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1 | /* This implements wait4 with the 4.4 BSD semantics (also those documented in |
2 | SunOS 4.1) on top of SunOS's wait4 system call, which has semantics | |
3 | different from those documented. Go Sun! | |
ebbad4cc UD |
4 | Copyright (C) 1991, 1992, 1993, 1995, 1997 Free Software Foundation, Inc. |
5 | This file is part of the GNU C Library. | |
28f540f4 | 6 | |
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7 | The GNU C Library is free software; you can redistribute it and/or |
8 | modify it under the terms of the GNU Library General Public License as | |
9 | published by the Free Software Foundation; either version 2 of the | |
10 | License, or (at your option) any later version. | |
28f540f4 | 11 | |
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12 | The GNU C Library is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | Library General Public License for more details. | |
28f540f4 | 16 | |
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17 | You should have received a copy of the GNU Library General Public |
18 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
19 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
28f540f4 | 21 | |
28f540f4 RM |
22 | #include <sys/types.h> |
23 | #include <sys/wait.h> | |
24 | #include <unistd.h> | |
25 | ||
26 | extern pid_t __wait4_syscall __P ((pid_t pid, __WAIT_STATUS_DEFN stat_loc, | |
27 | int options, struct rusage *usage)); | |
28 | ||
29 | pid_t | |
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30 | __wait4 (pid, stat_loc, options, usage) |
31 | pid_t pid; | |
32 | __WAIT_STATUS_DEFN stat_loc; | |
33 | int options; | |
34 | struct rusage *usage; | |
28f540f4 RM |
35 | { |
36 | switch (pid) | |
37 | { | |
38 | case WAIT_ANY: | |
39 | pid = 0; | |
40 | break; | |
41 | ||
42 | case WAIT_MYPGRP: | |
43 | pid = - getpgrp (); | |
44 | break; | |
45 | } | |
46 | ||
47 | return __wait4_syscall (pid, stat_loc, options, usage); | |
48 | } | |
49 | ||
50 | weak_alias (__wait4, wait4) |