1 /* 2 * This file and its contents are supplied under the terms of the 3 * Common Development and Distribution License ("CDDL"), version 1.0. 4 * You may only use this file in accordance with the terms of version 5 * 1.0 of the CDDL. 6 * 7 * A full copy of the text of the CDDL should have accompanied this 8 * source. A copy of the CDDL is also available via the Internet at 9 * http://www.illumos.org/license/CDDL. 10 */ 11 12 /* 13 * Copyright 2012 Jilin Xpd <jilinxpd@gmail.com> 14 * Copyright 2018 Nexenta Systems, Inc. 15 */ 16 17 /* 18 * It doesn't matter if the userland forgets to close the file or 19 * munmap it, because smbfs will help close it(including otW close) 20 * and sync the dirty pages to the file. 21 * This program tests if smbfs works as we said. 22 */ 23 24 #include <sys/mman.h> 25 #include <sys/types.h> 26 #include <sys/stat.h> 27 #include <fcntl.h> 28 #include <stdio.h> 29 #include <stdlib.h> 30 #include <unistd.h> 31 #include <string.h> 32 #include <errno.h> 33 34 int 35 main(int argc, char **argv) 36 { 37 char *file_addr; 38 off_t offset; 39 size_t filesize; 40 size_t blksize; 41 int fid; 42 int i; 43 char *c = "?#*%&"; 44 45 if (argc != 2) { 46 fprintf(stderr, "\tusage:\n\tno_close <filename>\n"); 47 return (1); 48 } 49 50 /* open test file */ 51 fid = open(argv[1], O_RDWR | O_CREAT | O_TRUNC, 52 S_IRUSR | S_IWUSR | S_IROTH | S_IWOTH); 53 if (fid == -1) { 54 fprintf(stderr, "open %s error=%d\n", argv[1], errno); 55 return (1); 56 } 57 58 /* extend file */ 59 filesize = 64 * 1024; 60 if (ftruncate(fid, filesize) == -1) { 61 fprintf(stderr, "ftrunc %s error=%d\n", argv[1], errno); 62 return (1); 63 } 64 65 /* map file */ 66 file_addr = mmap(NULL, filesize, 67 PROT_READ | PROT_WRITE, MAP_SHARED, fid, 0); 68 if (file_addr == MAP_FAILED) { 69 fprintf(stderr, "mmap %s error=%d\n", argv[1], errno); 70 return (1); 71 } 72 73 /* write something into mapped addr */ 74 blksize = filesize / 4; 75 for (i = 0, offset = 0; i < 4; i++, offset += blksize) { 76 memset(file_addr + offset, c[i], blksize); 77 } 78 memset(file_addr + offset, c[i], filesize - offset); 79 80 /* no msync, munmap, close */ 81 82 _exit(0); 83 /* NOTREACHED */ 84 } 85