1 | /* $NetBSD: puffs.h,v 1.127 2015/11/12 17:51:05 christos Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 2005, 2006, 2007 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 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS |
20 | * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
21 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
22 | * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
25 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
29 | * SUCH DAMAGE. |
30 | */ |
31 | |
32 | #ifndef _PUFFS_H_ |
33 | #define _PUFFS_H_ |
34 | |
35 | #include <sys/param.h> |
36 | #include <sys/types.h> |
37 | #include <sys/mount.h> |
38 | #include <sys/namei.h> |
39 | #include <sys/stat.h> |
40 | #include <sys/statvfs.h> |
41 | #include <sys/time.h> |
42 | #include <sys/vnode.h> |
43 | |
44 | #include <fs/puffs/puffs_msgif.h> |
45 | |
46 | #include <mntopts.h> |
47 | #include <stdbool.h> |
48 | #include <string.h> |
49 | |
50 | /* forwards */ |
51 | struct puffs_cc; |
52 | |
53 | struct puffs_getreq; |
54 | struct puffs_cred; |
55 | struct puffs_newinfo; |
56 | |
57 | /* paths */ |
58 | struct puffs_pathobj { |
59 | void *po_path; |
60 | size_t po_len; |
61 | uint32_t po_hash; |
62 | }; |
63 | |
64 | /* for prefix rename */ |
65 | struct puffs_pathinfo { |
66 | struct puffs_pathobj *pi_old; |
67 | struct puffs_pathobj *pi_new; |
68 | }; |
69 | |
70 | /* describes one segment cached in the kernel */ |
71 | struct puffs_kcache { |
72 | off_t pkc_start; |
73 | off_t pkc_end; |
74 | |
75 | LIST_ENTRY(puffs_kcache) pkc_entries; |
76 | }; |
77 | |
78 | /* XXX: might disappear from here into a private header */ |
79 | struct puffs_node { |
80 | off_t pn_size; |
81 | int pn_flags; |
82 | int pn_nlookup; |
83 | struct vattr pn_va; |
84 | |
85 | void *pn_data; /* private data */ |
86 | |
87 | struct puffs_pathobj pn_po; /* PUFFS_FLAG_BUILDPATH */ |
88 | |
89 | struct puffs_usermount *pn_mnt; |
90 | LIST_ENTRY(puffs_node) pn_entries; |
91 | |
92 | LIST_HEAD(,puffs_kcache)pn_cacheinfo; /* PUFFS_KFLAG_CACHE */ |
93 | }; |
94 | #define PUFFS_NODE_REMOVED 0x01 /* not on entry list */ |
95 | |
96 | |
97 | struct puffs_usermount; |
98 | |
99 | /* |
100 | * megaXXX: these are values from inside _KERNEL |
101 | * need to work on the translation for ALL the necessary values. |
102 | */ |
103 | #define PUFFS_VNOVAL (-1) |
104 | |
105 | #define PUFFS_IO_APPEND 0x020 |
106 | #define PUFFS_IO_NDELAY 0x100 |
107 | |
108 | #define PUFFS_VEXEC 01 |
109 | #define PUFFS_VWRITE 02 |
110 | #define PUFFS_VREAD 04 |
111 | |
112 | #define PUFFS_FSYNC_DATAONLY 0x0002 |
113 | #define PUFFS_FSYNC_CACHE 0x0100 |
114 | |
115 | /* |
116 | * xflags for setattr_ttl and write2 |
117 | */ |
118 | #define PUFFS_SETATTR_FAF 0x1 |
119 | #define PUFFS_WRITE_FAF 0x1 |
120 | |
121 | #define PUFFS_EXTATTR_LIST_LENPREFIX 1 |
122 | /* |
123 | * Magic constants |
124 | */ |
125 | #define PUFFS_CC_STACKSHIFT_DEFAULT 18 |
126 | |
127 | struct puffs_cn { |
128 | struct puffs_kcn *pcn_pkcnp; /* kernel input */ |
129 | struct puffs_cred *pcn_cred; /* cred used for lookup */ |
130 | |
131 | struct puffs_pathobj pcn_po_full; /* PUFFS_FLAG_BUILDPATH */ |
132 | }; |
133 | #define pcn_nameiop pcn_pkcnp->pkcn_nameiop |
134 | #define pcn_flags pcn_pkcnp->pkcn_flags |
135 | #define pcn_name pcn_pkcnp->pkcn_name |
136 | #define pcn_namelen pcn_pkcnp->pkcn_namelen |
137 | #define pcn_consume pcn_pkcnp->pkcn_consume |
138 | |
139 | /* |
140 | * Puffs options to mount |
141 | */ |
142 | /* kernel */ |
143 | #define PUFFSMOPT_NAMECACHE { "namecache", 1, PUFFS_KFLAG_NOCACHE_NAME, 1 } |
144 | #define PUFFSMOPT_PAGECACHE { "pagecache", 1, PUFFS_KFLAG_NOCACHE_PAGE, 1 } |
145 | #define PUFFSMOPT_ATTRCACHE { "attrcache", 1, PUFFS_KFLAG_NOCACHE_ATTR, 1 } |
146 | #define PUFFSMOPT_CACHE { "cache", 1, PUFFS_KFLAG_NOCACHE, 1 } |
147 | #define PUFFSMOPT_ALLOPS { "allops", 0, PUFFS_KFLAG_ALLOPS, 1 } |
148 | |
149 | /* libpuffs */ |
