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/*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
#include <stdlib.h>
#include <unistd.h>
#include "libbb.h"
#include "unarchive.h"
/* transformer(), more than meets the eye */
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]);
}
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