Annotation of src/sys/ufs/ffs/ffs_vnops.c, Revision 1.111
1.111 ! ad 1: /* $NetBSD: ffs_vnops.c,v 1.110 2009/02/22 20:10:25 ad Exp $ */
1.100 simonb 2:
3: /*-
1.109 ad 4: * Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
1.100 simonb 5: * All rights reserved.
6: *
7: * This code is derived from software contributed to The NetBSD Foundation
1.109 ad 8: * by Wasabi Systems, Inc, and by Andrew Doran.
1.100 simonb 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29: * POSSIBILITY OF SUCH DAMAGE.
30: */
1.3 cgd 31:
1.1 mycroft 32: /*
33: * Copyright (c) 1982, 1986, 1989, 1993
34: * The Regents of the University of California. All rights reserved.
35: *
36: * Redistribution and use in source and binary forms, with or without
37: * modification, are permitted provided that the following conditions
38: * are met:
39: * 1. Redistributions of source code must retain the above copyright
40: * notice, this list of conditions and the following disclaimer.
41: * 2. Redistributions in binary form must reproduce the above copyright
42: * notice, this list of conditions and the following disclaimer in the
43: * documentation and/or other materials provided with the distribution.
1.60 agc 44: * 3. Neither the name of the University nor the names of its contributors
1.1 mycroft 45: * may be used to endorse or promote products derived from this software
46: * without specific prior written permission.
47: *
48: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58: * SUCH DAMAGE.
59: *
1.12 fvdl 60: * @(#)ffs_vnops.c 8.15 (Berkeley) 5/14/95
1.1 mycroft 61: */
1.44 lukem 62:
63: #include <sys/cdefs.h>
1.111 ! ad 64: __KERNEL_RCSID(0, "$NetBSD: ffs_vnops.c,v 1.110 2009/02/22 20:10:25 ad Exp $");
1.100 simonb 65:
66: #if defined(_KERNEL_OPT)
67: #include "opt_ffs.h"
68: #include "opt_wapbl.h"
69: #endif
1.11 mrg 70:
1.1 mycroft 71: #include <sys/param.h>
72: #include <sys/systm.h>
73: #include <sys/resourcevar.h>
74: #include <sys/kernel.h>
75: #include <sys/file.h>
76: #include <sys/stat.h>
77: #include <sys/buf.h>
1.50 jdolecek 78: #include <sys/event.h>
1.1 mycroft 79: #include <sys/proc.h>
80: #include <sys/mount.h>
81: #include <sys/vnode.h>
1.16 thorpej 82: #include <sys/pool.h>
1.6 christos 83: #include <sys/signalvar.h>
1.80 elad 84: #include <sys/kauth.h>
1.100 simonb 85: #include <sys/wapbl.h>
1.84 hannken 86: #include <sys/fstrans.h>
1.1 mycroft 87:
1.8 mycroft 88: #include <miscfs/fifofs/fifo.h>
89: #include <miscfs/genfs/genfs.h>
1.1 mycroft 90: #include <miscfs/specfs/specdev.h>
91:
92: #include <ufs/ufs/inode.h>
93: #include <ufs/ufs/dir.h>
94: #include <ufs/ufs/ufs_extern.h>
1.2 mycroft 95: #include <ufs/ufs/ufsmount.h>
1.100 simonb 96: #include <ufs/ufs/ufs_wapbl.h>
1.1 mycroft 97:
98: #include <ufs/ffs/fs.h>
99: #include <ufs/ffs/ffs_extern.h>
100:
1.49 chs 101: #include <uvm/uvm.h>
102:
1.1 mycroft 103: /* Global vfs data structures for ufs. */
1.74 xtraeme 104: int (**ffs_vnodeop_p)(void *);
1.37 jdolecek 105: const struct vnodeopv_entry_desc ffs_vnodeop_entries[] = {
1.1 mycroft 106: { &vop_default_desc, vn_default_error },
107: { &vop_lookup_desc, ufs_lookup }, /* lookup */
108: { &vop_create_desc, ufs_create }, /* create */
1.5 mycroft 109: { &vop_whiteout_desc, ufs_whiteout }, /* whiteout */
1.1 mycroft 110: { &vop_mknod_desc, ufs_mknod }, /* mknod */
111: { &vop_open_desc, ufs_open }, /* open */
112: { &vop_close_desc, ufs_close }, /* close */
113: { &vop_access_desc, ufs_access }, /* access */
114: { &vop_getattr_desc, ufs_getattr }, /* getattr */
115: { &vop_setattr_desc, ufs_setattr }, /* setattr */
116: { &vop_read_desc, ffs_read }, /* read */
117: { &vop_write_desc, ffs_write }, /* write */
118: { &vop_ioctl_desc, ufs_ioctl }, /* ioctl */
1.19 wrstuden 119: { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */
1.9 mycroft 120: { &vop_poll_desc, ufs_poll }, /* poll */
1.50 jdolecek 121: { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */
1.12 fvdl 122: { &vop_revoke_desc, ufs_revoke }, /* revoke */
1.1 mycroft 123: { &vop_mmap_desc, ufs_mmap }, /* mmap */
124: { &vop_fsync_desc, ffs_fsync }, /* fsync */
125: { &vop_seek_desc, ufs_seek }, /* seek */
126: { &vop_remove_desc, ufs_remove }, /* remove */
127: { &vop_link_desc, ufs_link }, /* link */
128: { &vop_rename_desc, ufs_rename }, /* rename */
129: { &vop_mkdir_desc, ufs_mkdir }, /* mkdir */
130: { &vop_rmdir_desc, ufs_rmdir }, /* rmdir */
