Re: [Bug-sysutils] RFC dmesgd

[Alfred M. Szmidt]

   Here is the dmesgd that I was working on.  If any of you have time
   I would appreciate some comments/suggestions.

Since everyone is so quite, I'll shoot.

   One of the problems I am not sure what to do with is if dmesgd is
   restarted without rebooting.  Obviosly klog is empty at that point
   so what should I do, somehow keep the same log file?

What about storing the content of /dev/klog and then reusing that if
klog is killed?  And on boot, you could clear that temporary file.

   /* dmesgd.c -- daemon to capture the kernel ring buffer
    *
    * Copyright (C) 2004 Barry deFreese
    * Copyright (C) 2004 Free Software Foundation, Inc.

Don't you have papers for sysutils?  If you do, then you should just
list the FSF.  You can add a line like "Written by Barry deFreese" in
the header if you want.

   #define KBUFSIZE 16384

   int main(void)
   {

           char kbuf[KBUFSIZE];

           if (getuid() == 0) {

It is better if you just check if you can open/read /dev/klog instead

           /* Make / the current directory */
           if ((chdir("/")) < 0) {
                   perror("chdir");
                   exit(EXIT_FAILURE);
           }

Why?

           /* Reset the file mode */
           umask (0);

Why?

           unlink(_PATH_DMLOG);

Is this really wise? What if I want to read the content of _PATH_DMLOG
after dmesgd has been shutdown cleanly?  If you need to have a clean
_PATH_DMLOG when starting, do it at the begining of main().