Annotation of src/sys/fs/puffs/puffs_vfsops.c, Revision 1.83
1.83 ! pooka 1: /* $NetBSD: puffs_vfsops.c,v 1.82 2009/03/18 10:22:42 cegger Exp $ */
1.1 pooka 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: *
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: #include <sys/cdefs.h>
1.83 ! pooka 33: __KERNEL_RCSID(0, "$NetBSD: puffs_vfsops.c,v 1.82 2009/03/18 10:22:42 cegger Exp $");
1.1 pooka 34:
35: #include <sys/param.h>
36: #include <sys/mount.h>
37: #include <sys/malloc.h>
38: #include <sys/extattr.h>
39: #include <sys/queue.h>
40: #include <sys/vnode.h>
41: #include <sys/dirent.h>
42: #include <sys/kauth.h>
1.47 ad 43: #include <sys/proc.h>
1.80 rumble 44: #include <sys/module.h>
1.1 pooka 45:
1.68 pooka 46: #include <dev/putter/putter_sys.h>
1.1 pooka 47:
1.78 dholland 48: #include <miscfs/genfs/genfs.h>
49:
1.1 pooka 50: #include <fs/puffs/puffs_msgif.h>
51: #include <fs/puffs/puffs_sys.h>
52:
1.66 pooka 53: #include <lib/libkern/libkern.h>
54:
1.38 pooka 55: #include <nfs/nfsproto.h> /* for fh sizes */
56:
1.81 jmcneill 57: MODULE(MODULE_CLASS_VFS, puffs, "putter");
1.80 rumble 58:
1.73 pooka 59: VFS_PROTOS(puffs_vfsop);
1.1 pooka 60:
1.22 pooka 61: #ifndef PUFFS_PNODEBUCKETS
62: #define PUFFS_PNODEBUCKETS 256
63: #endif
64: #ifndef PUFFS_MAXPNODEBUCKETS
1.35 pooka 65: #define PUFFS_MAXPNODEBUCKETS 8192
1.22 pooka 66: #endif
1.35 pooka 67: int puffs_pnodebuckets_default = PUFFS_PNODEBUCKETS;
68: int puffs_maxpnodebuckets = PUFFS_MAXPNODEBUCKETS;
1.22 pooka 69:
1.70 pooka 70: #define BUCKETALLOC(a) (sizeof(struct puffs_pnode_hashlist *) * (a))
71:
1.66 pooka 72: static struct putter_ops puffs_putter = {
73: .pop_getout = puffs_msgif_getout,
74: .pop_releaseout = puffs_msgif_releaseout,
75: .pop_waitcount = puffs_msgif_waitcount,
76: .pop_dispatch = puffs_msgif_dispatch,
77: .pop_close = puffs_msgif_close,
78: };
79:
1.1 pooka 80: int
1.73 pooka 81: puffs_vfsop_mount(struct mount *mp, const char *path, void *data,
82: size_t *data_len)
1.1 pooka 83: {
1.22 pooka 84: struct puffs_mount *pmp = NULL;
1.34 pooka 85: struct puffs_kargs *args;
1.51 pooka 86: char fstype[_VFS_NAMELEN];
87: char *p;
1.22 pooka 88: int error = 0, i;
1.71 pooka 89: pid_t mntpid = curlwp->l_proc->p_pid;
1.1 pooka 90:
1.48 dsl 91: if (*data_len < sizeof *args)
92: return EINVAL;
93:
1.1 pooka 94: if (mp->mnt_flag & MNT_GETARGS) {
95: pmp = MPTOPUFFSMP(mp);
1.48 dsl 96: *(struct puffs_kargs *)data = pmp->pmp_args;
97: *data_len = sizeof *args;
98: return 0;
1.1 pooka 99: }
100:
101: /* update is not supported currently */
102: if (mp->mnt_flag & MNT_UPDATE)
103: return EOPNOTSUPP;
104:
105: /*
106: * We need the file system name
107: */
108: if (!data)
109: return EINVAL;
110:
1.70 pooka 111: args = (struct puffs_kargs *)data;
1.17 pooka 112:
113: /* devel phase */
114: if (args->pa_vers != (PUFFSVERSION | PUFFSDEVELVERS)) {
1.64 pooka 115: printf("puffs_mount: development version mismatch: "
116: "kernel %d, lib %d\n",
117: PUFFSVERSION, args->pa_vers & ~PUFFSDEVELVERS);
1.17 pooka 118: error = EINVAL;
119: goto out;
120: }
1.1 pooka 121:
1.54 pooka 122: if ((args->pa_flags & ~PUFFS_KFLAG_MASK) != 0) {
