1 /* $NetBSD: lvm-exec.c,v 1.1.1.1 2008/12/22 00:18:12 haad Exp $ */ 2 3 /* 4 * Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved. 5 * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. 6 * 7 * This file is part of LVM2. 8 * 9 * This copyrighted material is made available to anyone wishing to use, 10 * modify, copy, or redistribute it subject to the terms and conditions 11 * of the GNU Lesser General Public License v.2.1. 12 * 13 * You should have received a copy of the GNU Lesser General Public License 14 * along with this program; if not, write to the Free Software Foundation, 15 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 16 */ 17 18 #include "lib.h" 19 #include "lvm-exec.h" 20 21 #include <unistd.h> 22 #include <sys/wait.h> 23 24 /* 25 * Execute and wait for external command 26 */ 27 int exec_cmd(const char *command, const char *fscmd, const char *lv_path, 28 const char *size) 29 { 30 pid_t pid; 31 int status; 32 33 log_verbose("Executing: %s %s %s %s", command, fscmd, lv_path, size); 34 35 if ((pid = fork()) == -1) { 36 log_error("fork failed: %s", strerror(errno)); 37 return 0; 38 } 39 40 if (!pid) { 41 /* Child */ 42 /* FIXME Use execve directly */ 43 execlp(command, command, fscmd, lv_path, size, NULL); 44 log_sys_error("execlp", command); 45 exit(errno); 46 } 47 48 /* Parent */ 49 if (wait4(pid, &status, 0, NULL) != pid) { 50 log_error("wait4 child process %u failed: %s", pid, 51 strerror(errno)); 52 return 0; 53 } 54 55 if (!WIFEXITED(status)) { 56 log_error("Child %u exited abnormally", pid); 57 return 0; 58 } 59 60 if (WEXITSTATUS(status)) { 61 log_error("%s failed: %u", command, WEXITSTATUS(status)); 62 return 0; 63 } 64 65 return 1; 66 } 67