1 /* 2 * Copyright (c) 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 * 7 * @(#)specdev.h 8.5 (Berkeley) 05/14/95 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]; 45 46 /* 47 * Prototypes for special file operations on vnodes. 48 */ 49 extern int (**spec_vnodeop_p)(); 50 struct nameidata; 51 struct componentname; 52 struct ucred; 53 struct flock; 54 struct buf; 55 struct uio; 56 57 int spec_badop(), 58 spec_ebadf(); 59 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 #define spec_lease_check ((int (*) __P((struct vop_lease_args *)))nullop) 71 int spec_ioctl __P((struct vop_ioctl_args *)); 72 int spec_select __P((struct vop_select_args *)); 73 #define spec_revoke vop_revoke 74 #define spec_mmap ((int (*) __P((struct vop_mmap_args *)))spec_badop) 75 int spec_fsync __P((struct vop_fsync_args *)); 76 #define spec_seek ((int (*) __P((struct vop_seek_args *)))spec_badop) 77 #define spec_remove ((int (*) __P((struct vop_remove_args *)))spec_badop) 78 #define spec_link ((int (*) __P((struct vop_link_args *)))spec_badop) 79 #define spec_rename ((int (*) __P((struct vop_rename_args *)))spec_badop) 80 #define spec_mkdir ((int (*) __P((struct vop_mkdir_args *)))spec_badop) 81 #define spec_rmdir ((int (*) __P((struct vop_rmdir_args *)))spec_badop) 82 #define spec_symlink ((int (*) __P((struct vop_symlink_args *)))spec_badop) 83 #define spec_readdir ((int (*) __P((struct vop_readdir_args *)))spec_badop) 84 #define spec_readlink ((int (*) __P((struct vop_readlink_args *)))spec_badop) 85 #define spec_abortop ((int (*) __P((struct vop_abortop_args *)))spec_badop) 86 #define spec_inactive ((int (*) __P((struct vop_inactive_args *)))nullop) 87 #define spec_reclaim ((int (*) __P((struct vop_reclaim_args *)))nullop) 88 #define spec_lock ((int (*) __P((struct vop_lock_args *)))vop_nolock) 89 #define spec_unlock ((int (*) __P((struct vop_unlock_args *)))vop_nounlock) 90 int spec_bmap __P((struct vop_bmap_args *)); 91 int spec_strategy __P((struct vop_strategy_args *)); 92 int spec_print __P((struct vop_print_args *)); 93 #define spec_islocked ((int(*) __P((struct vop_islocked_args *)))vop_noislocked) 94 int spec_pathconf __P((struct vop_pathconf_args *)); 95 int spec_advlock __P((struct vop_advlock_args *)); 96 #define spec_blkatoff ((int (*) __P((struct vop_blkatoff_args *)))spec_badop) 97 #define spec_valloc ((int (*) __P((struct vop_valloc_args *)))spec_badop) 98 #define spec_reallocblks \ 99 ((int (*) __P((struct vop_reallocblks_args *)))spec_badop) 100 #define spec_vfree ((int (*) __P((struct vop_vfree_args *)))spec_badop) 101 #define spec_truncate ((int (*) __P((struct vop_truncate_args *)))nullop) 102 #define spec_update ((int (*) __P((struct vop_update_args *)))nullop) 103 #define spec_bwrite ((int (*) __P((struct vop_bwrite_args *)))nullop) 104