execve.c revision 8fd04b8338ed5093ec2d1e668fa620b7de44c177
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2010 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include "chkpath.h"
#include <string.h>
#include <sys/file.h>
#include <sys/syscall.h>
int
execve(char *file, char **argv, char **arge)
{
char *c;
char path[256];
CHKNULL(file);
if (strncmp(file, "/usr/ucb", strlen("/usr/ucb")) == 0) {
if (_syscall(SYS_faccessat, AT_FDCWD, file, F_OK, 0) == -1) {
strcpy(path, "/usr/bin");
strcat(path, strrchr(file, '/'));
file = path;
}
}
else if (strncmp(file, "/bin", strlen("/bin")) == 0 ||
strncmp(file, "/usr/bin", strlen("/usr/bin")) == 0) {
strcpy(path, "/usr/ucb");
strcat(path, strrchr(file, '/'));
if (_syscall(SYS_faccessat, AT_FDCWD, path, F_OK, 0) == 0)
file = path;
}
else if (strncmp(file, "/usr/5bin", strlen("/usr/5bin")) == 0) {
strcpy(path, "/usr/bin");
strcat(path, strrchr(file, '/'));
if (_syscall(SYS_faccessat, AT_FDCWD, path, F_OK, 0) == 0)
file = path;
else {
strcpy(path, "/usr/ucb");
strcat(path, strrchr(file, '/'));
if (_syscall(SYS_faccessat, AT_FDCWD, path, F_OK, 0)
== 0)
file = path;
}
}
return (_syscall(SYS_execve, file, argv, arge));
}