123: printf("puffs_mount: invalid KFLAGs 0x%x\n", args->pa_flags);
124: error = EINVAL;
125: goto out;
126: }
127: if ((args->pa_fhflags & ~PUFFS_FHFLAG_MASK) != 0) {
128: printf("puffs_mount: invalid FHFLAGs 0x%x\n", args->pa_fhflags);
129: error = EINVAL;
130: goto out;
131: }
132:
133: /* use dummy value for passthrough */
134: if (args->pa_fhflags & PUFFS_FHFLAG_PASSTHROUGH)
135: args->pa_fhsize = sizeof(struct fid);
1.8 pooka 136:
1.38 pooka 137: /* sanitize file handle length */
138: if (PUFFS_TOFHSIZE(args->pa_fhsize) > FHANDLE_SIZE_MAX) {
139: printf("puffs_mount: handle size %zu too large\n",
140: args->pa_fhsize);
141: error = EINVAL;
142: goto out;
143: }
144: /* sanity check file handle max sizes */
145: if (args->pa_fhsize && args->pa_fhflags & PUFFS_FHFLAG_PROTOMASK) {
146: size_t kfhsize = PUFFS_TOFHSIZE(args->pa_fhsize);
147:
148: if (args->pa_fhflags & PUFFS_FHFLAG_NFSV2) {
149: if (NFSX_FHTOOBIG_P(kfhsize, 0)) {
150: printf("puffs_mount: fhsize larger than "
151: "NFSv2 max %d\n",
152: PUFFS_FROMFHSIZE(NFSX_V2FH));
153: error = EINVAL;
154: goto out;
155: }
156: }
157:
158: if (args->pa_fhflags & PUFFS_FHFLAG_NFSV3) {
159: if (NFSX_FHTOOBIG_P(kfhsize, 1)) {
160: printf("puffs_mount: fhsize larger than "
161: "NFSv3 max %d\n",
162: PUFFS_FROMFHSIZE(NFSX_V3FHMAX));
163: error = EINVAL;
164: goto out;
165: }
166: }
167: }
168:
1.51 pooka 169: /* don't allow non-printing characters (like my sweet umlauts.. snif) */
170: args->pa_typename[sizeof(args->pa_typename)-1] = '\0';
171: for (p = args->pa_typename; *p; p++)
172: if (*p < ' ' || *p > '~')
173: *p = '.';
174:
175: args->pa_mntfromname[sizeof(args->pa_mntfromname)-1] = '\0';
176: for (p = args->pa_mntfromname; *p; p++)
177: if (*p < ' ' || *p > '~')
178: *p = '.';
179:
1.1 pooka 180: /* build real name */
1.51 pooka 181: (void)strlcpy(fstype, PUFFS_TYPEPREFIX, sizeof(fstype));
182: (void)strlcat(fstype, args->pa_typename, sizeof(fstype));
1.1 pooka 183:
184: /* inform user server if it got the max request size it wanted */
1.63 pooka 185: if (args->pa_maxmsglen == 0 || args->pa_maxmsglen > PUFFS_MSG_MAXSIZE)
186: args->pa_maxmsglen = PUFFS_MSG_MAXSIZE;
187: else if (args->pa_maxmsglen < 2*PUFFS_MSGSTRUCT_MAX)
188: args->pa_maxmsglen = 2*PUFFS_MSGSTRUCT_MAX;
189:
1.51 pooka 190: (void)strlcpy(args->pa_typename, fstype, sizeof(args->pa_typename));
1.1 pooka 191:
1.40 pooka 192: if (args->pa_nhashbuckets == 0)
193: args->pa_nhashbuckets = puffs_pnodebuckets_default;
194: if (args->pa_nhashbuckets < 1)
195: args->pa_nhashbuckets = 1;
196: if (args->pa_nhashbuckets > PUFFS_MAXPNODEBUCKETS) {
197: args->pa_nhashbuckets = puffs_maxpnodebuckets;
198: printf("puffs_mount: using %d hash buckets. "
199: "adjust puffs_maxpnodebuckets for more\n",
200: puffs_maxpnodebuckets);
201: }
202:
1.51 pooka 203: error = set_statvfs_info(path, UIO_USERSPACE, args->pa_mntfromname,
1.71 pooka 204: UIO_SYSSPACE, fstype, mp, curlwp);
1.1 pooka 205: if (error)
1.17 pooka 206: goto out;
1.10 pooka 207: mp->mnt_stat.f_iosize = DEV_BSIZE;
1.1 pooka 208:
1.42 pooka 209: /*
210: * We can't handle the VFS_STATVFS() mount_domount() does
211: * after VFS_MOUNT() because we'd deadlock, so handle it
212: * here already.
