*
* Copyright (C) 2001-2003 Red Hat, Inc.
*
- * Created by David Woodhouse <dwmw2@redhat.com>
+ * Created by David Woodhouse <dwmw2@infradead.org>
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: write.c,v 1.75 2003/10/08 11:45:11 dwmw2 Exp $
+ * $Id: write.c,v 1.97 2005/11/07 11:14:42 gleixner Exp $
*
*/
#include <linux/pagemap.h>
#include <linux/mtd/mtd.h>
#include "nodelist.h"
+#include "compr.h"
int jffs2_do_new_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint32_t mode, struct jffs2_raw_inode *ri)
memset(ic, 0, sizeof(*ic));
- init_MUTEX_LOCKED(&f->sem);
f->inocache = ic;
f->inocache->nlink = 1;
f->inocache->nodes = (struct jffs2_raw_node_ref *)f->inocache;
- f->inocache->ino = ++c->highest_ino;
f->inocache->state = INO_STATE_PRESENT;
- ri->ino = cpu_to_je32(f->inocache->ino);
-
- D1(printk(KERN_DEBUG "jffs2_do_new_inode(): Assigned ino# %d\n", f->inocache->ino));
jffs2_add_ino_cache(c, f->inocache);
+ D1(printk(KERN_DEBUG "jffs2_do_new_inode(): Assigned ino# %d\n", f->inocache->ino));
+ ri->ino = cpu_to_je32(f->inocache->ino);
ri->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
ri->nodetype = cpu_to_je16(JFFS2_NODETYPE_INODE);
return 0;
}
-#if CONFIG_JFFS2_FS_DEBUG > 0
-static void writecheck(struct jffs2_sb_info *c, uint32_t ofs)
-{
- unsigned char buf[16];
- size_t retlen;
- int ret, i;
-
- ret = jffs2_flash_read(c, ofs, 16, &retlen, buf);
- if (ret || (retlen != 16)) {
- D1(printk(KERN_DEBUG "read failed or short in writecheck(). ret %d, retlen %zd\n", ret, retlen));
- return;
- }
- ret = 0;
- for (i=0; i<16; i++) {
- if (buf[i] != 0xff)
- ret = 1;
- }
- if (ret) {
- printk(KERN_WARNING "ARGH. About to write node to 0x%08x on flash, but there are data already there:\n", ofs);
- printk(KERN_WARNING "0x%08x: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
- ofs,
- buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6], buf[7],
- buf[8], buf[9], buf[10], buf[11], buf[12], buf[13], buf[14], buf[15]);
- }
-}
-#endif
-
-
-/* jffs2_write_dnode - given a raw_inode, allocate a full_dnode for it,
+/* 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;
- struct iovec vecs[2];
+ uint32_t flash_ofs;
+ struct kvec vecs[2];
int ret;
int retried = 0;
unsigned long cnt = 2;
vecs[1].iov_base = (unsigned char *)data;
vecs[1].iov_len = datalen;
- D1(writecheck(c, flash_ofs));
-
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);
}
- raw = jffs2_alloc_raw_node_ref();
- if (!raw)
- return ERR_PTR(-ENOMEM);
-
+
fn = jffs2_alloc_full_dnode();
- if (!fn) {
- jffs2_free_raw_node_ref(raw);
+ if (!fn)
return ERR_PTR(-ENOMEM);
- }
-
- fn->ofs = je32_to_cpu(ri->offset);
- fn->size = je32_to_cpu(ri->dsize);
- fn->frags = 0;
/* check number of valid vecs */
if (!datalen || !data)
cnt = 1;
retry:
- fn->raw = raw;
+ flash_ofs = write_ofs(c);
- raw->flash_offset = flash_ofs;
- raw->totlen = PAD(sizeof(*ri)+datalen);
