94 lines
1.9 KiB
C
94 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
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* AUTHOR: Barrie Kletscher
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* CO-PILOT: Dave Baumgartner
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*/
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/signal.h>
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#include <errno.h>
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#include <stdlib.h>
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#include "tst_test.h"
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/* Temporary file names */
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#define FNAME1 "stat02.1"
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#define FNAME2 "stat02.2"
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/* Number of times each buffer is written */
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#define NUM_WRITES (10)
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#define BUFSIZE (4096)
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char *buffer;
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static struct test_case {
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const char *filename;
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size_t bytes_to_write;
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size_t decrement;
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} tcases[] = {
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/* Write and verify BUFSIZE byte chunks */
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{ FNAME1, BUFSIZE, BUFSIZE },
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/* Write and verify decreasing chunk sizes */
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{ FNAME2, BUFSIZE, 1000 }
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};
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void verify(const char *fname, size_t bytes, size_t decrement)
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{
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struct stat s;
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int fd, i;
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size_t bytes_written = 0;
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fd = SAFE_OPEN(fname, O_CREAT | O_TRUNC | O_RDWR, 0777);
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while (bytes > 0) {
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for (i = 0; i < NUM_WRITES; i++) {
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SAFE_WRITE(1, fd, buffer, bytes);
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bytes_written += bytes;
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}
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bytes -= bytes > decrement ? decrement : bytes;
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}
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SAFE_CLOSE(fd);
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SAFE_STAT(fname, &s);
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SAFE_UNLINK(fname);
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/*
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* Now check to see if the number of bytes written was
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* the same as the number of bytes in the file.
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*/
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if (s.st_size != (off_t) bytes_written) {
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tst_res(TFAIL, "file size (%zu) not as expected (%zu) bytes",
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s.st_size, bytes_written);
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return;
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}
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tst_res(TPASS, "File size reported as expected");
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}
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void verify_stat_size(unsigned int nr)
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{
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struct test_case *tcase = &tcases[nr];
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verify(tcase->filename, tcase->bytes_to_write, tcase->decrement);
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}
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void setup(void)
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{
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buffer = SAFE_MALLOC(BUFSIZE);
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}
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void cleanup(void)
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{
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free(buffer);
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}
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static struct tst_test test = {
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.tcnt = ARRAY_SIZE(tcases),
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.needs_tmpdir = 1,
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.test = verify_stat_size,
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.setup = setup,
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.cleanup = cleanup,
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};
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