24  * UNKNOWN_FD is an fd number that should never exist in the child, as it is
47 		fprintf(stderr, "%s: Child could not set DEATHSIG\n",  in __child()
54 		fprintf(stderr, "%s: Child failed to send fd number\n",  in __child()
62 	 * This blocking recv enables the parent to message the child.  in __child()
66 	 * indicating that the child should exit.  in __child()
73 					"%s: Child failed to disable ptrace\n",  in __child()
78 			fprintf(stderr, "Child received unknown command %c\n",  in __child()
84 			fprintf(stderr, "%s: Child failed to ack\n",  in __child()
90 		fprintf(stderr, "%s: Child failed to read from socket\n",  in __child()
98 static int child(int sk)  in child()  function
104 		fprintf(stderr, "%s: Child could not create memfd\n",  in child()
116 FIXTURE(child)  in FIXTURE()  argument
120 	 * from the child.  in FIXTURE()
123 	/* pid points to the child which we are fetching FDs from */  in FIXTURE()
125 	/* pidfd is the pidfd of the child */  in FIXTURE()
128 	 * sk is our side of the socketpair used to communicate with the child.  in FIXTURE()
129 	 * When it is closed, the child will exit.  in FIXTURE()
134 FIXTURE_SETUP(child)  in FIXTURE_SETUP()  argument
148 		if (child(sk_pair[1]))  in FIXTURE_SETUP()
159 	 * Wait for the child to complete setup. It'll send the remote memfd's  in FIXTURE_SETUP()
166 FIXTURE_TEARDOWN(child)  in FIXTURE_TEARDOWN()  argument
174 TEST_F(child, disable_ptrace)  in TEST_F()  argument
200 TEST_F(child, fetch_fd)  in TEST_F()  argument
219 TEST_F(child, test_unknown_fd)  in TEST_F()  argument