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-rw-r--r--syslogd/klogd.c184
1 files changed, 0 insertions, 184 deletions
diff --git a/syslogd/klogd.c b/syslogd/klogd.c
deleted file mode 100644
index d2301ee..0000000
--- a/syslogd/klogd.c
+++ /dev/null
@@ -1,184 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-/*
- * Copyright (C) 2018 - David Oberhollenzer
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <https://www.gnu.org/licenses/>.
- */
-#include <sys/klog.h>
-#include <syslog.h>
-#include <signal.h>
-#include <string.h>
-#include <stdlib.h>
-#include <getopt.h>
-#include <stdio.h>
-#include <errno.h>
-
-#include "config.h"
-#include "util.h"
-
-enum {
- KLOG_CLOSE = 0,
- KLOG_OPEN = 1,
- KLOG_READ = 2,
- KLOG_CONSOLE_OFF = 6,
- KLOG_CONSOLE_ON = 7,
- KLOG_CONSOLE_LEVEL = 8,
-};
-
-static char log_buffer[4096];
-static sig_atomic_t running = 1;
-static int level = 0;
-
-static const struct option options[] = {
- { "help", no_argument, NULL, 'h' },
- { "version", no_argument, NULL, 'V' },
- { "level", required_argument, NULL, 'l' },
- { NULL, 0, NULL, 0 },
-};
-
-static const char *shortopt = "hVl:";
-
-static const char *helptext =
-"Usage: klogd [OPTION]... \n\n"
-"Collect printk() messages from the kernel and forward them to syslogd.\n"
-"\n"
-"The following OPTIONSs can be used:\n"
-" -l, --level <level> Minimum log level that should be printed to console.\n"
-" If not set, logging to console is turned off.\n"
-" -h, --help Print this help text and exit\n"
-" -V, --version Print version information and exit\n\n";
-
-static void process_options(int argc, char **argv)
-{
- int c;
-
- for (;;) {
- c = getopt_long(argc, argv, shortopt, options, NULL);
- if (c == -1)
- break;
-
- switch (c) {
- case 'l':
- level = strtoul(optarg, NULL, 10);
- break;
- case 'h':
- fputs(helptext, stdout);
- exit(EXIT_SUCCESS);
- case 'V':
- print_version("klogd");
- default:
- fputs("Try `klogd --help' for more information\n",
- stderr);
- exit(EXIT_FAILURE);
- }
- }
-}
-
-static void sighandler(int signo)
-{
- if (signo == SIGTERM || signo == SIGINT)
- running = 0;
-}
-
-static void sigsetup(void)
-{
- struct sigaction act;
- sigset_t mask;
-
- memset(&act, 0, sizeof(act));
- act.sa_handler = sighandler;
- sigaction(SIGTERM, &act, NULL);
- sigaction(SIGINT, &act, NULL);
-
- sigfillset(&mask);
- sigdelset(&mask, SIGTERM);
- sigdelset(&mask, SIGINT);
- sigprocmask(SIG_SETMASK, &mask, NULL);
-}
-
-static void log_open(void)
-{
- klogctl(KLOG_OPEN, NULL, 0);
-
- if (level) {
- klogctl(KLOG_CONSOLE_LEVEL, NULL, level);
- } else {
- klogctl(KLOG_CONSOLE_OFF, NULL, 0);
- }
-
- openlog("kernel", 0, LOG_KERN);
-}
-
-static void log_close(void)
-{
- klogctl(KLOG_CONSOLE_ON, NULL, 0);
- klogctl(KLOG_CLOSE, NULL, 0);
- syslog(LOG_NOTICE, "-- klogd terminating --");
-}
-
-int main(int argc, char **argv)
-{
- int diff, count = 0, priority, ret = EXIT_SUCCESS;
- char *ptr, *end;
-
- process_options(argc, argv);
- sigsetup();
- log_open();
-
- /* TODO: seccomp lockdown? */
-
- while (running) {
- diff = klogctl(KLOG_READ, log_buffer + count,
- sizeof(log_buffer) - 1 - count);
-
- if (diff < 0) {
- if (errno == EINTR)
- continue;
- syslog(LOG_CRIT, "klogctl read: %s", strerror(errno));
- ret = EXIT_FAILURE;
- break;
- }
-
- count += diff;
- log_buffer[count] = '\0';
- ptr = log_buffer;
-
- for (;;) {
- end = strchr(ptr, '\n');
- if (end == NULL) {
- count = strlen(ptr);
- memmove(log_buffer, ptr, count);
- break;
- }
-
- *(end++) = '\0';
- priority = LOG_INFO;
-
- if (*ptr == '<') {
- ++ptr;
- if (*ptr)
- priority = strtoul(ptr, &ptr, 10);
- if (*ptr == '>')
- ++ptr;
- }
-
- if (*ptr)
- syslog(priority, "%s", ptr);
- ptr = end;
- }
- }
-
- log_close();
- return ret;
-}