1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (C) 2012 Linux Test Project, Inc.
4 * Copyright (C) 2023-2024 Cyril Hrubis <[email protected]>
5 */
6
7 /*\
8 * [Description]
9 *
10 * Verify that readahead() syscall fails with:
11 *
12 * - EBADF when fd is not a valid file descriptor or is not open for reading.
13 * - EINVAL when fd does not refer to a file type to which readahead()
14 * can be applied.
15 */
16 #define _GNU_SOURCE
17 #include <errno.h>
18 #include <fcntl.h>
19 #include <stdio.h>
20 #include <stdlib.h>
21 #include <unistd.h>
22 #include <sys/socket.h>
23 #include <sys/stat.h>
24 #include <sys/syscall.h>
25 #include <sys/types.h>
26 #include "config.h"
27 #include "tst_test.h"
28 #include "lapi/syscalls.h"
29
30 #if defined(__NR_readahead)
31
test_bad_fd(void)32 static void test_bad_fd(void)
33 {
34 int fd[2];
35
36 TST_EXP_FAIL(readahead(-1, 0, getpagesize()), EBADF,
37 "readahead() with fd = -1");
38
39 SAFE_PIPE(fd);
40 SAFE_CLOSE(fd[0]);
41 SAFE_CLOSE(fd[1]);
42
43 TST_EXP_FAIL(readahead(fd[0], 0, getpagesize()), EBADF,
44 "readahead() with invalid fd");
45 }
46
test_invalid_fd(struct tst_fd * fd)47 static void test_invalid_fd(struct tst_fd *fd)
48 {
49
50 switch (fd->type) {
51 /* These succeed */
52 case TST_FD_FILE:
53 case TST_FD_MEMFD:
54 case TST_FD_MEMFD_SECRET:
55 case TST_FD_PROC_MAPS:
56 case TST_FD_PIDFD:
57 return;
58 default:
59 break;
60 }
61
62 int exp_errnos[] = {EBADF, EINVAL, ESPIPE};
63
64 TST_EXP_FAIL_ARR(readahead(fd->fd, 0, getpagesize()), exp_errnos,
65 ARRAY_SIZE(exp_errnos), "readahead() on %s", tst_fd_desc(fd));
66 }
67
test_readahead(void)68 static void test_readahead(void)
69 {
70 test_bad_fd();
71
72 TST_FD_FOREACH(fd)
73 test_invalid_fd(&fd);
74 }
75
setup(void)76 static void setup(void)
77 {
78 /* check if readahead syscall is supported */
79 tst_syscall(__NR_readahead, 0, 0, 0);
80 }
81
82 static struct tst_test test = {
83 .needs_tmpdir = 1,
84 .setup = setup,
85 .test_all = test_readahead,
86 };
87
88 #else /* __NR_readahead */
89 TST_TEST_TCONF("System doesn't support __NR_readahead");
90 #endif
91