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| author | Amir Goldstein <amir73il@gmail.com> | 2016-10-26 22:34:01 +0300 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2016-12-16 13:02:54 +0300 |
| commit | b335e9d9944d9c66cdaadc5e295cc845c31e40a0 (patch) | |
| tree | 5bb3e91b25ab88eac7694e84561d81c51ba0aba8 /fs/read_write.c | |
| parent | 031a072a0b8ac2646def77aa310a95016c884bb0 (diff) | |
| download | linux-b335e9d9944d9c66cdaadc5e295cc845c31e40a0.tar.xz | |
vfs: fix vfs_clone_file_range() for overlayfs files
With overlayfs, it is wrong to compare file_inode(inode)->i_sb
of regular files with those of non-regular files, because the
former reference the real (upper/lower) sb and the latter reference
the overlayfs sb.
Move the test for same super block after the sanity tests for
clone range of directory and non-regular file.
This change fixes xfstest generic/157, which returned EXDEV instead
of EISDIR/EINVAL in the following test cases over overlayfs:
echo "Try to reflink a dir"
_reflink_range $testdir1/dir1 0 $testdir1/file2 0 $blksz
echo "Try to reflink a device"
_reflink_range $testdir1/dev1 0 $testdir1/file2 0 $blksz
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/read_write.c')
| -rw-r--r-- | fs/read_write.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/fs/read_write.c b/fs/read_write.c index c4e206b875d0..53bccd1c786e 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -1655,6 +1655,11 @@ int vfs_clone_file_range(struct file *file_in, loff_t pos_in, struct inode *inode_out = file_inode(file_out); int ret; + if (S_ISDIR(inode_in->i_mode) || S_ISDIR(inode_out->i_mode)) + return -EISDIR; + if (!S_ISREG(inode_in->i_mode) || !S_ISREG(inode_out->i_mode)) + return -EINVAL; + /* * FICLONE/FICLONERANGE ioctls enforce that src and dest files are on * the same mount. Practically, they only need to be on the same file @@ -1663,11 +1668,6 @@ int vfs_clone_file_range(struct file *file_in, loff_t pos_in, if (inode_in->i_sb != inode_out->i_sb) return -EXDEV; - if (S_ISDIR(inode_in->i_mode) || S_ISDIR(inode_out->i_mode)) - return -EISDIR; - if (!S_ISREG(inode_in->i_mode) || !S_ISREG(inode_out->i_mode)) - return -EINVAL; - if (!(file_in->f_mode & FMODE_READ) || !(file_out->f_mode & FMODE_WRITE) || (file_out->f_flags & O_APPEND)) |