131: { &vop_symlink_desc, ufs_symlink }, /* symlink */
132: { &vop_readdir_desc, ufs_readdir }, /* readdir */
133: { &vop_readlink_desc, ufs_readlink }, /* readlink */
134: { &vop_abortop_desc, ufs_abortop }, /* abortop */
135: { &vop_inactive_desc, ufs_inactive }, /* inactive */
136: { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */
1.90 hannken 137: { &vop_lock_desc, ffs_lock }, /* lock */
138: { &vop_unlock_desc, ffs_unlock }, /* unlock */
1.1 mycroft 139: { &vop_bmap_desc, ufs_bmap }, /* bmap */
140: { &vop_strategy_desc, ufs_strategy }, /* strategy */
141: { &vop_print_desc, ufs_print }, /* print */
1.90 hannken 142: { &vop_islocked_desc, ffs_islocked }, /* islocked */
1.1 mycroft 143: { &vop_pathconf_desc, ufs_pathconf }, /* pathconf */
144: { &vop_advlock_desc, ufs_advlock }, /* advlock */
1.8 mycroft 145: { &vop_bwrite_desc, vn_bwrite }, /* bwrite */
1.88 yamt 146: { &vop_getpages_desc, genfs_getpages }, /* getpages */
1.75 yamt 147: { &vop_putpages_desc, genfs_putpages }, /* putpages */
1.73 thorpej 148: { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */
149: { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */
150: { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */
151: { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */
152: { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */
153: { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */
1.35 chs 154: { NULL, NULL }
1.1 mycroft 155: };
1.37 jdolecek 156: const struct vnodeopv_desc ffs_vnodeop_opv_desc =
1.1 mycroft 157: { &ffs_vnodeop_p, ffs_vnodeop_entries };
158:
1.74 xtraeme 159: int (**ffs_specop_p)(void *);
1.37 jdolecek 160: const struct vnodeopv_entry_desc ffs_specop_entries[] = {
1.1 mycroft 161: { &vop_default_desc, vn_default_error },
162: { &vop_lookup_desc, spec_lookup }, /* lookup */
163: { &vop_create_desc, spec_create }, /* create */
164: { &vop_mknod_desc, spec_mknod }, /* mknod */
165: { &vop_open_desc, spec_open }, /* open */
166: { &vop_close_desc, ufsspec_close }, /* close */
167: { &vop_access_desc, ufs_access }, /* access */
168: { &vop_getattr_desc, ufs_getattr }, /* getattr */
169: { &vop_setattr_desc, ufs_setattr }, /* setattr */
170: { &vop_read_desc, ufsspec_read }, /* read */
171: { &vop_write_desc, ufsspec_write }, /* write */
172: { &vop_ioctl_desc, spec_ioctl }, /* ioctl */
1.19 wrstuden 173: { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */
1.9 mycroft 174: { &vop_poll_desc, spec_poll }, /* poll */
1.50 jdolecek 175: { &vop_kqfilter_desc, spec_kqfilter }, /* kqfilter */
1.12 fvdl 176: { &vop_revoke_desc, spec_revoke }, /* revoke */
1.1 mycroft 177: { &vop_mmap_desc, spec_mmap }, /* mmap */
178: { &vop_fsync_desc, ffs_fsync }, /* fsync */
179: { &vop_seek_desc, spec_seek }, /* seek */
180: { &vop_remove_desc, spec_remove }, /* remove */
181: { &vop_link_desc, spec_link }, /* link */
182: { &vop_rename_desc, spec_rename }, /* rename */
183: { &vop_mkdir_desc, spec_mkdir }, /* mkdir */
184: { &vop_rmdir_desc, spec_rmdir }, /* rmdir */
185: { &vop_symlink_desc, spec_symlink }, /* symlink */
186: { &vop_readdir_desc, spec_readdir }, /* readdir */
187: { &vop_readlink_desc, spec_readlink }, /* readlink */
188: { &vop_abortop_desc, spec_abortop }, /* abortop */
189: { &vop_inactive_desc, ufs_inactive }, /* inactive */
190: { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */
1.90 hannken 191: { &vop_lock_desc, ffs_lock }, /* lock */
192: { &vop_unlock_desc, ffs_unlock }, /* unlock */
1.1 mycroft 193: { &vop_bmap_desc, spec_bmap }, /* bmap */
194: { &vop_strategy_desc, spec_strategy }, /* strategy */
195: { &vop_print_desc, ufs_print }, /* print */
1.90 hannken 196: { &vop_islocked_desc, ffs_islocked }, /* islocked */
1.1 mycroft 197: { &vop_pathconf_desc, spec_pathconf }, /* pathconf */
198: { &vop_advlock_desc, spec_advlock }, /* advlock */
1.8 mycroft 199: { &vop_bwrite_desc, vn_bwrite }, /* bwrite */
1.38 chs 200: { &vop_getpages_desc, spec_getpages }, /* getpages */
201: { &vop_putpages_desc, spec_putpages }, /* putpages */
1.73 thorpej 202: { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */
203: { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */
204: { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */
205: { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */
206: { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */
207: { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */
1.35 chs 208: { NULL, NULL }
1.1 mycroft 209: };
1.37 jdolecek 210: const struct vnodeopv_desc ffs_specop_opv_desc =
1.1 mycroft 211: { &ffs_specop_p, ffs_specop_entries };
212:
1.74 xtraeme 213: int (**ffs_fifoop_p)(void *);
1.37 jdolecek 214: const struct vnodeopv_entry_desc ffs_fifoop_entries[] = {
1.1 mycroft 215: { &vop_default_desc, vn_default_error },
216: { &vop_lookup_desc, fifo_lookup }, /* lookup */
217: { &vop_create_desc, fifo_create }, /* create */
218: { &vop_mknod_desc, fifo_mknod }, /* mknod */
219: { &vop_open_desc, fifo_open }, /* open */
220: { &vop_close_desc, ufsfifo_close }, /* close */
221: { &vop_access_desc, ufs_access }, /* access */
222: { &vop_getattr_desc, ufs_getattr }, /* getattr */
223: { &vop_setattr_desc, ufs_setattr }, /* setattr */
224: { &vop_read_desc, ufsfifo_read }, /* read */
225: { &vop_write_desc, ufsfifo_write }, /* write */
226: { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */
1.19 wrstuden 227: { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */
1.9 mycroft 228: { &vop_poll_desc, fifo_poll }, /* poll */
1.50 jdolecek 229: { &vop_kqfilter_desc, fifo_kqfilter }, /* kqfilter */
1.12 fvdl 230: { &vop_revoke_desc, fifo_revoke }, /* revoke */
1.1 mycroft 231: { &vop_mmap_desc, fifo_mmap }, /* mmap */
232: { &vop_fsync_desc, ffs_fsync }, /* fsync */
233: { &vop_seek_desc, fifo_seek }, /* seek */
234: { &vop_remove_desc, fifo_remove }, /* remove */
235: { &vop_link_desc, fifo_link }, /* link */
236: { &vop_rename_desc, fifo_rename }, /* rename */
237: { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */
238: { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */
239: { &vop_symlink_desc, fifo_symlink }, /* symlink */
240: { &vop_readdir_desc, fifo_readdir }, /* readdir */
241: { &vop_readlink_desc, fifo_readlink }, /* readlink */
242: { &vop_abortop_desc, fifo_abortop }, /* abortop */
243: { &vop_inactive_desc, ufs_inactive }, /* inactive */
244: { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */
1.90 hannken 245: { &vop_lock_desc, ffs_lock }, /* lock */
246: { &vop_unlock_desc, ffs_unlock }, /* unlock */
1.1 mycroft 247: { &vop_bmap_desc, fifo_bmap }, /* bmap */
248: { &vop_strategy_desc, fifo_strategy }, /* strategy */
249: { &vop_print_desc, ufs_print }, /* print */
1.90 hannken 250: { &vop_islocked_desc, ffs_islocked }, /* islocked */
1.1 mycroft 251: { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */
252: { &vop_advlock_desc, fifo_advlock }, /* advlock */
1.8 mycroft 253: { &vop_bwrite_desc, vn_bwrite }, /* bwrite */
1.40 sommerfe 254: { &vop_putpages_desc, fifo_putpages }, /* putpages */
1.73 thorpej 255: { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */
256: { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */
257: { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */
258: { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */
259: { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */
260: { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */
1.35 chs 261: { NULL, NULL }
1.1 mycroft 262: };
1.37 jdolecek 263: const struct vnodeopv_desc ffs_fifoop_opv_desc =
1.1 mycroft 264: { &ffs_fifoop_p, ffs_fifoop_entries };
265:
266: #include <ufs/ufs/ufs_readwrite.c>
1.20 fvdl 267:
1.33 fvdl 268: int
1.70 thorpej 269: ffs_fsync(void *v)
1.33 fvdl 270: {
271: struct vop_fsync_args /* {
272: struct vnode *a_vp;
1.80 elad 273: kauth_cred_t a_cred;
1.33 fvdl 274: int a_flags;
1.46 chs 275: off_t a_offlo;
276: off_t a_offhi;
1.77 christos 277: struct lwp *a_l;
1.33 fvdl 278: } */ *ap = v;
1.35 chs 279: struct buf *bp;
1.94 ad 280: int num, error, i;
1.33 fvdl 281: struct indir ia[NIADDR + 1];
282: int bsize;
1.45 simonb 283: daddr_t blk_high;
1.33 fvdl 284: struct vnode *vp;
1.100 simonb 285: #ifdef WAPBL
286: struct mount *mp;
287: #endif
1.33 fvdl 288:
1.84 hannken 289: vp = ap->a_vp;
290:
1.87 hannken 291: fstrans_start(vp->v_mount, FSTRANS_LAZY);
1.111 ! ad 292: if ((ap->a_offlo == 0 && ap->a_offhi == 0) || (vp->v_type != VREG)) {
! 293: error = ffs_full_fsync(vp, ap->a_flags);
1.84 hannken 294: goto out;
295: }
1.33 fvdl 296:
1.84 hannken 297: bsize = vp->v_mount->mnt_stat.f_iosize;
1.33 fvdl 298: blk_high = ap->a_offhi / bsize;
299: if (ap->a_offhi % bsize != 0)
300: blk_high++;
301:
302: /*
1.35 chs 303: * First, flush all pages in range.