150 | #define PUFFSMOPT_DUMP { "dump", 0, PUFFS_FLAG_OPDUMP, 1 } |
151 | |
152 | #define PUFFSMOPT_STD \ |
153 | PUFFSMOPT_NAMECACHE, \ |
154 | PUFFSMOPT_PAGECACHE, \ |
155 | PUFFSMOPT_ATTRCACHE, \ |
156 | PUFFSMOPT_CACHE, \ |
157 | PUFFSMOPT_ALLOPS, \ |
158 | PUFFSMOPT_DUMP |
159 | |
160 | extern const struct mntopt puffsmopts[]; /* puffs.c */ |
161 | |
162 | /* callbacks for operations */ |
163 | struct puffs_ops { |
164 | int (*puffs_fs_unmount)(struct puffs_usermount *, int); |
165 | int (*puffs_fs_statvfs)(struct puffs_usermount *, struct statvfs *); |
166 | int (*puffs_fs_sync)(struct puffs_usermount *, int, |
167 | const struct puffs_cred *); |
168 | int (*puffs_fs_fhtonode)(struct puffs_usermount *, void *, size_t, |
169 | struct puffs_newinfo *); |
170 | int (*puffs_fs_nodetofh)(struct puffs_usermount *, puffs_cookie_t, |
171 | void *, size_t *); |
172 | int (*puffs_fs_extattrctl)(struct puffs_usermount *, int, |
173 | puffs_cookie_t, int, int, const char *); |
174 | |
175 | int (*puffs_node_lookup)(struct puffs_usermount *, |
176 | puffs_cookie_t, struct puffs_newinfo *, const struct puffs_cn *); |
177 | int (*puffs_node_create)(struct puffs_usermount *, |
178 | puffs_cookie_t, struct puffs_newinfo *, const struct puffs_cn *, |
179 | const struct vattr *); |
180 | int (*puffs_node_mknod)(struct puffs_usermount *, |
181 | puffs_cookie_t, struct puffs_newinfo *, const struct puffs_cn *, |
182 | const struct vattr *); |
183 | int (*puffs_node_open)(struct puffs_usermount *, |
184 | puffs_cookie_t, int, const struct puffs_cred *); |
185 | int (*puffs_node_close)(struct puffs_usermount *, |
186 | puffs_cookie_t, int, const struct puffs_cred *); |
187 | int (*puffs_node_access)(struct puffs_usermount *, |
188 | puffs_cookie_t, int, const struct puffs_cred *); |
189 | int (*puffs_node_getattr)(struct puffs_usermount *, |
190 | puffs_cookie_t, struct vattr *, const struct puffs_cred *); |
191 | int (*puffs_node_setattr)(struct puffs_usermount *, |
192 | puffs_cookie_t, const struct vattr *, const struct puffs_cred *); |
193 | int (*puffs_node_poll)(struct puffs_usermount *, puffs_cookie_t, int *); |
194 | int (*puffs_node_mmap)(struct puffs_usermount *, |
195 | puffs_cookie_t, vm_prot_t, const struct puffs_cred *); |
196 | int (*puffs_node_fsync)(struct puffs_usermount *, |
197 | puffs_cookie_t, const struct puffs_cred *, int, off_t, off_t); |
198 | int (*puffs_node_seek)(struct puffs_usermount *, |
199 | puffs_cookie_t, off_t, off_t, const struct puffs_cred *); |
200 | int (*puffs_node_remove)(struct puffs_usermount *, |
201 | puffs_cookie_t, puffs_cookie_t, const struct puffs_cn *); |
202 | int (*puffs_node_link)(struct puffs_usermount *, |
203 | puffs_cookie_t, puffs_cookie_t, const struct puffs_cn *); |
204 | int (*puffs_node_rename)(struct puffs_usermount *, |
205 | puffs_cookie_t, puffs_cookie_t, const struct puffs_cn *, |
206 | puffs_cookie_t, puffs_cookie_t, const struct puffs_cn *); |
207 | int (*puffs_node_mkdir)(struct puffs_usermount *, |
208 | puffs_cookie_t, struct puffs_newinfo *, const struct puffs_cn *, |
209 | const struct vattr *); |
210 | int (*puffs_node_rmdir)(struct puffs_usermount *, |
211 | puffs_cookie_t, puffs_cookie_t, const struct puffs_cn *); |
212 | int (*puffs_node_symlink)(struct puffs_usermount *, |
213 | puffs_cookie_t, struct puffs_newinfo *, const struct puffs_cn *, |
214 | const struct vattr *, |
215 | const char *); |
216 | int (*puffs_node_readdir)(struct puffs_usermount *, |
217 | puffs_cookie_t, struct dirent *, off_t *, size_t *, |
218 | const struct puffs_cred *, int *, off_t *, size_t *); |
219 | int (*puffs_node_readlink)(struct puffs_usermount *, |
220 | puffs_cookie_t, const struct puffs_cred *, char *, size_t *); |
221 | int (*puffs_node_reclaim)(struct puffs_usermount *, puffs_cookie_t); |
222 | int (*puffs_node_inactive)(struct puffs_usermount *, puffs_cookie_t); |
223 | int (*puffs_node_print)(struct puffs_usermount *, puffs_cookie_t); |
