plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | |
| 20 | /* |
| 21 | * NAME |
nstraz | fa31d55 | 2002-05-14 16:50:06 +0000 | [diff] [blame^] | 22 | * write05.c |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 23 | * |
| 24 | * DESCRIPTION |
| 25 | * Check the return value, and errnos of write(2) |
| 26 | * - when the file descriptor is invalid - EBADF |
| 27 | * - when the buf parameter is invalid - EFAULT |
| 28 | * - on an attempt to write to a pipe that is not open for reading - EPIPE |
| 29 | * |
| 30 | * ALGORITHM |
| 31 | * Attempt to write on a file with negative file descriptor, check for -1 |
| 32 | * Attempt to write on a file with invalid buffer, check for -1 |
| 33 | * Open a pipe and close the read end, attempt to write to the write |
| 34 | * end, check for -1. |
| 35 | * |
| 36 | * USAGE: <for command-line> |
nstraz | fa31d55 | 2002-05-14 16:50:06 +0000 | [diff] [blame^] | 37 | * write05 [-c n] [-e] [-i n] [-I x] [-P x] [-t] |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 38 | * where, -c n : Run n copies concurrently. |
| 39 | * -e : Turn on errno logging. |
| 40 | * -i n : Execute test n times. |
| 41 | * -I x : Execute test for x seconds. |
| 42 | * -P x : Pause for x seconds between iterations. |
| 43 | * -t : Turn on syscall timing. |
| 44 | * |
| 45 | * History |
| 46 | * 07/2001 John George |
| 47 | * -Ported |
robbiew | 4644c7e | 2002-04-26 14:33:32 +0000 | [diff] [blame] | 48 | * 04/2002 wjhuie sigset cleanups |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 49 | * |
| 50 | * Restrictions |
| 51 | * None |
| 52 | */ |
| 53 | |
| 54 | #include <errno.h> |
| 55 | #include <stdio.h> |
| 56 | #include <sys/wait.h> |
| 57 | #include "test.h" |
| 58 | #include "usctest.h" |
| 59 | |
| 60 | void setup(void); |
| 61 | void cleanup(void); |
| 62 | |
| 63 | /* 0 terminated list of expected errnos */ |
| 64 | int exp_enos[] = {9,14,32,0}; |
| 65 | |
nstraz | fa31d55 | 2002-05-14 16:50:06 +0000 | [diff] [blame^] | 66 | char *TCID = "write05"; /* Test program identifier */ |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 67 | int TST_TOTAL = 1; /* Total number of test cases */ |
| 68 | extern int Tst_count; |
| 69 | char filename[100]; |
| 70 | |
| 71 | main(int argc, char **argv) |
| 72 | { |
| 73 | int lc; /* loop counter */ |
| 74 | char *msg; /* message returned from parse_opts */ |
| 75 | |
| 76 | char pbuf[BUFSIZ]; |
| 77 | int pipefildes[2]; |
| 78 | int status, pid, fd; |
| 79 | |
| 80 | /* parse standard options */ |
| 81 | if ((msg = parse_opts(argc, argv, (option_t *)NULL, NULL)) != |
| 82 | (char *) NULL) { |
| 83 | tst_brkm(TBROK, cleanup, "OPTION PARSING ERROR - %s", msg); |
| 84 | /*NOTREACHED*/ |
| 85 | } |
| 86 | |
| 87 | /* global setup */ |
| 88 | setup(); |
| 89 | |
| 90 | /* The following loop checks looping state if -i option given */ |
| 91 | for (lc = 0; TEST_LOOPING(lc); lc++) { |
| 92 | |
| 93 | /* reset Tst_count in case we are looping */ |
| 94 | Tst_count = 0; |
| 95 | |
| 96 | block1: |
| 97 | tst_resm(TINFO, "Enter Block 1: test with bad fd"); |
| 98 | if (write(-1, pbuf, 1) != -1) { |
| 99 | tst_resm(TFAIL, "write of invalid fd passed"); |
| 100 | } else { |
| 101 | TEST_ERROR_LOG(errno); |
| 102 | if (errno != EBADF) { |
| 103 | tst_resm(TFAIL, "expected EBADF got %d", errno); |
| 104 | } |
| 105 | tst_resm(TPASS, "received EBADF as expected."); |
| 106 | } |
| 107 | tst_resm(TINFO, "Exit Block 1"); |
| 108 | |
| 109 | block2: |
| 110 | tst_resm(TINFO, "Enter Block 2: test with a bad address"); |
| 111 | fd = creat(filename, 0644); |
| 112 | if (fd < 0) { |
| 113 | tst_resm(TFAIL, "creating a new file failed"); |
| 114 | cleanup(); |
