Annotation of src/sys/ufs/ffs/ffs_vnops.c, Revision 1.92.4.1
1.92.4.1! mjf 1: /* $NetBSD: ffs_vnops.c,v 1.93 2007/11/26 19:02:30 pooka Exp $ */
1.3 cgd 2:
1.1 mycroft 3: /*
4: * Copyright (c) 1982, 1986, 1989, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
1.60 agc 15: * 3. Neither the name of the University nor the names of its contributors
1.1 mycroft 16: * may be used to endorse or promote products derived from this software
17: * without specific prior written permission.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS 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
25: * OR 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: *
1.12 fvdl 31: * @(#)ffs_vnops.c 8.15 (Berkeley) 5/14/95
1.1 mycroft 32: */
1.44 lukem 33:
34: #include <sys/cdefs.h>
1.92.4.1! mjf 35: __KERNEL_RCSID(0, "$NetBSD: ffs_vnops.c,v 1.93 2007/11/26 19:02:30 pooka Exp $");
1.11 mrg 36:
1.1 mycroft 37: #include <sys/param.h>
38: #include <sys/systm.h>
39: #include <sys/resourcevar.h>
40: #include <sys/kernel.h>
41: #include <sys/file.h>
42: #include <sys/stat.h>
43: #include <sys/buf.h>
1.50 jdolecek 44: #include <sys/event.h>
1.1 mycroft 45: #include <sys/proc.h>
46: #include <sys/mount.h>
47: #include <sys/vnode.h>
1.16 thorpej 48: #include <sys/pool.h>
1.6 christos 49: #include <sys/signalvar.h>
1.80 elad 50: #include <sys/kauth.h>
1.84 hannken 51: #include <sys/fstrans.h>
1.1 mycroft 52:
1.8 mycroft 53: #include <miscfs/fifofs/fifo.h>
54: #include <miscfs/genfs/genfs.h>
1.1 mycroft 55: #include <miscfs/specfs/specdev.h>
56:
57: #include <ufs/ufs/inode.h>
58: #include <ufs/ufs/dir.h>
59: #include <ufs/ufs/ufs_extern.h>
1.2 mycroft 60: #include <ufs/ufs/ufsmount.h>
1.1 mycroft 61:
62: #include <ufs/ffs/fs.h>
63: #include <ufs/ffs/ffs_extern.h>
64:
1.49 chs 65: #include <uvm/uvm.h>
66:
1.74 xtraeme 67: static int ffs_full_fsync(void *);
1.33 fvdl 68:
1.1 mycroft 69: /* Global vfs data structures for ufs. */
1.74 xtraeme 70: int (**ffs_vnodeop_p)(void *);
1.37 jdolecek 71: const struct vnodeopv_entry_desc ffs_vnodeop_entries[] = {
1.1 mycroft 72: { &vop_default_desc, vn_default_error },
73: { &vop_lookup_desc, ufs_lookup }, /* lookup */
74: { &vop_create_desc, ufs_create }, /* create */
1.5 mycroft 75: { &vop_whiteout_desc, ufs_whiteout }, /* whiteout */
1.1 mycroft 76: { &vop_mknod_desc, ufs_mknod }, /* mknod */
77: { &vop_open_desc, ufs_open }, /* open */
78: { &vop_close_desc, ufs_close }, /* close */
79: { &vop_access_desc, ufs_access }, /* access */
80: { &vop_getattr_desc, ufs_getattr }, /* getattr */
81: { &vop_setattr_desc, ufs_setattr }, /* setattr */
82: { &vop_read_desc, ffs_read }, /* read */
83: { &vop_write_desc, ffs_write }, /* write */
1.4 mycroft 84: { &vop_lease_desc, ufs_lease_check }, /* lease */
1.1 mycroft 85: { &vop_ioctl_desc, ufs_ioctl }, /* ioctl */
1.19 wrstuden 86: { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */
1.9 mycroft 87: { &vop_poll_desc, ufs_poll }, /* poll */
1.50 jdolecek 88: { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */
1.12 fvdl 89: { &vop_revoke_desc, ufs_revoke }, /* revoke */
1.1 mycroft 90: { &vop_mmap_desc, ufs_mmap }, /* mmap */
91: { &vop_fsync_desc, ffs_fsync }, /* fsync */
92: { &vop_seek_desc, ufs_seek }, /* seek */
93: { &vop_remove_desc, ufs_remove }, /* remove */
94: { &vop_link_desc, ufs_link }, /* link */
95: { &vop_rename_desc, ufs_rename }, /* rename */
96: { &vop_mkdir_desc, ufs_mkdir }, /* mkdir */
97: { &vop_rmdir_desc, ufs_rmdir }, /* rmdir */
98: { &vop_symlink_desc, ufs_symlink }, /* symlink */
99: { &vop_readdir_desc, ufs_readdir }, /* readdir */
100: { &vop_readlink_desc, ufs_readlink }, /* readlink */
101: { &vop_abortop_desc, ufs_abortop }, /* abortop */
102: { &vop_inactive_desc, ufs_inactive }, /* inactive */
103: { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */
1.90 hannken 104: { &vop_lock_desc, ffs_lock }, /* lock */
105: { &vop_unlock_desc, ffs_unlock }, /* unlock */
1.1 mycroft 106: { &vop_bmap_desc, ufs_bmap }, /* bmap */