224 | int (*puffs_node_pathconf)(struct puffs_usermount *, |
225 | puffs_cookie_t, int, register_t *); |
226 | int (*puffs_node_advlock)(struct puffs_usermount *, |
227 | puffs_cookie_t, void *, int, struct flock *, int); |
228 | int (*puffs_node_read)(struct puffs_usermount *, puffs_cookie_t, |
229 | uint8_t *, off_t, size_t *, const struct puffs_cred *, int); |
230 | int (*puffs_node_write)(struct puffs_usermount *, puffs_cookie_t, |
231 | uint8_t *, off_t, size_t *, const struct puffs_cred *, int); |
232 | int (*puffs_node_abortop)(struct puffs_usermount *, puffs_cookie_t, |
233 | const struct puffs_cn *); |
234 | int (*puffs_node_getextattr)(struct puffs_usermount *, puffs_cookie_t, |
235 | int, const char *, size_t *, uint8_t *, size_t *, |
236 | const struct puffs_cred *); |
237 | int (*puffs_node_setextattr)(struct puffs_usermount *, puffs_cookie_t, |
238 | int, const char *, uint8_t *, size_t *, const struct puffs_cred *); |
239 | int (*puffs_node_listextattr)(struct puffs_usermount *, puffs_cookie_t, |
240 | int, size_t *, uint8_t *, size_t *, int, const struct puffs_cred *); |
241 | int (*puffs_node_deleteextattr)(struct puffs_usermount *, |
242 | puffs_cookie_t, int, const char *, const struct puffs_cred *); |
243 | int (*puffs_node_getattr_ttl)(struct puffs_usermount *, |
244 | puffs_cookie_t, struct vattr *, const struct puffs_cred *, |
245 | struct timespec *); |
246 | int (*puffs_node_setattr_ttl)(struct puffs_usermount *, |
247 | puffs_cookie_t, struct vattr *, const struct puffs_cred *, |
248 | struct timespec *, int); |
249 | int (*puffs_node_write2)(struct puffs_usermount *, puffs_cookie_t, |
250 | uint8_t *, off_t, size_t *, const struct puffs_cred *, int, int); |
251 | int (*puffs_node_reclaim2)(struct puffs_usermount *, |
252 | puffs_cookie_t, int); |
253 | int (*puffs_node_open2)(struct puffs_usermount *, |
254 | puffs_cookie_t, int, const struct puffs_cred *, int *); |
255 | int (*puffs_node_fallocate)(struct puffs_usermount *, |
256 | puffs_cookie_t, off_t, off_t); |
257 | int (*puffs_node_fdiscard)(struct puffs_usermount *, |
258 | puffs_cookie_t, off_t, off_t); |
259 | |
260 | void *puffs_ops_spare[26]; |
261 | }; |
262 | |
263 | typedef int (*pu_pathbuild_fn)(struct puffs_usermount *, |
264 | const struct puffs_pathobj *, |
265 | const struct puffs_pathobj *, size_t, |
266 | struct puffs_pathobj *); |
267 | typedef int (*pu_pathtransform_fn)(struct puffs_usermount *, |
268 | const struct puffs_pathobj *, |
269 | const struct puffs_cn *, |
270 | struct puffs_pathobj *); |
271 | typedef int (*pu_pathcmp_fn)(struct puffs_usermount *, struct puffs_pathobj *, |
272 | struct puffs_pathobj *, size_t, int); |
273 | typedef void (*pu_pathfree_fn)(struct puffs_usermount *, |
274 | struct puffs_pathobj *); |
275 | typedef int (*pu_namemod_fn)(struct puffs_usermount *, |
276 | struct puffs_pathobj *, struct puffs_cn *); |
277 | |
278 | typedef void (*pu_errnotify_fn)(struct puffs_usermount *, |
279 | uint8_t, int, const char *, puffs_cookie_t); |
280 | |
281 | typedef void (*pu_prepost_fn)(struct puffs_usermount *); |
282 | |
283 | typedef struct puffs_node *(*pu_cmap_fn)(struct puffs_usermount *, |
284 | puffs_cookie_t); |
285 | |
286 | enum { |
287 | PUFFS_STATE_BEFOREMOUNT, PUFFS_STATE_RUNNING, |
288 | PUFFS_STATE_UNMOUNTING, PUFFS_STATE_UNMOUNTED |
289 | }; |
290 | |
291 | #define PUFFS_FLAG_BUILDPATH 0x80000000 /* node paths in pnode */ |
292 | #define PUFFS_FLAG_OPDUMP 0x40000000 /* dump all operations */ |
293 | #define PUFFS_FLAG_HASHPATH 0x20000000 /* speedup: hash paths */ |
294 | #define PUFFS_FLAG_PNCOOKIE 0x10000000 /* cookies are pnodes */ |
295 | #define PUFFS_FLAG_MASK 0xf0000000 |
296 | |
297 | #define PUFFS_FLAG_KERN(a) ((a) & PUFFS_KFLAG_MASK) |
298 | #define PUFFS_FLAG_LIB(a) ((a) & PUFFS_FLAG_MASK) |
299 | |
300 | /* blocking mode argument */ |
301 | #define PUFFSDEV_BLOCK 0 |
302 | #define PUFFSDEV_NONBLOCK 1 |
303 | |
