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 25 RCSID("$Id: bsd-waitpid.c,v 1.3 2001/03/26 05:35:34 mouring Exp $"); 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #ifndef HAVE_WAITPID 30 #include <errno.h> 31 #include <sys/wait.h> 32 #include "bsd-waitpid.h" 33 34 pid_t 35 waitpid(int pid, int *stat_loc, int options) 36 { 37 union wait statusp; 38 pid_t wait_pid; 39 40 if (pid <= 0) { 41 if (pid != -1) { 42 errno = EINVAL; 43 return -1; 44 } 45 pid = 0; /* wait4() wants pid=0 for indiscriminate wait. */ 46 } 47 wait_pid = wait4(pid, &statusp, options, NULL); 48 if (stat_loc) 49 *stat_loc = (int) statusp.w_status; 50 51 return wait_pid; 52 } 53 54 #endif /* !HAVE_WAITPID */ 55