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Diffstat (limited to 'fs/jffs2/write.c')
-rw-r--r--fs/jffs2/write.c85
1 files changed, 39 insertions, 46 deletions
diff --git a/fs/jffs2/write.c b/fs/jffs2/write.c
index 4462541d11f8..0e12b7561b71 100644
--- a/fs/jffs2/write.c
+++ b/fs/jffs2/write.c
@@ -56,12 +56,15 @@ int jffs2_do_new_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint
/* jffs2_write_dnode - given a raw_inode, allocate a full_dnode for it,
write it to the flash, link it into the existing inode/fragment list */
-struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_raw_inode *ri, const unsigned char *data, uint32_t datalen, uint32_t flash_ofs, int alloc_mode)
+struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
+ struct jffs2_raw_inode *ri, const unsigned char *data,
+ uint32_t datalen, int alloc_mode)
{
struct jffs2_raw_node_ref *raw;
struct jffs2_full_dnode *fn;
size_t retlen;
+ uint32_t flash_ofs;
struct kvec vecs[2];
int ret;
int retried = 0;
@@ -77,8 +80,6 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
vecs[1].iov_base = (unsigned char *)data;
vecs[1].iov_len = datalen;
- jffs2_dbg_prewrite_paranoia_check(c, flash_ofs, vecs[0].iov_len + vecs[1].iov_len);
-
if (je32_to_cpu(ri->totlen) != sizeof(*ri) + datalen) {
printk(KERN_WARNING "jffs2_write_dnode: ri->totlen (0x%08x) != sizeof(*ri) (0x%08zx) + datalen (0x%08x)\n", je32_to_cpu(ri->totlen), sizeof(*ri), datalen);
}
@@ -102,7 +103,9 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
retry:
fn->raw = raw;
- raw->flash_offset = flash_ofs;
+ raw->flash_offset = flash_ofs = write_ofs(c);
+
+ jffs2_dbg_prewrite_paranoia_check(c, flash_ofs, vecs[0].iov_len + vecs[1].iov_len);
if ((alloc_mode!=ALLOC_GC) && (je32_to_cpu(ri->version) < f->highest_version)) {
BUG_ON(!retried);
@@ -122,16 +125,13 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
/* Mark the space as dirtied */
if (retlen) {
- /* Doesn't belong to any inode */
- raw->next_in_ino = NULL;
-
/* Don't change raw->size to match retlen. We may have
written the node header already, and only the data will
seem corrupted, in which case the scan would skip over
any node we write before the original intended end of
this node */
raw->flash_offset |= REF_OBSOLETE;
- jffs2_add_physical_node_ref(c, raw, PAD(sizeof(*ri)+datalen));
+ jffs2_add_physical_node_ref(c, raw, PAD(sizeof(*ri)+datalen), NULL);
jffs2_mark_node_obsolete(c, raw);
} else {
printk(KERN_NOTICE "Not marking the space at 0x%08x as dirty because the flash driver returned retlen zero\n", raw->flash_offset);
@@ -150,19 +150,20 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
jffs2_dbg_acct_paranoia_check(c, jeb);
if (alloc_mode == ALLOC_GC) {
- ret = jffs2_reserve_space_gc(c, sizeof(*ri) + datalen, &flash_ofs,
- &dummy, JFFS2_SUMMARY_INODE_SIZE);
+ ret = jffs2_reserve_space_gc(c, sizeof(*ri) + datalen, &dummy,
+ JFFS2_SUMMARY_INODE_SIZE);
} else {
/* Locking pain */
up(&f->sem);
jffs2_complete_reservation(c);
- ret = jffs2_reserve_space(c, sizeof(*ri) + datalen, &flash_ofs,
- &dummy, alloc_mode, JFFS2_SUMMARY_INODE_SIZE);
+ ret = jffs2_reserve_space(c, sizeof(*ri) + datalen, &dummy,
+ alloc_mode, JFFS2_SUMMARY_INODE_SIZE);
down(&f->sem);
}
if (!ret) {
+ flash_ofs = write_ofs(c);
D1(printk(KERN_DEBUG "Allocated space at 0x%08x to retry failed write.\n", flash_ofs));
jffs2_dbg_acct_sanity_check(c,jeb);
@@ -189,13 +190,7 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
} else {
raw->flash_offset |= REF_NORMAL;
}
- jffs2_add_physical_node_ref(c, raw, PAD(sizeof(*ri)+datalen));
-
- /* Link into per-inode list */
- spin_lock(&c->erase_completion_lock);
- raw->next_in_ino = f->inocache->nodes;
- f->inocache->nodes = raw;
- spin_unlock(&c->erase_completion_lock);
+ jffs2_add_physical_node_ref(c, raw, PAD(sizeof(*ri)+datalen), f->inocache);
D1(printk(KERN_DEBUG "jffs2_write_dnode wrote node at 0x%08x(%d) with dsize 0x%x, csize 0x%x, node_crc 0x%08x, data_crc 0x%08x, totlen 0x%08x\n",
