procfs.h revision 1.8
1 /* 2 * Copyright (c) 1993 The Regents of the University of California. 3 * Copyright (c) 1993 Jan-Simon Pendry 4 * 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 * From: 38 * Id: procfs.h,v 4.1 1993/12/17 10:47:45 jsp Rel 39 * 40 * $Id: procfs.h,v 1.8 1994/04/12 02:55:51 cgd Exp $ 41 */ 42 43 /* 44 * The different types of node in a procfs filesystem 45 */ 46 typedef enum { 47 Proot, /* the filesystem root */ 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 floating point 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 8 /* 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 80 #define NDEQ(ndp, s, len) \ 81 ((ndp)->ni_namelen == (len) && \ 82 (bcmp((s), (ndp)->ni_ptr, (len)) == 0)) 83 84 /* 85 * Format of a directory entry in /proc, ... 86 * This must map onto struct dirent (see <dirent.h>) 87 */ 88 #define PROCFS_NAMELEN 8 89 struct pfsdent { 90 u_long d_fileno; 91 u_short d_reclen; 92 u_short d_namlen; 93 char d_name[PROCFS_NAMELEN]; 94 }; 95 #define UIO_MX sizeof(struct pfsdent) 96 #define PROCFS_FILENO(pid, type) \ 97 (((type) == Proot) ? \ 98 ((pid) + 2) : \ 99 ((((pid)+1) << 4) + ((int) (type)))) 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 procfs_namemap procfs_namemap_t; 108 struct procfs_namemap { 109 const char *nm_name; 110 int nm_val; 111 }; 112 113 extern int procfs_getuserstr __P((struct uio *, char *, int *)); 114 extern procfs_namemap_t *procfs_findname __P((procfs_namemap_t *, char *, int)); 115 116 struct reg; 117 118 #define PFIND(pid) ((pid) ? pfind(pid) : &proc0) 119 extern int procfs_freevp __P((struct vnode *)); 120 extern int procfs_allocvp __P((struct mount *, struct vnode **, long, pfstype)); 121 extern struct vnode *procfs_findtextvp __P((struct proc *)); 122 extern int procfs_sstep __P((struct proc *)); 123 extern int procfs_read_regs __P((struct proc *, struct reg *)); 124 extern int procfs_write_regs __P((struct proc *, struct reg *)); 125 extern int procfs_donote __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 126 extern int procfs_doregs __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 127 extern int procfs_domem __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 128 extern int procfs_doctl __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 129 extern int procfs_dostatus __P((struct proc *, struct proc *, struct pfsnode *pfsp, struct uio *uio)); 130 extern int procfs_rw __P((struct vnode *, struct uio *, int, struct ucred *)); 131 132 /* functions to check whether or not files should be displayed */ 133 extern int procfs_validfile __P((struct proc *)); 134 extern int procfs_validfpregs __P((struct proc *)); 135 extern int procfs_validregs __P((struct proc *)); 136 137 #define PROCFS_LOCKED 0x01 138 #define PROCFS_WANT 0x02 139 140 extern struct vnodeops procfs_vnodeops; 141 extern struct vfsops procfs_vfsops; 142 143 /* 144 * Prototypes for procfs vnode ops 145 */ 146 int procfs_badop(); /* varargs */ 147 int procfs_rw __P(( 148 struct vnode *vp, 149 struct uio *uio, 150 int ioflag, 151 struct ucred *cred)); 152 int procfs_lookup __P(( 153 struct vnode *vp, 154 struct nameidata *ndp, 155 struct proc *p)); 156 #define procfs_create ((int (*) __P(( \ 157 struct nameidata *ndp, \ 158 struct vattr *vap, \ 159 struct proc *p))) procfs_badop) 160 #define procfs_mknod ((int (*) __P(( \ 161 struct nameidata *ndp, \ 162 struct vattr *vap, \ 163 struct ucred *cred, \ 164 struct proc *p))) procfs_badop) 165 int procfs_open __P(( 166 struct vnode *vp, 167 int mode, 168 struct ucred *cred, 169 struct proc *p)); 170 int procfs_close __P(( 171 struct vnode *vp, 172 int fflag, 173 struct ucred *cred, 174 struct proc *p)); 175 int procfs_access __P(( 176 struct vnode *vp, 177 int mode, 178 struct ucred *cred, 179 struct proc *p)); 180 int procfs_getattr __P(( 181 struct vnode *vp, 182 struct vattr *vap, 183 struct ucred *cred, 184 struct proc *p)); 185 int procfs_setattr __P(( 186 struct vnode *vp, 187 struct vattr *vap, 188 struct ucred *cred, 189 struct proc *p)); 190 #define procfs_read procfs_rw 191 #define procfs_write procfs_rw 192 int procfs_ioctl __P(( 193 struct vnode *vp, 194 int command, 195 caddr_t data, 196 int fflag, 197 struct ucred *cred, 198 struct proc *p)); 199 #define procfs_select ((int (*) __P(( \ 200 struct vnode *vp, \ 201 int which, \ 202 int fflags, \ 203 struct ucred *cred, \ 204 struct proc *p))) procfs_badop) 205 #define procfs_mmap ((int (*) __P(( \ 206 struct vnode *vp, \ 207 int fflags, \ 208 struct ucred *cred, \ 209 struct proc *p))) procfs_badop) 210 #define procfs_fsync ((int (*) __P(( \ 211 struct vnode *vp, \ 212 int fflags, \ 213 struct ucred *cred, \ 214 int waitfor, \ 215 struct proc *p))) procfs_badop) 216 #define procfs_seek ((int (*) __P(( \ 217 struct vnode *vp, \ 218 off_t oldoff, \ 219 off_t newoff, \ 220 struct ucred *cred))) procfs_badop) 221 #define procfs_remove ((int (*) __P(( \ 222 struct nameidata *ndp, \ 223 struct proc *p))) procfs_badop) 224 #define procfs_link ((int (*) __P(( \ 225 struct vnode *vp, \ 226 struct nameidata *ndp, \ 227 struct proc *p))) procfs_badop) 228 #define procfs_rename ((int (*) __P(( \ 229 struct nameidata *fndp, \ 230 struct nameidata *tdnp, \ 231 struct proc *p))) procfs_badop) 232 #define procfs_mkdir ((int (*) __P(( \ 233 struct nameidata *ndp, \ 234 struct vattr *vap, \ 235 struct proc *p))) procfs_badop) 236 #define procfs_rmdir ((int (*) __P(( \ 237 struct nameidata *ndp, \ 238 struct proc *p))) procfs_badop) 239 #define procfs_symlink ((int (*) __P(( \ 240 struct nameidata *ndp, \ 241 struct vattr *vap, \ 242 char *target, \ 243 struct proc *p))) procfs_badop) 244 int procfs_readdir __P(( 245 struct vnode *vp, 246 struct uio *uio, 247 struct ucred *cred, 248 int *eofflagp, 249 u_int *cookies, 250 int ncookies)); 251 int procfs_readlink __P(( 252 struct vnode *vp, 253 struct uio *uio, 254 struct ucred *cred)); 255 int procfs_abortop __P(( 256 struct nameidata *ndp)); 257 int procfs_inactive __P(( 258 struct vnode *vp, 259 struct proc *p)); 260 int procfs_reclaim __P(( 261 struct vnode *vp)); 262 #define procfs_lock ((int (*) __P(( \ 263 struct vnode *vp))) nullop) 264 #define procfs_unlock ((int (*) __P(( \ 265 struct vnode *vp))) nullop) 266 int procfs_bmap __P(( 267 struct vnode *vp, 268 daddr_t bn, 269 struct vnode **vpp, 270 daddr_t *bnp)); 271 #define procfs_strategy ((int (*) __P(( \ 272 struct buf *bp))) procfs_badop) 273 int procfs_print __P(( 274 struct vnode *vp)); 275 #define procfs_islocked ((int (*) __P(( \ 276 struct vnode *vp))) nullop) 277 #define procfs_advlock ((int (*) __P(( \ 278 struct vnode *vp, \ 279 caddr_t id, \ 280 int op, \ 281 struct flock *fl, \ 282 int flags))) procfs_badop) 283 284 #endif /* KERNEL */ 285
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