107: { &vop_strategy_desc, ufs_strategy }, /* strategy */
108: { &vop_print_desc, ufs_print }, /* print */
1.90 hannken 109: { &vop_islocked_desc, ffs_islocked }, /* islocked */
1.1 mycroft 110: { &vop_pathconf_desc, ufs_pathconf }, /* pathconf */
111: { &vop_advlock_desc, ufs_advlock }, /* advlock */
1.8 mycroft 112: { &vop_bwrite_desc, vn_bwrite }, /* bwrite */
1.88 yamt 113: { &vop_getpages_desc, genfs_getpages }, /* getpages */
1.75 yamt 114: { &vop_putpages_desc, genfs_putpages }, /* putpages */
1.73 thorpej 115: { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */
116: { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */
117: { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */
118: { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */
119: { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */
120: { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */
1.35 chs 121: { NULL, NULL }
1.1 mycroft 122: };
1.37 jdolecek 123: const struct vnodeopv_desc ffs_vnodeop_opv_desc =
1.1 mycroft 124: { &ffs_vnodeop_p, ffs_vnodeop_entries };
125:
1.74 xtraeme 126: int (**ffs_specop_p)(void *);
1.37 jdolecek 127: const struct vnodeopv_entry_desc ffs_specop_entries[] = {
1.1 mycroft 128: { &vop_default_desc, vn_default_error },
129: { &vop_lookup_desc, spec_lookup }, /* lookup */
130: { &vop_create_desc, spec_create }, /* create */
131: { &vop_mknod_desc, spec_mknod }, /* mknod */
132: { &vop_open_desc, spec_open }, /* open */
133: { &vop_close_desc, ufsspec_close }, /* close */
134: { &vop_access_desc, ufs_access }, /* access */
135: { &vop_getattr_desc, ufs_getattr }, /* getattr */
136: { &vop_setattr_desc, ufs_setattr }, /* setattr */
137: { &vop_read_desc, ufsspec_read }, /* read */
138: { &vop_write_desc, ufsspec_write }, /* write */
1.4 mycroft 139: { &vop_lease_desc, spec_lease_check }, /* lease */
1.1 mycroft 140: { &vop_ioctl_desc, spec_ioctl }, /* ioctl */
1.19 wrstuden 141: { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */
1.9 mycroft 142: { &vop_poll_desc, spec_poll }, /* poll */
1.50 jdolecek 143: { &vop_kqfilter_desc, spec_kqfilter }, /* kqfilter */
1.12 fvdl 144: { &vop_revoke_desc, spec_revoke }, /* revoke */
1.1 mycroft 145: { &vop_mmap_desc, spec_mmap }, /* mmap */
146: { &vop_fsync_desc, ffs_fsync }, /* fsync */
147: { &vop_seek_desc, spec_seek }, /* seek */
148: { &vop_remove_desc, spec_remove }, /* remove */
149: { &vop_link_desc, spec_link }, /* link */
150: { &vop_rename_desc, spec_rename }, /* rename */
151: { &vop_mkdir_desc, spec_mkdir }, /* mkdir */
152: { &vop_rmdir_desc, spec_rmdir }, /* rmdir */
153: { &vop_symlink_desc, spec_symlink }, /* symlink */
154: { &vop_readdir_desc, spec_readdir }, /* readdir */
155: { &vop_readlink_desc, spec_readlink }, /* readlink */
156: { &vop_abortop_desc, spec_abortop }, /* abortop */
157: { &vop_inactive_desc, ufs_inactive }, /* inactive */
158: { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */
1.90 hannken 159: { &vop_lock_desc, ffs_lock }, /* lock */
160: { &vop_unlock_desc, ffs_unlock }, /* unlock */
1.1 mycroft 161: { &vop_bmap_desc, spec_bmap }, /* bmap */
162: { &vop_strategy_desc, spec_strategy }, /* strategy */
163: { &vop_print_desc, ufs_print }, /* print */
1.90 hannken 164: { &vop_islocked_desc, ffs_islocked }, /* islocked */
1.1 mycroft 165: { &vop_pathconf_desc, spec_pathconf }, /* pathconf */
166: { &vop_advlock_desc, spec_advlock }, /* advlock */
1.8 mycroft 167: { &vop_bwrite_desc, vn_bwrite }, /* bwrite */
1.38 chs 168: { &vop_getpages_desc, spec_getpages }, /* getpages */
169: { &vop_putpages_desc, spec_putpages }, /* putpages */
1.73 thorpej 170: { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */
171: { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */
172: { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */
173: { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */
174: { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */
175: { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */
1.35 chs 176: { NULL, NULL }
