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