mirror of
https://github.com/sheumann/hush.git
synced 2024-12-25 18:33:06 +00:00
52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
/*
|
|
* 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 2 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 Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
#include "libbb.h"
|
|
|
|
/* transformer(), more than meets the eye */
|
|
extern int open_transformer(int src_fd, int (*transformer)(int src_fd, int dst_fd))
|
|
{
|
|
int fd_pipe[2];
|
|
int pid;
|
|
|
|
if (pipe(fd_pipe) != 0) {
|
|
bb_perror_msg_and_die("Can't create pipe");
|
|
}
|
|
|
|
pid = fork();
|
|
if (pid == -1) {
|
|
bb_perror_msg_and_die("Fork failed");
|
|
}
|
|
|
|
if (pid == 0) {
|
|
/* child process */
|
|
close(fd_pipe[0]); /* We don't wan't to read from the parent */
|
|
transformer(src_fd, fd_pipe[1]);
|
|
close(fd_pipe[1]); /* Send EOF */
|
|
close(src_fd);
|
|
exit(0);
|
|
/* notreached */
|
|
}
|
|
|
|
/* parent process */
|
|
close(fd_pipe[1]); /* Don't want to write to the child */
|
|
|
|
return(fd_pipe[0]);
|
|
}
|