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/*
Copyright (C) 1997 Free Software Foundation, Inc.
Written by Thomas Bushnell, n/BSG.
This file is part of the GNU Hurd.
The GNU Hurd is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2, or (at
your option) any later version.
The GNU Hurd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. */
#include "iso9660.h"
/* The results of an rrip_scan_lookup call are one of these */
struct rrip_lookup
{
/* PX */
mode_t mode;
nlink_t nlink;
uid_t uid;
gid_t gid;
/* PN */
dev_t rdev;
/* SL */
char *target;
/* NM */
char *name; /* name of this entry if changed (malloced) */
/* CL */
off_t newloc; /* relocated directory */
/* PL */
off_t parloc; /* parent of relocated directory */
/* TF */
int tfflags;
struct timespec atime, mtime, ctime; /* file times */
/* CL */
struct dirrect *realdirent; /* actual directory entry for attributes */
/* RL */
off_t realfilestart; /* override file start in dir entry */
int valid;
};
/* VALID in one of these is from the following bits */
#define VALID_PX 0x0001
#define VALID_PN 0x0002
#define VALID_SL 0x0004
#define VALID_NM 0x0008
#define VALID_CL 0x0010
#define VALID_PL 0x0020
#define VALID_TF 0x0040
#define VALID_RE 0x0080
/* Definitions for System Use Sharing Protocol.
Version 1. Revision 1.10. Dated July 16, 1993. */
/* A system use field begins with the following header */
struct su_header
{
char sig[2];
unsigned char len;
char version;
};
/* The body of a CE (Continuation Area) field */
struct su_ce
{
char continuation[8];
char offset[8];
char size[8];
};
/* The body of a SP (Sharing Protocol Indicator) field */
struct su_sp
{
unsigned char check[2];
u_char skip;
};
#define SU_SP_CHECK_0 0xbe
#define SU_SP_CHECK_1 0xef
/* The body of a ER (Extension Reference) field */
struct su_er
{
u_char len_id;
u_char len_des;
u_char len_src;
u_char ext_ver;
char more[0];
};
/* Definitions for Rock Ridge extensions.
Version 1. Revision 1.10. Dated July 13, 1993. */
/* These are the ER values to indicate the presence of Rock-Ridge
extensions. */
#define ROCK_VERS 1
#define ROCK_ID "RRIP_1991A"
#define ROCK_DES \
"THE ROCK RIDGE INTERCHANGE PROTOCOL PROVIDES SUPPORT FOR POSIX FILE SYSTEM SEMANTICS"
#define ROCK_SRC \
"ROCK RIDGE SPECIFICATION VERSION 1 REVISION 1.10 JULY 13 1993"
/* The body of a PX (Posix Attributes) field. */
struct rr_px
{
char mode[8];
char nlink[8];
char uid[8];
char gid[8];
};
/* The body of a PN (Posix Device Node) field. */
struct rr_pn
{
char high[8];
char low[8];
};
/* The body of a SL (Symbolic Link) field. */
struct rr_sl
{
u_char flags;
char data[0];
};
/* Each component in the DATA is: */
struct rr_sl_comp
{
u_char flags;
u_char len;
char name[0];
};
/* The body of a NM (Alternate Name) field. */
struct rr_nm
{
u_char flags;
char name[0];
};
/* Flags for SL and NM components */
#define NAME_CONTINUE 0x01
#define NAME_DOT 0x02
#define NAME_DOTDOT 0x04
#define NAME_ROOT 0x08
#define NAME_VOLROOT 0x10
#define NAME_HOST 0x20
/* The body of a CL (Child Directory Location) field. */
struct rr_cl
{
char loc[8];
};
/* The body of a PL (Parent Directory Location) field. */
struct rr_pl
{
char loc[8];
};
/* The body of a TF (Time Stamp) field. */
struct rr_tf
{
u_char flags;
char data[0];
};
/* Flags for a TF */
#define TF_CREATION 0x01
#define TF_MODIFY 0x02
#define TF_ACCESS 0x04
#define TF_ATTRIBUTES 0x08
#define TF_BACKUP 0x10
#define TF_EXPIRATION 0x20
#define TF_EFFECTIVE 0x40
#define TF_LONG_FORM 0x80
/* The body of a SF (Sparse File) field. */
struct rr_sf
{
char size[8];
};
/* Rock-Ridge related functions. */
int rrip_match_lookup (struct dirrect *, char *, size_t, struct rrip_lookup *);
void rrip_lookup (struct dirrect *, struct rrip_lookup *, int);
void rrip_initialize (struct dirrect *);
void release_rrip (struct rrip_lookup *);
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