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https://github.com/troglobit/libite.git
synced 2026-10-02 05:42:49 +07:00
yangfl
059bfd7806
For filesystems without high-resolution time support, an usleep() is too short to alter mtime. Though 1s is quite safe, sleep for 2s in case it gets awaken right within that second.
134 lines
2.9 KiB
C
134 lines
2.9 KiB
C
#include <err.h>
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#include <paths.h>
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#include <signal.h>
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#include <stdarg.h>
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#include <time.h>
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#include "check.h"
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extern char *__pidfile_name;
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extern char *__pidfile_path;
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static char *ident;
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static char *pidfile_arg;
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static char PIDFILE[42];
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static int verbose = 0;
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static struct stat before, after;
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static void sigterm_handler(int signo)
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{
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(void)signo;
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PRINT("Exiting ...\n");
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remove(PIDFILE);
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}
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static void sigalrm_handler(int signo)
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{
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(void)signo;
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PRINT("Calling pidfile(%s)\n", pidfile_arg ?: "NULL");
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if (pidfile(pidfile_arg))
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err(1, "failed creating1 %s", pidfile_arg);
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if (!fexist(PIDFILE))
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err(1, "failed creating2 %s, created %s", PIDFILE, __pidfile_name);
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stat(PIDFILE, &before);
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}
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static int mtime()
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{
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int ret;
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char buf[80];
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/* Must sleep a while here otherwise we execute too fast => no mtime change :-( */
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sleep(2);
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PRINT("Calling pidfile() again to update mtime ...\n");
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if (pidfile(pidfile_arg))
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err(1, "failed creating3 %s", pidfile_arg);
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stat(PIDFILE, &after);
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ret = timespec_newer(&after.st_mtim, &before.st_mtim);
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PRINT("Before: %s\n", timespec2str(&before.st_mtim, buf, sizeof(buf)));
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PRINT("After : %s\n", timespec2str(&after.st_mtim, buf, sizeof(buf)));
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return !ret;
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}
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int test_pidfile(char *arg0)
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{
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/* pidfile() argument */
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pidfile_arg = arg0;
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/* Expected PID file name */
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if (!arg0)
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snprintf(PIDFILE, sizeof(PIDFILE), "%s%s.pid", __pidfile_path, ident);
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else if (arg0[0] != '/')
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snprintf(PIDFILE, sizeof(PIDFILE), "%s%s.pid", __pidfile_path, arg0);
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else
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snprintf(PIDFILE, sizeof(PIDFILE), "%s", arg0);
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PRINT("Verifying pidfile(%s) ... PID: %d\n", PIDFILE, getpid());
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/* Remove any lingering files from previous test runs */
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remove(PIDFILE);
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signal(SIGTERM, sigterm_handler);
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signal(SIGALRM, sigalrm_handler);
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/* For signalling test */
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alarm(1);
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return test(pidfile_poll(PIDFILE) != getpid(), "Testing pidfile_poll()")
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|| test(strcmp(__pidfile_name, PIDFILE), "Testing __pidfile_name vs guessed PID filename")
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|| test(mtime(), "Testing mtime update of followup pidfile() call")
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|| test(pidfile_signal(PIDFILE, SIGTERM), "Testing signalling ourselves")
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;
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}
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static char *progname(char *arg0)
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{
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char *nm;
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nm = strrchr(arg0, '/');
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if (nm)
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nm++;
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else
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nm = arg0;
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return nm;
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}
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int main(int argc, char *argv[])
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{
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int ret = 0;
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size_t i;
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char *pidfiles[] = {
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NULL,
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"pidfile_test1",
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"/var/tmp/pidfile_test2.pid",
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};
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if (argc > 1 && !strcmp(argv[1], "-v"))
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verbose = 1;
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/* Override default _PATH_VARRUN in pidfile() */
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__pidfile_path = _PATH_TMP;
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/* Find __progname, not all C libraries support this */
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ident = progname(argv[0]);
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for (i = 0; i < NELEMS(pidfiles); i++)
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ret += test_pidfile(pidfiles[i]);
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return ret;
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}
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/**
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* Local Variables:
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* indent-tabs-mode: t
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* c-file-style: "linux"
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* compile-command: "make pidfile && ./pidfile -v"
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* End:
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*/
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