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 "chkpath.h"
28 #include <string.h>
29 #include <sys/file.h>
30 #include <sys/syscall.h>
31
32 int
execve(char * file,char ** argv,char ** arge)33 execve(char *file, char **argv, char **arge)
34 {
35 char *c;
36 char path[256];
37
38
39 CHKNULL(file);
40 if (strncmp(file, "/usr/ucb", strlen("/usr/ucb")) == 0) {
41 if (_syscall(SYS_faccessat, AT_FDCWD, file, F_OK, 0) == -1) {
42 strcpy(path, "/usr/bin");
43 strcat(path, strrchr(file, '/'));
44 file = path;
45 }
46 }
47 else if (strncmp(file, "/bin", strlen("/bin")) == 0 ||
48 strncmp(file, "/usr/bin", strlen("/usr/bin")) == 0) {
49 strcpy(path, "/usr/ucb");
50 strcat(path, strrchr(file, '/'));
51 if (_syscall(SYS_faccessat, AT_FDCWD, path, F_OK, 0) == 0)
52 file = path;
53 }
54 else if (strncmp(file, "/usr/5bin", strlen("/usr/5bin")) == 0) {
55 strcpy(path, "/usr/bin");
56 strcat(path, strrchr(file, '/'));
57 if (_syscall(SYS_faccessat, AT_FDCWD, path, F_OK, 0) == 0)
58 file = path;
59 else {
60 strcpy(path, "/usr/ucb");
61 strcat(path, strrchr(file, '/'));
62 if (_syscall(SYS_faccessat, AT_FDCWD, path, F_OK, 0)
63 == 0)
64 file = path;
65 }
66 }
67
68 return (_syscall(SYS_execve, file, argv, arge));
69 }
70