puffs_msgif.h revision 1.7
1 /* $NetBSD: puffs_msgif.h,v 1.7 2006/11/17 17:48:02 pooka Exp $ */ 2 3 /* 4 * Copyright (c) 2005, 2006 Antti Kantee. All Rights Reserved. 5 * 6 * Development of this software was supported by the 7 * Google Summer of Code program and the Ulla Tuominen Foundation. 8 * The Google SoC project was mentored by Bill Studenmund. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. The name of the company nor the name of the author may be used to 19 * endorse or promote products derived from this software without specific 20 * prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 23 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 25 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #ifndef _PUFFS_MSGIF_H_ 36 #define _PUFFS_MSGIF_H_ 37 38 #include <sys/param.h> 39 #include <sys/time.h> 40 #include <sys/ioccom.h> 41 #include <sys/uio.h> 42 #include <sys/vnode.h> 43 #include <sys/ucred.h> 44 #include <sys/statvfs.h> 45 #include <sys/dirent.h> 46 #include <sys/fcntl.h> 47 48 #define PUFFSOP_VFS 1 49 #define PUFFSOP_VN 2 50 #define PUFFSOPFLAG_FAF 0x10 /* fire-and-forget */ 51 52 #define PUFFSOP_OPCMASK 0x03 53 #define PUFFSOP_OPCLASS(a) ((a) & PUFFSOP_OPCMASK) 54 #define PUFFSOP_WANTREPLY(a) (((a) & PUFFSOPFLAG_FAF) == 0) 55 56 enum { 57 PUFFS_VFS_MOUNT, PUFFS_VFS_START, PUFFS_VFS_UNMOUNT, 58 PUFFS_VFS_ROOT, PUFFS_VFS_STATVFS, PUFFS_VFS_SYNC, 59 PUFFS_VFS_VGET, PUFFS_VFS_FHTOVP, PUFFS_VFS_VPTOFH, 60 PUFFS_VFS_INIT, PUFFS_VFS_DONE, PUFFS_VFS_SNAPSHOT, 61 PUFFS_VFS_EXTATTCTL 62 }; 63 #define PUFFS_VFS_MAX PUFFS_VFS_EXTATTCTL 64 65 enum { 66 PUFFS_VN_LOOKUP, PUFFS_VN_CREATE, PUFFS_VN_MKNOD, 67 PUFFS_VN_OPEN, PUFFS_VN_CLOSE, PUFFS_VN_ACCESS, 68 PUFFS_VN_GETATTR, PUFFS_VN_SETATTR, PUFFS_VN_READ, 69 PUFFS_VN_WRITE, PUFFS_VN_IOCTL, PUFFS_VN_FCNTL, 70 PUFFS_VN_POLL, PUFFS_VN_KQFILTER, PUFFS_VN_REVOKE, 71 PUFFS_VN_MMAP, PUFFS_VN_FSYNC, PUFFS_VN_SEEK, 72 PUFFS_VN_REMOVE, PUFFS_VN_LINK, PUFFS_VN_RENAME, 73 PUFFS_VN_MKDIR, PUFFS_VN_RMDIR, PUFFS_VN_SYMLINK, 74 PUFFS_VN_READDIR, PUFFS_VN_READLINK, PUFFS_VN_ABORTOP, 75 PUFFS_VN_INACTIVE, PUFFS_VN_RECLAIM, PUFFS_VN_LOCK, 76 PUFFS_VN_UNLOCK, PUFFS_VN_BMAP, PUFFS_VN_STRATEGY, 77 PUFFS_VN_PRINT, PUFFS_VN_ISLOCKED, PUFFS_VN_PATHCONF, 78 PUFFS_VN_ADVLOCK, PUFFS_VN_LEASE, PUFFS_VN_WHITEOUT, 79 PUFFS_VN_GETPAGES, PUFFS_VN_PUTPAGES, PUFFS_VN_GETEXTATTR, 80 PUFFS_VN_LISTEXTATTR, PUFFS_VN_OPENEXTATTR, PUFFS_VN_DELETEEXTATTR, 81 PUFFS_VN_SETEXTATTR 82 }; 83 #define PUFFS_VN_MAX PUFFS_VN_SETEXTATTR 84 85 #define PUFFSVERSION 0 /* meaning: *NO* versioning yet */ 86 #define PUFFSNAMESIZE 32 87 struct puffs_args { 88 int pa_vers; 89 int pa_fd; 90 unsigned int pa_flags; 91 size_t pa_maxreqlen; 92 char pa_name[PUFFSNAMESIZE]; /* name for puffs type */ 93 }; 94 #define PUFFSFLAG_ALLOWCTL 0x01 /* ioctl/fcntl commands allowed */ 95 #define PUFFSFLAG_NOCACHE 0x02 /* flush page cache immediately */ 96 #define PUFFSFLAG_MASK 0x03 97 98 /* 99 * This is the device minor number for the cloning device. Make it 100 * a high number "just in case", even though we don't want to open 101 * any specific devices currently. 