Would be really nice to have this in stretch.
Not sure if there is a safe way to leave the syslog open. The following
patch works for me (--log syslog).
diff --git a/lib/dpkg/log.c b/lib/dpkg/log.c
index 3079f3c..371ec5e 100644
--- a/lib/dpkg/log.c
+++ b/lib/dpkg/log.c
@@ -26,6 +26,7 @@
#include <unistd.h>
#include <stdarg.h>
#include <stdio.h>
+#include <syslog.h>
#include <dpkg/i18n.h>
#include <dpkg/dpkg.h>
@@ -46,27 +47,35 @@ log_message(const char *fmt, ...)
if (!log_file)
return;
- if (!logfd) {
- logfd = fopen(log_file, "a");
- if (!logfd) {
- notice(_("could not open log '%s': %s"),
- log_file, strerror(errno));
- log_file = NULL;
- return;
- }
- setlinebuf(logfd);
- setcloexec(fileno(logfd), log_file);
- }
-
va_start(args, fmt);
varbuf_reset(&log);
varbuf_vprintf(&log, fmt, args);
va_end(args);
- time(&now);
- strftime(time_str, sizeof(time_str), "%Y-%m-%d %H:%M:%S",
- localtime(&now));
- fprintf(logfd, "%s %s\n", time_str, log.buf);
+ if (strcmp(log_file, "syslog") == 0) {
+ /* log to syslog */
+ openlog("dpkg", LOG_PID, LOG_USER);
+ syslog(LOG_INFO, "%s", log.buf);
+ closelog();
+ } else {
+ /* log to file */
+ if (!logfd) {
+ logfd = fopen(log_file, "a");
+ if (!logfd) {
+ notice(_("could not open log '%s': %s"),
+ log_file, strerror(errno));
+ log_file = NULL;
+ return;
+ }
+ setlinebuf(logfd);
+ setcloexec(fileno(logfd), log_file);
+ }
+
+ time(&now);
+ strftime(time_str, sizeof(time_str), "%Y-%m-%d %H:%M:%S",
+ localtime(&now));
+ fprintf(logfd, "%s %s\n", time_str, log.buf);
+ }
}
struct pipef {