213: */
214: copy_statvfs_info(&args->pa_svfsb, mp);
215: (void)memcpy(&mp->mnt_stat, &args->pa_svfsb, sizeof(mp->mnt_stat));
216:
1.70 pooka 217: pmp = kmem_zalloc(sizeof(struct puffs_mount), KM_SLEEP);
1.1 pooka 218:
1.6 pooka 219: mp->mnt_fs_bshift = DEV_BSHIFT;
220: mp->mnt_dev_bshift = DEV_BSHIFT;
221: mp->mnt_flag &= ~MNT_LOCAL; /* we don't really know, so ... */
1.1 pooka 222: mp->mnt_data = pmp;
1.6 pooka 223:
1.1 pooka 224: pmp->pmp_status = PUFFSTAT_MOUNTING;
225: pmp->pmp_mp = mp;
1.63 pooka 226: pmp->pmp_msg_maxsize = args->pa_maxmsglen;
1.17 pooka 227: pmp->pmp_args = *args;
1.1 pooka 228:
1.40 pooka 229: pmp->pmp_npnodehash = args->pa_nhashbuckets;
1.70 pooka 230: pmp->pmp_pnodehash = kmem_alloc(BUCKETALLOC(pmp->pmp_npnodehash), KM_SLEEP);
1.22 pooka 231: for (i = 0; i < pmp->pmp_npnodehash; i++)
232: LIST_INIT(&pmp->pmp_pnodehash[i]);
1.57 pooka 233: LIST_INIT(&pmp->pmp_newcookie);
1.22 pooka 234:
1.1 pooka 235: /*
236: * Inform the fileops processing code that we have a mountpoint.
237: * If it doesn't know about anyone with our pid/fd having the
238: * device open, punt
239: */
1.66 pooka 240: if ((pmp->pmp_pi
241: = putter_attach(mntpid, args->pa_fd, pmp, &puffs_putter)) == NULL) {
1.17 pooka 242: error = ENOENT;
243: goto out;
1.1 pooka 244: }
245:
1.42 pooka 246: /* XXX: check parameters */
247: pmp->pmp_root_cookie = args->pa_root_cookie;
248: pmp->pmp_root_vtype = args->pa_root_vtype;
249: pmp->pmp_root_vsize = args->pa_root_vsize;
250: pmp->pmp_root_rdev = args->pa_root_rdev;
251:
1.31 pooka 252: mutex_init(&pmp->pmp_lock, MUTEX_DEFAULT, IPL_NONE);
1.63 pooka 253: cv_init(&pmp->pmp_msg_waiter_cv, "puffsget");
1.41 pooka 254: cv_init(&pmp->pmp_refcount_cv, "puffsref");
1.31 pooka 255: cv_init(&pmp->pmp_unmounting_cv, "puffsum");
1.63 pooka 256: TAILQ_INIT(&pmp->pmp_msg_touser);
257: TAILQ_INIT(&pmp->pmp_msg_replywait);
1.1 pooka 258:
259: DPRINTF(("puffs_mount: mount point at %p, puffs specific at %p\n",
260: mp, MPTOPUFFSMP(mp)));
261:
262: vfs_getnewfsid(mp);
263:
1.17 pooka 264: out:
1.22 pooka 265: if (error && pmp && pmp->pmp_pnodehash)
1.70 pooka 266: kmem_free(pmp->pmp_pnodehash, BUCKETALLOC(pmp->pmp_npnodehash));
1.22 pooka 267: if (error && pmp)
1.70 pooka 268: kmem_free(pmp, sizeof(struct puffs_mount));
1.17 pooka 269: return error;
1.1 pooka 270: }
271:
272: int
1.73 pooka 273: puffs_vfsop_start(struct mount *mp, int flags)
1.1 pooka 274: {
1.42 pooka 275: struct puffs_mount *pmp = MPTOPUFFSMP(mp);
1.1 pooka 276:
1.42 pooka 277: KASSERT(pmp->pmp_status == PUFFSTAT_MOUNTING);
1.1 pooka 278: pmp->pmp_status = PUFFSTAT_RUNNING;
279:
280: return 0;
281: }
282:
283: int
1.73 pooka 284: puffs_vfsop_unmount(struct mount *mp, int mntflags)
1.1 pooka 285: {
1.63 pooka 286: PUFFS_MSG_VARS(vfs, unmount);
1.1 pooka 287: struct puffs_mount *pmp;
288: int error, force;
289:
290: error = 0;
291: force = mntflags & MNT_FORCE;
292: pmp = MPTOPUFFSMP(mp);
293:
294: DPRINTF(("puffs_unmount: detach filesystem from vfs, current "
295: "status 0x%x\n", pmp->pmp_status));
296:
297: /*
298: * flush all the vnodes. VOP_RECLAIM() takes care that the
299: * root vnode does not get flushed until unmount. The
300: * userspace root node cookie is stored in the mount
301: * structure, so we can always re-instantiate a root vnode,
302: * should userspace unmount decide it doesn't want to
303: * cooperate.
