122 lines
2.7 KiB
C
122 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2018 Google, Inc.
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*
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* Test simple tgkill() error cases.
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*/
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#include <pthread.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include "tst_safe_pthread.h"
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#include "tst_test.h"
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#include "tgkill.h"
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#define CHECK_ENOENT(x) ((x) == -1 && errno == ENOENT)
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static pthread_t child_thread;
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static pid_t parent_tgid;
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static pid_t parent_tid;
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static pid_t child_tid;
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static pid_t defunct_tid;
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static const int invalid_pid = -1;
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static void *child_thread_func(void *arg)
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{
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child_tid = sys_gettid();
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TST_CHECKPOINT_WAKE_AND_WAIT(0);
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return arg;
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}
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static void *defunct_thread_func(void *arg)
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{
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defunct_tid = sys_gettid();
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return arg;
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}
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static void setup(void)
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{
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sigset_t sigusr1;
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pthread_t defunct_thread;
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char defunct_tid_path[PATH_MAX];
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int ret;
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sigemptyset(&sigusr1);
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sigaddset(&sigusr1, SIGUSR1);
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pthread_sigmask(SIG_BLOCK, &sigusr1, NULL);
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parent_tgid = getpid();
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parent_tid = sys_gettid();
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SAFE_PTHREAD_CREATE(&child_thread, NULL, child_thread_func, NULL);
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TST_CHECKPOINT_WAIT(0);
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SAFE_PTHREAD_CREATE(&defunct_thread, NULL, defunct_thread_func, NULL);
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SAFE_PTHREAD_JOIN(defunct_thread, NULL);
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sprintf(defunct_tid_path, "/proc/%d/task/%d", getpid(), defunct_tid);
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ret = TST_RETRY_FN_EXP_BACKOFF(access(defunct_tid_path, R_OK),
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CHECK_ENOENT, 15);
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if (!CHECK_ENOENT(ret))
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tst_brk(TBROK, "Timeout, %s still exists", defunct_tid_path);
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}
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static void cleanup(void)
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{
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TST_CHECKPOINT_WAKE(0);
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SAFE_PTHREAD_JOIN(child_thread, NULL);
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}
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static const struct testcase {
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const char *desc;
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const int *tgid;
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const int *tid;
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const int sig;
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const int err;
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} testcases[] = {
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{ "Invalid tgid", &invalid_pid, &parent_tid, SIGUSR1, EINVAL },
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{ "Invalid tid", &parent_tgid, &invalid_pid, SIGUSR1, EINVAL },
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{ "Invalid signal", &parent_tgid, &parent_tid, -1, EINVAL },
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{ "Defunct tid", &parent_tgid, &defunct_tid, SIGUSR1, ESRCH },
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{ "Defunct tgid", &defunct_tid, &child_tid, SIGUSR1, ESRCH },
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{ "Valid tgkill call", &parent_tgid, &child_tid, SIGUSR1, 0 },
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};
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static void run(unsigned int i)
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{
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const struct testcase *tc = &testcases[i];
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TEST(sys_tgkill(*tc->tgid, *tc->tid, tc->sig));
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if (tc->err) {
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if (TST_RET < 0 && TST_ERR == tc->err)
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tst_res(TPASS | TTERRNO, "%s failed as expected",
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tc->desc);
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else
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tst_res(TFAIL | TTERRNO,
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"%s should have failed with %s", tc->desc,
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tst_strerrno(tc->err));
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} else {
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if (TST_RET == 0)
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tst_res(TPASS, "%s succeeded", tc->desc);
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else
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tst_res(TFAIL | TTERRNO, "%s failed", tc->desc);
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}
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}
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static struct tst_test test = {
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.tcnt = ARRAY_SIZE(testcases),
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.needs_checkpoints = 1,
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.setup = setup,
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.cleanup = cleanup,
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.test = run,
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.timeout = 20,
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};
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