1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2*4882a593Smuzhiyun #ifndef _ISOFS_FS_H 3*4882a593Smuzhiyun #define _ISOFS_FS_H 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun #include <linux/types.h> 6*4882a593Smuzhiyun #include <linux/magic.h> 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun /* 9*4882a593Smuzhiyun * The isofs filesystem constants/structures 10*4882a593Smuzhiyun */ 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun /* This part borrowed from the bsd386 isofs */ 13*4882a593Smuzhiyun #define ISODCL(from, to) (to - from + 1) 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun struct iso_volume_descriptor { 16*4882a593Smuzhiyun __u8 type[ISODCL(1,1)]; /* 711 */ 17*4882a593Smuzhiyun char id[ISODCL(2,6)]; 18*4882a593Smuzhiyun __u8 version[ISODCL(7,7)]; 19*4882a593Smuzhiyun __u8 data[ISODCL(8,2048)]; 20*4882a593Smuzhiyun }; 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun /* volume descriptor types */ 23*4882a593Smuzhiyun #define ISO_VD_PRIMARY 1 24*4882a593Smuzhiyun #define ISO_VD_SUPPLEMENTARY 2 25*4882a593Smuzhiyun #define ISO_VD_END 255 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun #define ISO_STANDARD_ID "CD001" 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun struct iso_primary_descriptor { 30*4882a593Smuzhiyun __u8 type [ISODCL ( 1, 1)]; /* 711 */ 31*4882a593Smuzhiyun char id [ISODCL ( 2, 6)]; 32*4882a593Smuzhiyun __u8 version [ISODCL ( 7, 7)]; /* 711 */ 33*4882a593Smuzhiyun __u8 unused1 [ISODCL ( 8, 8)]; 34*4882a593Smuzhiyun char system_id [ISODCL ( 9, 40)]; /* achars */ 35*4882a593Smuzhiyun char volume_id [ISODCL ( 41, 72)]; /* dchars */ 36*4882a593Smuzhiyun __u8 unused2 [ISODCL ( 73, 80)]; 37*4882a593Smuzhiyun __u8 volume_space_size [ISODCL ( 81, 88)]; /* 733 */ 38*4882a593Smuzhiyun __u8 unused3 [ISODCL ( 89, 120)]; 39*4882a593Smuzhiyun __u8 volume_set_size [ISODCL (121, 124)]; /* 723 */ 40*4882a593Smuzhiyun __u8 volume_sequence_number [ISODCL (125, 128)]; /* 723 */ 41*4882a593Smuzhiyun __u8 logical_block_size [ISODCL (129, 132)]; /* 723 */ 42*4882a593Smuzhiyun __u8 path_table_size [ISODCL (133, 140)]; /* 733 */ 43*4882a593Smuzhiyun __u8 type_l_path_table [ISODCL (141, 144)]; /* 731 */ 44*4882a593Smuzhiyun __u8 opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */ 45*4882a593Smuzhiyun __u8 type_m_path_table [ISODCL (149, 152)]; /* 732 */ 46*4882a593Smuzhiyun __u8 opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */ 47*4882a593Smuzhiyun __u8 root_directory_record [ISODCL (157, 190)]; /* 9.1 */ 48*4882a593Smuzhiyun char volume_set_id [ISODCL (191, 318)]; /* dchars */ 49*4882a593Smuzhiyun char publisher_id [ISODCL (319, 446)]; /* achars */ 50*4882a593Smuzhiyun char preparer_id [ISODCL (447, 574)]; /* achars */ 51*4882a593Smuzhiyun char application_id [ISODCL (575, 702)]; /* achars */ 52*4882a593Smuzhiyun char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */ 53*4882a593Smuzhiyun char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */ 54*4882a593Smuzhiyun char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */ 55*4882a593Smuzhiyun __u8 creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */ 56*4882a593Smuzhiyun __u8 modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */ 57*4882a593Smuzhiyun __u8 expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */ 58*4882a593Smuzhiyun __u8 effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */ 59*4882a593Smuzhiyun __u8 file_structure_version [ISODCL (882, 882)]; /* 711 */ 60*4882a593Smuzhiyun __u8 unused4 [ISODCL (883, 883)]; 61*4882a593Smuzhiyun __u8 application_data [ISODCL (884, 1395)]; 62*4882a593Smuzhiyun __u8 unused5 [ISODCL (1396, 2048)]; 63*4882a593Smuzhiyun }; 64*4882a593Smuzhiyun 65*4882a593Smuzhiyun /* Almost the same as the primary descriptor but two fields are specified */ 66*4882a593Smuzhiyun struct iso_supplementary_descriptor { 67*4882a593Smuzhiyun __u8 type [ISODCL ( 1, 1)]; /* 711 */ 68*4882a593Smuzhiyun char id [ISODCL ( 2, 6)]; 69*4882a593Smuzhiyun __u8 version [ISODCL ( 7, 7)]; /* 711 */ 70*4882a593Smuzhiyun __u8 flags [ISODCL ( 8, 8)]; /* 853 */ 71*4882a593Smuzhiyun char system_id [ISODCL ( 9, 40)]; /* achars */ 72*4882a593Smuzhiyun char volume_id [ISODCL ( 41, 72)]; /* dchars */ 73*4882a593Smuzhiyun __u8 unused2 [ISODCL ( 73, 80)]; 74*4882a593Smuzhiyun __u8 volume_space_size [ISODCL ( 81, 88)]; /* 733 */ 75*4882a593Smuzhiyun __u8 escape [ISODCL ( 89, 120)]; /* 856 */ 76*4882a593Smuzhiyun __u8 volume_set_size [ISODCL (121, 124)]; /* 723 */ 77*4882a593Smuzhiyun __u8 volume_sequence_number [ISODCL (125, 128)]; /* 723 */ 78*4882a593Smuzhiyun __u8 logical_block_size [ISODCL (129, 132)]; /* 723 */ 79*4882a593Smuzhiyun __u8 path_table_size [ISODCL (133, 140)]; /* 733 */ 80*4882a593Smuzhiyun __u8 type_l_path_table [ISODCL (141, 144)]; /* 731 */ 81*4882a593Smuzhiyun __u8 opt_type_l_path_table [ISODCL (145, 148)]; /* 731 */ 82*4882a593Smuzhiyun __u8 type_m_path_table [ISODCL (149, 152)]; /* 732 */ 83*4882a593Smuzhiyun __u8 opt_type_m_path_table [ISODCL (153, 156)]; /* 732 */ 84*4882a593Smuzhiyun __u8 root_directory_record [ISODCL (157, 190)]; /* 9.1 */ 85*4882a593Smuzhiyun char volume_set_id [ISODCL (191, 318)]; /* dchars */ 86*4882a593Smuzhiyun char publisher_id [ISODCL (319, 446)]; /* achars */ 87*4882a593Smuzhiyun char preparer_id [ISODCL (447, 574)]; /* achars */ 88*4882a593Smuzhiyun char application_id [ISODCL (575, 702)]; /* achars */ 89*4882a593Smuzhiyun char copyright_file_id [ISODCL (703, 739)]; /* 7.5 dchars */ 90*4882a593Smuzhiyun char abstract_file_id [ISODCL (740, 776)]; /* 7.5 dchars */ 91*4882a593Smuzhiyun char bibliographic_file_id [ISODCL (777, 813)]; /* 7.5 dchars */ 92*4882a593Smuzhiyun __u8 creation_date [ISODCL (814, 830)]; /* 8.4.26.1 */ 93*4882a593Smuzhiyun __u8 modification_date [ISODCL (831, 847)]; /* 8.4.26.1 */ 94*4882a593Smuzhiyun __u8 expiration_date [ISODCL (848, 864)]; /* 8.4.26.1 */ 95*4882a593Smuzhiyun __u8 effective_date [ISODCL (865, 881)]; /* 8.4.26.1 */ 96*4882a593Smuzhiyun __u8 file_structure_version [ISODCL (882, 882)]; /* 711 */ 97*4882a593Smuzhiyun __u8 unused4 [ISODCL (883, 883)]; 98*4882a593Smuzhiyun __u8 application_data [ISODCL (884, 1395)]; 99*4882a593Smuzhiyun __u8 unused5 [ISODCL (1396, 2048)]; 100*4882a593Smuzhiyun }; 101*4882a593Smuzhiyun 102*4882a593Smuzhiyun 103*4882a593Smuzhiyun #define HS_STANDARD_ID "CDROM" 104*4882a593Smuzhiyun 105*4882a593Smuzhiyun struct hs_volume_descriptor { 106*4882a593Smuzhiyun __u8 foo [ISODCL ( 1, 8)]; /* 733 */ 107*4882a593Smuzhiyun __u8 type [ISODCL ( 9, 9)]; /* 711 */ 108*4882a593Smuzhiyun