304: */
305: error = vflush(mp, NULLVP, force ? FORCECLOSE : 0);
306: if (error)
307: goto out;
308:
309: /*
310: * If we are not DYING, we should ask userspace's opinion
311: * about the situation
312: */
1.31 pooka 313: mutex_enter(&pmp->pmp_lock);
1.1 pooka 314: if (pmp->pmp_status != PUFFSTAT_DYING) {
1.16 pooka 315: pmp->pmp_unmounting = 1;
1.31 pooka 316: mutex_exit(&pmp->pmp_lock);
1.16 pooka 317:
1.63 pooka 318: PUFFS_MSG_ALLOC(vfs, unmount);
1.69 pooka 319: puffs_msg_setinfo(park_unmount,
320: PUFFSOP_VFS, PUFFS_VFS_UNMOUNT, NULL);
1.63 pooka 321: unmount_msg->pvfsr_flags = mntflags;
322:
1.69 pooka 323: PUFFS_MSG_ENQUEUEWAIT(pmp, park_unmount, error);
1.63 pooka 324: PUFFS_MSG_RELEASE(unmount);
1.16 pooka 325:
1.60 pooka 326: error = checkerr(pmp, error, __func__);
1.16 pooka 327: DPRINTF(("puffs_unmount: error %d force %d\n", error, force));
328:
1.31 pooka 329: mutex_enter(&pmp->pmp_lock);
1.16 pooka 330: pmp->pmp_unmounting = 0;
1.31 pooka 331: cv_broadcast(&pmp->pmp_unmounting_cv);
1.1 pooka 332: }
333:
334: /*
335: * if userspace cooperated or we really need to die,
336: * screw what userland thinks and just die.
337: */
338: if (error == 0 || force) {
1.26 pooka 339: /* tell waiters & other resources to go unwait themselves */
340: puffs_userdead(pmp);
1.66 pooka 341: putter_detach(pmp->pmp_pi);
1.26 pooka 342:
343: /*
1.41 pooka 344: * Wait until there are no more users for the mount resource.
345: * Notice that this is hooked against transport_close
346: * and return from touser. In an ideal world, it would
347: * be hooked against final return from all operations.
348: * But currently it works well enough, since nobody
349: * does weird blocking voodoo after return from touser().
1.26 pooka 350: */
1.41 pooka 351: while (pmp->pmp_refcount != 0)
352: cv_wait(&pmp->pmp_refcount_cv, &pmp->pmp_lock);
1.31 pooka 353: mutex_exit(&pmp->pmp_lock);
1.26 pooka 354:
355: /* free resources now that we hopefully have no waiters left */
1.41 pooka 356: cv_destroy(&pmp->pmp_unmounting_cv);
357: cv_destroy(&pmp->pmp_refcount_cv);
1.63 pooka 358: cv_destroy(&pmp->pmp_msg_waiter_cv);
1.31 pooka 359: mutex_destroy(&pmp->pmp_lock);
360:
1.70 pooka 361: kmem_free(pmp->pmp_pnodehash, BUCKETALLOC(pmp->pmp_npnodehash));
362: kmem_free(pmp, sizeof(struct puffs_mount));
1.1 pooka 363: error = 0;
1.16 pooka 364: } else {
1.31 pooka 365: mutex_exit(&pmp->pmp_lock);
1.1 pooka 366: }
367:
368: out:
1.2 pooka 369: DPRINTF(("puffs_unmount: return %d\n", error));
1.1 pooka 370: return error;
371: }
372:
373: /*
374: * This doesn't need to travel to userspace
375: */
376: int
1.73 pooka 377: puffs_vfsop_root(struct mount *mp, struct vnode **vpp)
1.1 pooka 378: {
1.45 pooka 379: struct puffs_mount *pmp = MPTOPUFFSMP(mp);
1.59 pooka 380: int rv;
1.1 pooka 381:
1.59 pooka 382: rv = puffs_cookie2vnode(pmp, pmp->pmp_root_cookie, 1, 1, vpp);
383: KASSERT(rv != PUFFS_NOSUCHCOOKIE);
384: return rv;
1.1 pooka 385: }
386:
387: int
1.73 pooka 388: puffs_vfsop_statvfs(struct mount *mp, struct statvfs *sbp)
1.1 pooka 389: {
1.63 pooka 390: PUFFS_MSG_VARS(vfs, statvfs);
1.1 pooka 391: struct puffs_mount *pmp;
392: int error = 0;
393:
394: pmp = MPTOPUFFSMP(mp);
395:
396: /*
397: * If we are mounting, it means that the userspace counterpart
398: * is calling mount(2), but mount(2) also calls statvfs. So
399: * requesting statvfs from userspace would mean a deadlock.
