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Diffstat (limited to 'winsup/testsuite/winsup.api/ltp/mmap07.c')
| -rw-r--r-- | winsup/testsuite/winsup.api/ltp/mmap07.c | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/winsup/testsuite/winsup.api/ltp/mmap07.c b/winsup/testsuite/winsup.api/ltp/mmap07.c new file mode 100644 index 000000000..3d1f4341d --- /dev/null +++ b/winsup/testsuite/winsup.api/ltp/mmap07.c @@ -0,0 +1,236 @@ +/* + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +/* + * Test Name: mmap07 + * + * Test Description: + * Call mmap() to map a file creating a mapped region with read access + * under the following conditions - + * - The prot parameter is set to PROT_WRITE + * - The file descriptor is open for writing. + * - The flags parameter has MAP_PRIVATE set. + * + * The call should fail to map the file. + * + * Expected Result: + * mmap() should fail returning -1 and errno should get set to EACCES. + * + * Algorithm: + * Setup: + * Setup signal handling. + * Pause for SIGUSR1 if option specified. + * Create temporary directory. + * + * Test: + * Loop if the proper options are given. + * Execute system call + * Check return code, if system call failed (return=-1) + * if errno set == expected errno + * Issue sys call fails with expected return value and errno. + * Otherwise, + * Issue sys call fails with unexpected errno. + * Otherwise, + * Issue sys call returns unexpected value. + * + * Cleanup: + * Print errno log and/or timing stats if options given + * Delete the temporary directory(s)/file(s) created. + * + * Usage: <for command-line> + * mmap07 [-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 + * 07/2001 Ported by Wayne Boyer + * + * RESTRICTIONS: + * None. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <sys/types.h> +#include <errno.h> +#include <unistd.h> +#include <fcntl.h> +#include <string.h> +#include <signal.h> +#include <sys/stat.h> +#include <sys/mman.h> + +#include "test.h" +#include "usctest.h" + +#define TEMPFILE "mmapfile" + +char *TCID="mmap07"; /* Test program identifier. */ +int TST_TOTAL=1; /* Total number of test cases. */ +extern int Tst_count; /* Test Case counter for tst_* routines */ +int exp_enos[]={EACCES, 0}; + +size_t page_sz; /* system page size */ +char *addr; /* addr of memory mapped region */ +int fildes = -1; /* file descriptor for temporary file */ + +void setup(); /* Main setup function of test */ +void cleanup(); /* cleanup function for the test */ + +int +main(int ac, char **av) +{ + int lc; /* loop counter */ + const char *msg; /* message returned from parse_opts */ + + /* Parse standard options given to run the test. */ + msg = parse_opts(ac, av, (option_t *) NULL, NULL); + if (msg != (char *) NULL) { + tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); + tst_exit(); + } + + /* Perform global setup for test */ + setup(); + + /* set the expected errnos... */ + TEST_EXP_ENOS(exp_enos); + + /* Check looping state if -i option given */ + for (lc = 0; TEST_LOOPING(lc); lc++) { + /* Reset Tst_count in case we are looping. */ + Tst_count=0; + + /* + * Call mmap to map the temporary file 'TEMPFILE' + * with write access. + */ + TEST(mmap(0, page_sz, PROT_WRITE, + MAP_FILE|MAP_PRIVATE, fildes, 0)); + + /* Check for the return value of mmap() */ + if (TEST_RETURN != (int)MAP_FAILED) { + tst_resm(TFAIL, "mmap() returned invalid value, " + "expected: -1"); + /* Unmap the mapped memory */ + if (munmap(addr, page_sz) != 0) { + tst_brkm(TBROK, cleanup, "munmap() failed"); + } + continue; + } + TEST_ERROR_LOG(TEST_ERRNO); + if (TEST_ERRNO == EACCES) { + tst_resm(TPASS, "mmap() fails, 'fd' doesn't allow " + "desired access, errno:%d", errno); + } else { + tst_resm(TFAIL, "mmap() fails, 'fd' doesn't allow " + "desired access, invalid errno:%d", errno); + } + + } /* End for TEST_LOOPING */ + + /* Call cleanup() to undo setup done for the test. */ + cleanup(); + + /*NOTREACHED*/ +} /* End main */ + +/* + * setup() - performs all ONE TIME setup for this test. + * Get the system page size. + * Create a temporary directory and a file under it. + * Write some known data into file. + */ +void +setup() +{ + char *tst_buff; /* test buffer to hold known data */ + + /* capture signals */ + tst_sig(NOFORK, DEF_HANDLER, cleanup); + + /* Pause if that option was specified */ + TEST_PAUSE; + + /* Get the system page size */ + if ((page_sz = getpagesize()) < 0) { + tst_brkm(TFAIL, NULL, + "getpagesize() fails to get system page size"); + tst_exit(); + } + + /* Allocate space for the test buffer */ + if ((tst_buff = (char *)calloc(page_sz, sizeof(char))) == NULL) { + tst_brkm(TFAIL, NULL, + "calloc() failed to allocate space for tst_buff"); + tst_exit(); + } + + /* Fill the test buffer with the known data */ + memset(tst_buff, 'A', page_sz); + + /* make a temp directory and cd to it */ + tst_tmpdir(); + + /* Creat a temporary file used for mapping */ + if ((fildes = open(TEMPFILE, O_WRONLY | O_CREAT, 0666)) < 0) { + tst_brkm(TFAIL, NULL, "open() on %s Failed, errno=%d : %s", + TEMPFILE, errno, strerror(errno)); + free(tst_buff); + cleanup(); + } + + /* Write test buffer contents into temporary file */ + if (write(fildes, tst_buff, strlen(tst_buff)) < strlen(tst_buff)) { + tst_brkm(TFAIL, NULL, "write() on %s Failed, errno=%d : %s", + TEMPFILE, errno, strerror(errno)); + free(tst_buff); + cleanup(); + } + + /* Free the memory allocated for test buffer */ + free(tst_buff); +} + +/* + * cleanup() - performs all ONE TIME cleanup for this test at + * completion or premature exit. + * Remove the temporary directory created. + */ +void +cleanup() +{ + /* + * print errno log if that option was specified. + */ + TEST_CLEANUP; + + if (fildes >= 0) + close (fildes); + + /* Remove tmp dir and all files in it */ + tst_rmdir(); + + /* exit with return code appropriate for results */ + tst_exit(); +} |