| 115 | /*NOTREACHED*/ |
| 116 | } |
| 117 | if (write(fd, (void *)-1, 10) != -1) { |
| 118 | tst_resm(TFAIL, "write() on an invalid buffer " |
| 119 | "succeeded, but should have failed"); |
| 120 | cleanup(); |
| 121 | /*NOTREACHED*/ |
| 122 | } else { |
| 123 | TEST_ERROR_LOG(errno); |
| 124 | if (errno != EFAULT) { |
| 125 | tst_resm(TFAIL, "write() returned illegal " |
| 126 | "errno: expected EFAULT, got %d", |
| 127 | errno); |
| 128 | cleanup(); |
| 129 | /*NOTREACHED*/ |
| 130 | } |
| 131 | tst_resm(TPASS, "received EFAULT as expected."); |
| 132 | } |
| 133 | tst_resm(TINFO, "Exit Block 2"); |
| 134 | |
| 135 | block3: |
| 136 | tst_resm(TINFO, "Enter Block 3: test with invalid pipe"); |
| 137 | if ((pid = fork()) == 0) { /* child */ |
robbiew | 4644c7e | 2002-04-26 14:33:32 +0000 | [diff] [blame] | 138 | if (signal(SIGPIPE, SIG_IGN) == SIG_ERR) { |
| 139 | tst_resm(TINFO, "signal failed"); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 140 | } |
| 141 | if (pipe(pipefildes) == -1) { |
| 142 | tst_brkm(TBROK, NULL, "can't open pipe"); |
| 143 | exit(errno); |
| 144 | } |
| 145 | close(pipefildes[0]); |
| 146 | if (write(pipefildes[1], pbuf, 1) != -1) { |
| 147 | tst_resm(TFAIL, "write on read-closed" |
| 148 | "pipe succeeded"); |
| 149 | exit(-1); |
| 150 | } else { |
| 151 | if (errno != EPIPE) { |
| 152 | tst_resm(TFAIL, "write() failed to set" |
| 153 | " errno to EPIPE, got: %d", |
| 154 | errno); |
| 155 | exit(errno); |
| 156 | } |
| 157 | exit(0); |
| 158 | } |
| 159 | } else { |
| 160 | if (pid < 0) { |
| 161 | tst_resm(TFAIL, "Fork failed"); |
| 162 | } |
| 163 | wait(&status); |
| 164 | if (WIFSIGNALED(status) == SIGPIPE) { |
| 165 | tst_resm(TFAIL, "child set SIGPIPE in exit"); |
| 166 | } else if (WEXITSTATUS(status) != 0) { |
| 167 | TEST_ERROR_LOG(WEXITSTATUS(status)); |
| 168 | tst_resm(TFAIL, "exit status from child " |
| 169 | "expected 0 got %d", status >> 8); |
| 170 | } else { |
| 171 | TEST_ERROR_LOG(EPIPE); |
| 172 | tst_resm(TPASS, "received EPIPE as expected."); |
| 173 | } |
| 174 | tst_resm(TINFO, "Exit Block 3"); |
| 175 | } |
| 176 | } |
| 177 | cleanup(); |
| 178 | /*NOTREACHED*/ |
| 179 | } |
| 180 | |
| 181 | /* |
| 182 | * setup() |
| 183 | * performs all ONE TIME setup for this test |
| 184 | */ |
| 185 | void |
| 186 | setup(void) |
| 187 | { |
| 188 | /* capture signals */ |
| 189 | tst_sig(FORK, DEF_HANDLER, cleanup); |
| 190 | |
| 191 | |
| 192 | /* Set up the expected error numbers for -e option */ |
| 193 | TEST_EXP_ENOS(exp_enos); |
| 194 | |
| 195 | /* Pause if that option was specified |
| 196 | * TEST_PAUSE contains the code to fork the test with the -i option. |
| 197 | * You want to make sure you do this before you create your temporary |
| 198 | * directory. |
| 199 | */ |
| 200 | TEST_PAUSE; |
| 201 | |
| 202 | /* Create a unique temporary directory and chdir() to it. */ |
| 203 | tst_tmpdir(); |
| 204 | |
nstraz | fa31d55 | 2002-05-14 16:50:06 +0000 | [diff] [blame^] | 205 | sprintf(filename, "write05.%d", getpid()); |
plars | 865695b | 2001-08-27 22:15:12 +0000 | [diff] [blame] | 206 | } |
| 207 | |
| 208 | /* |
| 209 | * cleanup() |
| 210 | * performs all ONE TIME cleanup for this test at |
| 211 | * completion or premature exit |
| 212 | */ |
| 213 | void |
| 214 | cleanup(void) |
| 215 | { |
| 216 | /* |
| 217 | * print timing stats if that option was specified. |
| 218 | * print errno log if that option was specified. |
| 219 | */ |
| 220 | TEST_CLEANUP; |
| 221 | |
| 222 | unlink(filename); |
| 223 | tst_rmdir(); |
| 224 | |
| 225 | /* exit with return code appropriate for results */ |
| 226 | tst_exit(); |
| 227 | /*NOTREACHED*/ |
| 228 | } |