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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 | /* SPDX-License-Identifier: GPL-2.0 */ /* * These structs are used by the system-use-sharing protocol, in which the * Rock Ridge extensions are embedded. It is quite possible that other * extensions are present on the disk, and this is fine as long as they * all use SUSP */ struct SU_SP_s { unsigned char magic[2]; unsigned char skip; } __attribute__ ((packed)); struct SU_CE_s { char extent[8]; char offset[8]; char size[8]; }; struct SU_ER_s { unsigned char len_id; unsigned char len_des; unsigned char len_src; unsigned char ext_ver; char data[0]; } __attribute__ ((packed)); struct RR_RR_s { char flags[1]; } __attribute__ ((packed)); struct RR_PX_s { char mode[8]; char n_links[8]; char uid[8]; char gid[8]; }; struct RR_PN_s { char dev_high[8]; char dev_low[8]; }; struct SL_component { unsigned char flags; unsigned char len; char text[0]; } __attribute__ ((packed)); struct RR_SL_s { unsigned char flags; struct SL_component link; } __attribute__ ((packed)); struct RR_NM_s { unsigned char flags; char name[0]; } __attribute__ ((packed)); struct RR_CL_s { char location[8]; }; struct RR_PL_s { char location[8]; }; struct stamp { __u8 time[7]; /* actually 6 unsigned, 1 signed */ } __attribute__ ((packed)); struct RR_TF_s { char flags; struct stamp times[0]; /* Variable number of these beasts */ } __attribute__ ((packed)); /* Linux-specific extension for transparent decompression */ struct RR_ZF_s { char algorithm[2]; char parms[2]; char real_size[8]; }; /* * These are the bits and their meanings for flags in the TF structure. */ #define TF_CREATE 1 #define TF_MODIFY 2 #define TF_ACCESS 4 #define TF_ATTRIBUTES 8 #define TF_BACKUP 16 #define TF_EXPIRATION 32 #define TF_EFFECTIVE 64 #define TF_LONG_FORM 128 struct rock_ridge { char signature[2]; unsigned char len; unsigned char version; union { struct SU_SP_s SP; struct SU_CE_s CE; struct SU_ER_s ER; struct RR_RR_s RR; struct RR_PX_s PX; struct RR_PN_s PN; struct RR_SL_s SL; struct RR_NM_s NM; struct RR_CL_s CL; struct RR_PL_s PL; struct RR_TF_s TF; struct RR_ZF_s ZF; } u; }; #define RR_PX 1 /* POSIX attributes */ #define RR_PN 2 /* POSIX devices */ #define RR_SL 4 /* Symbolic link */ #define RR_NM 8 /* Alternate Name */ #define RR_CL 16 /* Child link */ #define RR_PL 32 /* Parent link */ #define RR_RE 64 /* Relocation directory */ #define RR_TF 128 /* Timestamps */ |