Han Pingtian | a064520 | 2014-07-14 08:58:48 +0200 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Copyright (c) International Business Machines Corp., 2014 |
| 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. |
| 18 | */ |
| 19 | /* |
| 20 | * NAME |
| 21 | * sendfile09.c |
| 22 | * |
| 23 | * DESCRIPTION |
| 24 | * Testcase copied from sendfile02.c to test the basic functionality of |
| 25 | * the sendfile(2) system call on large file. There is a kernel bug which |
| 26 | * introduced by commit 8f9c0119d7ba and fixed by commit 5d73320a96fcc. |
| 27 | * |
| 28 | * ALGORITHM |
| 29 | * 1. call sendfile(2) with offset at 0 |
| 30 | * 2. call sendfile(2) with offset at 3GB |
| 31 | * |
| 32 | * USAGE: <for command-line> |
| 33 | * sendfile09 [-c n] [-i n] [-I x] [-P x] [-t] |
| 34 | * where, |
| 35 | * -i n : Execute test n times. |
| 36 | * -I x : Execute test for x seconds. |
| 37 | * -P x : Pause for x seconds between iterations. |
| 38 | * -t : Turn on syscall timing. |
| 39 | * |
| 40 | * |
| 41 | * RESTRICTIONS |
| 42 | * Only supports 64bit systems and kernel 2.6.33 or above |
| 43 | */ |
| 44 | #include <stdio.h> |
| 45 | #include <errno.h> |
| 46 | #include <fcntl.h> |
| 47 | #include <sys/stat.h> |
| 48 | #include <sys/sendfile.h> |
| 49 | #include <sys/types.h> |
| 50 | #include <unistd.h> |
| 51 | #include <inttypes.h> |
Han Pingtian | a064520 | 2014-07-14 08:58:48 +0200 | [diff] [blame] | 52 | #include "test.h" |
| 53 | #include "safe_macros.h" |
| 54 | |
| 55 | #ifndef OFF_T |
| 56 | #define OFF_T off_t |
| 57 | #endif /* Not def: OFF_T */ |
| 58 | |
| 59 | TCID_DEFINE(sendfile09); |
| 60 | |
| 61 | static char *in_file = "in"; |
| 62 | static char *out_file = "out"; |
| 63 | static int fd; |
| 64 | static int in_fd; |
| 65 | static int out_fd; |
| 66 | |
| 67 | static void cleanup(void); |
| 68 | static void setup(void); |
| 69 | |
| 70 | #define ONE_GB (INT64_C(1) << 30) |
| 71 | |
| 72 | static struct test_case_t { |
| 73 | char *desc; |
| 74 | OFF_T offset; |
| 75 | int64_t count; |
| 76 | int64_t exp_retval; |
| 77 | int64_t exp_updated_offset; |
| 78 | } testcases[] = { |
| 79 | { "Test sendfile(2) with offset at 0", |
| 80 | 0, ONE_GB, ONE_GB, ONE_GB}, |
| 81 | { "Test sendfile(2) with offset at 3GB", |
| 82 | 3*ONE_GB, ONE_GB, ONE_GB, 4*ONE_GB} |
| 83 | }; |
| 84 | |
| 85 | static int TST_TOTAL = ARRAY_SIZE(testcases); |
| 86 | |
| 87 | void do_sendfile(struct test_case_t *t) |
| 88 | { |
| 89 | off_t before_pos, after_pos; |
| 90 | |
| 91 | out_fd = SAFE_OPEN(cleanup, out_file, O_WRONLY); |
| 92 | in_fd = SAFE_OPEN(cleanup, in_file, O_RDONLY); |
| 93 | before_pos = SAFE_LSEEK(cleanup, in_fd, 0, SEEK_CUR); |
| 94 | |
| 95 | TEST(sendfile(out_fd, in_fd, &t->offset, t->count)); |
| 96 | if (TEST_RETURN == -1) |
| 97 | tst_brkm(TBROK | TTERRNO, cleanup, "sendfile(2) failed"); |
| 98 | |
| 99 | after_pos = SAFE_LSEEK(cleanup, in_fd, 0, SEEK_CUR); |
| 100 | |
| 101 | if (TEST_RETURN != t->exp_retval) { |
