1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #include <string.h>
28 #include <sys/file.h>
29 #include <sys/syscall.h>
30
31 int
execve(char * file,char ** argv,char ** arge)32 execve(char *file, char **argv, char **arge)
33 {
34 char *c;
35 char path[256];
36
37 if (strncmp(file, "/usr/bin", strlen("/usr/bin")) == 0 ||
38 strncmp(file, "/bin", strlen("/bin")) == 0) {
39 if (_syscall(SYS_faccessat, AT_FDCWD, file, F_OK, 0) == -1) {
40 strcpy(path, "/usr/ucb");
41 strcat(path, strrchr(file, '/'));
42 file = path;
43 }
44 }
45 else if (strncmp(file, "/usr/ucb", strlen("/usr/ucb")) == 0) {
46 strcpy(path, "/usr/bin");
47 strcat(path, strrchr(file, '/'));
48 if (_syscall(SYS_faccessat, AT_FDCWD, path, F_OK, 0) == 0)
49 file = path;
50 }
51 else if (strncmp(file, "/usr/5bin", strlen("/usr/5bin")) == 0) {
52 strcpy(path, "/usr/bin");
53 strcat(path, strrchr(file, '/'));
54 if (_syscall(SYS_faccessat, AT_FDCWD, path, F_OK, 0) == 0)
55 file = path;
56 else {
57 strcpy(path, "/usr/ucb");
58 strcat(path, strrchr(file, '/'));
59 if (_syscall(SYS_faccessat, AT_FDCWD, path, F_OK, 0)
60 == 0)
61 file = path;
62 }
63 }
64
65 return (_syscall(SYS_execve, file, argv, arge));
66 }
67