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/*
* Copyright (c) 2010 David Teigland
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License V2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it would 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.
*/
#include <sys/types.h>
#include <sys/uio.h>
#include <sys/poll.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stddef.h>
#include <signal.h>
#include <errno.h>
#include <unistd.h>
#include "libdlm.h"
static int ast_called = 0;
static int quit;
static int do_release(void)
{
static dlm_lshandle_t *dh;
dh = dlm_create_lockspace("default", 0600);
if (!dh) {
printf("dlm_lock create lockspace error\n");
return -1;
}
dlm_release_lockspace("default", dh, 1);
return 0;
}
void sigterm_handler(int sig)
{
quit = 1;
}
static void bast_fn(void *arg)
{
printf("dlm_lock bast\n");
}
static void ast_fn(void *arg)
{
printf("dlm_lock ast\n");
ast_called = 1;
}
static int poll_for_ast(void)
{
struct pollfd pfd;
pfd.fd = dlm_get_fd();
pfd.events = POLLIN;
while (!ast_called) {
if (poll(&pfd, 1, 0) < 0) {
perror("poll");
return -1;
}
dlm_dispatch(pfd.fd);
}
ast_called = 0;
return 0;
}
int do_lock(char *name, struct dlm_lksb *lksb)
{
int len = strlen(name);
int rv;
printf("dlm_lock request NL ...\n");
fflush(stdout);
rv = dlm_lock(LKM_NLMODE, lksb, 0, name, len, 0,
ast_fn, lksb, bast_fn, NULL);
if (rv < 0) {
printf("dlm_lock request NL done error %d %d", rv, errno);
return -1;
}
poll_for_ast();
printf("dlm_lock request NL done status %d lkid %x\n",
lksb->sb_status, lksb->sb_lkid);
printf("dlm_lock convert EX ...\n");
fflush(stdout);
rv = dlm_lock(LKM_EXMODE, lksb, LKF_CONVERT, name, len, 0,
ast_fn, lksb, bast_fn, NULL);
if (rv < 0) {
printf("dlm_lock convert EX done error %d %d", rv, errno);
return -1;
}
poll_for_ast();
printf("dlm_lock convert EX done status %d\n", lksb->sb_status);
fflush(stdout);
return 0;
}
int main(int argc, char *argv[])
{
struct dlm_lksb lksb;
char name[32];
int i, count;
signal(SIGTERM, sigterm_handler);
printf("dlm_lock pid %d\n", getpid());
if (argc > 1 && !strcmp(argv[1], "release")) {
do_release();
return 0;
}
if (argc < 2)
count = 1;
else
count = atoi(argv[1]);
for (i = 0; i < count; i++) {
memset(name, 0, sizeof(name));
sprintf(name, "dlm_lock%d", i);
printf("dlm_lock resource %s\n", name);
/* too lazy to properly use separate lksb for each */
memset(&lksb, 0, sizeof(lksb));
do_lock(name, &lksb);
}
while (!quit)
pause();
return 0;
}
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