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/*

 * linux/include/linux/hfs_fs.h

 *

 * Copyright (C) 1995-1997  Paul H. Hargrove

 * This file may be distributed under the terms of the GNU General Public License.

 *

 * The source code distribution of the Columbia AppleTalk Package for

 * UNIX, version 6.0, (CAP) was used as a specification of the

 * location and format of files used by CAP's Aufs.  No code from CAP

 * appears in hfs_fs.  hfs_fs is not a work ``derived'' from CAP in

 * the sense of intellectual property law.

 *

 * The source code distributions of Netatalk, versions 1.3.3b2 and

 * 1.4b2, were used as a specification of the location and format of

 * files used by Netatalk's afpd.  No code from Netatalk appears in

 * hfs_fs.  hfs_fs is not a work ``derived'' from Netatalk in the

 * sense of intellectual property law.

 */

#ifndef _LINUX_HFS_FS_H

#define _LINUX_HFS_FS_H

#include <linux/hfs_sysdep.h>

/* magic numbers for Apple Double header files */

#define HFS_DBL_MAGIC           0x00051607

#define HFS_SNGL_MAGIC          0x00051600

#define HFS_HDR_VERSION_1       0x00010000

#define HFS_HDR_VERSION_2       0x00020000

/* magic numbers for various internal structures */

#define HFS_INO_MAGIC           0x4821

#define HFS_SB_MAGIC            0x4822

/* The space used for the AppleDouble or AppleSingle headers */

#define HFS_DBL_HDR_LEN         1024

/* The space used for the Netatalk header */

#define HFS_NAT_HDR_LEN         1024  /* 589 for an exact match */

/* Macros to extract CNID and file "type" from the Linux inode number */

#define HFS_CNID(X)     ((X) & 0x3FFFFFFF)

#define HFS_ITYPE(X)    ((X) & 0xC0000000)

/* Macros to enumerate types */

#define HFS_ITYPE_TO_INT(X)     ((X) >> 30)

#define HFS_INT_TO_ITYPE(X)     ((X) << 30)