102 */ 103 #define PUFFS_CLONER 0x7ffff 104 105 /* 106 * This is the structure that travels on the user-kernel interface. 107 * It is used to deliver ops to the user server and bring the results back 108 */ 109 struct puffs_req { 110 uint64_t preq_id; /* OUT/IN */ 111 uint8_t preq_opclass; /* OUT */ 112 uint8_t preq_optype; /* OUT */ 113 114 int preq_rv; /* IN */ 115 116 /* 117 * preq_cookie is the node cookie associated with the request. 118 * It always maps 1:1 to a vnode and should map to a userspace 119 * struct puffs_node. The cookie usually describes the first 120 * vnode argument of the VOP_POP() in question. 121 */ 122 void *preq_cookie; /* OUT */ 123 124 /* these come in from userspace twice (getop and putop) */ 125 void *preq_aux; /* IN/IN */ 126 size_t preq_auxlen; /* IN/IN */ 127 }; 128 129 #define PUFFS_REQFLAG_ADJBUF 0x01 130 131 /* 132 * Some operations have unknown size requirements. So as the first 133 * stab at handling it, do an extra bounce between the kernel and 134 * userspace. 135 */ 136 struct puffs_sizeop { 137 uint64_t pso_reqid; 138 139 uint8_t *pso_userbuf; 140 size_t pso_bufsize; 141 }; 142 143 /* 144 * Credentials for an operation. Can be either struct uucred for 145 * ops called from a credential context or NOCRED/FSCRED for ops 146 * called from within the kernel. It is up to the implementation 147 * if it makes a difference between these two and the super-user. 148 */ 149 struct puffs_cred { 150 struct uucred pcr_uuc; 151 uint8_t pcr_type; 152 uint8_t pcr_internal; 153 }; 154 #define PUFFCRED_TYPE_UUC 1 155 #define PUFFCRED_TYPE_INTERNAL 2 156 157 #define PUFFCRED_CRED_NOCRED 1 158 #define PUFFCRED_CRED_FSCRED 2 159 160 161 #define PUFFSSTARTOP _IOWR('p', 1, struct puffs_startreq) 162 #define PUFFSGETOP _IOWR('p', 2, struct puffs_req) 163 #define PUFFSPUTOP _IOWR('p', 3, struct puffs_req) 164 #define PUFFSSIZEOP _IOWR('p', 4, struct puffs_sizeop) 165 166 /* 167 * 4x MAXPHYS is the max size the system will attempt to copy, 168 * else treated as garbage 169 */ 170 #define PUFFS_REQ_MAXSIZE 4*MAXPHYS 171 #define PUFFS_REQSTRUCT_MAX 4096 /* XXX: approxkludge */ 172 173 #define PUFFS_TOMOVE(a,b) (MIN((a), b->pmp_req_maxsize - PUFFS_REQSTRUCT_MAX)) 174 175 /* puffs struct componentname, for userspace */ 176 struct puffs_cn { 177 /* args */ 178 u_long pcn_nameiop; /* namei operation */ 179 u_long pcn_flags; /* flags */ 180 pid_t pcn_pid; /* caller pid */ 181 struct puffs_cred pcn_cred; /* caller creds */ 182 183 /* shared */ 184 char pcn_name[MAXPATHLEN]; /* path to lookup */ 185 long pcn_namelen; /* length of path */ 186 }; 187 188 /* 189 * XXX: figure out what to do with these, copied from namei.h for now 190 */ 191 #define PUFFSLOOKUP_LOOKUP 0 /* perform name lookup only */ 192 #define PUFFSLOOKUP_CREATE 1 /* setup for file creation */ 193 #define