400: * Compensate.
401: */
402: if (pmp->pmp_status == PUFFSTAT_MOUNTING)
403: return EINPROGRESS;
404:
1.63 pooka 405: PUFFS_MSG_ALLOC(vfs, statvfs);
1.69 pooka 406: puffs_msg_setinfo(park_statvfs, PUFFSOP_VFS, PUFFS_VFS_STATVFS, NULL);
1.1 pooka 407:
1.69 pooka 408: PUFFS_MSG_ENQUEUEWAIT(pmp, park_statvfs, error);
1.60 pooka 409: error = checkerr(pmp, error, __func__);
1.63 pooka 410: statvfs_msg->pvfsr_sb.f_iosize = DEV_BSIZE;
1.10 pooka 411:
1.1 pooka 412: /*
413: * Try to produce a sensible result even in the event
414: * of userspace error.
415: *
416: * XXX: cache the copy in non-error case
417: */
418: if (!error) {
1.63 pooka 419: copy_statvfs_info(&statvfs_msg->pvfsr_sb, mp);
420: (void)memcpy(sbp, &statvfs_msg->pvfsr_sb,
1.1 pooka 421: sizeof(struct statvfs));
422: } else {
423: copy_statvfs_info(sbp, mp);
424: }
425:
1.63 pooka 426: PUFFS_MSG_RELEASE(statvfs);
1.14 pooka 427: return error;
1.1 pooka 428: }
429:
1.26 pooka 430: static int
1.83 ! pooka 431: pageflush(struct mount *mp, kauth_cred_t cred, int waitfor)
1.1 pooka 432: {
1.26 pooka 433: struct puffs_node *pn;
1.74 ad 434: struct vnode *vp, *mvp;
1.30 pooka 435: int error, rv;
1.1 pooka 436:
1.18 pooka 437: error = 0;
438:
1.74 ad 439: /* Allocate a marker vnode. */
1.76 pooka 440: if ((mvp = vnalloc(mp)) == NULL)
1.74 ad 441: return ENOMEM;
442:
1.18 pooka 443: /*
1.24 pooka 444: * Sync all cached data from regular vnodes (which are not
445: * currently locked, see below). After this we call VFS_SYNC
446: * for the fs server, which should handle data and metadata for
447: * all the nodes it knows to exist.
1.18 pooka 448: */
1.74 ad 449: mutex_enter(&mntvnode_lock);
1.18 pooka 450: loop:
1.74 ad 451: for (vp = TAILQ_FIRST(&mp->mnt_vnodelist); vp; vp = vunmark(mvp)) {
452: vmark(mvp, vp);
453: if (vp->v_mount != mp || vismarker(vp))
454: continue;
1.18 pooka 455:
1.74 ad 456: mutex_enter(&vp->v_interlock);
1.26 pooka 457: pn = VPTOPP(vp);
1.19 pooka 458: if (vp->v_type != VREG || UVM_OBJ_IS_CLEAN(&vp->v_uobj)) {
1.74 ad 459: mutex_exit(&vp->v_interlock);
1.18 pooka 460: continue;
461: }
462:
1.74 ad 463: mutex_exit(&mntvnode_lock);
1.21 pooka 464:
465: /*
466: * Here we try to get a reference to the vnode and to
467: * lock it. This is mostly cargo-culted, but I will
468: * offer an explanation to why I believe this might
469: * actually do the right thing.
470: *
471: * If the vnode is a goner, we quite obviously don't need
472: * to sync it.
473: *
474: * If the vnode was busy, we don't need to sync it because
475: * this is never called with MNT_WAIT except from
476: * dounmount(), when we are wait-flushing all the dirty
477: * vnodes through other routes in any case. So there,
478: * sync() doesn't actually sync. Happy now?
