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-rw-r--r--src/dmon.c233
1 files changed, 120 insertions, 113 deletions
diff --git a/src/dmon.c b/src/dmon.c
index 0fd7962..d1ef1cd 100644
--- a/src/dmon.c
+++ b/src/dmon.c
@@ -66,124 +66,130 @@ static unsigned data_loaded;
static void dmon_sigs_hdlr(int sig)
{
- if (data_loaded)
- free_user_data();
+ if (data_loaded)
+ free_user_data();
- DMON_LOG(_("terminated at %s with signal %d\n"), nowstr(), sig);
+ DMON_LOG(_("terminated at %s with signal %d\n"), nowstr(), sig);
- if (unlink(path_dpid) != 0) {
- DMON_LOG(_("Could not remove daemon lock file: %s\n"), strerror(errno));
- exit(EXIT_FAILURE);
- }
+ if (unlink(path_dpid) != 0) {
+ DMON_LOG(_("Could not remove daemon lock file: %s\n"),
+ strerror(errno));
+ exit(EXIT_FAILURE);
+ }
- exit(EXIT_SUCCESS);
+ exit(EXIT_SUCCESS);
}
static unsigned daemonize(int status)
{
- int fd;
-
- /*
- * Operate in the background: Daemonizing.
- *
- * First need to fork in order to become a child of the init process,
- * once the father exits.
- */
- switch (fork()) {
- case -1: /* fork error */
- EXIT(_("Could not fork: %s\n"), strerror(errno));
- break;
- case 0: /* child */
- break;
- default: /* parent */
- exit(status);
- }
-
- /*
- * Process independency.
- *
- * Obtain a new process group and session in order to get detached from the
- * controlling terminal.
- */
- if (setsid() == -1) {
- DMON_LOG(_("Could not detach from the controlling terminal: %s\n"),
- strerror(errno));
- return 0;
- }
-
- /*
- * Change working directory to root directory,
- * to prevent filesystem unmounts.
- */
- if (chdir("/") == -1) {
- DMON_LOG(_("Could not change working directory: %s\n"), strerror(errno));
- return 0;
- }
-
- /* Redirect standard file descriptors to /dev/null. */
- if ((fd = open(_PATH_DEVNULL, O_RDWR, 0)) != -1) {
- dup2(fd, STDIN_FILENO);
- dup2(fd, STDOUT_FILENO);
- dup2(fd, STDERR_FILENO);
- if (fd > 2)
- close(fd);
- }
-
- /* Write access for the owner only. */
- umask(0022);
-
- if (!sigs_set_hdlr(SIGINT, dmon_sigs_hdlr)
- || !sigs_set_hdlr(SIGTERM, dmon_sigs_hdlr)
- || !sigs_set_hdlr(SIGALRM, dmon_sigs_hdlr)
- || !sigs_set_hdlr(SIGQUIT, dmon_sigs_hdlr)
- || !sigs_set_hdlr(SIGCHLD, SIG_IGN))
- return 0;
-
- return 1;
+ int fd;
+
+ /*
+ * Operate in the background: Daemonizing.
+ *
+ * First need to fork in order to become a child of the init process,
+ * once the father exits.
+ */
+ switch (fork()) {
+ case -1: /* fork error */
+ EXIT(_("Could not fork: %s\n"), strerror(errno));
+ break;
+ case 0: /* child */
+ break;
+ default: /* parent */
+ exit(status);
+ }
+
+ /*
+ * Process independency.
+ *
+ * Obtain a new process group and session in order to get detached from the
+ * controlling terminal.
+ */
+ if (setsid() == -1) {
+ DMON_LOG(_("Could not detach from the controlling terminal: %s\n"),
+ strerror(errno));
+ return 0;
+ }
+
+ /*
+ * Change working directory to root directory,
+ * to prevent filesystem unmounts.
