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- shrink dmesg a bit.
http://busybox.net/lists/busybox/2006-March/019477.html
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parent
ca087713f2
commit
b256bd334f
@ -20,7 +20,6 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <getopt.h>
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#include <errno.h>
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#include <sys/klog.h>
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@ -28,71 +27,53 @@
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int dmesg_main(int argc, char **argv)
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{
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char *buf
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#ifdef CONFIG_FEATURE_CLEAN_UP
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= NULL
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#endif
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;
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char *buf, *tmp;
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int bufsize = 8196;
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int i, n;
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int level = 0;
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int lastc;
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int cmd = 3;
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int i, n = 0;
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int c = 3;
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while ((i = getopt(argc, argv, "cn:s:")) > 0) {
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switch (i) {
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case 'c':
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cmd = 4;
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break;
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case 'n':
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cmd = 8;
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level = bb_xgetlarg(optarg, 10, 0, 10);
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break;
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case 's':
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i = bb_getopt_ulflags(argc, argv, "cn:s:", &buf, &tmp);
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if (i & 1)
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c = 4;
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if (i & 2) {
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c = 8;
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n = bb_xgetlarg(buf, 10, 0, 10);
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}
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if (i & 4)
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/* I think a 512k max kernel ring buffer is big enough for
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* anybody, as the default is 16k... Could be wrong though.
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* If so I'm sure I'll hear about it by the enraged masses*/
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bufsize = bb_xgetlarg(optarg, 10, 4096, 512*1024);
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break;
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default:
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bb_show_usage();
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}
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}
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bufsize = bb_xgetlarg(tmp, 10, 4096, 512*1024);
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if (optind < argc) {
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bb_show_usage();
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}
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if (cmd == 8) {
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if (klogctl(cmd, NULL, level) < 0)
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if (c == 8) {
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if (klogctl(c, NULL, n) < 0)
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goto die_the_death;
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goto all_done;
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}
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buf = xmalloc(bufsize);
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if ((n = klogctl(cmd, buf, bufsize)) < 0)
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if ((n = klogctl(c, buf, bufsize)) < 0)
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goto die_the_death;
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lastc = '\n';
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c = '\n';
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for (i = 0; i < n; i++) {
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if (lastc == '\n' && buf[i] == '<') {
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if (c == '\n' && buf[i] == '<') {
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i++;
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while (buf[i] >= '0' && buf[i] <= '9')
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i++;
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if (buf[i] == '>')
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i++;
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}
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lastc = buf[i];
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putchar(lastc);
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c = buf[i];
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putchar(c);
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}
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if (lastc != '\n')
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if (c != '\n')
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putchar('\n');
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all_done:
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#ifdef CONFIG_FEATURE_CLEAN_UP
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if (buf) {
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if (ENABLE_FEATURE_CLEAN_UP) {
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free(buf);
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}
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#endif
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return EXIT_SUCCESS;
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die_the_death:
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bb_perror_nomsg_and_die();
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