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/*
* stp.c - stp 'daemon'
*
* 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.
*
* Copyright (C) IBM Corporation, 2005
* Copyright (C) Red Hat Inc, 2005
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "librelay.h"
extern char *optarg;
extern int optopt;
extern int optind;
int print_only = 0;
int quiet = 0;
int merge = 1;
unsigned int opt_subbuf_size = 0;
unsigned int opt_n_subbufs = 0;
char *modname = NULL;
/* relayfs base file name */
static char stpd_filebase[1024];
static void usage(char *prog)
{
fprintf(stderr, "\n%s [-m] [-p] [-q] [-b bufsize] [-n num_subbufs] kmod-name\n", prog);
fprintf(stderr, "-m Don't merge per-cpu files.\n");
fprintf(stderr, "-p Print only. Don't log to files.\n");
fprintf(stderr, "-q Quiet. Don't display trace to stdout.\n");
fprintf(stderr, "-b subbuf_size (override the value in the module)\n");
fprintf(stderr, "-n subbufs (override the value in the module)\n");
exit(1);
}
int main(int argc, char **argv)
{
int c;
while ((c = getopt(argc, argv, "mpqb:n:")) != EOF)
{
switch (c) {
case 'm':
merge = 0;
break;
case 'p':
print_only = 1;
break;
case 'q':
quiet = 1;
break;
case 'b':
opt_subbuf_size = (unsigned)atoi(optarg);
if (!opt_subbuf_size)
usage(argv[0]);
break;
case 'n':
opt_n_subbufs = (unsigned)atoi(optarg);
if (!opt_n_subbufs)
usage(argv[0]);
break;
default:
usage(argv[0]);
}
}
if ((opt_n_subbufs && !opt_subbuf_size) || (opt_subbuf_size && !opt_n_subbufs)) {
fprintf (stderr, "You must specify both the number of subbufs and their size.\n");
usage(argv[0]);
}
if (optind < argc)
modname = argv[optind++];
if (!modname) {
fprintf (stderr, "Cannot invoke daemon without probe module\n");
usage(argv[0]);
}
if (print_only && quiet) {
fprintf (stderr, "Cannot do \"-p\" and \"-q\" both.\n");
usage(argv[0]);
}
sprintf(stpd_filebase, "/mnt/relay/%d/cpu", getpid());
if (init_stp(stpd_filebase, !quiet)) {
fprintf(stderr, "Couldn't initialize stpd. Exiting.\n");
exit(1);
}
if (stp_main_loop()) {
printf("Couldn't enter main loop. Exiting.\n");
exit(1);
}
return 0;
}
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