diff options
Diffstat (limited to 'crypto/heimdal/lib/roken/simple_exec.c')
| -rw-r--r-- | crypto/heimdal/lib/roken/simple_exec.c | 254 |
1 files changed, 0 insertions, 254 deletions
diff --git a/crypto/heimdal/lib/roken/simple_exec.c b/crypto/heimdal/lib/roken/simple_exec.c deleted file mode 100644 index 1f27c00e73e2..000000000000 --- a/crypto/heimdal/lib/roken/simple_exec.c +++ /dev/null @@ -1,254 +0,0 @@ -/* - * Copyright (c) 1998 - 2001 Kungliga Tekniska Högskolan - * (Royal Institute of Technology, Stockholm, Sweden). - * 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 Institute 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 THE INSTITUTE AND CONTRIBUTORS ``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 THE INSTITUTE OR CONTRIBUTORS 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. - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -RCSID("$Id: simple_exec.c,v 1.10 2001/06/21 03:38:03 assar Exp $"); -#endif - -#include <stdarg.h> -#include <stdlib.h> -#ifdef HAVE_SYS_TYPES_H -#include <sys/types.h> -#endif -#ifdef HAVE_SYS_WAIT_H -#include <sys/wait.h> -#endif -#ifdef HAVE_UNISTD_H -#include <unistd.h> -#endif -#include <errno.h> - -#include <roken.h> - -#define EX_NOEXEC 126 -#define EX_NOTFOUND 127 - -/* return values: - -1 on `unspecified' system errors - -2 on fork failures - -3 on waitpid errors - 0- is return value from subprocess - 126 if the program couldn't be executed - 127 if the program couldn't be found - 128- is 128 + signal that killed subprocess - */ - -int -wait_for_process(pid_t pid) -{ - while(1) { - int status; - - while(waitpid(pid, &status, 0) < 0) - if (errno != EINTR) - return -3; - if(WIFSTOPPED(status)) - continue; - if(WIFEXITED(status)) - return WEXITSTATUS(status); - if(WIFSIGNALED(status)) - return WTERMSIG(status) + 128; - } -} - -int -pipe_execv(FILE **stdin_fd, FILE **stdout_fd, FILE **stderr_fd, - const char *file, ...) -{ - int in_fd[2], out_fd[2], err_fd[2]; - pid_t pid; - va_list ap; - char **argv; - - if(stdin_fd != NULL) - pipe(in_fd); - if(stdout_fd != NULL) - pipe(out_fd); - if(stderr_fd != NULL) - pipe(err_fd); - pid = fork(); - switch(pid) { - case 0: - va_start(ap, file); - argv = vstrcollect(&ap); - va_end(ap); - if(argv == NULL) - exit(-1); - - /* close pipes we're not interested in */ - if(stdin_fd != NULL) - close(in_fd[1]); - if(stdout_fd != NULL) - close(out_fd[0]); - if(stderr_fd != NULL) - close(err_fd[0]); - - /* pipe everything caller doesn't care about to /dev/null */ - if(stdin_fd == NULL) - in_fd[0] = open(_PATH_DEVNULL, O_RDONLY); - if(stdout_fd == NULL) - out_fd[1] = open(_PATH_DEVNULL, O_WRONLY); - if(stderr_fd == NULL) - err_fd[1] = open(_PATH_DEVNULL, O_WRONLY); - - /* move to proper descriptors */ - if(in_fd[0] != STDIN_FILENO) { - dup2(in_fd[0], STDIN_FILENO); - close(in_fd[0]); - } - if(out_fd[1] != STDOUT_FILENO) { - dup2(out_fd[1], STDOUT_FILENO); - close(out_fd[1]); - } - if(err_fd[1] != STDERR_FILENO) { - dup2(err_fd[1], STDERR_FILENO); - close(err_fd[1]); - } - - execv(file, argv); - exit((errno == ENOENT) ? EX_NOTFOUND : EX_NOEXEC); - case -1: - if(stdin_fd != NULL) { - close(in_fd[0]); - close(in_fd[1]); - } - if(stdout_fd != NULL) { - close(out_fd[0]); - close(out_fd[1]); - } - if(stderr_fd != NULL) { - close(err_fd[0]); - close(err_fd[1]); - } - return -2; - default: - if(stdin_fd != NULL) { - close(in_fd[0]); - *stdin_fd = fdopen(in_fd[1], "w"); - } - if(stdout_fd != NULL) { - close(out_fd[1]); - *stdout_fd = fdopen(out_fd[0], "r"); - } - if(stderr_fd != NULL) { - close(err_fd[1]); - *stderr_fd = fdopen(err_fd[0], "r"); - } - } - return pid; -} - -int -simple_execvp(const char *file, char *const args[]) -{ - pid_t pid = fork(); - switch(pid){ - case -1: - return -2; - case 0: - execvp(file, args); - exit((errno == ENOENT) ? EX_NOTFOUND : EX_NOEXEC); - default: - return wait_for_process(pid); - } -} - -/* gee, I'd like a execvpe */ -int -simple_execve(const char *file, char *const args[], char *const envp[]) -{ - pid_t pid = fork(); - switch(pid){ - case -1: - return -2; - case 0: - execve(file, args, envp); - exit((errno == ENOENT) ? EX_NOTFOUND : EX_NOEXEC); - default: - return wait_for_process(pid); - } -} - -int -simple_execlp(const char *file, ...) -{ - va_list ap; - char **argv; - int ret; - - va_start(ap, file); - argv = vstrcollect(&ap); - va_end(ap); - if(argv == NULL) - return -1; - ret = simple_execvp(file, argv); - free(argv); - return ret; -} - -int -simple_execle(const char *file, ... /* ,char *const envp[] */) -{ - va_list ap; - char **argv; - char *const* envp; - int ret; - - va_start(ap, file); - argv = vstrcollect(&ap); - envp = va_arg(ap, char **); - va_end(ap); - if(argv == NULL) - return -1; - ret = simple_execve(file, argv, envp); - free(argv); - return ret; -} - -int -simple_execl(const char *file, ...) -{ - va_list ap; - char **argv; - int ret; - - va_start(ap, file); - argv = vstrcollect(&ap); - va_end(ap); - if(argv == NULL) - return -1; - ret = simple_execve(file, argv, environ); - free(argv); - return ret; -} |