auto import from //depot/cupcake/@135843

1 files changed, 89 insertions, 0 deletions

diff --git a/logger.c b/logger.c
new file mode 100644
index 0000000..15c6cf7
--- /dev/null
+++ b/logger.c
@@ -0,0 +1,89 @@
+/* 
+ * dhcpcd - DHCP client daemon
+ * Copyright 2006-2008 Roy Marples <roy@marples.name>
+ * All rights reserved
+
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <ctype.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+
+#include "common.h"
+#include "logger.h"
+
+static int loglevel = LOG_INFO;
+static char logprefix[12] = {0};
+
+void
+setloglevel(int level)
+{
+	loglevel = level;
+}
+
+void
+setlogprefix(const char *prefix)
+{
+	strlcpy(logprefix, prefix, sizeof(logprefix));
+}
+
+void
+logger(int level, const char *fmt, ...)
+{
+	va_list p, p2;
+	FILE *f = stderr;
+	size_t len, fmt2len;
+	char *fmt2, *pf;
+
+	va_start(p, fmt);
+	va_copy(p2, p);
+
+	if (level <= LOG_ERR || level <= loglevel) {
+		fprintf(f, "%s", logprefix);
+		vfprintf(f, fmt, p);
+		fputc('\n', f);
+	}
+
+	if (level < LOG_DEBUG || level <= loglevel) {
+		len = strlen(logprefix);
+		fmt2len = strlen(fmt) + len + 1;
+		fmt2 = pf = malloc(sizeof(char) * fmt2len);
+		if (fmt2) {
+			strlcpy(pf, logprefix, fmt2len);
+			pf += len;
+			strlcpy(pf, fmt, fmt2len - len);
+			vsyslog(level, fmt2, p2);
+			free(fmt2);
+		} else {
+			vsyslog(level, fmt, p2);
+			syslog(LOG_ERR, "logger: memory exhausted");
+			exit(EXIT_FAILURE);
+		}
+	}
+
+	va_end(p2);
+	va_end(p);
+}