| /* IBM Corporation */ |
| /* 01/03/2003 Port to LTP avenkat@us.ibm.com */ |
| /* 06/30/2001 Port to Linux nsharoff@us.ibm.com */ |
| |
| /* |
| * Copyright (c) International Business Machines Corp., 2003 |
| * |
| * 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 |
| */ |
| |
| /* |
| * Mmap a sparse file and then fiddle with the hole in the middle. |
| * Then check the file contents. |
| * |
| * Usage: mmapstress07 filename holesize e_pageskip sparseoff |
| * EXAMPLE: mmapstress07 myfile 4096 1 4096 |
| */ |
| #include <stdio.h> |
| #include <sys/types.h> |
| #include <sys/mman.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <signal.h> |
| #include <errno.h> |
| #include <sys/wait.h> |
| #include "test.h" |
| #include "usctest.h" |
| #define FAILED 0 |
| #define PASSED 1 |
| |
| static char *tmpname; |
| |
| #define ERROR(M) (void)fprintf(stderr, "%s: errno = %d: " M "\n", \ |
| argv[0], errno) |
| |
| #define CLEANERROR(M) (void)close(rofd); \ |
| (void)close(rwfd); \ |
| (void)unlink(tmpname); \ |
| ERROR(M) |
| |
| #define CATCH_SIG(SIG) \ |
| if (sigaction(SIG, &sa, 0) == -1) { \ |
| ERROR("couldn't catch signal " #SIG); \ |
| exit(1); \ |
| } |
| |
| extern time_t time(time_t *); |
| extern char *ctime(const time_t *); |
| extern void exit(int); |
| static int checkchars(int fd, char val, int n); |
| |
| char *TCID = "mmapstress07"; |
| |
| int local_flag = PASSED; |
| int block_number; |
| FILE *temp; |
| int TST_TOTAL = 1; |
| |
| int anyfail(); |
| void ok_exit(); |
| |
| /*ARGSUSED*/ static |
| void cleanup(int sig) |
| { |
| /* |
| * Don't check error codes - we could be signaled before the file is |
| * created. |
| */ |
| (void)unlink(tmpname); |
| exit(1); |
| } |
| |
| int main(int argc, char **argv) |
| { |
| size_t pagesize = (size_t) sysconf(_SC_PAGE_SIZE); |
| caddr_t mapaddr; |
| time_t t; |
| int rofd, rwfd, i; |
| struct sigaction sa; |
| int e_pageskip; |
| #ifdef LARGE_FILE |
| off64_t holesize; |
| off64_t sparseoff; |
| #else /* LARGE_FILE */ |
| off_t holesize; |
| off_t sparseoff; |
| #endif /* LARGE_FILE */ |
| |
| (void)time(&t); |
| // (void)printf("%s: Started %s", argv[0], ctime(&t)); |
| /* Test fsync & mmap over a hole in a sparse file & extend fragment */ |
| if (argc < 2 || argc > 5) { |
| fprintf(stderr, |
| "Usage: mmapstress07 filename holesize e_pageskip sparseoff\n"); |
| /***** ** LTP Port 02/01/03 ** **** */ |
| fprintf(stderr, |
| "\t*holesize should be a multiple of pagesize\n"); |
| fprintf(stderr, "\t*e_pageskip should be 1 always \n"); |
| fprintf(stderr, |
| "\t*sparseoff should be a multiple of pagesize\n"); |
| fprintf(stderr, "Example: mmapstress07 myfile 4096 1 8192\n"); |
| /***** ** ****** ***** ***** ** 02/01/03 */ |
| anyfail(); /* LTP Port */ |
| } |
| tst_tmpdir(); |
| tmpname = argv[1]; |
| |
| if (argc >= 3) { |
| #ifdef LARGE_FILE |
| holesize = atoll(argv[2]); |
| #else /* LARGE_FILE */ |
| holesize = atoi(argv[2]); |