PUFFSLOOKUP_DELETE 2 /* setup for file deletion */ 194 #define PUFFSLOOKUP_RENAME 3 /* setup for file renaming */ 195 #define PUFFSLOOKUP_OPMASK 3 /* mask for operation */ 196 197 #define PUFFSLOOKUP_FOLLOW 0x04 /* follow symlinks */ 198 #define PUFFSLOOKUP_NOFOLLOW 0x08 /* don't follow symlinks */ 199 #define PUFFSLOOKUP_OPTIONS 0x0c 200 201 202 struct puffs_startreq { 203 void *psr_cookie; /* IN: root node cookie */ 204 fsid_t psr_fsidx; /* OUT: fsid value */ 205 }; 206 207 /* 208 * aux structures for vfs operations. 209 */ 210 struct puffs_vfsreq_unmount { 211 int pvfsr_flags; 212 pid_t pvfsr_pid; 213 }; 214 215 struct puffs_vfsreq_statvfs { 216 struct statvfs pvfsr_sb; 217 pid_t pvfsr_pid; 218 }; 219 220 struct puffs_vfsreq_sync { 221 struct puffs_cred pvfsr_cred; 222 pid_t pvfsr_pid; 223 int pvfsr_waitfor; 224 }; 225 226 /* 227 * aux structures for vnode operations. 228 */ 229 230 struct puffs_vnreq_lookup { 231 struct puffs_cn pvnr_cn; /* OUT */ 232 void *pvnr_newnode; /* IN */ 233 enum vtype pvnr_vtype; /* IN */ 234 voff_t pvnr_size; /* IN */ 235 dev_t pvnr_rdev; /* IN */ 236 }; 237 238 struct puffs_vnreq_create { 239 struct puffs_cn pvnr_cn; /* OUT */ 240 struct vattr pvnr_va; /* OUT */ 241 void *pvnr_newnode; /* IN */ 242 }; 243 244 struct puffs_vnreq_mknod { 245 struct puffs_cn pvnr_cn; /* OUT */ 246 struct vattr pvnr_va; /* OUT */ 247 void *pvnr_newnode; /* IN */ 248 }; 249 250 struct puffs_vnreq_open { 251 struct puffs_cred pvnr_cred; /* OUT */ 252 pid_t pvnr_pid; /* OUT */ 253 int pvnr_mode; /* OUT */ 254 }; 255 256 struct puffs_vnreq_close { 257 struct puffs_cred pvnr_cred; /* OUT */ 258 pid_t pvnr_pid; /* OUT */ 259 int pvnr_fflag; /* OUT */ 260 }; 261 262 struct puffs_vnreq_access { 263 struct puffs_cred pvnr_cred; /* OUT */ 264 pid_t pvnr_pid; /* OUT */ 265 int pvnr_mode; /* OUT */ 266 }; 267 268 #define puffs_vnreq_setattr puffs_vnreq_setgetattr 269 #define puffs_vnreq_getattr puffs_vnreq_setgetattr 270 struct puffs_vnreq_setgetattr { 271 struct puffs_cred pvnr_cred; /* OUT */ 272 struct vattr pvnr_va; /* IN/OUT (op depend) */ 273 pid_t pvnr_pid; /* OUT */ 274 }; 275 276 #define puffs_vnreq_read puffs_vnreq_readwrite 277 #define puffs_vnreq_write puffs_vnreq_readwrite 278 struct puffs_vnreq_readwrite { 279 struct puffs_cred pvnr_cred; /* OUT */ 280 off_t pvnr_offset; /* OUT */ 281 size_t pvnr_resid; /* IN/OUT */ 282 int pvnr_ioflag; /* OUT */ 283 284 uint8_t pvnr_data[0]; /* IN/OUT (wr/rd) */ 285 }; 286 287 #define puffs_vnreq_ioctl puffs_vnreq_fcnioctl 288 #define puffs_vnreq_fcntl puffs_vnreq_fcnioctl 289 struct puffs_vnreq_fcnioctl { 290 struct puffs_cred pvnr_cred; 291 u_long pvnr_command; 292 pid_t pvnr_pid; 293 int pvnr_fflag; 294 295 void *pvnr_data; 296 size_t pvnr_datalen; 297 int pvnr_copyback; 298 }; 299 300 struct puffs_vnreq_poll { 301 int pvnr_events; /* OUT */ 302 pid_t pvnr_pid; /* OUT */ 303 }; 304 305 struct puffs_vnreq_revoke { 306 int pvnr_flags; /* OUT */ 307 }; 308 309 