1 /* 2 * Copyright (c) 2008 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Matthew Dillon <dillon@backplane.com> 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 3. Neither the name of The DragonFly Project nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific, prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * $DragonFly: src/sbin/hammer/cmd_history.c,v 1.4 2008/06/24 17:40:21 dillon Exp $ 35 */ 36 37 #include "hammer.h" 38 39 static void hammer_do_history(const char *path, off_t off, int len); 40 static void dumpat(const char *path, off_t off, int len); 41 static const char *timestr32(u_int32_t time32); 42 43 /* 44 * history <file1> ... <fileN> 45 */ 46 void 47 hammer_cmd_history(const char *offset_str, char **av, int ac) 48 { 49 off_t off; 50 int i = 0; 51 int len; 52 char *rptr; 53 54 len = 32; 55 if (*offset_str == '@') { 56 off = strtoll(offset_str + 1, &rptr, 0); 57 if (*rptr == ',') 58 len = strtol(rptr + 1, NULL, 0); 59 i = 1; 60 } else { 61 off = -1; 62 } 63 64 for (; i < ac; ++i) 65 hammer_do_history(av[i], off, len); 66 } 67 68 static void 69 hammer_do_history(const char *path, off_t off, int len) 70 { 71 struct hammer_ioc_history hist; 72 const char *status; 73 int fd; 74 int i; 75 76 printf("%s\t", path); 77 fd = open(path, O_RDONLY); 78 if (fd < 0) { 79 printf("%s\n", strerror(errno)); 80 return; 81 } 82 bzero(&hist, sizeof(hist)); 83 hist.beg_tid = HAMMER_MIN_TID; 84 hist.end_tid = HAMMER_MAX_TID; 85 86 if (off >= 0) { 87 hist.head.flags |= HAMMER_IOC_HISTORY_ATKEY; 88 hist.key = off; 89 hist.nxt_key = off + 1; 90 } 91 92 93 if (ioctl(fd, HAMMERIOC_GETHISTORY, &hist) < 0) { 94 printf("%s\n", strerror(errno)); 95 close(fd); 96 return; 97 } 98 status = ((hist.head.flags & HAMMER_IOC_HISTORY_UNSYNCED) ? 99 "dirty" : "clean"); 100 printf("%016jx %s {\n", (uintmax_t)hist.obj_id, status); 101 for (;;) { 102 for (i = 0; i < hist.count; ++i) { 103 char *hist_path = NULL; 104 105 asprintf(&hist_path, "%s@@0x%016jx", 106 path, (uintmax_t)hist.hist_ary[i].tid); 107 printf(" %016jx %s", 108 (uintmax_t)hist.hist_ary[i].tid, 109 timestr32(hist.hist_ary[i].time32)); 110 if (off >= 0) { 111 if (VerboseOpt) { 112 printf(" '"); 113 dumpat(hist_path, off, len); 114 printf("'"); 115 } 116 } 117 printf("\n"); 118 free(hist_path); 119 } 120 if (hist.head.flags & HAMMER_IOC_HISTORY_EOF) 121 break; 122 if (hist.head.flags & HAMMER_IOC_HISTORY_NEXT_KEY) 123 break; 124 if ((hist.head.flags & HAMMER_IOC_HISTORY_NEXT_TID) == 0) 125 break; 126 hist.beg_tid = hist.nxt_tid; 127 if (ioctl(fd, HAMMERIOC_GETHISTORY, &hist) < 0) { 128 printf(" error: %s\n", strerror(errno)); 129 break; 130 } 131 } 132 printf("}\n"); 133 close(fd); 134 } 135 136 static void 137 dumpat(const char *path, off_t off, int len) 138 { 139 char buf[1024]; 140 int fd; 141 int n; 142 int r; 143 144 fd = open(path, O_RDONLY); 145 if (fd < 0) 146 return; 147 lseek(fd, off, 0); 148 while (len) { 149 n = (len > (int)sizeof(buf)) ? (int)sizeof(buf) : len; 150 r = read(fd, buf, n); 151 if (r <= 0) 152 break; 153 len -= r; 154 for (n = 0; n < r; ++n) { 155 if (isprint(buf[n])) 156 putc(buf[n], stdout); 157 else 158 putc('.', stdout); 159 } 160 } 161 } 162 163 /* 164 * Return a human-readable timestamp 165 */ 166 static const char * 167 timestr32(u_int32_t time32) 168 { 169 static char timebuf[64]; 170 time_t t = (time_t)time32; 171 struct tm *tp; 172 173 tp = localtime(&t); 174 strftime(timebuf, sizeof(timebuf), "%d-%b-%Y %H:%M:%S", tp); 175 return(timebuf); 176 } 177