114 lines
2.5 KiB
C
114 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) Wayne Boyer, International Business Machines Corp., 2001
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* Copyright (c) 2019 SUSE LLC, Jozef Pupava <jpupava@suse.com>
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*/
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/*
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* Test Description:
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* Test fsync() return value on test file
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* fsync() has to finish within TIME_LIMIT.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/statvfs.h>
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#include <fcntl.h>
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#include <sys/resource.h>
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#include <time.h>
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#include "tst_test.h"
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#define BLOCKSIZE 8192
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#define MAXBLKS 65536
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#define TIME_LIMIT 120
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#define BUF_SIZE 2048
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char tempfile[40] = "";
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char pbuf[BUF_SIZE];
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int fd;
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off_t max_blks = MAXBLKS;
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struct statvfs stat_buf;
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static void setup(void) {
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/* free blocks avail to non-superuser */
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unsigned long f_bavail;
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fd = SAFE_OPEN("tempfile", O_RDWR | O_CREAT | O_TRUNC, 0777);
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if (fstatvfs(fd, &stat_buf) != 0) {
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tst_brk(TBROK, "fstatvfs failed");
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}
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f_bavail = (stat_buf.f_bavail * stat_buf.f_bsize) / BLOCKSIZE;
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if (f_bavail && (f_bavail < MAXBLKS)) {
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max_blks = f_bavail;
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}
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#ifdef LARGEFILE
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SAFE_FCNTL(fd, F_SETFL, O_LARGEFILE);
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SAFE_WRITE(1, fd, pbuf, BUF_SIZE);
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#endif
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}
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static void run(void) {
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off_t offset;
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int i;
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int max_block = 0;
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int data_blocks = 0;
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time_t time_start, time_end;
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double time_delta;
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long int random_number;
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random_number = rand();
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max_block = random_number % max_blks + 1;
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data_blocks = random_number % max_block;
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for (i = 1; i <= data_blocks; i++) {
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offset = i * ((BLOCKSIZE * max_block) / data_blocks);
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offset -= BUF_SIZE;
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SAFE_LSEEK(fd, offset, SEEK_SET);
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SAFE_WRITE(1, fd, pbuf, BUF_SIZE);
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}
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time_start = time(0);
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TEST(fsync(fd));
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time_end = time(0);
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if (time_end == -1) {
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tst_res(TFAIL | TTERRNO, "getting end time failed");
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} else if (TST_RET == -1) {
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tst_res(TFAIL | TTERRNO, "fsync failed");
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} else if (TST_RET != 0) {
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tst_res(TFAIL | TTERRNO,
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"fsync failed with unexpected return value");
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} else if (time_end < time_start) {
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tst_res(TFAIL,
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"timer broken end %ld < start %ld",
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time_end, time_start);
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} else if ((time_delta =
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difftime(time_end, time_start)) > TIME_LIMIT) {
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tst_res(TFAIL,
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"fsync took too long: %lf seconds; "
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"max_block: %d; data_blocks: %d",
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time_delta, max_block, data_blocks);
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} else {
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tst_res(TPASS,
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"fsync succeeded in an acceptable amount of time");
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}
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SAFE_FTRUNCATE(fd, 0);
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}
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static void cleanup(void) {
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SAFE_CLOSE(fd);
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}
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static struct tst_test test = {
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.test_all = run,
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.setup = setup,
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.cleanup = cleanup,
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.needs_tmpdir = 1
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};
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