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 1.2 2007/05/16 05:20:10 dillon Exp $
  35  */
  36
  37 #define DKTYPENAMES
  38 #include <sys/types.h>
  39 #include <sys/fcntl.h>
  40 #include <sys/disklabel.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
  48 static int quietMode;
  49 static int extendedMode;
  50
  51 static void dumppart(const char *path, struct partinfo *dpart);
  52 static void usage(const char *av0);
  53
  54 int
  55 main(int ac, char **av)
  56 {
  57         struct partinfo dpart;
  58         int i;
  59         int ch;
  60         int fd;
  61
  62         while ((ch = getopt(ac, av, "qx")) != -1) {
  63                 switch(ch) {
  64                 case 'q':
  65                         quietMode = 1;
  66                         break;
  67                 case 'x':
  68                         extendedMode = 1;
  69                         break;
  70                 default:
  71                         usage(av[0]);
  72                 }
  73         }
  74         for (i = optind; i < ac; ++i) {
  75                 if ((fd = open(av[i], O_RDONLY)) < 0) {
  76                         if (errno != ENXIO || quietMode == 0)
  77                                 printf("%-16s %s\n", av[i], strerror(errno));
  78                         continue;
  79                 }
  80                 bzero(&dpart, sizeof(dpart));
  81                 if (ioctl(fd, DIOCGPART, &dpart) < 0) {
  82                         printf("%-16s %s\n", av[i], strerror(errno));
  83                 } else if (dpart.media_size == 0 && dpart.fstype == 0 &&
  84                            dpart.fstypestr[0] == 0) {
  85                         if (quietMode == 0)
  86                                 printf("%-16s unused\n", av[i]);
  87                 } else {
  88                         dumppart(av[i], &dpart);
  89                 }
  90                 close(fd);
  91         }
  92         return(0);
  93 }
  94
  95 static
  96 void
  97 dumppart(const char *path, struct partinfo *dpart)
  98 {
  99         printf("%-16s ", path);
 100         printf("blksize=%-4d off=%012llx size=%012llx ",
 101                 dpart->media_blksize,
 102                 dpart->media_offset,
 103                 dpart->media_size
 104         );
 105         if (dpart->media_size >= 100LL*1024*1024*1024) {
 106                 printf("%7.2f GB",
 107                         (double)dpart->media_size /
 108                         (1024.0*1024.0*1024.0)
 109                 );
 110         } else if (dpart->media_size >= 1024*1024) {
 111                 printf("%7.2f MB",
 112                         (double)dpart->media_size /
 113                         (1024.0*1024.0)
 114                 );
 115         } else {
 116                 printf("%7.2f KB",
 117                         (double)dpart->media_size / 1024.0
 118                 );
 119         }
 120         if (extendedMode) {
 121                 if (dpart->fstypestr[0]) {
 122                         printf(" fs=%s", dpart->fstypestr);
 123                 } else if (dpart->fstype) {
 124                         printf(" fs=");
 125                         if (dpart->fstype < 0 ||
 126                             dpart->fstype >= (int)FSMAXTYPES) {
 127                                 printf("%d", dpart->fstype);
 128                         } else {
 129                                 printf("%s", fstypenames[dpart->fstype]);
 130                         }
 131                 }
 132                 if (dpart->skip_platform || dpart->skip_bsdlabel) {
 133                         /*
 134                          * note: rsvdlabel is inclusive of rsvdplat. i.e.
 135                          * they are not relative to each other.
 136                          */
 137                         printf(" rsvdplat=%d rsvdlabel=%d",
 138                                 dpart->skip_platform, dpart->skip_bsdlabel);
 139                 }
 140         }
 141         printf("\n");
 142 }
 143
 144 static
 145 void
 146 usage(const char *av0)
 147 {
 148         fprintf(stderr, "%s [-q] [devices....]\n", av0);
 149         exit(1);
 150 }
 151