znode

znode 定義

typedef struct znode {
        struct zfsvfs    *z_zfsvfs;
        vnode_t          *z_vnode;
        uint64_t         z_id;           /* この znode の object ID */
        kmutex_t         z_lock;         /* znode modification lock */
        krwlock_t        z_parent_lock;  /* parent lock for directories */
        krwlock_t        z_name_lock;    /* "master" lock for dirent locks */
        zfs_dirlock_t    *z_dirlocks;    /* directory entry lock list */
        kmutex_t         z_range_lock;   /* protects changes to z_range_avl */
        avl_tree_t       z_range_avl;    /* avl tree of file range locks */
        uint8_t          z_unlinked;     /* file has been unlinked */
        uint8_t          z_atime_dirty;  /* atime needs to be synced */
        uint8_t          z_zn_prefetch;  /* Prefetch znodes? */
        uint8_t          z_moved;        /* Has this znode been moved? */
        uint_t           z_blksz;        /* block size in bytes */
        uint_t           z_seq;          /* modification sequence number */
        uint64_t         z_mapcnt;       /* number of pages mapped to file */
        uint64_t         z_gen;          /* generation (cached) */
        uint64_t         z_size;         /* file size (cached) */
        uint64_t         z_atime[2];     /* atime (cached) */
>        uint64_t        z_links;        /* file links (cached) */
        uint64_t         z_pflags;       /* pflags (cached) */
        uint64_t         z_uid;          /* uid fuid (cached) */
        uint64_t         z_gid;          /* gid fuid (cached) */
        mode_t           z_mode;         /* mode (cached) */
        uint32_t         z_sync_cnt;     /* synchronous open count */
        kmutex_t         z_acl_lock;     /* acl data lock */
        zfs_acl_t        *z_acl_cached;  /* cached acl */
        list_node_t      z_link_node;    /* all znodes in fs link */
        sa_handle_t      *z_sa_hdl;      /* handle to sa data */
        boolean_t        z_is_sa;        /* are we native sa? */
} znode_t;

サンプルデータ

> 0t592::pid2proc |::pfiles -p
FD   TYPE            VNODE PATH
   0  DIR ffffff01cd29a840 /
   1  DIR ffffff01cd29a840 /
   2  DIR ffffff01cd29a840 /
   3 DOOR ffffff01e09f1380 /system/volatile/name_service_door
   4  CHR ffffff01e0702600 /devices/pseudo/sysmsg@0:sysmsg
   5  REG ffffff01d0d28100 /var/adm/messages
   6  REG ffffff01da061b40 /var/log/syslog
   7  CHR ffffff01e7964500 /devices/pseudo/log@0:log
   8 DOOR ffffff01e7964200
> ffffff01d0d28100::print -a vnode_t v_data
ffffff01d0d28110 v_data = 0xffffff01d1346148
> 0xffffff01d1346148::print znode_t
{
    z_zfsvfs = 0xffffff01d2e2e480
    z_vnode = 0xffffff01d0d28100
    z_id = 0x7258
    z_lock = {
        _opaque = [ 0 ]
    }
    z_parent_lock = {
        _opaque = [ 0 ]
    }
    z_name_lock = {
        _opaque = [ 0 ]
    }
    z_dirlocks = 0
    z_range_lock = {
        _opaque = [ 0 ]
    }
    z_range_avl = {
        avl_root = 0
        avl_compar = zfs_range_compare
        avl_offset = 0x8
        avl_numnodes = 0
        avl_size = 0x40
    }
    z_unlinked = 0
    z_atime_dirty = 0
    z_zn_prefetch = 0xdd
    z_moved = 0
    z_blksz = 0x1c800
    z_seq = 0x7a473a
    z_mapcnt = 0
    z_gen = 0x162d
    z_size = 0x1c7f9
    z_atime = [ 0x5071c579, 0xb409b9 ]
    z_mtime = [ 0x507c2a88, 0x2dfebeea ]
    z_ctime = [ 0x507c2a88, 0x2dfebeea ]
    z_links = 0x1
    z_pflags = 0x40800000204
    z_uid = 0
    z_gid = 0
    z_mode = 0x81a4
    z_sync_cnt = 0
    z_acl_lock = {
        _opaque = [ 0 ]
    }
    z_acl_cached = 0xffffff01df7b85c0
    z_link_node = {
        list_next = 0xffffff01d0c22108
        list_prev = 0xffffff01dfb1aaf0
    }
    z_sa_hdl = 0xffffff01d11404d0
    z_is_sa = 0x1 (B_TRUE)
}