1 /* 2 * Copyright (c) 2009 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Antonio Huete <tuxillo@quantumachine.net> 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 */ 35 36 #include <libutil.h> 37 #include <libhammer.h> 38 39 #include "hammer.h" 40 41 void show_info(char *path); 42 static double percent(int64_t value, int64_t total); 43 44 void 45 hammer_cmd_info(char **av, int ac) 46 { 47 struct statfs *stfsbuf; 48 int mntsize, i, first = 1; 49 char *fstype, *path; 50 51 tzset(); 52 53 if (ac > 0) { 54 while (ac) { 55 show_info(*av); 56 --ac; 57 ++av; 58 if (ac) 59 printf("\n"); 60 } 61 } else { 62 mntsize = getmntinfo(&stfsbuf, MNT_NOWAIT); 63 if (mntsize > 0) { 64 for (i = 0; i < mntsize; i++) { 65 fstype = stfsbuf[i].f_fstypename; 66 path = stfsbuf[i].f_mntonname; 67 if ((strcmp(fstype, "hammer")) == 0) { 68 if (first) 69 first = 0; 70 else 71 printf("\n"); 72 show_info(path); 73 } 74 } 75 if (first) 76 printf("No mounted HAMMER filesystems found\n"); 77 } else { 78 printf("No mounted filesystems found\n"); 79 } 80 } 81 } 82 83 void 84 show_info(char *path) 85 { 86 libhammer_fsinfo_t fip; 87 libhammer_pfsinfo_t pi, pi_first; 88 struct hammer_ioc_volume_list ioc; 89 int64_t usedbigblocks; 90 int64_t usedbytes, rsvbytes; 91 int64_t totalbytes, freebytes; 92 char *fsid; 93 char buf[6]; 94 char rootvol[MAXPATHLEN]; 95 int i; 96 97 fsid = NULL; 98 usedbigblocks = 0; 99 100 usedbytes = totalbytes = rsvbytes = freebytes = 0; 101 102 fip = libhammer_get_fsinfo(path); 103 if (fip == NULL) { 104 perror("libhammer_get_fsinfo"); 105 exit(EXIT_FAILURE); 106 } 107 108 /* Find out the UUID strings */ 109 uuid_to_string(&fip->vol_fsid, &fsid, NULL); 110 111 /* Get the volume paths */ 112 if (hammer_fs_to_vol(path, &ioc) == -1) { 113 fprintf(stderr, "Failed to get volume paths\n"); 114 exit(1); 115 } 116 117 /* Get the root volume path */ 118 if (hammer_fs_to_rootvol(path, rootvol, sizeof(rootvol)) == -1) { 119 fprintf(stderr, "Failed to get root volume path\n"); 120 exit(1); 121 } 122 123 /* Volume information */ 124 printf("Volume identification\n"); 125 printf("\tLabel %s\n", fip->vol_name); 126 printf("\tNo. Volumes %d\n", fip->nvolumes); 127 printf("\tHAMMER Volumes "); 128 for (i = 0; i < ioc.nvols; i++) { 129 printf("%s", ioc.vols[i].device_name); 130 if (i != ioc.nvols - 1) 131 printf(":"); 132 } 133 printf("\n"); 134 printf("\tRoot Volume %s\n", rootvol); 135 printf("\tFSID %s\n", fsid); 136 printf("\tHAMMER Version %d\n", fip->version); 137 138 /* Big-blocks information */ 139 usedbigblocks = fip->bigblocks - fip->freebigblocks; 140 141 printf("Big-block information\n"); 142 printf("\tTotal %10jd\n", (intmax_t)fip->bigblocks); 143 printf("\tUsed %10jd (%.2lf%%)\n" 144 "\tReserved %10jd (%.2lf%%)\n" 145 "\tFree %10jd (%.2lf%%)\n", 146 (intmax_t)usedbigblocks, 147 percent(usedbigblocks, fip->bigblocks), 148 (intmax_t)fip->rsvbigblocks, 149 percent(fip->rsvbigblocks, fip->bigblocks), 150 (intmax_t)(fip->freebigblocks - fip->rsvbigblocks), 151 percent(fip->freebigblocks - fip->rsvbigblocks, fip->bigblocks)); 152 printf("Space information\n"); 153 154 /* Space information */ 155 totalbytes = (fip->bigblocks << HAMMER_BIGBLOCK_BITS); 156 usedbytes = (usedbigblocks << HAMMER_BIGBLOCK_BITS); 157 rsvbytes = (fip->rsvbigblocks << HAMMER_BIGBLOCK_BITS); 158 freebytes = ((fip->freebigblocks - fip->rsvbigblocks) 159 << HAMMER_BIGBLOCK_BITS); 160 161 printf("\tNo. Inodes %10jd\n", (intmax_t)fip->inodes); 162 humanize_number(buf, sizeof(buf) - (totalbytes < 0 ? 0 : 1), 163 totalbytes, "", HN_AUTOSCALE, HN_DECIMAL | HN_NOSPACE | HN_B); 164 printf("\tTotal size %6s (%jd bytes)\n", 165 buf, (intmax_t)totalbytes); 166 167 humanize_number(buf, sizeof(buf) - (usedbytes < 0 ? 0 : 1), 168 usedbytes, "", HN_AUTOSCALE, HN_DECIMAL | HN_NOSPACE | HN_B); 169 printf("\tUsed %6s (%.2lf%%)\n", buf, 170 percent(usedbytes, totalbytes)); 171 172 humanize_number(buf, sizeof(buf) - (rsvbytes < 0 ? 0 : 1), 173 rsvbytes, "", HN_AUTOSCALE, HN_DECIMAL | HN_NOSPACE | HN_B); 174 printf("\tReserved %6s (%.2lf%%)\n", buf, 175 percent(rsvbytes, totalbytes)); 176 177 humanize_number(buf, sizeof(buf) - (freebytes < 0 ? 0 : 1), 178 freebytes, "", HN_AUTOSCALE, HN_DECIMAL | HN_NOSPACE | HN_B); 179 printf("\tFree %6s (%.2lf%%)\n", buf, 180 percent(freebytes, totalbytes)); 181 182 /* Pseudo-filesystem information */ 183 printf("PFS information\n"); 184 printf("\tPFS ID Mode Snaps\n"); 185 186 /* Iterate all the PFSs found */ 187 pi_first = libhammer_get_first_pfs(fip); 188 for (pi = pi_first; pi != NULL; pi = libhammer_get_next_pfs(pi)) { 189 printf("\t%6d %-6s", 190 pi->pfs_id, (pi->ismaster ? "MASTER" : "SLAVE")); 191 192 snprintf(buf, 6, "%d", pi->snapcount); 193 printf(" %6s\n", (pi->head.error && pi->snapcount == 0) ? "-" : buf); 194 } 195 196 free(fsid); 197 198 libhammer_free_fsinfo(fip); 199 200 } 201 202 static double 203 percent(int64_t value, int64_t total) 204 { 205 /* Avoid divide-by-zero */ 206 if (total == 0) 207 return 100.0; 208 209 return ((value * 100.0) / (double)total); 210 } 211