subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 1 | /* |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 2 | * Copyright (C) 2007 Monakhov Dmitriy |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 3 | * |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; either version 2 of the License, or |
| 7 | * (at your option) any later version. |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 8 | * |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| 12 | * the GNU General Public License for more details. |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 13 | * |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
Wanlong Gao | 4548c6c | 2012-10-19 18:03:36 +0800 | [diff] [blame] | 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 17 | */ |
| 18 | |
| 19 | /* |
| 20 | * NAME |
| 21 | * writev06.c |
| 22 | * |
| 23 | * DESCRIPTION |
| 24 | * These testcases are written to test fault in pages readable |
| 25 | * feature in generic write path. Because before actual write |
| 26 | * kernel may want check is buffer passed is realy readable. |
| 27 | * |
| 28 | * USAGE: <for command-line> |
| 29 | * writev06 [-c n] [-e] [-i n] [-I x] [-P x] [-t] |
| 30 | * where, -c n : Run n copies concurrently. |
| 31 | * -e : Turn on errno logging. |
| 32 | * -i n : Execute test n times. |
| 33 | * -I x : Execute test for x seconds. |
| 34 | * -P x : Pause for x seconds between iterations. |
| 35 | * -t : Turn on syscall timing. |
subrata_modak | bdbaec5 | 2009-02-26 12:14:51 +0000 | [diff] [blame] | 36 | * |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 37 | * History |
| 38 | * |
| 39 | * Restrictions |
| 40 | * NONE |
| 41 | */ |
| 42 | |
| 43 | #include <sys/types.h> |
| 44 | #include <signal.h> |
| 45 | #include <sys/uio.h> |
| 46 | #include <fcntl.h> |
| 47 | #include <memory.h> |
| 48 | #include <errno.h> |
Garrett Cooper | e8530df | 2010-12-21 11:37:57 -0800 | [diff] [blame] | 49 | #include "test.h" |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 50 | #include <sys/mman.h> |
| 51 | |
| 52 | #define K_1 1024 |
| 53 | #define NBUFS 2 |
| 54 | #define MAX_IOVEC 2 |
| 55 | #define DATA_FILE "writev_data_file" |
| 56 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 57 | int page_size; |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 58 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 59 | char *good_addr[2] = { NULL, NULL }; |
| 60 | char *bad_addr[2] = { NULL, NULL }; |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 61 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 62 | struct iovec wr_iovec[MAX_IOVEC] = { |
| 63 | {(caddr_t) - 1, 1}, |
| 64 | {(caddr_t) - 1, 1} |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 65 | }; |
| 66 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 67 | char name[K_1], f_name[K_1]; |
| 68 | int fd[2], in_sighandler; |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 69 | |
| 70 | char *TCID = "writev06"; |
| 71 | int TST_TOTAL = 1; |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 72 | |
| 73 | void sighandler(int); |
| 74 | void setup(void); |
| 75 | void cleanup(void); |
| 76 | int fail; |
| 77 | |
| 78 | int main(int argc, char **argv) |
| 79 | { |
Cyril Hrubis | 89af32a | 2012-10-24 16:39:11 +0200 | [diff] [blame] | 80 | int lc; |
Cyril Hrubis | 0b9589f | 2014-05-27 17:40:33 +0200 | [diff] [blame] | 81 | const char *msg; |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 82 | |
Garrett Cooper | 45e285d | 2010-11-22 12:19:25 -0800 | [diff] [blame] | 83 | if ((msg = parse_opts(argc, argv, NULL, NULL)) != NULL) { |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 84 | tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 85 | |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 86 | } |
| 87 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 88 | setup(); /* set "tstdir", and "testfile" vars */ |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 89 | |
| 90 | /* The following loop checks looping state if -i option given */ |
| 91 | for (lc = 0; TEST_LOOPING(lc); lc++) { |
| 92 | |
Caspar Zhang | d59a659 | 2013-03-07 14:59:12 +0800 | [diff] [blame] | 93 | /* reset tst_count in case we are looping */ |