- raw->next_phys = NULL;
+ 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);
+ D1(printk(KERN_DEBUG "jffs2_write_dnode : dnode_version %d, "
+ "highest version %d -> updating dnode\n",
+ je32_to_cpu(ri->version), f->highest_version));
+ ri->version = cpu_to_je32(++f->highest_version);
+ ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
+ }
ret = jffs2_flash_writev(c, vecs, cnt, flash_ofs, &retlen,
(alloc_mode==ALLOC_GC)?0:f->inocache->ino);
if (ret || (retlen != sizeof(*ri) + datalen)) {
- printk(KERN_NOTICE "Write of %zd bytes at 0x%08x failed. returned %d, retlen %zd\n",
+ printk(KERN_NOTICE "Write of %zd bytes at 0x%08x failed. returned %d, retlen %zd\n",
sizeof(*ri)+datalen, flash_ofs, ret, retlen);
/* 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
+ /* 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
+ any node we write before the original intended end of
this node */
- raw->flash_offset |= REF_OBSOLETE;
- jffs2_add_physical_node_ref(c, raw);
- jffs2_mark_node_obsolete(c, raw);
+ jffs2_add_physical_node_ref(c, flash_ofs | REF_OBSOLETE, PAD(sizeof(*ri)+datalen), NULL);
} else {
- printk(KERN_NOTICE "Not marking the space at 0x%08x as dirty because the flash driver returned retlen zero\n", raw->flash_offset);
- jffs2_free_raw_node_ref(raw);
+ printk(KERN_NOTICE "Not marking the space at 0x%08x as dirty because the flash driver returned retlen zero\n", flash_ofs);
}
- if (!retried && alloc_mode != ALLOC_NORETRY && (raw = jffs2_alloc_raw_node_ref())) {
+ if (!retried && alloc_mode != ALLOC_NORETRY) {
/* Try to reallocate space and retry */
uint32_t dummy;
struct jffs2_eraseblock *jeb = &c->blocks[flash_ofs / c->sector_size];
retried = 1;
D1(printk(KERN_DEBUG "Retrying failed write.\n"));
-
- ACCT_SANITY_CHECK(c,jeb);
- D1(ACCT_PARANOIA_CHECK(jeb));
+
+ jffs2_dbg_acct_sanity_check(c,jeb);
+ jffs2_dbg_acct_paranoia_check(c, jeb);
if (alloc_mode == ALLOC_GC) {
- ret = jffs2_reserve_space_gc(c, sizeof(*ri) + datalen, &flash_ofs, &dummy);
+ 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);
+
+ 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));
- ACCT_SANITY_CHECK(c,jeb);
- D1(ACCT_PARANOIA_CHECK(jeb));
+ jffs2_dbg_acct_sanity_check(c,jeb);
+ jffs2_dbg_acct_paranoia_check(c, jeb);
goto retry;
}
D1(printk(KERN_DEBUG "Failed to allocate space to retry failed write: %d!\n", ret));
- jffs2_free_raw_node_ref(raw);
}
/* Release the full_dnode which is now useless, and return */
jffs2_free_full_dnode(fn);
return ERR_PTR(ret?ret:-EIO);
}
/* Mark the space used */
- /* If node covers at least a whole page, or if it starts at the
- beginning of a page and runs to the end of the file, or if
- it's a hole node, mark it REF_PRISTINE, else REF_NORMAL.
+ /* If node covers at least a whole page, or if it starts at the
+ beginning of a page and runs to the end of the file, or if
+ it's a hole node, mark it REF_PRISTINE, else REF_NORMAL.
