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authorDenis Vlasenko <vda.linux@googlemail.com>2007-01-04 03:07:57 +0000
committerDenis Vlasenko <vda.linux@googlemail.com>2007-01-04 03:07:57 +0000
commite428e9d43b998a251ef7ad9d131459872ce4b4ff (patch)
tree6aa1ef3ed663aebd19cdeade0b97542813d77427
parentb8429fb1f45a35b36adeb44f90cd6842c2df7791 (diff)
downloadbusybox-e428e9d43b998a251ef7ad9d131459872ce4b4ff.tar.gz
klogd: small optimizations
(btw, I looked into syslogd... that's frightening!)
-rw-r--r--sysklogd/klogd.c49
1 files changed, 25 insertions, 24 deletions
diff --git a/sysklogd/klogd.c b/sysklogd/klogd.c
index f735d9fc1..97b419104 100644
--- a/sysklogd/klogd.c
+++ b/sysklogd/klogd.c
@@ -25,8 +25,7 @@ static void klogd_signal(int sig ATTRIBUTE_UNUSED)
{
klogctl(7, NULL, 0);
klogctl(0, 0, 0);
- /* logMessage(0, "Kernel log daemon exiting."); */
- syslog(LOG_NOTICE, "Kernel log daemon exiting.");
+ syslog(LOG_NOTICE, "Kernel log daemon exiting");
exit(EXIT_SUCCESS);
}
@@ -38,29 +37,25 @@ static void klogd_signal(int sig ATTRIBUTE_UNUSED)
int klogd_main(int argc, char **argv)
{
RESERVE_CONFIG_BUFFER(log_buffer, KLOGD_LOGBUF_SIZE);
- int console_log_level = -1;
+ int console_log_level = console_log_level; /* for gcc */
int priority = LOG_INFO;
int i, n, lastc;
char *start;
- {
- unsigned opt;
+ /* do normal option parsing */
+ n = getopt32(argc, argv, "c:n", &start);
- /* do normal option parsing */
- opt = getopt32(argc, argv, "c:n", &start);
-
- if (opt & OPT_LEVEL) {
- /* Valid levels are between 1 and 8 */
- console_log_level = xatoul_range(start, 1, 8);
- }
+ if (n & OPT_LEVEL) {
+ /* Valid levels are between 1 and 8 */
+ console_log_level = xatoul_range(start, 1, 8);
+ }
- if (!(opt & OPT_FOREGROUND)) {
+ if (!(n & OPT_FOREGROUND)) {
#ifdef BB_NOMMU
- vfork_daemon_rexec(0, 1, argc, argv, "-n");
+ vfork_daemon_rexec(0, 1, argc, argv, "-n");
#else
- xdaemon(0, 1);
+ xdaemon(0, 1);
#endif
- }
}
openlog("kernel", 0, LOG_KERN);
@@ -75,7 +70,7 @@ int klogd_main(int argc, char **argv)
klogctl(1, NULL, 0);
/* Set level of kernel console messaging.. */
- if (console_log_level != -1)
+ if (n & OPT_LEVEL)
klogctl(8, NULL, console_log_level);
syslog(LOG_NOTICE, "klogd started: %s", BB_BANNER);
@@ -83,13 +78,14 @@ int klogd_main(int argc, char **argv)
while (1) {
/* Use kernel syscalls */
memset(log_buffer, '\0', KLOGD_LOGBUF_SIZE);
- n = klogctl(2, log_buffer, KLOGD_LOGBUF_SIZE);
+ /* It will be null-terminted */
+ n = klogctl(2, log_buffer, KLOGD_LOGBUF_SIZE - 1);
if (n < 0) {
if (errno == EINTR)
continue;
- syslog(LOG_ERR, "klogd: Error from sys_sycall: %d - %m.\n",
+ syslog(LOG_ERR, "klogd: error from klogctl(2): %d - %m",
errno);
- exit(EXIT_FAILURE);
+ break;
}
/* klogctl buffer parsing modelled after code in dmesg.c */
@@ -97,10 +93,15 @@ int klogd_main(int argc, char **argv)
lastc = '\0';
for (i = 0; i < n; i++) {
if (lastc == '\0' && log_buffer[i] == '<') {
- priority = 0;
i++;
- while (log_buffer[i] >= '0' && log_buffer[i] <= '9') {
- priority = priority * 10 + (log_buffer[i] - '0');
+ // kernel never ganerates multi-digit prios
+ //priority = 0;
+ //while (log_buffer[i] >= '0' && log_buffer[i] <= '9') {
+ // priority = priority * 10 + (log_buffer[i] - '0');
+ // i++;
+ //}
+ if (isdigit(log_buffer[i])) {
+ priority = (log_buffer[i] - '0');
i++;
}
if (log_buffer[i] == '>')
@@ -119,5 +120,5 @@ int klogd_main(int argc, char **argv)
if (ENABLE_FEATURE_CLEAN_UP)
RELEASE_CONFIG_BUFFER(log_buffer);
- return EXIT_SUCCESS;
+ return EXIT_FAILURE;
}