1*49cdfc7eSAndroid Build Coastguard Worker // SPDX-License-Identifier: GPL-2.0-or-later 2*49cdfc7eSAndroid Build Coastguard Worker /* 3*49cdfc7eSAndroid Build Coastguard Worker * Copyright (c) International Business Machines Corp., 2002 4*49cdfc7eSAndroid Build Coastguard Worker * Copyright (c) 2003-2023 Linux Test Project 5*49cdfc7eSAndroid Build Coastguard Worker */ 6*49cdfc7eSAndroid Build Coastguard Worker 7*49cdfc7eSAndroid Build Coastguard Worker /*\ 8*49cdfc7eSAndroid Build Coastguard Worker * [Description] 9*49cdfc7eSAndroid Build Coastguard Worker * 10*49cdfc7eSAndroid Build Coastguard Worker * Verify that, an attempt to write to the read end of a pipe fails with EBADF 11*49cdfc7eSAndroid Build Coastguard Worker * and an attempt to read from the write end of a pipe also fails with EBADF. 12*49cdfc7eSAndroid Build Coastguard Worker */ 13*49cdfc7eSAndroid Build Coastguard Worker 14*49cdfc7eSAndroid Build Coastguard Worker #include "tst_test.h" 15*49cdfc7eSAndroid Build Coastguard Worker 16*49cdfc7eSAndroid Build Coastguard Worker static int fd[2]; 17*49cdfc7eSAndroid Build Coastguard Worker verify_pipe(void)18*49cdfc7eSAndroid Build Coastguard Workerstatic void verify_pipe(void) 19*49cdfc7eSAndroid Build Coastguard Worker { 20*49cdfc7eSAndroid Build Coastguard Worker char buf[] = "abcdef"; 21*49cdfc7eSAndroid Build Coastguard Worker 22*49cdfc7eSAndroid Build Coastguard Worker SAFE_PIPE(fd); 23*49cdfc7eSAndroid Build Coastguard Worker 24*49cdfc7eSAndroid Build Coastguard Worker TST_EXP_FAIL2(write(fd[0], "A", 1), EBADF); 25*49cdfc7eSAndroid Build Coastguard Worker TST_EXP_FAIL2(read(fd[1], buf, 1), EBADF); 26*49cdfc7eSAndroid Build Coastguard Worker 27*49cdfc7eSAndroid Build Coastguard Worker SAFE_CLOSE(fd[0]); 28*49cdfc7eSAndroid Build Coastguard Worker SAFE_CLOSE(fd[1]); 29*49cdfc7eSAndroid Build Coastguard Worker } 30*49cdfc7eSAndroid Build Coastguard Worker cleanup(void)31*49cdfc7eSAndroid Build Coastguard Workerstatic void cleanup(void) 32*49cdfc7eSAndroid Build Coastguard Worker { 33*49cdfc7eSAndroid Build Coastguard Worker if (fd[0] > 0) 34*49cdfc7eSAndroid Build Coastguard Worker SAFE_CLOSE(fd[0]); 35*49cdfc7eSAndroid Build Coastguard Worker if (fd[1] > 0) 36*49cdfc7eSAndroid Build Coastguard Worker SAFE_CLOSE(fd[1]); 37*49cdfc7eSAndroid Build Coastguard Worker } 38*49cdfc7eSAndroid Build Coastguard Worker 39*49cdfc7eSAndroid Build Coastguard Worker static struct tst_test test = { 40*49cdfc7eSAndroid Build Coastguard Worker .test_all = verify_pipe, 41*49cdfc7eSAndroid Build Coastguard Worker .cleanup = cleanup 42*49cdfc7eSAndroid Build Coastguard Worker }; 43