1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2008 AT&T Intellectual Property * 5 * and is licensed under the * 6 * Common Public License, Version 1.0 * 7 * by AT&T Intellectual Property * 8 * * 9 * A copy of the License is available at * 10 * http://www.opensource.org/licenses/cpl1.0.txt * 11 * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * 12 * * 13 * Information and Software Systems Research * 14 * AT&T Research * 15 * Florham Park NJ * 16 * * 17 * Glenn Fowler <gsf@research.att.com> * 18 * David Korn <dgk@research.att.com> * 19 * Phong Vo <kpv@research.att.com> * 20 * * 21 ***********************************************************************/ 22 #pragma prototyped 23 24 #include <ast_lib.h> 25 26 #if _lib_execvpe 27 28 #include <ast.h> 29 30 NoN(execvpe) 31 32 #else 33 34 #if defined(__EXPORT__) 35 __EXPORT__ int execvpe(const char*, char* const[], char* const[]); 36 #endif 37 38 #include <ast.h> 39 #include <errno.h> 40 41 #if defined(__EXPORT__) 42 #define extern __EXPORT__ 43 #endif 44 45 extern int 46 execvpe(const char* name, char* const argv[], char* const envv[]) 47 { 48 register const char* path = name; 49 char buffer[PATH_MAX]; 50 51 if (*path != '/' && !(path = pathpath(buffer, name, NULL, PATH_REGULAR|PATH_EXECUTE))) 52 path = name; 53 execve(path, argv, envv); 54 if (errno == ENOEXEC) 55 { 56 register char** newargv; 57 register char** ov; 58 register char** nv; 59 60 for (ov = (char**)argv; *ov++;); 61 if (newargv = newof(0, char*, ov + 1 - (char**)argv, 0)) 62 { 63 nv = newargv; 64 *nv++ = "sh"; 65 *nv++ = (char*)path; 66 ov = (char**)argv; 67 while (*nv++ = *++ov); 68 path = pathshell(); 69 execve(path, newargv, envv); 70 free(newargv); 71 } 72 else 73 errno = ENOMEM; 74 } 75 return -1; 76 } 77 78 #endif 79