1 files changed, 93 insertions, 0 deletions
diff --git a/libdaemon/dlog.c b/libdaemon/dlog.c
new file mode 100644
index 0000000..1cc0566
--- /dev/null
+++ b/libdaemon/dlog.c
@@ -0,0 +1,93 @@
+/***
+  This file is part of libdaemon.
+
+  Copyright 2003-2008 Lennart Poettering
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+  SOFTWARE.
+
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+#include "dlog.h"
+
+enum daemon_log_flags daemon_log_use = DAEMON_LOG_AUTO|DAEMON_LOG_STDERR;
+const char* daemon_log_ident = NULL;
+
+static int daemon_verbosity_level = LOG_INFO;
+
+void daemon_set_verbosity(int verbosity_prio) {
+
+    /* Allow using negative verbosity levels to hide _all_ messages */
+    if (verbosity_prio > 0 && (verbosity_prio & LOG_PRIMASK) != LOG_PRIMASK)
+        daemon_log(LOG_ERR, "The value %d is not a valid priority value", verbosity_prio);
+
+    daemon_verbosity_level = verbosity_prio & LOG_PRIMASK;
+}
+
+void daemon_logv(int prio, const char* template, va_list arglist) {
+    int saved_errno;
+
+    saved_errno = errno;
+
+    if (daemon_log_use & DAEMON_LOG_SYSLOG) {
+        openlog(daemon_log_ident ? daemon_log_ident : "UNKNOWN", LOG_PID, LOG_DAEMON);
+        vsyslog(prio | LOG_DAEMON, template, arglist);
+    }
+
+    if (prio > daemon_verbosity_level)
+        goto end_daemon_logv;
+
+    if (daemon_log_use & DAEMON_LOG_STDERR) {
+        vfprintf(stderr, template, arglist);
+        fprintf(stderr, "\n");
+    }
+
+    if (daemon_log_use & DAEMON_LOG_STDOUT) {
+        vfprintf(stdout, template, arglist);
+        fprintf(stdout, "\n");
+    }
+
+ end_daemon_logv:
+    errno = saved_errno;
+}
+
+void daemon_log(int prio, const char* template, ...) {
+    va_list arglist;
+
+    va_start(arglist, template);
+    daemon_logv(prio, template, arglist);
+    va_end(arglist);
+}
+
+char *daemon_ident_from_argv0(char *argv0) {
+    char *p;
+
+    if ((p = strrchr(argv0, '/')))
+        return p+1;
+
+    return argv0;
+}