304 | #define PUFFS_STACKSIZE_DEFAULT (1<<PUFFS_CC_STACKSHIFT_DEFAULT) |
305 | #define PUFFS_STACKSIZE_MIN ((size_t)-1) |
306 | |
307 | #define DENT_DOT 0 |
308 | #define DENT_DOTDOT 1 |
309 | #define DENT_ADJ(a) ((a)-2) /* nth request means dir's n-2th */ |
310 | |
311 | |
312 | /* |
313 | * protos |
314 | */ |
315 | |
316 | #define PUFFSOP_PROTOS(fsname) \ |
317 | int fsname##_fs_unmount(struct puffs_usermount *, int); \ |
318 | int fsname##_fs_statvfs(struct puffs_usermount *, \ |
319 | struct statvfs *); \ |
320 | int fsname##_fs_sync(struct puffs_usermount *, int, \ |
321 | const struct puffs_cred *cred); \ |
322 | int fsname##_fs_fhtonode(struct puffs_usermount *, void *, \ |
323 | size_t, struct puffs_newinfo *); \ |
324 | int fsname##_fs_nodetofh(struct puffs_usermount *, \ |
325 | puffs_cookie_t, void *, size_t *); \ |
326 | int fsname##_fs_extattrctl(struct puffs_usermount *, int, \ |
327 | puffs_cookie_t, int, int, const char *); \ |
328 | \ |
329 | int fsname##_node_lookup(struct puffs_usermount *, \ |
330 | puffs_cookie_t, struct puffs_newinfo *, \ |
331 | const struct puffs_cn *); \ |
332 | int fsname##_node_create(struct puffs_usermount *, \ |
333 | puffs_cookie_t, struct puffs_newinfo *, \ |
334 | const struct puffs_cn *, const struct vattr *); \ |
335 | int fsname##_node_mknod(struct puffs_usermount *, \ |
336 | puffs_cookie_t, struct puffs_newinfo *, \ |
337 | const struct puffs_cn *, const struct vattr *); \ |
338 | int fsname##_node_open(struct puffs_usermount *, \ |
339 | puffs_cookie_t, int, const struct puffs_cred *); \ |
340 | int fsname##_node_close(struct puffs_usermount *, \ |
341 | puffs_cookie_t, int, const struct puffs_cred *); \ |
342 | int fsname##_node_access(struct puffs_usermount *, \ |
343 | puffs_cookie_t, int, const struct puffs_cred *); \ |
344 | int fsname##_node_getattr(struct puffs_usermount *, \ |
345 | puffs_cookie_t, struct vattr *, const struct puffs_cred *); \ |
346 | int fsname##_node_setattr(struct puffs_usermount *, \ |
347 | puffs_cookie_t, const struct vattr *, \ |
348 | const struct puffs_cred *); \ |
349 | int fsname##_node_poll(struct puffs_usermount *, \ |
350 | puffs_cookie_t, int *); \ |
351 | int fsname##_node_mmap(struct puffs_usermount *, \ |
352 | puffs_cookie_t, vm_prot_t, const struct puffs_cred *); \ |
353 | int fsname##_node_fsync(struct puffs_usermount *, \ |
354 | puffs_cookie_t, const struct puffs_cred *, int, \ |
355 | off_t, off_t); \ |
356 | int fsname##_node_seek(struct puffs_usermount *, \ |
357 | puffs_cookie_t, off_t, off_t, const struct puffs_cred *); \ |
358 | int fsname##_node_remove(struct puffs_usermount *, \ |
359 | puffs_cookie_t, puffs_cookie_t, const struct puffs_cn *); \ |
360 | int fsname##_node_link(struct puffs_usermount *, \ |
361 | puffs_cookie_t, puffs_cookie_t, const struct puffs_cn *); \ |
362 | int fsname##_node_rename(struct puffs_usermount *, \ |
363 | puffs_cookie_t, puffs_cookie_t, const struct puffs_cn *, \ |
364 | puffs_cookie_t, puffs_cookie_t, const struct puffs_cn *); \ |
365 | int fsname##_node_mkdir(struct puffs_usermount *, \ |
366 | puffs_cookie_t, struct puffs_newinfo *, \ |
367 | const struct puffs_cn *, const struct vattr *); \ |
368 | int fsname##_node_rmdir(struct puffs_usermount *, \ |
369 | puffs_cookie_t, puffs_cookie_t, const struct puffs_cn *); \ |
370 | int fsname##_node_symlink(struct puffs_usermount *, \ |
371 | puffs_cookie_t, struct puffs_newinfo *, \ |
372 | const struct puffs_cn *, const struct vattr *, \ |
373 | const char *); \ |
374 | int fsname##_node_readdir(struct puffs_usermount *, \ |
375 | puffs_cookie_t, struct dirent *, off_t *, size_t *, \ |
376 | const struct puffs_cred *, int *, off_t *, size_t *); \ |
377 | int fsname##_node_readlink(struct puffs_usermount *, \ |
378 | puffs_cookie_t, const struct puffs_cred *, char *, \ |
379 | size_t *); \ |
380 | int fsname##_node_reclaim(struct puffs_usermount *, \ |
381 | puffs_cookie_t); \ |
