1/*********************************************************************** 2* * 3* This software is part of the ast package * 4* Copyright (c) 1985-2011 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 30NoN(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 45extern int 46execvpe(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(name, NULL, PATH_REGULAR|PATH_EXECUTE, buffer, sizeof(buffer)))) 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