1 /* $NetBSD: procfs.h,v 1.14 1995/10/09 11:18:51 mycroft Exp $ */ 2 3 /* 4 * Copyright (c) 1993 Jan-Simon Pendry 5 * Copyright (c) 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Jan-Simon Pendry. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#)procfs.h 8.7 (Berkeley) 6/15/94 40 */ 41 42 /* 43 * The different types of node in a procfs filesystem 44 */ 45 typedef enum { 46 Proot, /* the filesystem root */ 47 Pcurproc, /* symbolic link for curproc */ 48 Pproc, /* a process-specific sub-directory */ 49 Pfile, /* the executable file */ 50 Pmem, /* the process's memory image */ 51 Pregs, /* the process's register set */ 52 Pfpregs, /* the process's FP register set */ 53 Pctl, /* process control */ 54 Pstatus, /* process status */ 55 Pnote, /* process notifier */ 56 Pnotepg /* process group notifier */ 57 } pfstype; 58 59 /* 60 * control data for the proc file system. 61 */ 62 struct pfsnode { 63 struct pfsnode *pfs_next; /* next on list */ 64 struct vnode *pfs_vnode; /* vnode associated with this pfsnode */ 65 pfstype pfs_type; /* type of procfs node */ 66 pid_t pfs_pid; /* associated process */ 67 u_short pfs_mode; /* mode bits for stat() */ 68 u_long pfs_flags; /* open flags */ 69 u_long pfs_fileno; /* unique file id */ 70 }; 71 72 #define PROCFS_NOTELEN 64 /* max length of a note (/proc/$pid/note) */ 73 #define PROCFS_CTLLEN 8 /* max length of a ctl msg (/proc/$pid/ctl */ 74 75 /* 76 * Kernel stuff follows 77 */ 78 #ifdef _KERNEL 79 #define CNEQ(cnp, s, len) \ 80 ((cnp)->cn_namelen == (len) && \ 81 (bcmp((s), (cnp)->cn_nameptr, (len)) == 0)) 82 83 #define UIO_MX 32 84 85 #define PROCFS_FILENO(pid, type) \ 86 (((type) < Pproc) ? \ 87 ((type) + 2) : \ 88 ((((pid)+1) << 4) + ((int) (type)))) 89 90 /* 91 * Convert between pfsnode vnode 92 */ 93 #define VTOPFS(vp) ((struct pfsnode *)(vp)->v_data) 94 #define PFSTOV(pfs) ((pfs)->pfs_vnode) 95 96 typedef struct vfs_namemap vfs_namemap_t; 97 struct vfs_namemap { 98 const char *nm_name; 99 int nm_val; 100 }; 101 102 int vfs_getuserstr __P((struct uio *, char *, int *)); 103 vfs_namemap_t *vfs_findname __P((vfs_namemap_t *, char *, int)); 104 105 #define PFIND(pid) ((pid) ? pfind(pid) : &proc0) 106 int procfs_freevp __P((struct vnode *)); 107 int procfs_allocvp __P((struct mount *, struct vnode **, long, pfstype)); 108 struct vnode *procfs_findtextvp __P((struct proc *)); 109 int procfs_donote __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 110 int procfs_doregs __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 111 int procfs_dofpregs __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 112 int procfs_domem __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 113 int procfs_doctl __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 114 int procfs_dostatus __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 115 116 /* functions to check whether or not files should be displayed */ 117 int procfs_validfile __P((struct proc *)); 118 int procfs_validfpregs __P((struct proc *)); 119 int procfs_validregs __P((struct proc *)); 120 121 #define PROCFS_LOCKED 0x01 122 #define PROCFS_WANT 0x02 123 124 extern int (**procfs_vnodeop_p)(); 125 extern struct vfsops procfs_vfsops; 126 127 /* 128 * Prototypes for procfs vnode ops 129 */ 130 int procfs_badop(); /* varargs */ 131 int procfs_rw __P((struct vop_read_args *)); 132 int procfs_lookup __P((struct vop_lookup_args *)); 133 #define procfs_create ((int (*) __P((struct vop_create_args *))) procfs_badop) 134 #define procfs_mknod ((int (*) __P((struct vop_mknod_args *))) procfs_badop) 135 int procfs_open __P((struct vop_open_args *)); 136 int procfs_close __P((struct vop_close_args *)); 137 int procfs_access __P((struct vop_access_args *)); 138 int procfs_getattr __P((struct vop_getattr_args *)); 139 int procfs_setattr __P((struct vop_setattr_args *)); 140 #define procfs_read procfs_rw 141 #define procfs_write procfs_rw 142 int procfs_ioctl __P((struct vop_ioctl_args *)); 143 #define procfs_select ((int (*) __P((struct vop_select_args *))) procfs_badop) 144 #define procfs_mmap ((int (*) __P((struct vop_mmap_args *))) procfs_badop) 145 #define procfs_fsync ((int (*) __P((struct vop_fsync_args *))) procfs_badop) 146 #define procfs_seek ((int (*) __P((struct vop_seek_args *))) procfs_badop) 147 #define procfs_remove ((int (*) __P((struct vop_remove_args *))) procfs_badop) 148 #define procfs_link ((int (*) __P((struct vop_link_args *))) procfs_badop) 149 #define procfs_rename ((int (*) __P((struct vop_rename_args *))) procfs_badop) 150 #define procfs_mkdir ((int (*) __P((struct vop_mkdir_args *))) procfs_badop) 151 #define procfs_rmdir ((int (*) __P((struct vop_rmdir_args *))) procfs_badop) 152 #define procfs_symlink ((int (*) __P((struct vop_symlink_args *))) procfs_badop) 153 int procfs_readdir __P((struct vop_readdir_args *)); 154 int procfs_readlink __P((struct vop_readlink_args *)); 155 int procfs_abortop __P((struct vop_abortop_args *)); 156 int procfs_inactive __P((struct vop_inactive_args *)); 157 int procfs_reclaim __P((struct vop_reclaim_args *)); 158 #define procfs_lock ((int (*) __P((struct vop_lock_args *))) nullop) 159 #define procfs_unlock ((int (*) __P((struct vop_unlock_args *))) nullop) 160 int procfs_bmap __P((struct vop_bmap_args *)); 161 #define procfs_strategy ((int (*) __P((struct vop_strategy_args *))) procfs_badop) 162 int procfs_print __P((struct vop_print_args *)); 163 #define procfs_islocked ((int (*) __P((struct vop_islocked_args *))) nullop) 164 #define procfs_advlock ((int (*) __P((struct vop_advlock_args *))) procfs_badop) 165 #define procfs_blkatoff ((int (*) __P((struct vop_blkatoff_args *))) procfs_badop) 166 #define procfs_valloc ((int (*) __P((struct vop_valloc_args *))) procfs_badop) 167 #define procfs_vfree ((int (*) __P((struct vop_vfree_args *))) nullop) 168 #define procfs_truncate ((int (*) __P((struct vop_truncate_args *))) procfs_badop) 169 #define procfs_update ((int (*) __P((struct vop_update_args *))) nullop) 170 #endif /* _KERNEL */ 171