382 | int fsname##_node_inactive(struct puffs_usermount *, \ |
383 | puffs_cookie_t); \ |
384 | int fsname##_node_print(struct puffs_usermount *, \ |
385 | puffs_cookie_t); \ |
386 | int fsname##_node_pathconf(struct puffs_usermount *, \ |
387 | puffs_cookie_t, int, register_t *); \ |
388 | int fsname##_node_advlock(struct puffs_usermount *, \ |
389 | puffs_cookie_t, void *, int, struct flock *, int); \ |
390 | int fsname##_node_read(struct puffs_usermount *, puffs_cookie_t,\ |
391 | uint8_t *, off_t, size_t *, const struct puffs_cred *, int);\ |
392 | int fsname##_node_write(struct puffs_usermount *, \ |
393 | puffs_cookie_t, uint8_t *, off_t, size_t *, \ |
394 | const struct puffs_cred *, int); \ |
395 | int fsname##_node_abortop(struct puffs_usermount *, \ |
396 | puffs_cookie_t, const struct puffs_cn *); \ |
397 | int fsname##_node_getextattr(struct puffs_usermount *, \ |
398 | puffs_cookie_t, int, const char *, size_t *, uint8_t *, \ |
399 | size_t *, const struct puffs_cred *); \ |
400 | int fsname##_node_setextattr(struct puffs_usermount *, \ |
401 | puffs_cookie_t, int, const char *, uint8_t *, size_t *, \ |
402 | const struct puffs_cred *); \ |
403 | int fsname##_node_listextattr(struct puffs_usermount *, \ |
404 | puffs_cookie_t, int, size_t *, uint8_t *, size_t *, \ |
405 | int, const struct puffs_cred *); \ |
406 | int fsname##_node_deleteextattr(struct puffs_usermount *, \ |
407 | puffs_cookie_t, int, const char *, \ |
408 | const struct puffs_cred *); \ |
409 | int fsname##_node_getattr_ttl(struct puffs_usermount *, \ |
410 | puffs_cookie_t, struct vattr *, const struct puffs_cred *, \ |
411 | struct timespec *); \ |
412 | int fsname##_node_setattr_ttl(struct puffs_usermount *, \ |
413 | puffs_cookie_t, struct vattr *, const struct puffs_cred *, \ |
414 | struct timespec *, int); \ |
415 | int fsname##_node_write2(struct puffs_usermount *, \ |
416 | puffs_cookie_t, uint8_t *, off_t, size_t *, \ |
417 | const struct puffs_cred *, int, int); \ |
418 | int fsname##_node_reclaim2(struct puffs_usermount *, \ |
419 | puffs_cookie_t, int); \ |
420 | int fsname##_node_open2(struct puffs_usermount *, \ |
421 | puffs_cookie_t, int, const struct puffs_cred *, int *); \ |
422 | int fsname##_node_fallocate(struct puffs_usermount *, \ |
423 | puffs_cookie_t, off_t, off_t); \ |
424 | int fsname##_node_fdiscard(struct puffs_usermount *, \ |
425 | puffs_cookie_t, off_t, off_t); |
426 | |
427 | |
428 | #define PUFFSOP_INIT(ops) \ |
429 | ops = malloc(sizeof(struct puffs_ops)); \ |
430 | memset(ops, 0, sizeof(struct puffs_ops)) |
431 | #define PUFFSOP_SET(ops, fsname, fsornode, opname) \ |
432 | (ops)->puffs_##fsornode##_##opname = fsname##_##fsornode##_##opname |
433 | #define PUFFSOP_SETFSNOP(ops, opname) \ |
434 | (ops)->puffs_fs_##opname = puffs_fsnop_##opname |
435 | |
436 | PUFFSOP_PROTOS(puffs_null) /* XXX */ |
437 | |
438 | #define PNPATH(pnode) ((pnode)->pn_po.po_path) |
439 | #define PNPLEN(pnode) ((pnode)->pn_po.po_len) |
440 | #define PCNPATH(pcnode) ((pcnode)->pcn_po_full.po_path) |
441 | #define PCNPLEN(pcnode) ((pcnode)->pcn_po_full.po_len) |
442 | #define PCNISDOTDOT(pcnode) \ |
443 | ((pcnode)->pcn_namelen == 2 && strcmp((pcnode)->pcn_name, "..") == 0) |
444 | |
445 | #define PUFFS_STORE_DCOOKIE(cp, ncp, off) \ |
446 | if (cp) { \ |
447 | *((cp)++) = off; \ |
448 | (*(ncp))++; \ |
449 | } |
450 | |
451 | /* mainloop */ |
452 | typedef void (*puffs_ml_loop_fn)(struct puffs_usermount *); |
453 | |
454 | /* framebuf stuff */ |
455 | struct puffs_framebuf; |
456 | typedef int (*puffs_framev_readframe_fn)(struct puffs_usermount *, |
457 | struct puffs_framebuf *, |
458 | int, int *); |
459 | typedef int (*puffs_framev_writeframe_fn)(struct puffs_usermount *, |
460 | struct puffs_framebuf *, |
461 | int, int *); |
462 | typedef int (*puffs_framev_cmpframe_fn)(struct puffs_usermount *, |
463 | struct puffs_framebuf *, |
464 | struct puffs_framebuf *, |
465 | int *); |
