[PATCH] virconf.c: Refactor cleanup and remove VIR_FREE

[Yi Li <yili@xxxxxxxxxxx>]

Switch to using the 'g_auto*' helpers.

Signed-off-by: Yi Li <yili@xxxxxxxxxxx>
---
 src/util/virconf.c | 47 +++++++++++++++-------------------------------
 1 file changed, 15 insertions(+), 32 deletions(-)

diff --git a/src/util/virconf.c b/src/util/virconf.c
index 16107bce96..17fbea2397 100644
--- a/src/util/virconf.c
+++ b/src/util/virconf.c
@@ -573,7 +573,7 @@ static int
 virConfParseComment(virConfParserCtxtPtr ctxt)
 {
     const char *base;
-    char *comm;
+    g_autofree char *comm;
 
     if (CUR != '#')
         return -1;
@@ -581,10 +581,9 @@ virConfParseComment(virConfParserCtxtPtr ctxt)
     base = ctxt->cur;
     while ((ctxt->cur < ctxt->end) && (!IS_EOL(CUR))) NEXT;
     comm = g_strndup(base, ctxt->cur - base);
-    if (virConfAddEntry(ctxt->conf, NULL, NULL, comm) == NULL) {
-        VIR_FREE(comm);
+    if (virConfAddEntry(ctxt->conf, NULL, NULL, comm) == NULL)
         return -1;
-    }
+
     return 0;
 }
 
@@ -626,9 +625,9 @@ static int
 virConfParseStatement(virConfParserCtxtPtr ctxt)
 {
     const char *base;
-    char *name;
+    g_autofree char *name;
     virConfValuePtr value;
-    char *comm = NULL;
+    g_autofree char *comm = NULL;
 
     SKIP_BLANKS_AND_EOL;
     if (CUR == '#')
@@ -639,16 +638,13 @@ virConfParseStatement(virConfParserCtxtPtr ctxt)
     SKIP_BLANKS;
     if (CUR != '=') {
         virConfError(ctxt, VIR_ERR_CONF_SYNTAX, _("expecting an assignment"));
-        VIR_FREE(name);
         return -1;
     }
     NEXT;
     SKIP_BLANKS;
     value = virConfParseValue(ctxt);
-    if (value == NULL) {
-        VIR_FREE(name);
+    if (value == NULL)
         return -1;
-    }
     SKIP_BLANKS;
     if (CUR == '#') {
         NEXT;
@@ -657,9 +653,7 @@ virConfParseStatement(virConfParserCtxtPtr ctxt)
         comm = g_strndup(base, ctxt->cur - base);
     }
     if (virConfAddEntry(ctxt->conf, name, value, comm) == NULL) {
-        VIR_FREE(name);
         virConfFreeValue(value);
-        VIR_FREE(comm);
         return -1;
     }
     return 0;
@@ -724,7 +718,7 @@ virConfParse(const char *filename, const char *content, int len,
 virConfPtr
 virConfReadFile(const char *filename, unsigned int flags)
 {
-    char *content;
+    g_autofree char *content;
     int len;
     virConfPtr conf;
 
@@ -740,7 +734,6 @@ virConfReadFile(const char *filename, unsigned int flags)
 
     conf = virConfParse(filename, content, len, flags);
 
-    VIR_FREE(content);
 
     return conf;
 }
@@ -1412,7 +1405,7 @@ virConfWriteFile(const char *filename, virConfPtr conf)
     virConfEntryPtr cur;
     int ret;
     int fd;
-    char *content;
+    g_autofree char *content;
     unsigned int use;
 
     if (conf == NULL)
@@ -1433,7 +1426,6 @@ virConfWriteFile(const char *filename, virConfPtr conf)
     use = virBufferUse(&buf);
     content = virBufferContentAndReset(&buf);
     ret = safewrite(fd, content, use);
-    VIR_FREE(content);
     VIR_FORCE_CLOSE(fd);
     if (ret != (int)use) {
         virConfError(NULL, VIR_ERR_WRITE_FAILED, _("failed to save content"));
@@ -1461,7 +1453,7 @@ virConfWriteMem(char *memory, int *len, virConfPtr conf)
 {
     g_auto(virBuffer) buf = VIR_BUFFER_INITIALIZER;
     virConfEntryPtr cur;
-    char *content;
+    g_autofree char *content;
     unsigned int use;
 
     if ((memory == NULL) || (len == NULL) || (*len <= 0) || (conf == NULL))
@@ -1478,11 +1470,9 @@ virConfWriteMem(char *memory, int *len, virConfPtr conf)
 
     if ((int)use >= *len) {
         *len = (int)use;
-        VIR_FREE(content);
         return -1;
     }
     memcpy(memory, content, use);
-    VIR_FREE(content);
     *len = use;
     return use;
 }
@@ -1505,26 +1495,19 @@ virConfLoadConfigPath(const char *name)
 int
 virConfLoadConfig(virConfPtr *conf, const char *name)
 {
-    char *path = NULL;
-    int ret = -1;
+    g_autofree char *path = NULL;
 
     *conf = NULL;
 
     if (!(path = virConfLoadConfigPath(name)))
-        goto cleanup;
+        return -1;
 
-    if (!virFileExists(path)) {
-        ret = 0;
-        goto cleanup;
-    }
+    if (!virFileExists(path))
+        return 0;
 
     VIR_DEBUG("Loading config file '%s'", path);
     if (!(*conf = virConfReadFile(path, 0)))
-        goto cleanup;
-
-    ret = 0;
+        return -1;
 
- cleanup:
-    VIR_FREE(path);
-    return ret;
+    return 0;
 }
-- 
2.25.3