1 /* 2 * 3 * Copyright (c) International Business Machines Corp., 2001 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 13 * the GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 18 */ 19 20 /* 21 * DESCRIPTION 22 * Testcase to check open(2) sets errno to ENXIO correctly. 23 * 24 * ALGORITHM 25 * Create a named pipe using mknod(2). Attempt to 26 * open(2) the pipe for writing. The open(2) should 27 * fail with ENXIO. 28 */ 29 #include <sys/types.h> 30 #include <sys/stat.h> 31 #include <fcntl.h> 32 #include <errno.h> 33 #include <unistd.h> 34 #include "test.h" 35 36 char *TCID = "open06"; 37 int TST_TOTAL = 1; 38 39 static void setup(void); 40 static void cleanup(void); 41 42 static char fname[100] = "fifo"; 43 44 int main(int ac, char **av) 45 { 46 int lc; 47 48 tst_parse_opts(ac, av, NULL, NULL); 49 50 setup(); 51 52 for (lc = 0; TEST_LOOPING(lc); lc++) { 53 tst_count = 0; 54 55 TEST(open(fname, O_NONBLOCK | O_WRONLY)); 56 if (TEST_RETURN != -1) { 57 tst_resm(TFAIL, "open(2) succeeded unexpectedly"); 58 continue; 59 } 60 61 if (TEST_ERRNO != ENXIO) 62 tst_resm(TFAIL, "Expected ENXIO got %d", TEST_ERRNO); 63 else 64 tst_resm(TPASS, "call returned expected ENXIO error"); 65 } 66 67 cleanup(); 68 tst_exit(); 69 } 70 71 static void setup(void) 72 { 73 tst_sig(NOFORK, DEF_HANDLER, cleanup); 74 75 TEST_PAUSE; 76 77 tst_tmpdir(); 78 79 sprintf(fname, "%s.%d", fname, getpid()); 80 81 if (mknod(fname, S_IFIFO | 0644, 0) == -1) 82 tst_brkm(TBROK, cleanup, "mknod FAILED"); 83 } 84 85 static void cleanup(void) 86 { 87 unlink(fname); 88 89 tst_rmdir(); 90 } 91