466 | typedef void (*puffs_framev_fdnotify_fn)(struct puffs_usermount *, int, int); |
467 | typedef void (*puffs_framev_gotframe_fn)(struct puffs_usermount *, |
468 | struct puffs_framebuf *); |
469 | typedef void (*puffs_framev_cb)(struct puffs_usermount *, |
470 | struct puffs_framebuf *, |
471 | void *, int); |
472 | #define PUFFS_FBIO_READ 0x01 |
473 | #define PUFFS_FBIO_WRITE 0x02 |
474 | #define PUFFS_FBIO_ERROR 0x04 |
475 | |
476 | #define PUFFS_FBQUEUE_URGENT 0x01 |
477 | |
478 | |
479 | __BEGIN_DECLS |
480 | |
481 | #define PUFFS_DEFER ((void *)-1) |
482 | struct puffs_usermount *puffs_init(struct puffs_ops *, const char *, |
483 | const char *, void *, uint32_t); |
484 | int puffs_mount(struct puffs_usermount *, const char *, int, void*); |
485 | int puffs_exit(struct puffs_usermount *, int); |
486 | void puffs_cancel(struct puffs_usermount *, int); |
487 | int puffs_mainloop(struct puffs_usermount *); |
488 | int puffs_daemon(struct puffs_usermount *, int, int); |
489 | |
490 | int puffs_unmountonsignal(int, bool); |
491 | |
492 | |
493 | int puffs_getselectable(struct puffs_usermount *); |
494 | int puffs_setblockingmode(struct puffs_usermount *, int); |
495 | int puffs_getstate(struct puffs_usermount *); |
496 | void puffs_setstacksize(struct puffs_usermount *, size_t); |
497 | |
498 | void puffs_ml_setloopfn(struct puffs_usermount *, puffs_ml_loop_fn); |
499 | void puffs_ml_settimeout(struct puffs_usermount *, struct timespec *); |
500 | |
501 | void puffs_setroot(struct puffs_usermount *, |
502 | struct puffs_node *); |
503 | struct puffs_node *puffs_getroot(struct puffs_usermount *); |
504 | void puffs_setrootinfo(struct puffs_usermount *, |
505 | enum vtype, vsize_t, dev_t); |
506 | |
507 | void *puffs_getspecific(struct puffs_usermount *); |
508 | void puffs_setspecific(struct puffs_usermount *, void *); |
509 | void puffs_setmaxreqlen(struct puffs_usermount *, size_t); |
510 | size_t puffs_getmaxreqlen(struct puffs_usermount *); |
511 | void puffs_setfhsize(struct puffs_usermount *, size_t, int); |
512 | void puffs_setmntinfo(struct puffs_usermount *, |
513 | const char *, const char *); |
514 | |
515 | void puffs_setncookiehash(struct puffs_usermount *, int); |
516 | |
517 | struct puffs_pathobj *puffs_getrootpathobj(struct puffs_usermount *); |
518 | |
519 | void puffs_setback(struct puffs_cc *, int); |
520 | |
521 | struct puffs_node *puffs_pn_new(struct puffs_usermount *, void *); |
522 | void puffs_pn_remove(struct puffs_node *); |
523 | void puffs_pn_put(struct puffs_node *); |
524 | struct vattr *puffs_pn_getvap(struct puffs_node *); |
525 | void * puffs_pn_getpriv(struct puffs_node *); |
526 | void puffs_pn_setpriv(struct puffs_node *, void *); |
527 | struct puffs_pathobj *puffs_pn_getpo(struct puffs_node *); |
528 | struct puffs_usermount *puffs_pn_getmnt(struct puffs_node *); |
529 | struct timespec *puffs_pn_getvattl(struct puffs_node *); |
530 | struct timespec *puffs_pn_getcnttl(struct puffs_node *); |
531 | |
532 | void puffs_newinfo_setcookie(struct puffs_newinfo *, puffs_cookie_t); |
533 | void puffs_newinfo_setvtype(struct puffs_newinfo *, enum vtype); |
534 | void puffs_newinfo_setsize(struct puffs_newinfo *, voff_t); |
535 | void puffs_newinfo_setrdev(struct puffs_newinfo *, dev_t); |
536 | void puffs_newinfo_setva(struct puffs_newinfo *, struct vattr *); |
537 | void puffs_newinfo_setvattl(struct puffs_newinfo *, struct timespec *); |
538 | void puffs_newinfo_setcnttl(struct puffs_newinfo *, struct timespec *); |
539 | |
540 | void *puffs_pn_getmntspecific(struct puffs_node *); |
541 | |
542 | typedef void * (*puffs_nodewalk_fn)(struct puffs_usermount *, |
543 | struct puffs_node *, void *); |
544 | void *puffs_pn_nodewalk(struct puffs_usermount *, |
545 | puffs_nodewalk_fn, void *); |
546 | |
547 | void puffs_setvattr(struct vattr *, const struct vattr *); |
548 | void puffs_vattr_null(struct vattr *); |
549 | |
550 | void puffs_null_setops(struct puffs_ops *); |
551 | |