flash_ofs, ref_flags(raw), je32_to_cpu(ri->dsize),
@@ -209,12 +204,15 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
return fn;
}
-struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_raw_dirent *rd, const unsigned char *name, uint32_t namelen, uint32_t flash_ofs, int alloc_mode)
+struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
+ struct jffs2_raw_dirent *rd, const unsigned char *name,
+ uint32_t namelen, int alloc_mode)
{
struct jffs2_raw_node_ref *raw;
struct jffs2_full_dirent *fd;
size_t retlen;
struct kvec vecs[2];
+ uint32_t flash_ofs = write_ofs(c);
int retried = 0;
int ret;
@@ -275,9 +273,8 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
sizeof(*rd)+namelen, flash_ofs, ret, retlen);
/* Mark the space as dirtied */
if (retlen) {
- raw->next_in_ino = NULL;
raw->flash_offset |= REF_OBSOLETE;
- jffs2_add_physical_node_ref(c, raw, PAD(sizeof(*rd)+namelen));
+ jffs2_add_physical_node_ref(c, raw, PAD(sizeof(*rd)+namelen), NULL);
jffs2_mark_node_obsolete(c, raw);
} else {
printk(KERN_NOTICE "Not marking the space at 0x%08x as dirty because the flash driver returned retlen zero\n", raw->flash_offset);
@@ -296,19 +293,20 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
jffs2_dbg_acct_paranoia_check(c, jeb);
if (alloc_mode == ALLOC_GC) {
- ret = jffs2_reserve_space_gc(c, sizeof(*rd) + namelen, &flash_ofs,
- &dummy, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
+ ret = jffs2_reserve_space_gc(c, sizeof(*rd) + namelen, &dummy,
+ JFFS2_SUMMARY_DIRENT_SIZE(namelen));
} else {
/* Locking pain */
up(&f->sem);
jffs2_complete_reservation(c);
- ret = jffs2_reserve_space(c, sizeof(*rd) + namelen, &flash_ofs,
- &dummy, alloc_mode, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
+ ret = jffs2_reserve_space(c, sizeof(*rd) + namelen, &dummy,
+ alloc_mode, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
down(&f->sem);
}
if (!ret) {
+ flash_ofs = write_ofs(c);
D1(printk(KERN_DEBUG "Allocated space at 0x%08x to retry failed write.\n", flash_ofs));
jffs2_dbg_acct_sanity_check(c,jeb);
jffs2_dbg_acct_paranoia_check(c, jeb);
@@ -323,12 +321,7 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
}
/* Mark the space used */
raw->flash_offset |= REF_PRISTINE;
- jffs2_add_physical_node_ref(c, raw, PAD(sizeof(*rd)+namelen));
-
- spin_lock(&c->erase_completion_lock);
- raw->next_in_ino = f->inocache->nodes;
- f->inocache->nodes = raw;
- spin_unlock(&c->erase_completion_lock);
+ jffs2_add_physical_node_ref(c, raw, PAD(sizeof(*rd)+namelen), f->inocache);
if (retried) {
jffs2_dbg_acct_sanity_check(c,NULL);
@@ -354,14 +347,14 @@ int jffs2_write_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
struct jffs2_full_dnode *fn;
unsigned char *comprbuf = NULL;
uint16_t comprtype = JFFS2_COMPR_NONE;
- uint32_t phys_ofs, alloclen;
+ uint32_t alloclen;
uint32_t datalen, cdatalen;
int retried = 0;
retry:
D2(printk(KERN_DEBUG "jffs2_commit_write() loop: 0x%x to write to 0x%x\n", writelen, offset));
- ret = jffs2_reserve_space(c, sizeof(*ri) + JFFS2_MIN_DATA_LEN, &phys_ofs,
+ ret = jffs2_reserve_space(c, sizeof(*ri) + JFFS2_MIN_DATA_LEN,
&alloclen, ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
if (ret) {
D1(printk(KERN_DEBUG "jffs2_reserve_space returned %d\n", ret));
@@ -389,7 +382,7 @@ int jffs2_write_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
ri->data_crc = cpu_to_je32(crc32(0, comprbuf, cdatalen));
- fn = jffs2_write_dnode(c, f, ri, comprbuf, cdatalen, phys_ofs, ALLOC_NORETRY);
+ fn = jffs2_write_dnode(c, f, ri, comprbuf, cdatalen, ALLOC_NORETRY);
jffs2_free_comprbuf(comprbuf, buf);
@@ -443,13 +436,13 @@ int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, str
struct jffs2_raw_dirent *rd;
struct jffs2_full_dnode *fn;
struct jffs2_full_dirent *fd;
- uint32_t alloclen, phys_ofs;
+ uint32_t alloclen;
int ret;
/* Try to reserve enough space for both node and dirent.
