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| author | NeilBrown <neilb@suse.de> | 2015-06-25 15:03:45 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-06-25 17:00:43 -0700 |
| commit | f73c2f1f83ca1c4e2f4515f987973bfe56c86973 (patch) | |
| tree | 9ae082c6781b717bdb4e28647938c9aa9ff0de9e /fs/nilfs2 | |
| parent | 9f0f564abbd8812edeef2c839ab3e6ba16595491 (diff) | |
| download | linux-f73c2f1f83ca1c4e2f4515f987973bfe56c86973.tar.gz linux-f73c2f1f83ca1c4e2f4515f987973bfe56c86973.tar.xz | |
NILFS2: support NFSv2 export
The "fh_len" passed to ->fh_to_* is not guaranteed to be that same as that
returned by encode_fh - it may be larger.
With NFSv2, the filehandle is fixed length, so it may appear longer than
expected and be zero-padded.
So we must test that fh_len is at least some value, not exactly equal to
it.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/nilfs2')
| -rw-r--r-- | fs/nilfs2/namei.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/fs/nilfs2/namei.c b/fs/nilfs2/namei.c index 22180836ec22..37dd6b05b1b5 100644 --- a/fs/nilfs2/namei.c +++ b/fs/nilfs2/namei.c @@ -496,8 +496,7 @@ static struct dentry *nilfs_fh_to_dentry(struct super_block *sb, struct fid *fh, { struct nilfs_fid *fid = (struct nilfs_fid *)fh; - if ((fh_len != NILFS_FID_SIZE_NON_CONNECTABLE && - fh_len != NILFS_FID_SIZE_CONNECTABLE) || + if (fh_len < NILFS_FID_SIZE_NON_CONNECTABLE || (fh_type != FILEID_NILFS_WITH_PARENT && fh_type != FILEID_NILFS_WITHOUT_PARENT)) return NULL; @@ -510,7 +509,7 @@ static struct dentry *nilfs_fh_to_parent(struct super_block *sb, struct fid *fh, { struct nilfs_fid *fid = (struct nilfs_fid *)fh; - if (fh_len != NILFS_FID_SIZE_CONNECTABLE || + if (fh_len < NILFS_FID_SIZE_CONNECTABLE || fh_type != FILEID_NILFS_WITH_PARENT) return NULL; |