commit 40a50b0a73d185c85cf62023f07e3091861081bb
author Markus Armbruster <armbru@redhat.com> Tue Jan 22 11:08:03 2013 +0100
committer Stefan Hajnoczi <stefanha@redhat.com> Wed Jan 30 11:14:46 2013 +0100
tree 2f556e6f3e0e2deb88e159b487a1d889ea5ef6c1
parent 636e0f27c6675839dc43d4c7613dfefc222234eb

qemu-log: Plug trivial memory leak in cpu_set_log_filename()

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

qemu-log.c

diff --git a/qemu-log.c b/qemu-log.c
index 64a1b88..30c9ab0 100644
--- a/qemu-log.c
+++ b/qemu-log.c
@@ -21,10 +21,12 @@
 #include "qemu/log.h"
 
 #ifdef WIN32
-static const char *logfilename = "qemu.log";
+#define DEFAULT_LOGFILENAME "qemu.log"
 #else
-static const char *logfilename = "/tmp/qemu.log";
+#define DEFAULT_LOGFILENAME "/tmp/qemu.log"
 #endif
+
+static char *logfilename;
 FILE *qemu_logfile;
 int qemu_loglevel;
 static int log_append = 0;
@@ -54,11 +56,13 @@
 /* enable or disable low levels log */
 void qemu_set_log(int log_flags, bool use_own_buffers)
 {
+    const char *fname = logfilename ?: DEFAULT_LOGFILENAME;
+
     qemu_loglevel = log_flags;
     if (qemu_loglevel && !qemu_logfile) {
-        qemu_logfile = fopen(logfilename, log_append ? "a" : "w");
+        qemu_logfile = fopen(fname, log_append ? "a" : "w");
         if (!qemu_logfile) {
-            perror(logfilename);
+            perror(fname);
             _exit(1);
         }
         /* must avoid mmap() usage of glibc by setting a buffer "by hand" */
@@ -84,6 +88,7 @@
 
 void cpu_set_log_filename(const char *filename)
 {
+    g_free(logfilename);
     logfilename = g_strdup(filename);
     if (qemu_logfile) {
         fclose(qemu_logfile);