1.1 mycroft 177: };
1.37 jdolecek 178: const struct vnodeopv_desc ffs_specop_opv_desc =
1.1 mycroft 179: { &ffs_specop_p, ffs_specop_entries };
180:
1.74 xtraeme 181: int (**ffs_fifoop_p)(void *);
1.37 jdolecek 182: const struct vnodeopv_entry_desc ffs_fifoop_entries[] = {
1.1 mycroft 183: { &vop_default_desc, vn_default_error },
184: { &vop_lookup_desc, fifo_lookup }, /* lookup */
185: { &vop_create_desc, fifo_create }, /* create */
186: { &vop_mknod_desc, fifo_mknod }, /* mknod */
187: { &vop_open_desc, fifo_open }, /* open */
188: { &vop_close_desc, ufsfifo_close }, /* close */
189: { &vop_access_desc, ufs_access }, /* access */
190: { &vop_getattr_desc, ufs_getattr }, /* getattr */
191: { &vop_setattr_desc, ufs_setattr }, /* setattr */
192: { &vop_read_desc, ufsfifo_read }, /* read */
193: { &vop_write_desc, ufsfifo_write }, /* write */
1.4 mycroft 194: { &vop_lease_desc, fifo_lease_check }, /* lease */
1.1 mycroft 195: { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */
1.19 wrstuden 196: { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */
1.9 mycroft 197: { &vop_poll_desc, fifo_poll }, /* poll */
1.50 jdolecek 198: { &vop_kqfilter_desc, fifo_kqfilter }, /* kqfilter */
1.12 fvdl 199: { &vop_revoke_desc, fifo_revoke }, /* revoke */
1.1 mycroft 200: { &vop_mmap_desc, fifo_mmap }, /* mmap */
201: { &vop_fsync_desc, ffs_fsync }, /* fsync */
202: { &vop_seek_desc, fifo_seek }, /* seek */
203: { &vop_remove_desc, fifo_remove }, /* remove */
204: { &vop_link_desc, fifo_link }, /* link */
205: { &vop_rename_desc, fifo_rename }, /* rename */
206: { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */
207: { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */
208: { &vop_symlink_desc, fifo_symlink }, /* symlink */
209: { &vop_readdir_desc, fifo_readdir }, /* readdir */
210: { &vop_readlink_desc, fifo_readlink }, /* readlink */
211: { &vop_abortop_desc, fifo_abortop }, /* abortop */
212: { &vop_inactive_desc, ufs_inactive }, /* inactive */
213: { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */
1.90 hannken 214: { &vop_lock_desc, ffs_lock }, /* lock */
215: { &vop_unlock_desc, ffs_unlock }, /* unlock */
1.1 mycroft 216: { &vop_bmap_desc, fifo_bmap }, /* bmap */
217: { &vop_strategy_desc, fifo_strategy }, /* strategy */
218: { &vop_print_desc, ufs_print }, /* print */
1.90 hannken 219: { &vop_islocked_desc, ffs_islocked }, /* islocked */
1.1 mycroft 220: { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */
221: { &vop_advlock_desc, fifo_advlock }, /* advlock */
1.8 mycroft 222: { &vop_bwrite_desc, vn_bwrite }, /* bwrite */
1.40 sommerfe 223: { &vop_putpages_desc, fifo_putpages }, /* putpages */
1.73 thorpej 224: { &vop_openextattr_desc, ffs_openextattr }, /* openextattr */
225: { &vop_closeextattr_desc, ffs_closeextattr }, /* closeextattr */
226: { &vop_getextattr_desc, ffs_getextattr }, /* getextattr */
227: { &vop_setextattr_desc, ffs_setextattr }, /* setextattr */
228: { &vop_listextattr_desc, ffs_listextattr }, /* listextattr */
229: { &vop_deleteextattr_desc, ffs_deleteextattr }, /* deleteextattr */
1.35 chs 230: { NULL, NULL }
1.1 mycroft 231: };
1.37 jdolecek 232: const struct vnodeopv_desc ffs_fifoop_opv_desc =
1.1 mycroft 233: { &ffs_fifoop_p, ffs_fifoop_entries };
234:
235: #include <ufs/ufs/ufs_readwrite.c>
1.20 fvdl 236:
1.33 fvdl 237: int
1.70 thorpej 238: ffs_fsync(void *v)
1.33 fvdl 239: {
240: struct vop_fsync_args /* {
241: struct vnode *a_vp;
1.80 elad 242: kauth_cred_t a_cred;
1.33 fvdl 243: int a_flags;
1.46 chs 244: off_t a_offlo;
245: off_t a_offhi;
1.77 christos 246: struct lwp *a_l;
1.33 fvdl 247: } */ *ap = v;
1.35 chs 248: struct buf *bp;
1.33 fvdl 249: int s, num, error, i;
250: struct indir ia[NIADDR + 1];
251: int bsize;
1.45 simonb 252: daddr_t blk_high;
1.33 fvdl 253: struct vnode *vp;
254:
1.84 hannken 255: vp = ap->a_vp;
256:
1.87 hannken 257: fstrans_start(vp->v_mount, FSTRANS_LAZY);
1.33 fvdl 258: /*
259: * XXX no easy way to sync a range in a file with softdep.
