1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) International Business Machines Corp., 2001
4 *
5 * HISTORY
6 * 03/2001 - Written by Wayne Boyer
7 */
8 /*\
9 * [Description]
10 *
11 * Test for semctl() EINVAL and EFAULT errors
12 */
13
14 #include "tst_safe_sysv_ipc.h"
15 #include "tst_test.h"
16 #include "lapi/sem.h"
17 #include "libnewipc.h"
18 #include "lapi/syscalls.h"
19
20 static int sem_id = -1;
21 static int bad_id = -1;
22
23 static struct semid_ds sem_ds;
24 static union semun sem_un = {.buf = &sem_ds};
25 static void *semds_ptr = &sem_un;
26 static void *bad_ptr;
27 static union semun arg = {0};
28
libc_semctl(int semid,int semnum,int cmd,...)29 static int libc_semctl(int semid, int semnum, int cmd, ...)
30 {
31 return semctl(semid, semnum, cmd, arg);
32 }
33
sys_semctl(int semid,int semnum,int cmd,...)34 static int sys_semctl(int semid, int semnum, int cmd, ...)
35 {
36 return tst_syscall(__NR_semctl, semid, semnum, cmd, arg);
37 }
38
39 static struct tcases {
40 int *sem_id;
41 int ipc_cmd;
42 void **buf;
43 int error;
44 char *message;
45 } tests[] = {
46 {&sem_id, -1, &semds_ptr, EINVAL, "invalid IPC command"},
47 {&bad_id, IPC_STAT, &semds_ptr, EINVAL, "invalid sem id"},
48 {&sem_id, GETALL, &bad_ptr, EFAULT, "invalid union arg"},
49 {&sem_id, IPC_SET, &bad_ptr, EFAULT, "invalid union arg"}
50 };
51
52 static struct test_variants
53 {
54 int (*semctl)(int semid, int semnum, int cmd, ...);
55 char *desc;
56 } variants[] = {
57 { .semctl = libc_semctl, .desc = "libc semctl()"},
58 #if (__NR_sys_semctl != __LTP__NR_INVALID_SYSCALL)
59 { .semctl = sys_semctl, .desc = "__NR_semctl syscall"},
60 #endif
61 };
62
verify_semctl(unsigned int n)63 static void verify_semctl(unsigned int n)
64 {
65 struct tcases *tc = &tests[n];
66 struct test_variants *tv = &variants[tst_variant];
67
68 if (tc->error == EFAULT && tv->semctl == libc_semctl) {
69 tst_res(TCONF, "EFAULT is skipped for libc variant");
70 return;
71 }
72
73 TST_EXP_FAIL(tv->semctl(*(tc->sem_id), 0, tc->ipc_cmd, *(tc->buf)),
74 tc->error, "semctl() with %s", tc->message);
75 }
76
setup(void)77 static void setup(void)
78 {
79 static key_t semkey;
80 struct test_variants *tv = &variants[tst_variant];
81
82 tst_res(TINFO, "Testing variant: %s", tv->desc);
83
84 semkey = GETIPCKEY();
85
86 sem_id = SAFE_SEMGET(semkey, PSEMS, IPC_CREAT | IPC_EXCL | SEM_RA);
87
88 bad_ptr = tst_get_bad_addr(NULL);
89 }
90
cleanup(void)91 void cleanup(void)
92 {
93 if (sem_id != -1)
94 SAFE_SEMCTL(sem_id, 0, IPC_RMID);
95 }
96
97 static struct tst_test test = {
98 .setup = setup,
99 .cleanup = cleanup,
100 .test = verify_semctl,
101 .tcnt = ARRAY_SIZE(tests),
102 .test_variants = ARRAY_SIZE(variants),
103 };
104