1.33 fvdl 304: */
1.35 chs 305:
1.94 ad 306: mutex_enter(&vp->v_interlock);
1.64 dbj 307: error = VOP_PUTPAGES(vp, trunc_page(ap->a_offlo),
308: round_page(ap->a_offhi), PGO_CLEANIT |
309: ((ap->a_flags & FSYNC_WAIT) ? PGO_SYNCIO : 0));
310: if (error) {
1.84 hannken 311: goto out;
1.39 chs 312: }
1.33 fvdl 313:
1.100 simonb 314: #ifdef WAPBL
315: mp = wapbl_vptomp(vp);
316: if (mp->mnt_wapbl) {
1.110 ad 317: /*
318: * Don't bother writing out metadata if the syncer is
319: * making the request. We will let the sync vnode
320: * write it out in a single burst through a call to
321: * VFS_SYNC().
322: */
323: if ((ap->a_flags & (FSYNC_DATAONLY | FSYNC_LAZY)) != 0) {
1.100 simonb 324: fstrans_done(vp->v_mount);
325: return 0;
326: }
327: error = 0;
328: if (vp->v_tag == VT_UFS && VTOI(vp)->i_flag &
329: (IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY |
330: IN_MODIFIED | IN_ACCESSED)) {
331: error = UFS_WAPBL_BEGIN(mp);
332: if (error) {
333: fstrans_done(vp->v_mount);
334: return error;
335: }
336: error = ffs_update(vp, NULL, NULL,
337: (ap->a_flags & FSYNC_WAIT) ? UPDATE_WAIT : 0);
338: UFS_WAPBL_END(mp);
339: }
1.110 ad 340: if (error || (ap->a_flags & FSYNC_NOLOG) != 0) {
1.100 simonb 341: fstrans_done(vp->v_mount);
342: return error;
343: }
344: error = wapbl_flush(mp->mnt_wapbl, 0);
345: fstrans_done(vp->v_mount);
346: return error;
347: }
348: #endif /* WAPBL */
349:
1.33 fvdl 350: /*
1.35 chs 351: * Then, flush indirect blocks.
1.33 fvdl 352: */
1.35 chs 353:
1.61 kleink 354: if (blk_high >= NDADDR) {
1.33 fvdl 355: error = ufs_getlbns(vp, blk_high, ia, &num);
1.94 ad 356: if (error)
1.84 hannken 357: goto out;
1.94 ad 358:
359: mutex_enter(&bufcache_lock);
1.33 fvdl 360: for (i = 0; i < num; i++) {
1.94 ad 361: if ((bp = incore(vp, ia[i].in_lbn)) == NULL)
362: continue;
363: if ((bp->b_cflags & BC_BUSY) != 0 ||
364: (bp->b_oflags & BO_DELWRI) == 0)
365: continue;
366: bp->b_cflags |= BC_BUSY | BC_VFLUSH;
367: mutex_exit(&bufcache_lock);
368: bawrite(bp);
369: mutex_enter(&bufcache_lock);
1.33 fvdl 370: }
1.94 ad 371: mutex_exit(&bufcache_lock);
1.33 fvdl 372: }
373:
374: if (ap->a_flags & FSYNC_WAIT) {
1.94 ad 375: mutex_enter(&vp->v_interlock);
376: while (vp->v_numoutput > 0)
377: cv_wait(&vp->v_cv, &vp->v_interlock);
378: mutex_exit(&vp->v_interlock);
1.33 fvdl 379: }
380:
1.76 yamt 381: error = ffs_update(vp, NULL, NULL,
1.66 thorpej 382: ((ap->a_flags & (FSYNC_WAIT | FSYNC_DATAONLY)) == FSYNC_WAIT)
1.67 wrstuden 383: ? UPDATE_WAIT : 0);
384:
385: if (error == 0 && ap->a_flags & FSYNC_CACHE) {
386: int l = 0;
387: VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &l, FWRITE,
1.93 pooka 388: curlwp->l_cred);
1.67 wrstuden 389: }
390:
1.84 hannken 391: out:
392: fstrans_done(vp->v_mount);
1.67 wrstuden 393: return error;
1.33 fvdl 394: }
395:
1.20 fvdl 396: /*
1.110 ad 397: * Synch an open file. Called for VOP_FSYNC().
