1 /* 2 * Copyright (c) 1993 Jan-Simon Pendry 3 * Copyright (c) 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Jan-Simon Pendry. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * @(#)procfs.h 8.6 (Berkeley) 2/3/94 38 * 39 * $Id: procfs.h,v 1.11 1996/06/18 05:15:58 dyson Exp $ 40 */ 41 42 /* 43 * The different types of node in a procfs filesystem 44 */ 45 typedef enum { 46 Proot, /* the filesystem root */ 47 Pproc, /* a process-specific sub-directory */ 48 Pfile, /* the executable file */ 49 Pmem, /* the process's memory image */ 50 Pregs, /* the process's register set */ 51 Pfpregs, /* the process's FP register set */ 52 Pctl, /* process control */ 53 Pstatus, /* process status */ 54 Pnote, /* process notifier */ 55 Pnotepg, /* process group notifier */ 56 Pmap, /* memory map */ 57 Ptype /* executable type */ 58 } pfstype; 59 60 /* 61 * control data for the proc file system. 62 */ 63 struct pfsnode { 64 struct pfsnode *pfs_next; /* next on list */ 65 struct vnode *pfs_vnode; /* vnode associated with this pfsnode */ 66 pfstype pfs_type; /* type of procfs node */ 67 pid_t pfs_pid; /* associated process */ 68 u_short pfs_mode; /* mode bits for stat() */ 69 u_long pfs_flags; /* open flags */ 70 u_long pfs_fileno; /* unique file id */ 71 pid_t pfs_lockowner; /* pfs lock owner */ 72 }; 73 74 #define PROCFS_NOTELEN 64 /* max length of a note (/proc/$pid/note) */ 75 #define PROCFS_CTLLEN 8 /* max length of a ctl msg (/proc/$pid/ctl */ 76 77 /* 78 * Kernel stuff follows 79 */ 80 #ifdef KERNEL 81 #define CNEQ(cnp, s, len) \ 82 ((cnp)->cn_namelen == (len) && \ 83 (bcmp((s), (cnp)->cn_nameptr, (len)) == 0)) 84 85 #define KMEM_GROUP 2 86 /* 87 * Format of a directory entry in /proc, ... 88 * This must map onto struct dirent (see <dirent.h>) 89 */ 90 #define PROCFS_NAMELEN 8 91 struct pfsdent { 92 u_long d_fileno; 93 u_short d_reclen; 94 u_char d_type; 95 u_char d_namlen; 96 char d_name[PROCFS_NAMELEN]; 97 }; 98 #define UIO_MX sizeof(struct pfsdent) 99 #define PROCFS_FILENO(pid, type) \ 100 (((type) == Proot) ? \ 101 2 : \ 102 ((((pid)+1) << 3) + ((int) (type)))) 103 104 /* 105 * Convert between pfsnode vnode 106 */ 107 #define VTOPFS(vp) ((struct pfsnode *)(vp)->v_data) 108 #define PFSTOV(pfs) ((pfs)->pfs_vnode) 109 110 typedef struct vfs_namemap vfs_namemap_t; 111 struct vfs_namemap { 112 const char *nm_name; 113 int nm_val; 114 }; 115 116 extern int vfs_getuserstr __P((struct uio *, char *, int *)); 117 extern vfs_namemap_t *vfs_findname __P((vfs_namemap_t *, char *, int)); 118 119 /* <machine/reg.h> */ 120 struct reg; 121 struct fpreg; 122 123 #define PFIND(pid) ((pid) ? pfind(pid) : &proc0) 124 extern int procfs_freevp __P((struct vnode *)); 125 extern int procfs_allocvp __P((struct mount *, struct vnode **, long, pfstype)); 126 extern struct vnode *procfs_findtextvp __P((struct proc *)); 127 extern int procfs_sstep __P((struct proc *)); 128 extern void procfs_fix_sstep __P((struct proc *)); 129 extern int procfs_read_regs __P((struct proc *, struct reg *)); 130 extern int procfs_write_regs __P((struct proc *, struct reg *)); 131 extern int procfs_read_fpregs __P((struct proc *, struct fpreg *)); 132 extern int procfs_write_fpregs __P((struct proc *, struct fpreg *)); 133 extern int procfs_donote __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 134 extern int procfs_doregs __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 135 extern int procfs_dofpregs __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 136 extern int procfs_domem __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 137 extern int procfs_doctl __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 138 extern int procfs_dostatus __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 139 extern int procfs_domap __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 140 extern int procfs_dotype __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 141 142 /* check to see if the process has the "items" (regs/file) */ 143 int procfs_validfile __P((struct proc *)); 144 int procfs_validfpregs __P((struct proc *)); 145 int procfs_validregs __P((struct proc *)); 146 int procfs_validmap __P((struct proc *)); 147 int procfs_validtype __P((struct proc *)); 148 149 #define PROCFS_LOCKED 0x01 150 #define PROCFS_WANT 0x02 151 152 extern vop_t **procfs_vnodeop_p; 153 extern struct vfsops procfs_vfsops; 154 155 int procfs_root __P((struct mount *, struct vnode **)); 156 int procfs_rw __P((struct vop_read_args *)); 157 #endif /* KERNEL */ 158