99 lines
2.1 KiB
C
99 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Copyright (c) International Business Machines Corp., 2001
|
|
* 06/2017 modified by Xiao Yang <yangx.jy@cn.fujitsu.com>
|
|
*/
|
|
|
|
/*
|
|
* Description:
|
|
* lseek() succeeds to set the specified offset according to whence
|
|
* and write valid data from this location.
|
|
*/
|
|
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
#include "tst_test.h"
|
|
|
|
#define TFILE1 "tfile1"
|
|
#define TFILE2 "tfile2"
|
|
#define WR_STR1 "abcdefg"
|
|
#define WR_STR2 "ijk"
|
|
|
|
static int fd1, fd2;
|
|
static struct tcase {
|
|
int *fd;
|
|
char *fname;
|
|
off_t off;
|
|
off_t exp_off;
|
|
int exp_size;
|
|
char *exp_data;
|
|
} tcases[] = {
|
|
{&fd1, TFILE1, 7, 7, 10, "abcdefgijk"},
|
|
{&fd2, TFILE2, 2, 2, 7, "abijkfg"},
|
|
};
|
|
|
|
static void verify_lseek(unsigned int n)
|
|
{
|
|
char read_buf[64];
|
|
struct tcase *tc = &tcases[n];
|
|
|
|
memset(read_buf, 0, sizeof(read_buf));
|
|
|
|
TEST(lseek(*tc->fd, tc->off, SEEK_SET));
|
|
if (TST_RET == (off_t) -1) {
|
|
tst_res(TFAIL | TTERRNO, "lseek(%s, %ld, SEEK_SET) failed",
|
|
tc->fname, tc->off);
|
|
return;
|
|
}
|
|
|
|
if (TST_RET != tc->exp_off) {
|
|
tst_res(TFAIL, "lseek(%s, %ld, SEEK_SET) returned %ld, expected %ld",
|
|
tc->fname, tc->off, TST_RET, tc->exp_off);
|
|
return;
|
|
}
|
|
|
|
SAFE_WRITE(1, *tc->fd, WR_STR2, sizeof(WR_STR2) - 1);
|
|
|
|
SAFE_CLOSE(*tc->fd);
|
|
|
|
*tc->fd = SAFE_OPEN(tc->fname, O_RDWR);
|
|
|
|
SAFE_READ(1, *tc->fd, read_buf, tc->exp_size);
|
|
|
|
if (strcmp(read_buf, tc->exp_data)) {
|
|
tst_res(TFAIL, "lseek(%s, %ld, SEEK_SET) wrote incorrect data %s",
|
|
tc->fname, tc->off, read_buf);
|
|
} else {
|
|
tst_res(TPASS, "lseek(%s, %ld, SEEK_SET) wrote correct data %s",
|
|
tc->fname, tc->off, read_buf);
|
|
}
|
|
}
|
|
|
|
static void setup(void)
|
|
{
|
|
fd1 = SAFE_OPEN(TFILE1, O_RDWR | O_CREAT, 0644);
|
|
fd2 = SAFE_OPEN(TFILE2, O_RDWR | O_CREAT, 0644);
|
|
|
|
SAFE_WRITE(1, fd1, WR_STR1, sizeof(WR_STR1) - 1);
|
|
SAFE_WRITE(1, fd2, WR_STR1, sizeof(WR_STR1) - 1);
|
|
}
|
|
|
|
static void cleanup(void)
|
|
{
|
|
if (fd1 > 0)
|
|
SAFE_CLOSE(fd1);
|
|
|
|
if (fd2 > 0)
|
|
SAFE_CLOSE(fd2);
|
|
}
|
|
|
|
static struct tst_test test = {
|
|
.setup = setup,
|
|
.cleanup = cleanup,
|
|
.tcnt = ARRAY_SIZE(tcases),
|
|
.test = verify_lseek,
|
|
.needs_tmpdir = 1,
|
|
};
|