Implement Slackware specific information for rc.ntpd

This updates the necessary code in timedated.c to use the ntpd via /etc/rc.d/rc.ntpd script in Slackware. The updated code looks for rc.ntpd to see if it is available and checks the file permission's to see if it is either executable or not.

src/timedated.c

@@ -36,6 +36,10 @@
 #include <rc.h>
 #endif
 
+#if TIME_STYLE_SLACKWARE
+#include <sys/stat.h>
+#endif
+
 #include "copypaste/hwclock.h"
 #include "timedated.h"
 #include "timedate1-generated.h"
@@ -186,26 +190,6 @@ set_timezone (const gchar *identifier,
     return TRUE;
 }
 
-#if TIME_STYLE_SLACKWARE
-// Function to check if the NTP service is running
-bool ntp_is_running() {
-    FILE* fp = popen("pgrep ntpd", "r"); // Check if the ntpd process is running
-    if (fp == NULL) {
-        perror("popen");
-        return false; // Assume NTP is not running if an error occurs
-    }
-
-    char buf[128];
-    if (fgets(buf, sizeof(buf), fp) != NULL) {
-        pclose(fp);
-        return true; // NTP process found, so it is running
-    }
-
-    pclose(fp);
-    return false; // NTP process not found, so it is not running
-}
-#endif
-
 /* Return the ntp rc service we will use; return value should NOT be freed */
 static const gchar *
 ntp_service ()
@@ -233,11 +217,22 @@ ntp_service ()
 
     return service;
 #elif TIME_STYLE_SLACKWARE
-    // Check if NTP service is already running
-    // Add your logic here to check if the NTP program is running
-    if (ntp_is_running()) {
-        return "ntpd"; // Assuming "ntp" is the default service name when NTP is running
+    const char *rc_ntpd = "/etc/rc.d/rc.ntpd";
+    const char *ntpd_conf = "/etc/ntp.conf"; // Assuming this is the path for NTP configuration
+    struct stat st_ntpd, st_ntpd_conf;
+
+    if (stat(rc_ntpd, &st_ntpd) == 0 && (st_ntpd.st_mode & S_IFMT) == S_IFREG &&
+        stat(ntpd_conf, &st_ntpd_conf) == 0 && (st_ntpd_conf.st_mode & S_IFMT) == S_IFREG) {
+        
+        if ((st_ntpd.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO)) == 0755) {
+            g_debug("Starting ntpd: rc.ntpd has appropriate permissions (0755).");
+            return "ntpd";
+        } else if ((st_ntpd.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO)) == 0644) {
+            g_debug("Unable to start ntpd: rc.ntpd has insufficient permissions (0644).");
+            return NULL;
+        }
     }
+    g_warning("Unable to start ntpd: rc.ntpd is not a regular file or does not exist.");
     return NULL;
 #else
     return NULL;
@@ -260,6 +255,31 @@ service_started (const gchar *service,
 
     state = rc_service_state (service);
     return state == RC_SERVICE_STARTED || state == RC_SERVICE_STARTING || state == RC_SERVICE_INACTIVE;
+#elif TIME_STYLE_SLACKWARE
+    const char *rc_ntpd = "/etc/rc.d/rc.ntpd";
+    struct stat st;
+
+    // Check the file status
+    if (stat(rc_ntpd, &st) == 0) {
+        // Check if it's a regular file and permissions are 755
+        if ((st.st_mode & S_IFMT) == S_IFREG &&
+            (st.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO)) == 0755) {
+            // Check the NTP daemon status
+            int ret = system("/etc/rc.d/rc.ntpd status");
+            if (ret == 0) {
+                return TRUE; // NTP daemon is running
+            } else {
+                // Attempt to start the NTP daemon if not running
+                gchar *cmd = g_strconcat("/etc/rc.d/rc.ntpd start", NULL);
+                ret = system(cmd);
+                g_free(cmd);
+                return (ret == 0); // Return TRUE if start command succeeds
+            }
+        } else {
+            g_debug("Unable to start ntpd: rc.ntpd has insufficient permissions (not 755).");
+        }
+    }
+    return FALSE;
 #else
     return FALSE;
 #endif
@@ -313,6 +333,18 @@ service_disable (const gchar *service,
     if (service_script != NULL)
         free (service_script);
     return ret;
+#elif TIME_STYLE_SLACKWARE
+    int stop_ret = system("/etc/rc.d/rc.ntpd stop");
+    if (stop_ret != 0) {
+        g_set_error(error, G_IO_ERROR, G_IO_ERROR_FAILED, "Failed to stop NTP service with /etc/rc.d/rc.ntpd.");
+        return FALSE;
+    } else {
+        use_ntp = FALSE;
+        if (timedate1 != NULL) {
+            openrc_settingsd_timedated_timedate1_set_ntp(timedate1, use_ntp);
+        }
+        return TRUE;
+    }
 #else
     return FALSE;
 #endif
@@ -366,6 +398,20 @@ service_enable (const gchar *service,
     if (service_script != NULL)
         free (service_script);
     return ret;
+#elif TIME_STYLE_SLACKWARE
+    int ret = system("/etc/rc.d/rc.ntpd start");
+    if (ret == 0) {
+        use_ntp = TRUE;
+    } else {
+        g_set_error(error, G_IO_ERROR, G_IO_ERROR_FAILED, "Failed to start NTP service with /etc/rc.d/rc.ntpd.");
+        return FALSE;
+    }
+
+    if (timedate1 != NULL) {
+        openrc_settingsd_timedated_timedate1_set_ntp(timedate1, use_ntp);
+    }
+
+    return TRUE;
 #else
     return FALSE;
 #endif