| #endif /* LARGE_FILE */ |
| } else |
| holesize = pagesize; |
| |
| if (argc >= 4) |
| e_pageskip = atoi(argv[3]); |
| else |
| e_pageskip = 1; |
| |
| if (argc >= 5) { |
| #ifdef LARGE_FILE |
| sparseoff = atoll(argv[4]); |
| #else /* LARGE_FILE */ |
| sparseoff = atoi(argv[4]); |
| #endif /* LARGE_FILE */ |
| } else |
| sparseoff = pagesize * 2; |
| |
| sa.sa_handler = cleanup; |
| sa.sa_flags = 0; |
| if (sigemptyset(&sa.sa_mask)) { |
| ERROR("sigemptyset failed"); |
| return 1; |
| } |
| CATCH_SIG(SIGINT); |
| CATCH_SIG(SIGQUIT); |
| CATCH_SIG(SIGTERM); |
| #ifdef LARGE_FILE |
| if ((rofd = open64(tmpname, O_RDONLY | O_CREAT, 0777)) == -1) { |
| #else /* LARGE_FILE */ |
| if ((rofd = open(tmpname, O_RDONLY | O_CREAT, 0777)) == -1) { |
| #endif /* LARGE_FILE */ |
| ERROR("couldn't reopen rofd for reading"); |
| anyfail(); /* LTP Port */ |
| } |
| #ifdef LARGE_FILE |
| if ((rwfd = open64(tmpname, O_RDWR)) == -1) { |
| #else /* LARGE_FILE */ |
| if ((rwfd = open(tmpname, O_RDWR)) == -1) { |
| #endif /* LARGE_FILE */ |
| CLEANERROR("couldn't reopen rwfd for read/write"); |
| anyfail(); /* LTP Port */ |
| } |
| #ifdef LARGE_FILE |
| if (lseek64(rwfd, sparseoff, SEEK_SET) < 0) { |
| #else /* LARGE_FILE */ |
| if (lseek(rwfd, sparseoff, SEEK_SET) < 0) { |
| #endif /* LARGE_FILE */ |
| perror("lseek"); |
| anyfail(); /* LTP Port */ |
| } |
| /* fill file with junk. */ |
| i = 0; |
| while (i < pagesize && write(rwfd, "a", 1) == 1) |
| i++; |
| if (i != pagesize) { |
| CLEANERROR("couldn't fill first part of file with junk"); |
| anyfail(); /* LTP Port */ |
| } |
| #ifdef LARGE_FILE |
| if (lseek64(rwfd, holesize, SEEK_CUR) == -1) { |
| #else /* LARGE_FILE */ |
| if (lseek(rwfd, holesize, SEEK_CUR) == -1) { |
| #endif /* LARGE_FILE */ |
| CLEANERROR("couldn't create hole in file"); |
| anyfail(); /* LTP Port */ |
| } |
| /* create fragment */ |
| i = 0; |
| while (i < (pagesize >> 1) && write(rwfd, "b", 1) == 1) |
| i++; |
| if (i != (pagesize >> 1)) { |
| CLEANERROR("couldn't fill second part of file with junk"); |
| anyfail(); /* LTP Port */ |
| } |
| /* At this point fd contains 1 page of a's, holesize bytes skipped, |
| * 1/2 page of b's. |
| */ |
| |
| #ifdef LARGE_FILE |
| if ((mapaddr = mmap64((caddr_t) 0, pagesize * 2 + holesize, PROT_READ, |
| MAP_SHARED | MAP_FILE, rofd, |
| sparseoff)) == (caddr_t) - 1) { |
| #else /* LARGE_FILE */ |
| if ((mapaddr = mmap((caddr_t) 0, pagesize * 2 + holesize, PROT_READ, |
| MAP_SHARED | MAP_FILE, rofd, |
| sparseoff)) == (caddr_t) - 1) { |
| #endif /* LARGE_FILE */ |
| CLEANERROR("mmap tmp file failed"); |
| anyfail(); /* LTP Port */ |
| } |
| /* fill out remainder of page + one more page to extend mmapped flag */ |
| while (i < 2 * pagesize && write(rwfd, "c", 1) == 1) |
| i++; |
| if (i != 2 * pagesize) { |
| CLEANERROR("couldn't fill second part of file with junk"); |
| anyfail(); /* LTP Port */ |
| } |
| /* fiddle with mmapped hole */ |
