MirOS Manual: vget(9)

VGET(9)                       BSD Kernel Manual                        VGET(9)

NAME

     vget - get a vnode from the free list

SYNOPSIS

     #include <sys/param.h>
     #include <sys/vnode.h>

     int
     vget(struct vnode *vp, int flags, struct proc *p);

DESCRIPTION

     Get a vnode from the free list and increment its reference count.

     Its arguments are:

     vp     The vnode to remove from the free list.

     flags  If non-zero, the vnode will also be locked.

     p      The process responsible for this call.

     When not in use, vnodes are kept on a free list. The vnodes still refer-
     ence valid files but may be reused to refer to a new file at any time.
     Often, these vnodes are also held in caches in the system, such as the
     name cache.

     When a vnode which is on the free list is used again, for instance if the
     vnode was found in the name cache as a result of a call to VOP_LOOKUP(9),
     then the new user must call vget() to increment the reference count and
     remove it from the free list.

ERRORS

     [ENOENT]      The vnode vp is in the process of being cleaned out from
                   the underlying file system.

AUTHORS

     This man page was originally written by Doug Rabson for FreeBSD.

MirOS BSD #10-current           July 24, 1996                                1

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