| VATTR(9) | Kernel Developer's Manual | VATTR(9) | 
vattr, vattr_null —
#include <sys/param.h>
#include <sys/vnode.h>
void
  
  vattr_null(struct
    vattr *vap);
A vnode attribute has the following structure:
struct vattr {
        enum vtype      va_type;        /* vnode type (for create) */
        mode_t          va_mode;        /* files access mode and type */
        nlink_t         va_nlink;       /* number of references to file */
        uid_t           va_uid;         /* owner user id */
        gid_t           va_gid;         /* owner group id */
        dev_t           va_fsid;        /* file system id (dev for now) */
        ino_t           va_fileid;      /* file id */
        u_quad_t        va_size;        /* file size in bytes */
        long            va_blocksize;   /* blocksize preferred for i/o */
        struct timespec va_atime;       /* time of last access */
        struct timespec va_mtime;       /* time of last modification */
        struct timespec va_ctime;       /* time file changed */
        struct timespec va_birthtime;   /* time file created */
        u_long          va_gen;         /* generation number of file */
        u_long          va_flags;       /* flags defined for file */
        dev_t           va_rdev;        /* device the special file represents */
        u_quad_t        va_bytes;       /* bytes of disk space held by file */
        u_quad_t        va_filerev;     /* file modification number */
        u_int           va_vaflags;     /* operations flags, see below */
        long            va_spare;       /* remain quad aligned */
};
A field value of VNOVAL represents a field whose value is unavailable or which is not to be changed. Valid flag values for va_flags are:
Vnode attributes for a file are set by the vnode operation VOP_SETATTR(9). Vnode attributes for a file are retrieved by the vnode operation VOP_GETATTR(9). For more information on vnode operations see vnodeops(9).
vattr_null(vap)vattr_null() is implemented in
  sys/kern/vfs_subr.c.
| January 8, 2010 | NetBSD 10.0 |