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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 1990 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include "chkpath.h" 30 #include <string.h> 31 #include <sys/file.h> 32 #include <sys/syscall.h> 33 34 int 35 execve(char *file, char **argv, char **arge) 36 { 37 char *c; 38 char path[256]; 39 40 41 CHKNULL(file); 42 if (strncmp(file, "/usr/ucb", strlen("/usr/ucb")) == 0) { 43 if (_syscall(SYS_access, file, F_OK) == -1) { 44 strcpy(path, "/usr/bin"); 45 strcat(path, strrchr(file, '/')); 46 file = path; 47 } 48 } 49 else if (strncmp(file, "/bin", strlen("/bin")) == 0 || 50 strncmp(file, "/usr/bin", strlen("/usr/bin")) == 0) { 51 strcpy(path, "/usr/ucb"); 52 strcat(path, strrchr(file, '/')); 53 if (_syscall(SYS_access, path, F_OK) == 0) 54 file = path; 55 } 56 else if (strncmp(file, "/usr/5bin", strlen("/usr/5bin")) == 0) { 57 strcpy(path, "/usr/bin"); 58 strcat(path, strrchr(file, '/')); 59 if (_syscall(SYS_access, path, F_OK) == 0) 60 file = path; 61 else { 62 strcpy(path, "/usr/ucb"); 63 strcat(path, strrchr(file, '/')); 64 if (_syscall(SYS_access, path, F_OK) == 0) 65 file = path; 66 } 67 } 68 69 return (_syscall(SYS_execve, file, argv, arge)); 70 } 71