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88859601 | 1 | /* |
1446b03c KB |
2 | * Copyright (c) 1990, 1993 |
3 | * The Regents of the University of California. All rights reserved. | |
88859601 | 4 | * |
6dc0e27a | 5 | * %sccs.include.redist.c% |
88859601 | 6 | * |
47e82354 | 7 | * @(#)specdev.h 8.2 (Berkeley) %G% |
88859601 KM |
8 | */ |
9 | ||
10 | /* | |
11 | * This structure defines the information maintained about | |
12 | * special devices. It is allocated in checkalias and freed | |
13 | * in vgone. | |
14 | */ | |
15 | struct specinfo { | |
16 | struct vnode **si_hashchain; | |
17 | struct vnode *si_specnext; | |
18 | long si_flags; | |
19 | dev_t si_rdev; | |
20 | }; | |
21 | /* | |
22 | * Exported shorthand | |
23 | */ | |
24 | #define v_rdev v_specinfo->si_rdev | |
25 | #define v_hashchain v_specinfo->si_hashchain | |
26 | #define v_specnext v_specinfo->si_specnext | |
27 | #define v_specflags v_specinfo->si_flags | |
28 | ||
29 | /* | |
30 | * Flags for specinfo | |
31 | */ | |
32 | #define SI_MOUNTEDON 0x0001 /* block special device is mounted on */ | |
33 | ||
34 | /* | |
35 | * Special device management | |
36 | */ | |
37 | #define SPECHSZ 64 | |
38 | #if ((SPECHSZ&(SPECHSZ-1)) == 0) | |
39 | #define SPECHASH(rdev) (((rdev>>5)+(rdev))&(SPECHSZ-1)) | |
40 | #else | |
41 | #define SPECHASH(rdev) (((unsigned)((rdev>>5)+(rdev)))%SPECHSZ) | |
42 | #endif | |
43 | ||
44 | struct vnode *speclisth[SPECHSZ]; | |
184ba363 KM |
45 | |
46 | /* | |
47 | * Prototypes for special file operations on vnodes. | |
48 | */ | |
ec532f0d | 49 | extern int (**spec_vnodeop_p)(); |
6d18c7be | 50 | struct nameidata; |
cb5e2fbb | 51 | struct componentname; |
6d18c7be KM |
52 | struct ucred; |
53 | struct flock; | |
54 | struct buf; | |
55 | struct uio; | |
56 | ||
184ba363 KM |
57 | int spec_badop(), |
58 | spec_ebadf(); | |
59 | ||
9342689a JH |
60 | int spec_lookup __P((struct vop_lookup_args *)); |
61 | #define spec_create ((int (*) __P((struct vop_create_args *)))spec_badop) | |
62 | #define spec_mknod ((int (*) __P((struct vop_mknod_args *)))spec_badop) | |
63 | int spec_open __P((struct vop_open_args *)); | |
64 | int spec_close __P((struct vop_close_args *)); | |
65 | #define spec_access ((int (*) __P((struct vop_access_args *)))spec_ebadf) | |
66 | #define spec_getattr ((int (*) __P((struct vop_getattr_args *)))spec_ebadf) | |
67 | #define spec_setattr ((int (*) __P((struct vop_setattr_args *)))spec_ebadf) | |
68 | int spec_read __P((struct vop_read_args *)); | |
69 | int spec_write __P((struct vop_write_args *)); | |
70 | int spec_ioctl __P((struct vop_ioctl_args *)); | |
71 | int spec_select __P((struct vop_select_args *)); | |
72 | #define spec_mmap ((int (*) __P((struct vop_mmap_args *)))spec_badop) | |
37843f55 | 73 | int spec_fsync __P((struct vop_fsync_args *)); |
9342689a JH |
74 | #define spec_seek ((int (*) __P((struct vop_seek_args *)))spec_badop) |
75 | #define spec_remove ((int (*) __P((struct vop_remove_args *)))spec_badop) | |
76 | #define spec_link ((int (*) __P((struct vop_link_args *)))spec_badop) | |
77 | #define spec_rename ((int (*) __P((struct vop_rename_args *)))spec_badop) | |
78 | #define spec_mkdir ((int (*) __P((struct vop_mkdir_args *)))spec_badop) | |
79 | #define spec_rmdir ((int (*) __P((struct vop_rmdir_args *)))spec_badop) | |
80 | #define spec_symlink ((int (*) __P((struct vop_symlink_args *)))spec_badop) | |
81 | #define spec_readdir ((int (*) __P((struct vop_readdir_args *)))spec_badop) | |
82 | #define spec_readlink ((int (*) __P((struct vop_readlink_args *)))spec_badop) | |
83 | #define spec_abortop ((int (*) __P((struct vop_abortop_args *)))spec_badop) | |
84 | #define spec_inactive ((int (*) __P((struct vop_inactive_args *)))nullop) | |
85 | #define spec_reclaim ((int (*) __P((struct vop_reclaim_args *)))nullop) | |
86 | int spec_lock __P((struct vop_lock_args *)); | |
87 | int spec_unlock __P((struct vop_unlock_args *)); | |
88 | int spec_bmap __P((struct vop_bmap_args *)); | |
89 | int spec_strategy __P((struct vop_strategy_args *)); | |
90 | int spec_print __P((struct vop_print_args *)); | |
91 | #define spec_islocked ((int (*) __P((struct vop_islocked_args *)))nullop) | |
b7c4b3cc | 92 | int spec_pathconf __P((struct vop_pathconf_args *)); |
9342689a JH |
93 | int spec_advlock __P((struct vop_advlock_args *)); |
94 | #define spec_blkatoff ((int (*) __P((struct vop_blkatoff_args *)))spec_badop) | |
9342689a | 95 | #define spec_valloc ((int (*) __P((struct vop_valloc_args *)))spec_badop) |
47e82354 KM |
96 | #define spec_reallocblks \ |
97 | ((int (*) __P((struct vop_reallocblks_args *)))spec_badop) | |
9342689a JH |
98 | #define spec_vfree ((int (*) __P((struct vop_vfree_args *)))spec_badop) |
99 | #define spec_truncate ((int (*) __P((struct vop_truncate_args *)))nullop) | |
100 | #define spec_update ((int (*) __P((struct vop_update_args *)))nullop) | |
101 | #define spec_bwrite ((int (*) __P((struct vop_bwrite_args *)))nullop) |