| /* |
| * |
| * Copyright (c) International Business Machines Corp., 2001 |
| * Copyright (c) Red Hat Inc., 2007 |
| * |
| * 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 |
| */ |
| |
| /* |
| * NAME |
| * sendfile07.c |
| * |
| * DESCRIPTION |
| * Testcase to test that sendfile(2) system call returns EAGAIN |
| * when passing blocked out_fd. Here out_fd is opend with O_NONBLOCK. |
| * |
| * ALGORITHM |
| * 1. Make sockets with socketpair(&p). Use p[1] as out_fd. |
| * 2. Set O_NONBLOCK flag of out_fd on. |
| * 3. Write much datum to out_fd till write() returns EAGAIN. |
| * 4. Call sendfile with out_fd, and expect EAGAIN. |
| * |
| * USAGE: <for command-line> |
| * sendfile07 [-c n] [-e] [-i n] [-I x] [-P x] [-t] |
| * where, -c n : Run n copies concurrently. |
| * -e : Turn on errno logging. |
| * -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. |
| * |
| * HISTORY |
| * 12/2007 Copyed from sendfile03.c by Masatake YAMATO |
| * |
| * RESTRICTIONS |
| * NONE |
| */ |
| |
| #include <stdio.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <sys/sendfile.h> |
| #include <sys/socket.h> |
| |
| #include "usctest.h" |
| #include "test.h" |
| |
| #ifndef OFF_T |
| #define OFF_T off_t |
| #endif /* Not def: OFF_T */ |
| |
| TCID_DEFINE(sendfile07); |
| int TST_TOTAL = 1; |
| |
| int in_fd, out_fd = 0, ignored_fd = 0; |
| char in_file[100]; |
| |
| /* To make out_fd overflow, write much chars |
| to out_fd. MAX_FILL_DATA_LENGTH defines the `much'. */ |
| #define MAX_FILL_DATA_LENGTH 0xFFFFFFF |
| |
| void cleanup(void); |
| void setup(void); |
| |
| int main(int ac, char **av) |
| { |
| int lc; |
| char *msg; /* parse_opts() return message */ |
| |
| 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; |
| |
| TEST(sendfile(out_fd, in_fd, NULL, 1)); |
| |
| if (TEST_RETURN != -1) { |
| tst_resm(TFAIL, "call succeeded unexpectedly"); |
| continue; |
| } |
| |
| TEST_ERROR_LOG(TEST_ERRNO); |
| |
| if (TEST_ERRNO != EAGAIN) { |
| tst_resm(TFAIL, "sendfile returned unexpected " |
| "errno, expected: %d, got: %d", |
| EAGAIN, TEST_ERRNO); |
| } else { |
| tst_resm(TPASS, "sendfile() returned %d : %s", |
| TEST_ERRNO, strerror(TEST_ERRNO)); |
| } |
| } |
| |
| cleanup(); |
| tst_exit(); |
| tst_exit(); |
| |
| } |
| |
| /* |
| * setup() - performs all ONE TIME setup for this test. |
| */ |
| void setup() |
| { |
| char buf[100]; |
| int p[2]; |
| int i, r; |
| |
| tst_sig(NOFORK, DEF_HANDLER, cleanup); |
| |
| TEST_PAUSE; |
| |
| /* make a temporary directory and cd to it */ |
| tst_tmpdir(); |
| |
| sprintf(in_file, "in.%d", getpid()); |
| if ((in_fd = creat(in_file, 00700)) < 0) { |
| tst_brkm(TBROK, cleanup, "creat failed in setup, errno: %d", |
| errno); |
| } |
| sprintf(buf, "abcdefghijklmnopqrstuvwxyz"); |
| if (write(in_fd, buf, strlen(buf)) < 0) { |
| tst_brkm(TBROK, cleanup, "write failed, errno: %d", errno); |
| } |
| close(in_fd); |
| if ((in_fd = open(in_file, O_RDONLY)) < 0) { |
| tst_brkm(TBROK, cleanup, "open failed, errno: %d", errno); |
| } |
| |
| /* Make fulfilled out_fd. */ |
| if (socketpair(PF_UNIX, SOCK_DGRAM, 0, p) < 0) { |
| tst_brkm(TBROK, cleanup, "socketpair failed, errno: %d", errno); |
| } |
| |
| /* Don't close. |
| You cannot write nothing on out_fd if ignored_fd is closed. */ |
| ignored_fd = p[0]; |
| out_fd = p[1]; |
| if (fcntl(out_fd, F_SETFL, O_WRONLY | O_NONBLOCK) < 0) { |
| tst_brkm(TBROK, cleanup, "fcntl failed, errno: %d", errno); |
| } |
| |
| i = MAX_FILL_DATA_LENGTH; |
| while (i > 0) { |
| r = write(out_fd, buf, 1); |
| if (r < 0) { |
| if (errno == EAGAIN) { |
| break; |
| } else { |
| tst_brkm(TBROK, cleanup, |
| "write failed to fill out_fd, errno: %d", |
| errno); |
| } |
| } |
| i--; |
| } |
| if (i == 0) { |
| tst_brkm(TBROK, cleanup, |
| "fail to fill out_fd, write %d bytes but EAGAIN it not returned.", |
| MAX_FILL_DATA_LENGTH); |
| } |
| } |
| |
| /* |
| * cleanup() - performs all ONE TIME cleanup for this test at |
| * completion or premature exit. |
| */ |
| void cleanup() |
| { |
| /* |
| * print timing stats if that option was specified. |
| * print errno log if that option was specified. |
| */ |
| if (out_fd) |
| close(out_fd); |
| if (ignored_fd) |
| close(ignored_fd); |
| close(in_fd); |
| |
| TEST_CLEANUP; |
| |
| /* delete the test directory created in setup() */ |
| tst_rmdir(); |
| |
| } |