| /* |
| * mmap001.c - Tests mmapping a big file and writing it once |
| * |
| * Copyright (C) 2000 Juan Quintela <quintela@fi.udc.es> |
| * Aaron Laffin <alaffin@sgi.com> |
| * |
| * 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. |
| */ |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <fcntl.h> |
| #include <sys/mman.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <errno.h> |
| #include <string.h> |
| |
| #include "test.h" |
| #include "usctest.h" |
| |
| char *TCID="mmap001"; |
| int TST_TOTAL=5; |
| extern int Tst_count; |
| static char *filename=NULL; |
| static int m_opt = 0; |
| static char *m_copt; |
| |
| void cleanup() |
| { |
| /* |
| * remove the tmp directory and exit |
| */ |
| |
| if ( filename ) |
| free(filename); |
| |
| TEST_CLEANUP; |
| |
| tst_rmdir(); |
| |
| tst_exit(); |
| } |
| |
| void setup() |
| { |
| char buf[1024]; |
| /* |
| * setup a default signal hander and a |
| * temporary working directory. |
| */ |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| tst_tmpdir(); |
| |
| TEST_PAUSE; |
| |
| snprintf(buf,1024,"testfile.%d",getpid()); |
| |
| filename = strdup(buf); |
| } |
| |
| void help() |
| { |
| printf(" -m x size of mmap in pages (default 1000)\n"); |
| } |
| |
| /* |
| * add the -m option whose parameter is the |
| * pages that should be mapped. |
| */ |
| option_t options[] = |
| { |
| { "m:", &m_opt, &m_copt }, |
| { NULL, NULL, NULL } |
| }; |
| |
| int main(int argc, char * argv[]) |
| { |
| char *array,*msg; |
| int i,lc; |
| int fd; |
| int pages,memsize; |
| |
| if ( (msg=parse_opts(argc, argv, options, help)) != (char *) NULL ) |
| tst_brkm(TBROK, cleanup, "OPTION PARSING ERROR - %s", msg); |
| |
| if ( m_opt ) |
| { |
| memsize = pages = atoi( m_copt ); |
| |
| if (memsize < 1) |
| { |
| tst_brkm(TBROK, cleanup, "Invalid arg for -m: %s",m_copt); |
| } |
| |
| memsize *= getpagesize(); /* N PAGES */ |
| |
| } |
| else |
| { |
| /* |
| * default size 1000 pages; |
| */ |
| memsize = pages = 1000; |
| memsize *= getpagesize(); |
| } |
| |
| tst_resm(TINFO,"mmap()ing file of %d pages or %d bytes", pages,memsize); |
| |
| setup(); |
| |
| for (lc=0; TEST_LOOPING(lc); lc++) |
| { |
| Tst_count=0; |
| |
| fd = open(filename, O_RDWR | O_CREAT, 0666); |
| if ((fd == -1)) |
| tst_brkm(TBROK, cleanup, "Problems opening files"); |
| |
| if (lseek(fd, memsize, SEEK_SET) != memsize) |
| { |
| close(fd); |
| tst_brkm(TBROK, cleanup, "Problems doing the lseek: %d: %s", |
| errno,strerror(errno)); |
| } |
| |
| if (write(fd,"\0",1) !=1) |
| { |
| close(fd); |
| tst_brkm(TBROK, cleanup, "Problems writing: %d: %s", |
| errno,strerror(errno)); |
| } |
| |
| array = mmap(0, memsize, PROT_WRITE, MAP_SHARED,fd,0); |
| if (array == (char *)MAP_FAILED) |
| { |
| tst_resm(TFAIL, "mmap() failed: %d: %s", |
| errno,strerror(errno)); |
| tst_exit(); |
| } |
| else |
| { |
| tst_resm(TPASS, "mmap() completed successfully."); |
| } |
| |
| if ( STD_FUNCTIONAL_TEST ) |
| { |
| tst_resm(TINFO,"touching mmaped memory"); |
| |
| for(i = 0; i < memsize; i++) |
| { |
| array[i] = (char) i; |
| } |
| |
| /* |
| * seems that if the map area was bad, we'd get SEGV, hence we can |
| * indicate a PASS. |
| */ |
| tst_resm(TPASS, "we're still here, mmaped area must be good"); |
| |
| TEST( msync(array, memsize, MS_SYNC) ); |
| |
| if ( TEST_RETURN == -1 ) |
| { |
| tst_resm(TFAIL, "msync() failed: errno: %d: %s", |
| TEST_ERRNO, strerror(TEST_ERRNO)); |
| } |
| else |
| { |
| tst_resm(TPASS, "msync() was successful"); |
| } |
| |
| } /* STD_FUNCTIONAL_TEST */ |
| |
| TEST( munmap(array, memsize) ); |
| |
| if ( TEST_RETURN == -1 ) |
| { |
| tst_resm(TFAIL, "munmap() failed: errno: %d: %s", |
| TEST_ERRNO, strerror(TEST_ERRNO)); |
| } |
| else |
| { |
| tst_resm(TPASS, "munmap() was successful"); |
| } |
| |
| close(fd); |
| unlink(filename); |
| } |
| cleanup(); |
| } |