More g_* functions usage

Follow coding standard

sesman/sessionrecord.c

@@ -60,27 +60,29 @@ add_xtmp_entry(int pid, const char *line, const char *user, const char *rhostnam
      *
      * So the IP is the string up the two last colons
      */
-    int i = strlen(rhostname) - 1;
-    while ((i>0) && (rhostname[i] != ':')) {
+    int i = g_strlen(rhostname) - 1;
+    while ((i>0) && (rhostname[i] != ':'))
+    {
         i--;
     }
     i--;
-    while ((i>0) && (rhostname[i] != ':')) {
+    while ((i>0) && (rhostname[i] != ':'))
+    {
         i--;
     }
 
     hostname = g_strndup(rhostname, i);
 
-    memset(&ut, 0, sizeof(ut));
+    g_memset(&ut, 0, sizeof(ut));
 
     ut.ut_type=state;
     ut.ut_pid = pid;
     gettimeofday(&tv, NULL);
     ut.ut_tv.tv_sec = tv.tv_sec;
     ut.ut_tv.tv_usec = tv.tv_usec;
-    strncpy(ut.ut_line, line , sizeof(ut.ut_line));
-    strncpy(ut.ut_user, user , sizeof(ut.ut_user));
-    strncpy(ut.ut_host, hostname, sizeof(ut.ut_host));
+    g_strncpy(ut.ut_line, line , sizeof(ut.ut_line));
+    g_strncpy(ut.ut_user, user , sizeof(ut.ut_user));
+    g_strncpy(ut.ut_host, hostname, sizeof(ut.ut_host));
 
     /* utmp */
     setutxent();

sesman/sessionrecord.h

@@ -36,16 +36,14 @@ typedef struct utmp _utmp;
 
 #define XRDP_LINE_FORMAT "xrdp:%d"
 
+int add_xtmp_entry(int pid, const char *line, const char *user, const char *rhostname, short state);
+
 /**
+ * @brief functions for adding utmp entries. one at login, one for logout
  *
- * @brief
- *
- * @param pid
+ * @param pid of the session, display, login, and hostname
  * @return 0
  */
-
-int add_xtmp_entry(int pid, const char *line, const char *user, const char *rhostname, short state);
-
 int utmp_login(int pid, int display, const char *user, const char *rhostname);
 
 int utmp_logout(int pid, int display, const char *user, const char *rhostname);