/**
* Copyright © 2015, 2016 Mattias Andrée <maandree@member.fsf.org>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "daemon.h"
#include <sys/file.h>
#include <sys/stat.h>
/**
* Subroutine to the sat daemon: add job.
*
* @param argc Should be 3.
* @param argv The name of the process, the pathname of the socket,
* and the pathname to the state file.
* @return 0 The process was successful.
* @return 1 The process failed queuing the job.
*/
int
main(int argc, char *argv[])
{
#define M ((struct job *)message)
size_t n = 0, elements = 0, i;
ssize_t r;
char *message = NULL;
struct stat attr;
DAEMON_PROLOGUE;
/* Receive and validate message. */
t (readall(SOCK_FILENO, &message, &n) || (n < sizeof(struct job)));
t (M->n != (n -= sizeof(struct job)));
t ((M->argc < 1) || !n || message[sizeof(struct job) - 1 + n]);
for (i = n; i--; elements += !message[sizeof(struct job) + i]);
t (elements < (size_t)(M->argc));
/* Update state file and run hook. */
t (flock(STATE_FILENO, LOCK_EX));
t (fstat(STATE_FILENO, &attr));
t (r = preadn(STATE_FILENO, &(M->no), sizeof(M->no), (size_t)0), r < 0);
if (r < (ssize_t)sizeof(M->no))
M->no = 0;
else
M->no += 1;
t (pwriten(STATE_FILENO, &(M->no), sizeof(M->no), (size_t)0) < (ssize_t)sizeof(M->no));
if (attr.st_size < (off_t)sizeof(M->no))
attr.st_size = (off_t)sizeof(M->no);
n += sizeof(struct job);
t (pwriten(STATE_FILENO, message, n, (size_t)(attr.st_size)) < (ssize_t)n);
fsync(STATE_FILENO);
run_job_or_hook(M, "queued");
t (flock(STATE_FILENO, LOCK_UN));
DAEMON_CLEANUP_START;
free(message);
DAEMON_CLEANUP_END;
}
