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/*

 * 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 */