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| author | Darrick J. Wong <[email protected]> | 2022-11-10 20:16:29 +0000 |
|---|---|---|
| committer | Theodore Ts'o <[email protected]> | 2022-12-09 02:49:24 +0000 |
| commit | b76abb5157468756163fe7e3431c9fe32cba57ca (patch) | |
| tree | aa7af365db6a4810e277ed9fca58acb80021a8cc /fs/jbd2/commit.c | |
| parent | ext4: fix error code return to user-space in ext4_get_branch() (diff) | |
| download | kernel-b76abb5157468756163fe7e3431c9fe32cba57ca.tar.gz kernel-b76abb5157468756163fe7e3431c9fe32cba57ca.zip | |
ext4: dont return EINVAL from GETFSUUID when reporting UUID length
If userspace calls this ioctl with fsu_length (the length of the
fsuuid.fsu_uuid array) set to zero, ext4 copies the desired uuid length
out to userspace. The kernel call returned a result from a valid input,
so the return value here should be zero, not EINVAL.
While we're at it, fix the copy_to_user call to make it clear that we're
only copying out fsu_len.
Signed-off-by: Darrick J. Wong <[email protected]>
Reviewed-by: Catherine Hoang <[email protected]>
Link: https://lore.kernel.org/r/166811138914.327006.9241306894437166566.stgit@magnolia
Signed-off-by: Theodore Ts'o <[email protected]>
Cc: [email protected]
Diffstat (limited to 'fs/jbd2/commit.c')
0 files changed, 0 insertions, 0 deletions