struct puffs_vnreq_fsync { 310 struct puffs_cred pvnr_cred; /* OUT */ 311 off_t pvnr_offlo; /* OUT */ 312 off_t pvnr_offhi; /* OUT */ 313 pid_t pvnr_pid; /* OUT */ 314 int pvnr_flags; /* OUT */ 315 }; 316 317 struct puffs_vnreq_seek { 318 struct puffs_cred pvnr_cred; /* OUT */ 319 off_t pvnr_oldoff; /* OUT */ 320 off_t pvnr_newoff; /* OUT */ 321 }; 322 323 struct puffs_vnreq_remove { 324 struct puffs_cn pvnr_cn; /* OUT */ 325 void *pvnr_cookie_targ; /* OUT */ 326 }; 327 328 struct puffs_vnreq_mkdir { 329 struct puffs_cn pvnr_cn; /* OUT */ 330 struct vattr pvnr_va; /* OUT */ 331 void *pvnr_newnode; /* IN */ 332 }; 333 334 struct puffs_vnreq_rmdir { 335 struct puffs_cn pvnr_cn; /* OUT */ 336 void *pvnr_cookie_targ; /* OUT */ 337 }; 338 339 struct puffs_vnreq_link { 340 struct puffs_cn pvnr_cn; /* OUT */ 341 void *pvnr_cookie_targ; /* OUT */ 342 }; 343 344 struct puffs_vnreq_rename { 345 struct puffs_cn pvnr_cn_src; /* OUT */ 346 struct puffs_cn pvnr_cn_targ; /* OUT */ 347 void *pvnr_cookie_src; /* OUT */ 348 void *pvnr_cookie_targ; /* OUT */ 349 void *pvnr_cookie_targdir; /* OUT */ 350 }; 351 352 struct puffs_vnreq_symlink { 353 struct puffs_cn pvnr_cn; /* OUT */ 354 struct vattr pvnr_va; /* OUT */ 355 void *pvnr_newnode; /* IN */ 356 char pvnr_link[MAXPATHLEN]; /* OUT */ 357 }; 358 359 struct puffs_vnreq_readdir { 360 struct puffs_cred pvnr_cred; /* OUT */ 361 off_t pvnr_offset; /* IN/OUT */ 362 size_t pvnr_resid; /* IN/OUT */ 363 364 struct dirent pvnr_dent[0]; /* IN */ 365 }; 366 367 struct puffs_vnreq_readlink { 368 struct puffs_cred pvnr_cred; /* OUT */ 369 size_t pvnr_linklen; /* IN */ 370 char pvnr_link[MAXPATHLEN]; /* IN, XXX */ 371 }; 372 373 struct puffs_vnreq_reclaim { 374 pid_t pvnr_pid; /* OUT */ 375 }; 376 377 struct puffs_vnreq_inactive { 378 pid_t pvnr_pid; /* OUT */ 379 int pvnr_backendrefs; /* IN */ 380 }; 381 382 /* XXX: get rid of alltogether */ 383 struct puffs_vnreq_print { 384 /* empty */ 385 }; 386 387 struct puffs_vnreq_pathconf { 388 int pvnr_name; /* OUT */ 389 int pvnr_retval; /* IN */ 390 }; 391 392 struct puffs_vnreq_advlock { 393 struct flock pvnr_fl; /* OUT */ 394 void *pvnr_id; /* OUT */ 395 int pvnr_op; /* OUT */ 396 int pvnr_flags; /* OUT */ 397 }; 398 399 /* notyet */ 400 #if 0 401 struct puffs_vnreq_kqfilter { }; 402 struct puffs_vnreq_islocked { }; 403 struct puffs_vnreq_lease { }; 404 #endif 405 struct puffs_vnreq_getpages { }; 406 struct puffs_vnreq_putpages { }; 407 struct puffs_vnreq_mmap { }; 408 struct puffs_vnreq_getextattr { }; 409 struct puffs_vnreq_setextattr { }; 410 struct puffs_vnreq_listextattr { }; 411 412 #ifdef _KERNEL 413 #define PUFFS_VFSREQ(a) \ 414 struct puffs_vfsreq_##a a##_arg; \ 415 memset(&a##_arg, 0, sizeof(struct puffs_vfsreq_##a)) 416 417 #define PUFFS_VNREQ(a) \ 418 struct puffs_vnreq_##a a##_arg; \ 419 memset(&a##_arg, 0, sizeof(struct puffs_vnreq_##a)) 420 #endif 421 422 #endif /* _PUFFS_MSGIF_H_ */ 423
Indexes created Mon Sep 29 21:09:56 GMT 2025