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 va_list ap;
32
33 va_start(ap, cmd);
34 arg = va_arg(ap, union semun);
35 va_end(ap);
36 return semctl(semid, semnum, cmd, arg);
37 }
38
sys_semctl(int semid,int semnum,int cmd,...)39 static int sys_semctl(int semid, int semnum, int cmd, ...)
40 {
41 va_list ap;
42
43 va_start(ap, cmd);
44 arg = va_arg(ap, union semun);
45 va_end(ap);
46 return tst_syscall(__NR_semctl, semid, semnum, cmd, arg);
47 }
48
49 static struct tcases {
50 int *sem_id;
51 int ipc_cmd;
52 void **buf;
53 int error;
54 char *message;
55 } tests[] = {
56 {&sem_id, -1, &semds_ptr, EINVAL, "invalid IPC command"},
57 {&bad_id, IPC_STAT, &semds_ptr, EINVAL, "invalid sem id"},
58 {&sem_id, GETALL, &bad_ptr, EFAULT, "invalid union arg"},
59 {&sem_id, IPC_SET, &bad_ptr, EFAULT, "invalid union arg"}
60 };
61
62 static struct test_variants
63 {
64 int (*semctl)(int semid, int semnum, int cmd, ...);
65 char *desc;
66 } variants[] = {
67 { .semctl = libc_semctl, .desc = "libc semctl()"},
68 #if (__NR_sys_semctl != __LTP__NR_INVALID_SYSCALL)
69 { .semctl = sys_semctl, .desc = "__NR_semctl syscall"},
70 #endif
71 };
72
verify_semctl(unsigned int n)73 static void verify_semctl(unsigned int n)
74 {
75 struct tcases *tc = &tests[n];
76 struct test_variants *tv = &variants[tst_variant];
77
78 if (tc->error == EFAULT && tv->semctl == libc_semctl) {
79 tst_res(TCONF, "EFAULT is skipped for libc variant");
80 return;
81 }
82
83 TST_EXP_FAIL(tv->semctl(*(tc->sem_id), 0, tc->ipc_cmd, *(tc->buf)),
84 tc->error, "semctl() with %s", tc->message);
85 }
86
setup(void)87 static void setup(void)
88 {
89 static key_t semkey;
90 struct test_variants *tv = &variants[tst_variant];
91
92 tst_res(TINFO, "Testing variant: %s", tv->desc);
93
94 semkey = GETIPCKEY();
95
96 sem_id = SAFE_SEMGET(semkey, PSEMS, IPC_CREAT | IPC_EXCL | SEM_RA);
97
98 bad_ptr = tst_get_bad_addr(NULL);
99 }
100
cleanup(void)101 static void cleanup(void)
102 {
103 if (sem_id != -1)
104 SAFE_SEMCTL(sem_id, 0, IPC_RMID);
105 }
106
107 static struct tst_test test = {
108 .setup = setup,
109 .cleanup = cleanup,
110 .test = verify_semctl,
111 .tcnt = ARRAY_SIZE(tests),
112 .test_variants = ARRAY_SIZE(variants),
113 };
114