| if (*(mapaddr + pagesize + (holesize >> 1)) != 0) { |
| CLEANERROR("hole not filled with 0's"); |
| anyfail(); /* LTP Port */ |
| } |
| #ifdef LARGE_FILE |
| if (lseek64(rwfd, sparseoff + e_pageskip * pagesize, SEEK_SET) == -1) { |
| #else /* LARGE_FILE */ |
| if (lseek(rwfd, sparseoff + e_pageskip * pagesize, SEEK_SET) == -1) { |
| #endif /* LARGE_FILE */ |
| CLEANERROR("couldn't lseek back to put e's in hole"); |
| anyfail(); /*LTP Port */ |
| } |
| i = 0; |
| while (i < pagesize && write(rwfd, "e", 1) == 1) |
| i++; |
| if (i != pagesize) { |
| CLEANERROR("couldn't part of hole with e's"); |
| anyfail(); /*LTP Port */ |
| } |
| if (fsync(rwfd) == -1) { |
| CLEANERROR("fsync failed"); |
| anyfail(); /* LTP Port */ |
| } |
| #ifdef LARGE_FILE |
| if (lseek64(rofd, sparseoff, SEEK_SET) == -1) { |
| #else /* LARGE_FILE */ |
| if (lseek(rofd, sparseoff, SEEK_SET) == -1) { |
| #endif /* LARGE_FILE */ |
| CLEANERROR("couldn't lseek to begining to verify contents"); |
| anyfail(); /* LTP Port */ |
| } |
| if (munmap(mapaddr, holesize + 2 * pagesize) == -1) { |
| CLEANERROR("munmap of tmp file failed"); |
| anyfail(); /* LTP Port */ |
| } |
| /* check file's contents */ |
| if (checkchars(rofd, 'a', pagesize)) { |
| CLEANERROR("first page not filled with a's"); |
| anyfail(); /* LTP Port */ |
| } |
| if (checkchars(rofd, '\0', (e_pageskip - 1) * pagesize)) { |
| CLEANERROR("e_skip not filled with 0's"); |
| anyfail(); /* LTP Port */ |
| } |
| if (checkchars(rofd, 'e', pagesize)) { |
| CLEANERROR("part after first 0's not filled with e's"); |
| anyfail(); /* LTP Port */ |
| } |
| if (checkchars(rofd, '\0', holesize - e_pageskip * pagesize)) { |
| CLEANERROR("second hole section not filled with 0's"); |
| anyfail(); /* LTP Port */ |
| } |
| if (checkchars(rofd, 'b', (pagesize >> 1))) { |
| CLEANERROR("next to last half page not filled with b's"); |
| anyfail(); /* LTP Port */ |
| } |
| if (checkchars(rofd, 'c', pagesize + (pagesize >> 1))) { |
| CLEANERROR("extended fragment not filled with c's"); |
| anyfail(); /* LTP Port */ |
| } |
| if (close(rofd) == -1) { |
| CLEANERROR("second close of rofd failed"); |
| anyfail(); /* LTP Port */ |
| } |
| if (unlink(tmpname) == -1) { |
| CLEANERROR("unlink failed"); |
| anyfail(); /* LTP Port */ |
| } |
| (void)time(&t); |
| // (void)printf("%s: Finished %s", argv[0], ctime(&t)); |
| ok_exit(); |
| tst_exit(); |
| } |
| |
| /* checkchars |
| * verrify that the next n characters of file fd are of value val. |
| * 0 = success; -1 = failure |
| */ |
| static int checkchars(int fd, char val, int n) |
| { |
| int i; |
| char buf; |
| |
| for (i = 0; i < n && read(fd, &buf, 1) == 1; i++) |
| if (buf != val) |
| return -1; |
| return 0; |
| } |
| |
| /***** ** LTP Port ** *****/ |
| int anyfail() |
| { |
| tst_brkm(TFAIL, tst_rmdir, "Test failed\n"); |
| } |
| |
| void ok_exit() |
| { |
| tst_resm(TPASS, "Test passed\n"); |
| tst_rmdir(); |
| tst_exit(); |
| } |
| |
| /***** ** ****** ** *****/ |