char id [ISODCL ( 10, 14)]; 109*4882a593Smuzhiyun __u8 version [ISODCL ( 15, 15)]; /* 711 */ 110*4882a593Smuzhiyun __u8 data[ISODCL(16,2048)]; 111*4882a593Smuzhiyun }; 112*4882a593Smuzhiyun 113*4882a593Smuzhiyun 114*4882a593Smuzhiyun struct hs_primary_descriptor { 115*4882a593Smuzhiyun __u8 foo [ISODCL ( 1, 8)]; /* 733 */ 116*4882a593Smuzhiyun __u8 type [ISODCL ( 9, 9)]; /* 711 */ 117*4882a593Smuzhiyun __u8 id [ISODCL ( 10, 14)]; 118*4882a593Smuzhiyun __u8 version [ISODCL ( 15, 15)]; /* 711 */ 119*4882a593Smuzhiyun __u8 unused1 [ISODCL ( 16, 16)]; /* 711 */ 120*4882a593Smuzhiyun char system_id [ISODCL ( 17, 48)]; /* achars */ 121*4882a593Smuzhiyun char volume_id [ISODCL ( 49, 80)]; /* dchars */ 122*4882a593Smuzhiyun __u8 unused2 [ISODCL ( 81, 88)]; /* 733 */ 123*4882a593Smuzhiyun __u8 volume_space_size [ISODCL ( 89, 96)]; /* 733 */ 124*4882a593Smuzhiyun __u8 unused3 [ISODCL ( 97, 128)]; /* 733 */ 125*4882a593Smuzhiyun __u8 volume_set_size [ISODCL (129, 132)]; /* 723 */ 126*4882a593Smuzhiyun __u8 volume_sequence_number [ISODCL (133, 136)]; /* 723 */ 127*4882a593Smuzhiyun __u8 logical_block_size [ISODCL (137, 140)]; /* 723 */ 128*4882a593Smuzhiyun __u8 path_table_size [ISODCL (141, 148)]; /* 733 */ 129*4882a593Smuzhiyun __u8 type_l_path_table [ISODCL (149, 152)]; /* 731 */ 130*4882a593Smuzhiyun __u8 unused4 [ISODCL (153, 180)]; /* 733 */ 131*4882a593Smuzhiyun __u8 root_directory_record [ISODCL (181, 214)]; /* 9.1 */ 132*4882a593Smuzhiyun }; 133*4882a593Smuzhiyun 134*4882a593Smuzhiyun /* We use this to help us look up the parent inode numbers. */ 135*4882a593Smuzhiyun 136*4882a593Smuzhiyun struct iso_path_table{ 137*4882a593Smuzhiyun __u8 name_len[2]; /* 721 */ 138*4882a593Smuzhiyun __u8 extent[4]; /* 731 */ 139*4882a593Smuzhiyun __u8 parent[2]; /* 721 */ 140*4882a593Smuzhiyun char name[0]; 141*4882a593Smuzhiyun } __attribute__((packed)); 142*4882a593Smuzhiyun 143*4882a593Smuzhiyun /* high sierra is identical to iso, except that the date is only 6 bytes, and 144*4882a593Smuzhiyun there is an extra reserved byte after the flags */ 145*4882a593Smuzhiyun 146*4882a593Smuzhiyun struct iso_directory_record { 147*4882a593Smuzhiyun __u8 length [ISODCL (1, 1)]; /* 711 */ 148*4882a593Smuzhiyun __u8 ext_attr_length [ISODCL (2, 2)]; /* 711 */ 149*4882a593Smuzhiyun __u8 extent [ISODCL (3, 10)]; /* 733 */ 150*4882a593Smuzhiyun __u8 size [ISODCL (11, 18)]; /* 733 */ 151*4882a593Smuzhiyun __u8 date [ISODCL (19, 25)]; /* 7 by 711 */ 152*4882a593Smuzhiyun __u8 flags [ISODCL (26, 26)]; 153*4882a593Smuzhiyun __u8 file_unit_size [ISODCL (27, 27)]; /* 711 */ 154*4882a593Smuzhiyun __u8 interleave [ISODCL (28, 28)]; /* 711 */ 155*4882a593Smuzhiyun __u8 volume_sequence_number [ISODCL (29, 32)]; /* 723 */ 156*4882a593Smuzhiyun __u8 name_len [ISODCL (33, 33)]; /* 711 */ 157*4882a593Smuzhiyun char name [0]; 158*4882a593Smuzhiyun } __attribute__((packed)); 159*4882a593Smuzhiyun 160*4882a593Smuzhiyun #define ISOFS_BLOCK_BITS 11 161*4882a593Smuzhiyun #define ISOFS_BLOCK_SIZE 2048 162*4882a593Smuzhiyun 163*4882a593Smuzhiyun #define ISOFS_BUFFER_SIZE(INODE) ((INODE)->i_sb->s_blocksize) 164*4882a593Smuzhiyun #define ISOFS_BUFFER_BITS(INODE) ((INODE)->i_sb->s_blocksize_bits) 165*4882a593Smuzhiyun 166*4882a593Smuzhiyun #endif /* _ISOFS_FS_H */ 167