sbin/diskinfo/diskinfo.c

   1 /*
   2  * Copyright (c) 2007 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/diskinfo/diskinfo.c,v 1.6 2007/06/27 18:15:57 dillon Exp $
  35  */
  36
  37 #define DKTYPENAMES
  38 #include <sys/types.h>
  39 #include <sys/fcntl.h>
  40 #include <sys/dtype.h>
  41 #include <sys/diskslice.h>
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <unistd.h>
  45 #include <errno.h>
  46 #include <string.h>
  47 #include <uuid.h>
  48
  49 static int quietMode;
  50 static int extendedMode;
  51
  52 static void dumppart(const char *path, struct partinfo *dpart);
  53 static void usage(const char *av0);
  54
  55 int
  56 main(int ac, char **av)
  57 {
  58         struct partinfo dpart;
  59         int i;
  60         int ch;
  61         int fd;
  62
  63         while ((ch = getopt(ac, av, "qx")) != -1) {
  64                 switch(ch) {
  65                 case 'q':
  66                         quietMode = 1;
  67                         break;
  68                 case 'x':
  69                         extendedMode = 1;
  70                         break;
  71                 default:
  72                         usage(av[0]);
  73                 }
  74         }
  75         for (i = optind; i < ac; ++i) {
  76                 if ((fd = open(av[i], O_RDONLY)) < 0) {
  77                         if (errno != ENXIO || quietMode == 0)
  78                                 printf("%-16s %s\n", av[i], strerror(errno));
  79                         continue;
  80                 }
  81                 bzero(&dpart, sizeof(dpart));
  82                 if (ioctl(fd, DIOCGPART, &dpart) < 0) {
  83                         printf("%-16s %s\n", av[i], strerror(errno));
  84                 } else if (dpart.media_size == 0 && dpart.fstype == 0 &&
  85                            uuid_is_nil(&dpart.fstype_uuid, NULL)) {
  86                         if (quietMode == 0)
  87                                 printf("%-16s unused\n", av[i]);
  88                 } else {
  89                         dumppart(av[i], &dpart);
  90                 }
  91                 close(fd);
  92         }
  93         return(0);
  94 }
  95
  96 static
  97 void
  98 dumppart(const char *path, struct partinfo *dpart)
  99 {
 100         printf("%-16s ", path);
 101         printf("blksize=%-4d off=%012llx size=%012llx ",
 102                 dpart->media_blksize,
 103                 dpart->media_offset,
 104                 dpart->media_size
 105         );
 106         if (dpart->media_size >= 100LL*1024*1024*1024) {
 107                 printf("%7.2f GB",
 108                         (double)dpart->media_size /
 109                         (1024.0*1024.0*1024.0)
 110                 );
 111         } else if (dpart->media_size >= 1024*1024) {
 112                 printf("%7.2f MB",
 113                         (double)dpart->media_size /
 114                         (1024.0*1024.0)
 115                 );
 116         } else {
 117                 printf("%7.2f KB",
 118                         (double)dpart->media_size / 1024.0
 119                 );
 120         }
 121         if (extendedMode) {
 122                 if (!uuid_is_nil(&dpart->fstype_uuid, NULL)) {
 123                         char *str;
 124                         uuid_addr_lookup(&dpart->fstype_uuid, &str, NULL);
 125                         if (str == NULL)
 126                                 uuid_to_string(&dpart->fstype_uuid, &str, NULL);
 127                         printf(" fstype='%s'", str ? str : "<illegal>");
 128                 }
 129                 if (dpart->fstype) {
 130                         printf(" ofstype=");
 131                         if (dpart->fstype < 0 ||
 132                             dpart->fstype >= (int)FSMAXTYPES) {
 133                                 printf("%d", dpart->fstype);
 134                         } else {
 135                                 printf("%s", fstypenames[dpart->fstype]);
 136                         }
 137                 }
 138                 if (!uuid_is_nil(&dpart->storage_uuid, NULL)) {
 139                         char *str = NULL;
 140                         uuid_to_string(&dpart->storage_uuid, &str, NULL);
 141                         printf(" storage_uuid='%s'", str ? str : "<illegal>");
 142                 }
 143                 if (dpart->reserved_blocks) {
 144                         /*
 145                          * note: rsvdlabel is inclusive of rsvdplat. i.e.
 146                          * they are not relative to each other.
 147                          */
 148                         printf(" reserved=%lld", dpart->reserved_blocks);
 149                 }
 150         }
 151         printf("\n");
 152 }
 153
 154 static
 155 void
 156 usage(const char *av0)
 157 {
 158         fprintf(stderr, "%s [-q] [devices....]\n", av0);
 159         exit(1);
 160 }
 161