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fsck.f2fs: fix inodes having wrong i_links

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This patch fixes inodes which have wrong i_links.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2015-03-25 18:26:44 -07:00
parent e17732608c
commit c0feedadd9
2 changed files with 42 additions and 0 deletions
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41
fsck/fsck.c
View File

@ -63,6 +63,7 @@ static int add_into_hard_link_list(struct f2fs_sb_info *sbi,
node->nid = nid;
node->links = link_cnt;
node->actual_links = 1;
node->next = NULL;
if (fsck->hard_link_list_head == NULL) {
@ -112,6 +113,7 @@ static int find_and_dec_hard_link_list(struct f2fs_sb_info *sbi, u32 nid)
/* Decrease link count */
node->links = node->links - 1;
node->actual_links++;
/* if link count becomes one, remove the node */
if (node->links == 1) {
@ -296,6 +298,10 @@ static int sanity_check_nid(struct f2fs_sb_info *sbi, u32 nid,
}
}
/* this if only from fix_hard_links */
if (ftype == F2FS_FT_MAX)
return 0;
if (ntype == TYPE_INODE &&
__check_inode_mode(nid, ftype, le32_to_cpu(node_blk->i.i_mode)))
return -EINVAL;
@ -999,6 +1005,40 @@ void fsck_init(struct f2fs_sb_info *sbi)
ASSERT(tree_mark != NULL);
}
static void fix_hard_links(struct f2fs_sb_info *sbi)
{
struct f2fs_fsck *fsck = F2FS_FSCK(sbi);
struct hard_link_node *tmp, *node;
struct f2fs_node *node_blk = NULL;
struct node_info ni;
int ret;
if (fsck->hard_link_list_head == NULL)
return;
node_blk = (struct f2fs_node *)calloc(BLOCK_SZ, 1);
ASSERT(node_blk != NULL);
node = fsck->hard_link_list_head;
while (node) {
/* Sanity check */
if (sanity_check_nid(sbi, node->nid, node_blk,
F2FS_FT_MAX, TYPE_INODE, &ni, NULL))
FIX_MSG("Failed to fix, rerun fsck.f2fs");
node_blk->i.i_links = cpu_to_le32(node->actual_links);
FIX_MSG("File: 0x%x i_links= 0x%x -> 0x%x",
node->nid, node->links, node->actual_links);
ret = dev_write_block(node_blk, ni.blk_addr);
ASSERT(ret >= 0);
tmp = node;
node = node->next;
free(tmp);
}
}
static void fix_nat_entries(struct f2fs_sb_info *sbi)
{
struct f2fs_fsck *fsck = F2FS_FSCK(sbi);
@ -1223,6 +1263,7 @@ int fsck_verify(struct f2fs_sb_info *sbi)
/* fix global metadata */
if (force || (config.bug_on && config.fix_on)) {
fix_hard_links(sbi);
fix_nat_entries(sbi);
rewrite_sit_area_bitmap(sbi);
fix_checkpoint(sbi);

1
fsck/fsck.h
View File

@ -67,6 +67,7 @@ enum NODE_TYPE {
struct hard_link_node {
u32 nid;
u32 links;
u32 actual_links;
struct hard_link_node *next;
};