* Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
*/
-#include "busybox.h"
+#include "libbb.h"
#include <sys/syslog.h>
#include <sys/klog.h>
{
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);
}
#define OPT_LEVEL 1
#define OPT_FOREGROUND 2
-#define KLOGD_LOGBUF_SIZE 4096
+#define KLOGD_LOGBUF_SIZE BUFSIZ
+#define log_buffer bb_common_bufsiz1
+int klogd_main(int argc, char **argv);
int klogd_main(int argc, char **argv)
{
- RESERVE_CONFIG_BUFFER(log_buffer, KLOGD_LOGBUF_SIZE);
- int console_log_level = -1;
- int priority = LOG_INFO;
- int i, n, lastc;
+ int i = i; /* silence gcc */
char *start;
+ /* do normal option parsing */
+ getopt32(argv, "c:n", &start);
- {
- unsigned long opt;
-
- /* do normal option parsing */
- opt = bb_getopt_ulflags(argc, argv, "c:n", &start);
-
- if (opt & OPT_LEVEL) {
- /* Valid levels are between 1 and 8 */
- console_log_level = bb_xgetlarg(start, 10, 1, 8);
- }
+ if (option_mask32 & OPT_LEVEL) {
+ /* Valid levels are between 1 and 8 */
+ i = xatoul_range(start, 1, 8);
+ }
- if (!(opt & OPT_FOREGROUND)) {
-#ifdef BB_NOMMU
- vfork_daemon_rexec(0, 1, argc, argv, "-n");
-#else
- xdaemon(0, 1);
-#endif
- }
+ if (!(option_mask32 & OPT_FOREGROUND)) {
+ bb_daemonize_or_rexec(DAEMON_CHDIR_ROOT, argv);
}
openlog("kernel", 0, LOG_KERN);
/* "Open the log. Currently a NOP." */
klogctl(1, NULL, 0);
- /* Set level of kernel console messaging.. */
- if (console_log_level != -1)
- klogctl(8, NULL, console_log_level);
+ /* Set level of kernel console messaging. */
+ if (option_mask32 & OPT_LEVEL)
+ klogctl(8, NULL, i);
- syslog(LOG_NOTICE, "klogd started: %s", BB_BANNER);
+ syslog(LOG_NOTICE, "klogd started: %s", bb_banner);
+ /* Note: this code does not detect incomplete messages
+ * (messages not ending with '\n' or just when kernel
+ * generates too many messages for us to keep up)
+ * and will split them in two separate lines */
while (1) {
- /* Use kernel syscalls */
- memset(log_buffer, '\0', KLOGD_LOGBUF_SIZE);
- n = klogctl(2, log_buffer, KLOGD_LOGBUF_SIZE);
+ int n;
+ int priority;
+
+ 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",
- errno);
- exit(EXIT_FAILURE);
+ syslog(LOG_ERR, "klogd: error from klogctl(2): %d - %m",
+ errno);
+ break;
}
-
- /* klogctl buffer parsing modelled after code in dmesg.c */
- start = &log_buffer[0];
- lastc = '\0';
- for (i = 0; i < n; i++) {
- if (lastc == '\0' && log_buffer[i] == '<') {
- priority = 0;
+ log_buffer[n] = '\n';
+ i = 0;
+ while (i < n) {
+ priority = LOG_INFO;
+ start = &log_buffer[i];
+ if (log_buffer[i] == '<') {
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] == '>')
i++;
start = &log_buffer[i];
}
- if (log_buffer[i] == '\n') {
- log_buffer[i] = '\0'; /* zero terminate this message */
- syslog(priority, "%s", start);
- start = &log_buffer[i + 1];
- priority = LOG_INFO;
- }
- lastc = log_buffer[i];
+ while (log_buffer[i] != '\n')
+ i++;
+ log_buffer[i] = '\0';
+ syslog(priority, "%s", start);
+ i++;
}
}
- if (ENABLE_FEATURE_CLEAN_UP)
- RELEASE_CONFIG_BUFFER(log_buffer);
- return EXIT_SUCCESS;
+ return EXIT_FAILURE;
}