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 #include <libhammer.h> 36 #include <libutil.h> 37 38 #include "hammer.h" 39 40 void show_info(char *path); 41 static double percent(int64_t value, int64_t total); 42 43 void 44 hammer_cmd_info(void) 45 { 46 struct statfs *stfsbuf; 47 int mntsize, i, first = 1; 48 char *fstype, *path; 49 50 tzset(); 51 mntsize = getmntinfo(&stfsbuf, MNT_NOWAIT); 52 if (mntsize > 0) { 53 for (i = 0; i < mntsize; i++) { 54 fstype = stfsbuf[i].f_fstypename; 55 path = stfsbuf[i].f_mntonname; 56 if ((strcmp(fstype, "hammer")) == 0) { 57 if (first) 58 first = 0; 59 else 60 fprintf(stdout, "\n"); 61 show_info(path); 62 } 63 } 64 } else { 65 fprintf(stdout, "No mounted filesystems found\n"); 66 } 67 68 } 69 70 void 71 show_info(char *path) 72 { 73 libhammer_volinfo_t hvi; 74 libhammer_pfsinfo_t pi, pi_first; 75 int64_t usedbigblocks; 76 int64_t usedbytes, rsvbytes; 77 int64_t totalbytes, freebytes; 78 char *fsid; 79 char buf[6]; 80 81 fsid = NULL; 82 usedbigblocks = 0; 83 84 usedbytes = totalbytes = rsvbytes = freebytes = 0; 85 86 hvi = libhammer_get_volinfo(path); 87 if (hvi == NULL) { 88 perror("libhammer_get_volinfo"); 89 exit(EXIT_FAILURE); 90 } 91 92 /* Find out the UUID strings */ 93 uuid_to_string(&hvi->vol_fsid, &fsid, NULL); 94 95 /* Volume information */ 96 fprintf(stdout, "Volume identification\n"); 97 fprintf(stdout, "\tLabel %s\n", hvi->vol_name); 98 fprintf(stdout, "\tNo. Volumes %d\n", hvi->nvolumes); 99 fprintf(stdout, "\tFSID %s\n", fsid); 100 fprintf(stdout, "\tHAMMER Version %d\n", hvi->version); 101 102 /* Big blocks information */ 103 usedbigblocks = hvi->bigblocks - hvi->freebigblocks; 104 105 fprintf(stdout, "Big block information\n"); 106 fprintf(stdout, "\tTotal %10jd\n", (intmax_t)hvi->bigblocks); 107 fprintf(stdout, "\tUsed %10jd (%.2lf%%)\n" 108 "\tReserved %10jd (%.2lf%%)\n" 109 "\tFree %10jd (%.2lf%%)\n", 110 (intmax_t)usedbigblocks, 111 percent(usedbigblocks, hvi->bigblocks), 112 (intmax_t)hvi->rsvbigblocks, 113 percent(hvi->rsvbigblocks, hvi->bigblocks), 114 (intmax_t)(hvi->freebigblocks - hvi->rsvbigblocks), 115 percent(hvi->freebigblocks - hvi->rsvbigblocks, 116 hvi->bigblocks)); 117 fprintf(stdout, "Space information\n"); 118 119 /* Space information */ 120 totalbytes = (hvi->bigblocks << HAMMER_LARGEBLOCK_BITS); 121 usedbytes = (usedbigblocks << HAMMER_LARGEBLOCK_BITS); 122 rsvbytes = (hvi->rsvbigblocks << HAMMER_LARGEBLOCK_BITS); 123 freebytes = ((hvi->freebigblocks - hvi->rsvbigblocks) 124 << HAMMER_LARGEBLOCK_BITS); 125 126 fprintf(stdout, "\tNo. Inodes %10jd\n", (intmax_t)hvi->inodes); 127 humanize_number(buf, sizeof(buf) - (totalbytes < 0 ? 0 : 1), 128 totalbytes, "", HN_AUTOSCALE, HN_DECIMAL | HN_NOSPACE | HN_B); 129 fprintf(stdout, "\tTotal size %6s (%jd bytes)\n", 130 buf, (intmax_t)totalbytes); 131 132 humanize_number(buf, sizeof(buf) - (usedbytes < 0 ? 0 : 1), 133 usedbytes, "", HN_AUTOSCALE, HN_DECIMAL | HN_NOSPACE | HN_B); 134 fprintf(stdout, "\tUsed %6s (%.2lf%%)\n", buf, 135 percent(usedbytes, totalbytes)); 136 137 humanize_number(buf, sizeof(buf) - (rsvbytes < 0 ? 0 : 1), 138 rsvbytes, "", HN_AUTOSCALE, HN_DECIMAL | HN_NOSPACE | HN_B); 139 fprintf(stdout, "\tReserved %6s (%.2lf%%)\n", buf, 140 percent(rsvbytes, totalbytes)); 141 142 humanize_number(buf, sizeof(buf) - (freebytes < 0 ? 0 : 1), 143 freebytes, "", HN_AUTOSCALE, HN_DECIMAL | HN_NOSPACE | HN_B); 144 fprintf(stdout, "\tFree %6s (%.2lf%%)\n", buf, 145 percent(freebytes, totalbytes)); 146 147 /* Pseudo-filesystem information */ 148 fprintf(stdout, "PFS information\n"); 149 fprintf(stdout, "\tPFS ID Mode Snaps Mounted on\n"); 150 151 /* Iterate all the PFSs found */ 152 pi_first = libhammer_get_first_pfs(hvi); 153 for (pi = pi_first; pi != NULL; pi = libhammer_get_next_pfs(pi)) { 154 fprintf(stdout, "\t%6d %-6s", 155 pi->pfs_id, (pi->ismaster ? "MASTER" : "SLAVE")); 156 157 snprintf(buf, 6, "%d", pi->snapcount); 158 fprintf(stdout, " %6s ", (pi->head.error && pi->snapcount == 0) ? "-" : buf); 159 160 if (pi->mountedon) 161 fprintf(stdout, "%s", pi->mountedon); 162 else 163 fprintf(stdout, "not mounted"); 164 165 fprintf(stdout, "\n"); 166 } 167 168 free(fsid); 169 170 libhammer_free_volinfo(hvi); 171 172 } 173 174 static double 175 percent(int64_t value, int64_t total) 176 { 177 /* Avoid divide-by-zero */ 178 if (total == 0) 179 return 100.0; 180 181 return ((value * 100.0) / (double)total); 182 } 183