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/*
Copyright (C) 2006 by Jonas Kramer
Published under the terms of the GNU General Public License (GPL).
*/
#define _GNU_SOURCE
#include <sys/types.h>
#include <stdio.h>
#include <unistd.h>
#include <assert.h>
#include <errno.h>
#include <string.h>
#include "interface.h"
#include "pipe.h"
FILE * openpipe(const char * cmd, pid_t * cpid) {
pid_t pid;
int fd[2] = { 0 };
assert(cmd);
if(-1 == pipe(fd)) {
fprintf(stderr, "Couldn't create pipe. %s.\n", strerror(errno));
return NULL;
}
pid = fork();
if(pid == -1) {
fprintf(stderr, "Fork failed. %s.\n", strerror(errno));
close(fd[1]);
close(fd[0]);
return NULL;
}
if(!pid) {
close(fd[1]);
dup2(fd[0], 0);
execl("/bin/sh", "sh", "-c", cmd, NULL);
}
if(cpid != NULL)
* cpid = pid;
return fdopen(fd[1], "w");
}
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