[openssh.git] / openbsd-compat / bsd-waitpid.c

/*
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "includes.h"

RCSID("$Id$");

#ifndef HAVE_WAITPID 
#include <errno.h>
#include <sys/wait.h>
#include "bsd-waitpid.h"

pid_t
waitpid(int pid, int *stat_loc, int options)
{
	union wait statusp;
	pid_t wait_pid;

	if (pid <= 0) {
		if (pid != -1) {
			errno = EINVAL;
			return -1;
		}
		pid = 0;   /* wait4() wants pid=0 for indiscriminate wait. */
	}
        wait_pid = wait4(pid, &statusp, options, NULL);
	if (stat_loc)
        	*stat_loc = (int) statusp.w_status;            

        return wait_pid;                               
}

#endif /* !HAVE_WAITPID */
Commit	Line	Data
a30ce26d	1	/*
	2	* Redistribution and use in source and binary forms, with or without
	3	* modification, are permitted provided that the following conditions
	4	* are met:
	5	* 1. Redistributions of source code must retain the above copyright
	6	* notice, this list of conditions and the following disclaimer.
	7	* 2. Redistributions in binary form must reproduce the above copyright
	8	* notice, this list of conditions and the following disclaimer in the
	9	* documentation and/or other materials provided with the distribution.
	10	*
	11	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
	12	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	13	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
	14	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
	15	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	16	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	17	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	18	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	19	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
	20	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	21	*/
	22
	23	#include "includes.h"
	24
0b202697	25	RCSID("$Id$");
0b202697	26
a30ce26d	27	#ifndef HAVE_WAITPID
	28	#include <errno.h>
	29	#include <sys/wait.h>
d0127657	30	#include "bsd-waitpid.h"
a30ce26d	31
	32	pid_t
	33	waitpid(int pid, int *stat_loc, int options)
	34	{
	35	union wait statusp;
	36	pid_t wait_pid;
	37
	38	if (pid <= 0) {
	39	if (pid != -1) {
	40	errno = EINVAL;
	41	return -1;
	42	}
	43	pid = 0; /* wait4() wants pid=0 for indiscriminate wait. */
	44	}
	45	wait_pid = wait4(pid, &statusp, options, NULL);
60a8683f	46	if (stat_loc)
	47	*stat_loc = (int) statusp.w_status;
	48
a30ce26d	49	return wait_pid;
	50	}
	51
	52	#endif /* !HAVE_WAITPID */