cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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iso_fs.h (6485B)

      1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
      2#ifndef _ISOFS_FS_H
      3#define _ISOFS_FS_H
      4
      5#include <linux/types.h>
      6#include <linux/magic.h>
      7
      8/*
      9 * The isofs filesystem constants/structures
     10 */
     11
     12/* This part borrowed from the bsd386 isofs */
     13#define ISODCL(from, to) (to - from + 1)
     14
     15struct iso_volume_descriptor {
     16	__u8 type[ISODCL(1,1)]; /* 711 */
     17	char id[ISODCL(2,6)];
     18	__u8 version[ISODCL(7,7)];
     19	__u8 data[ISODCL(8,2048)];
     20};
     21
     22/* volume descriptor types */
     23#define ISO_VD_PRIMARY 1
     24#define ISO_VD_SUPPLEMENTARY 2
     25#define ISO_VD_END 255
     26
     27#define ISO_STANDARD_ID "CD001"
     28
     29struct iso_primary_descriptor {
     30	__u8 type			[ISODCL (  1,   1)]; /* 711 */
     31	char id				[ISODCL (  2,   6)];
     32	__u8 version			[ISODCL (  7,   7)]; /* 711 */
     33	__u8 unused1			[ISODCL (  8,   8)];
     34	char system_id			[ISODCL (  9,  40)]; /* achars */
     35	char volume_id			[ISODCL ( 41,  72)]; /* dchars */
     36	__u8 unused2			[ISODCL ( 73,  80)];
     37	__u8 volume_space_size		[ISODCL ( 81,  88)]; /* 733 */
     38	__u8 unused3			[ISODCL ( 89, 120)];
     39	__u8 volume_set_size		[ISODCL (121, 124)]; /* 723 */
     40	__u8 volume_sequence_number	[ISODCL (125, 128)]; /* 723 */
     41	__u8 logical_block_size		[ISODCL (129, 132)]; /* 723 */
     42	__u8 path_table_size		[ISODCL (133, 140)]; /* 733 */
     43	__u8 type_l_path_table		[ISODCL (141, 144)]; /* 731 */
     44	__u8 opt_type_l_path_table	[ISODCL (145, 148)]; /* 731 */
     45	__u8 type_m_path_table		[ISODCL (149, 152)]; /* 732 */
     46	__u8 opt_type_m_path_table	[ISODCL (153, 156)]; /* 732 */
     47	__u8 root_directory_record	[ISODCL (157, 190)]; /* 9.1 */
     48	char volume_set_id		[ISODCL (191, 318)]; /* dchars */
     49	char publisher_id		[ISODCL (319, 446)]; /* achars */
     50	char preparer_id		[ISODCL (447, 574)]; /* achars */
     51	char application_id		[ISODCL (575, 702)]; /* achars */
     52	char copyright_file_id		[ISODCL (703, 739)]; /* 7.5 dchars */
     53	char abstract_file_id		[ISODCL (740, 776)]; /* 7.5 dchars */
     54	char bibliographic_file_id	[ISODCL (777, 813)]; /* 7.5 dchars */
     55	__u8 creation_date		[ISODCL (814, 830)]; /* 8.4.26.1 */
     56	__u8 modification_date		[ISODCL (831, 847)]; /* 8.4.26.1 */
     57	__u8 expiration_date		[ISODCL (848, 864)]; /* 8.4.26.1 */
     58	__u8 effective_date		[ISODCL (865, 881)]; /* 8.4.26.1 */
     59	__u8 file_structure_version	[ISODCL (882, 882)]; /* 711 */
     60	__u8 unused4			[ISODCL (883, 883)];
     61	__u8 application_data		[ISODCL (884, 1395)];
     62	__u8 unused5			[ISODCL (1396, 2048)];
     63};
     64
     65/* Almost the same as the primary descriptor but two fields are specified */
     66struct iso_supplementary_descriptor {
     67	__u8 type			[ISODCL (  1,   1)]; /* 711 */
     68	char id				[ISODCL (  2,   6)];
     69	__u8 version			[ISODCL (  7,   7)]; /* 711 */
     70	__u8 flags			[ISODCL (  8,   8)]; /* 853 */
     71	char system_id			[ISODCL (  9,  40)]; /* achars */
     72	char volume_id			[ISODCL ( 41,  72)]; /* dchars */
     73	__u8 unused2			[ISODCL ( 73,  80)];
     74	__u8 volume_space_size		[ISODCL ( 81,  88)]; /* 733 */
     75	__u8 escape			[ISODCL ( 89, 120)]; /* 856 */
     76	__u8 volume_set_size		[ISODCL (121, 124)]; /* 723 */
     77	__u8 volume_sequence_number	[ISODCL (125, 128)]; /* 723 */
     78	__u8 logical_block_size		[ISODCL (129, 132)]; /* 723 */
     79	__u8 path_table_size		[ISODCL (133, 140)]; /* 733 */
     80	__u8 type_l_path_table		[ISODCL (141, 144)]; /* 731 */
     81	__u8 opt_type_l_path_table	[ISODCL (145, 148)]; /* 731 */
