1 /* xsystem.c - system(3) with error messages
5 Copyright (C) 2001 University of Southern California
7 This program is free software; you can redistribute it and/or
8 modify it under the terms of the GNU General Public License as
9 published by the Free Software Foundation; either version 2, or (at
10 your option) any later version.
12 This program is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 General Public License for more details.
18 #include <sys/types.h>
23 #include "libbb/libbb.h"
25 /* Like system(3), but with error messages printed if the fork fails
26 or if the child process dies due to an uncaught signal. Also, the
27 return value is a bit simpler:
29 -1 if there was any problem
30 Otherwise, the 8-bit return value of the program ala WEXITSTATUS
31 as defined in <sys/wait.h>.
34 xsystem(const char *argv[])
43 opkg_perror(ERROR, "%s: vfork", argv[0]);
47 execvp(argv[0], (char*const*)argv);
54 if (waitpid(pid, &status, 0) == -1) {
55 opkg_perror(ERROR, "%s: waitpid", argv[0]);
59 if (WIFSIGNALED(status)) {
60 opkg_msg(ERROR, "%s: Child killed by signal %d.\n",
61 argv[0], WTERMSIG(status));
65 if (!WIFEXITED(status)) {
66 /* shouldn't happen */
67 opkg_msg(ERROR, "%s: Your system is broken: got status %d "
68 "from waitpid.\n", argv[0], status);
72 return WEXITSTATUS(status);