| 102 | tst_resm(TFAIL, "sendfile(2) failed to return " |
| 103 | "expected value, expected: %" PRId64 ", " |
| 104 | "got: %ld", t->exp_retval, |
| 105 | TEST_RETURN); |
| 106 | } else if (t->offset != t->exp_updated_offset) { |
| 107 | tst_resm(TFAIL, "sendfile(2) failed to update " |
| 108 | "OFFSET parameter to expected value, " |
| 109 | "expected: %" PRId64 ", got: %" PRId64, |
| 110 | t->exp_updated_offset, |
| 111 | (int64_t) t->offset); |
| 112 | } else if (before_pos != after_pos) { |
| 113 | tst_resm(TFAIL, "sendfile(2) updated the file position " |
| 114 | " of in_fd unexpectedly, expected file position: %" |
| 115 | PRId64 ", " " actual file position %" PRId64, |
| 116 | (int64_t) before_pos, (int64_t) after_pos); |
| 117 | } else { |
| 118 | tst_resm(TPASS, "%s", t->desc); |
| 119 | } |
| 120 | |
| 121 | close(in_fd); |
| 122 | close(out_fd); |
| 123 | } |
| 124 | |
| 125 | /* |
| 126 | * setup() - performs all ONE TIME setup for this test. |
| 127 | */ |
| 128 | void setup(void) |
| 129 | { |
| 130 | int i; |
| 131 | |
| 132 | tst_sig(FORK, DEF_HANDLER, cleanup); |
| 133 | TEST_PAUSE; |
| 134 | |
| 135 | /* make a temporary directory and cd to it */ |
| 136 | tst_tmpdir(); |
| 137 | |
| 138 | if (!tst_fs_has_free(NULL, ".", 5, TST_GB)) |
| 139 | tst_brkm(TCONF, cleanup, "sendfile(2) on large file" |
| 140 | " needs 5G free space."); |
| 141 | |
| 142 | /* create a 4G file */ |
| 143 | fd = SAFE_CREAT(cleanup, in_file, 00700); |
| 144 | for (i = 1; i <= (4 * 1024); i++) { |
| 145 | SAFE_LSEEK(cleanup, fd, 1024 * 1024 - 1, SEEK_CUR); |
| 146 | SAFE_WRITE(cleanup, 1, fd, "C", 1); |
| 147 | } |
| 148 | close(fd); |
| 149 | |
| 150 | fd = SAFE_CREAT(cleanup, out_file, 00700); |
| 151 | close(fd); |
| 152 | } |
| 153 | |
| 154 | void cleanup(void) |
| 155 | { |
Han Pingtian | a064520 | 2014-07-14 08:58:48 +0200 | [diff] [blame] | 156 | if (fd > 0) |
| 157 | close(fd); |
| 158 | |
| 159 | if (in_fd > 0) |
| 160 | close(in_fd); |
| 161 | |
| 162 | if (out_fd > 0) |
| 163 | close(out_fd); |
| 164 | |
| 165 | tst_rmdir(); |
| 166 | } |
| 167 | |
| 168 | int main(int ac, char **av) |
| 169 | { |
| 170 | int i; |
| 171 | int lc; |
| 172 | const char *msg; |
| 173 | |
| 174 | #if __WORDSIZE == 32 |
| 175 | tst_brkm(TCONF, NULL, "This test is only for 64bit"); |
| 176 | #endif |
| 177 | |
| 178 | if (tst_kvercmp(2, 6, 33) < 0) { |
| 179 | tst_resm(TINFO, "sendfile(2) on large file " |
| 180 | "skipped for kernels < 2.6.33"); |
| 181 | return 0; |
| 182 | } |
| 183 | |
| 184 | if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) |
| 185 | tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| 186 | |
| 187 | setup(); |
| 188 | |
| 189 | /* |
| 190 | * The following loop checks looping state if -c option given |
| 191 | */ |
| 192 | for (lc = 0; TEST_LOOPING(lc); lc++) { |
| 193 | tst_count = 0; |
| 194 | for (i = 0; i < TST_TOTAL; ++i) |
| 195 | do_sendfile(&testcases[i]); |
| 196 | } |
| 197 | |
| 198 | cleanup(); |
| 199 | tst_exit(); |
| 200 | } |