[libvirt] [PATCH v2 03/10] daemon: Hook up the virLog{Get, Set}DefaultOutput to the daemon's init routine
Erik Skultety
eskultet at redhat.com
Fri Nov 25 13:12:01 UTC 2016
Now that virLog{Get,Set}DefaultOutput routines are introduced we can wire them
up to the daemon's logging initialization code. Also, change the order of
operations a bit so that we still strictly honor our precedence of settings:
cmdline > env > config now that outputs and filters are not appended anymore.
Signed-off-by: Erik Skultety <eskultet at redhat.com>
---
daemon/libvirtd.c | 96 +++++++----------------------------------------
src/locking/lock_daemon.c | 90 +++++++-------------------------------------
src/logging/log_daemon.c | 92 +++++++--------------------------------------
3 files changed, 40 insertions(+), 238 deletions(-)
diff --git a/daemon/libvirtd.c b/daemon/libvirtd.c
index 3902a8b..b2e89fd 100644
--- a/daemon/libvirtd.c
+++ b/daemon/libvirtd.c
@@ -675,103 +675,33 @@ daemonSetupLogging(struct daemonConfig *config,
* Libvirtd's order of precedence is:
* cmdline > environment > config
*
- * In order to achieve this, we must process configuration in
- * different order for the log level versus the filters and
- * outputs. Because filters and outputs append, we have to look at
- * the environment first and then only check the config file if
- * there was no result from the environment. The default output is
- * then applied only if there was no setting from either of the
- * first two. Because we don't have a way to determine if the log
- * level has been set, we must process variables in the opposite
+ * The default output is applied only if there was no setting from either
+ * the config or the environment. Because we don't have a way to determine
+ * if the log level has been set, we must process variables in the opposite
* order, each one overriding the previous.
*/
if (config->log_level != 0)
virLogSetDefaultPriority(config->log_level);
+ if (virLogSetDefaultOutput("libvirtd.log", godaemon, privileged) < 0)
+ return -1;
+
+ /* In case the config is empty, the filters become empty and outputs will
+ * be set to default
+ */
+ virLogSetFilters(config->log_filters);
+ virLogSetOutputs(config->log_outputs);
+
+ /* If there are some environment variables defined, use those instead */
virLogSetFromEnv();
- if (virLogGetNbFilters() == 0)
- virLogSetFilters(config->log_filters);
-
- if (virLogGetNbOutputs() == 0)
- virLogSetOutputs(config->log_outputs);
-
/*
* Command line override for --verbose
*/
if ((verbose) && (virLogGetDefaultPriority() > VIR_LOG_INFO))
virLogSetDefaultPriority(VIR_LOG_INFO);
- /*
- * If no defined outputs, and either running
- * as daemon or not on a tty, then first try
- * to direct it to the systemd journal
- * (if it exists)....
- */
- if (virLogGetNbOutputs() == 0 &&
- (godaemon || !isatty(STDIN_FILENO))) {
- char *tmp;
- if (access("/run/systemd/journal/socket", W_OK) >= 0) {
- virLogPriority priority = virLogGetDefaultPriority();
-
- /* By default we don't want to log too much stuff into journald as
- * it may employ rate limiting and thus block libvirt execution. */
- if (priority == VIR_LOG_DEBUG)
- priority = VIR_LOG_INFO;
-
- if (virAsprintf(&tmp, "%d:journald", priority) < 0)
- goto error;
- virLogSetOutputs(tmp);
- VIR_FREE(tmp);
- }
- }
-
- /*
- * otherwise direct to libvirtd.log when running
- * as daemon. Otherwise the default output is stderr.
