diff options
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | src/c_bsdsetsid.c | 50 | ||||
| -rw-r--r-- | src/c_fork.c | 102 | ||||
| -rw-r--r-- | src/c_fork.h | 53 |
4 files changed, 160 insertions, 47 deletions
@@ -11,7 +11,7 @@ # ======================== # # bsdsetsid: Makefile -# Wed Nov 25 22:16:00 CET 2020 +# Thu Nov 26 22:01:36 CET 2020 # Joe # # BSD Makefile diff --git a/src/c_bsdsetsid.c b/src/c_bsdsetsid.c index bd449ec..7d3a76d 100644 --- a/src/c_bsdsetsid.c +++ b/src/c_bsdsetsid.c @@ -39,7 +39,7 @@ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * bsdsetsid: src/c_bsdsetsid.c - * Wed Nov 25 23:06:05 CET 2020 + * Thu Nov 26 22:12:37 CET 2020 * Joe * * This is the entrypoint of the program. @@ -52,15 +52,14 @@ #include <unistd.h> #include "c_bsdsetsid.h" +#include "c_fork.h" static char c_args (int argc, const char* argv[], - const char* envp[], bool_t* wopt) { - (void)envp; if (argc == 1) { dprintf( STDERR_FILENO, @@ -91,53 +90,12 @@ main const char* argv[], const char* envp[]) { - int sets_ret; - int exec_ret; - pid_t pid; bool_t wopt; wopt = FALSE; - if (c_args(argc, argv, envp, &wopt) != 0) { + if (c_args(argc, argv, &wopt) != 0) { return (EXIT_FAILURE); } - pid = fork(); - if (pid == -1) { - dprintf( - STDERR_FILENO, - "%s: fork: %s\n", - C_PROGNAME, - strerror(errno) - ); - return (EXIT_FAILURE); - } - else if (pid == 0) { - sets_ret = setsid(); - if (sets_ret == -1) { - dprintf( - STDERR_FILENO, - "%s: setsid: %s\n", - C_PROGNAME, - strerror(errno) - ); - return (EXIT_FAILURE); - } - exec_ret = execve( - argv[1 + wopt], - (char* const*)argv + (1 + wopt), - (char* const*)envp - ); - if (exec_ret == -1) { - dprintf( - STDERR_FILENO, - "%s: execve: %s\n", - C_PROGNAME, - strerror(errno) - ); - return (EXIT_FAILURE); - } - } - else { - return (EXIT_SUCCESS); - } + c_fork(argv, envp, wopt); return (EXIT_SUCCESS); } diff --git a/src/c_fork.c b/src/c_fork.c index e222cda..7709bd6 100644 --- a/src/c_fork.c +++ b/src/c_fork.c @@ -1,3 +1,105 @@ +/* + * ======================== + * ===== =============== + * ====== ================ + * ====== ================ + * ====== ==== ==== == + * ====== === == = = + * ====== === = == = + * = === === = == ==== + * = === === = == = = + * == ===== ==== == + * ======================== + * + * SPDX-License-Identifier: BSD-3-Clause + * + * Copyright (c) 2020 Joe + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the organization nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY JOE ''AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL JOE BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * bsdsetsid: src/c_fork.c + * Thu Nov 26 22:12:40 CET 2020 + * Joe + * + * The program's main fork(2). + */ + +#include <errno.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> #include <unistd.h> #include "c_bsdsetsid.h" + +void +c_fork +(const char* argv[], + const char* envp[], + bool_t wopt) +{ + int sets_ret; + int exec_ret; + pid_t pid; + + pid = fork(); + if (pid == -1) { + dprintf( + STDERR_FILENO, + "%s: fork: %s\n", + C_PROGNAME, + strerror(errno) + ); + exit(EXIT_FAILURE); + } + else if (pid == 0) { + sets_ret = setsid(); + if (sets_ret == -1) { + dprintf( + STDERR_FILENO, + "%s: setsid: %s\n", + C_PROGNAME, + strerror(errno) + ); + exit(EXIT_FAILURE); + } + exec_ret = execve( + argv[1 + wopt], + (char* const*)argv + (1 + wopt), + (char* const*)envp + ); + if (exec_ret == -1) { + dprintf( + STDERR_FILENO, + "%s: execve: %s\n", + C_PROGNAME, + strerror(errno) + ); + exit(EXIT_FAILURE); + } + } + else { + exit(EXIT_SUCCESS); + } +} diff --git a/src/c_fork.h b/src/c_fork.h index e69de29..dfc154c 100644 --- a/src/c_fork.h +++ b/src/c_fork.h @@ -0,0 +1,53 @@ +/* + * ======================== + * ===== =============== + * ====== ================ + * ====== ================ + * ====== ==== ==== == + * ====== === == = = + * ====== === = == = + * = === === = == ==== + * = === === = == = = + * == ===== ==== == + * ======================== + * + * SPDX-License-Identifier: BSD-3-Clause + * + * Copyright (c) 2020 Joe + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the organization nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY JOE ''AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL JOE BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * bsdsetsid: src/c_fork.h + * Thu Nov 26 22:09:56 CET 2020 + * Joe + */ + +#ifndef __C_FORK_H__ +#define __C_FORK_H__ + +#include "c_bsdsetsid.h" + +void c_fork(const char*[], const char*[], bool_t); + +#endif |