vnode

vnode 定義

typedef struct vnode {
        kmutex_t        v_lock;         /* protects vnode fields */
        uint_t          v_flag;         /* vnode flags (see below) */
        uint_t          v_count;        /* reference count */
        void            *v_data;        /* private data for fs */
        struct vfs      *v_vfsp;        /* ptr to containing VFS */
        struct stdata   *v_stream;      /* associated stream */
        enum vtype      v_type;         /* vnode type */
        dev_t           v_rdev;         /* device (VCHR, VBLK) */

        /* PRIVATE FIELDS BELOW - DO NOT USE */

        struct vfs      *v_vfsmountedhere; /* ptr to vfs mounted here */
        struct vnodeops *v_op;          /* vnode operations */
        struct page     *v_pages;       /* vnode pages list */
        struct filock   *v_filocks;     /* ptr to filock list */
        struct shrlocklist *v_shrlocks; /* ptr to shrlock list */
        krwlock_t       v_nbllock;      /* sync for NBMAND locks */
        kcondvar_t      v_cv;           /* synchronize locking */
        void            *v_locality;    /* hook for locality info */
        struct fem_head *v_femhead;     /* fs monitoring */
        char            *v_path;        /* cached path */
        uint_t          v_rdcnt;        /* open for read count  (VREG only) */
        uint_t          v_wrcnt;        /* open for write count (VREG only) */
        u_longlong_t    v_mmap_read;    /* mmap read count */
        u_longlong_t    v_mmap_write;   /* mmap write count */
        void            *v_mpssdata;    /* info for large page mappings */
        void            *v_fopdata;     /* list of file ops event watches */
        kmutex_t        v_vsd_lock;     /* protects v_vsd field */
        struct vsd_node *v_vsd;         /* vnode specific data */
        struct vnode    *v_xattrdir;    /* unnamed extended attr dir (GFS) */
        uint_t          v_count_dnlc;   /* dnlc reference count */
} vnode_t;

サンプルデータ

# mdb -k
> 0t604::pid2proc |::pfiles -p
FD   TYPE            VNODE PATH
   0  DIR ffffff01cd29a840 /
   1  DIR ffffff01cd29a840 /
   2  DIR ffffff01cd29a840 /
   3 DOOR ffffff01e17bd780 /system/volatile/name_service_door
   4  CHR ffffff01e10e4140 /devices/pseudo/sysmsg@0:sysmsg
   5  REG ffffff01df742940 /var/adm/messages
   6  REG ffffff01dc237940 /var/log/syslog
   7  CHR ffffff01e10ac840 /devices/pseudo/log@0:log
   8 DOOR ffffff01e1c94b00
> ffffff01df742940::print -a vnode_t
ffffff01df742940 {
    ffffff01df742940 v_lock = {
        ffffff01df742940 _opaque = [ 0 ]
    }
    ffffff01df742948 v_flag = 0x10000
    ffffff01df74294c v_count = 0x2
    ffffff01df742950 v_data = 0xffffff01df740c18
    ffffff01df742958 v_vfsp = 0xffffff01cf7121e8
    ffffff01df742960 v_stream = 0
    ffffff01df742968 v_type = 1 (VREG)
    ffffff01df742970 v_rdev = 0xffffffffffffffff
    ffffff01df742978 v_vfsmountedhere = 0
    ffffff01df742980 v_op = 0xffffff01cd292a80
    ffffff01df742988 v_pages = 0
    ffffff01df742990 v_filocks = 0
    ffffff01df742998 v_shrlocks = 0
    ffffff01df7429a0 v_nbllock = {
        ffffff01df7429a0 _opaque = [ 0 ]
    }
    ffffff01df7429a8 v_cv = {
        ffffff01df7429a8 _opaque = 0
    }
    ffffff01df7429aa v_pad = 0xbadd
    ffffff01df7429ac v_count_dnlc = 0x1
    ffffff01df7429b0 v_locality = 0
    ffffff01df7429b8 v_femhead = 0
    ffffff01df7429c0 v_path = 0xffffff01e1074be8 "/var/adm/messages"
    ffffff01df7429c8 v_rdcnt = 0
    ffffff01df7429cc v_wrcnt = 0x1
    ffffff01df7429d0 v_mmap_read = 0
    ffffff01df7429d8 v_mmap_write = 0
    ffffff01df7429e0 v_mpssdata = 0
    ffffff01df7429e8 v_fopdata = 0
    ffffff01df7429f0 v_vsd_lock = {
        ffffff01df7429f0 _opaque = [ 0 ]
    }
    ffffff01df7429f8 v_vsd = 0
    ffffff01df742a00 v_xattrdir = 0
    ffffff01df742a08 v_fw = 0xffffff01df742908
}