479: */
1.18 pooka 480: rv = vget(vp, LK_EXCLUSIVE | LK_NOWAIT | LK_INTERLOCK);
481: if (rv) {
1.74 ad 482: mutex_enter(&mntvnode_lock);
483: if (rv == ENOENT) {
484: (void)vunmark(mvp);
1.18 pooka 485: goto loop;
1.74 ad 486: }
1.18 pooka 487: continue;
488: }
489:
1.83 ! pooka 490: /* hmm.. is the FAF thing entirely sensible? */
! 491: if (waitfor == MNT_LAZY) {
1.74 ad 492: mutex_enter(&vp->v_interlock);
1.83 ! pooka 493: pn->pn_stat |= PNODE_FAF;
1.74 ad 494: mutex_exit(&vp->v_interlock);
1.30 pooka 495: }
1.71 pooka 496: rv = VOP_FSYNC(vp, cred, waitfor, 0, 0);
1.83 ! pooka 497: if (waitfor == MNT_LAZY) {
1.74 ad 498: mutex_enter(&vp->v_interlock);
1.83 ! pooka 499: pn->pn_stat &= ~PNODE_FAF;
1.74 ad 500: mutex_exit(&vp->v_interlock);
1.26 pooka 501: }
1.21 pooka 502: if (rv)
1.18 pooka 503: error = rv;
504: vput(vp);
1.74 ad 505: mutex_enter(&mntvnode_lock);
1.18 pooka 506: }
1.74 ad 507: mutex_exit(&mntvnode_lock);
1.76 pooka 508: vnfree(mvp);
1.18 pooka 509:
1.26 pooka 510: return error;
511: }
512:
513: int
1.73 pooka 514: puffs_vfsop_sync(struct mount *mp, int waitfor, struct kauth_cred *cred)
1.26 pooka 515: {
1.63 pooka 516: PUFFS_MSG_VARS(vfs, sync);
1.62 pooka 517: struct puffs_mount *pmp = MPTOPUFFSMP(mp);
1.26 pooka 518: int error, rv;
519:
1.83 ! pooka 520: error = pageflush(mp, cred, waitfor);
1.26 pooka 521:
1.18 pooka 522: /* sync fs */
1.63 pooka 523: PUFFS_MSG_ALLOC(vfs, sync);
524: sync_msg->pvfsr_waitfor = waitfor;
525: puffs_credcvt(&sync_msg->pvfsr_cred, cred);
1.69 pooka 526: puffs_msg_setinfo(park_sync, PUFFSOP_VFS, PUFFS_VFS_SYNC, NULL);
1.1 pooka 527:
1.69 pooka 528: PUFFS_MSG_ENQUEUEWAIT(pmp, park_sync, rv);
1.62 pooka 529: rv = checkerr(pmp, rv, __func__);
1.18 pooka 530: if (rv)
531: error = rv;
1.1 pooka 532:
1.63 pooka 533: PUFFS_MSG_RELEASE(sync);
1.1 pooka 534: return error;
535: }
536:
537: int
1.73 pooka 538: puffs_vfsop_fhtovp(struct mount *mp, struct fid *fhp, struct vnode **vpp)
1.1 pooka 539: {
1.63 pooka 540: PUFFS_MSG_VARS(vfs, fhtonode);
1.33 pooka 541: struct puffs_mount *pmp = MPTOPUFFSMP(mp);
542: struct vnode *vp;
1.54 pooka 543: void *fhdata;
544: size_t argsize, fhlen;
1.33 pooka 545: int error;
546:
1.38 pooka 547: if (pmp->pmp_args.pa_fhsize == 0)
1.33 pooka 548: return EOPNOTSUPP;
549:
1.54 pooka 550: if (pmp->pmp_args.pa_fhflags & PUFFS_FHFLAG_PASSTHROUGH) {
551: fhlen = fhp->fid_len;
552: fhdata = fhp;
1.39 pooka 553: } else {
1.54 pooka 554: fhlen = PUFFS_FROMFHSIZE(fhp->fid_len);
555: fhdata = fhp->fid_data;
556:
557: if (pmp->pmp_args.pa_fhflags & PUFFS_FHFLAG_DYNAMIC) {
558: if (pmp->pmp_args.pa_fhsize < fhlen)
559: return EINVAL;
560: } else {
561: if (pmp->pmp_args.pa_fhsize != fhlen)
562: return EINVAL;
563: }
1.39 pooka 564: }
1.33 pooka 565:
1.63 pooka 566: argsize = sizeof(struct puffs_vfsmsg_fhtonode) + fhlen;
1.75 pooka 567: puffs_msgmem_alloc(argsize, &park_fhtonode, (void *)&fhtonode_msg, 1);
1.63 pooka 568: fhtonode_msg->pvfsr_dsize = fhlen;
569: memcpy(fhtonode_msg->pvfsr_data, fhdata, fhlen);
