1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) Crackerjack Project., 2007
4 * Ported from Crackerjack to LTP by Masatake YAMATO <yamato@redhat.com>
5 * Copyright (c) 2011 Cyril Hrubis <chrubis@suse.cz>
6 * Copyright (c) 2017 Xiao Yang <yangx.jy@cn.fujitsu.com>
7 * Copyright (c) 2021 Xie Ziyao <xieziyao@huawei.com>
8 */
9
10 /*\
11 * [Description]
12 *
13 * Test io_setup invoked via syscall(2):
14 *
15 * - io_setup fails and returns EFAULT if ctxp is NULL.
16 * - io_setup fails and returns EINVAL if ctxp is not initialized to 0.
17 * - io_setup fails and returns EINVAL if nr_events is -1.
18 * - io_setup fails and returns EAGAIN if nr_events exceeds the limit
19 * of available events.
20 * - io_setup succeeds if both nr_events and ctxp are valid.
21 */
22
23 #include <linux/aio_abi.h>
24
25 #include "config.h"
26 #include "tst_test.h"
27 #include "lapi/syscalls.h"
28
run(void)29 static void run(void)
30 {
31 aio_context_t ctx;
32
33 TST_EXP_FAIL(tst_syscall(__NR_io_setup, 1, NULL), EFAULT,
34 "io_setup() when ctxp is NULL");
35
36 memset(&ctx, 1, sizeof(ctx));
37 TST_EXP_FAIL(tst_syscall(__NR_io_setup, 1, &ctx), EINVAL,
38 "io_setup() when ctxp is not initialized to 0");
39
40 memset(&ctx, 0, sizeof(ctx));
41 TST_EXP_FAIL(tst_syscall(__NR_io_setup, -1, &ctx), EINVAL,
42 "io_setup() when nr_events is -1");
43
44 unsigned aio_max = 0;
45 if (!access("/proc/sys/fs/aio-max-nr", F_OK)) {
46 SAFE_FILE_SCANF("/proc/sys/fs/aio-max-nr", "%u", &aio_max);
47 TST_EXP_FAIL(tst_syscall(__NR_io_setup, aio_max + 1, &ctx), EAGAIN,
48 "io_setup() when nr_events exceeds the limit");
49 } else {
50 tst_res(TCONF, "the aio-max-nr file did not exist");
51 }
52
53 TST_EXP_PASS(tst_syscall(__NR_io_setup, 1, &ctx),
54 "io_setup() when both nr_events and ctxp are valid");
55 TST_EXP_PASS_SILENT(tst_syscall(__NR_io_destroy, ctx));
56 }
57
58 static struct tst_test test = {
59 .needs_kconfigs = (const char *[]) {
60 "CONFIG_AIO=y",
61 NULL
62 },
63 .test_all = run,
64 };
65