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