1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright 1992 Sun Microsystems, Inc. All rights reserved.
24*0Sstevel@tonic-gate * Use is subject to license terms.
25*0Sstevel@tonic-gate */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate /* Copyright (c) 1984 AT&T */
28*0Sstevel@tonic-gate /* All Rights Reserved */
29*0Sstevel@tonic-gate
30*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" /* from S5R2 1.2 */
31*0Sstevel@tonic-gate
32*0Sstevel@tonic-gate /*LINTLIBRARY*/
33*0Sstevel@tonic-gate #include <signal.h>
34*0Sstevel@tonic-gate #include <sys/types.h>
35*0Sstevel@tonic-gate #include <sys/wait.h>
36*0Sstevel@tonic-gate #include <string.h>
37*0Sstevel@tonic-gate #include <sys/file.h>
38*0Sstevel@tonic-gate
39*0Sstevel@tonic-gate extern int execl();
40*0Sstevel@tonic-gate
41*0Sstevel@tonic-gate int
system(s)42*0Sstevel@tonic-gate system(s)
43*0Sstevel@tonic-gate char *s;
44*0Sstevel@tonic-gate {
45*0Sstevel@tonic-gate int status;
46*0Sstevel@tonic-gate pid_t pid, w;
47*0Sstevel@tonic-gate register void (*istat)(), (*qstat)();
48*0Sstevel@tonic-gate char path[256];
49*0Sstevel@tonic-gate char *c;
50*0Sstevel@tonic-gate
51*0Sstevel@tonic-gate while (*s == ' ' || *s == '\t')
52*0Sstevel@tonic-gate s++;
53*0Sstevel@tonic-gate
54*0Sstevel@tonic-gate if (strncmp(s, "/usr/ucb", strlen("/usr/ucb")) == 0) {
55*0Sstevel@tonic-gate /* check if command is under /usr/ucb, if not
56*0Sstevel@tonic-gate * replace /usr/ucb with /usr/bin.
57*0Sstevel@tonic-gate */
58*0Sstevel@tonic-gate strcpy(path, s);
59*0Sstevel@tonic-gate if ((c = strchr(path, ' ')) != NULL)
60*0Sstevel@tonic-gate *c ='\0';
61*0Sstevel@tonic-gate if (access(path, F_OK) == -1) {
62*0Sstevel@tonic-gate strncpy(path, "/usr/bin", strlen("/usr/bin"));
63*0Sstevel@tonic-gate if (c != NULL) *c = ' ';
64*0Sstevel@tonic-gate s = path;
65*0Sstevel@tonic-gate }
66*0Sstevel@tonic-gate }
67*0Sstevel@tonic-gate else if (strncmp(s, "/bin", strlen("/bin")) == 0 ||
68*0Sstevel@tonic-gate strncmp(s, "/usr/bin", strlen("/usr/bin")) == 0) {
69*0Sstevel@tonic-gate /* if /usr/bin is specified, first check if the command
70*0Sstevel@tonic-gate * exists under /usr/bin, otherwise try /usr/ucb */
71*0Sstevel@tonic-gate if (access(path, F_OK) == -1) {
72*0Sstevel@tonic-gate strcpy(path, "/usr/ucb");
73*0Sstevel@tonic-gate if (strncmp(s, "/bin", strlen("/bin")) == 0)
74*0Sstevel@tonic-gate strcat(path, strchr(s+1, '/'));
75*0Sstevel@tonic-gate else {
76*0Sstevel@tonic-gate c = strchr(s+1, '/');
77*0Sstevel@tonic-gate strcat(path, strchr(c+1, '/'));
78*0Sstevel@tonic-gate }
79*0Sstevel@tonic-gate if (c != NULL) *c = ' ';
80*0Sstevel@tonic-gate s = path;
81*0Sstevel@tonic-gate }
82*0Sstevel@tonic-gate }
83*0Sstevel@tonic-gate
84*0Sstevel@tonic-gate if ((pid = vfork()) == 0) {
85*0Sstevel@tonic-gate (void) execl("/bin/sh", "sh", "-c", s, (char *)0);
86*0Sstevel@tonic-gate _exit(127);
87*0Sstevel@tonic-gate }
88*0Sstevel@tonic-gate if (pid == -1) {
89*0Sstevel@tonic-gate return (-1);
90*0Sstevel@tonic-gate }
91*0Sstevel@tonic-gate istat = signal(SIGINT, SIG_IGN);
92*0Sstevel@tonic-gate qstat = signal(SIGQUIT, SIG_IGN);
93*0Sstevel@tonic-gate w = waitpid(pid, &status, 0);
94*0Sstevel@tonic-gate (void) signal(SIGINT, istat);
95*0Sstevel@tonic-gate (void) signal(SIGQUIT, qstat);
96*0Sstevel@tonic-gate return ((w == -1) ? -1: status);
97*0Sstevel@tonic-gate }
98