260: */
1.84 hannken 261: if ((ap->a_offlo == 0 && ap->a_offhi == 0) || DOINGSOFTDEP(vp) ||
262: (vp->v_type != VREG)) {
263: error = ffs_full_fsync(v);
264: goto out;
265: }
1.33 fvdl 266:
1.84 hannken 267: bsize = vp->v_mount->mnt_stat.f_iosize;
1.33 fvdl 268: blk_high = ap->a_offhi / bsize;
269: if (ap->a_offhi % bsize != 0)
270: blk_high++;
271:
272: /*
1.35 chs 273: * First, flush all pages in range.
1.33 fvdl 274: */
1.35 chs 275:
1.64 dbj 276: simple_lock(&vp->v_interlock);
277: error = VOP_PUTPAGES(vp, trunc_page(ap->a_offlo),
278: round_page(ap->a_offhi), PGO_CLEANIT |
279: ((ap->a_flags & FSYNC_WAIT) ? PGO_SYNCIO : 0));
280: if (error) {
1.84 hannken 281: goto out;
1.39 chs 282: }
1.33 fvdl 283:
284: /*
1.35 chs 285: * Then, flush indirect blocks.
1.33 fvdl 286: */
1.35 chs 287:
1.41 chs 288: s = splbio();
1.61 kleink 289: if (blk_high >= NDADDR) {
1.33 fvdl 290: error = ufs_getlbns(vp, blk_high, ia, &num);
1.42 chs 291: if (error) {
292: splx(s);
1.84 hannken 293: goto out;
1.42 chs 294: }
1.33 fvdl 295: for (i = 0; i < num; i++) {
1.35 chs 296: bp = incore(vp, ia[i].in_lbn);
1.62 dbj 297: if (bp != NULL) {
298: simple_lock(&bp->b_interlock);
299: if (!(bp->b_flags & B_BUSY) && (bp->b_flags & B_DELWRI)) {
300: bp->b_flags |= B_BUSY | B_VFLUSH;
301: simple_unlock(&bp->b_interlock);
302: splx(s);
303: bawrite(bp);
304: s = splbio();
305: } else {
306: simple_unlock(&bp->b_interlock);
307: }
1.33 fvdl 308: }
309: }
310: }
311:
312: if (ap->a_flags & FSYNC_WAIT) {
1.54 pk 313: simple_lock(&global_v_numoutput_slock);
1.33 fvdl 314: while (vp->v_numoutput > 0) {
1.92 ad 315: vp->v_iflag |= VI_BWAIT;
1.54 pk 316: ltsleep(&vp->v_numoutput, PRIBIO + 1, "fsync_range", 0,
317: &global_v_numoutput_slock);
1.33 fvdl 318: }
1.54 pk 319: simple_unlock(&global_v_numoutput_slock);
1.33 fvdl 320: }
1.34 fvdl 321: splx(s);
1.33 fvdl 322:
1.76 yamt 323: error = ffs_update(vp, NULL, NULL,
1.66 thorpej 324: ((ap->a_flags & (FSYNC_WAIT | FSYNC_DATAONLY)) == FSYNC_WAIT)
1.67 wrstuden 325: ? UPDATE_WAIT : 0);
326:
327: if (error == 0 && ap->a_flags & FSYNC_CACHE) {
328: int l = 0;
329: VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &l, FWRITE,
1.92.4.1! mjf 330: curlwp->l_cred);
1.67 wrstuden 331: }
332:
1.84 hannken 333: out:
334: fstrans_done(vp->v_mount);
1.67 wrstuden 335: return error;
1.33 fvdl 336: }
337:
1.20 fvdl 338: /*
339: * Synch an open file.
