During development I like to have the --enable-debug flag enabled all the
time because its very handy at times. I don't want it spewing to stderr
all the time though, just because I turned on the compile option. So this
patch adds an env variable 'LIBVIRT_DEBUG' which controls whether it is
chatty or not. So with this patch you can use --enable-debug all the time,
and just run
LIBVIRT_DEBUG=1 ./src/virsh ....
to turn it on for a particular test, or likewise for the daemon
LIBVIRT_DEBUG=1 ./qemud/libvirtd
Dan.
libvirt.c | 64 +++++++++++++++++++++++++++++++++++---------------------------
1 file changed, 37 insertions(+), 27 deletions(-)
diff -r c747561694fc src/libvirt.c
--- a/src/libvirt.c Tue Jan 08 23:52:20 2008 -0500
+++ b/src/libvirt.c Tue Jan 08 23:53:57 2008 -0500
@@ -59,10 +59,11 @@ static int initialized = 0;
* are printed to stderr for debugging.
*/
#ifdef ENABLE_DEBUG
+static int debugFlag = 0;
#define DEBUG(fs,...) \
- fprintf (stderr, "libvirt: %s (" fs ")\n", __func__, __VA_ARGS__)
+ do { if (debugFlag) fprintf (stderr, "libvirt: %s (" fs ")\n", __func__, __VA_ARGS__); } while (0)
#define DEBUG0 \
- fprintf (stderr, "libvirt: %s ()\n", __func__)
+ do { if (debugFlag) fprintf (stderr, "libvirt: %s ()\n", __func__); } while (0)
#else
#define DEBUG0
#define DEBUG(fs,...)
@@ -179,10 +180,20 @@ int
int
virInitialize(void)
{
- DEBUG0;
+#ifdef ENABLE_DEBUG
+ char *debugEnv;
+#endif
if (initialized)
return(0);
initialized = 1;
+
+#ifdef ENABLE_DEBUG
+ debugEnv = getenv("LIBVIRT_DEBUG");
+ if (debugEnv && *debugEnv)
+ debugFlag = 1;
+#endif
+
+ DEBUG0;
#if HAVE_WINSOCK2_H
if (winsock_init () == -1) return -1;
@@ -543,18 +554,17 @@ do_open (const char *name,
}
#ifdef ENABLE_DEBUG
- fprintf (stderr,
- "libvirt: do_open: name \"%s\" to URI components:\n"
- " scheme %s\n"
- " opaque %s\n"
- " authority %s\n"
- " server %s\n"
- " user %s\n"
- " port %d\n"
- " path %s\n",
- name,
- uri->scheme, uri->opaque, uri->authority, uri->server,
- uri->user, uri->port, uri->path);
+ DEBUG("libvirt: do_open: name \"%s\" to URI components:\n"
+ " scheme %s\n"
+ " opaque %s\n"
+ " authority %s\n"
+ " server %s\n"
+ " user %s\n"
+ " port %d\n"
+ " path %s\n",
+ name,
+ uri->scheme, uri->opaque, uri->authority, uri->server,
+ uri->user, uri->port, uri->path);
#endif
ret->name = strdup (name);
@@ -565,16 +575,16 @@ do_open (const char *name,
for (i = 0; i < virDriverTabCount; i++) {
#ifdef ENABLE_DEBUG
- fprintf (stderr, "libvirt: do_open: trying driver %d (%s) ...\n",
- i, virDriverTab[i]->name);
+ DEBUG("libvirt: do_open: trying driver %d (%s) ...\n",
+ i, virDriverTab[i]->name);
#endif
res = virDriverTab[i]->open (ret, uri, auth, flags);
#ifdef ENABLE_DEBUG
- fprintf (stderr, "libvirt: do_open: driver %d %s returned %s\n",
- i, virDriverTab[i]->name,
- res == VIR_DRV_OPEN_SUCCESS ? "SUCCESS" :
- (res == VIR_DRV_OPEN_DECLINED ? "DECLINED" :
- (res == VIR_DRV_OPEN_ERROR ? "ERROR" : "unknown status")));
+ DEBUG("libvirt: do_open: driver %d %s returned %s\n",
+ i, virDriverTab[i]->name,
+ res == VIR_DRV_OPEN_SUCCESS ? "SUCCESS" :
+ (res == VIR_DRV_OPEN_DECLINED ? "DECLINED" :
+ (res == VIR_DRV_OPEN_ERROR ? "ERROR" : "unknown status")));
#endif
if (res == VIR_DRV_OPEN_ERROR) goto failed;
else if (res == VIR_DRV_OPEN_SUCCESS) {
@@ -592,11 +602,11 @@ do_open (const char *name,
for (i = 0; i < virNetworkDriverTabCount; i++) {
res = virNetworkDriverTab[i]->open (ret, uri, auth, flags);
#ifdef ENABLE_DEBUG
- fprintf (stderr, "libvirt: do_open: network driver %d %s returned %s\n",
- i, virNetworkDriverTab[i]->name,
- res == VIR_DRV_OPEN_SUCCESS ? "SUCCESS" :
- (res == VIR_DRV_OPEN_DECLINED ? "DECLINED" :
- (res == VIR_DRV_OPEN_ERROR ? "ERROR" : "unknown status")));
+ DEBUG("libvirt: do_open: network driver %d %s returned %s\n",
+ i, virNetworkDriverTab[i]->name,
+ res == VIR_DRV_OPEN_SUCCESS ? "SUCCESS" :
+ (res == VIR_DRV_OPEN_DECLINED ? "DECLINED" :
+ (res == VIR_DRV_OPEN_ERROR ? "ERROR" : "unknown status")));
#endif
if (res == VIR_DRV_OPEN_ERROR) {
if (STREQ(virNetworkDriverTab[i]->name, "remote")) {
Regards,
Dan.
--
|=- Red Hat, Engineering, Emerging Technologies, Boston. +1 978 392 2496 -=|
|=- Perl modules: http://search.cpan.org/~danberr/ -=|
|=- Projects: http://freshmeat.net/~danielpb/ -=|
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