1 /* $NetBSD: procfs.h,v 1.43 2003/04/18 10:00:19 jdolecek 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 /* This also pulls in __HAVE_PROCFS_MACHDEP */ 43 #include <sys/ptrace.h> 44 45 /* 46 * The different types of node in a procfs filesystem 47 */ 48 typedef enum { 49 Proot, /* the filesystem root */ 50 Pcurproc, /* symbolic link for curproc */ 51 Pself, /* like curproc, but this is the Linux name */ 52 Pproc, /* a process-specific sub-directory */ 53 Pfile, /* the executable file */ 54 Pmem, /* the process's memory image */ 55 Pregs, /* the process's register set */ 56 Pfpregs, /* the process's FP register set */ 57 Pctl, /* process control */ 58 Pstatus, /* process status */ 59 Pnote, /* process notifier */ 60 Pnotepg, /* process group notifier */ 61 Pmap, /* memory map */ 62 Pcmdline, /* process command line args */ 63 Pmeminfo, /* system memory info (if -o linux) */ 64 Pcpuinfo, /* CPU info (if -o linux) */ 65 Pmaps, /* memory map, Linux style (if -o linux) */ 66 Pfd, /* a directory containing the processes open fd's */ 67 Puptime, /* elapsed time since (if -o linux) */ 68 #ifdef __HAVE_PROCFS_MACHDEP 69 PROCFS_MACHDEP_NODE_TYPES 70 #endif 71 } pfstype; 72 73 /* 74 * control data for the proc file system. 75 */ 76 struct pfsnode { 77 LIST_ENTRY(pfsnode) pfs_hash; /* hash chain */ 78 struct vnode *pfs_vnode; /* vnode associated with this pfsnode */ 79 pfstype pfs_type; /* type of procfs node */ 80 pid_t pfs_pid; /* associated process */ 81 int pfs_fd; /* associated fd if not -1 */ 82 mode_t pfs_mode; /* mode bits for stat() */ 83 u_long pfs_flags; /* open flags */ 84 u_long pfs_fileno; /* unique file id */ 85 }; 86 87 #define PROCFS_NOTELEN 64 /* max length of a note (/proc/$pid/note) */ 88 #define PROCFS_CTLLEN 8 /* max length of a ctl msg (/proc/$pid/ctl */ 89 90 struct procfs_args { 91 int version; 92 int flags; 93 }; 94 95 #define PROCFS_ARGSVERSION 1 96 97 #define PROCFSMNT_LINUXCOMPAT 0x01 98 99 #define PROCFSMNT_BITS "\177\20" \ 100 "b\00linuxcompat" 101 102 /* 103 * Kernel stuff follows 104 */ 105 #ifdef _KERNEL 106 #define CNEQ(cnp, s, len) \ 107 ((cnp)->cn_namelen == (len) && \ 108 (memcmp((s), (cnp)->cn_nameptr, (len)) == 0)) 109 110 #define UIO_MX 32 111 112 #define PROCFS_FILENO(pid, type, fd) \ 113 (((type) < Pproc) ? ((type) + 2) : \ 114 (((fd) == -1) ? ((((pid)+1) << 5) + ((int) (type))) : \ 115 ((((pid)+1) << 16) | ((fd) << 5) | ((int) (type))))) 116 117 struct procfsmount { 118 void *pmnt_exechook; 119 int pmnt_flags; 120 }; 121 122 #define VFSTOPROC(mp) ((struct procfsmount *)(mp)->mnt_data) 123 124 /* 125 * Convert between pfsnode vnode 126 */ 127 #define VTOPFS(vp) ((struct pfsnode *)(vp)->v_data) 128 #define PFSTOV(pfs) ((pfs)->pfs_vnode) 129 130 typedef struct vfs_namemap vfs_namemap_t; 131 struct vfs_namemap { 132 const char *nm_name; 133 int nm_val; 134 }; 135 136 int vfs_getuserstr __P((struct uio *, char *, int *)); 137 const vfs_namemap_t *vfs_findname __P((const vfs_namemap_t *, const char *, int)); 138 139 #define PFIND(pid) ((pid) ? pfind(pid) : &proc0) 140 int procfs_freevp __P((struct vnode *)); 141 int procfs_allocvp __P((struct mount *, struct vnode **, pid_t, pfstype, int)); 142 int procfs_donote __P((struct proc *, struct proc *, struct pfsnode *, 143 struct uio *)); 144 int procfs_doregs __P((struct proc *, struct lwp *, struct pfsnode *, 145 struct uio *)); 146 int procfs_dofpregs __P((struct proc *, struct lwp *, struct pfsnode *, 147 struct uio *)); 148 int procfs_domem __P((struct proc *, struct proc *, struct pfsnode *, 149 struct uio *)); 150 int procfs_doctl __P((struct proc *, struct lwp *, struct pfsnode *, 151 struct uio *)); 152 int procfs_dostatus __P((struct proc *, struct lwp *, struct pfsnode *, 153 struct uio *)); 154 int procfs_domap __P((struct proc *, struct proc *, struct pfsnode *, 155 struct uio *, int)); 156 int procfs_docmdline __P((struct proc *, struct proc *, struct pfsnode *, 157 struct uio *)); 158 int procfs_domeminfo __P((struct proc *, struct proc *, struct pfsnode *, 159 struct uio *)); 160 int procfs_docpuinfo __P((struct proc *, struct proc *, struct pfsnode *, 161 struct uio *)); 162 int procfs_dofd __P((struct proc *, struct proc *, struct pfsnode *, 163 struct uio *)); 164 int procfs_douptime __P((struct proc *, struct proc *, struct pfsnode *, 165 struct uio *)); 166 167 void procfs_revoke_vnodes __P((struct proc *, void *)); 168 void procfs_hashinit __P((void)); 169 void procfs_hashreinit __P((void)); 170 void procfs_hashdone __P((void)); 171 int procfs_getfp __P((struct pfsnode *, struct proc **, struct file **)); 172 173 /* functions to check whether or not files should be displayed */ 174 int procfs_validfile __P((struct proc *, struct mount *)); 175 int procfs_validfpregs __P((struct proc *, struct mount *)); 176 int procfs_validregs __P((struct proc *, struct mount *)); 177 int procfs_validmap __P((struct proc *, struct mount *)); 178 179 int procfs_rw __P((void *)); 180 181 int procfs_getcpuinfstr __P((char *, int *)); 182 183 #define PROCFS_LOCKED 0x01 184 #define PROCFS_WANT 0x02 185 186 extern int (**procfs_vnodeop_p) __P((void *)); 187 extern struct vfsops procfs_vfsops; 188 189 int procfs_root __P((struct mount *, struct vnode **)); 190 191 #ifdef __HAVE_PROCFS_MACHDEP 192 struct vattr; 193 194 void procfs_machdep_allocvp(struct vnode *); 195 int procfs_machdep_rw(struct proc *, struct lwp *, struct pfsnode *, 196 struct uio *); 197 int procfs_machdep_getattr(struct vnode *, struct vattr *, struct proc *); 198 #endif 199 200 #endif /* _KERNEL */ 201