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> 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 { 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; 172 173 #if __WORDSIZE == 32 174 tst_brkm(TCONF, NULL, "This test is only for 64bit"); 175 #endif 176 177 if (tst_kvercmp(2, 6, 33) < 0) { 178 tst_resm(TINFO, "sendfile(2) on large file " 179 "skipped for kernels < 2.6.33"); 180 return 0; 181 } 182 183 tst_parse_opts(ac, av, NULL, NULL); 184 185 setup(); 186 187 /* 188 * The following loop checks looping state if -c option given 189 */ 190 for (lc = 0; TEST_LOOPING(lc); lc++) { 191 tst_count = 0; 192 for (i = 0; i < TST_TOTAL; ++i) 193 do_sendfile(&testcases[i]); 194 } 195 196 cleanup(); 197 tst_exit(); 198 } 199
