1 // SPDX-License-Identifier: GPL-2.0
50 		return -1;  in __child()
57 		return -1;  in __child()
76 				return -1;  in __child()
81 			return -1;  in __child()
87 			return -1;  in __child()
93 		return -1;  in __child()
107 		ret = -1;  in child()
124 	/* pid points to the child which we are fetching FDs from */  in FIXTURE()
125 	pid_t pid;  in FIXTURE()  local
143 	self->sk = sk_pair[0];  in FIXTURE_SETUP()
145 	self->pid = fork();  in FIXTURE_SETUP()
146 	ASSERT_GE(self->pid, 0);  in FIXTURE_SETUP()
148 	if (self->pid == 0) {  in FIXTURE_SETUP()
157 	self->pidfd = sys_pidfd_open(self->pid, 0);  in FIXTURE_SETUP()
158 	ASSERT_GE(self->pidfd, 0);  in FIXTURE_SETUP()
161 	 * Wait for the child to complete setup. It'll send the remote memfd's  in FIXTURE_SETUP()
164 	ret = recv(sk_pair[0], &self->remote_fd, sizeof(self->remote_fd), 0);  in FIXTURE_SETUP()
165 	ASSERT_EQ(sizeof(self->remote_fd), ret);  in FIXTURE_SETUP()
172 	EXPECT_EQ(0, close(self->pidfd));  in FIXTURE_TEARDOWN()
173 	EXPECT_EQ(0, close(self->sk));  in FIXTURE_TEARDOWN()
175 	ret = wait_for_pid(self->pid);  in FIXTURE_TEARDOWN()
176 	if (!self->ignore_child_result)  in FIXTURE_TEARDOWN()
195 	ASSERT_EQ(1, send(self->sk, "P", 1, 0));  in TEST_F()
196 	ASSERT_EQ(1, recv(self->sk, &c, 1, 0));  in TEST_F()
198 	fd = sys_pidfd_getfd(self->pidfd, self->remote_fd, 0);  in TEST_F()
199 	EXPECT_EQ(-1, fd);  in TEST_F()
210 	fd = sys_pidfd_getfd(self->pidfd, self->remote_fd, 0);  in TEST_F()
213 	ret = sys_kcmp(getpid(), self->pid, KCMP_FILE, fd, self->remote_fd);  in TEST_F()
229 	fd = sys_pidfd_getfd(self->pidfd, UNKNOWN_FD, 0);  in TEST_F()
230 	EXPECT_EQ(-1, fd) {  in TEST_F()
240 	ASSERT_EQ(-1, sys_pidfd_getfd(0, 0, 1));  in TEST()
248 	self->ignore_child_result = true;  in TEST_F()
250 	fds.fd = self->pidfd;  in TEST_F()
253 	ASSERT_EQ(kill(self->pid, SIGKILL), 0);  in TEST_F()
258 	 * between exit_files() and release_task(), and get a non-null task  in TEST_F()
263 	EXPECT_EQ(sys_pidfd_getfd(self->pidfd, self->remote_fd, 0), -1);  in TEST_F()
267 #if __NR_pidfd_getfd == -1