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- shrink dmesg a bit.

Browse Source 
http://busybox.net/lists/busybox/2006-March/019477.html
This commit is contained in:
Bernhard Reutner-Fischer 2006-03-29 17:26:14 +00:00
parent ca087713f2
commit b256bd334f
1 changed files with 22 additions and 41 deletions
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63
util-linux/dmesg.c
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@ -20,7 +20,6 @@
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <getopt.h>
#include <errno.h> #include <errno.h>
#include <sys/klog.h> #include <sys/klog.h>
@ -28,71 +27,53 @@
int dmesg_main(int argc, char **argv) int dmesg_main(int argc, char **argv)
{ {
char *buf char *buf, *tmp;
#ifdef CONFIG_FEATURE_CLEAN_UP
= NULL
#endif
;
int bufsize = 8196; int bufsize = 8196;
int i, n; int i, n = 0;
int level = 0; int c = 3;
int lastc;
int cmd = 3;
while ((i = getopt(argc, argv, "cn:s:")) > 0) { i = bb_getopt_ulflags(argc, argv, "cn:s:", &buf, &tmp);
switch (i) { if (i & 1)
case 'c': c = 4;
cmd = 4; if (i & 2) {
break; c = 8;
case 'n': n = bb_xgetlarg(buf, 10, 0, 10);
cmd = 8; }
level = bb_xgetlarg(optarg, 10, 0, 10); if (i & 4)
break;
case 's':
/* I think a 512k max kernel ring buffer is big enough for /* I think a 512k max kernel ring buffer is big enough for
* anybody, as the default is 16k... Could be wrong though. * anybody, as the default is 16k... Could be wrong though.
* If so I'm sure I'll hear about it by the enraged masses*/ * If so I'm sure I'll hear about it by the enraged masses*/
bufsize = bb_xgetlarg(optarg, 10, 4096, 512*1024); bufsize = bb_xgetlarg(tmp, 10, 4096, 512*1024);
break;
default:
bb_show_usage();
}
}
if (optind < argc) { if (c == 8) {
bb_show_usage(); if (klogctl(c, NULL, n) < 0)
}
if (cmd == 8) {
if (klogctl(cmd, NULL, level) < 0)
goto die_the_death; goto die_the_death;
goto all_done; goto all_done;
} }
buf = xmalloc(bufsize); buf = xmalloc(bufsize);
if ((n = klogctl(cmd, buf, bufsize)) < 0) if ((n = klogctl(c, buf, bufsize)) < 0)
goto die_the_death; goto die_the_death;
lastc = '\n'; c = '\n';
for (i = 0; i < n; i++) { for (i = 0; i < n; i++) {
if (lastc == '\n' && buf[i] == '<') { if (c == '\n' && buf[i] == '<') {
i++; i++;
while (buf[i] >= '0' && buf[i] <= '9') while (buf[i] >= '0' && buf[i] <= '9')
i++; i++;
if (buf[i] == '>') if (buf[i] == '>')
i++; i++;
} }
lastc = buf[i]; c = buf[i];
putchar(lastc); putchar(c);
} }
if (lastc != '\n') if (c != '\n')
putchar('\n'); putchar('\n');
all_done: all_done:
#ifdef CONFIG_FEATURE_CLEAN_UP if (ENABLE_FEATURE_CLEAN_UP) {
if (buf) {
free(buf); free(buf);
} }
#endif
return EXIT_SUCCESS; return EXIT_SUCCESS;
die_the_death: die_the_death:
bb_perror_nomsg_and_die(); bb_perror_nomsg_and_die();