/* generic ITYPEs */

#define HFS_ITYPE_0     0x00000000

#define HFS_ITYPE_1     0x40000000

#define HFS_ITYPE_2     0x80000000

#define HFS_ITYPE_3     0xC0000000

#define HFS_ITYPE_NORM  HFS_ITYPE_0     /* "normal" directory or file */

/* ITYPEs for CAP */

#define HFS_CAP_NORM    HFS_ITYPE_0     /* data fork or normal directory */

#define HFS_CAP_DATA    HFS_ITYPE_0     /* data fork of file */

#define HFS_CAP_NDIR    HFS_ITYPE_0     /* normal directory */

#define HFS_CAP_FNDR    HFS_ITYPE_1     /* finder info for file or dir */

#define HFS_CAP_RSRC    HFS_ITYPE_2     /* resource fork of file */

#define HFS_CAP_RDIR    HFS_ITYPE_2     /* .resource directory */

#define HFS_CAP_FDIR    HFS_ITYPE_3     /* .finderinfo directory */

/* ITYPEs for Apple Double */

#define HFS_DBL_NORM    HFS_ITYPE_0     /* data fork or directory */

#define HFS_DBL_DATA    HFS_ITYPE_0     /* data fork of file */

#define HFS_DBL_DIR     HFS_ITYPE_0     /* directory */

#define HFS_DBL_HDR     HFS_ITYPE_1     /* AD header of file or dir */

/* ITYPEs for netatalk */

#define HFS_NAT_NORM    HFS_ITYPE_0     /* data fork or directory */

#define HFS_NAT_DATA    HFS_ITYPE_0     /* data fork of file */

#define HFS_NAT_NDIR    HFS_ITYPE_0     /* normal directory */

#define HFS_NAT_HDR     HFS_ITYPE_1     /* AD header of file or dir */

#define HFS_NAT_HDIR    HFS_ITYPE_2     /* directory holding AD headers */

/* ITYPEs for Apple Single */

#define HFS_SGL_NORM    HFS_ITYPE_0     /* AppleSingle file or directory */

#define HFS_SGL_SNGL    HFS_ITYPE_0     /* AppleSingle file */

#define HFS_SGL_DIR     HFS_ITYPE_0     /* directory */

#define HFS_SGL_DINF    HFS_ITYPE_1     /* %DirInfo for directory */

/* IDs for elements of an AppleDouble or AppleSingle header */

#define HFS_HDR_DATA    1   /* data fork */

#define HFS_HDR_RSRC    2   /* resource fork */

#define HFS_HDR_FNAME   3   /* full (31-character) name */

#define HFS_HDR_COMNT   4   /* comment */

#define HFS_HDR_BWICN   5   /* b/w icon */

#define HFS_HDR_CICON   6   /* color icon info */

#define HFS_HDR_OLDI    7   /* old file info */

#define HFS_HDR_DATES   8   /* file dates info */

#define HFS_HDR_FINFO   9   /* Finder info */

#define HFS_HDR_MACI    10  /* Macintosh info */

#define HFS_HDR_PRODOSI 11  /* ProDOS info */

#define HFS_HDR_MSDOSI  12  /* MSDOS info */

#define HFS_HDR_SNAME   13  /* short name */

#define HFS_HDR_AFPI    14  /* AFP file info */

#define HFS_HDR_DID     15  /* directory id */

#define HFS_HDR_MAX     16

/*

 * There are three time systems.  All three are based on seconds since

 * a particular time/date.

 *      Unix:   unsigned lil-endian since 00:00 GMT, Jan. 1, 1970

 *      mac:    unsigned big-endian since 00:00 GMT, Jan. 1, 1904

 *      header:   SIGNED big-endian since 00:00 GMT, Jan. 1, 2000

 *

 */

#define hfs_h_to_mtime(ARG)     htonl((hfs_s32)ntohl(ARG)+3029529600U)

#define hfs_m_to_htime(ARG)     ((hfs_s32)htonl(ntohl(ARG)-3029529600U))

#define hfs_h_to_utime(ARG)     ((hfs_s32)hfs_to_utc(ntohl(ARG)+946684800U))

#define hfs_u_to_htime(ARG)     ((hfs_s32)htonl(hfs_from_utc(ARG)-946684800U))

#define hfs_u_to_mtime(ARG)     htonl(hfs_from_utc(ARG)+2082844800U)

#define hfs_m_to_utime(ARG)     (hfs_to_utc(ntohl(ARG)-2082844800U))

/*======== Data structures kept in memory ========*/

/*

 * A descriptor for a single entry within the header of an

 * AppleDouble or AppleSingle header file.

 * An array of these make up a table of contents for the file.

 */

struct hfs_hdr_descr {

        hfs_u32 id;     /* The Apple assigned ID for the entry type */

        hfs_u32 offset; /* The offset to reach the entry */

        hfs_u32 length; /* The length of the entry */

};

/*

 * The info needed to reconstruct a given header layout

 */

struct hfs_hdr_layout {

        hfs_u32         magic;                  /* AppleSingle or AppleDouble */

        hfs_u32         version;                /* 0x00010000 or 0x00020000 */

        hfs_u16         entries;                /* How many entries used */

        struct hfs_hdr_descr   

                        descr[HFS_HDR_MAX];     /* Descriptors */

        struct hfs_hdr_descr   

                        *order[HFS_HDR_MAX];    /* 'descr' ordered by offset */

};

/* header layout for netatalk's v1 appledouble file format */

struct hfs_nat_hdr {

        hfs_lword_t     magic;

        hfs_lword_t     version;

        hfs_byte_t      homefs[16];

        hfs_word_t      entries;

        hfs_byte_t      descrs[12*5];

        hfs_byte_t      real_name[255]; /* id=3 */

        hfs_byte_t      comment[200];   /* id=4 XXX: not yet implemented */

        hfs_byte_t      old_info[16];   /* id=7 */

        hfs_u8          finderinfo[32]; /* id=9 */

};

/*

 * Default header layout for Netatalk and AppleDouble

 */

struct hfs_dbl_hdr {

        hfs_lword_t     magic;

        hfs_lword_t     version;

        hfs_byte_t      filler[16];

        hfs_word_t      entries;

        hfs_byte_t      descrs[12*HFS_HDR_MAX];

        hfs_byte_t      real_name[255]; /* id=3 */

        hfs_byte_t      comment[200];   /* id=4 XXX: not yet implemented */

        hfs_u32         create_time;    /* \              */

        hfs_u32         modify_time;    /*  | id=8 (or 7) */

        hfs_u32         backup_time;    /*  |             */

        hfs_u32         access_time;    /* /  (attributes with id=7) */

        hfs_u8          finderinfo[32]; /* id=9 */

        hfs_u32         fileinfo;       /* id=10 */

        hfs_u32         cnid;           /* id=15 */

        hfs_u8          short_name[12]; /* id=13 */

        hfs_u8          prodosi[8];     /* id=11 */

};

