC;
sb->s_op = &yaffs_super_ops;
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;
+ }
+
+
sb->s_blocksize = PAGE_CACHE_SIZE;
sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
T(YAFFS_TRACE_OS, ("yaffs_read_super: Using yaffs%d\n", yaffsVersion));
T(YAFFS_TRACE_OS, (" writeoob %p\n", mtd->write_oob));
T(YAFFS_TRACE_OS, (" block_isbad %p\n", mtd->block_isbad));
T(YAFFS_TRACE_OS, (" block_markbad %p\n", mtd->block_markbad));
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
- T(YAFFS_TRACE_OS, (" writesize %d\n", mtd->writesize));
-#else
- T(YAFFS_TRACE_OS, (" oobblock %d\n", mtd->oobblock));
-#endif
+ T(YAFFS_TRACE_OS, (" %s %d\n", WRITE_SIZE_STR, WRITE_SIZE(mtd)));
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
#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
#endif
T(YAFFS_TRACE_ALWAYS,("yaffs: auto selecting yaffs1\n"));
yaffsVersion = 1;
- }
+ }
#endif
return NULL;
}
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
- if (mtd->writesize < YAFFS_BYTES_PER_CHUNK ||
-#else
- if (mtd->oobblock < YAFFS_BYTES_PER_CHUNK ||
-#endif
+ if (WRITE_SIZE(mtd) < YAFFS_BYTES_PER_CHUNK ||
mtd->oobsize != YAFFS_BYTES_PER_SPARE) {
T(YAFFS_TRACE_ALWAYS,
("yaffs: MTD device does not support have the "
dev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK;
dev->nDataBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
dev->nReservedBlocks = 5;
- dev->nShortOpCaches = 10; /* Enable short op caching */
+ dev->nShortOpCaches = (options.no_cache) ? 0 : 10;
/* ... and the functions. */
if (yaffsVersion == 2) {
#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 */
dev->initialiseNAND = nandmtd_InitialiseNAND;
dev->putSuperFunc = yaffs_MTDPutSuper;
-
+
dev->superBlock = (void *)sb;
dev->markSuperBlockDirty = yaffs_MarkSuperBlockDirty;
-
+
#ifndef CONFIG_YAFFS_DOES_ECC
dev->useNANDECC = 1;
dev->wideTnodesDisabled = 1;
#endif
+ 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);
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);
{
buf += sprintf(buf, "startBlock......... %d\n", dev->startBlock);
buf += sprintf(buf, "endBlock........... %d\n", dev->endBlock);
+ buf += sprintf(buf, "nDataBytesPerChunk. %d\n", dev->nDataBytesPerChunk);
buf += sprintf(buf, "chunkGroupBits..... %d\n", dev->chunkGroupBits);
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, "blocksInCheckpoint. %d\n", dev->blocksInCheckpoint);
buf += sprintf(buf, "nTnodesCreated..... %d\n", dev->nTnodesCreated);
buf += sprintf(buf, "nFreeTnodes........ %d\n", dev->nFreeTnodes);
buf += sprintf(buf, "nObjectsCreated.... %d\n", dev->nObjectsCreated);
sprintf(buf, "passiveGCs......... %d\n",
dev->passiveGarbageCollections);
buf += sprintf(buf, "nRetriedWrites..... %d\n", dev->nRetriedWrites);
+ buf += sprintf(buf, "nShortOpCaches..... %d\n", dev->nShortOpCaches);
buf += sprintf(buf, "nRetireBlocks...... %d\n", dev->nRetiredBlocks);
buf += sprintf(buf, "eccFixed........... %d\n", dev->eccFixed);
buf += sprintf(buf, "eccUnfixed......... %d\n", dev->eccUnfixed);
/**
* Set the verbosity of the warnings and error messages.
*
+ * Note that the names can only be a..z or _ with the current code.
*/
static struct {
{"bad_blocks", YAFFS_TRACE_BAD_BLOCKS},
{"buffers", YAFFS_TRACE_BUFFERS},
{"bug", YAFFS_TRACE_BUG},
+ {"checkpt", YAFFS_TRACE_CHECKPOINT},
{"deletion", YAFFS_TRACE_DELETION},
{"erase", YAFFS_TRACE_ERASE},
{"error", YAFFS_TRACE_ERROR},
{"scan_debug", YAFFS_TRACE_SCAN_DEBUG},
{"scan", YAFFS_TRACE_SCAN},
{"tracing", YAFFS_TRACE_TRACING},
+
+ {"verify", YAFFS_TRACE_VERIFY},
+ {"verify_nand", YAFFS_TRACE_VERIFY_NAND},
+ {"verify_full", YAFFS_TRACE_VERIFY_FULL},
+ {"verify_all", YAFFS_TRACE_VERIFY_ALL},
+
{"write", YAFFS_TRACE_WRITE},
{"all", 0xffffffff},
{"none", 0},
{NULL, 0},
};
+#define MAX_MASK_NAME_LENGTH 40
static int yaffs_proc_write(struct file *file, const char *buf,
unsigned long count, void *data)
{
unsigned rg = 0, mask_bitfield;
- char *end, *mask_name;
+ char *end;
+ char *mask_name;
+ const char *x;
+ char substring[MAX_MASK_NAME_LENGTH+1];
int i;
int done = 0;
int add, len = 0;
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;
+ (*x == '_' || (*x >='a' && *x <= 'z')) &&
+ i <MAX_MASK_NAME_LENGTH; x++, i++, pos++)
+ substring[i] = *x;
+ substring[i] = '\0';
for (i = 0; mask_flags[i].mask_name != NULL; i++) {
- len = strlen(mask_flags[i].mask_name);
- if (strncmp(buf + pos, mask_flags[i].mask_name, len) == 0) {
+ if(strcmp(substring,mask_flags[i].mask_name) == 0){
mask_name = mask_flags[i].mask_name;
mask_bitfield = mask_flags[i].mask_bitfield;
done = 0;
}
if (mask_name != NULL) {
- pos += len;
done = 0;
switch(add) {
case '-':
}
yaffs_traceMask = rg | YAFFS_TRACE_ALWAYS;
-
+
+ printk("new trace = 0x%08X\n",yaffs_traceMask);
+
if (rg & YAFFS_TRACE_ALWAYS) {
for (i = 0; mask_flags[i].mask_name != NULL; i++) {
char flag;
projects / yaffs2.git / blobdiff