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; 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 } else { 60 off = -1; 61 } 62 63 for (i = 0; i < ac; ++i) 64 hammer_do_history(av[i], off, len); 65 } 66 67 static void 68 hammer_do_history(const char *path, off_t off, int len) 69 { 70 struct hammer_ioc_history hist; 71 const char *status; 72 int fd; 73 int i; 74 75 printf("%s\t", path); 76 fd = open(path, O_RDONLY); 77 if (fd < 0) { 78 printf("%s\n", strerror(errno)); 79 return; 80 } 81 bzero(&hist, sizeof(hist)); 82 hist.beg_tid = HAMMER_MIN_TID; 83 hist.end_tid = HAMMER_MAX_TID; 84 85 if (off >= 0) { 86 hist.head.flags |= HAMMER_IOC_HISTORY_ATKEY; 87 hist.key = off; 88 hist.nxt_key = off + 1; 89 } 90 91 92 if (ioctl(fd, HAMMERIOC_GETHISTORY, &hist) < 0) { 93 printf("%s\n", strerror(errno)); 94 close(fd); 95 return; 96 } 97 status = ((hist.head.flags & HAMMER_IOC_HISTORY_UNSYNCED) ? 98 "dirty" : "clean"); 99 printf("%016llx %s {\n", hist.obj_id, status); 100 for (;;) { 101 for (i = 0; i < hist.count; ++i) { 102 char *hist_path = NULL; 103 104 asprintf(&hist_path, "%s@@0x%016llx", 105 path, hist.hist_ary[i].tid); 106 printf(" %016llx %s", 107 hist.hist_ary[i].tid, 108 timestr32(hist.hist_ary[i].time32)); 109 if (off >= 0) { 110 if (VerboseOpt) { 111 printf(" '"); 112 dumpat(hist_path, off, len); 113 printf("'"); 114 } 115 } 116 printf("\n"); 117 free(hist_path); 118 } 119 if (hist.head.flags & HAMMER_IOC_HISTORY_EOF) 120 break; 121 if (hist.head.flags & HAMMER_IOC_HISTORY_NEXT_KEY) 122 break; 123 if ((hist.head.flags & HAMMER_IOC_HISTORY_NEXT_TID) == 0) 124 break; 125 hist.beg_tid = hist.nxt_tid; 126 if (ioctl(fd, HAMMERIOC_GETHISTORY, &hist) < 0) { 127 printf(" error: %s\n", strerror(errno)); 128 break; 129 } 130 } 131 printf("}\n"); 132 close(fd); 133 } 134 135 static void 136 dumpat(const char *path, off_t off, int len) 137 { 138 char buf[1024]; 139 int fd; 140 int n; 141 int r; 142 143 fd = open(path, O_RDONLY); 144 if (fd < 0) 145 return; 146 lseek(fd, off, 0); 147 while (len) { 148 n = (len > (int)sizeof(buf)) ? (int)sizeof(buf) : len; 149 r = read(fd, buf, n); 150 if (r <= 0) 151 break; 152 len -= r; 153 for (n = 0; n < r; ++n) { 154 if (isprint(buf[n])) 155 putc(buf[n], stdout); 156 else 157 putc('.', stdout); 158 } 159 } 160 } 161 162 /* 163 * Return a human-readable timestamp 164 */ 165 static const char * 166 timestr32(u_int32_t time32) 167 { 168 static char timebuf[64]; 169 time_t t = (time_t)time32; 170 struct tm *tp; 171 172 tp = localtime(&t); 173 strftime(timebuf, sizeof(timebuf), "%d-%b-%Y %H:%M:%S", tp); 174 return(timebuf); 175 } 176 177