+ */
+ if (chdir("/") == -1) {
+ DMON_LOG(_("Could not change working directory: %s\n"),
+ strerror(errno));
+ return 0;
+ }
+
+ /* Redirect standard file descriptors to /dev/null. */
+ if ((fd = open(_PATH_DEVNULL, O_RDWR, 0)) != -1) {
+ dup2(fd, STDIN_FILENO);
+ dup2(fd, STDOUT_FILENO);
+ dup2(fd, STDERR_FILENO);
+ if (fd > 2)
+ close(fd);
+ }
+
+ /* Write access for the owner only. */
+ umask(0022);
+
+ if (!sigs_set_hdlr(SIGINT, dmon_sigs_hdlr)
+ || !sigs_set_hdlr(SIGTERM, dmon_sigs_hdlr)
+ || !sigs_set_hdlr(SIGALRM, dmon_sigs_hdlr)
+ || !sigs_set_hdlr(SIGQUIT, dmon_sigs_hdlr)
+ || !sigs_set_hdlr(SIGCHLD, SIG_IGN))
+ return 0;
+
+ return 1;
}
void dmon_start(int parent_exit_status)
{
- if (!daemonize(parent_exit_status))
- DMON_ABRT(_("Cannot daemonize, aborting\n"));
-
- if (!io_dump_pid(path_dpid))
- DMON_ABRT(_("Could not set lock file\n"));
-
- if (!io_file_exist(path_conf))
- DMON_ABRT(_("Could not access \"%s\": %s\n"), path_conf, strerror(errno));
- config_load();
-
- if (!io_file_exist(path_apts))
- DMON_ABRT(_("Could not access \"%s\": %s\n"), path_apts, strerror(errno));
- apoint_llist_init();
- recur_apoint_llist_init();
- event_llist_init();
- todo_init_list();
- io_load_app();
- data_loaded = 1;
-
- DMON_LOG(_("started at %s\n"), nowstr());
- for (;;) {
- int left;
-
- if (!notify_get_next_bkgd())
- DMON_ABRT(_("error loading next appointment\n"));
-
- left = notify_time_left();
- if (left > 0 && left < nbar.cntdwn && notify_needs_reminder()) {
- DMON_LOG(_("launching notification at %s for: \"%s\"\n"),
- nowstr(), notify_app_txt());
- if (!notify_launch_cmd())
- DMON_LOG(_("error while sending notification\n"));
- }
-
- DMON_LOG(ngettext("sleeping at %s for %d second\n",
- "sleeping at %s for %d seconds\n",
- DMON_SLEEP_TIME), nowstr(), DMON_SLEEP_TIME);
- psleep(DMON_SLEEP_TIME);
- DMON_LOG(_("awakened at %s\n"), nowstr());
- }
+ if (!daemonize(parent_exit_status))
+ DMON_ABRT(_("Cannot daemonize, aborting\n"));
+
+ if (!io_dump_pid(path_dpid))
+ DMON_ABRT(_("Could not set lock file\n"));
+
+ if (!io_file_exist(path_conf))
+ DMON_ABRT(_("Could not access \"%s\": %s\n"), path_conf,
+ strerror(errno));
+ config_load();
+
+ if (!io_file_exist(path_apts))
+ DMON_ABRT(_("Could not access \"%s\": %s\n"), path_apts,
+ strerror(errno));
+ apoint_llist_init();
+ recur_apoint_llist_init();
+ event_llist_init();
+ todo_init_list();
+ io_load_app();
+ data_loaded = 1;
+
+ DMON_LOG(_("started at %s\n"), nowstr());
+ for (;;) {
+ int left;
+
+ if (!notify_get_next_bkgd())
+ DMON_ABRT(_("error loading next appointment\n"));
+
+ left = notify_time_left();
+ if (left > 0 && left < nbar.cntdwn
+ && notify_needs_reminder()) {
+ DMON_LOG(_("launching notification at %s for: \"%s\"\n"),
+ nowstr(), notify_app_txt());
+ if (!notify_launch_cmd())
+ DMON_LOG(_("error while sending notification\n"));
+ }
+
+ DMON_LOG(ngettext("sleeping at %s for %d second\n",
+ "sleeping at %s for %d seconds\n",
+ DMON_SLEEP_TIME), nowstr(),
+ DMON_SLEEP_TIME);
+ psleep(DMON_SLEEP_TIME);
+ DMON_LOG(_("awakened at %s\n"), nowstr());
+ }
}
/*
@@ -192,12 +198,13 @@ void dmon_start(int parent_exit_status)
*/
void dmon_stop(void)
{
- int dpid;
+ int dpid;
- dpid = io_get_pid(path_dpid);
- if (!dpid)
- return;
+ dpid = io_get_pid(path_dpid);
+ if (!dpid)
+ return;
- if (kill((pid_t) dpid, SIGINT) < 0 && errno != ESRCH)
- EXIT(_("Could not stop calcurse daemon: %s\n"), strerror(errno));
+ if (kill((pid_t) dpid, SIGINT) < 0 && errno != ESRCH)
+ EXIT(_("Could not stop calcurse daemon: %s\n"),
+ strerror(errno));
}