diff options
Diffstat (limited to 'sys/kern/vfs_cache.c')
| -rw-r--r-- | sys/kern/vfs_cache.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/sys/kern/vfs_cache.c b/sys/kern/vfs_cache.c index aea71af..9eecc09 100644 --- a/sys/kern/vfs_cache.c +++ b/sys/kern/vfs_cache.c @@ -1359,6 +1359,28 @@ vn_fullpath1(struct thread *td, struct vnode *vp, struct vnode *rdir, return (0); } +struct vnode * +vn_dir_dd_ino(struct vnode *vp) +{ + struct namecache *ncp; + struct vnode *ddvp; + + ASSERT_VOP_LOCKED(vp, "vn_dir_dd_ino"); + CACHE_RLOCK(); + TAILQ_FOREACH(ncp, &(vp->v_cache_dst), nc_dst) { + if ((ncp->nc_flag & NCF_ISDOTDOT) != 0) + continue; + ddvp = ncp->nc_dvp; + VI_LOCK(ddvp); + CACHE_RUNLOCK(); + if (vget(ddvp, LK_INTERLOCK | LK_SHARED | LK_NOWAIT, curthread)) + return (NULL); + return (ddvp); + } + CACHE_RUNLOCK(); + return (NULL); +} + int vn_commname(struct vnode *vp, char *buf, u_int buflen) { |
