1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved.
4 * Author: Saji Kumar.V.R <[email protected]>
5 *
6 * Description:
7 * This case tests capget() syscall whether works well on three versions.
8 * Also, it checks the results buffer.
9 */
10 #include <sys/types.h>
11 #include "tst_test.h"
12 #include "lapi/syscalls.h"
13 #include <linux/capability.h>
14
15 static pid_t pid;
16 static struct __user_cap_header_struct *hdr;
17 static struct __user_cap_data_struct *data;
18
19 static struct tcase {
20 int version;
21 char *message;
22 } tcases[] = {
23 {0x19980330, "LINUX_CAPABILITY_VERSION_1"},
24 {0x20071026, "LINUX_CAPABILITY_VERSION_2"},
25 {0x20080522, "LINUX_CAPABILITY_VERSION_3"},
26 };
27
verify_capget(unsigned int n)28 static void verify_capget(unsigned int n)
29 {
30 struct tcase *tc = &tcases[n];
31
32 hdr->version = tc->version;
33 hdr->pid = pid;
34
35 TST_EXP_PASS(tst_syscall(__NR_capget, hdr, data),
36 "capget() with %s", tc->message);
37
38 if (data[0].effective & 1 << CAP_NET_RAW)
39 tst_res(TFAIL, "capget() gets CAP_NET_RAW unexpectedly in pE");
40 else
41 tst_res(TPASS, "capget() doesn't get CAP_NET_RAW as expected in PE");
42 }
43
setup(void)44 static void setup(void)
45 {
46 pid = getpid();
47 }
48
49 static struct tst_test test = {
50 .setup = setup,
51 .tcnt = ARRAY_SIZE(tcases),
52 .test = verify_capget,
53 .caps = (struct tst_cap []) {
54 TST_CAP(TST_CAP_DROP, CAP_NET_RAW),
55 {}
56 },
57 .bufs = (struct tst_buffers []) {
58 {&hdr, .size = sizeof(*hdr)},
59 {&data, .size = 2 * sizeof(*data)},
60 {},
61 }
62 };
63