1.69 pooka 570: puffs_msg_setinfo(park_fhtonode, PUFFSOP_VFS, PUFFS_VFS_FHTOVP, NULL);
1.33 pooka 571:
1.69 pooka 572: PUFFS_MSG_ENQUEUEWAIT(pmp, park_fhtonode, error);
1.60 pooka 573: error = checkerr(pmp, error, __func__);
1.33 pooka 574: if (error)
1.38 pooka 575: goto out;
1.33 pooka 576:
1.63 pooka 577: error = puffs_cookie2vnode(pmp, fhtonode_msg->pvfsr_fhcookie, 1,1,&vp);
1.33 pooka 578: DPRINTF(("puffs_fhtovp: got cookie %p, existing vnode %p\n",
1.63 pooka 579: fhtonode_msg->pvfsr_fhcookie, vp));
1.59 pooka 580: if (error == PUFFS_NOSUCHCOOKIE) {
1.63 pooka 581: error = puffs_getvnode(mp, fhtonode_msg->pvfsr_fhcookie,
582: fhtonode_msg->pvfsr_vtype, fhtonode_msg->pvfsr_size,
583: fhtonode_msg->pvfsr_rdev, &vp);
1.33 pooka 584: if (error)
1.38 pooka 585: goto out;
1.33 pooka 586: vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
1.59 pooka 587: } else if (error) {
588: goto out;
1.33 pooka 589: }
1.1 pooka 590:
1.33 pooka 591: *vpp = vp;
1.38 pooka 592: out:
1.63 pooka 593: puffs_msgmem_release(park_fhtonode);
1.38 pooka 594: return error;
1.1 pooka 595: }
596:
597: int
1.73 pooka 598: puffs_vfsop_vptofh(struct vnode *vp, struct fid *fhp, size_t *fh_size)
1.1 pooka 599: {
1.63 pooka 600: PUFFS_MSG_VARS(vfs, nodetofh);
1.33 pooka 601: struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount);
1.54 pooka 602: size_t argsize, fhlen;
1.33 pooka 603: int error;
604:
1.38 pooka 605: if (pmp->pmp_args.pa_fhsize == 0)
1.33 pooka 606: return EOPNOTSUPP;
607:
1.54 pooka 608: /* if file handles are static len, we can test len immediately */
1.38 pooka 609: if (((pmp->pmp_args.pa_fhflags & PUFFS_FHFLAG_DYNAMIC) == 0)
1.54 pooka 610: && ((pmp->pmp_args.pa_fhflags & PUFFS_FHFLAG_PASSTHROUGH) == 0)
1.38 pooka 611: && (PUFFS_FROMFHSIZE(*fh_size) < pmp->pmp_args.pa_fhsize)) {
612: *fh_size = PUFFS_TOFHSIZE(pmp->pmp_args.pa_fhsize);
1.33 pooka 613: return E2BIG;
614: }
1.1 pooka 615:
1.54 pooka 616: if (pmp->pmp_args.pa_fhflags & PUFFS_FHFLAG_PASSTHROUGH)
617: fhlen = *fh_size;
618: else
619: fhlen = PUFFS_FROMFHSIZE(*fh_size);
620:
1.63 pooka 621: argsize = sizeof(struct puffs_vfsmsg_nodetofh) + fhlen;
1.75 pooka 622: puffs_msgmem_alloc(argsize, &park_nodetofh, (void *)&nodetofh_msg, 1);
1.63 pooka 623: nodetofh_msg->pvfsr_fhcookie = VPTOPNC(vp);
624: nodetofh_msg->pvfsr_dsize = fhlen;
1.69 pooka 625: puffs_msg_setinfo(park_nodetofh, PUFFSOP_VFS, PUFFS_VFS_VPTOFH, NULL);
1.38 pooka 626:
1.69 pooka 627: PUFFS_MSG_ENQUEUEWAIT(pmp, park_nodetofh, error);
1.60 pooka 628: error = checkerr(pmp, error, __func__);
1.54 pooka 629:
630: if (pmp->pmp_args.pa_fhflags & PUFFS_FHFLAG_PASSTHROUGH)
1.63 pooka 631: fhlen = nodetofh_msg->pvfsr_dsize;
1.54 pooka 632: else if (pmp->pmp_args.pa_fhflags & PUFFS_FHFLAG_DYNAMIC)
1.63 pooka 633: fhlen = PUFFS_TOFHSIZE(nodetofh_msg->pvfsr_dsize);
1.54 pooka 634: else
635: fhlen = PUFFS_TOFHSIZE(pmp->pmp_args.pa_fhsize);
636:
1.38 pooka 637: if (error) {
638: if (error == E2BIG)
1.54 pooka 639: *fh_size = fhlen;
1.38 pooka 640: goto out;
641: }
642:
1.54 pooka 643: if (fhlen > FHANDLE_SIZE_MAX) {