1.20 fvdl 398: */
399: /* ARGSUSED */
1.94 ad 400: int
401: ffs_full_fsync(struct vnode *vp, int flags)
1.20 fvdl 402: {
403: struct buf *bp, *nbp;
1.111 ! ad 404: int error, passes, skipmeta, waitfor, i;
1.99 ad 405: struct mount *mp;
406:
1.110 ad 407: KASSERT(VTOI(vp) != NULL);
408: KASSERT(vp->v_tag == VT_UFS);
409:
1.99 ad 410: error = 0;
1.24 fvdl 411:
1.110 ad 412: mp = vp->v_mount;
413: if (vp->v_type == VBLK && vp->v_specmountpoint != NULL) {
1.105 ad 414: mp = vp->v_specmountpoint;
415: } else {
416: mp = vp->v_mount;
417: }
418:
1.35 chs 419: /*
1.110 ad 420: * Flush all dirty data associated with the vnode.
1.20 fvdl 421: */
1.72 yamt 422: if (vp->v_type == VREG || vp->v_type == VBLK) {
1.101 oster 423: int pflags = PGO_ALLPAGES | PGO_CLEANIT;
424:
425: if ((flags & FSYNC_WAIT))
426: pflags |= PGO_SYNCIO;
427: if (vp->v_type == VREG &&
428: fstrans_getstate(mp) == FSTRANS_SUSPENDING)
429: pflags |= PGO_FREE;
1.111 ! ad 430: mutex_enter(&vp->v_interlock);
1.101 oster 431: error = VOP_PUTPAGES(vp, 0, 0, pflags);
1.99 ad 432: if (error)
1.39 chs 433: return error;
1.100 simonb 434: }
435:
436: #ifdef WAPBL
1.111 ! ad 437: mp = wapbl_vptomp(vp);
1.100 simonb 438: if (mp && mp->mnt_wapbl) {
1.110 ad 439: /*
440: * Don't bother writing out metadata if the syncer is
441: * making the request. We will let the sync vnode
442: * write it out in a single burst through a call to
443: * VFS_SYNC().
444: */
445: if ((flags & (FSYNC_DATAONLY | FSYNC_LAZY)) != 0)
446: return 0;
1.100 simonb 447:
1.110 ad 448: if ((VTOI(vp)->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE
1.109 ad 449: | IN_MODIFY | IN_MODIFIED | IN_ACCESSED)) != 0) {
1.100 simonb 450: error = UFS_WAPBL_BEGIN(mp);
451: if (error)
452: return error;
453: error = ffs_update(vp, NULL, NULL,
1.110 ad 454: (flags & FSYNC_WAIT) ? UPDATE_WAIT : 0);
1.100 simonb 455: UFS_WAPBL_END(mp);
456: }
1.110 ad 457: if (error || (flags & FSYNC_NOLOG) != 0)
1.100 simonb 458: return error;
1.106 ad 459:
1.100 simonb 460: /*
461: * Don't flush the log if the vnode being flushed
462: * contains no dirty buffers that could be in the log.
463: */
1.109 ad 464: if (!LIST_EMPTY(&vp->v_dirtyblkhd)) {
1.100 simonb 465: error = wapbl_flush(mp->mnt_wapbl, 0);
466: if (error)
467: return error;
468: }
469:
1.109 ad 470: if ((flags & FSYNC_WAIT) != 0) {
1.100 simonb 471: mutex_enter(&vp->v_interlock);
1.110 ad 472: while (vp->v_numoutput != 0)
1.100 simonb 473: cv_wait(&vp->v_cv, &vp->v_interlock);
474: mutex_exit(&vp->v_interlock);
475: }
476:
477: return error;
478: }
479: #endif /* WAPBL */
1.35 chs 480:
1.110 ad 481: /*
1.111 ! ad 482: * Write out metadata for non-logging file systems. XXX This block
! 483: * should be simplified now that softdep is gone.
