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authorLennart Poettering <lennart@poettering.net>2010-11-12 01:01:04 +0100
committerLennart Poettering <lennart@poettering.net>2010-11-12 01:01:04 +0100
commitbb7df0da2d14800d4cb871ab07a9d3595990fbad (patch)
tree247a871c153b044b5b50846ebdff74858aa63c46 /src/log.c
parent7f4e08056de0184b205a20632e62db73d299937e (diff)
log: add automatic log target
Diffstat (limited to 'src/log.c')
-rw-r--r--src/log.c43
1 files changed, 26 insertions, 17 deletions
diff --git a/src/log.c b/src/log.c
index cc636a2dfa..3e7b8e93b7 100644
--- a/src/log.c
+++ b/src/log.c
@@ -196,20 +196,26 @@ int log_open(void) {
return 0;
}
- if (log_target == LOG_TARGET_SYSLOG_OR_KMSG ||
- log_target == LOG_TARGET_SYSLOG)
- if ((r = log_open_syslog()) >= 0) {
- log_close_console();
- return r;
- }
-
- if (log_target == LOG_TARGET_SYSLOG_OR_KMSG ||
- log_target == LOG_TARGET_KMSG)
- if ((r = log_open_kmsg()) >= 0) {
- log_close_syslog();
- log_close_console();
- return r;
- }
+ if (log_target != LOG_TARGET_AUTO ||
+ getpid() == 1 ||
+ isatty(STDERR_FILENO) <= 0)) {
+
+ if (log_target == LOG_TARGET_AUTO ||
+ log_target == LOG_TARGET_SYSLOG_OR_KMSG ||
+ log_target == LOG_TARGET_SYSLOG)
+ if ((r = log_open_syslog()) >= 0) {
+ log_close_console();
+ return r;
+ }
+ if (log_target == LOG_TARGET_AUTO ||
+ log_target == LOG_TARGET_SYSLOG_OR_KMSG ||
+ log_target == LOG_TARGET_KMSG)
+ if ((r = log_open_kmsg()) >= 0) {
+ log_close_syslog();
+ log_close_console();
+ return r;
+ }
+ }
log_close_syslog();
@@ -383,7 +389,8 @@ static int log_dispatch(
if ((e = strpbrk(buffer, NEWLINE)))
*(e++) = 0;
- if (log_target == LOG_TARGET_SYSLOG_OR_KMSG ||
+ if (log_target == LOG_TARGET_AUTO ||
+ log_target == LOG_TARGET_SYSLOG_OR_KMSG ||
log_target == LOG_TARGET_SYSLOG) {
if ((k = write_to_syslog(level, file, line, func, buffer)) < 0) {
@@ -394,7 +401,8 @@ static int log_dispatch(
}
if (k <= 0 &&
- (log_target == LOG_TARGET_SYSLOG_OR_KMSG ||
+ (log_target == LOG_TARGET_AUTO ||
+ log_target == LOG_TARGET_SYSLOG_OR_KMSG ||
log_target == LOG_TARGET_KMSG)) {
if ((k = write_to_kmsg(level, file, line, func, buffer)) < 0) {
@@ -568,7 +576,8 @@ static const char *const log_target_table[] = {
[LOG_TARGET_SYSLOG] = "syslog",
[LOG_TARGET_KMSG] = "kmsg",
[LOG_TARGET_SYSLOG_OR_KMSG] = "syslog-or-kmsg",
- [LOG_TARGET_NULL] = "null"
+ [LOG_TARGET_NULL] = "null",
+ [LOG_TARGET_AUTO] = "auto"
};
DEFINE_STRING_TABLE_LOOKUP(log_target, LogTarget);