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| author | Michael Kerrisk <mtk.manpages@gmail.com> | 2011-09-14 07:38:35 +0200 |
|---|---|---|
| committer | Michael Kerrisk <mtk.manpages@gmail.com> | 2011-09-16 07:00:48 +0200 |
| commit | 009cdc2239fe84d1a7862b4fa30f3258f49279e4 (patch) | |
| tree | 8ae1a846b94352e20581041809252dc9279c98e9 /man2/timerfd_create.2 | |
| parent | bb0fed2e8a7b3d5b722635343eff96c5781e8f4f (diff) | |
| download | man-pages-009cdc2239fe84d1a7862b4fa30f3258f49279e4.tar.gz | |
timerfd_create.2: Note behavior when timerdfd_settime() old_value is NULL
See http://bugs.debian.org/cgi-bin/bugreport.cgi?641513
timerfd_settime(2) states that "The old_value argument returns a
structure containing the setting of the timer that was current at
the time of the call"; however, it does not mention that the
caller can pass NULL to ignore that value. Only the example
shows that the caller can pass NULL.
Reported-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Diffstat (limited to 'man2/timerfd_create.2')
| -rw-r--r-- | man2/timerfd_create.2 | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/man2/timerfd_create.2 b/man2/timerfd_create.2 index f90e2218d0..47117b95da 100644 --- a/man2/timerfd_create.2 +++ b/man2/timerfd_create.2 @@ -17,7 +17,7 @@ .\" .\" FIXME: Linux 3.0: timerfd_settime() adds a TFD_TIMER_CANCEL_ON_SET flag. .\" -.TH TIMERFD_CREATE 2 2009-03-10 Linux "Linux Programmer's Manual" +.TH TIMERFD_CREATE 2 2011-09-14 Linux "Linux Programmer's Manual" .SH NAME timerfd_create, timerfd_settime, timerfd_gettime \- timers that notify via file descriptors @@ -167,10 +167,13 @@ that is, the timer will expire when the value of that clock reaches the value specified in .IR new_value.it_value ). -The +If the .I old_value -argument returns a structure containing the setting of the timer that -was current at the time of the call; see the description of +argument is not NULL, then the +.I itimerspec +structure that it points to is used to return the setting of the timer +that was current at the time of the call; +see the description of .BR timerfd_gettime () following. .\" |