* 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 1.60 2007-05-15 20:07:40 charles Exp $";
+ "$Id: yaffs_fs.c,v 1.66 2008-05-05 07:58:58 charles Exp $";
extern const char *yaffs_guts_c_version;
#include <linux/version.h>
#include <linux/string.h>
#include <linux/ctype.h>
+#include "asm/div64.h"
+
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
#include <linux/statfs.h> /* Added NCB 15-8-2003 */
#include "yportenv.h"
#include "yaffs_guts.h"
-unsigned yaffs_traceMask = YAFFS_TRACE_BAD_BLOCKS
- /* | 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 :
break;
}
+ inode->i_flags |= S_NOATIME;
+
inode->i_ino = obj->objectId;
inode->i_mode = obj->yst_mode;
inode->i_uid = obj->yst_uid;
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,
buf->f_type = YAFFS_MAGIC;
buf->f_bsize = sb->s_blocksize;
buf->f_namelen = 255;
- if (sb->s_blocksize > dev->nDataBytesPerChunk) {
+
+ if(dev->nDataBytesPerChunk & (dev->nDataBytesPerChunk - 1)){
+ /* Do this if chunk size is not a power of 2 */
+
+ uint64_t bytesInDev;
+ uint64_t bytesFree;
- buf->f_blocks =
- (dev->endBlock - dev->startBlock +
- 1) * dev->nChunksPerBlock / (sb->s_blocksize /
- dev->nDataBytesPerChunk);
- buf->f_bfree =
- yaffs_GetNumberOfFreeChunks(dev) / (sb->s_blocksize /
- dev->nDataBytesPerChunk);
- } else {
+ bytesInDev = ((uint64_t)((dev->endBlock - dev->startBlock +1))) *
+ ((uint64_t)(dev->nChunksPerBlock * dev->nDataBytesPerChunk));
+
+ do_div(bytesInDev,sb->s_blocksize); /* bytesInDev becomes the number of blocks */
+ buf->f_blocks = bytesInDev;
+ bytesFree = ((uint64_t)(yaffs_GetNumberOfFreeChunks(dev))) *
+ ((uint64_t)(dev->nDataBytesPerChunk));
+
+ do_div(bytesFree,sb->s_blocksize);
+
+ buf->f_bfree = bytesFree;
+
+ } else if (sb->s_blocksize > dev->nDataBytesPerChunk) {
+
buf->f_blocks =
- (dev->endBlock - dev->startBlock +
- 1) * dev->nChunksPerBlock * (dev->nDataBytesPerChunk /
- sb->s_blocksize);
- buf->f_bfree =
- yaffs_GetNumberOfFreeChunks(dev) * (dev->nDataBytesPerChunk /
- sb->s_blocksize);
+ (dev->endBlock - dev->startBlock + 1) *
+ dev->nChunksPerBlock /
+ (sb->s_blocksize / dev->nDataBytesPerChunk);
+ buf->f_bfree =
+ yaffs_GetNumberOfFreeChunks(dev) /
+ (sb->s_blocksize / dev->nDataBytesPerChunk);
+ } else {
+ buf->f_blocks =
+ (dev->endBlock - dev->startBlock + 1) *
+ dev->nChunksPerBlock *
+ (dev->nDataBytesPerChunk / sb->s_blocksize);
+
+ buf->f_bfree =
+ yaffs_GetNumberOfFreeChunks(dev) *
+ (dev->nDataBytesPerChunk / sb->s_blocksize);
}
+
+
buf->f_files = 0;
buf->f_ffree = 0;
buf->f_bavail = buf->f_bfree;
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,
+ 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)
{
T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_put_super\n"));
yaffs_GrossLock(dev);
-
+
yaffs_FlushEntireDeviceCache(dev);
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;
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;
}
options_str++;
}
-
+
if(!strcmp(cur_opt,"inband-tags"))
options->inband_tags = 1;
else if(!strcmp(cur_opt,"no-cache"))
printk(KERN_INFO "yaffs: Bad mount option \"%s\"\n",cur_opt);
error = 1;
}
-
+
}
return error;
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_flags |= MS_NOATIME;
if (!sb)
printk(KERN_INFO "yaffs: sb is NULL\n");
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;
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 (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
- mtd->writesize >= 2048) {
-#else
- mtd->oobblock >= 2048) {
-#endif
+ if (yaffsVersion == 1 &&
+ WRITE_SIZE(mtd) >= 2048) {
T(YAFFS_TRACE_ALWAYS,("yaffs: auto selecting yaffs2\n"));
yaffsVersion = 2;
- }
-
+ }
+
/* Added NCB 26/5/2006 for completeness */
if (yaffsVersion == 2 &&
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
- mtd->writesize == 512) {
-#else
- mtd->oobblock == 512) {
-#endif
+ !options.inband_tags &&
+ WRITE_SIZE(mtd) == 512){
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_MIN_YAFFS2_CHUNK_SIZE ||
-#else
- if (mtd->oobblock < YAFFS_MIN_YAFFS2_CHUNK_SIZE ||
-#endif
- mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) {
+ if ((WRITE_SIZE(mtd) < YAFFS_MIN_YAFFS2_CHUNK_SIZE ||
+ mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) &&
+ !options.inband_tags) {
T(YAFFS_TRACE_ALWAYS,
("yaffs: MTD device does not have the "
"right page sizes\n"));
dev->startBlock = 0;
dev->endBlock = nBlocks - 1;
dev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK;
- dev->nDataBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
+ dev->totalBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
dev->nReservedBlocks = 5;
dev->nShortOpCaches = (options.no_cache) ? 0 : 10;
+ dev->inbandTags = options.inband_tags;
/* ... and the functions. */
if (yaffsVersion == 2) {
dev->spareBuffer = YMALLOC(mtd->oobsize);
dev->isYaffs2 = 1;
#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
- dev->nDataBytesPerChunk = mtd->writesize;
+ dev->totalBytesPerChunk = mtd->writesize;
dev->nChunksPerBlock = mtd->erasesize / mtd->writesize;
#else
- dev->nDataBytesPerChunk = mtd->oobblock;
+ dev->totalBytesPerChunk = mtd->oobblock;
dev->nChunksPerBlock = mtd->erasesize / mtd->oobblock;
#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->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, "totalBytesPerChunk. %d\n", dev->totalBytesPerChunk);
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, "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);
buf += sprintf(buf, "nPageReads......... %d\n", dev->nPageReads);
buf += sprintf(buf, "nBlockErasures..... %d\n", dev->nBlockErasures);
buf += sprintf(buf, "nGCCopies.......... %d\n", dev->nGCCopies);
- buf +=
- sprintf(buf, "garbageCollections. %d\n", dev->garbageCollections);
- buf +=
- sprintf(buf, "passiveGCs......... %d\n",
+ buf += sprintf(buf, "garbageCollections. %d\n", dev->garbageCollections);
+ buf += sprintf(buf, "passiveGCs......... %d\n",
dev->passiveGarbageCollections);
buf += sprintf(buf, "nRetriedWrites..... %d\n", dev->nRetriedWrites);
buf += sprintf(buf, "nShortOpCaches..... %d\n", dev->nShortOpCaches);
sprintf(buf, "nBackgroudDeletions %d\n", dev->nBackgroundDeletions);
buf += sprintf(buf, "useNANDECC......... %d\n", dev->useNANDECC);
buf += sprintf(buf, "isYaffs2........... %d\n", dev->isYaffs2);
+ buf += sprintf(buf, "inbandTags......... %d\n", dev->inbandTags);
return 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;
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 <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;
}
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