| /* |
| * Copyright (C) 2012 Red Hat, Inc. |
| * |
| * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /* |
| * Bug in the splice code has caused the file position on the write side |
| * of the sendfile system call to be incorrectly set to the read side file |
| * position. This can result in the data being written to an incorrect offset. |
| * |
| * This is a regression test for kernel commit |
| * 2cb4b05e7647891b46b91c07c9a60304803d1688 |
| */ |
| |
| #include <sys/sendfile.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <unistd.h> |
| |
| #include "usctest.h" |
| #include "test.h" |
| |
| #define TEST_MSG_IN "world" |
| #define TEST_MSG_OUT "hello" |
| #define TEST_MSG_ALL (TEST_MSG_OUT TEST_MSG_IN) |
| |
| TCID_DEFINE(sendfile08); |
| int TST_TOTAL = 1; |
| |
| static int in_fd; |
| static int out_fd; |
| static char *in_file = "sendfile08.in"; |
| static char *out_file = "sendfile08.out"; |
| |
| static void cleanup(void); |
| static void setup(void); |
| |
| int main(int argc, char *argv[]) |
| { |
| int lc; |
| int ret; |
| const char *msg; |
| char buf[BUFSIZ]; |
| |
| msg = parse_opts(argc, argv, NULL, NULL); |
| if (msg != NULL) |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| setup(); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| TEST(sendfile(out_fd, in_fd, NULL, strlen(TEST_MSG_IN))); |
| |
| if (TEST_RETURN == -1) |
| tst_brkm(TBROK | TTERRNO, cleanup, "sendfile() failed"); |
| |
| ret = lseek(out_fd, 0, SEEK_SET); |
| if (ret == -1) |
| tst_brkm(TBROK | TERRNO, cleanup, "lseek %s failed", |
| out_file); |
| ret = read(out_fd, buf, BUFSIZ); |
| if (ret == -1) |
| tst_brkm(TBROK | TERRNO, cleanup, "read %s failed", |
| out_file); |
| |
| if (!strncmp(buf, TEST_MSG_ALL, strlen(TEST_MSG_ALL))) |
| tst_resm(TPASS, "sendfile(2) copies data correctly"); |
| else |
| tst_resm(TFAIL, "sendfile(2) copies data incorrectly." |
| " Expect \"%s%s\", got \"%s\"", TEST_MSG_OUT, |
| TEST_MSG_IN, buf); |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| static void setup(void) |
| { |
| int ret; |
| |
| /* Disable test if the version of the kernel is less than 2.6.33 */ |
| if ((tst_kvercmp(2, 6, 33)) < 0) { |
| tst_resm(TCONF, "The out_fd must be socket before kernel"); |
| tst_resm(TCONF, "2.6.33, see kernel commit cc56f7d"); |
| tst_exit(); |
| } |
| |
| TEST_PAUSE; |
| |
| tst_tmpdir(); |
| |
| in_fd = creat(in_file, 0700); |
| if (in_fd == -1) |
| tst_brkm(TBROK | TERRNO, cleanup, "Create %s failed", in_file); |
| |
| ret = write(in_fd, TEST_MSG_IN, strlen(TEST_MSG_IN)); |
| if (ret == -1) |
| tst_brkm(TBROK | TERRNO, cleanup, "Write %s failed", in_file); |
| close(in_fd); |
| |
| in_fd = open(in_file, O_RDONLY); |
| if (in_fd == -1) |
| tst_brkm(TBROK | TERRNO, cleanup, "Open %s failed", in_file); |
| |
| out_fd = open(out_file, O_TRUNC | O_CREAT | O_RDWR, 0777); |
| if (out_fd == -1) |
| tst_brkm(TBROK | TERRNO, cleanup, "Open %s failed", out_file); |
| ret = write(out_fd, TEST_MSG_OUT, strlen(TEST_MSG_OUT)); |
| if (ret == -1) |
| tst_brkm(TBROK | TERRNO, cleanup, "Write %s failed", out_file); |
| } |
| |
| static void cleanup(void) |
| { |
| close(out_fd); |
| close(in_fd); |
| |
| TEST_CLEANUP; |
| |
| tst_rmdir(); |
| } |