*/
if ((je32_to_cpu(ri->dsize) >= PAGE_CACHE_SIZE) ||
( ((je32_to_cpu(ri->offset)&(PAGE_CACHE_SIZE-1))==0) &&
(je32_to_cpu(ri->dsize)+je32_to_cpu(ri->offset) == je32_to_cpu(ri->isize)))) {
- raw->flash_offset |= REF_PRISTINE;
+ flash_ofs |= REF_PRISTINE;
} else {
- raw->flash_offset |= REF_NORMAL;
+ flash_ofs |= REF_NORMAL;
}
- jffs2_add_physical_node_ref(c, raw);
-
- /* Link into per-inode list */
- raw->next_in_ino = f->inocache->nodes;
- f->inocache->nodes = raw;
+ fn->raw = jffs2_add_physical_node_ref(c, flash_ofs, PAD(sizeof(*ri)+datalen), f->inocache);
+ fn->ofs = je32_to_cpu(ri->offset);
+ fn->size = je32_to_cpu(ri->dsize);
+ fn->frags = 0;
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),
+ flash_ofs & ~3, flash_ofs & 3, je32_to_cpu(ri->dsize),
je32_to_cpu(ri->csize), je32_to_cpu(ri->node_crc),
je32_to_cpu(ri->data_crc), je32_to_cpu(ri->totlen)));
if (retried) {
- ACCT_SANITY_CHECK(c,NULL);
+ jffs2_dbg_acct_sanity_check(c,NULL);
}
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 iovec vecs[2];
+ struct kvec vecs[2];
+ uint32_t flash_ofs;
int retried = 0;
int ret;
- D1(printk(KERN_DEBUG "jffs2_write_dirent(ino #%u, name at *0x%p \"%s\"->ino #%u, name_crc 0x%08x)\n",
+ D1(printk(KERN_DEBUG "jffs2_write_dirent(ino #%u, name at *0x%p \"%s\"->ino #%u, name_crc 0x%08x)\n",
je32_to_cpu(rd->pino), name, name, je32_to_cpu(rd->ino),
je32_to_cpu(rd->name_crc)));
- D1(writecheck(c, flash_ofs));
D1(if(je32_to_cpu(rd->hdr_crc) != crc32(0, rd, sizeof(struct jffs2_unknown_node)-4)) {
printk(KERN_CRIT "Eep. CRC not correct in jffs2_write_dirent()\n");
BUG();
- }
- );
+ });
vecs[0].iov_base = rd;
vecs[0].iov_len = sizeof(*rd);
vecs[1].iov_base = (unsigned char *)name;
vecs[1].iov_len = namelen;
-
- raw = jffs2_alloc_raw_node_ref();
-
- if (!raw)
- return ERR_PTR(-ENOMEM);
fd = jffs2_alloc_full_dirent(namelen+1);
- if (!fd) {
- jffs2_free_raw_node_ref(raw);
+ if (!fd)
return ERR_PTR(-ENOMEM);
- }
fd->version = je32_to_cpu(rd->version);
fd->ino = je32_to_cpu(rd->ino);
fd->name[namelen]=0;
retry:
- fd->raw = raw;
-
- raw->flash_offset = flash_ofs;
- raw->totlen = PAD(sizeof(*rd)+namelen);
- raw->next_phys = NULL;
+ 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(rd->version) < f->highest_version)) {
+ BUG_ON(!retried);
+ D1(printk(KERN_DEBUG "jffs2_write_dirent : dirent_version %d, "
+ "highest version %d -> updating dirent\n",
+ je32_to_cpu(rd->version), f->highest_version));
+ rd->version = cpu_to_je32(++f->highest_version);
+ fd->version = je32_to_cpu(rd->version);
+ rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
+ }
ret = jffs2_flash_writev(c, vecs, 2, flash_ofs, &retlen,
- (alloc_mode==ALLOC_GC)?0:fd->ino);
+ (alloc_mode==ALLOC_GC)?0:je32_to_cpu(rd->pino));
if (ret || (retlen != sizeof(*rd) + namelen)) {
- printk(KERN_NOTICE "Write of %zd bytes at 0x%08x failed. returned %d, retlen %zd\n",
+ printk(KERN_NOTICE "Write of %zd bytes at 0x%08x failed. returned %d, retlen %zd\n",
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);
- jffs2_mark_node_obsolete(c, raw);
+ jffs2_add_physical_node_ref(c, flash_ofs | REF_OBSOLETE, PAD(sizeof(*rd)+namelen), NULL);
} else {
- printk(KERN_NOTICE "Not marking the space at 0x%08x as dirty because the flash driver returned retlen zero\n", raw->flash_offset);