1.110 ad 484: */
1.20 fvdl 485: passes = NIADDR + 1;
486: skipmeta = 0;
1.94 ad 487: if (flags & FSYNC_WAIT)
1.20 fvdl 488: skipmeta = 1;
1.35 chs 489:
1.20 fvdl 490: loop:
1.94 ad 491: mutex_enter(&bufcache_lock);
492: LIST_FOREACH(bp, &vp->v_dirtyblkhd, b_vnbufs) {
493: bp->b_cflags &= ~BC_SCANNED;
494: }
1.29 mycroft 495: for (bp = LIST_FIRST(&vp->v_dirtyblkhd); bp; bp = nbp) {
496: nbp = LIST_NEXT(bp, b_vnbufs);
1.94 ad 497: if (bp->b_cflags & (BC_BUSY | BC_SCANNED))
1.20 fvdl 498: continue;
1.94 ad 499: if ((bp->b_oflags & BO_DELWRI) == 0)
1.20 fvdl 500: panic("ffs_fsync: not dirty");
1.94 ad 501: if (skipmeta && bp->b_lblkno < 0)
1.20 fvdl 502: continue;
1.94 ad 503: bp->b_cflags |= BC_BUSY | BC_VFLUSH | BC_SCANNED;
504: mutex_exit(&bufcache_lock);
1.20 fvdl 505: /*
506: * On our final pass through, do all I/O synchronously
507: * so that we can find out if our flush is failing
508: * because of write errors.
509: */
1.94 ad 510: if (passes > 0 || !(flags & FSYNC_WAIT))
1.20 fvdl 511: (void) bawrite(bp);
512: else if ((error = bwrite(bp)) != 0)
513: return (error);
514: /*
1.94 ad 515: * Since we unlocked during the I/O, we need
1.20 fvdl 516: * to start from a known point.
517: */
1.94 ad 518: mutex_enter(&bufcache_lock);
1.29 mycroft 519: nbp = LIST_FIRST(&vp->v_dirtyblkhd);
1.20 fvdl 520: }
1.94 ad 521: mutex_exit(&bufcache_lock);
1.61 kleink 522: if (skipmeta) {
1.20 fvdl 523: skipmeta = 0;
524: goto loop;
525: }
1.94 ad 526:
1.109 ad 527: if ((flags & FSYNC_WAIT) != 0) {
1.94 ad 528: mutex_enter(&vp->v_interlock);
1.20 fvdl 529: while (vp->v_numoutput) {
1.94 ad 530: cv_wait(&vp->v_cv, &vp->v_interlock);
1.20 fvdl 531: }
1.94 ad 532: mutex_exit(&vp->v_interlock);
1.20 fvdl 533:
1.69 perry 534: /*
1.20 fvdl 535: * Ensure that any filesystem metadata associated
536: * with the vnode has been written.
537: */
1.29 mycroft 538: if (!LIST_EMPTY(&vp->v_dirtyblkhd)) {
539: /*
540: * Block devices associated with filesystems may
541: * have new I/O requests posted for them even if
542: * the vnode is locked, so no amount of trying will
543: * get them clean. Thus we give block devices a
544: * good effort, then just give up. For all other file
545: * types, go around and try again until it is clean.
546: */
547: if (passes > 0) {
548: passes--;
549: goto loop;
550: }
1.20 fvdl 551: #ifdef DIAGNOSTIC
1.29 mycroft 552: if (vp->v_type != VBLK)
553: vprint("ffs_fsync: dirty", vp);
1.20 fvdl 554: #endif
1.29 mycroft 555: }
556: }
1.47 fvdl 557:
1.111 ! ad 558: waitfor = (flags & FSYNC_WAIT) ? UPDATE_WAIT : 0;
1.110 ad 559: error = ffs_update(vp, NULL, NULL, waitfor);
1.67 wrstuden 560:
1.109 ad 561: if (error == 0 && (flags & FSYNC_CACHE) != 0) {
1.110 ad 562: (void)VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &i, FWRITE,
563: kauth_cred_get());
1.67 wrstuden 564: }
565:
566: return error;
1.20 fvdl 567: }
1.1 mycroft 568:
569: /*
570: * Reclaim an inode so that it can be used for other purposes.
571: */
572: int
1.70 thorpej 573: ffs_reclaim(void *v)
1.6 christos 574: {
1.1 mycroft 575: struct vop_reclaim_args /* {
576: struct vnode *a_vp;
1.77 christos 577: struct lwp *a_l;
1.6 christos 578: } */ *ap = v;
1.26 augustss 579: struct vnode *vp = ap->a_vp;
1.56 fvdl 580: struct inode *ip = VTOI(vp);
1.84 hannken 581: struct mount *mp = vp->v_mount;
1.56 fvdl 582: struct ufsmount *ump = ip->i_ump;
1.94 ad 583: void *data;
1.1 mycroft 584: int error;
585:
1.87 hannken 586: fstrans_start(mp, FSTRANS_LAZY);
1.93 pooka 587: if ((error = ufs_reclaim(vp)) != 0) {
1.84 hannken 588: fstrans_done(mp);
1.1 mycroft 589: return (error);
1.84 hannken 590: }
1.57 fvdl 591: if (ip->i_din.ffs1_din != NULL) {
592: if (ump->um_fstype == UFS1)
1.95 ad 593: pool_cache_put(ffs_dinode1_cache, ip->i_din.ffs1_din);
1.57 fvdl 594: else
1.95 ad 595: pool_cache_put(ffs_dinode2_cache, ip->i_din.ffs2_din);
1.57 fvdl 596: }
1.16 thorpej 597: /*
1.94 ad 598: * To interlock with ffs_sync().
