25  * UNKNOWN_FD is an fd number that should never exist in the child, as it is
48 		fprintf(stderr, "%s: Child could not set DEATHSIG\n",  in __child()
55 		fprintf(stderr, "%s: Child failed to send fd number\n",  in __child()
63 	 * This blocking recv enables the parent to message the child.  in __child()
67 	 * indicating that the child should exit.  in __child()
74 					"%s: Child failed to disable ptrace\n",  in __child()
79 			fprintf(stderr, "Child received unknown command %c\n",  in __child()
85 			fprintf(stderr, "%s: Child failed to ack\n",  in __child()
91 		fprintf(stderr, "%s: Child failed to read from socket\n",  in __child()
99 static int child(int sk)  in child()  function
105 		fprintf(stderr, "%s: Child could not create memfd\n",  in child()
117 FIXTURE(child)  in FIXTURE()  argument
121 	 * from the child.  in FIXTURE()
124 	/* pid points to the child which we are fetching FDs from */  in FIXTURE()
126 	/* pidfd is the pidfd of the child */  in FIXTURE()
129 	 * sk is our side of the socketpair used to communicate with the child.  in FIXTURE()
130 	 * When it is closed, the child will exit.  in FIXTURE()
136 FIXTURE_SETUP(child)  in FIXTURE_SETUP()  argument
150 		if (child(sk_pair[1]))  in FIXTURE_SETUP()
161 	 * Wait for the child to complete setup. It'll send the remote memfd's  in FIXTURE_SETUP()
168 FIXTURE_TEARDOWN(child)  in FIXTURE_TEARDOWN()  argument
180 TEST_F(child, disable_ptrace)  in TEST_F()  argument
206 TEST_F(child, fetch_fd)  in TEST_F()  argument
225 TEST_F(child, test_unknown_fd)  in TEST_F()  argument
244 TEST_F(child, no_strange_EBADF)  in TEST_F()  argument