- */
- if (virLogGetNbOutputs() == 0) {
- char *tmp = NULL;
-
- if (godaemon) {
- if (privileged) {
- if (virAsprintf(&tmp, "%d:file:%s/log/libvirt/libvirtd.log",
- virLogGetDefaultPriority(),
- LOCALSTATEDIR) == -1)
- goto error;
- } else {
- char *logdir = virGetUserCacheDirectory();
- mode_t old_umask;
-
- if (!logdir)
- goto error;
-
- old_umask = umask(077);
- if (virFileMakePath(logdir) < 0) {
- umask(old_umask);
- goto error;
- }
- umask(old_umask);
-
- if (virAsprintf(&tmp, "%d:file:%s/libvirtd.log",
- virLogGetDefaultPriority(), logdir) == -1) {
- VIR_FREE(logdir);
- goto error;
- }
- VIR_FREE(logdir);
- }
- } else {
- if (virAsprintf(&tmp, "%d:stderr", virLogGetDefaultPriority()) < 0)
- goto error;
- }
- virLogSetOutputs(tmp);
- VIR_FREE(tmp);
- }
-
return 0;
-
- error:
- return -1;
}
diff --git a/src/locking/lock_daemon.c b/src/locking/lock_daemon.c
index 9ee818e..881af11 100644
--- a/src/locking/lock_daemon.c
+++ b/src/locking/lock_daemon.c
@@ -460,97 +460,33 @@ virLockDaemonSetupLogging(virLockDaemonConfigPtr config,
* Libvirtd's order of precedence is:
* cmdline > environment > config
*
- * In order to achieve this, we must process configuration in
- * different order for the log level versus the filters and
- * outputs. Because filters and outputs append, we have to look at
- * the environment first and then only check the config file if
- * there was no result from the environment. The default output is
- * then applied only if there was no setting from either of the
- * first two. Because we don't have a way to determine if the log
- * level has been set, we must process variables in the opposite
+ * The default output is applied only if there was no setting from either
+ * the config or the environment. Because we don't have a way to determine
+ * if the log level has been set, we must process variables in the opposite
* order, each one overriding the previous.
*/
if (config->log_level != 0)
virLogSetDefaultPriority(config->log_level);
+ if (virLogSetDefaultOutput("virtlockd.log", godaemon, privileged) < 0)
+ return -1;
+
+ /* In case the config is empty, the filters become empty and outputs will
+ * be set to default
+ */
+ virLogSetFilters(config->log_filters);
+ virLogSetOutputs(config->log_outputs);
+
+ /* If there are some environment variables defined, use those instead */
virLogSetFromEnv();
- if (virLogGetNbFilters() == 0)
- virLogSetFilters(config->log_filters);
-
- if (virLogGetNbOutputs() == 0)
- virLogSetOutputs(config->log_outputs);
-
/*
* Command line override for --verbose
*/
if ((verbose) && (virLogGetDefaultPriority() > VIR_LOG_INFO))
virLogSetDefaultPriority(VIR_LOG_INFO);
- /*
- * If no defined outputs, and either running
- * as daemon or not on a tty, then first try
- * to direct it to the systemd journal
- * (if it exists)....
- */
- if (virLogGetNbOutputs() == 0 &&
- (godaemon || !isatty(STDIN_FILENO))) {
- char *tmp;
- if (access("/run/systemd/journal/socket", W_OK) >= 0) {
- if (virAsprintf(&tmp, "%d:journald", virLogGetDefaultPriority()) < 0)
- goto error;
- virLogSetOutputs(tmp);
- VIR_FREE(tmp);
- }
- }
-
- /*
- * otherwise direct to libvirtd.log when running
- * as daemon. Otherwise the default output is stderr.
