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| author | Christoph Hellwig <hch@lst.de> | 2020-05-23 09:30:13 +0200 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2020-06-03 23:16:55 -0400 |
| commit | cddf8a2c4a8286ae60fc866eab59c8bc524e93a0 (patch) | |
| tree | c3f18f1243c85c5f3d67aa2d4f7afc44f3feccb8 /fs/cifs/smb2ops.c | |
| parent | 2732881894714f545ffac42dad7ba7730069874d (diff) | |
| download | linux-cddf8a2c4a8286ae60fc866eab59c8bc524e93a0.tar.gz | |
fs: move fiemap range validation into the file systems instances
Replace fiemap_check_flags with a fiemap_prep helper that also takes the inode and mapped range, and performs the sanity check and truncation previously done in fiemap_check_range. This way the validation is inside the file system itself and thus properly works for the stacked overlayfs case as well. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Amir Goldstein <amir73il@gmail.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Link: https://lore.kernel.org/r/20200523073016.2944131-7-hch@lst.de Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/cifs/smb2ops.c')
| -rw-r--r-- | fs/cifs/smb2ops.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 09047f1ddfb6..828e53e795c6 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -3408,8 +3408,10 @@ static int smb3_fiemap(struct cifs_tcon *tcon, int i, num, rc, flags, last_blob; u64 next; - if (fiemap_check_flags(fei, FIEMAP_FLAG_SYNC)) - return -EBADR; + rc = fiemap_prep(d_inode(cfile->dentry), fei, start, &len, + FIEMAP_FLAG_SYNC); + if (rc) + return rc; xid = get_xid(); again: |