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| author | Steven Rostedt <srostedt@redhat.com> | 2009-03-04 19:10:05 -0500 |
|---|---|---|
| committer | Steven Rostedt <srostedt@redhat.com> | 2009-03-04 19:10:05 -0500 |
| commit | 2dc5d12b1f43134e9bc5037f69f4739cfdfab93e (patch) | |
| tree | fd1070a750b7f88e01527b3d808e73f7f9fcb45a /kernel/trace/trace_output.c | |
| parent | 4f3640f8a358f2183a8c966f299eeb55ca523e06 (diff) | |
| download | linux-2dc5d12b1f43134e9bc5037f69f4739cfdfab93e.tar.bz2 | |
tracing: do not return EFAULT if read copied anything
Impact: fix trace read to conform to standards
Andrew Morton, Theodore Tso and H. Peter Anvin brought to my attention
that a userspace read should not return -EFAULT if it succeeded in
copying anything. It should only return -EFAULT if it failed to copy
at all.
This patch modifies the check of copy_from_user and updates the return
code appropriately.
I also used H. Peter Anvin's short cut rule to just test ret == count.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Diffstat (limited to 'kernel/trace/trace_output.c')
0 files changed, 0 insertions, 0 deletions