1 /* 2 * Copyright (c) 2011-2013 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Matthew Dillon <dillon@dragonflybsd.org> 6 * by Venkatesh Srinivas <vsrinivas@dragonflybsd.org> 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in 16 * the documentation and/or other materials provided with the 17 * distribution. 18 * 3. Neither the name of The DragonFly Project nor the names of its 19 * contributors may be used to endorse or promote products derived 20 * from this software without specific, prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 25 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 26 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 28 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 29 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 30 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 31 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 32 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include "hammer2.h" 37 38 /* 39 * The snapshot is named <PFSNAME>_<YYYYMMDD.HHMMSS.TRANSID> unless 40 * overridden by a label. 41 * 42 * When local non-cache media is involved the media is 43 * first synchronized and the snapshot is then based on 44 * the media. 45 * 46 * If the media is remote the snapshot is created on the remote 47 * end (if you have sufficient administrative rights) and a local 48 * ADMIN or CACHE PFS is created with a connection to the snapshot 49 * on the remote. 50 * 51 * If the client has snapshot rights to multiple remotes then TBD. 52 */ 53 54 int 55 cmd_pfs_snapshot(const char *sel_path, const char *path, const char *label) 56 { 57 hammer2_ioc_pfs_t pfs; 58 int ecode = 0; 59 int fd; 60 char filename[HAMMER2_INODE_MAXNAME]; 61 char *xname; 62 time_t t; 63 struct tm *tp; 64 65 if (path == NULL) { 66 fd = hammer2_ioctl_handle(sel_path); 67 xname = strdup(""); 68 } else { 69 fd = open(path, O_RDONLY); 70 if (fd < 0) 71 fprintf(stderr, "Unable to open %s\n", path); 72 if (strrchr(path, '/')) 73 asprintf(&xname, ".%s", strrchr(path, '/') + 1); 74 else if (*path) 75 asprintf(&xname, ".%s", path); 76 else 77 xname = strdup(""); 78 } 79 if (fd < 0) 80 return 1; 81 82 if (label == NULL) { 83 time(&t); 84 tp = localtime(&t); 85 bzero(&pfs, sizeof(pfs)); 86 pfs.name_key = (hammer2_key_t)-1; 87 if (ioctl(fd, HAMMER2IOC_PFS_GET, &pfs) < 0) { 88 perror("ioctl"); 89 } 90 snprintf(filename, sizeof(filename), 91 "%s%s.%04d%02d%02d.%02d%02d%02d", 92 pfs.name, 93 xname, 94 tp->tm_year + 1900, 95 tp->tm_mon + 1, 96 tp->tm_mday, 97 tp->tm_hour, 98 tp->tm_min, 99 tp->tm_sec); 100 label = filename; 101 } 102 103 bzero(&pfs, sizeof(pfs)); 104 snprintf(pfs.name, sizeof(pfs.name), "%s", label); 105 106 if (ioctl(fd, HAMMER2IOC_PFS_SNAPSHOT, &pfs) < 0) { 107 perror("ioctl"); 108 ecode = 1; 109 } else { 110 printf("created snapshot %s\n", label); 111 } 112 return ecode; 113 } 114