552 | int puffs_dispatch_create(struct puffs_usermount *, |
553 | struct puffs_framebuf *, |
554 | struct puffs_cc **); |
555 | int puffs_dispatch_exec(struct puffs_cc *, |
556 | struct puffs_framebuf **); |
557 | |
558 | /* |
559 | * generic/dummy routines applicable for some file systems |
560 | */ |
561 | int puffs_fsnop_unmount(struct puffs_usermount *, int); |
562 | int puffs_fsnop_statvfs(struct puffs_usermount *, struct statvfs *); |
563 | void puffs_zerostatvfs(struct statvfs *); |
564 | int puffs_fsnop_sync(struct puffs_usermount *, int waitfor, |
565 | const struct puffs_cred *); |
566 | |
567 | int puffs_genfs_node_getattr(struct puffs_usermount *, puffs_cookie_t, |
568 | struct vattr *, const struct puffs_cred *); |
569 | int puffs_genfs_node_reclaim(struct puffs_usermount *, puffs_cookie_t); |
570 | |
571 | /* |
572 | * Subroutine stuff |
573 | */ |
574 | |
575 | int puffs_gendotdent(struct dirent **, ino_t, int, size_t *); |
576 | int puffs_nextdent(struct dirent **, const char *, ino_t, |
577 | uint8_t, size_t *); |
578 | int puffs_vtype2dt(enum vtype); |
579 | enum vtype puffs_mode2vt(mode_t); |
580 | void puffs_stat2vattr(struct vattr *va, const struct stat *); |
581 | mode_t puffs_addvtype2mode(mode_t, enum vtype); |
582 | |
583 | |
584 | /* |
585 | * credentials & permissions |
586 | */ |
587 | |
588 | /* Credential fetch */ |
589 | int puffs_cred_getuid(const struct puffs_cred *, uid_t *); |
590 | int puffs_cred_getgid(const struct puffs_cred *, gid_t *); |
591 | int puffs_cred_getgroups(const struct puffs_cred *, gid_t *, short *); |
592 | |
593 | /* Credential check */ |
594 | bool puffs_cred_isuid(const struct puffs_cred *, uid_t); |
595 | bool puffs_cred_hasgroup(const struct puffs_cred *, gid_t); |
596 | bool puffs_cred_isregular(const struct puffs_cred *); |
597 | bool puffs_cred_iskernel(const struct puffs_cred *); |
598 | bool puffs_cred_isfs(const struct puffs_cred *); |
599 | bool puffs_cred_isjuggernaut(const struct puffs_cred *); |
600 | |
601 | /* misc */ |
602 | int puffs_access(enum vtype, mode_t, uid_t, gid_t, mode_t, |
603 | const struct puffs_cred *); |
604 | int puffs_access_chown(uid_t, gid_t, uid_t, gid_t, |
605 | const struct puffs_cred *); |
606 | int puffs_access_chmod(uid_t, gid_t, enum vtype, mode_t, |
607 | const struct puffs_cred *); |
608 | int puffs_access_times(uid_t, gid_t, mode_t, int, |
609 | const struct puffs_cred *); |
610 | |
611 | |
612 | /* |
613 | * Call Context interfaces relevant for user. |
614 | */ |
615 | |
616 | void puffs_cc_yield(struct puffs_cc *); |
617 | void puffs_cc_continue(struct puffs_cc *); |
618 | void puffs_cc_schedule(struct puffs_cc *); |
619 | int puffs_cc_getcaller(struct puffs_cc *,pid_t *,lwpid_t *); |
620 | struct puffs_cc *puffs_cc_getcc(struct puffs_usermount *); |
621 | |
622 | /* |
623 | * Flushing / invalidation routines |
624 | */ |
625 | |
626 | int puffs_inval_namecache_dir(struct puffs_usermount *, puffs_cookie_t); |
627 | int puffs_inval_namecache_all(struct puffs_usermount *); |
628 | |
629 | int puffs_inval_pagecache_node(struct puffs_usermount *, puffs_cookie_t); |
630 | int puffs_inval_pagecache_node_range(struct puffs_usermount *, |
631 | puffs_cookie_t, off_t, off_t); |
632 | int puffs_flush_pagecache_node(struct puffs_usermount *, puffs_cookie_t); |
633 | int puffs_flush_pagecache_node_range(struct puffs_usermount *, |
634 | puffs_cookie_t, off_t, off_t); |
635 | |
636 | /* |
637 | * Path constructicons |
638 | */ |
639 | |
640 | int puffs_stdpath_buildpath(struct puffs_usermount *, |
641 | const struct puffs_pathobj *, |
642 | const struct puffs_pathobj *, size_t, |
643 | struct puffs_pathobj *); |
644 | int puffs_stdpath_cmppath(struct puffs_usermount *, struct puffs_pathobj *, |
645 | struct puffs_pathobj *, size_t, int); |
646 | void puffs_stdpath_freepath(struct puffs_usermount *,struct puffs_pathobj *); |
647 | |
648 | void *puffs_path_walkcmp(struct puffs_usermount *, |