340: */
341: /* ARGSUSED */
1.33 fvdl 342: static int
1.70 thorpej 343: ffs_full_fsync(void *v)
1.20 fvdl 344: {
1.29 mycroft 345: struct vop_fsync_args /* {
1.20 fvdl 346: struct vnode *a_vp;
1.80 elad 347: kauth_cred_t a_cred;
1.20 fvdl 348: int a_flags;
1.46 chs 349: off_t a_offlo;
350: off_t a_offhi;
1.77 christos 351: struct lwp *a_l;
1.20 fvdl 352: } */ *ap = v;
353: struct vnode *vp = ap->a_vp;
354: struct buf *bp, *nbp;
1.47 fvdl 355: int s, error, passes, skipmeta, inodedeps_only, waitfor;
1.24 fvdl 356:
1.20 fvdl 357: if (vp->v_type == VBLK &&
358: vp->v_specmountpoint != NULL &&
359: (vp->v_specmountpoint->mnt_flag & MNT_SOFTDEP))
360: softdep_fsync_mountdev(vp);
1.21 perseant 361:
1.47 fvdl 362: inodedeps_only = DOINGSOFTDEP(vp) && (ap->a_flags & FSYNC_RECLAIM)
1.89 pooka 363: && UVM_OBJ_IS_CLEAN(&vp->v_uobj) && LIST_EMPTY(&vp->v_dirtyblkhd);
1.47 fvdl 364:
1.35 chs 365: /*
366: * Flush all dirty data associated with a vnode.
1.20 fvdl 367: */
1.35 chs 368:
1.72 yamt 369: if (vp->v_type == VREG || vp->v_type == VBLK) {
1.46 chs 370: simple_lock(&vp->v_interlock);
371: error = VOP_PUTPAGES(vp, 0, 0, PGO_ALLPAGES | PGO_CLEANIT |
1.84 hannken 372: ((ap->a_flags & FSYNC_WAIT) ? PGO_SYNCIO : 0) |
1.85 hannken 373: (fstrans_getstate(vp->v_mount) == FSTRANS_SUSPENDING ?
1.84 hannken 374: PGO_FREE : 0));
1.39 chs 375: if (error) {
376: return error;
377: }
1.35 chs 378: }
379:
1.20 fvdl 380: passes = NIADDR + 1;
381: skipmeta = 0;
1.61 kleink 382: if (ap->a_flags & FSYNC_WAIT)
1.20 fvdl 383: skipmeta = 1;
384: s = splbio();
1.35 chs 385:
1.20 fvdl 386: loop:
1.35 chs 387: LIST_FOREACH(bp, &vp->v_dirtyblkhd, b_vnbufs)
1.20 fvdl 388: bp->b_flags &= ~B_SCANNED;
1.29 mycroft 389: for (bp = LIST_FIRST(&vp->v_dirtyblkhd); bp; bp = nbp) {
390: nbp = LIST_NEXT(bp, b_vnbufs);
1.63 dbj 391: simple_lock(&bp->b_interlock);
392: if (bp->b_flags & (B_BUSY | B_SCANNED)) {
393: simple_unlock(&bp->b_interlock);
1.20 fvdl 394: continue;
1.63 dbj 395: }
1.20 fvdl 396: if ((bp->b_flags & B_DELWRI) == 0)
397: panic("ffs_fsync: not dirty");
1.63 dbj 398: if (skipmeta && bp->b_lblkno < 0) {
399: simple_unlock(&bp->b_interlock);
1.20 fvdl 400: continue;
1.63 dbj 401: }
402: simple_unlock(&bp->b_interlock);
1.20 fvdl 403: bp->b_flags |= B_BUSY | B_VFLUSH | B_SCANNED;
404: splx(s);
405: /*
406: * On our final pass through, do all I/O synchronously
407: * so that we can find out if our flush is failing
408: * because of write errors.
409: */
410: if (passes > 0 || !(ap->a_flags & FSYNC_WAIT))
411: (void) bawrite(bp);
412: else if ((error = bwrite(bp)) != 0)
413: return (error);
414: s = splbio();
415: /*
416: * Since we may have slept during the I/O, we need
417: * to start from a known point.
418: */
1.29 mycroft 419: nbp = LIST_FIRST(&vp->v_dirtyblkhd);
1.20 fvdl 420: }
1.61 kleink 421: if (skipmeta) {
1.20 fvdl 422: skipmeta = 0;
423: goto loop;
424: }
425: if (ap->a_flags & FSYNC_WAIT) {
1.54 pk 426: simple_lock(&global_v_numoutput_slock);
1.20 fvdl 427: while (vp->v_numoutput) {
1.92 ad 428: vp->v_iflag |= VI_BWAIT;
1.54 pk 429: (void) ltsleep(&vp->v_numoutput, PRIBIO + 1,
430: "ffsfsync", 0, &global_v_numoutput_slock);
1.20 fvdl 431: }
1.54 pk 432: simple_unlock(&global_v_numoutput_slock);
1.29 mycroft 433: splx(s);
1.20 fvdl 434:
1.69 perry 435: /*
1.20 fvdl 436: * Ensure that any filesystem metadata associated
437: * with the vnode has been written.
438: */
1.31 mycroft 439: if ((error = softdep_sync_metadata(ap)) != 0)
1.20 fvdl 440: return (error);
1.29 mycroft 441:
1.20 fvdl 442: s = splbio();
1.29 mycroft 443: if (!LIST_EMPTY(&vp->v_dirtyblkhd)) {
444: /*
445: * Block devices associated with filesystems may
446: * have new I/O requests posted for them even if
447: * the vnode is locked, so no amount of trying will
448: * get them clean. Thus we give block devices a
449: * good effort, then just give up. For all other file
450: * types, go around and try again until it is clean.