- */
- if (virLogGetNbOutputs() == 0) {
- char *tmp = NULL;
-
- if (godaemon) {
- if (privileged) {
- if (virAsprintf(&tmp, "%d:file:%s/log/libvirt/virtlockd.log",
- virLogGetDefaultPriority(),
- LOCALSTATEDIR) == -1)
- goto error;
- } else {
- char *logdir = virGetUserCacheDirectory();
- mode_t old_umask;
-
- if (!logdir)
- goto error;
-
- old_umask = umask(077);
- if (virFileMakePath(logdir) < 0) {
- VIR_FREE(logdir);
- umask(old_umask);
- goto error;
- }
- umask(old_umask);
-
- if (virAsprintf(&tmp, "%d:file:%s/virtlockd.log",
- virLogGetDefaultPriority(), logdir) == -1) {
- VIR_FREE(logdir);
- goto error;
- }
- VIR_FREE(logdir);
- }
- } else {
- if (virAsprintf(&tmp, "%d:stderr", virLogGetDefaultPriority()) < 0)
- goto error;
- }
- virLogSetOutputs(tmp);
- VIR_FREE(tmp);
- }
-
return 0;
-
- error:
- return -1;
}
diff --git a/src/logging/log_daemon.c b/src/logging/log_daemon.c
index a9aebdb..793811e 100644
--- a/src/logging/log_daemon.c
+++ b/src/logging/log_daemon.c
@@ -385,100 +385,36 @@ virLogDaemonSetupLogging(virLogDaemonConfigPtr config,
virLogReset();
/*
- * virtlogd's order of precedence is:
+ * Libvirtd's order of precedence is:
* cmdline > environment > config
*
- * In order to achieve this, we must process configuration in
- * different order for the log level versus the filters and
- * outputs. Because filters and outputs append, we have to look at
- * the environment first and then only check the config file if
- * there was no result from the environment. The default output is
- * then applied only if there was no setting from either of the
- * first two. Because we don't have a way to determine if the log
- * level has been set, we must process variables in the opposite
+ * The default output is applied only if there was no setting from either
+ * the config or the environment. Because we don't have a way to determine
+ * if the log level has been set, we must process variables in the opposite
* order, each one overriding the previous.
*/
if (config->log_level != 0)
virLogSetDefaultPriority(config->log_level);
+ if (virLogSetDefaultOutput("virtlogd.log", godaemon, privileged) < 0)
+ return -1;
+
+ /* In case the config is empty, the filters become empty and outputs will
+ * be set to default
+ */
+ virLogSetFilters(config->log_filters);
+ virLogSetOutputs(config->log_outputs);
+
+ /* If there are some environment variables defined, use those instead */
virLogSetFromEnv();
- if (virLogGetNbFilters() == 0)
- virLogSetFilters(config->log_filters);
-
- if (virLogGetNbOutputs() == 0)
- virLogSetOutputs(config->log_outputs);
-
/*
* Command line override for --verbose
*/
if ((verbose) && (virLogGetDefaultPriority() > VIR_LOG_INFO))
virLogSetDefaultPriority(VIR_LOG_INFO);
- /*
- * If no defined outputs, and either running
- * as daemon or not on a tty, then first try
- * to direct it to the systemd journal
- * (if it exists)....
- */
- if (virLogGetNbOutputs() == 0 &&
- (godaemon || !isatty(STDIN_FILENO))) {
- char *tmp;
- if (access("/run/systemd/journal/socket", W_OK) >= 0) {
- if (virAsprintf(&tmp, "%d:journald", virLogGetDefaultPriority()) < 0)
- goto error;
- virLogSetOutputs(tmp);
- VIR_FREE(tmp);
- }
- }
-
- /*
- * otherwise direct to libvirtd.log when running
- * as daemon. Otherwise the default output is stderr.
- */
- if (virLogGetNbOutputs() == 0) {
- char *tmp = NULL;
-
- if (godaemon) {
- if (privileged) {
- if (virAsprintf(&tmp, "%d:file:%s/log/libvirt/virtlogd.log",
- virLogGetDefaultPriority(),
- LOCALSTATEDIR) == -1)
- goto error;
- } else {
- char *logdir = virGetUserCacheDirectory();
- mode_t old_umask;
-
- if (!logdir)
- goto error;
-
- old_umask = umask(077);
- if (virFileMakePath(logdir) < 0) {
- umask(old_umask);
- VIR_FREE(logdir);
- goto error;
- }
- umask(old_umask);
-
- if (virAsprintf(&tmp, "%d:file:%s/virtlogd.log",
- virLogGetDefaultPriority(), logdir) == -1) {
- VIR_FREE(logdir);
- goto error;
- }
- VIR_FREE(logdir);
- }
- } else {
- if (virAsprintf(&tmp, "%d:stderr", virLogGetDefaultPriority()) < 0)
- goto error;
- }
- virLogSetOutputs(tmp);
- VIR_FREE(tmp);
- }
-
return 0;
-
- error:
- return -1;
}
--
2.5.5
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