target-s390x: Fix wrong comparison in interrupt handling

[qemu.git] / qemu-log.c

diff --git a/qemu-log.c b/qemu-log.c
index 396aafdf6271ada276f4a6d2b170c465809ef0a1..30c9ab01bd49d7dd41ce5d55e0e2e0dc1a665c16 100644 (file)
--- a/qemu-log.c
+++ b/qemu-log.c
@@ -18,13 +18,15 @@
  */
 
 #include "qemu-common.h"
-#include "qemu-log.h"
+#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 @@ void qemu_log_mask(int mask, const char *fmt, ...)
 /* 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" */
@@ -84,7 +88,8 @@ void qemu_set_log(int log_flags, bool use_own_buffers)
 
 void cpu_set_log_filename(const char *filename)
 {
-    logfilename = strdup(filename);
+    g_free(logfilename);
+    logfilename = g_strdup(filename);
     if (qemu_logfile) {
         fclose(qemu_logfile);
         qemu_logfile = NULL;
@@ -116,6 +121,9 @@ const CPULogItem cpu_log_items[] = {
       "show all i/o ports accesses" },
     { LOG_UNIMP, "unimp",
       "log unimplemented functionality" },
+    { LOG_GUEST_ERROR, "guest_errors",
+      "log when the guest OS does something invalid (eg accessing a\n"
+      "non-existent register)" },
     { 0, NULL, NULL },
 };