599: */
600: genfs_node_destroy(vp);
601: mutex_enter(&vp->v_interlock);
602: data = vp->v_data;
603: vp->v_data = NULL;
604: mutex_exit(&vp->v_interlock);
605:
606: /*
1.16 thorpej 607: * XXX MFS ends up here, too, to free an inode. Should we create
608: * XXX a separate pool for MFS inodes?
609: */
1.95 ad 610: pool_cache_put(ffs_inode_cache, data);
1.84 hannken 611: fstrans_done(mp);
1.1 mycroft 612: return (0);
1.35 chs 613: }
614:
615: /*
616: * Return the last logical file offset that should be written for this file
617: * if we're doing a write that ends at "size".
618: */
1.39 chs 619:
620: void
1.83 christos 621: ffs_gop_size(struct vnode *vp, off_t size, off_t *eobp, int flags)
1.35 chs 622: {
1.39 chs 623: struct inode *ip = VTOI(vp);
1.35 chs 624: struct fs *fs = ip->i_fs;
1.52 fvdl 625: daddr_t olbn, nlbn;
1.55 perseant 626:
1.56 fvdl 627: olbn = lblkno(fs, ip->i_size);
1.39 chs 628: nlbn = lblkno(fs, size);
1.35 chs 629: if (nlbn < NDADDR && olbn <= nlbn) {
1.39 chs 630: *eobp = fragroundup(fs, size);
1.35 chs 631: } else {
1.39 chs 632: *eobp = blkroundup(fs, size);
1.35 chs 633: }
1.1 mycroft 634: }
1.73 thorpej 635:
636: int
637: ffs_openextattr(void *v)
638: {
639: struct vop_openextattr_args /* {
640: struct vnode *a_vp;
1.80 elad 641: kauth_cred_t a_cred;
1.73 thorpej 642: struct proc *a_p;
643: } */ *ap = v;
644: struct inode *ip = VTOI(ap->a_vp);
645: struct fs *fs = ip->i_fs;
646:
647: /* Not supported for UFS1 file systems. */
648: if (fs->fs_magic == FS_UFS1_MAGIC)
649: return (EOPNOTSUPP);
650:
651: /* XXX Not implemented for UFS2 file systems. */
652: return (EOPNOTSUPP);
653: }
654:
655: int
656: ffs_closeextattr(void *v)
657: {
658: struct vop_closeextattr_args /* {
659: struct vnode *a_vp;
660: int a_commit;
1.80 elad 661: kauth_cred_t a_cred;
1.73 thorpej 662: struct proc *a_p;
663: } */ *ap = v;
664: struct inode *ip = VTOI(ap->a_vp);
665: struct fs *fs = ip->i_fs;
666:
667: /* Not supported for UFS1 file systems. */
668: if (fs->fs_magic == FS_UFS1_MAGIC)
669: return (EOPNOTSUPP);
670:
671: /* XXX Not implemented for UFS2 file systems. */
672: return (EOPNOTSUPP);
673: }
674:
675: int
676: ffs_getextattr(void *v)
677: {
678: struct vop_getextattr_args /* {
679: struct vnode *a_vp;
680: int a_attrnamespace;
681: const char *a_name;
682: struct uio *a_uio;
683: size_t *a_size;
1.80 elad 684: kauth_cred_t a_cred;
1.73 thorpej 685: struct proc *a_p;
686: } */ *ap = v;
1.84 hannken 687: struct vnode *vp = ap->a_vp;
688: struct inode *ip = VTOI(vp);
1.73 thorpej 689: struct fs *fs = ip->i_fs;
690:
691: if (fs->fs_magic == FS_UFS1_MAGIC) {
692: #ifdef UFS_EXTATTR
1.84 hannken 693: int error;
694:
1.87 hannken 695: fstrans_start(vp->v_mount, FSTRANS_SHARED);
1.84 hannken 696: error = ufs_getextattr(ap);
697: fstrans_done(vp->v_mount);
698: return error;
1.73 thorpej 699: #else
700: return (EOPNOTSUPP);
701: #endif
702: }
703:
704: /* XXX Not implemented for UFS2 file systems. */
705: return (EOPNOTSUPP);
706: }
707:
708: int
709: ffs_setextattr(void *v)
710: {
711: struct vop_setextattr_args /* {
712: struct vnode *a_vp;
713: int a_attrnamespace;
714: const char *a_name;
715: struct uio *a_uio;
1.80 elad 716: kauth_cred_t a_cred;
1.73 thorpej 717: struct proc *a_p;
718: } */ *ap = v;
1.84 hannken 719: struct vnode *vp = ap->a_vp;
720: struct inode *ip = VTOI(vp);
1.73 thorpej 721: struct fs *fs = ip->i_fs;
722:
723: if (fs->fs_magic == FS_UFS1_MAGIC) {
724: #ifdef UFS_EXTATTR
