74 lines
1.6 KiB
C
74 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2017 Cyril Hrubis <chrubis@suse.cz>
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*/
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/*
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* Basic test for the BLKGETSIZE and BLKGETSIZE64 ioctls.
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*
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* - BLKGETSIZE returns size in 512 byte blocks BLKGETSIZE64 in bytes
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* compare that they return the same value.
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* - lseek to the end of the device, this should work
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* - try to read from the device, read should return 0
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*/
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#include <stdint.h>
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#include <errno.h>
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#include <sys/mount.h>
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#include "tst_test.h"
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static int fd;
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static void verify_ioctl(void)
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{
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unsigned long size = 0;
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uint64_t size64 = 0;
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char buf;
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int ret;
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fd = SAFE_OPEN(tst_device->dev, O_RDONLY);
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SAFE_IOCTL(fd, BLKGETSIZE, &size);
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SAFE_IOCTL(fd, BLKGETSIZE64, &size64);
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if (size == size64/512) {
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tst_res(TPASS, "BLKGETSIZE returned %lu, BLKGETSIZE64 %llu",
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size, (unsigned long long)size64);
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} else {
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tst_res(TFAIL,
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"BLKGETSIZE returned %lu, BLKGETSIZE64 returned %llu",
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size, (unsigned long long)size64);
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}
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if (lseek(fd, size * 512, SEEK_SET) != (off_t)size * 512) {
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tst_res(TFAIL | TERRNO,
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"Cannot lseek to the end of the device");
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} else {
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tst_res(TPASS, "Could lseek to the end of the device");
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}
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ret = read(fd, &buf, 1);
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if (ret == 0) {
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tst_res(TPASS,
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"Got EOF when trying to read after the end of device");
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} else {
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tst_res(TFAIL | TERRNO,
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"Read at the end of device returned %i", ret);
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}
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SAFE_CLOSE(fd);
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}
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static void cleanup(void)
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{
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if (fd > 0)
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SAFE_CLOSE(fd);
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}
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static struct tst_test test = {
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.needs_device = 1,
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.needs_root = 1,
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.cleanup = cleanup,
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.test_all = verify_ioctl,
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};
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