granicus.if.org Git - strace/blob - ubi.c

   1 /*
   2  * Copyright (c) 2012 Mike Frysinger <vapier@gentoo.org>
   3  * Copyright (c) 2012-2017 The strace developers.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. The name of the author may not be used to endorse or promote products
  14  *    derived from this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 #include "defs.h"
  29
  30 #include <linux/ioctl.h>
  31
  32 /* The UBI api changes, so we have to keep a local copy */
  33 #include <linux/version.h>
  34 #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 7, 0)
  35 # include "ubi-user.h"
  36 #else
  37 # include <mtd/ubi-user.h>
  38 #endif
  39
  40 #include "xlat/ubi_volume_types.h"
  41 #include "xlat/ubi_volume_props.h"
  42
  43 int
  44 ubi_ioctl(struct tcb *const tcp, const unsigned int code,
  45           const kernel_ulong_t arg)
  46 {
  47         if (!verbose(tcp))
  48                 return RVAL_DECODED;
  49
  50         switch (code) {
  51         case UBI_IOCMKVOL:
  52                 if (entering(tcp)) {
  53                         struct ubi_mkvol_req mkvol;
  54
  55                         tprints(", ");
  56                         if (umove_or_printaddr(tcp, arg, &mkvol))
  57                                 break;
  58
  59                         tprintf("{vol_id=%" PRIi32 ", alignment=%" PRIi32
  60                                 ", bytes=%" PRIi64 ", vol_type=", mkvol.vol_id,
  61                                 mkvol.alignment, (int64_t)mkvol.bytes);
  62                         printxval(ubi_volume_types,
  63                                     (uint8_t) mkvol.vol_type, "UBI_???_VOLUME");
  64                         tprintf(", name_len=%" PRIi16 ", name=",
  65                                 mkvol.name_len);
  66                         print_quoted_cstring(mkvol.name,
  67                                         CLAMP(mkvol.name_len, 0,
  68                                               UBI_MAX_VOLUME_NAME));
  69                         tprints("}");
  70                         return 0;
  71                 }
  72                 if (!syserror(tcp)) {
  73                         tprints(" => ");
  74                         printnum_int(tcp, arg, "%d");
  75                 }
  76                 break;
  77
  78         case UBI_IOCRSVOL: {
  79                 struct ubi_rsvol_req rsvol;
  80
  81                 tprints(", ");
  82                 if (umove_or_printaddr(tcp, arg, &rsvol))
  83                         break;
  84
  85                 tprintf("{vol_id=%" PRIi32 ", bytes=%" PRIi64 "}",
  86                         rsvol.vol_id, (int64_t)rsvol.bytes);
  87                 break;
  88         }
  89
  90         case UBI_IOCRNVOL: {
  91                 struct ubi_rnvol_req rnvol;
  92                 int c;
  93
  94                 tprints(", ");
  95                 if (umove_or_printaddr(tcp, arg, &rnvol))
  96                         break;
  97
  98                 tprintf("{count=%" PRIi32 ", ents=[", rnvol.count);
  99                 for (c = 0; c < CLAMP(rnvol.count, 0, UBI_MAX_RNVOL); ++c) {
 100                         if (c)
 101                                 tprints(", ");
 102                         tprintf("{vol_id=%" PRIi32 ", name_len=%" PRIi16
 103                                 ", name=", rnvol.ents[c].vol_id,
 104                                 rnvol.ents[c].name_len);
 105                         print_quoted_cstring(rnvol.ents[c].name,
 106                                         CLAMP(rnvol.ents[c].name_len, 0,
 107                                               UBI_MAX_VOLUME_NAME));
 108                         tprints("}");
 109                 }
 110                 tprints("]}");
 111                 break;
 112         }
 113
 114         case UBI_IOCEBCH: {
 115                 struct ubi_leb_change_req leb;
 116
 117                 tprints(", ");
 118                 if (umove_or_printaddr(tcp, arg, &leb))
 119                         break;
 120
 121                 tprintf("{lnum=%d, bytes=%d}", leb.lnum, leb.bytes);
 122                 break;
 123         }
 124
 125         case UBI_IOCATT:
 126                 if (entering(tcp)) {
 127                         struct ubi_attach_req attach;
 128
 129                         tprints(", ");
 130                         if (umove_or_printaddr(tcp, arg, &attach))
 131                                 break;
 132
 133                         tprintf("{ubi_num=%" PRIi32 ", mtd_num=%" PRIi32
 134                                 ", vid_hdr_offset=%" PRIi32
 135                                 ", max_beb_per1024=%" PRIi16 "}",
 136                                 attach.ubi_num, attach.mtd_num,
 137                                 attach.vid_hdr_offset, attach.max_beb_per1024);
 138                         return 0;
 139                 }
 140                 if (!syserror(tcp)) {
 141                         tprints(" => ");
 142                         printnum_int(tcp, arg, "%d");
 143                 }
 144                 break;
 145
 146         case UBI_IOCEBMAP: {
 147                 struct ubi_map_req map;
 148
 149                 tprints(", ");
 150                 if (umove_or_printaddr(tcp, arg, &map))
 151                         break;
 152
 153                 tprintf("{lnum=%" PRIi32 ", dtype=%" PRIi8 "}",
 154                         map.lnum, map.dtype);
 155                 break;
 156         }
 157
 158         case UBI_IOCSETVOLPROP: {
 159                 struct ubi_set_vol_prop_req prop;
 160
 161                 tprints(", ");
 162                 if (umove_or_printaddr(tcp, arg, &prop))
 163                         break;
 164
 165                 tprints("{property=");
 166                 printxval(ubi_volume_props, prop.property, "UBI_VOL_PROP_???");
 167                 tprintf(", value=%#" PRIx64 "}", (uint64_t)prop.value);
 168                 break;
 169         }
 170
 171
 172         case UBI_IOCVOLUP:
 173                 tprints(", ");
 174                 printnum_int64(tcp, arg, "%" PRIi64);
 175                 break;
 176
 177         case UBI_IOCDET:
 178         case UBI_IOCEBER:
 179         case UBI_IOCEBISMAP:
 180         case UBI_IOCEBUNMAP:
 181         case UBI_IOCRMVOL:
 182                 tprints(", ");
 183                 printnum_int(tcp, arg, "%d");
 184                 break;
 185
 186 #ifdef UBI_IOCVOLCRBLK
 187         case UBI_IOCVOLCRBLK:
 188 #endif
 189 #ifdef UBI_IOCVOLRMBLK
 190         case UBI_IOCVOLRMBLK:
 191 #endif
 192                 /* no arguments */
 193                 break;
 194
 195         default:
 196                 return RVAL_DECODED;
 197         }
 198
 199         return RVAL_IOCTL_DECODED;
 200 }