135 lines
2.8 KiB
C
135 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) International Business Machines Corp., 2001
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* Ported to LTP: Wayne Boyer
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* Copyright (c) 2017 Fujitsu Ltd.
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* 04/2017 Modified by Jinhui Huang
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*/
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/*
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* DESCRIPTION
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* test 1:
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* Read with an invalid file descriptor, and expect an EBADF.
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*
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* test 2:
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* The parameter passed to read is a directory, check if the errno is
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* set to EISDIR.
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*
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* test 3:
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* Buf is outside the accessible address space, expect an EFAULT.
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*
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* test 4:
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* The file was opened with the O_DIRECT flag, and transfer sizes was not
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* multiples of the logical block size of the file system, expect an
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* EINVAL.
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*
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* test 5:
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* The file was opened with the O_DIRECT flag, and the alignment of the
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* user buffer was not multiples of the logical block size of the file
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* system, expect an EINVAL.
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*/
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#define _GNU_SOURCE
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include "tst_test.h"
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static int badfd = -1;
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static int fd2, fd3, fd4 = -1;
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static char buf[BUFSIZ];
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static void *bufaddr = buf;
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static void *outside_buf = (void *)-1;
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static void *addr4;
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static void *addr5;
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static long fs_type;
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static struct tcase {
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int *fd;
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void **buf;
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size_t count;
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int exp_error;
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} tcases[] = {
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{&badfd, &bufaddr, 1, EBADF},
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{&fd2, &bufaddr, 1, EISDIR},
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#ifndef UCLINUX
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{&fd3, &outside_buf, 1, EFAULT},
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#endif
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{&fd4, &addr4, 1, EINVAL},
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{&fd4, &addr5, 4096, EINVAL},
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};
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static void verify_read(unsigned int n)
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{
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struct tcase *tc = &tcases[n];
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if (tc->fd == &fd4 && *tc->fd == -1) {
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tst_res(TCONF, "O_DIRECT not supported on %s filesystem",
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tst_fs_type_name(fs_type));
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return;
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}
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TEST(read(*tc->fd, *tc->buf, tc->count));
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if (*tc->fd == fd4 && TST_RET >= 0) {
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tst_res(TPASS,
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"O_DIRECT unaligned reads fallbacks to buffered I/O");
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return;
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}
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if (TST_RET != -1) {
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tst_res(TFAIL, "read() succeeded unexpectedly");
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return;
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}
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if (TST_ERR == tc->exp_error) {
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tst_res(TPASS | TTERRNO, "read() failed as expected");
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} else {
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tst_res(TFAIL | TTERRNO, "read() failed unexpectedly, "
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"expected %s", tst_strerrno(tc->exp_error));
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}
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}
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static void setup(void)
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{
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fd2 = SAFE_OPEN(".", O_DIRECTORY);
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SAFE_FILE_PRINTF("test_file", "A");
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fd3 = SAFE_OPEN("test_file", O_RDWR);
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#if !defined(UCLINUX)
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outside_buf = SAFE_MMAP(0, 1, PROT_NONE,
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MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
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#endif
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addr4 = SAFE_MEMALIGN(getpagesize(), (4096 * 10));
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addr5 = addr4 + 1;
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fs_type = tst_fs_type(".");
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if (fs_type != TST_TMPFS_MAGIC)
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fd4 = SAFE_OPEN("test_file", O_RDWR | O_DIRECT);
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}
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static void cleanup(void)
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{
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free(addr4);
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if (fd4 > 0)
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SAFE_CLOSE(fd4);
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if (fd3 > 0)
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SAFE_CLOSE(fd3);
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if (fd2 > 0)
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SAFE_CLOSE(fd2);
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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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.test = verify_read,
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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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