1.84 hannken 725: int error;
726:
1.87 hannken 727: fstrans_start(vp->v_mount, FSTRANS_SHARED);
1.84 hannken 728: error = ufs_setextattr(ap);
729: fstrans_done(vp->v_mount);
730: return error;
1.73 thorpej 731: #else
732: return (EOPNOTSUPP);
733: #endif
734: }
735:
736: /* XXX Not implemented for UFS2 file systems. */
737: return (EOPNOTSUPP);
738: }
739:
740: int
741: ffs_listextattr(void *v)
742: {
743: struct vop_listextattr_args /* {
744: struct vnode *a_vp;
745: int a_attrnamespace;
746: struct uio *a_uio;
747: size_t *a_size;
1.80 elad 748: kauth_cred_t a_cred;
1.73 thorpej 749: struct proc *a_p;
750: } */ *ap = v;
751: struct inode *ip = VTOI(ap->a_vp);
752: struct fs *fs = ip->i_fs;
753:
754: /* Not supported for UFS1 file systems. */
755: if (fs->fs_magic == FS_UFS1_MAGIC)
756: return (EOPNOTSUPP);
757:
758: /* XXX Not implemented for UFS2 file systems. */
759: return (EOPNOTSUPP);
760: }
761:
762: int
763: ffs_deleteextattr(void *v)
764: {
765: struct vop_deleteextattr_args /* {
766: struct vnode *a_vp;
767: int a_attrnamespace;
1.80 elad 768: kauth_cred_t a_cred;
1.73 thorpej 769: struct proc *a_p;
770: } */ *ap = v;
1.84 hannken 771: struct vnode *vp = ap->a_vp;
772: struct inode *ip = VTOI(vp);
1.73 thorpej 773: struct fs *fs = ip->i_fs;
774:
775: if (fs->fs_magic == FS_UFS1_MAGIC) {
776: #ifdef UFS_EXTATTR
1.84 hannken 777: int error;
778:
1.87 hannken 779: fstrans_start(vp->v_mount, FSTRANS_SHARED);
1.84 hannken 780: error = ufs_deleteextattr(ap);
781: fstrans_done(vp->v_mount);
782: return error;
1.73 thorpej 783: #else
784: return (EOPNOTSUPP);
785: #endif
786: }
787:
788: /* XXX Not implemented for UFS2 file systems. */
789: return (EOPNOTSUPP);
790: }
1.90 hannken 791:
792: /*
793: * Lock the node.
794: */
795: int
796: ffs_lock(void *v)
797: {
798: struct vop_lock_args /* {
799: struct vnode *a_vp;
800: int a_flags;
801: } */ *ap = v;
802: struct vnode *vp = ap->a_vp;
803: struct mount *mp = vp->v_mount;
1.91 hannken 804: int flags = ap->a_flags;
1.90 hannken 805:
1.98 ad 806: if ((flags & LK_INTERLOCK) != 0) {
807: mutex_exit(&vp->v_interlock);
808: flags &= ~LK_INTERLOCK;
809: }
810:
1.90 hannken 811: /*
812: * Fake lock during file system suspension.
813: */
814: if ((vp->v_type == VREG || vp->v_type == VDIR) &&
815: fstrans_is_owner(mp) &&
816: fstrans_getstate(mp) == FSTRANS_SUSPENDING) {
817: return 0;
818: }
1.91 hannken 819:
1.102 hannken 820: return (vlockmgr(vp->v_vnlock, flags));
1.90 hannken 821: }
822:
823: /*
824: * Unlock the node.
825: */
826: int
827: ffs_unlock(void *v)
828: {
829: struct vop_unlock_args /* {
830: struct vnode *a_vp;
831: int a_flags;
832: } */ *ap = v;
833: struct vnode *vp = ap->a_vp;
834: struct mount *mp = vp->v_mount;
835:
1.98 ad 836: KASSERT(ap->a_flags == 0);
837:
1.90 hannken 838: /*
839: * Fake unlock during file system suspension.
840: */
841: if ((vp->v_type == VREG || vp->v_type == VDIR) &&
842: fstrans_is_owner(mp) &&
843: fstrans_getstate(mp) == FSTRANS_SUSPENDING) {
844: return 0;
845: }
1.98 ad 846: return (vlockmgr(vp->v_vnlock, LK_RELEASE));
1.90 hannken 847: }
848:
849: /*
850: * Return whether or not the node is locked.
851: */
852: int
853: ffs_islocked(void *v)
854: {
855: struct vop_islocked_args /* {
856: struct vnode *a_vp;
857: } */ *ap = v;
858: struct vnode *vp = ap->a_vp;
859:
1.98 ad 860: return (vlockstatus(vp->v_vnlock));
1.90 hannken 861: }
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