system/modules/iso9660/rockridge.h

   1 /*
   2  * iso9660 - An iso9660 CDI driver with Rockridge support
   3  *
   4  * Copyright (C) 2008 Janosch Gräf
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the Free
   8  * Software Foundation; either version 3 of the License, or (at your option)
   9  * any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  14  * more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along with
  17  * this program; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #ifndef _ISO9660_ROCKRIDGE_H_
  21 #define _ISO9660_ROCKRIDGE_H_
  22
  23 #include <sys/types.h>
  24 #include <stdint.h>
  25
  26 #include "directory_record.h"
  27
  28 #define ISO9660_ROCKRIDGE_VERSION 1
  29
  30 #define ISO9660_ROCKRIDGE_SL_FLAG_LAST 1
  31
  32 #define ISO9660_ROCKRIDGE_NAMEFLAG_CONTINUE 1
  33 #define ISO9660_ROCKRIDGE_NAMEFLAG_CURRENT  2
  34 #define ISO9660_ROCKRIDGE_NAMEFLAG_PARENT   4
  35 #define ISO9660_ROCKRIDGE_NAMEFLAG_ROOT     8
  36
  37 #define ISO9660_ROCKRIDGE_TFFLAG_CREATION   1
  38 #define ISO9660_ROCKRIDGE_TFFLAG_MODIFY     2
  39 #define ISO9660_ROCKRIDGE_TFFLAG_ACCESS     4
  40 #define ISO9660_ROCKRIDGE_TFFLAG_ATTRIBUTES 8
  41 #define ISO9660_ROCKRIDGE_TFFLAG_BACKUP     16
  42 #define ISO9660_ROCKRIDGE_TFFLAG_EXPIRATION 32
  43 #define ISO9660_ROCKRIDGE_TFFLAG_EFFECTIVE  64
  44 #define ISO9660_ROCKRIDGE_TFFLAG_LONGFORM   128
  45
  46 #define ISO9660_ROCKRIDGE_SIG_SP ('S'|('P'<<8))
  47 #define ISO9660_ROCKRIDGE_SIG_ST ('S'|('T'<<8))
  48 #define ISO9660_ROCKRIDGE_SIG_RR ('R'|('R'<<8)) ///< @todo Actually the SUE must start with SP and not with RR
  49 #define ISO9660_ROCKRIDGE_SIG_PX ('P'|('X'<<8))
  50 #define ISO9660_ROCKRIDGE_SIG_PN ('P'|('N'<<8))
  51 #define ISO9660_ROCKRIDGE_SIG_SL ('S'|('L'<<8))
  52 #define ISO9660_ROCKRIDGE_SIG_NM ('N'|('M'<<8))
  53 #define ISO9660_ROCKRIDGE_SIG_CL ('C'|('L'<<8))
  54 #define ISO9660_ROCKRIDGE_SIG_PL ('P'|('L'<<8))
  55 #define ISO9660_ROCKRIDGE_SIG_RE ('R'|('E'<<8))
  56 #define ISO9660_ROCKRIDGE_SIG_RF ('R'|('F'<<8))
  57 #define ISO9660_ROCKRIDGE_SIG_SF ('S'|('F'<<8))
  58
  59 // Some POSIX stat stuff
  60
  61 #define RS_IFMT   00170000
  62 #define RS_IFSOCK 00140000
  63 #define RS_IFLNK  00120000
  64 #define RS_IFREG  00100000
  65 #define RS_IFBLK  00060000
  66 #define RS_IFDIR  00040000
  67 #define RS_IFCHR  00020000
  68 #define RS_IFIFO  00010000
  69
  70 #define RS_ISLNK(m)  (((m)&RS_IFMT)==RS_IFLNK)
  71 #define RS_ISREG(m)  (((m)&RS_IFMT)==RS_IFREG)
  72 #define RS_ISDIR(m)  (((m)&RS_IFMT)==RS_IFDIR)
  73 #define RS_ISCHR(m)  (((m)&RS_IFMT)==RS_IFCHR)
  74 #define RS_ISBLK(m)  (((m)&RS_IFMT)==RS_IFBLK)
  75 #define RS_ISFIFO(m) (((m)&RS_IFMT)==RS_IFIFO)
  76 #define RS_ISSOCK(m) (((m)&RS_IFMT)==RS_IFSOCK)
  77
  78 typedef unsigned int rmode_t;
  79
  80 // Rockridge System Use Entry
  81 struct iso9660_rockridge {
  82   // Field signature
  83   uint16_t sig;
  84
  85   // Size of field
  86   uint8_t size;
  87
  88   // Version
  89   uint8_t version;
  90 } __attribute__ ((packed));
  91
  92 /// @todo Actually the SUE must start with SP and not with RR
  93 struct iso9660_rockridge_rr {
  94   // Size: 5
  95   struct iso9660_rockridge header;
  96   uint8_t unknown;
  97 } __attribute__ ((packed));
  98
  99 // Rockridge System Use Entry for file permissions
 100 struct iso9660_rockridge_px {
 101   // Size: 44
 102   struct iso9660_rockridge header;
 103
 104   // File mode (like in sys/stat.h)
 105   uint32_t mode;
 106   uint32_t mode_be;
 107
 108   // Number of links (like in sys/stat.h)
 109   uint32_t nlink;
 110   uint32_t nlink_be;
 111
 112   // Owner UID
 113   uint32_t uid;
 114   uint32_t uid_be;
 115
 116   // Owner GID
 117   uint32_t gid;
 118   uint32_t gid_be;
 119
 120   // File serial number
 121   uint32_t serial;
 122   uint32_t serial_be;
 123 } __attribute__ ((packed));
 124
 125 // Rockridge System Use Entry for device nodes
 126 struct iso9660_rockridge_pn {
 127   // Size: 20
 128   struct iso9660_rockridge header;
 129
 130   // Device number
 131   uint32_t devhi;
 132   uint32_t devhi_be;
 133   uint32_t devlo;
 134   uint32_t devlo_be;
 135 } __attribute__ ((packed));
 136
 137 // Rockridge SL Component
 138 struct iso9660_rockridge_sl_component {
 139   uint8_t flags;
 140   uint8_t len;
 141   uint8_t content[0];
 142 } __attribute__ ((packed));
 143
 144 // Rockridge System Use Entry for symbolic links
 145 struct iso9660_rockridge_sl {
 146   // Size:
 147   struct iso9660_rockridge header;
 148
 149   // Flags
 150   uint8_t flags;
 151
 152   // Component Area
 153   struct iso9660_rockridge_sl_component component_area[0];
 154 } __attribute__ ((packed));
 155
 156 // Rockridge System Use Entry for POSIX names
 157 struct iso9660_rockridge_nm {
 158   // Size:
 159   struct iso9660_rockridge header;
 160
 161   // Flags
 162   uint8_t flags;
 163
 164   // Name content
 165   uint8_t name[1];
 166 } __attribute__ ((packed));
 167
 168 // Rockridge System Use Entry for timestamps
 169 struct iso9660_rockridge_tf {
 170   // Size:
 171   struct iso9660_rockridge header;
 172
 173   // Flags (Type of timestamp
 174   uint8_t flags;
 175
 176   uint32_t timestamps[0];
 177 } __attribute__ ((packed));
 178
 179 int iso9660_rockridge_scan(struct iso9660_dirrec *dirrec,char **_name,mode_t *mode,uid_t *uid,gid_t *gid,nlink_t *nlink,uint64_t *atime,uint64_t *ctime,uint64_t *mtime);
 180
 181 #endif