120 lines
2.3 KiB
C
120 lines
2.3 KiB
C
/* These structs are used by the system-use-sharing protocol, in which the
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Rock Ridge extensions are embedded. It is quite possible that other
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extensions are present on the disk, and this is fine as long as they
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all use SUSP */
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struct SU_SP{
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unsigned char magic[2];
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unsigned char skip;
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} __attribute__((packed));
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struct SU_CE{
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char extent[8];
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char offset[8];
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char size[8];
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};
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struct SU_ER{
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unsigned char len_id;
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unsigned char len_des;
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unsigned char len_src;
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unsigned char ext_ver;
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char data[0];
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} __attribute__((packed));
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struct RR_RR{
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char flags[1];
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} __attribute__((packed));
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struct RR_PX{
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char mode[8];
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char n_links[8];
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char uid[8];
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char gid[8];
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};
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struct RR_PN{
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char dev_high[8];
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char dev_low[8];
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};
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struct SL_component{
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unsigned char flags;
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unsigned char len;
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char text[0];
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} __attribute__((packed));
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struct RR_SL{
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unsigned char flags;
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struct SL_component link;
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} __attribute__((packed));
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struct RR_NM{
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unsigned char flags;
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char name[0];
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} __attribute__((packed));
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struct RR_CL{
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char location[8];
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};
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struct RR_PL{
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char location[8];
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};
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struct stamp{
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char time[7];
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} __attribute__((packed));
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struct RR_TF{
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char flags;
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struct stamp times[0]; /* Variable number of these beasts */
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} __attribute__((packed));
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/* Linux-specific extension for transparent decompression */
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struct RR_ZF{
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char algorithm[2];
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char parms[2];
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char real_size[8];
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};
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/* These are the bits and their meanings for flags in the TF structure. */
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#define TF_CREATE 1
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#define TF_MODIFY 2
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#define TF_ACCESS 4
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#define TF_ATTRIBUTES 8
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#define TF_BACKUP 16
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#define TF_EXPIRATION 32
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#define TF_EFFECTIVE 64
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#define TF_LONG_FORM 128
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struct rock_ridge{
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char signature[2];
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unsigned char len;
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unsigned char version;
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union{
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struct SU_SP SP;
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struct SU_CE CE;
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struct SU_ER ER;
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struct RR_RR RR;
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struct RR_PX PX;
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struct RR_PN PN;
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struct RR_SL SL;
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struct RR_NM NM;
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struct RR_CL CL;
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struct RR_PL PL;
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struct RR_TF TF;
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struct RR_ZF ZF;
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} u;
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};
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#define RR_PX 1 /* POSIX attributes */
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#define RR_PN 2 /* POSIX devices */
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#define RR_SL 4 /* Symbolic link */
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#define RR_NM 8 /* Alternate Name */
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#define RR_CL 16 /* Child link */
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#define RR_PL 32 /* Parent link */
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#define RR_RE 64 /* Relocation directory */
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#define RR_TF 128 /* Timestamps */
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