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- /* See LICENSE file for copyright and license details. */
- #include <sys/klog.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <unistd.h>
- #include "util.h"
- enum {
- SYSLOG_ACTION_READ_ALL = 3,
- SYSLOG_ACTION_CLEAR = 5,
- SYSLOG_ACTION_CONSOLE_LEVEL = 8,
- SYSLOG_ACTION_SIZE_BUFFER = 10
- };
- static void
- dmesg_show(const void *buf, size_t n)
- {
- const char *p = buf;
- ssize_t r;
- r = write(1, p, n);
- if (r < 0)
- eprintf("write:");
- if (r > 0 && p[r - 1] != '\n')
- putchar('\n');
- }
- static void
- usage(void)
- {
- eprintf("usage: %s [-Ccr] [-n level]\n", argv0);
- }
- int
- main(int argc, char *argv[])
- {
- int n;
- char *buf;
- int cflag = 0;
- long level;
- ARGBEGIN {
- case 'C':
- if (klogctl(SYSLOG_ACTION_CLEAR, NULL, 0) < 0)
- eprintf("klogctl:");
- return 0;
- case 'c':
- cflag = 1;
- break;
- case 'r':
- break;
- case 'n':
- level = estrtol(EARGF(usage()), 10);
- if (klogctl(SYSLOG_ACTION_CONSOLE_LEVEL, NULL, level) < 0)
- eprintf("klogctl:");
- return 0;
- default:
- usage();
- } ARGEND;
- n = klogctl(SYSLOG_ACTION_SIZE_BUFFER, NULL, 0);
- if (n < 0)
- eprintf("klogctl:");
- buf = emalloc(n);
- n = klogctl(SYSLOG_ACTION_READ_ALL, buf, n);
- if (n < 0)
- eprintf("klogctl:");
- dmesg_show(buf, n);
- if (cflag && klogctl(SYSLOG_ACTION_CLEAR, NULL, 0) < 0)
- eprintf("klogctl:");
- free(buf);
- return 0;
- }
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