- jffs2_free_raw_node_ref(raw);
+ printk(KERN_NOTICE "Not marking the space at 0x%08x as dirty because the flash driver returned retlen zero\n", flash_ofs);
}
- if (!retried && (raw = jffs2_alloc_raw_node_ref())) {
+ if (!retried) {
/* Try to reallocate space and retry */
uint32_t dummy;
struct jffs2_eraseblock *jeb = &c->blocks[flash_ofs / c->sector_size];
D1(printk(KERN_DEBUG "Retrying failed write.\n"));
- ACCT_SANITY_CHECK(c,jeb);
- D1(ACCT_PARANOIA_CHECK(jeb));
+ jffs2_dbg_acct_sanity_check(c,jeb);
+ jffs2_dbg_acct_paranoia_check(c, jeb);
if (alloc_mode == ALLOC_GC) {
- ret = jffs2_reserve_space_gc(c, sizeof(*rd) + namelen, &flash_ofs, &dummy);
+ 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);
+
+ 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));
- ACCT_SANITY_CHECK(c,jeb);
- D1(ACCT_PARANOIA_CHECK(jeb));
+ jffs2_dbg_acct_sanity_check(c,jeb);
+ jffs2_dbg_acct_paranoia_check(c, jeb);
goto retry;
}
D1(printk(KERN_DEBUG "Failed to allocate space to retry failed write: %d!\n", ret));
- jffs2_free_raw_node_ref(raw);
}
/* Release the full_dnode which is now useless, and return */
jffs2_free_full_dirent(fd);
return ERR_PTR(ret?ret:-EIO);
}
/* Mark the space used */
- raw->flash_offset |= REF_PRISTINE;
- jffs2_add_physical_node_ref(c, raw);
-
- raw->next_in_ino = f->inocache->nodes;
- f->inocache->nodes = raw;
+ fd->raw = jffs2_add_physical_node_ref(c, flash_ofs | REF_PRISTINE, PAD(sizeof(*rd)+namelen), f->inocache);
if (retried) {
- ACCT_SANITY_CHECK(c,NULL);
+ jffs2_dbg_acct_sanity_check(c,NULL);
}
return fd;
we don't have to go digging in struct inode or its equivalent. It should set:
mode, uid, gid, (starting)isize, atime, ctime, mtime */
int jffs2_write_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
- struct jffs2_raw_inode *ri, unsigned char *buf,
+ struct jffs2_raw_inode *ri, unsigned char *buf,
uint32_t offset, uint32_t writelen, uint32_t *retlen)
{
int ret = 0;
D1(printk(KERN_DEBUG "jffs2_write_inode_range(): Ino #%u, ofs 0x%x, len 0x%x\n",
f->inocache->ino, offset, writelen));
-
+
while(writelen) {
struct jffs2_full_dnode *fn;
unsigned char *comprbuf = NULL;
- unsigned char comprtype = JFFS2_COMPR_NONE;
- uint32_t phys_ofs, alloclen;
+ uint16_t comprtype = JFFS2_COMPR_NONE;
+ 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, &alloclen, ALLOC_NORMAL);
+ 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));
break;
}
down(&f->sem);
- datalen = writelen;
- cdatalen = min_t(uint32_t, alloclen - sizeof(*ri), writelen);
+ datalen = min_t(uint32_t, writelen, PAGE_CACHE_SIZE - (offset & (PAGE_CACHE_SIZE-1)));
+ cdatalen = min_t(uint32_t, alloclen - sizeof(*ri), datalen);
- comprbuf = kmalloc(cdatalen, GFP_KERNEL);
- if (comprbuf) {
- comprtype = jffs2_compress(buf, comprbuf, &datalen, &cdatalen);
- }
- if (comprtype == JFFS2_COMPR_NONE) {
- /* Either compression failed, or the allocation of comprbuf failed */
- if (comprbuf)
- kfree(comprbuf);
- comprbuf = buf;
- datalen = cdatalen;
- }
- /* Now comprbuf points to the data to be written, be it compressed or not.
- comprtype holds the compression type, and comprtype == JFFS2_COMPR_NONE means
- that the comprbuf doesn't need to be kfree()d.
