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author | KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> | 2009-05-28 14:34:21 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-05-29 08:40:02 -0700 |
commit | bd6daba909d8484bd2ccf6017db4028d7a420927 (patch) | |
tree | e5c5fa2ddb9b3658a24c15ca4050c71f68dc634f /mm | |
parent | b2e1feaf0af6b8a826b86748a19ddc2013ab7dbd (diff) | |
download | linux-bd6daba909d8484bd2ccf6017db4028d7a420927.tar.bz2 |
procfs: make errno values consistent when open pident vs exit(2) race occurs
proc_pident_instantiate() has following call flow.
proc_pident_lookup()
proc_pident_instantiate()
proc_pid_make_inode()
And, proc_pident_lookup() has following error handling.
const struct pid_entry *p, *last;
error = ERR_PTR(-ENOENT);
if (!task)
goto out_no_task;
Then, proc_pident_instantiate should return ENOENT too when racing against
exit(2) occur.
EINAL has two bad reason.
- it implies caller is wrong. bad the race isn't caller's mistake.
- man 2 open don't explain EINVAL. user often don't handle it.
Note: Other proc_pid_make_inode() caller already use ENOENT properly.
Acked-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions