/* | |
* 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 { | |
char time[7]; | |
} __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 */ |