| /* |
| * |
| * Copyright (c) International Business Machines Corp., 2001 |
| * |
| * 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 |
| * dup203.c |
| * |
| * DESCRIPTION |
| * Testcase to check the basic functionality of dup2(). |
| * |
| * ALGORITHM |
| * 1. Attempt to dup2() on an open file descriptor. |
| * 2. Attempt to dup2() on a close file descriptor. |
| * |
| * USAGE: <for command-line> |
| * dup203 [-c n] [-f] [-i n] [-I x] [-P x] [-t] |
| * where, -c n : Run n copies concurrently. |
| * -f : Turn off functionality Testing. |
| * -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 |
| * 07/2001 Ported by Wayne Boyer |
| * |
| * RESTRICTIONS |
| * NONE |
| */ |
| |
| #include <fcntl.h> |
| #include <sys/param.h> |
| #include <errno.h> |
| #include <string.h> |
| #include "test.h" |
| |
| void setup(void); |
| void cleanup(void); |
| |
| char *TCID = "dup203"; |
| int TST_TOTAL = 1; |
| |
| int main(int ac, char **av) |
| { |
| int fd0, fd1, fd2, rval; |
| char filename0[40], filename1[40]; |
| char buf[40]; |
| |
| int lc; |
| const char *msg; |
| |
| if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| setup(); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| |
| tst_count = 0; |
| //block1: |
| tst_resm(TINFO, "Enter block 1"); |
| tst_resm(TINFO, "Test duping over an open fd"); |
| |
| sprintf(filename0, "dup202.file0.%d\n", getpid()); |
| sprintf(filename1, "dup202.file1.%d\n", getpid()); |
| unlink(filename0); |
| unlink(filename1); |
| |
| if ((fd0 = creat(filename0, 0666)) == -1) |
| tst_brkm(TBROK, cleanup, "cannot create first file"); |
| if (write(fd0, filename0, strlen(filename0)) == -1) |
| tst_brkm(TBROK, cleanup, "filename0: write(2) failed"); |
| |
| if ((fd1 = creat(filename1, 0666)) == -1) |
| tst_brkm(TBROK, cleanup, "Cannot create second file"); |
| if (write(fd1, filename1, strlen(filename1)) == -1) |
| tst_brkm(TBROK, cleanup, "filename1: write(2) failed"); |
| |
| if (close(fd0) == -1) |
| tst_brkm(TBROK, cleanup, "close(2) fd0 failed"); |
| if ((fd0 = open(filename0, O_RDONLY)) == -1) |
| tst_brkm(TBROK, cleanup, "open(2) on filename0 failed"); |
| |
| if (close(fd1) == -1) |
| tst_brkm(TBROK, cleanup, "close(2) fd1 failed"); |
| if ((fd1 = open(filename1, O_RDONLY)) == -1) |
| tst_brkm(TBROK, cleanup, "open(2) on filename1 failed"); |
| |
| TEST(dup2(fd0, fd1)); |
| |
| if ((fd2 = TEST_RETURN) == -1) { |
| tst_resm(TFAIL, "call failed unexpectedly"); |
| } else { |
| if (fd1 != fd2) { |
| tst_resm(TFAIL, "file descriptors don't match"); |
| break; |
| } |
| |
| memset(buf, 0, sizeof(buf)); |
| if (read(fd2, buf, sizeof(buf)) == -1) |
| tst_brkm(TBROK, cleanup, "read(2) failed"); |
| if (strcmp(buf, filename0) != 0) |
| tst_resm(TFAIL, "read from file got bad data"); |
| tst_resm(TPASS, "dup2 test 1 functionality is correct"); |
| } |
| |
| close(fd0); |
| close(fd1); |
| close(fd2); |
| unlink(filename0); |
| unlink(filename1); |
| |
| tst_resm(TINFO, "Exit block 1"); |
| |
| //block2: |
| tst_resm(TINFO, "Enter block 2"); |
| tst_resm(TINFO, "Test close on exec flag"); |
| |
| sprintf(filename0, "dup02.%d\n", getpid()); |
| unlink(filename0); |
| |
| if ((fd0 = creat(filename0, 0666)) == -1) { |
| tst_brkm(TBROK, cleanup, "Cannot create first file"); |
| } |
| if (fcntl(fd0, F_SETFD, 1) == -1) { |
| tst_brkm(TBROK, cleanup, "setting close on exec flag " |
| "on fd0 failed"); |
| } |
| |
| if ((fd2 = creat(filename1, 0666)) == -1) { |
| tst_brkm(TBROK, cleanup, "Cannot create second file"); |
| } |
| |
| if (close(fd2) == -1) { |
| tst_brkm(TBROK, cleanup, "close(2) fd_closed failed"); |
| } |
| |
| TEST(dup2(fd0, fd2)); |
| |
| if ((fd1 = TEST_RETURN) == -1) { |
| tst_resm(TFAIL, "call failed unexpectedly"); |
| } else { |
| if (fd1 != fd2) { |
| tst_resm(TFAIL, "bad dup2 descriptor %d", fd1); |
| break; |
| } |
| |
| if ((rval = fcntl(fd1, F_GETFD, 0)) != 0) { |
| tst_resm(TBROK | TERRNO, |
| "fcntl F_GETFD on fd1 failed; expected a " |
| "return value of 0x0, got %#x", rval); |
| break; |
| } |
| if ((rval = (fcntl(fd0, F_GETFL, 0) & O_ACCMODE)) != |
| O_WRONLY) { |
| tst_resm(TFAIL, "fctnl F_GETFL bad rval on fd0 " |
| "Expected %#x got %#x", O_WRONLY, |
| rval); |
| } |
| tst_resm(TPASS, "dup2 test 2 functionality is correct"); |
| } |
| |
| close(fd0); |
| close(fd1); |
| |
| unlink(filename0); |
| unlink(filename1); |
| tst_resm(TINFO, "Exit block 2"); |
| } |
| |
| cleanup(); |
| tst_exit(); |
| } |
| |
| /* |
| * setup() - performs all ONE TIME setup for this test. |
| */ |
| void setup(void) |
| { |
| |
| tst_sig(NOFORK, DEF_HANDLER, cleanup); |
| |
| TEST_PAUSE; |
| |
| tst_tmpdir(); |
| } |
| |
| /* |
| * cleanup() - performs all ONE TIME cleanup for this test at |
| * completion or premature exit. |
| */ |
| void cleanup(void) |
| { |
| tst_rmdir(); |
| } |