| 94 | tst_count = 0; |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 95 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 96 | fd[1] = -1; /* Invalid file descriptor */ |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 97 | |
| 98 | if (signal(SIGTERM, sighandler) == SIG_ERR) { |
| 99 | perror("signal"); |
| 100 | tst_resm(TFAIL, "signal() SIGTERM FAILED"); |
| 101 | cleanup(); |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 102 | |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 103 | } |
| 104 | |
| 105 | if (signal(SIGPIPE, sighandler) == SIG_ERR) { |
| 106 | perror("signal"); |
| 107 | tst_resm(TFAIL, "signal() SIGPIPE FAILED"); |
| 108 | cleanup(); |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 109 | |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 110 | } |
| 111 | |
| 112 | if ((fd[0] = open(f_name, O_WRONLY | O_CREAT, 0666)) < 0) { |
| 113 | tst_resm(TFAIL, "open(2) failed: fname = %s, " |
| 114 | "errno = %d", f_name, errno); |
| 115 | cleanup(); |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 116 | |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 117 | } |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 118 | |
| 119 | /* |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 120 | * Iovecs passed to writev points to valid (readable) regions, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 121 | * so all bytes must be successfully written. |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 122 | */ |
| 123 | //block1: |
| 124 | |
| 125 | tst_resm(TINFO, "Enter block 1"); |
| 126 | fail = 0; |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 127 | |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 128 | TEST(writev(fd[0], wr_iovec, 2)); |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 129 | if (TEST_RETURN >= 0) { |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 130 | if (TEST_RETURN == 2) { |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 131 | tst_resm(TINFO, |
| 132 | "writev returned %d as expected", 2); |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 133 | } else { |
| 134 | tst_resm(TFAIL, "Expected nbytes = %d, got " |
subrata_modak | 923b23f | 2009-11-02 13:57:16 +0000 | [diff] [blame] | 135 | "%ld", 2, TEST_RETURN); |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 136 | fail = 1; |
| 137 | } |
| 138 | } else { |
Wanlong Gao | 354ebb4 | 2012-12-07 10:10:04 +0800 | [diff] [blame] | 139 | tst_resm(TFAIL | TTERRNO, |
| 140 | "Error writev return value = %ld", |
subrata_modak | 923b23f | 2009-11-02 13:57:16 +0000 | [diff] [blame] | 141 | TEST_RETURN); |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 142 | fail = 1; |
| 143 | } |
| 144 | if (fail) { |
| 145 | tst_resm(TINFO, "block 1 FAILED"); |
| 146 | } else { |
| 147 | tst_resm(TINFO, "block 1 PASSED"); |
| 148 | } |
| 149 | tst_resm(TINFO, "Exit block 1"); |
| 150 | } |
| 151 | cleanup(); |
Garrett Cooper | 2aca6fc | 2010-12-19 03:12:40 -0800 | [diff] [blame] | 152 | tst_exit(); |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 153 | |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 154 | } |
| 155 | |
| 156 | /* |
| 157 | * setup() |
| 158 | * performs all ONE TIME setup for this test |
| 159 | */ |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 160 | void setup(void) |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 161 | { |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 162 | |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 163 | tst_sig(FORK, DEF_HANDLER, cleanup); |
| 164 | |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 165 | /* Pause if that option was specified. |
| 166 | * TEST_PAUSE contains the code to fork the test with the -i option. |
| 167 | * You want to make sure you do this before you create your temporary |
| 168 | * directory. |
| 169 | */ |
| 170 | TEST_PAUSE; |
| 171 | |
| 172 | /* Create a unique temporary directory and chdir() to it. */ |
| 173 | tst_tmpdir(); |
| 174 | |
| 175 | strcpy(name, DATA_FILE); |
| 176 | sprintf(f_name, "%s.%d", name, getpid()); |
| 177 | |
| 178 | page_size = getpagesize(); |
| 179 | |
| 180 | /* Crate two readable and writeble mappings with non reabable |