- */
+ comprtype = jffs2_compress(c, f, buf, &comprbuf, &datalen, &cdatalen);
ri->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
ri->nodetype = cpu_to_je16(JFFS2_NODETYPE_INODE);
ri->offset = cpu_to_je32(offset);
ri->csize = cpu_to_je32(cdatalen);
ri->dsize = cpu_to_je32(datalen);
- ri->compr = comprtype;
+ ri->compr = comprtype & 0xff;
+ ri->usercompr = (comprtype >> 8 ) & 0xff;
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);
- if (comprtype != JFFS2_COMPR_NONE)
- kfree(comprbuf);
+ jffs2_free_comprbuf(comprbuf, buf);
if (IS_ERR(fn)) {
ret = PTR_ERR(fn);
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
+ /* 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) {
up(&f->sem);
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)));
jffs2_complete_reservation(c);
return PTR_ERR(fn);
}
- /* No data here. Only a metadata node, which will be
+ /* No data here. Only a metadata node, which will be
obsoleted by the first data write
*/
f->metadata = fn;
up(&f->sem);
jffs2_complete_reservation(c);
- ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen, ALLOC_NORMAL);
-
+ ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &alloclen,
+ ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
+
if (ret) {
/* Eep. */
D1(printk(KERN_DEBUG "jffs2_reserve_space() for dirent failed\n"));
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);
-
+
if (IS_ERR(fd)) {
- /* dirent failed to write. Delete the inode normally
+ /* dirent failed to write. Delete the inode normally
as if it were the final unlink() */
jffs2_complete_reservation(c);
up(&dir_f->sem);
int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
- const char *name, int namelen, struct jffs2_inode_info *dead_f)
+ const char *name, int namelen, struct jffs2_inode_info *dead_f,
+ uint32_t time)
{
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;
+ if (1 /* alternative branch needs testing */ ||
+ !jffs2_can_mark_obsolete(c)) {
+ /* We can't mark stuff obsolete on the medium. We need to write a deletion dirent */
+
+ rd = jffs2_alloc_raw_dirent();
+ if (!rd)
+ return -ENOMEM;
+
+ ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &alloclen,
+ ALLOC_DELETION, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
+ if (ret) {
+ jffs2_free_raw_dirent(rd);
+ return ret;
+ }
+
+ down(&dir_f->sem);
+
+ /* Build a deletion node */
+ rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
+ rd->nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT);
+ rd->totlen = cpu_to_je32(sizeof(*rd) + namelen);
+ rd->hdr_crc = cpu_to_je32(crc32(0, rd, sizeof(struct jffs2_unknown_node)-4));
+
+ rd->pino = cpu_to_je32(dir_f->inocache->ino);
+ rd->version = cpu_to_je32(++dir_f->highest_version);
+ rd->ino = cpu_to_je32(0);
+ rd->mctime = cpu_to_je32(time);
+ rd->nsize = namelen;
+ rd->type = DT_UNKNOWN;
+ 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, ALLOC_DELETION);
- ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen, ALLOC_DELETION);
- if (ret) {
jffs2_free_raw_dirent(rd);
- return ret;
- }
- down(&dir_f->sem);
+ if (IS_ERR(fd)) {
+ jffs2_complete_reservation(c);
+ up(&dir_f->sem);
+ return PTR_ERR(fd);
+ }
- /* Build a deletion node */
- rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
- rd->nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT);
- rd->totlen = cpu_to_je32(sizeof(*rd) + namelen);
- rd->hdr_crc = cpu_to_je32(crc32(0, rd, sizeof(struct jffs2_unknown_node)-4));
+ /* File it. This will mark the old one obsolete. */