* Just the node will do for now, though
*/
- ret = jffs2_reserve_space(c, sizeof(*ri), &phys_ofs, &alloclen, ALLOC_NORMAL,
+ ret = jffs2_reserve_space(c, sizeof(*ri), &alloclen, ALLOC_NORMAL,
JFFS2_SUMMARY_INODE_SIZE);
D1(printk(KERN_DEBUG "jffs2_do_create(): reserved 0x%x bytes\n", alloclen));
if (ret) {
@@ -460,7 +453,7 @@ int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, str
ri->data_crc = cpu_to_je32(0);
ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
- fn = jffs2_write_dnode(c, f, ri, NULL, 0, phys_ofs, ALLOC_NORMAL);
+ fn = jffs2_write_dnode(c, f, ri, NULL, 0, ALLOC_NORMAL);
D1(printk(KERN_DEBUG "jffs2_do_create created file with mode 0x%x\n",
jemode_to_cpu(ri->mode)));
@@ -479,7 +472,7 @@ int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, str
up(&f->sem);
jffs2_complete_reservation(c);
- ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen,
+ ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &alloclen,
ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
if (ret) {
@@ -511,7 +504,7 @@ int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, str
rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
rd->name_crc = cpu_to_je32(crc32(0, name, namelen));
- fd = jffs2_write_dirent(c, dir_f, rd, name, namelen, phys_ofs, ALLOC_NORMAL);
+ fd = jffs2_write_dirent(c, dir_f, rd, name, namelen, ALLOC_NORMAL);
jffs2_free_raw_dirent(rd);
@@ -540,7 +533,7 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
{
struct jffs2_raw_dirent *rd;
struct jffs2_full_dirent *fd;
- uint32_t alloclen, phys_ofs;
+ uint32_t alloclen;
int ret;
if (1 /* alternative branch needs testing */ ||
@@ -551,7 +544,7 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
if (!rd)
return -ENOMEM;
- ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen,
+ ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &alloclen,
ALLOC_DELETION, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
if (ret) {
jffs2_free_raw_dirent(rd);
@@ -575,7 +568,7 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
rd->name_crc = cpu_to_je32(crc32(0, name, namelen));
- fd = jffs2_write_dirent(c, dir_f, rd, name, namelen, phys_ofs, ALLOC_DELETION);
+ fd = jffs2_write_dirent(c, dir_f, rd, name, namelen, ALLOC_DELETION);
jffs2_free_raw_dirent(rd);
@@ -654,14 +647,14 @@ int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint
{
struct jffs2_raw_dirent *rd;
struct jffs2_full_dirent *fd;
- uint32_t alloclen, phys_ofs;
+ uint32_t alloclen;
int ret;
rd = jffs2_alloc_raw_dirent();
if (!rd)
return -ENOMEM;
- ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen,
+ ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &alloclen,
ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
if (ret) {
jffs2_free_raw_dirent(rd);
@@ -687,7 +680,7 @@ int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint
rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
rd->name_crc = cpu_to_je32(crc32(0, name, namelen));
- fd = jffs2_write_dirent(c, dir_f, rd, name, namelen, phys_ofs, ALLOC_NORMAL);
+ fd = jffs2_write_dirent(c, dir_f, rd, name, namelen, ALLOC_NORMAL);
jffs2_free_raw_dirent(rd);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.