| 181 | * mapping around */ |
| 182 | bad_addr[0] = mmap(NULL, page_size * 3, PROT_NONE, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 183 | MAP_PRIVATE_EXCEPT_UCLINUX | MAP_ANONYMOUS, 0, 0); |
subrata_modak | 76e1c91 | 2009-03-18 08:31:06 +0000 | [diff] [blame] | 184 | if (bad_addr[0] == MAP_FAILED) |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 185 | tst_brkm(TBROK, cleanup, "mmap failed for bad_addr[0]"); |
subrata_modak | 76e1c91 | 2009-03-18 08:31:06 +0000 | [diff] [blame] | 186 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 187 | good_addr[0] = mmap(NULL, page_size, PROT_READ | PROT_WRITE, |
| 188 | MAP_PRIVATE_EXCEPT_UCLINUX | MAP_ANONYMOUS, 0, 0); |
subrata_modak | 76e1c91 | 2009-03-18 08:31:06 +0000 | [diff] [blame] | 189 | if (good_addr[0] == MAP_FAILED) |
| 190 | tst_brkm(TBROK, cleanup, "mmap failed for good_addr[0]"); |
| 191 | |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 192 | bad_addr[1] = mmap(NULL, page_size * 3, PROT_NONE, |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 193 | MAP_PRIVATE_EXCEPT_UCLINUX | MAP_ANONYMOUS, 0, 0); |
subrata_modak | 76e1c91 | 2009-03-18 08:31:06 +0000 | [diff] [blame] | 194 | if (bad_addr[1] == MAP_FAILED) |
| 195 | tst_brkm(TBROK, cleanup, "mmap failed for bad_addr[1]"); |
| 196 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 197 | good_addr[1] = mmap(NULL, page_size, PROT_READ | PROT_WRITE, |
| 198 | MAP_PRIVATE_EXCEPT_UCLINUX | MAP_ANONYMOUS, 0, 0); |
subrata_modak | 76e1c91 | 2009-03-18 08:31:06 +0000 | [diff] [blame] | 199 | if (good_addr[1] == MAP_FAILED) |
| 200 | tst_brkm(TBROK, cleanup, "mmap failed for good_addr[1]"); |
| 201 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 202 | /* force page fault for writable mappings */ |
| 203 | memset(good_addr[0], 'a', page_size); |
| 204 | memset(good_addr[1], 'b', page_size); |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 205 | |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 206 | wr_iovec[0].iov_base = good_addr[0] + page_size - 1; |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 207 | wr_iovec[1].iov_base = good_addr[1] + page_size - 1; |
| 208 | |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 209 | } |
| 210 | |
| 211 | /* |
| 212 | * cleanup() |
| 213 | * performs all ONE TIME cleanup for this test at |
| 214 | * completion or premature exit |
| 215 | */ |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 216 | void cleanup(void) |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 217 | { |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 218 | |
subrata_modak | 3fddbf6 | 2007-11-14 15:27:56 +0000 | [diff] [blame] | 219 | close(fd[0]); |
| 220 | |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 221 | if (unlink(f_name) < 0) { |
| 222 | tst_resm(TFAIL, "unlink Failed--file = %s, errno = %d", |
| 223 | f_name, errno); |
| 224 | } |
| 225 | tst_rmdir(); |
| 226 | |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 227 | } |
| 228 | |
| 229 | /* |
| 230 | * sighandler() |
| 231 | * Signal handler for SIGTERM and SIGPIPE |
| 232 | */ |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 233 | void sighandler(int sig) |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 234 | { |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 235 | switch (sig) { |
| 236 | case SIGTERM: |
| 237 | break; |
| 238 | case SIGPIPE: |
| 239 | ++in_sighandler; |
| 240 | return; |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 241 | default: |
subrata_modak | 56207ce | 2009-03-23 13:35:39 +0000 | [diff] [blame] | 242 | tst_resm(TFAIL, "sighandler() received invalid signal " |
| 243 | ": %d", sig); |
| 244 | break; |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 245 | } |
| 246 | |
| 247 | if ((unlink(f_name) < 0) && (errno != ENOENT)) { |
| 248 | tst_resm(TFAIL, "unlink Failed--file = %s, errno = %d", |
| 249 | f_name, errno); |
| 250 | cleanup(); |
Garrett Cooper | 2c28215 | 2010-12-16 00:55:50 -0800 | [diff] [blame] | 251 | |
subrata_modak | 5d8581f | 2007-06-20 10:59:49 +0000 | [diff] [blame] | 252 | } |
| 253 | exit(sig); |
Chris Dearman | ec6edca | 2012-10-17 19:54:01 -0700 | [diff] [blame] | 254 | } |