posix_spawnp.c revision 1.2.2.2
1 1.2.2.2 yamt /* $NetBSD: posix_spawnp.c,v 1.2.2.2 2012/04/17 00:05:19 yamt Exp $ */ 2 1.2.2.2 yamt 3 1.2.2.2 yamt /*- 4 1.2.2.2 yamt * Copyright (c) 2011 The NetBSD Foundation, Inc. 5 1.2.2.2 yamt * All rights reserved. 6 1.2.2.2 yamt * 7 1.2.2.2 yamt * This code is derived from software contributed to The NetBSD Foundation 8 1.2.2.2 yamt * by Martin Husemann <martin (at) NetBSD.org>. 9 1.2.2.2 yamt * 10 1.2.2.2 yamt * Redistribution and use in source and binary forms, with or without 11 1.2.2.2 yamt * modification, are permitted provided that the following conditions 12 1.2.2.2 yamt * are met: 13 1.2.2.2 yamt * 1. Redistributions of source code must retain the above copyright 14 1.2.2.2 yamt * notice, this list of conditions and the following disclaimer. 15 1.2.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 16 1.2.2.2 yamt * notice, this list of conditions and the following disclaimer in the 17 1.2.2.2 yamt * documentation and/or other materials provided with the distribution. 18 1.2.2.2 yamt * 19 1.2.2.2 yamt * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 1.2.2.2 yamt * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 1.2.2.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 1.2.2.2 yamt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 1.2.2.2 yamt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 1.2.2.2 yamt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 1.2.2.2 yamt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 1.2.2.2 yamt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 1.2.2.2 yamt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 1.2.2.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 1.2.2.2 yamt * POSSIBILITY OF SUCH DAMAGE. 30 1.2.2.2 yamt */ 31 1.2.2.2 yamt 32 1.2.2.2 yamt #include <sys/cdefs.h> 33 1.2.2.2 yamt #if defined(LIBC_SCCS) && !defined(lint) 34 1.2.2.2 yamt __RCSID("$NetBSD: posix_spawnp.c,v 1.2.2.2 2012/04/17 00:05:19 yamt Exp $"); 35 1.2.2.2 yamt #endif /* LIBC_SCCS and not lint */ 36 1.2.2.2 yamt 37 1.2.2.2 yamt #include <stdio.h> 38 1.2.2.2 yamt #include <string.h> 39 1.2.2.2 yamt #include <stdlib.h> 40 1.2.2.2 yamt #include <errno.h> 41 1.2.2.2 yamt #include <unistd.h> 42 1.2.2.2 yamt #include <spawn.h> 43 1.2.2.2 yamt 44 1.2.2.2 yamt 45 1.2.2.2 yamt int posix_spawnp(pid_t * __restrict pid, const char * __restrict file, 46 1.2.2.2 yamt const posix_spawn_file_actions_t *fa, 47 1.2.2.2 yamt const posix_spawnattr_t * __restrict sa, 48 1.2.2.2 yamt char * const *__restrict cav, char * const *__restrict env) 49 1.2.2.2 yamt { 50 1.2.2.2 yamt char fpath[FILENAME_MAX], *last, *p; 51 1.2.2.2 yamt char *path; 52 1.2.2.2 yamt 53 1.2.2.2 yamt /* 54 1.2.2.2 yamt * If there is a / in the filename, or no PATH environment variable 55 1.2.2.2 yamt * set, fall straight through to posix_spawn(). 56 1.2.2.2 yamt */ 57 1.2.2.2 yamt if (strchr(file, '/') != NULL || (path = getenv("PATH")) == NULL) 58 1.2.2.2 yamt return posix_spawn(pid, file, fa, sa, cav, env); 59 1.2.2.2 yamt 60 1.2.2.2 yamt path = strdup(path); 61 1.2.2.2 yamt if (path == NULL) 62 1.2.2.2 yamt return ENOMEM; 63 1.2.2.2 yamt 64 1.2.2.2 yamt /* 65 1.2.2.2 yamt * Find an executable image with the given name in the PATH 66 1.2.2.2 yamt */ 67 1.2.2.2 yamt for (p = strtok_r(path, ":", &last); p; 68 1.2.2.2 yamt p = strtok_r(NULL, ":", &last)) { 69 1.2.2.2 yamt snprintf(fpath, sizeof fpath, "%s/%s", p, file); 70 1.2.2.2 yamt fpath[FILENAME_MAX-1] = 0; 71 1.2.2.2 yamt if (access(fpath, X_OK) == 0) 72 1.2.2.2 yamt break; 73 1.2.2.2 yamt } 74 1.2.2.2 yamt free(path); 75 1.2.2.2 yamt 76 1.2.2.2 yamt /* 77 1.2.2.2 yamt * Use posix_spawn() with the found binary 78 1.2.2.2 yamt */ 79 1.2.2.2 yamt return posix_spawn(pid, fpath, fa, sa, cav, env); 80 1.2.2.2 yamt } 81 1.2.2.2 yamt 82
Indexes created Fri Sep 26 20:09:58 GMT 2025