     82	__u8 type_m_path_table		[ISODCL (149, 152)]; /* 732 */
     83	__u8 opt_type_m_path_table	[ISODCL (153, 156)]; /* 732 */
     84	__u8 root_directory_record	[ISODCL (157, 190)]; /* 9.1 */
     85	char volume_set_id		[ISODCL (191, 318)]; /* dchars */
     86	char publisher_id		[ISODCL (319, 446)]; /* achars */
     87	char preparer_id		[ISODCL (447, 574)]; /* achars */
     88	char application_id		[ISODCL (575, 702)]; /* achars */
     89	char copyright_file_id		[ISODCL (703, 739)]; /* 7.5 dchars */
     90	char abstract_file_id		[ISODCL (740, 776)]; /* 7.5 dchars */
     91	char bibliographic_file_id	[ISODCL (777, 813)]; /* 7.5 dchars */
     92	__u8 creation_date		[ISODCL (814, 830)]; /* 8.4.26.1 */
     93	__u8 modification_date		[ISODCL (831, 847)]; /* 8.4.26.1 */
     94	__u8 expiration_date		[ISODCL (848, 864)]; /* 8.4.26.1 */
     95	__u8 effective_date		[ISODCL (865, 881)]; /* 8.4.26.1 */
     96	__u8 file_structure_version	[ISODCL (882, 882)]; /* 711 */
     97	__u8 unused4			[ISODCL (883, 883)];
     98	__u8 application_data		[ISODCL (884, 1395)];
     99	__u8 unused5			[ISODCL (1396, 2048)];
    100};
    101
    102
    103#define HS_STANDARD_ID "CDROM"
    104
    105struct  hs_volume_descriptor {
    106	__u8 foo			[ISODCL (  1,   8)]; /* 733 */
    107	__u8 type			[ISODCL (  9,   9)]; /* 711 */
    108	char id				[ISODCL ( 10,  14)];
    109	__u8 version			[ISODCL ( 15,  15)]; /* 711 */
    110	__u8 data[ISODCL(16,2048)];
    111};
    112
    113
    114struct hs_primary_descriptor {
    115	__u8 foo			[ISODCL (  1,   8)]; /* 733 */
    116	__u8 type			[ISODCL (  9,   9)]; /* 711 */
    117	__u8 id				[ISODCL ( 10,  14)];
    118	__u8 version			[ISODCL ( 15,  15)]; /* 711 */
    119	__u8 unused1			[ISODCL ( 16,  16)]; /* 711 */
    120	char system_id			[ISODCL ( 17,  48)]; /* achars */
    121	char volume_id			[ISODCL ( 49,  80)]; /* dchars */
    122	__u8 unused2			[ISODCL ( 81,  88)]; /* 733 */
    123	__u8 volume_space_size		[ISODCL ( 89,  96)]; /* 733 */
    124	__u8 unused3			[ISODCL ( 97, 128)]; /* 733 */
    125	__u8 volume_set_size		[ISODCL (129, 132)]; /* 723 */
    126	__u8 volume_sequence_number	[ISODCL (133, 136)]; /* 723 */
    127	__u8 logical_block_size		[ISODCL (137, 140)]; /* 723 */
    128	__u8 path_table_size		[ISODCL (141, 148)]; /* 733 */
    129	__u8 type_l_path_table		[ISODCL (149, 152)]; /* 731 */
    130	__u8 unused4			[ISODCL (153, 180)]; /* 733 */
    131	__u8 root_directory_record	[ISODCL (181, 214)]; /* 9.1 */
    132};
    133
    134/* We use this to help us look up the parent inode numbers. */
    135
    136struct iso_path_table{
    137	__u8  name_len[2];	/* 721 */
    138	__u8  extent[4];	/* 731 */
    139	__u8  parent[2];	/* 721 */
    140	char name[0];
    141} __attribute__((packed));
    142
    143/* high sierra is identical to iso, except that the date is only 6 bytes, and
    144   there is an extra reserved byte after the flags */
    145
    146struct iso_directory_record {
    147	__u8 length			[ISODCL (1, 1)]; /* 711 */
    148	__u8 ext_attr_length		[ISODCL (2, 2)]; /* 711 */
    149	__u8 extent			[ISODCL (3, 10)]; /* 733 */
    150	__u8 size			[ISODCL (11, 18)]; /* 733 */
    151	__u8 date			[ISODCL (19, 25)]; /* 7 by 711 */
    152	__u8 flags			[ISODCL (26, 26)];
    153	__u8 file_unit_size		[ISODCL (27, 27)]; /* 711 */
    154	__u8 interleave			[ISODCL (28, 28)]; /* 711 */
    155	__u8 volume_sequence_number	[ISODCL (29, 32)]; /* 723 */
    156	__u8 name_len			[ISODCL (33, 33)]; /* 711 */
    157	char name			[0];
    158} __attribute__((packed));
    159
    160#define ISOFS_BLOCK_BITS 11
    161#define ISOFS_BLOCK_SIZE 2048
    162
    163#define ISOFS_BUFFER_SIZE(INODE) ((INODE)->i_sb->s_blocksize)
    164#define ISOFS_BUFFER_BITS(INODE) ((INODE)->i_sb->s_blocksize_bits)
    165
    166#endif /* _ISOFS_FS_H */