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/* uroot - User's root
* sigpipe.c Source file for signaling pipe implementation
*
* Copyright (C) 2018 Karel Kočí
*
* 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 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#define _GNU_SOURCE
#include "sigpipe.h"
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <assert.h>
sigpipe_t sigpipe_new() {
sigpipe_t sp = malloc(2 * sizeof(int));
if (!pipe(sp))
assert_perror(errno);
return sp;
}
void sigpipe_wait(sigpipe_t sp) {
close(sp[1]);
char ch;
while (read(sp[0], &ch, 1) > 0);
assert_perror(errno);
free(sp);
}
void sigpipe_signal(sigpipe_t sp) {
close(sp[0]);
close(sp[1]);
free(sp);
}
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