Vnode Operations and Attributes

directories only

vop_lookup (OUT vpp, name)

vop_create (OUT vpp, name, vattr)

vop_remove (vp, name)

vop_link (vp, name)

vop_rename (vp, name, tdvp, tvp, name)

vop_mkdir (OUT vpp, name, vattr)

vop_rmdir (vp, name)

vop_symlink (OUT vpp, name, vattr, contents)

vop_readdir (uio, cookie)

vop_readlink (uio)

files only

vop_getpages (page**, count, offset)

vop_putpages (page**, count, sync, offset)

vop_fsync ()

vnode attributes (vattr)

type (VREG, VDIR, VLNK, etc.)

mode (9+ bits of permissions)

nlink (hard link count)

owner user ID

owner group ID

filesystem ID

unique file ID

file size (bytes and blocks)

access time

modify time

generation number

generic operations

vop_getattr (vattr)

vop_setattr (vattr)

vhold()

vholdrele()

CPS 210

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