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#ifndef __MFS_INODE_H__
#define __MFS_INODE_H__
/* Inode table. This table holds inodes that are currently in use. In some
* cases they have been opened by an open() or creat() system call, in other
* cases the file system itself needs the inode for one reason or another,
* such as to search a directory for a path name.
* The first part of the struct holds fields that are present on the
* disk; the second part holds fields not present on the disk.
*
* Updates:
* 2007-01-06: jfdsmit@gmail.com added i_zsearch
*/
#include <sys/queue.h>
#include <minix/vfsif.h>
#include "super.h"
EXTERN struct inode {
u16_t i_mode; /* file type, protection, etc. */
u16_t i_nlinks; /* how many links to this file */
u16_t i_uid; /* user id of the file's owner */
u16_t i_gid; /* group number */
i32_t i_size; /* current file size in bytes */
u32_t i_atime; /* time of last access (V2 only) */
u32_t i_mtime; /* when was file data last changed */
u32_t i_ctime; /* when was inode itself changed (V2 only)*/
u32_t i_zone[V2_NR_TZONES]; /* zone numbers for direct, ind, and dbl ind */
/* The following items are not present on the disk. */
dev_t i_dev; /* which device is the inode on */
ino_t i_num; /* inode number on its (minor) device */
int i_count; /* # times inode used; 0 means slot is free */
unsigned int i_ndzones; /* # direct zones (Vx_NR_DZONES) */
unsigned int i_nindirs; /* # indirect zones per indirect block */
struct super_block *i_sp; /* pointer to super block for inode's device */
char i_dirt; /* CLEAN or DIRTY */
zone_t i_zsearch; /* where to start search for new zones */
off_t i_last_dpos; /* where to start dentry search */
char i_mountpoint; /* true if mounted on */
char i_seek; /* set on LSEEK, cleared on READ/WRITE */
char i_update; /* the ATIME, CTIME, and MTIME bits are here */
LIST_ENTRY(inode) i_hash; /* hash list */
TAILQ_ENTRY(inode) i_unused; /* free and unused list */
} inode[NR_INODES];
/* list of unused/free inodes */
EXTERN TAILQ_HEAD(unused_inodes_t, inode) unused_inodes;
/* inode hashtable */
EXTERN LIST_HEAD(inodelist, inode) hash_inodes[INODE_HASH_SIZE];
EXTERN unsigned int inode_cache_hit;
EXTERN unsigned int inode_cache_miss;
/* Field values. Note that CLEAN and DIRTY are defined in "const.h" */
#define NO_SEEK 0 /* i_seek = NO_SEEK if last op was not SEEK */
#define ISEEK 1 /* i_seek = ISEEK if last op was SEEK */
#define IN_MARKCLEAN(i) i->i_dirt = IN_CLEAN
#define IN_MARKDIRTY(i) do { if(i->i_sp->s_rd_only) { printf("%s:%d: dirty inode on rofs ", __FILE__, __LINE__); util_stacktrace(); } else { i->i_dirt = IN_DIRTY; } } while(0)
#define IN_ISCLEAN(i) i->i_dirt == IN_CLEAN
#define IN_ISDIRTY(i) i->i_dirt == IN_DIRTY
#endif
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