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| author | Al Viro <viro@zeniv.linux.org.uk> | 2016-05-13 02:35:57 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2016-05-13 02:35:57 +0300 |
| commit | e82c3147554785414a10a2d424590758646972b2 (patch) | |
| tree | 54dcbe319a89601b153cfb8556faee1e6a6dda19 /fs/hpfs/dnode.c | |
| parent | 1d1bb236bc2ffb3586d6cc73e58c0d8351758123 (diff) | |
| download | linux-e82c3147554785414a10a2d424590758646972b2.tar.xz | |
hpfs: handle allocation failures in hpfs_add_pos()
pr_err() is nice, but we'd better propagate the error
to caller and not proceed to violate the invariants
(namely, "every file with f_pos tied to directory block
should have its address visible in per-inode array").
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/hpfs/dnode.c')
| -rw-r--r-- | fs/hpfs/dnode.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/fs/hpfs/dnode.c b/fs/hpfs/dnode.c index 2923a7bd82ac..86ab7e790b4e 100644 --- a/fs/hpfs/dnode.c +++ b/fs/hpfs/dnode.c @@ -21,7 +21,7 @@ static loff_t get_pos(struct dnode *d, struct hpfs_dirent *fde) return ((loff_t)le32_to_cpu(d->self) << 4) | (loff_t)1; } -void hpfs_add_pos(struct inode *inode, loff_t *pos) +int hpfs_add_pos(struct inode *inode, loff_t *pos) { struct hpfs_inode_info *hpfs_inode = hpfs_i(inode); int i = 0; @@ -29,11 +29,12 @@ void hpfs_add_pos(struct inode *inode, loff_t *pos) if (hpfs_inode->i_rddir_off) for (; hpfs_inode->i_rddir_off[i]; i++) - if (hpfs_inode->i_rddir_off[i] == pos) return; + if (hpfs_inode->i_rddir_off[i] == pos) + return 0; if (!(i&0x0f)) { if (!(ppos = kmalloc((i+0x11) * sizeof(loff_t*), GFP_NOFS))) { pr_err("out of memory for position list\n"); - return; + return -ENOMEM; } if (hpfs_inode->i_rddir_off) { memcpy(ppos, hpfs_inode->i_rddir_off, i * sizeof(loff_t)); @@ -43,6 +44,7 @@ void hpfs_add_pos(struct inode *inode, loff_t *pos) } hpfs_inode->i_rddir_off[i] = pos; hpfs_inode->i_rddir_off[i + 1] = NULL; + return 0; } void hpfs_del_pos(struct inode *inode, loff_t *pos) |