procfs.h revision 1.6
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 1.6 1994/01/28 07:03:16 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) << 3) + ((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 #define PROCFS_LOCKED 0x01 133 #define PROCFS_WANT 0x02 134 135 extern struct vnodeops procfs_vnodeops; 136 extern struct vfsops procfs_vfsops; 137 138 /* 139 * Prototypes for procfs vnode ops 140 */ 141 int procfs_badop(); /* varargs */ 142 int procfs_rw __P(( 143 struct vnode *vp, 144 struct uio *uio, 145 int ioflag, 146 struct ucred *cred)); 147 int procfs_lookup __P(( 148 struct vnode *vp, 149 struct nameidata *ndp, 150 struct proc *p)); 151 #define procfs_create ((int (*) __P(( \ 152 struct nameidata *ndp, \ 153 struct vattr *vap, \ 154 struct proc *p))) procfs_badop) 155 #define procfs_mknod ((int (*) __P(( \ 156 struct nameidata *ndp, \ 157 struct vattr *vap, \ 158 struct ucred *cred, \ 159 struct proc *p))) procfs_badop) 160 int procfs_open __P(( 161 struct vnode *vp, 162 int mode, 163 struct ucred *cred, 164 struct proc *p)); 165 int procfs_close __P(( 166 struct vnode *vp, 167 int fflag, 168 struct ucred *cred, 169 struct proc *p)); 170 int procfs_access __P(( 171 struct vnode *vp, 172 int mode, 173 struct ucred *cred, 174 struct proc *p)); 175 int procfs_getattr __P(( 176 struct vnode *vp, 177 struct vattr *vap, 178 struct ucred *cred, 179 struct proc *p)); 180 int procfs_setattr __P(( 181 struct vnode *vp, 182 struct vattr *vap, 183 struct ucred *cred, 184 struct proc *p)); 185 #define procfs_read procfs_rw 186 #define procfs_write procfs_rw 187 int procfs_ioctl __P(( 188 struct vnode *vp, 189 int command, 190 caddr_t data, 191 int fflag, 192 struct ucred *cred, 193 struct proc *p)); 194 #define procfs_select ((int (*) __P(( \ 195 struct vnode *vp, \ 196 int which, \ 197 int fflags, \ 198 struct ucred *cred, \ 199 struct proc *p))) procfs_badop) 200 #define procfs_mmap ((int (*) __P(( \ 201 struct vnode *vp, \ 202 int fflags, \ 203 struct ucred *cred, \ 204 struct proc *p))) procfs_badop) 205 #define procfs_fsync ((int (*) __P(( \ 206 struct vnode *vp, \ 207 int fflags, \ 208 struct ucred *cred, \ 209 int waitfor, \ 210 struct proc *p))) procfs_badop) 211 #define procfs_seek ((int (*) __P(( \ 212 struct vnode *vp, \ 213 off_t oldoff, \ 214 off_t newoff, \ 215 struct ucred *cred))) procfs_badop) 216 #define procfs_remove ((int (*) __P(( \ 217 struct nameidata *ndp, \ 218 struct proc *p))) procfs_badop) 219 #define procfs_link ((int (*) __P(( \ 220 struct vnode *vp, \ 221 struct nameidata *ndp, \ 222 struct proc *p))) procfs_badop) 223 #define procfs_rename ((int (*) __P(( \ 224 struct nameidata *fndp, \ 225 struct nameidata *tdnp, \ 226 struct proc *p))) procfs_badop) 227 #define procfs_mkdir ((int (*) __P(( \ 228 struct nameidata *ndp, \ 229 struct vattr *vap, \ 230 struct proc *p))) procfs_badop) 231 #define procfs_rmdir ((int (*) __P(( \ 232 struct nameidata *ndp, \ 233 struct proc *p))) procfs_badop) 234 #define procfs_symlink ((int (*) __P(( \ 235 struct nameidata *ndp, \ 236 struct vattr *vap, \ 237 char *target, \ 238 struct proc *p))) procfs_badop) 239 int procfs_readdir __P(( 240 struct vnode *vp, 241 struct uio *uio, 242 struct ucred *cred, 243 int *eofflagp, 244 u_int *cookies, 245 int ncookies)); 246 int procfs_readlink __P(( 247 struct vnode *vp, 248 struct uio *uio, 249 struct ucred *cred)); 250 int procfs_abortop __P(( 251 struct nameidata *ndp)); 252 int procfs_inactive __P(( 253 struct vnode *vp, 254 struct proc *p)); 255 int procfs_reclaim __P(( 256 struct vnode *vp)); 257 #define procfs_lock ((int (*) __P(( \ 258 struct vnode *vp))) nullop) 259 #define procfs_unlock ((int (*) __P(( \ 260 struct vnode *vp))) nullop) 261 int procfs_bmap __P(( 262 struct vnode *vp, 263 daddr_t bn, 264 struct vnode **vpp, 265 daddr_t *bnp)); 266 #define procfs_strategy ((int (*) __P(( \ 267 struct buf *bp))) procfs_badop) 268 int procfs_print __P(( 269 struct vnode *vp)); 270 #define procfs_islocked ((int (*) __P(( \ 271 struct vnode *vp))) nullop) 272 #define procfs_advlock ((int (*) __P(( \ 273 struct vnode *vp, \ 274 caddr_t id, \ 275 int op, \ 276 struct flock *fl, \ 277 int flags))) procfs_badop) 278 279 #endif /* KERNEL */ 280
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