451: */
452: if (passes > 0) {
453: passes--;
454: goto loop;
455: }
1.20 fvdl 456: #ifdef DIAGNOSTIC
1.29 mycroft 457: if (vp->v_type != VBLK)
458: vprint("ffs_fsync: dirty", vp);
1.20 fvdl 459: #endif
1.29 mycroft 460: }
461: }
462: splx(s);
1.47 fvdl 463:
464: if (inodedeps_only)
465: waitfor = 0;
466: else
467: waitfor = (ap->a_flags & FSYNC_WAIT) ? UPDATE_WAIT : 0;
1.76 yamt 468: error = ffs_update(vp, NULL, NULL, waitfor);
1.67 wrstuden 469:
1.68 wrstuden 470: if (error == 0 && ap->a_flags & FSYNC_CACHE) {
1.67 wrstuden 471: int i = 0;
472: VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &i, FWRITE,
1.92.4.1! mjf 473: curlwp->l_cred);
1.67 wrstuden 474: }
475:
476: return error;
1.20 fvdl 477: }
1.1 mycroft 478:
479: /*
480: * Reclaim an inode so that it can be used for other purposes.
481: */
482: int
1.70 thorpej 483: ffs_reclaim(void *v)
1.6 christos 484: {
1.1 mycroft 485: struct vop_reclaim_args /* {
486: struct vnode *a_vp;
1.77 christos 487: struct lwp *a_l;
1.6 christos 488: } */ *ap = v;
1.26 augustss 489: struct vnode *vp = ap->a_vp;
1.56 fvdl 490: struct inode *ip = VTOI(vp);
1.84 hannken 491: struct mount *mp = vp->v_mount;
1.56 fvdl 492: struct ufsmount *ump = ip->i_ump;
1.1 mycroft 493: int error;
494:
1.87 hannken 495: fstrans_start(mp, FSTRANS_LAZY);
1.92.4.1! mjf 496: if ((error = ufs_reclaim(vp)) != 0) {
1.84 hannken 497: fstrans_done(mp);
1.1 mycroft 498: return (error);
1.84 hannken 499: }
1.57 fvdl 500: if (ip->i_din.ffs1_din != NULL) {
501: if (ump->um_fstype == UFS1)
502: pool_put(&ffs_dinode1_pool, ip->i_din.ffs1_din);
503: else
504: pool_put(&ffs_dinode2_pool, ip->i_din.ffs2_din);
505: }
1.16 thorpej 506: /*
507: * XXX MFS ends up here, too, to free an inode. Should we create
508: * XXX a separate pool for MFS inodes?
509: */
1.86 ad 510: genfs_node_destroy(vp);
1.16 thorpej 511: pool_put(&ffs_inode_pool, vp->v_data);
1.1 mycroft 512: vp->v_data = NULL;
1.84 hannken 513: fstrans_done(mp);
1.1 mycroft 514: return (0);
1.35 chs 515: }
516:
1.88 yamt 517: #if 0
1.39 chs 518: int
519: ffs_getpages(void *v)
520: {
521: struct vop_getpages_args /* {
522: struct vnode *a_vp;
523: voff_t a_offset;
524: struct vm_page **a_m;
525: int *a_count;
526: int a_centeridx;
527: vm_prot_t a_access_type;
528: int a_advice;
529: int a_flags;
530: } */ *ap = v;
531: struct vnode *vp = ap->a_vp;
532: struct inode *ip = VTOI(vp);
533: struct fs *fs = ip->i_fs;
534:
535: /*
536: * don't allow a softdep write to create pages for only part of a block.
537: * the dependency tracking requires that all pages be in memory for
538: * a block involved in a dependency.
539: */
540:
541: if (ap->a_flags & PGO_OVERWRITE &&
542: (blkoff(fs, ap->a_offset) != 0 ||
543: blkoff(fs, *ap->a_count << PAGE_SHIFT) != 0) &&
544: DOINGSOFTDEP(ap->a_vp)) {
545: if ((ap->a_flags & PGO_LOCKED) == 0) {
1.46 chs 546: simple_unlock(&vp->v_interlock);
1.39 chs 547: }
548: return EINVAL;
549: }
550: return genfs_getpages(v);
1.49 chs 551: }
1.88 yamt 552: #endif
1.49 chs 553:
1.35 chs 554: /*
555: * Return the last logical file offset that should be written for this file
556: * if we're doing a write that ends at "size".
