[pve-devel] [PATCH cluster 5/5] pmxcfs: status: avoid g_strdup when not needed

[Lukas Wagner]

`filename_pve2` is not accessed anymore after assigning the copy to
`filename`, so we can simply 'transfer' the ownership to `filename`
and set `filenname_pve2` to NULL.

The call to `g_free(filename_pve2)` later can handle a NULL arg, it will
simply do nothing in this case.

Signed-off-by: Lukas Wagner <l.wagner at proxmox.com>
---
 src/pmxcfs/status.c | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/src/pmxcfs/status.c b/src/pmxcfs/status.c
index e9e28bb..1b848b0 100644
--- a/src/pmxcfs/status.c
+++ b/src/pmxcfs/status.c
@@ -1371,7 +1371,8 @@ static void update_rrd_data(const char *key, gconstpointer data, size_t len) {
             use_pve2_file = 1;
 
             g_free(filename);
-            filename = g_strdup(filename_pve2);
+            filename = filename_pve2;
+            filename_pve2 = NULL;
         } else {
             // neither file exists, check for directories to decide and create file
 
@@ -1383,7 +1384,8 @@ static void update_rrd_data(const char *key, gconstpointer data, size_t len) {
                 use_pve2_file = 1;
 
                 g_free(filename);
-                filename = g_strdup(filename_pve2);
+                filename = filename_pve2;
+                filename_pve2 = NULL;
 
                 char *dir = g_path_get_dirname(filename);
                 checked_mkdir(dir, 0755);
@@ -1443,7 +1445,8 @@ static void update_rrd_data(const char *key, gconstpointer data, size_t len) {
             // old file exists, use it
             use_pve2_file = 1;
             g_free(filename);
-            filename = g_strdup(filename_pve2);
+            filename = filename_pve2;
+            filename_pve2 = NULL;
         } else {
             // neither file exists, check for directories to decide and create file
 
@@ -1455,7 +1458,8 @@ static void update_rrd_data(const char *key, gconstpointer data, size_t len) {
                 use_pve2_file = 1;
 
                 g_free(filename);
-                filename = g_strdup(filename_pve2);
+                filename = filename_pve2;
+                filename_pve2 = NULL;
 
                 int argcount = sizeof(rrd_def_vm) / sizeof(void *) - 1;
                 create_rrd_file(filename, argcount, rrd_def_vm);
@@ -1509,7 +1513,8 @@ static void update_rrd_data(const char *key, gconstpointer data, size_t len) {
         } else if (g_file_test(filename_pve2, G_FILE_TEST_EXISTS)) {
             // old file exists, use it
             g_free(filename);
-            filename = g_strdup(filename_pve2);
+            filename = filename_pve2;
+            filename_pve2 = NULL;
         } else {
             // neither file exists, check for directories to decide and create file
 
@@ -1522,7 +1527,8 @@ static void update_rrd_data(const char *key, gconstpointer data, size_t len) {
                 create_rrd_file(filename, argcount, rrd_def_storage_pve9_0);
             } else if (g_file_test(RRDDIR "/pve2-storage", G_FILE_TEST_IS_DIR)) {
                 g_free(filename);
-                filename = g_strdup(filename_pve2);
+                filename = filename_pve2;
+                filename_pve2 = NULL;
 
                 char *dir = g_path_get_dirname(filename);
                 checked_mkdir(dir, 0755);
-- 
2.47.2