| /* |
| * |
| * Copyright (c) International Business Machines Corp., 2014 |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See |
| * the GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc. |
| */ |
| /* |
| * NAME |
| * sendfile09.c |
| * |
| * DESCRIPTION |
| * Testcase copied from sendfile02.c to test the basic functionality of |
| * the sendfile(2) system call on large file. There is a kernel bug which |
| * introduced by commit 8f9c0119d7ba and fixed by commit 5d73320a96fcc. |
| * |
| * ALGORITHM |
| * 1. call sendfile(2) with offset at 0 |
| * 2. call sendfile(2) with offset at 3GB |
| * |
| * USAGE: <for command-line> |
| * sendfile09 [-c n] [-i n] [-I x] [-P x] [-t] |
| * where, |
| * -i n : Execute test n times. |
| * -I x : Execute test for x seconds. |
| * -P x : Pause for x seconds between iterations. |
| * -t : Turn on syscall timing. |
| * |
| * |
| * RESTRICTIONS |
| * Only supports 64bit systems and kernel 2.6.33 or above |
| */ |
| #include <stdio.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <sys/stat.h> |
| #include <sys/sendfile.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| #include <inttypes.h> |
| #include "test.h" |
| #include "safe_macros.h" |
| |
| #ifndef OFF_T |
| #define OFF_T off_t |
| #endif /* Not def: OFF_T */ |
| |
| TCID_DEFINE(sendfile09); |
| |
| static char *in_file = "in"; |
| static char *out_file = "out"; |
| static int fd; |
| static int in_fd; |
| static int out_fd; |
| |
| static void cleanup(void); |
| static void setup(void); |
| |
| #define ONE_GB (INT64_C(1) << 30) |
| |
| static struct test_case_t { |
| char *desc; |
| OFF_T offset; |
| int64_t count; |
| int64_t exp_retval; |
| int64_t exp_updated_offset; |
| } testcases[] = { |
| { "Test sendfile(2) with offset at 0", |
| 0, ONE_GB, ONE_GB, ONE_GB}, |
| { "Test sendfile(2) with offset at 3GB", |
| 3*ONE_GB, ONE_GB, ONE_GB, 4*ONE_GB} |
| }; |
| |
| static int TST_TOTAL = ARRAY_SIZE(testcases); |
| |
| void do_sendfile(struct test_case_t *t) |
| { |
| off_t before_pos, after_pos; |
| |
| out_fd = SAFE_OPEN(cleanup, out_file, O_WRONLY); |
| in_fd = SAFE_OPEN(cleanup, in_file, O_RDONLY); |
| before_pos = SAFE_LSEEK(cleanup, in_fd, 0, SEEK_CUR); |
| |
| TEST(sendfile(out_fd, in_fd, &t->offset, t->count)); |
| if (TEST_RETURN == -1) |
| tst_brkm(TBROK | TTERRNO, cleanup, "sendfile(2) failed"); |
| |
| after_pos = SAFE_LSEEK(cleanup, in_fd, 0, SEEK_CUR); |
| |
| if (TEST_RETURN != t->exp_retval) { |
| tst_resm(TFAIL, "sendfile(2) failed to return " |
| "expected value, expected: %" PRId64 ", " |
| "got: %ld", t->exp_retval, |
| TEST_RETURN); |
| } else if (t->offset != t->exp_updated_offset) { |
| tst_resm(TFAIL, "sendfile(2) failed to update " |
| "OFFSET parameter to expected value, " |
| "expected: %" PRId64 ", got: %" PRId64, |
| t->exp_updated_offset, |
| (int64_t) t->offset); |
| } else if (before_pos != after_pos) { |
| tst_resm(TFAIL, "sendfile(2) updated the file position " |
| " of in_fd unexpectedly, expected file position: %" |
| PRId64 ", " " actual file position %" PRId64, |
| (int64_t) before_pos, (int64_t) after_pos); |
| } else { |
| tst_resm(TPASS, "%s", t->desc); |
| } |
| |
| close(in_fd); |
| close(out_fd); |
| } |
| |
| /* |
| * setup() - performs all ONE TIME setup for this test. |
| */ |
| void setup(void) |
| { |
| int i; |
| |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| TEST_PAUSE; |
| |
| /* make a temporary directory and cd to it */ |
| tst_tmpdir(); |
| |
| if (!tst_fs_has_free(NULL, ".", 5, TST_GB)) |
| tst_brkm(TCONF, cleanup, "sendfile(2) on large file" |
| " needs 5G free space."); |
| |
| /* create a 4G file */ |
| fd = SAFE_CREAT(cleanup, in_file, 00700); |
| for (i = 1; i <= (4 * 1024); i++) { |
| SAFE_LSEEK(cleanup, fd, 1024 * 1024 - 1, SEEK_CUR); |
| SAFE_WRITE(cleanup, 1, fd, "C", 1); |
| } |
| close(fd); |
| |
| fd = SAFE_CREAT(cleanup, out_file, 00700); |
| close(fd); |
| } |
| |
| void cleanup(void) |
| { |
| if (fd > 0) |
| close(fd); |
| |
| if (in_fd > 0) |
| close(in_fd); |
| |
| if (out_fd > 0) |
| close(out_fd); |
| |
| tst_rmdir(); |
| } |
| |
| int main(int ac, char **av) |
| { |
| int i; |
| int lc; |
| const char *msg; |
| |
| #if __WORDSIZE == 32 |
| tst_brkm(TCONF, NULL, "This test is only for 64bit"); |
| #endif |
| |
| if (tst_kvercmp(2, 6, 33) < 0) { |
| tst_resm(TINFO, "sendfile(2) on large file " |
| "skipped for kernels < 2.6.33"); |
| return 0; |
| } |
| |
| if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| setup(); |
| |
| /* |
| * The following loop checks looping state if -c option given |
| */ |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| tst_count = 0; |
| for (i = 0; i < TST_TOTAL; ++i) |
| do_sendfile(&testcases[i]); |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |