1 /* $NetBSD: procfs.h,v 1.27 1999/09/02 23:33:45 thorpej 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 8.9 (Berkeley) 5/14/95 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 Pself, /* like curproc, but this is the Linux name */ 49 Pproc, /* a process-specific sub-directory */ 50 Pfile, /* the executable file */ 51 Pmem, /* the process's memory image */ 52 Pregs, /* the process's register set */ 53 Pfpregs, /* the process's FP register set */ 54 Pctl, /* process control */ 55 Pstatus, /* process status */ 56 Pnote, /* process notifier */ 57 Pnotepg, /* process group notifier */ 58 Pmap, /* memory map */ 59 Pcmdline /* process command line args */ 60 } pfstype; 61 62 /* 63 * control data for the proc file system. 64 */ 65 struct pfsnode { 66 struct pfsnode *pfs_next; /* next on list */ 67 struct vnode *pfs_vnode; /* vnode associated with this pfsnode */ 68 pfstype pfs_type; /* type of procfs node */ 69 pid_t pfs_pid; /* associated process */ 70 mode_t pfs_mode; /* mode bits for stat() */ 71 u_long pfs_flags; /* open flags */ 72 u_long pfs_fileno; /* unique file id */ 73 }; 74 75 #define PROCFS_NOTELEN 64 /* max length of a note (/proc/$pid/note) */ 76 #define PROCFS_CTLLEN 8 /* max length of a ctl msg (/proc/$pid/ctl */ 77 78 /* 79 * Kernel stuff follows 80 */ 81 #ifdef _KERNEL 82 #define CNEQ(cnp, s, len) \ 83 ((cnp)->cn_namelen == (len) && \ 84 (memcmp((s), (cnp)->cn_nameptr, (len)) == 0)) 85 86 #define UIO_MX 32 87 88 #define PROCFS_FILENO(pid, type) \ 89 (((type) < Pproc) ? \ 90 ((type) + 2) : \ 91 ((((pid)+1) << 4) + ((int) (type)))) 92 93 /* 94 * Convert between pfsnode vnode 95 */ 96 #define VTOPFS(vp) ((struct pfsnode *)(vp)->v_data) 97 #define PFSTOV(pfs) ((pfs)->pfs_vnode) 98 99 typedef struct vfs_namemap vfs_namemap_t; 100 struct vfs_namemap { 101 const char *nm_name; 102 int nm_val; 103 }; 104 105 int vfs_getuserstr __P((struct uio *, char *, int *)); 106 vfs_namemap_t *vfs_findname __P((vfs_namemap_t *, char *, int)); 107 108 #define PFIND(pid) ((pid) ? pfind(pid) : &proc0) 109 int procfs_freevp __P((struct vnode *)); 110 int procfs_allocvp __P((struct mount *, struct vnode **, long, pfstype)); 111 struct vnode *procfs_findtextvp __P((struct proc *)); 112 int procfs_donote __P((struct proc *, struct proc *, struct pfsnode *, 113 struct uio *)); 114 int procfs_doregs __P((struct proc *, struct proc *, struct pfsnode *, 115 struct uio *)); 116 int procfs_dofpregs __P((struct proc *, struct proc *, struct pfsnode *, 117 struct uio *)); 118 int procfs_domem __P((struct proc *, struct proc *, struct pfsnode *, 119 struct uio *)); 120 int procfs_doctl __P((struct proc *, struct proc *, struct pfsnode *, 121 struct uio *)); 122 int procfs_dostatus __P((struct proc *, struct proc *, struct pfsnode *, 123 struct uio *)); 124 int procfs_domap __P((struct proc *, struct proc *, struct pfsnode *, 125 struct uio *)); 126 int procfs_docmdline __P((struct proc *, struct proc *, struct pfsnode *, 127 struct uio *)); 128 129 int procfs_checkioperm __P((struct proc *, struct proc *)); 130 131 /* functions to check whether or not files should be displayed */ 132 int procfs_validfile __P((struct proc *)); 133 int procfs_validfpregs __P((struct proc *)); 134 int procfs_validregs __P((struct proc *)); 135 int procfs_validmap __P((struct proc *)); 136 137 int procfs_rw __P((void *)); 138 139 #define PROCFS_LOCKED 0x01 140 #define PROCFS_WANT 0x02 141 142 extern int (**procfs_vnodeop_p) __P((void *)); 143 extern struct vfsops procfs_vfsops; 144 145 int procfs_root __P((struct mount *, struct vnode **)); 146 147 #endif /* _KERNEL */ 148