/*
 * Copyright (c) 2004, Bull SA. All rights reserved.
 * Created by:  Laurent.Vivier@bull.net
 * This file is licensed under the GPL license.  For the full content
 * of this license, see the COPYING file at the top level of this
 * source tree.
 */

/*
 * assertion:
 *
 *	The error statuses returned are identical to those returned as the
 *	result of an aio_read() or aio_write().
 *
 * method:
 *
 *	- open a file
 *	- submit a list of requests to lio_listio
 *	- check that the error and return codes are consistent
 *
 */

#define _XOPEN_SOURCE 600
#include <sys/stat.h>
#include <aio.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "posixtest.h"

#define TNAME "lio_listio/15-1.c"

#define NUM_AIOCBS	10
#define BUF_SIZE	1024

int num_received = 0;
int received_all = 0;

void sigrt1_handler(int signum, siginfo_t * info, void *context)
{
	num_received++;
}

void sigrt2_handler(int signum, siginfo_t * info, void *context)
{
	received_all = 1;
}

int main(void)
{
	char tmpfname[256];
	int fd;

	struct aiocb *aiocbs[NUM_AIOCBS];
	char *bufs;
	struct sigaction action;
	struct sigevent event;
	int errors = 0;
	int ret;
	int err;
	int i;

	if (sysconf(_SC_ASYNCHRONOUS_IO) < 200112L)
		exit(PTS_UNSUPPORTED);

	snprintf(tmpfname, sizeof(tmpfname), "/tmp/pts_lio_listio_15_1_%d",
		 getpid());
	unlink(tmpfname);

	fd = open(tmpfname, O_CREAT | O_RDWR | O_EXCL, S_IRUSR | S_IWUSR);

	if (fd == -1) {
		printf(TNAME " Error at open(): %s\n", strerror(errno));
		exit(PTS_UNRESOLVED);
	}

	unlink(tmpfname);

	bufs = malloc(NUM_AIOCBS * BUF_SIZE);

	if (bufs == NULL) {
		printf(TNAME " Error at malloc(): %s\n", strerror(errno));
		close(fd);
		exit(PTS_UNRESOLVED);
	}

	/* Queue up a bunch of aio writes */
	for (i = 0; i < NUM_AIOCBS; i++) {

		aiocbs[i] = malloc(sizeof(struct aiocb));
		memset(aiocbs[i], 0, sizeof(struct aiocb));

		aiocbs[i]->aio_fildes = fd;
		aiocbs[i]->aio_offset = 0;
		aiocbs[i]->aio_buf = &bufs[i * BUF_SIZE];
		aiocbs[i]->aio_nbytes = BUF_SIZE;

		if (i > 3)
			aiocbs[i]->aio_lio_opcode = LIO_READ;
		else
			aiocbs[i]->aio_lio_opcode = LIO_WRITE;

		/* Use SIRTMIN+1 for individual completions */
		aiocbs[i]->aio_sigevent.sigev_notify = SIGEV_SIGNAL;
		aiocbs[i]->aio_sigevent.sigev_signo = SIGRTMIN + 1;
		aiocbs[i]->aio_sigevent.sigev_value.sival_int = i;
	}

	/* Use SIGRTMIN+2 for list completion */
	event.sigev_notify = SIGEV_SIGNAL;
	event.sigev_signo = SIGRTMIN + 2;
	event.sigev_value.sival_ptr = NULL;

	/* Setup handler for individual operation completion */
	action.sa_sigaction = sigrt1_handler;
	sigemptyset(&action.sa_mask);
	action.sa_flags = SA_SIGINFO | SA_RESTART;
	sigaction(SIGRTMIN + 1, &action, NULL);

	/* Setup handler for list completion */
	action.sa_sigaction = sigrt2_handler;
	sigemptyset(&action.sa_mask);
	action.sa_flags = SA_SIGINFO | SA_RESTART;
	sigaction(SIGRTMIN + 2, &action, NULL);

	/* Submit request list */
	ret = lio_listio(LIO_NOWAIT, aiocbs, NUM_AIOCBS, &event);

	if (ret != 0) {
		printf(TNAME " Error lio_listio() returned %d (%s)\n",
		       errno, strerror(errno));

		for (i = 0; i < NUM_AIOCBS; i++)
			free(aiocbs[i]);
		free(bufs);
		close(fd);
		exit(PTS_FAIL);
	}

	while (received_all == 0)
		sleep(1);

	if (num_received != NUM_AIOCBS) {
		printf(TNAME " Error wrong number of completed requests %d\n",
		       num_received);

		for (i = 0; i < NUM_AIOCBS; i++)
			free(aiocbs[i]);
		free(bufs);
		close(fd);
		exit(PTS_FAIL);
	}

	/* Check return code and free things */
	for (i = 0; i < NUM_AIOCBS; i++) {

		err = aio_error(aiocbs[i]);
		ret = aio_return(aiocbs[i]);

		if ((err != 0) && (ret != BUF_SIZE)) {
			printf(TNAME " req %d: error = %d - return = %d\n", i,
			       err, ret);
			errors++;
		}

		free(aiocbs[i]);
	}

	free(bufs);

	close(fd);

	if (errors != 0)
		exit(PTS_FAIL);

	printf(TNAME " PASSED\n");

	return PTS_PASS;
}
