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/*
* Copyright (C) 2019 Ernesto A. Fernández <ernesto.mnd.fernandez@gmail.com>
*/
#ifndef _INODE_H
#define _INODE_H
#include <sys/stat.h> /* The macros for the inode mode */
#include <apfs/types.h>
#include "htable.h"
struct apfs_inode_key;
struct apfs_sibling_link_key;
struct apfs_sibling_map_key;
/* Flags for the bitmap of seen system xattrs (i_xattr_bmap) */
#define XATTR_BMAP_SYMLINK 0x01 /* Symlink target xattr */
#define XATTR_BMAP_RSRC_FORK 0x02 /* Resource fork xattr */
#define XATTR_BMAP_SECURITY 0x04 /* Security xattr */
#define XATTR_BMAP_FINDER_INFO 0x08 /* Finder info xattr */
#define XATTR_BMAP_COMPRESSED 0x10 /* Compression header xattr */
/*
* Inode data in memory
*/
struct inode {
struct htable_entry i_htable; /* Hash table entry header */
u64 i_private_id; /* Id of the inode's data stream */
bool i_seen; /* Has this inode been seen? */
/* Inode information read from its record (or from its dentries) */
u16 i_mode; /* File mode */
union {
u32 i_nchildren; /* Number of children of directory */
u32 i_nlink; /* Number of hard links to file */
};
u64 i_sparse_bytes; /* Number of sparse bytes */
u64 i_flags; /* Internal flags */
u32 i_rdev; /* Device ID */
char *i_name; /* Name of primary link */
u64 i_parent_id; /* Parent id for the primary link */
struct dstream *i_dstream; /* The inode's dstream (can be NULL) */
u64 i_purg_flags; /* Inode purgeable flags */
char *i_purg_name; /* Purgeable dentry name (can be NULL) */
u32 i_owner; /* Id of the owner user */
struct dirstat *i_dirstat; /* Directory statistics (can be NULL) */
struct compress *i_compress; /* Compression data (can be NULL) */
/* Inode stats measured by the fsck */
u8 i_xattr_bmap; /* Bitmap of system xattrs for inode */
u16 i_xfield_bmap; /* Bitmap of xfields for inode */
u32 i_child_count; /* Number of children of directory */
u32 i_link_count; /* Number of dentries for file */
char *i_first_name; /* Name of first dentry encountered */
u64 i_first_parent; /* Parent id of the first dentry seen */
struct sibling *i_siblings; /* Linked list of siblings for inode */
};
#define i_ino i_htable.h_id /* Inode number */
/*
* Sibling link data in memory
*/
struct sibling {
struct sibling *s_next; /* Next sibling in linked list */
u64 s_id; /* Sibling id */
bool s_checked; /* Has this sibling been checked? */
bool s_mapped; /* Has the sibling map been seen? */
u64 s_parent_ino; /* Inode number for parent */
u16 s_name_len; /* Name length */
u8 *s_name; /* In-memory copy of the name */
};
extern void free_inode_table(struct htable_entry **table);
extern struct inode *get_inode(u64 ino);
extern void check_inode_ids(u64 ino, u64 parent_ino);
extern void parse_inode_record(struct apfs_inode_key *key,
struct apfs_inode_val *val, int len);
extern struct sibling *get_sibling(u64 id, struct inode *inode);
extern void set_or_check_sibling(u64 parent_id, int namelen, u8 *name,
struct sibling *sibling);
extern void parse_sibling_record(struct apfs_sibling_link_key *key,
struct apfs_sibling_val *val, int len);
extern void parse_sibling_map_record(struct apfs_sibling_map_key *key,
struct apfs_sibling_map_val *val, int len);
extern void check_xfield_flags(u8 flags);
#endif /* _INODE_H */
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