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31 * @(#)dead_vnops.c 8.1 (Berkeley) 6/10/93
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
39 #include <sys/mutex.h>
41 #include <sys/vnode.h>
44 * Prototypes for dead operations on vnodes.
46 static vop_lookup_t dead_lookup;
47 static vop_open_t dead_open;
48 static vop_getwritemount_t dead_getwritemount;
49 static vop_rename_t dead_rename;
50 static vop_unset_text_t dead_unset_text;
52 struct vop_vector dead_vnodeops = {
53 .vop_default = &default_vnodeops,
55 .vop_access = VOP_EBADF,
56 .vop_advlock = VOP_EBADF,
57 .vop_bmap = VOP_EBADF,
58 .vop_create = VOP_PANIC,
59 .vop_getattr = VOP_EBADF,
60 .vop_getwritemount = dead_getwritemount,
61 .vop_inactive = VOP_NULL,
62 .vop_ioctl = VOP_EBADF,
63 .vop_link = VOP_PANIC,
64 .vop_lookup = dead_lookup,
65 .vop_mkdir = VOP_PANIC,
66 .vop_mknod = VOP_PANIC,
67 .vop_open = dead_open,
68 .vop_pathconf = VOP_EBADF, /* per pathconf(2) */
69 .vop_poll = dead_poll,
70 .vop_read = dead_read,
71 .vop_readdir = VOP_EBADF,
72 .vop_readlink = VOP_EBADF,
73 .vop_reclaim = VOP_NULL,
74 .vop_remove = VOP_PANIC,
75 .vop_rename = dead_rename,
76 .vop_rmdir = VOP_PANIC,
77 .vop_setattr = VOP_EBADF,
78 .vop_symlink = VOP_PANIC,
79 .vop_vptocnp = VOP_EBADF,
80 .vop_unset_text = dead_unset_text,
81 .vop_write = dead_write,
82 .vop_fplookup_vexec = VOP_EOPNOTSUPP,
84 VFS_VOP_VECTOR_REGISTER(dead_vnodeops);
87 dead_getwritemount(struct vop_getwritemount_args *ap)
95 * Trivial lookup routine that always fails.
98 dead_lookup(struct vop_lookup_args *ap)
106 * Open always fails as if device did not exist.
109 dead_open(struct vop_open_args *ap)
116 dead_read(struct vop_read_args *ap)
120 * Return EOF for tty devices, EIO for others
122 if ((ap->a_vp->v_vflag & VV_ISTTY) == 0)
128 dead_write(struct vop_write_args *ap)
135 dead_poll(struct vop_poll_args *ap)
138 if (ap->a_events & ~POLLSTANDARD)
142 * Let the user find out that the descriptor is gone.
144 return (POLLHUP | ((POLLIN | POLLRDNORM) & ap->a_events));
149 dead_rename(struct vop_rename_args *ap)
157 dead_unset_text(struct vop_unset_text_args *ap)