649 | struct puffs_node *, void *); |
650 | void *puffs_path_prefixadj(struct puffs_usermount *, |
651 | struct puffs_node *, void *); |
652 | int puffs_path_pcnbuild(struct puffs_usermount *, |
653 | struct puffs_cn *, void *); |
654 | void puffs_path_buildhash(struct puffs_usermount *, struct puffs_pathobj *); |
655 | void puffs_set_pathbuild(struct puffs_usermount *, pu_pathbuild_fn); void puffs_set_pathtransform(struct puffs_usermount *, pu_pathtransform_fn); |
656 | void puffs_set_pathcmp(struct puffs_usermount *, pu_pathcmp_fn); |
657 | void puffs_set_pathfree(struct puffs_usermount *, pu_pathfree_fn); |
658 | void puffs_set_namemod(struct puffs_usermount *, pu_namemod_fn); |
659 | |
660 | void puffs_set_errnotify(struct puffs_usermount *, pu_errnotify_fn); |
661 | void puffs_kernerr_log(struct puffs_usermount *, uint8_t, int, |
662 | const char *, puffs_cookie_t); |
663 | __dead void puffs_kernerr_abort(struct puffs_usermount *, uint8_t, int, |
664 | const char *, puffs_cookie_t); |
665 | void puffs_set_prepost(struct puffs_usermount *, |
666 | pu_prepost_fn, pu_prepost_fn); |
667 | void puffs_set_cmap(struct puffs_usermount *, pu_cmap_fn); |
668 | |
669 | /* |
670 | * Suspension |
671 | */ |
672 | |
673 | int puffs_fs_suspend(struct puffs_usermount *); |
674 | |
675 | /* |
676 | * Frame buffering |
677 | */ |
678 | |
679 | void puffs_framev_init(struct puffs_usermount *, |
680 | puffs_framev_readframe_fn, |
681 | puffs_framev_writeframe_fn, |
682 | puffs_framev_cmpframe_fn, |
683 | puffs_framev_gotframe_fn, |
684 | puffs_framev_fdnotify_fn); |
685 | |
686 | struct puffs_framebuf *puffs_framebuf_make(void); |
687 | void puffs_framebuf_destroy(struct puffs_framebuf *); |
688 | int puffs_framebuf_dup(struct puffs_framebuf *, |
689 | struct puffs_framebuf **); |
690 | void puffs_framebuf_recycle(struct puffs_framebuf *); |
691 | int puffs_framebuf_reserve_space(struct puffs_framebuf *, |
692 | size_t); |
693 | |
694 | int puffs_framebuf_putdata(struct puffs_framebuf *, const void *, size_t); |
695 | int puffs_framebuf_putdata_atoff(struct puffs_framebuf *, size_t, |
696 | const void *, size_t); |
697 | int puffs_framebuf_getdata(struct puffs_framebuf *, void *, size_t); |
698 | int puffs_framebuf_getdata_atoff(struct puffs_framebuf *, size_t, |
699 | void *, size_t); |
700 | |
701 | size_t puffs_framebuf_telloff(struct puffs_framebuf *); |
702 | size_t puffs_framebuf_tellsize(struct puffs_framebuf *); |
703 | size_t puffs_framebuf_remaining(struct puffs_framebuf *); |
704 | int puffs_framebuf_seekset(struct puffs_framebuf *, size_t); |
705 | int puffs_framebuf_getwindow(struct puffs_framebuf *, size_t, |
706 | void **, size_t *); |
707 | |
708 | int puffs_framev_enqueue_cc(struct puffs_cc *, int, |
709 | struct puffs_framebuf *, int); |
710 | int puffs_framev_enqueue_cb(struct puffs_usermount *, int, |
711 | struct puffs_framebuf *, |
712 | puffs_framev_cb, void *, int); |
713 | int puffs_framev_enqueue_justsend(struct puffs_usermount *, int, |
714 | struct puffs_framebuf *, int, int); |
715 | int puffs_framev_enqueue_directreceive(struct puffs_cc *, int, |
716 | struct puffs_framebuf *, int); |
717 | int puffs_framev_enqueue_directsend(struct puffs_cc *, int, |
718 | struct puffs_framebuf *, int); |
719 | int puffs_framev_enqueue_waitevent(struct puffs_cc *, int, int *); |
720 | int puffs_framev_framebuf_ccpromote(struct puffs_framebuf *, |
721 | struct puffs_cc *); |
722 | |
723 | int puffs_framev_addfd(struct puffs_usermount *, int, int); |
724 | int puffs_framev_enablefd(struct puffs_usermount *, int, int); |
725 | int puffs_framev_disablefd(struct puffs_usermount *, int, int); |
726 | int puffs_framev_removefd(struct puffs_usermount *, int, int); |
727 | void puffs_framev_removeonclose(struct puffs_usermount *, int, int); |
728 | void puffs_framev_unmountonclose(struct puffs_usermount *, int, int); |
729 | |
730 | __END_DECLS |
731 | |
732 | #endif /* _PUFFS_H_ */ |
733 | |