/* finder metadata for CAP */

struct hfs_cap_info {

        hfs_byte_t      fi_fndr[32];    /* Finder's info */

        hfs_word_t      fi_attr;        /* AFP attributes (f=file/d=dir) */

#define HFS_AFP_INV             0x001   /* Invisible bit (f/d) */

#define HFS_AFP_EXPFOLDER       0x002   /* exported folder (d) */

#define HFS_AFP_MULTI           0x002   /* Multiuser bit (f) */

#define HFS_AFP_SYS             0x004   /* System bit (f/d) */

#define HFS_AFP_DOPEN           0x008   /* data fork already open (f) */

#define HFS_AFP_MOUNTED         0x008   /* mounted folder (d) */

#define HFS_AFP_ROPEN           0x010   /* resource fork already open (f) */

#define HFS_AFP_INEXPFOLDER     0x010   /* folder in shared area (d) */

#define HFS_AFP_WRI             0x020   /* Write inhibit bit (readonly) (f) */

#define HFS_AFP_BACKUP          0x040   /* backup needed bit (f/d)  */

#define HFS_AFP_RNI             0x080   /* Rename inhibit bit (f/d) */

#define HFS_AFP_DEI             0x100   /* Delete inhibit bit (f/d) */

#define HFS_AFP_NOCOPY          0x400   /* Copy protect bit (f) */

#define HFS_AFP_RDONLY  (       HFS_AFP_WRI|HFS_AFP_RNI|HFS_AFP_DEI)

        hfs_byte_t      fi_magic1;      /* Magic number: */

#define HFS_CAP_MAGIC1          0xFF

        hfs_byte_t      fi_version;     /* Version of this structure: */

#define HFS_CAP_VERSION         0x10

        hfs_byte_t      fi_magic;       /* Another magic number: */

#define HFS_CAP_MAGIC           0xDA

        hfs_byte_t      fi_bitmap;      /* Bitmap of which names are valid: */

#define HFS_CAP_SHORTNAME       0x01

#define HFS_CAP_LONGNAME        0x02

        hfs_byte_t      fi_shortfilename[12+1]; /* "short name" (unused) */

        hfs_byte_t      fi_macfilename[32+1];   /* Original (Macintosh) name */

        hfs_byte_t      fi_comln;       /* Length of comment (always 0) */

        hfs_byte_t      fi_comnt[200];  /* Finder comment (unused) */

        /* optional:    used by aufs only if compiled with USE_MAC_DATES */

        hfs_byte_t      fi_datemagic;   /* Magic number for dates extension: */

#define HFS_CAP_DMAGIC          0xDA

        hfs_byte_t      fi_datevalid;   /* Bitmap of which dates are valid: */

#define HFS_CAP_MDATE           0x01

#define HFS_CAP_CDATE           0x02

        hfs_lword_t     fi_ctime;       /* Creation date (in AFP format) */

        hfs_lword_t     fi_mtime;       /* Modify date (in AFP format) */

        hfs_lword_t     fi_utime;       /* Un*x time of last mtime change */

        hfs_byte_t      pad;

};

#ifdef __KERNEL__

typedef ssize_t hfs_rwret_t;

typedef size_t hfs_rwarg_t;

#include <asm/uaccess.h>

/* Some forward declarations */

struct hfs_fork;

struct hfs_cat_key;

struct hfs_cat_entry;

extern struct hfs_cat_entry *hfs_cat_get(struct hfs_mdb *,

                                         const struct hfs_cat_key *);

/* dir.c */

extern int hfs_create(struct inode *, struct dentry *, int, struct nameidata *);

extern int hfs_mkdir(struct inode *, struct dentry *, int);

extern int hfs_unlink(struct inode *, struct dentry *);

extern int hfs_rmdir(struct inode *, struct dentry *);

extern int hfs_rename(struct inode *, struct dentry *,

                      struct inode *, struct dentry *);

/* dir_cap.c */

extern const struct hfs_name hfs_cap_reserved1[];

extern const struct hfs_name hfs_cap_reserved2[];

extern struct inode_operations hfs_cap_ndir_inode_operations;

extern struct inode_operations hfs_cap_fdir_inode_operations;

extern struct inode_operations hfs_cap_rdir_inode_operations;

extern struct file_operations hfs_cap_dir_operations;

extern void hfs_cap_drop_dentry(struct dentry *, const ino_t);

