jehanne/sys/src/lib/posix/sigqueue.c

50 lines
1.4 KiB
C

/*
* This file is part of Jehanne.
*
* Copyright (C) 2017 Giacomo Tesio <giacomo@tesio.it>
*
* This is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, version 3 of the License.
*
* Jehanne 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 Affero General Public License
* along with Jehanne. If not, see <http://www.gnu.org/licenses/>.
*/
#include <u.h>
#include <lib9.h>
#include <posix.h>
#include "internal.h"
int
POSIX_sigqueue(int *errnop, int pid, int signo, const union sigval value)
{
PosixError perror;
PosixSignalInfo siginfo;
int errno;
if(signo < 1 || signo > PosixNumberOfSignals){
*errnop = __libposix_get_errno(PosixEINVAL);
return -1;
}
memset(&siginfo, 0, sizeof(PosixSignalInfo));
siginfo.si_signo = signo;
siginfo.si_pid = *__libposix_pid;
siginfo.si_code = PosixSIQueue;
siginfo.si_uid = POSIX_getuid(&errno);
siginfo.si_value._sival_raw = value._sival_raw;
if(pid == siginfo.si_pid)
perror = __libposix_receive_signal(&siginfo);
else
perror = __libposix_dispatch_signal(pid, &siginfo);
if(perror != 0){
*errnop = __libposix_get_errno(perror);
return -1;
}
return 0;
}