mirror of
https://github.com/pygos/init.git
synced 2024-11-22 19:19:47 +01:00
67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-3.0-or-later */
|
|
/*
|
|
* Copyright (C) 2018 - David Oberhollenzer
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
#include "service.h"
|
|
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
|
|
int setup_tty(const char *tty, bool truncate)
|
|
{
|
|
int fd;
|
|
|
|
if (tty == NULL)
|
|
return 0;
|
|
|
|
fd = open(tty, O_RDWR);
|
|
if (fd < 0) {
|
|
perror(tty);
|
|
return -1;
|
|
}
|
|
|
|
if (truncate)
|
|
ftruncate(fd, 0);
|
|
|
|
close(STDIN_FILENO);
|
|
close(STDOUT_FILENO);
|
|
close(STDERR_FILENO);
|
|
|
|
setsid();
|
|
|
|
dup2(fd, STDIN_FILENO);
|
|
dup2(fd, STDOUT_FILENO);
|
|
dup2(fd, STDERR_FILENO);
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
|
|
void argv_exec(exec_t *e)
|
|
{
|
|
char **argv = alloca(sizeof(char *) * (e->argc + 1)), *ptr;
|
|
int i;
|
|
|
|
for (ptr = e->args, i = 0; i < e->argc; ++i, ptr += strlen(ptr) + 1)
|
|
argv[i] = ptr;
|
|
|
|
argv[i] = NULL;
|
|
execvp(argv[0], argv);
|
|
perror(argv[0]);
|
|
exit(EXIT_FAILURE);
|
|
}
|