/* dir_dbl.c */

extern const struct hfs_name hfs_dbl_reserved1[];

extern const struct hfs_name hfs_dbl_reserved2[];

extern struct inode_operations hfs_dbl_dir_inode_operations;

extern struct file_operations hfs_dbl_dir_operations;

extern void hfs_dbl_drop_dentry(struct dentry *, const ino_t);

/* dir_nat.c */

extern const struct hfs_name hfs_nat_reserved1[];

extern const struct hfs_name hfs_nat_reserved2[];

extern struct inode_operations hfs_nat_ndir_inode_operations;

extern struct inode_operations hfs_nat_hdir_inode_operations;

extern struct file_operations hfs_nat_dir_operations;

extern void hfs_nat_drop_dentry(struct dentry *, const ino_t);

/* file.c */

extern hfs_s32 hfs_do_read(struct inode *, struct hfs_fork *, hfs_u32,

                           char __user *, hfs_u32);

extern hfs_s32 hfs_do_write(struct inode *, struct hfs_fork *, hfs_u32,

                            const char __user *, hfs_u32);

extern void hfs_file_fix_mode(struct hfs_cat_entry *entry);

extern struct inode_operations hfs_file_inode_operations;

extern struct file_operations hfs_file_operations;

/* file_cap.c */

extern struct inode_operations hfs_cap_info_inode_operations;

extern struct file_operations hfs_cap_info_operations;

/* file_hdr.c */

extern struct inode_operations hfs_hdr_inode_operations;

extern struct file_operations hfs_hdr_operations;

extern const struct hfs_hdr_layout hfs_dbl_fil_hdr_layout;

extern const struct hfs_hdr_layout hfs_dbl_dir_hdr_layout;

extern const struct hfs_hdr_layout hfs_nat_hdr_layout;

extern const struct hfs_hdr_layout hfs_nat2_hdr_layout;

extern const struct hfs_hdr_layout hfs_sngl_hdr_layout;

extern void hdr_truncate(struct inode *,size_t);

/* inode.c */

extern void hfs_put_inode(struct inode *);

extern int hfs_notify_change(struct dentry *, struct iattr *);

extern int hfs_notify_change_cap(struct dentry *, struct iattr *);

extern int hfs_notify_change_hdr(struct dentry *, struct iattr *);

extern struct inode *hfs_iget(struct hfs_cat_entry *, ino_t, struct dentry *);

extern void hfs_cap_ifill(struct inode *, ino_t, const int);

extern void hfs_dbl_ifill(struct inode *, ino_t, const int);

extern void hfs_nat_ifill(struct inode *, ino_t, const int);

extern void hfs_sngl_ifill(struct inode *, ino_t, const int);

/* super.c */

extern int hfs_fill_super(struct super_block *,void *,int);

/* trans.c */

extern void hfs_colon2mac(struct hfs_name *, const char *, int);

extern void hfs_prcnt2mac(struct hfs_name *, const char *, int);

extern void hfs_triv2mac(struct hfs_name *, const char *, int);

extern void hfs_latin2mac(struct hfs_name *, const char *, int);

extern int hfs_mac2cap(char *, const struct hfs_name *);

extern int hfs_mac2nat(char *, const struct hfs_name *);

extern int hfs_mac2latin(char *, const struct hfs_name *);

extern int hfs_mac2seven(char *, const struct hfs_name *);

extern int hfs_mac2eight(char *, const struct hfs_name *);

extern int hfs_mac2alpha(char *, const struct hfs_name *);

extern int hfs_mac2triv(char *, const struct hfs_name *);

extern void hfs_tolower(unsigned char *, int);

#include <linux/hfs_fs_i.h>

#include <linux/hfs_fs_sb.h>

static inline struct hfs_inode_info *HFS_I(struct inode *inode)

{

        return container_of(inode, struct hfs_inode_info, vfs_inode);

}

static inline struct hfs_sb_info *HFS_SB(struct super_block *sb)

{

        return sb->s_fs_info;

}

static inline void hfs_nameout(struct inode *dir, struct hfs_name *out,

                                   const char *in, int len) {

        HFS_SB(dir->i_sb)->s_nameout(out, in, len);

}

static inline int hfs_namein(struct inode *dir, char *out,

                                 const struct hfs_name *in) {

        int len = HFS_SB(dir->i_sb)->s_namein(out, in);

        if (HFS_SB(dir->i_sb)->s_lowercase) {

                hfs_tolower(out, len);

        }

        return len;

}

#endif /* __KERNEL__ */

#endif