[libvirt] [PATCH 03/29] logging: pass binary name not logfile name when enabling logging

[Daniel P. Berrangé]

Instead of having each caller pass in the desired logfile name, pass in
the binary name instead. The logging code can then just derive a logfile
name by appending ".log".

Signed-off-by: Daniel P. Berrangé <berrange at redhat.com>
---
 src/locking/lock_daemon.c  |  2 +-
 src/logging/log_daemon.c   |  2 +-
 src/remote/remote_daemon.c |  2 +-
 src/util/virlog.c          | 20 ++++++++++----------
 4 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/src/locking/lock_daemon.c b/src/locking/lock_daemon.c
index bc2fb4a7fb..7cdcd61722 100644
--- a/src/locking/lock_daemon.c
+++ b/src/locking/lock_daemon.c
@@ -532,7 +532,7 @@ virLockDaemonSetupLogging(virLockDaemonConfigPtr config,
     /* Define the default output. This is only applied if there was no setting
      * from either the config or the environment.
      */
-    if (virLogSetDefaultOutput("virtlockd.log", godaemon, privileged) < 0)
+    if (virLogSetDefaultOutput("virtlockd", godaemon, privileged) < 0)
         return -1;
 
     if (virLogGetNbOutputs() == 0)
diff --git a/src/logging/log_daemon.c b/src/logging/log_daemon.c
index 014596b280..c8de7aa687 100644
--- a/src/logging/log_daemon.c
+++ b/src/logging/log_daemon.c
@@ -467,7 +467,7 @@ virLogDaemonSetupLogging(virLogDaemonConfigPtr config,
     /* Define the default output. This is only applied if there was no setting
      * from either the config or the environment.
      */
-    if (virLogSetDefaultOutput("virtlogd.log", godaemon, privileged) < 0)
+    if (virLogSetDefaultOutput("virtlogd", godaemon, privileged) < 0)
         return -1;
 
     if (virLogGetNbOutputs() == 0)
diff --git a/src/remote/remote_daemon.c b/src/remote/remote_daemon.c
index 0dabd3dff8..574c50075f 100644
--- a/src/remote/remote_daemon.c
+++ b/src/remote/remote_daemon.c
@@ -605,7 +605,7 @@ daemonSetupLogging(struct daemonConfig *config,
     /* Define the default output. This is only applied if there was no setting
      * from either the config or the environment.
      */
-    if (virLogSetDefaultOutput("libvirtd.log", godaemon, privileged) < 0)
+    if (virLogSetDefaultOutput("libvirtd", godaemon, privileged) < 0)
         return -1;
 
     if (virLogGetNbOutputs() == 0)
diff --git a/src/util/virlog.c b/src/util/virlog.c
index 248ce19902..da433878df 100644
--- a/src/util/virlog.c
+++ b/src/util/virlog.c
@@ -175,7 +175,7 @@ virLogSetDefaultOutputToJournald(void)
 
 
 static int
-virLogSetDefaultOutputToFile(const char *filename, bool privileged)
+virLogSetDefaultOutputToFile(const char *binary, bool privileged)
 {
     int ret = -1;
     char *logdir = NULL;
@@ -183,8 +183,8 @@ virLogSetDefaultOutputToFile(const char *filename, bool privileged)
 
     if (privileged) {
         if (virAsprintf(&virLogDefaultOutput,
-                        "%d:file:%s/log/libvirt/%s", virLogDefaultPriority,
-                        LOCALSTATEDIR, filename) < 0)
+                        "%d:file:%s/log/libvirt/%s.log", virLogDefaultPriority,
+                        LOCALSTATEDIR, binary) < 0)
             goto cleanup;
     } else {
         if (!(logdir = virGetUserCacheDirectory()))
@@ -197,8 +197,8 @@ virLogSetDefaultOutputToFile(const char *filename, bool privileged)
         }
         umask(old_umask);
 
-        if (virAsprintf(&virLogDefaultOutput, "%d:file:%s/%s",
-                        virLogDefaultPriority, logdir, filename) < 0)
+        if (virAsprintf(&virLogDefaultOutput, "%d:file:%s/%s.log",
+                        virLogDefaultPriority, logdir, binary) < 0)
             goto cleanup;
     }
 
@@ -211,19 +211,19 @@ virLogSetDefaultOutputToFile(const char *filename, bool privileged)
 
 /*
  * virLogSetDefaultOutput:
- * @filename: the file that the output should be redirected to (only needed
- *            when @godaemon equals true
+ * @binary: the binary for which logging is performed. The log file name
+ *          will be derived from the binary name, with ".log" appended.
  * @godaemon: whether we're running daemonized
  * @privileged: whether we're running with root privileges or not (session)
  *
  * Decides on what the default output (journald, file, stderr) should be
- * according to @filename, @godaemon, @privileged. This function should be run
+ * according to @binary, @godaemon, @privileged. This function should be run
  * exactly once at daemon startup, so no locks are used.
  *
  * Returns 0 on success, -1 in case of a failure.
  */
 int
-virLogSetDefaultOutput(const char *filename, bool godaemon, bool privileged)
+virLogSetDefaultOutput(const char *binary, bool godaemon, bool privileged)
 {
     bool have_journald = access("/run/systemd/journal/socket", W_OK) >= 0;
 
@@ -237,7 +237,7 @@ virLogSetDefaultOutput(const char *filename, bool godaemon, bool privileged)
         return virLogSetDefaultOutputToStderr();
     }
 
-    return virLogSetDefaultOutputToFile(filename, privileged);
+    return virLogSetDefaultOutputToFile(binary, privileged);
 }
 
 
-- 
2.21.0