[ale] kernel info?

[Chris Fowler]

This will get it
#include <stdio.h>
#include <stdlib.h>
#include <sys/klog.h>


#define VIEWKLOG        3
#define CLEARKLOG       5

#define KLOGSIZE        16485


/* Taken from printk.c
 *      0 -- Close the log.  Currently a NOP.
 *      1 -- Open the log. Currently a NOP.
 *      2 -- Read from the log.
 *      3 -- Read all messages remaining in the ring buffer.
 *      4 -- Read and clear all messages remaining in the ring buffer
 *      5 -- Clear ring buffer.
 *      6 -- Disable printk's to console
 *      7 -- Enable printk's to console
 *      8 -- Set level of messages printed to console
 *      9 -- Return number of unread characters in the log buffer
 */

int
klog(int argc, char *argv[])
{

        char buf[KLOGSIZE];
        int n = 0;
        int i = 0;
        int lastc;


        if(argc > 1)
                if(strcmp(argv[1], "clear") == 0)
                {

                        if(getuid())
                                msgquit("only admin can clear klog");

                        if ((n = klogctl(CLEARKLOG, NULL, 0)) < 0)
                                        err_quit("klogctl");

                        printf("klog cleared\n");
                        return 0;
                }

        if ((n = klogctl(VIEWKLOG, buf, KLOGSIZE)) < 0)
                err_quit("klogctl");

        if(n == 0)
                msgquit("klog empty");

        lastc = '\n';
        for (i = 0; i < n; i++)
        {
                if (lastc == '\n' && buf[i] == '<')
                {
                        i++;
                        while (buf[i] >= '0' && buf[i] <= '9')
                                i++;
                        if (buf[i] == '>')
                                i++;
                }

                lastc = buf[i];
                putchar(lastc);
        }

        if (lastc != '\n')
                putchar('\n');

        return 0;
}


-----Original Message-----
From: Jeff Hubbs [mailto:hbbs at attbi.com]
To: ale at ale.org
Sent: Sunday, March 03, 2002 8:30 PM
To: James P. Kinney III
Cc: Stephen Turner; Atlanta Linux User Group (E-mail)
Subject: Re: [ale] kernel info?


"dmesg | less" will enhance the readability...

- Jeff


James P. Kinney III wrote:

>dmesg will show what was done by the kernel up to the start of a
>runlevel.
>
>On Sun, 2002-03-03 at 18:37, Stephen Turner wrote:
>
>>there is a lot of info and things flying by the screen
>>at boot up that i dont get to see, is there a log
>>where i can read that? or is there a way i can log
>>it??
>>im using gentoo linux
>>
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>>---
>>This message has been sent through the ALE general discussion list.
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be
>>sent to listmaster at ale dot org.
>>




---
This message has been sent through the ALE general discussion list.
See http://www.ale.org/mailing-lists.shtml for more info. Problems should be
sent to listmaster at ale dot org.




---
This message has been sent through the ALE general discussion list.
See http://www.ale.org/mailing-lists.shtml for more info. Problems should be 
sent to listmaster at ale dot org.