ret = jffs2_flash_writev(c, vecs, cnt, flash_ofs, &retlen,
(alloc_mode==ALLOC_GC)?0:f->inocache->ino);
if (ret || (retlen != sizeof(*ri) + datalen)) {
pr_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) { /* 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 */
jffs2_add_physical_node_ref(c, flash_ofs | REF_OBSOLETE, PAD(sizeof(*ri)+datalen), NULL);
} else {
pr_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) { /* Try to reallocate space and retry */
uint32_t dummy; struct jffs2_eraseblock *jeb = &c->blocks[flash_ofs / c->sector_size];
goto retry;
}
jffs2_dbg(1, "Failed to allocate space to retry failed write: %d!\n",
ret);
} /* 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 ((je32_to_cpu(ri->dsize) >= PAGE_SIZE) ||
( ((je32_to_cpu(ri->offset)&(PAGE_SIZE-1))==0) &&
(je32_to_cpu(ri->dsize)+je32_to_cpu(ri->offset) == je32_to_cpu(ri->isize)))) {
flash_ofs |= REF_PRISTINE;
} else {
flash_ofs |= REF_NORMAL;
}
fn->raw = jffs2_add_physical_node_ref(c, flash_ofs, PAD(sizeof(*ri)+datalen), f->inocache); if (IS_ERR(fn->raw)) { void *hold_err = fn->raw; /* Release the full_dnode which is now useless, and return */
jffs2_free_full_dnode(fn); return ERR_CAST(hold_err);
}
fn->ofs = je32_to_cpu(ri->offset);
fn->size = je32_to_cpu(ri->dsize);
fn->frags = 0;
jffs2_dbg(1, "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 & ~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) {
jffs2_dbg_acct_sanity_check(c,NULL);
}
jffs2_dbg(1, "%s(ino #%u, name at *0x%p \"%s\"->ino #%u, name_crc 0x%08x)\n",
__func__,
je32_to_cpu(rd->pino), name, name, je32_to_cpu(rd->ino),
je32_to_cpu(rd->name_crc));
D1(if(je32_to_cpu(rd->hdr_crc) != crc32(0, rd, sizeof(struct jffs2_unknown_node)-4)) {
pr_crit("Eep. CRC not correct in jffs2_write_dirent()\n");
BUG();
});
if (strnlen(name, namelen) != namelen) { /* This should never happen, but seems to have done on at least one
occasion: https://dev.laptop.org/ticket/4184 */
pr_crit("Error in jffs2_write_dirent() -- name contains zero bytes!\n");
pr_crit("Directory inode #%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));
WARN_ON(1); return ERR_PTR(-EIO);
}
ret = jffs2_flash_writev(c, vecs, 2, flash_ofs, &retlen,
(alloc_mode==ALLOC_GC)?0:je32_to_cpu(rd->pino)); if (ret || (retlen != sizeof(*rd) + namelen)) {
pr_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) {
jffs2_add_physical_node_ref(c, flash_ofs | REF_OBSOLETE, PAD(sizeof(*rd)+namelen), NULL);
} else {
pr_notice("Not marking the space at 0x%08x as dirty because the flash driver returned retlen zero\n",
flash_ofs);
} if (!retried) { /* Try to reallocate space and retry */
uint32_t dummy; struct jffs2_eraseblock *jeb = &c->blocks[flash_ofs / c->sector_size];
if (!ret) {
flash_ofs = write_ofs(c);
jffs2_dbg(1, "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); goto retry;
}
jffs2_dbg(1, "Failed to allocate space to retry failed write: %d!\n",
ret);
} /* 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 */
fd->raw = jffs2_add_physical_node_ref(c, flash_ofs | dirent_node_state(rd),
PAD(sizeof(*rd)+namelen), f->inocache); if (IS_ERR(fd->raw)) { void *hold_err = fd->raw; /* Release the full_dirent which is now useless, and return */
jffs2_free_full_dirent(fd); return ERR_CAST(hold_err);
}
if (retried) {
jffs2_dbg_acct_sanity_check(c,NULL);
}
return fd;
}
/* The OS-specific code fills in the metadata in the jffs2_raw_inode for us, so that 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, unsignedchar *buf,
uint32_t offset, uint32_t writelen, uint32_t *retlen)
{ int ret = 0;
uint32_t writtenlen = 0;
/* 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), &alloclen, ALLOC_NORMAL,
JFFS2_SUMMARY_INODE_SIZE);
jffs2_dbg(1, "%s(): reserved 0x%x bytes\n", __func__, alloclen); if (ret) return ret;
jffs2_dbg(1, "jffs2_do_create created file with mode 0x%x\n",
jemode_to_cpu(ri->mode));
if (IS_ERR(fn)) {
jffs2_dbg(1, "jffs2_write_dnode() failed\n"); /* Eeek. Wave bye bye */
mutex_unlock(&f->sem);
jffs2_complete_reservation(c); return PTR_ERR(fn);
} /* No data here. Only a metadata node, which will be obsoleted by the first data write
*/
f->metadata = fn;
if (IS_ERR(fd)) { /* dirent failed to write. Delete the inode normally
as if it were the final unlink() */
jffs2_complete_reservation(c);
mutex_unlock(&dir_f->sem); return PTR_ERR(fd);
}
/* Link the fd into the inode's list, obsoleting an old
one if necessary. */
jffs2_add_fd_to_list(c, fd, &dir_f->dents);
if (IS_ERR(fd)) {
jffs2_complete_reservation(c);
mutex_unlock(&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);
mutex_unlock(&dir_f->sem);
} else {
uint32_t nhash = full_name_hash(NULL, name, namelen);
fd = dir_f->dents; /* We don't actually want to reserve any space, but we do
want to be holding the alloc_sem when we write to flash */
mutex_lock(&c->alloc_sem);
mutex_lock(&dir_f->sem);
for (fd = dir_f->dents; fd; fd = fd->next) { if (fd->nhash == nhash &&
!memcmp(fd->name, name, namelen) &&
!fd->name[namelen]) {
jffs2_dbg(1, "Marking old dirent node (ino #%u) @%08x obsolete\n",
fd->ino, ref_offset(fd->raw));
jffs2_mark_node_obsolete(c, fd->raw); /* We don't want to remove it from the list immediately, because that screws up getdents()/seek() semantics even more than they're screwed already. Turn it into a
node-less deletion dirent instead -- a placeholder */
fd->raw = NULL;
fd->ino = 0; break;
}
}
mutex_unlock(&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) {
mutex_lock(&dead_f->sem);
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) {
pr_warn("Deleting inode #%u with active dentry \"%s\"->ino #%u\n",
dead_f->inocache->ino,
fd->name, fd->ino);
} else {
jffs2_dbg(1, "Removing deletion dirent for \"%s\" from dir ino #%u\n",
fd->name,
dead_f->inocache->ino);
} if (fd->raw)
jffs2_mark_node_obsolete(c, fd->raw);
jffs2_free_full_dirent(fd);
}
dead_f->inocache->pino_nlink = 0;
} else
dead_f->inocache->pino_nlink--; /* NB: Caller must set inode nlink if appropriate */
mutex_unlock(&dead_f->sem);
}
jffs2_complete_reservation(c);
return 0;
}
int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint32_t ino, uint8_t type, constchar *name, int namelen, uint32_t time)
{ struct jffs2_raw_dirent *rd; struct jffs2_full_dirent *fd;
uint32_t alloclen; int ret;
rd = jffs2_alloc_raw_dirent(); if (!rd) return -ENOMEM;
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;
}
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