557: */
1.39 chs 558:
559: void
1.83 christos 560: ffs_gop_size(struct vnode *vp, off_t size, off_t *eobp, int flags)
1.35 chs 561: {
1.39 chs 562: struct inode *ip = VTOI(vp);
1.35 chs 563: struct fs *fs = ip->i_fs;
1.52 fvdl 564: daddr_t olbn, nlbn;
1.55 perseant 565:
1.56 fvdl 566: olbn = lblkno(fs, ip->i_size);
1.39 chs 567: nlbn = lblkno(fs, size);
1.35 chs 568: if (nlbn < NDADDR && olbn <= nlbn) {
1.39 chs 569: *eobp = fragroundup(fs, size);
1.35 chs 570: } else {
1.39 chs 571: *eobp = blkroundup(fs, size);
1.35 chs 572: }
1.1 mycroft 573: }
1.73 thorpej 574:
575: int
576: ffs_openextattr(void *v)
577: {
578: struct vop_openextattr_args /* {
579: struct vnode *a_vp;
1.80 elad 580: kauth_cred_t a_cred;
1.73 thorpej 581: struct proc *a_p;
582: } */ *ap = v;
583: struct inode *ip = VTOI(ap->a_vp);
584: struct fs *fs = ip->i_fs;
585:
586: /* Not supported for UFS1 file systems. */
587: if (fs->fs_magic == FS_UFS1_MAGIC)
588: return (EOPNOTSUPP);
589:
590: /* XXX Not implemented for UFS2 file systems. */
591: return (EOPNOTSUPP);
592: }
593:
594: int
595: ffs_closeextattr(void *v)
596: {
597: struct vop_closeextattr_args /* {
598: struct vnode *a_vp;
599: int a_commit;
1.80 elad 600: kauth_cred_t a_cred;
1.73 thorpej 601: struct proc *a_p;
602: } */ *ap = v;
603: struct inode *ip = VTOI(ap->a_vp);
604: struct fs *fs = ip->i_fs;
605:
606: /* Not supported for UFS1 file systems. */
607: if (fs->fs_magic == FS_UFS1_MAGIC)
608: return (EOPNOTSUPP);
609:
610: /* XXX Not implemented for UFS2 file systems. */
611: return (EOPNOTSUPP);
612: }
613:
614: int
615: ffs_getextattr(void *v)
616: {
617: struct vop_getextattr_args /* {
618: struct vnode *a_vp;
619: int a_attrnamespace;
620: const char *a_name;
621: struct uio *a_uio;
622: size_t *a_size;
1.80 elad 623: kauth_cred_t a_cred;
1.73 thorpej 624: struct proc *a_p;
625: } */ *ap = v;
1.84 hannken 626: struct vnode *vp = ap->a_vp;
627: struct inode *ip = VTOI(vp);
1.73 thorpej 628: struct fs *fs = ip->i_fs;
629:
630: if (fs->fs_magic == FS_UFS1_MAGIC) {
631: #ifdef UFS_EXTATTR
1.84 hannken 632: int error;
633:
1.87 hannken 634: fstrans_start(vp->v_mount, FSTRANS_SHARED);
1.84 hannken 635: error = ufs_getextattr(ap);
636: fstrans_done(vp->v_mount);
637: return error;
1.73 thorpej 638: #else
639: return (EOPNOTSUPP);
640: #endif
641: }
642:
643: /* XXX Not implemented for UFS2 file systems. */
644: return (EOPNOTSUPP);
645: }
646:
647: int
648: ffs_setextattr(void *v)
649: {
650: struct vop_setextattr_args /* {
651: struct vnode *a_vp;
652: int a_attrnamespace;
653: const char *a_name;
654: struct uio *a_uio;
1.80 elad 655: kauth_cred_t a_cred;
1.73 thorpej 656: struct proc *a_p;
657: } */ *ap = v;
1.84 hannken 658: struct vnode *vp = ap->a_vp;
659: struct inode *ip = VTOI(vp);
1.73 thorpej 660: struct fs *fs = ip->i_fs;
661:
662: if (fs->fs_magic == FS_UFS1_MAGIC) {
663: #ifdef UFS_EXTATTR
1.84 hannken 664: int error;
665:
1.87 hannken 666: fstrans_start(vp->v_mount, FSTRANS_SHARED);
1.84 hannken 667: error = ufs_setextattr(ap);
668: fstrans_done(vp->v_mount);
669: return error;
1.73 thorpej 670: #else
671: return (EOPNOTSUPP);
672: #endif
673: }
674:
675: /* XXX Not implemented for UFS2 file systems. */
676: return (EOPNOTSUPP);
677: }
678:
679: int
680: ffs_listextattr(void *v)
681: {
682: struct vop_listextattr_args /* {
683: struct vnode *a_vp;
684: int a_attrnamespace;
685: struct uio *a_uio;
686: size_t *a_size;
1.80 elad 687: kauth_cred_t a_cred;
1.73 thorpej 688: struct proc *a_p;
689: } */ *ap = v;
690: struct inode *ip = VTOI(ap->a_vp);
691: struct fs *fs = ip->i_fs;
