139 lines
2.8 KiB
C
139 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* semop05 - test for EINTR and EIDRM errors
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*
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* Copyright (c) International Business Machines Corp., 2001
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* 03/2001 - Written by Wayne Boyer
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* 14/03/2008 Matthieu Fertré (Matthieu.Fertre@irisa.fr)
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include "tst_test.h"
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#include "libnewipc.h"
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#include "lapi/sem.h"
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#include "semop.h"
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static key_t semkey;
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static int sem_id = -1;
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static struct tst_ts timeout;
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struct test_case_t {
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union semun semunptr;
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short op;
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short flg;
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short num;
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int error;
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} tc[] = {
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{{1}, 0, 0, 2, EIDRM},
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{{0}, -1, 0, 3, EIDRM},
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{{1}, 0, 0, 4, EINTR},
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{{0}, -1, 0, 5, EINTR}
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};
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static void do_child(int i)
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{
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struct time64_variants *tv = &variants[tst_variant];
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struct sembuf s_buf = {
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.sem_op = tc[i].op,
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.sem_flg = tc[i].flg,
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.sem_num = tc[i].num,
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};
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TEST(call_semop(tv, sem_id, &s_buf, 1, tst_ts_get(&timeout)));
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if (TST_RET != -1) {
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tst_res(TFAIL, "call succeeded when error expected");
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exit(0);
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}
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if (TST_ERR == tc[i].error)
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tst_res(TPASS | TTERRNO, "expected failure");
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else
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tst_res(TFAIL | TTERRNO, "unexpected failure");
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exit(0);
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}
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static void sighandler(int sig)
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{
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if (sig != SIGHUP)
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tst_brk(TBROK, "unexpected signal %d received", sig);
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}
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static void setup(void)
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{
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struct time64_variants *tv = &variants[tst_variant];
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tst_res(TINFO, "Testing variant: %s", tv->desc);
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semop_supported_by_kernel(tv);
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timeout.type = tv->ts_type;
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tst_ts_set_sec(&timeout, 2);
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tst_ts_set_nsec(&timeout, 10000000);
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SAFE_SIGNAL(SIGHUP, sighandler);
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semkey = GETIPCKEY();
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sem_id = semget(semkey, PSEMS, IPC_CREAT | IPC_EXCL | SEM_RA);
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if (sem_id == -1)
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tst_brk(TBROK | TERRNO, "couldn't create semaphore in setup");
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}
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static void cleanup(void)
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{
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if (sem_id != -1) {
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if (semctl(sem_id, 0, IPC_RMID) == -1)
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tst_res(TWARN, "semaphore deletion failed.");
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}
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}
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static void run(unsigned int i)
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{
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pid_t pid;
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if (semctl(sem_id, tc[i].num, SETVAL, tc[i].semunptr) == -1)
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tst_brk(TBROK | TERRNO, "semctl() failed");
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pid = SAFE_FORK();
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if (pid == 0) {
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do_child(i);
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} else {
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TST_PROCESS_STATE_WAIT(pid, 'S', 0);
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/*
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* If we are testing for EIDRM then remove
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* the semaphore, else send a signal that
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* must be caught as we are testing for
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* EINTR.
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*/
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if (tc[i].error == EIDRM) {
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/* remove the semaphore resource */
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cleanup();
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} else {
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SAFE_KILL(pid, SIGHUP);
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}
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waitpid(pid, NULL, 0);
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}
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if (tc[i].error == EINTR)
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return;
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sem_id = semget(semkey, PSEMS, IPC_CREAT | IPC_EXCL | SEM_RA);
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if (sem_id == -1)
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tst_brk(TBROK | TERRNO, "couldn't recreate semaphore");
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}
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static struct tst_test test = {
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.test = run,
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.tcnt = ARRAY_SIZE(tc),
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.test_variants = ARRAY_SIZE(variants),
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.setup = setup,
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.cleanup = cleanup,
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.needs_tmpdir = 1,
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.forks_child = 1,
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};
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