+ jffs2_add_fd_to_list(c, fd, &dir_f->dents);
+ up(&dir_f->sem);
+ } else {
+ struct jffs2_full_dirent **prev = &dir_f->dents;
+ uint32_t nhash = full_name_hash(name, namelen);
- rd->pino = cpu_to_je32(dir_f->inocache->ino);
- rd->version = cpu_to_je32(++dir_f->highest_version);
- rd->ino = cpu_to_je32(0);
- rd->mctime = cpu_to_je32(get_seconds());
- rd->nsize = namelen;
- rd->type = DT_UNKNOWN;
- rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
- rd->name_crc = cpu_to_je32(crc32(0, name, namelen));
+ down(&dir_f->sem);
- fd = jffs2_write_dirent(c, dir_f, rd, name, namelen, phys_ofs, ALLOC_DELETION);
-
- jffs2_free_raw_dirent(rd);
+ while ((*prev) && (*prev)->nhash <= nhash) {
+ if ((*prev)->nhash == nhash &&
+ !memcmp((*prev)->name, name, namelen) &&
+ !(*prev)->name[namelen]) {
+ struct jffs2_full_dirent *this = *prev;
- if (IS_ERR(fd)) {
- jffs2_complete_reservation(c);
+ D1(printk(KERN_DEBUG "Marking old dirent node (ino #%u) @%08x obsolete\n",
+ this->ino, ref_offset(this->raw)));
+
+ *prev = this->next;
+ jffs2_mark_node_obsolete(c, (this->raw));
+ jffs2_free_full_dirent(this);
+ break;
+ }
+ prev = &((*prev)->next);
+ }
up(&dir_f->sem);
- return PTR_ERR(fd);
}
- /* File it. This will mark the old one obsolete. */
- jffs2_add_fd_to_list(c, fd, &dir_f->dents);
-
- up(&dir_f->sem);
-
/* dead_f is NULL if this was a rename not a real unlink */
/* Also catch the !f->inocache case, where there was a dirent
pointing to an inode which didn't exist. */
- if (dead_f && dead_f->inocache) {
+ if (dead_f && dead_f->inocache) {
down(&dead_f->sem);
- while (dead_f->dents) {
- /* There can be only deleted ones */
- fd = dead_f->dents;
-
- dead_f->dents = fd->next;
-
- if (fd->ino) {
- printk(KERN_WARNING "Deleting inode #%u with active dentry \"%s\"->ino #%u\n",
- dead_f->inocache->ino, fd->name, fd->ino);
- } else {
- D1(printk(KERN_DEBUG "Removing deletion dirent for \"%s\" from dir ino #%u\n", fd->name, dead_f->inocache->ino));
+ if (S_ISDIR(OFNI_EDONI_2SFFJ(dead_f)->i_mode)) {
+ while (dead_f->dents) {
+ /* There can be only deleted ones */
+ fd = dead_f->dents;
+
+ dead_f->dents = fd->next;
+
+ if (fd->ino) {
+ printk(KERN_WARNING "Deleting inode #%u with active dentry \"%s\"->ino #%u\n",
+ dead_f->inocache->ino, fd->name, fd->ino);
+ } else {
+ D1(printk(KERN_DEBUG "Removing deletion dirent for \"%s\" from dir ino #%u\n",
+ fd->name, dead_f->inocache->ino));
+ }
+ jffs2_mark_node_obsolete(c, fd->raw);
+ jffs2_free_full_dirent(fd);
}
- jffs2_mark_node_obsolete(c, fd->raw);
- jffs2_free_full_dirent(fd);
}
dead_f->inocache->nlink--;
}
-int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint32_t ino, uint8_t type, const char *name, int namelen)
+int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint32_t ino, uint8_t type, const char *name, int namelen, uint32_t time)
{
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, ALLOC_NORMAL);
+ ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &alloclen,
+ ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
if (ret) {
jffs2_free_raw_dirent(rd);
return ret;
}
-
+
down(&dir_f->sem);
/* Build a deletion node */
rd->pino = cpu_to_je32(dir_f->inocache->ino);
rd->version = cpu_to_je32(++dir_f->highest_version);
rd->ino = cpu_to_je32(ino);
- rd->mctime = cpu_to_je32(get_seconds());
+ rd->mctime = cpu_to_je32(time);
rd->nsize = namelen;
rd->type = type;
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);
if (IS_ERR(fd)) {
git://git.onelab.eu / linux-2.6.git / blobdiff