692:
693: /* Not supported for UFS1 file systems. */
694: if (fs->fs_magic == FS_UFS1_MAGIC)
695: return (EOPNOTSUPP);
696:
697: /* XXX Not implemented for UFS2 file systems. */
698: return (EOPNOTSUPP);
699: }
700:
701: int
702: ffs_deleteextattr(void *v)
703: {
704: struct vop_deleteextattr_args /* {
705: struct vnode *a_vp;
706: int a_attrnamespace;
1.80 elad 707: kauth_cred_t a_cred;
1.73 thorpej 708: struct proc *a_p;
709: } */ *ap = v;
1.84 hannken 710: struct vnode *vp = ap->a_vp;
711: struct inode *ip = VTOI(vp);
1.73 thorpej 712: struct fs *fs = ip->i_fs;
713:
714: if (fs->fs_magic == FS_UFS1_MAGIC) {
715: #ifdef UFS_EXTATTR
1.84 hannken 716: int error;
717:
1.87 hannken 718: fstrans_start(vp->v_mount, FSTRANS_SHARED);
1.84 hannken 719: error = ufs_deleteextattr(ap);
720: fstrans_done(vp->v_mount);
721: return error;
1.73 thorpej 722: #else
723: return (EOPNOTSUPP);
724: #endif
725: }
726:
727: /* XXX Not implemented for UFS2 file systems. */
728: return (EOPNOTSUPP);
729: }
1.90 hannken 730:
731: /*
732: * Lock the node.
733: */
734: int
735: ffs_lock(void *v)
736: {
737: struct vop_lock_args /* {
738: struct vnode *a_vp;
739: int a_flags;
740: } */ *ap = v;
741: struct vnode *vp = ap->a_vp;
742: struct mount *mp = vp->v_mount;
1.91 hannken 743: struct lock *lkp;
744: int flags = ap->a_flags;
745: int result;
1.90 hannken 746:
747: /*
748: * Fake lock during file system suspension.
749: */
750: if ((vp->v_type == VREG || vp->v_type == VDIR) &&
751: fstrans_is_owner(mp) &&
752: fstrans_getstate(mp) == FSTRANS_SUSPENDING) {
1.91 hannken 753: if ((flags & LK_INTERLOCK) != 0)
1.90 hannken 754: simple_unlock(&vp->v_interlock);
755: return 0;
756: }
1.91 hannken 757:
758: if ((flags & LK_TYPE_MASK) == LK_DRAIN)
759: return (lockmgr(vp->v_vnlock, flags, &vp->v_interlock));
760:
761: KASSERT((flags & ~(LK_SHARED | LK_EXCLUSIVE | LK_SLEEPFAIL |
762: LK_INTERLOCK | LK_NOWAIT | LK_SETRECURSE | LK_CANRECURSE)) == 0);
763: for (;;) {
764: if ((flags & LK_INTERLOCK) == 0) {
765: simple_lock(&vp->v_interlock);
766: flags |= LK_INTERLOCK;
767: }
768: lkp = vp->v_vnlock;
769: result = lockmgr(lkp, flags, &vp->v_interlock);
770: if (lkp == vp->v_vnlock || result != 0)
771: return result;
772: /*
773: * Apparent success, except that the vnode mutated between
774: * snapshot file vnode and regular file vnode while this
775: * thread slept. The lock currently held is not the right
776: * lock. Release it, and try to get the new lock.
777: */
778: (void) lockmgr(lkp, LK_RELEASE, NULL);
779: flags &= ~LK_INTERLOCK;
780: }
1.90 hannken 781: }
782:
783: /*
784: * Unlock the node.
785: */
786: int
787: ffs_unlock(void *v)
788: {
789: struct vop_unlock_args /* {
790: struct vnode *a_vp;
791: int a_flags;
792: } */ *ap = v;
793: struct vnode *vp = ap->a_vp;
794: struct mount *mp = vp->v_mount;
795:
796: /*
797: * Fake unlock during file system suspension.
798: */
799: if ((vp->v_type == VREG || vp->v_type == VDIR) &&
800: fstrans_is_owner(mp) &&
801: fstrans_getstate(mp) == FSTRANS_SUSPENDING) {
802: if ((ap->a_flags & LK_INTERLOCK) != 0)
803: simple_unlock(&vp->v_interlock);
804: return 0;
805: }
806: return (lockmgr(vp->v_vnlock, ap->a_flags | LK_RELEASE,
807: &vp->v_interlock));
808: }
809:
810: /*
811: * Return whether or not the node is locked.
812: */
813: int
814: ffs_islocked(void *v)
815: {
816: struct vop_islocked_args /* {
817: struct vnode *a_vp;
818: } */ *ap = v;
819: struct vnode *vp = ap->a_vp;
820:
821: return (lockstatus(vp->v_vnlock));
822: }
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