mirror of
https://github.com/tuxbox-fork-migrations/recycled-ni-neutrino.git
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205bb3bc65
Origin commit data
------------------
Commit: ae73a950eb
Author: vanhofen <vanhofen@gmx.de>
Date: 2012-08-30 (Thu, 30 Aug 2012)
Origin message was:
------------------
- system/helpers.h|cpp: change header
105 lines
2.4 KiB
C++
105 lines
2.4 KiB
C++
/*
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Neutrino-HD
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License: GPL
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <iostream>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/wait.h>
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#include <system/helpers.h>
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int my_system(const char * cmd, const char * arg1, const char * arg2)
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{
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int i;
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pid_t pid;
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int maxfd = getdtablesize();// sysconf(_SC_OPEN_MAX);
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switch (pid = vfork())
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{
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case -1: /* can't vfork */
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perror("vfork");
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return -1;
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case 0: /* child process */
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for(i = 3; i < maxfd; i++)
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close(i);
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if(execlp(cmd, cmd, arg1, arg2, NULL))
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{
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perror("exec");
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}
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exit(0);
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default: /* parent returns to calling process */
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break;
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}
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waitpid(pid, 0, 0);
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return 0;
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}
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FILE* my_popen( pid_t& pid, const char *cmdstring, const char *type)
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{
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int pfd[2] ={-1,-1};
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FILE *fp = NULL;
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/* only allow "r" or "w" */
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if ((type[0] != 'r' && type[0] != 'w') || type[1] != 0) {
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errno = EINVAL; /* required by POSIX */
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return(NULL);
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}
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if (pipe(pfd) < 0)
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return(NULL); /* errno set by pipe() */
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if ((pid = vfork()) < 0) {
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return(NULL); /* errno set by vfork() */
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} else if (pid == 0) { /* child */
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if (*type == 'r') {
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close(pfd[0]);
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if (pfd[1] != STDOUT_FILENO) {
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dup2(pfd[1], STDOUT_FILENO);
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close(pfd[1]);
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}
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} else {
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close(pfd[1]);
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if (pfd[0] != STDIN_FILENO) {
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dup2(pfd[0], STDIN_FILENO);
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close(pfd[0]);
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}
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}
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execl("/bin/sh", "sh", "-c", cmdstring, (char *)0);
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exit(0);
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}
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/* parent continues... */
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if (*type == 'r') {
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close(pfd[1]);
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if ((fp = fdopen(pfd[0], type)) == NULL)
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return(NULL);
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} else {
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close(pfd[0]);
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if ((fp = fdopen(pfd[1], type)) == NULL)
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return(NULL);
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}
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return(fp);
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}
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