/**
* Copyright © 2015 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 <time.h>
#include <sys/timerfd.h>
/**
* Pretty self-explanatory.
*/
#ifdef __GNUC__
__attribute__((__pure__))
#endif
static inline int
timecmp(const struct timespec *a, const struct timespec *b)
{
if (a->tv_sec != b->tv_sec) return (a->tv_sec < b->tv_sec ? -1 : +1);
if (a->tv_nsec != b->tv_nsec) return (a->tv_nsec < b->tv_nsec ? -1 : +1);
return 0;
}
/**
* Subroutine to the sat daemon: list jobs.
*
* @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 TIME(job, suffix) ((job)->clk == CLOCK_BOOTTIME ? &boot##suffix : &real##suffix)
char jobno[3 * sizeof(size_t) + 1];
struct itimerspec bootspec;
struct itimerspec realspec;
struct timespec bootnow;
struct timespec realnow;
struct job **jobs = NULL;
struct job **job;
int rc = 0;
t (reopen(STATE_FILENO, O_RDWR));
/* Get current expiration time. */
t (timerfd_gettime(BOOT_FILENO, &bootspec));
t (timerfd_gettime(REAL_FILENO, &realspec));
/* Run expired jobs, and find new expiration times. */
t (clock_gettime(CLOCK_BOOTTIME, &bootnow));
t (clock_gettime(CLOCK_REALTIME, &realnow));
t (!(jobs = get_jobs()));
for (job = jobs; *job; job++) {
if (timecmp(&(job[0]->ts), TIME(*job, now)) <= 0) {
sprintf(jobno, "%zu", job[0]->no);
remove_job(jobno, 2);
} else if (timecmp(&(job[0]->ts), &(TIME(*job, spec)->it_value)) > 0) {
TIME(*job, spec)->it_value = job[0]->ts;
}
}
/* Update expiration time. */
t (timerfd_settime(BOOT_FILENO, TFD_TIMER_ABSTIME, &bootspec, NULL));
t (timerfd_settime(REAL_FILENO, TFD_TIMER_ABSTIME, &realspec, NULL));
done:
for (job = jobs; *job; job++)
free(*job);
free(jobs);
close(STATE_FILENO);
return rc;
fail:
perror(argv[0]);
rc = 1;
goto done;
(void) argc;
}
