procfs.h revision 1.27.2.2
1 /* $NetBSD: procfs.h,v 1.27.2.2 2000/12/08 09:15:01 bouyer 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 LIST_ENTRY(pfsnode) pfs_hash; /* hash chain */ 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 struct procfsmount { 94 void *pmnt_exechook; 95 struct mount *pmnt_mp; 96 }; 97 98 #define VFSTOPROC(mp) ((struct procfsmount *)(mp)->mnt_data) 99 #define PROCTOVFS(pp) ((pp)->pmnt_mp) 100 101 /* 102 * Convert between pfsnode vnode 103 */ 104 #define VTOPFS(vp) ((struct pfsnode *)(vp)->v_data) 105 #define PFSTOV(pfs) ((pfs)->pfs_vnode) 106 107 typedef struct vfs_namemap vfs_namemap_t; 108 struct vfs_namemap { 109 const char *nm_name; 110 int nm_val; 111 }; 112 113 int vfs_getuserstr __P((struct uio *, char *, int *)); 114 vfs_namemap_t *vfs_findname __P((vfs_namemap_t *, char *, int)); 115 116 #define PFIND(pid) ((pid) ? pfind(pid) : &proc0) 117 int procfs_freevp __P((struct vnode *)); 118 int procfs_allocvp __P((struct mount *, struct vnode **, long, pfstype)); 119 int procfs_donote __P((struct proc *, struct proc *, struct pfsnode *, 120 struct uio *)); 121 int procfs_doregs __P((struct proc *, struct proc *, struct pfsnode *, 122 struct uio *)); 123 int procfs_dofpregs __P((struct proc *, struct proc *, struct pfsnode *, 124 struct uio *)); 125 int procfs_domem __P((struct proc *, struct proc *, struct pfsnode *, 126 struct uio *)); 127 int procfs_doctl __P((struct proc *, struct proc *, struct pfsnode *, 128 struct uio *)); 129 int procfs_dostatus __P((struct proc *, struct proc *, struct pfsnode *, 130 struct uio *)); 131 int procfs_domap __P((struct proc *, struct proc *, struct pfsnode *, 132 struct uio *)); 133 int procfs_docmdline __P((struct proc *, struct proc *, struct pfsnode *, 134 struct uio *)); 135 136 int procfs_checkioperm __P((struct proc *, struct proc *)); 137 void procfs_revoke_vnodes __P((struct proc *, void *)); 138 void procfs_hashinit __P((void)); 139 void procfs_hashdone __P((void)); 140 141 /* functions to check whether or not files should be displayed */ 142 int procfs_validfile __P((struct proc *)); 143 int procfs_validfpregs __P((struct proc *)); 144 int procfs_validregs __P((struct proc *)); 145 int procfs_validmap __P((struct proc *)); 146 147 int procfs_rw __P((void *)); 148 149 #define PROCFS_LOCKED 0x01 150 #define PROCFS_WANT 0x02 151 152 extern int (**procfs_vnodeop_p) __P((void *)); 153 extern struct vfsops procfs_vfsops; 154 155 int procfs_root __P((struct mount *, struct vnode **)); 156 157 #endif /* _KERNEL */ 158
Indexes created Thu Oct 02 14:10:14 GMT 2025