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/* Copyright (C) 1991,95,96,97,2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <sys/wait.h>
#include <sys/types.h>
#include <stddef.h>
#include <sysdep-cancel.h>
/* Wait for a child matching PID to die.
If PID is greater than 0, match any process whose process ID is PID.
If PID is (pid_t) -1, match any process.
If PID is (pid_t) 0, match any process with the
same process group as the current process.
If PID is less than -1, match any process whose
process group is the absolute value of PID.
If the WNOHANG bit is set in OPTIONS, and that child
is not already dead, return (pid_t) 0. If successful,
return PID and store the dead child's status in STAT_LOC.
Return (pid_t) -1 for errors. If the WUNTRACED bit is set in OPTIONS,
return status for stopped children; otherwise don't. */
pid_t
__libc_waitpid (pid_t pid, int *stat_loc, int options)
{
if (SINGLE_THREAD_P)
{
return INLINE_SYSCALL (wait4, 4, pid, stat_loc, options, NULL);
}
int oldtype = LIBC_CANCEL_ASYNC ();
int result = INLINE_SYSCALL (wait4, 4, pid, stat_loc, options, NULL);
LIBC_CANCEL_RESET (oldtype);
return result;
}
weak_alias (__libc_waitpid, __waitpid)
libc_hidden_weak (__waitpid)
weak_alias (__libc_waitpid, waitpid)
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