lib: Add ability to know if we have read anything in

When reading the config file add an ability to know
if we have properly read in anything.  So that a daemon
can make fallback plans.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>

2 files changed, 9 insertions, 3 deletions

diff --git a/lib/vty.c b/lib/vty.c
index 280b2ace51..e9d1f2e323 100644
--- a/lib/vty.c
+++ b/lib/vty.c
@@ -2462,12 +2462,13 @@ static FILE *vty_use_backup_config(const char *fullpath)
 }
 
 /* Read up configuration file from file_name. */
-void vty_read_config(const char *config_file, char *config_default_dir)
+bool vty_read_config(const char *config_file, char *config_default_dir)
 {
 	char cwd[MAXPATHLEN];
 	FILE *confp = NULL;
 	const char *fullpath;
 	char *tmp = NULL;
+	bool read_success = false;
 
 	/* If -f flag specified. */
 	if (config_file != NULL) {
@@ -2525,8 +2526,10 @@ void vty_read_config(const char *config_file, char *config_default_dir)
 
 		if (strstr(config_default_dir, "vtysh") == NULL) {
 			ret = stat(integrate_default, &conf_stat);
-			if (ret >= 0)
+			if (ret >= 0) {
+				read_success = true;
 				goto tmp_free_and_out;
+			}
 		}
 #endif /* VTYSH */
 		confp = fopen(config_default_dir, "r");
@@ -2550,6 +2553,7 @@ void vty_read_config(const char *config_file, char *config_default_dir)
 	}
 
 	vty_read_file(confp);
+	read_success = true;
 
 	fclose(confp);
 
@@ -2558,6 +2562,8 @@ void vty_read_config(const char *config_file, char *config_default_dir)
 tmp_free_and_out:
 	if (tmp)
 		XFREE(MTYPE_TMP, tmp);
+
+	return read_success;
 }
 
 /* Small utility function which output log to the VTY. */
diff --git a/lib/vty.h b/lib/vty.h
index d14ddf5908..b55abf2204 100644
--- a/lib/vty.h
+++ b/lib/vty.h
@@ -242,7 +242,7 @@ extern void vty_frame(struct vty *, const char *, ...) PRINTF_ATTRIBUTE(2, 3);
 extern void vty_endframe(struct vty *, const char *);
 bool vty_set_include(struct vty *vty, const char *regexp);
 
-extern void vty_read_config(const char *, char *);
+extern bool vty_read_config(const char *, char *);
 extern void vty_time_print(struct vty *, int);
 extern void vty_serv_sock(const char *, unsigned short, const char *);
 extern void vty_close(struct vty *);