linux_module_learn/examples/misc-progs/setlevel.c

48 lines
1.6 KiB
C

/*
* setlevel.c -- choose a console_loglevel for the kernel
*
* Copyright (C) 1998,2000,2001 Alessandro Rubini
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
/* #include <unistd.h> */ /* conflicting on the alpha */
#define __LIBRARY__ /* _syscall3 and friends are only available through this */
#include <linux/unistd.h>
/* define the system call, to override the library function */
_syscall3(int, syslog, int, type, char *, bufp, int, len);
int main(int argc, char **argv)
{
int level;
if (argc==2) {
level = atoi(argv[1]); /* the chosen console */
} else {
fprintf(stderr, "%s: need a single arg\n",argv[0]); exit(1);
}
if (syslog(8,NULL,level) < 0) {
fprintf(stderr,"%s: syslog(setlevel): %s\n",
argv[0],strerror(errno));
exit(1);
}
exit(0);
}