1.69 pooka 644: puffs_senderr(pmp, PUFFS_ERR_VPTOFH, E2BIG,
1.60 pooka 645: "file handle too big", VPTOPNC(vp));
1.58 pooka 646: error = EPROTO;
1.38 pooka 647: goto out;
648: }
1.33 pooka 649:
1.54 pooka 650: if (*fh_size < fhlen) {
651: *fh_size = fhlen;
1.38 pooka 652: error = E2BIG;
653: goto out;
654: }
1.54 pooka 655: *fh_size = fhlen;
1.1 pooka 656:
1.38 pooka 657: if (fhp) {
1.54 pooka 658: if (pmp->pmp_args.pa_fhflags & PUFFS_FHFLAG_PASSTHROUGH) {
1.63 pooka 659: memcpy(fhp, nodetofh_msg->pvfsr_data, fhlen);
1.54 pooka 660: } else {
661: fhp->fid_len = *fh_size;
1.63 pooka 662: memcpy(fhp->fid_data, nodetofh_msg->pvfsr_data,
663: nodetofh_msg->pvfsr_dsize);
1.54 pooka 664: }
1.38 pooka 665: }
1.1 pooka 666:
1.38 pooka 667: out:
1.63 pooka 668: puffs_msgmem_release(park_nodetofh);
1.38 pooka 669: return error;
1.1 pooka 670: }
671:
672: void
1.82 cegger 673: puffs_vfsop_init(void)
1.1 pooka 674: {
675:
1.56 pooka 676: /* some checks depend on this */
677: KASSERT(VNOVAL == VSIZENOTSET);
678:
1.31 pooka 679: pool_init(&puffs_pnpool, sizeof(struct puffs_node), 0, 0, 0,
680: "puffpnpl", &pool_allocator_nointr, IPL_NONE);
681: puffs_msgif_init();
1.1 pooka 682: }
683:
684: void
1.82 cegger 685: puffs_vfsop_done(void)
1.1 pooka 686: {
687:
1.31 pooka 688: puffs_msgif_destroy();
689: pool_destroy(&puffs_pnpool);
1.1 pooka 690: }
691:
692: int
1.73 pooka 693: puffs_vfsop_snapshot(struct mount *mp, struct vnode *vp, struct timespec *ts)
1.1 pooka 694: {
695:
696: return EOPNOTSUPP;
697: }
698:
699: const struct vnodeopv_desc * const puffs_vnodeopv_descs[] = {
700: &puffs_vnodeop_opv_desc,
1.3 pooka 701: &puffs_specop_opv_desc,
1.4 pooka 702: &puffs_fifoop_opv_desc,
1.12 pooka 703: &puffs_msgop_opv_desc,
1.1 pooka 704: NULL,
705: };
706:
707: struct vfsops puffs_vfsops = {
708: MOUNT_PUFFS,
1.48 dsl 709: sizeof (struct puffs_kargs),
1.73 pooka 710: puffs_vfsop_mount, /* mount */
711: puffs_vfsop_start, /* start */
712: puffs_vfsop_unmount, /* unmount */
713: puffs_vfsop_root, /* root */
714: (void *)eopnotsupp, /* quotactl */
715: puffs_vfsop_statvfs, /* statvfs */
716: puffs_vfsop_sync, /* sync */
717: (void *)eopnotsupp, /* vget */
718: puffs_vfsop_fhtovp, /* fhtovp */
719: puffs_vfsop_vptofh, /* vptofh */
720: puffs_vfsop_init, /* init */
721: NULL, /* reinit */
722: puffs_vfsop_done, /* done */
723: NULL, /* mountroot */
724: puffs_vfsop_snapshot, /* snapshot */
725: vfs_stdextattrctl, /* extattrctl */
1.83 ! pooka 726: (void *)eopnotsupp, /* suspendctl */
1.78 dholland 727: genfs_renamelock_enter,
728: genfs_renamelock_exit,
1.79 ad 729: (void *)eopnotsupp,
1.73 pooka 730: puffs_vnodeopv_descs, /* vnodeops */
731: 0, /* refcount */
1.1 pooka 732: { NULL, NULL }
733: };
1.80 rumble 734:
735: static int
736: puffs_modcmd(modcmd_t cmd, void *arg)
737: {
738:
739: switch (cmd) {
740: case MODULE_CMD_INIT:
741: return vfs_attach(&puffs_vfsops);
742: case MODULE_CMD_FINI:
743: return vfs_detach(&puffs_vfsops);
744: default:
745: return ENOTTY;
746: }
747: }
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