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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
View File

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