grub-core/normal/misc.c

   1 /* misc.c - miscellaneous functions */
   2 /*
   3  *  GRUB  --  GRand Unified Bootloader
   4  *  Copyright (C) 2005,2007,2008,2009  Free Software Foundation, Inc.
   5  *
   6  *  GRUB is free software: you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation, either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  GRUB is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include <grub/normal.h>
  21 #include <grub/disk.h>
  22 #include <grub/fs.h>
  23 #include <grub/err.h>
  24 #include <grub/misc.h>
  25 #include <grub/mm.h>
  26 #include <grub/datetime.h>
  27 #include <grub/term.h>
  28 #include <grub/i18n.h>
  29 #include <grub/partition.h>
  30
  31 static const char *grub_human_sizes[3][6] =
  32   {
  33     /* This algorithm in reality would work only up to (2^64) / 100 B = 81 PiB.
  34        Put here all possible suffixes it can produce so no array bounds check
  35        is needed.
  36      */
  37     /* TRANSLATORS: that's the list of binary unit prefixes.  */
  38     { N_("B"),   N_("KiB"),   N_("MiB"),   N_("GiB"),   N_("TiB"),   N_("PiB")},
  39     /* TRANSLATORS: that's the list of binary unit prefixes.  */
  40     {    "",     N_("K"),     N_("M"),     N_("G"),     N_("T"),     N_("P") },
  41     /* TRANSLATORS: that's the list of binary unit prefixes.  */
  42     { N_("B/s"), N_("KiB/s"), N_("MiB/s"), N_("GiB/s"), N_("TiB/s"), N_("PiB/s"),  },
  43   };
  44
  45 const char *
  46 grub_get_human_size (grub_uint64_t size, enum grub_human_size_type type)
  47 {
  48   grub_uint64_t fsize;
  49   unsigned units = 0;
  50   static char buf[30];
  51   const char *umsg;
  52
  53   if (type != GRUB_HUMAN_SIZE_SPEED)
  54     fsize = size * 100ULL;
  55   else
  56     fsize = size;
  57
  58   /* Since 2^64 / 1024^5  < 102400, this can give at most 5 iterations.
  59      So units <=5, so impossible to go past the end of array.
  60    */
  61   while (fsize >= 102400)
  62     {
  63       fsize = (fsize + 512) / 1024;
  64       units++;
  65     }
  66
  67   umsg = _(grub_human_sizes[type][units]);
  68
  69   if (units || type == GRUB_HUMAN_SIZE_SPEED)
  70     {
  71       grub_uint64_t whole, fraction;
  72
  73       whole = grub_divmod64 (fsize, 100, &fraction);
  74       grub_snprintf (buf, sizeof (buf),
  75                      "%" PRIuGRUB_UINT64_T
  76                      ".%02" PRIuGRUB_UINT64_T "%s", whole, fraction,
  77                      umsg);
  78     }
  79   else
  80     grub_snprintf (buf, sizeof (buf), "%llu%s", (unsigned long long) size,
  81                    umsg);
  82   return buf;
  83 }
  84
  85 /* Print the information on the device NAME.  */
  86 grub_err_t
  87 grub_normal_print_device_info (const char *name)
  88 {
  89   grub_device_t dev;
  90   char *p;
  91
  92   p = grub_strchr (name, ',');
  93   if (p)
  94     {
  95       grub_xputs ("\t");
  96       grub_printf_ (N_("Partition %s:"), name);
  97       grub_xputs (" ");
  98     }
  99   else
 100     {
 101       grub_printf_ (N_("Device %s:"), name);
 102       grub_xputs (" ");
 103     }
 104
 105   dev = grub_device_open (name);
 106   if (! dev)
 107     grub_printf ("%s", _("Filesystem cannot be accessed"));
 108   else if (dev->disk)
 109     {
 110       grub_fs_t fs;
 111
 112       fs = grub_fs_probe (dev);
 113       /* Ignore all errors.  */
 114       grub_errno = 0;
 115
 116       if (fs)
 117         {
 118           const char *fsname = fs->name;
 119           if (grub_strcmp (fsname, "ext2") == 0)
 120             fsname = "ext*";
 121           grub_printf_ (N_("Filesystem type %s"), fsname);
 122           if (fs->label)
 123             {
 124               char *label;
 125               (fs->label) (dev, &label);
 126               if (grub_errno == GRUB_ERR_NONE)
 127                 {
 128                   if (label && grub_strlen (label))
 129                     {
 130                       grub_xputs (" ");
 131                       grub_printf_ (N_("- Label `%s'"), label);
 132                     }
 133                   grub_free (label);
 134                 }
 135               grub_errno = GRUB_ERR_NONE;
 136             }
 137           if (fs->mtime)
 138             {
 139               grub_int32_t tm;
 140               struct grub_datetime datetime;
 141               (fs->mtime) (dev, &tm);
 142               if (grub_errno == GRUB_ERR_NONE)
 143                 {
 144                   grub_unixtime2datetime (tm, &datetime);
 145                   grub_xputs (" ");
 146                   /* TRANSLATORS: Arguments are year, month, day, hour, minute,
 147                      second, day of the week (translated).  */
 148                   grub_printf_ (N_("- Last modification time %d-%02d-%02d "
 149                                "%02d:%02d:%02d %s"),
 150                                datetime.year, datetime.month, datetime.day,
 151                                datetime.hour, datetime.minute, datetime.second,
 152                                grub_get_weekday_name (&datetime));
 153
 154                 }
 155               grub_errno = GRUB_ERR_NONE;
 156             }
 157           if (fs->uuid)
 158             {
 159               char *uuid;
 160               (fs->uuid) (dev, &uuid);
 161               if (grub_errno == GRUB_ERR_NONE)
 162                 {
 163                   if (uuid && grub_strlen (uuid))
 164                     grub_printf (", UUID %s", uuid);
 165                   grub_free (uuid);
 166                 }
 167               grub_errno = GRUB_ERR_NONE;
 168             }
 169         }
 170       else
 171         grub_printf ("%s", _("No known filesystem detected"));
 172
 173       if (dev->disk->partition)
 174         grub_printf (_(" - Partition start at %llu%sKiB"),
 175                      (unsigned long long) (grub_partition_get_start (dev->disk->partition) >> 1),
 176                      (grub_partition_get_start (dev->disk->partition) & 1) ? ".5" : "" );
 177       else
 178         grub_printf_ (N_(" - Sector size %uB"), 1 << dev->disk->log_sector_size);
 179       if (grub_disk_get_size (dev->disk) == GRUB_DISK_SIZE_UNKNOWN)
 180         grub_puts_ (N_(" - Total size unknown"));
 181       else
 182         grub_printf (_(" - Total size %llu%sKiB"),
 183                      (unsigned long long) (grub_disk_get_size (dev->disk) >> 1),
 184                      (grub_disk_get_size (dev->disk) & 1) ? ".5" : "");
 185
 186       grub_device_close (dev);
 187     }
 188
 189   grub_xputs ("\n");
 190   return grub_errno;
 191 }