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wait.2: Add details on the fifth argument provided by raw waitid() system call 

See https://bugzilla.kernel.org/show_bug.cgi?id=60744

Reported-by: Hannes Landeholm <hannes@jumpstarter.io>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2013-09-04 15:06:22 +02:00
parent fb854b1378
commit d8b13fb4d9
1 changed files with 15 additions and 1 deletions
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16
man2/wait.2
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@ -46,7 +46,7 @@
.\" 2005-05-10, mtk, __W* flags can't be used with waitid()
.\" 2008-07-04, mtk, removed erroneous text about SA_NOCLDSTOP
.\"
.TH WAIT 2 2012-12-21 "Linux" "Linux Programmer's Manual"
.TH WAIT 2 2013-09-04 "Linux" "Linux Programmer's Manual"
.SH NAME
wait, waitpid, waitid \- wait for process to change state
.SH SYNOPSIS
@ -60,6 +60,8 @@ wait, waitpid, waitid \- wait for process to change state
.BI "int waitid(idtype_t " idtype ", id_t " id \
", siginfo_t *" infop ", int " options );
/* This is the glibc and POSIX interface; see
NOTES for information on the raw system call. */
.sp
.in -4n
Feature Test Macro Requirements for glibc (see
@ -518,6 +520,18 @@ type ("clone" or "non-clone").
Do not wait for children of other threads in
the same thread group.
This was the default before Linux 2.4.
.PP
The raw
.BR waitid ()
system call takes a fith argument, of type
.IR "struct rusage\ *" .
If this argument is non-NULL,
then it is used to return resource usage information about the child,
in the same manner as
.BR wait4 (2).
See
.BR getrusage (2)
for details.
.SH BUGS
According to POSIX.1-2008, an application calling
.BR waitid ()