Annotation of src/sys/ufs/ffs/ffs_vnops.c, Revision 1.89.6.2
1.89.6.2! pooka 1: /* $NetBSD: ffs_vnops.c,v 1.89 2007/07/20 16:46:45 pooka Exp $ */
! 2:
! 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.
! 15: * 3. Neither the name of the University nor the names of its contributors
! 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: *
! 31: * @(#)ffs_vnops.c 8.15 (Berkeley) 5/14/95
! 32: */
! 33:
! 34: #include <sys/cdefs.h>
! 35: __KERNEL_RCSID(0, "$NetBSD: ffs_vnops.c,v 1.89 2007/07/20 16:46:45 pooka Exp $");
! 36:
! 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>
! 44: #include <sys/event.h>
! 45: #include <sys/proc.h>
! 46: #include <sys/mount.h>
! 47: #include <sys/vnode.h>
! 48: #include <sys/pool.h>
! 49: #include <sys/signalvar.h>
! 50: #include <sys/kauth.h>
! 51: #include <sys/fstrans.h>
! 52:
! 53: #include <miscfs/fifofs/fifo.h>
! 54: #include <miscfs/genfs/genfs.h>
! 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>
! 60: #include <ufs/ufs/ufsmount.h>
! 61:
! 62: #include <ufs/ffs/fs.h>
! 63: #include <ufs/ffs/ffs_extern.h>
! 64:
! 65: #include <uvm/uvm.h>
! 66:
! 67: static int ffs_full_fsync(void *);
! 68:
! 69: /* Global vfs data structures for ufs. */
! 70: int (**ffs_vnodeop_p)(void *);
! 71: const struct vnodeopv_entry_desc ffs_vnodeop_entries[] = {
! 72: { &vop_default_desc, vn_default_error },
! 73: { &vop_lookup_desc, ufs_lookup }, /* lookup */
! 74: { &vop_create_desc, ufs_create }, /* create */
! 75: { &vop_whiteout_desc, ufs_whiteout }, /* whiteout */
! 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 */
! 84: { &vop_lease_desc, ufs_lease_check }, /* lease */
! 85: { &vop_ioctl_desc, ufs_ioctl }, /* ioctl */
! 86: { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */
! 87: { &vop_poll_desc, ufs_poll }, /* poll */
! 88: { &vop_kqfilter_desc, genfs_kqfilter }, /* kqfilter */
! 89: { &vop_revoke_desc, ufs_revoke }, /* revoke */
! 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 */
! 104: { &vop_lock_desc, ufs_lock }, /* lock */
! 105: { &vop_unlock_desc, ufs_unlock }, /* unlock */
! 106: { &vop_bmap_desc, ufs_bmap }, /* bmap */
! 107: { &vop_strategy_desc, ufs_strategy }, /* strategy */
! 108: { &vop_print_desc, ufs_print }, /* print */
! 109: { &vop_islocked_desc, ufs_islocked }, /* islocked */
! 110: { &vop_pathconf_desc, ufs_pathconf }, /* pathconf */
! 111: { &vop_advlock_desc, ufs_advlock }, /* advlock */
! 112: { &vop_bwrite_desc, vn_bwrite }, /* bwrite */
! 113: { &vop_getpages_desc, genfs_getpages }, /* getpages */
! 114: { &vop_putpages_desc, genfs_putpages }, /* putpages */
! 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 */
! 121: { NULL, NULL }
! 122: };
! 123: const struct vnodeopv_desc ffs_vnodeop_opv_desc =
! 124: { &ffs_vnodeop_p, ffs_vnodeop_entries };
! 125:
! 126: int (**ffs_specop_p)(void *);
! 127: const struct vnodeopv_entry_desc ffs_specop_entries[] = {
! 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 */
! 139: { &vop_lease_desc, spec_lease_check }, /* lease */
! 140: { &vop_ioctl_desc, spec_ioctl }, /* ioctl */
! 141: { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */
! 142: { &vop_poll_desc, spec_poll }, /* poll */
! 143: { &vop_kqfilter_desc, spec_kqfilter }, /* kqfilter */
! 144: { &vop_revoke_desc, spec_revoke }, /* revoke */
! 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 */
! 159: { &vop_lock_desc, ufs_lock }, /* lock */
! 160: { &vop_unlock_desc, ufs_unlock }, /* unlock */
! 161: { &vop_bmap_desc, spec_bmap }, /* bmap */
! 162: { &vop_strategy_desc, spec_strategy }, /* strategy */
! 163: { &vop_print_desc, ufs_print }, /* print */
! 164: { &vop_islocked_desc, ufs_islocked }, /* islocked */
! 165: { &vop_pathconf_desc, spec_pathconf }, /* pathconf */
! 166: { &vop_advlock_desc, spec_advlock }, /* advlock */
! 167: { &vop_bwrite_desc, vn_bwrite }, /* bwrite */
! 168: { &vop_getpages_desc, spec_getpages }, /* getpages */
! 169: { &vop_putpages_desc, spec_putpages }, /* putpages */
! 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 */
! 176: { NULL, NULL }
! 177: };
! 178: const struct vnodeopv_desc ffs_specop_opv_desc =
! 179: { &ffs_specop_p, ffs_specop_entries };
! 180:
! 181: int (**ffs_fifoop_p)(void *);
! 182: const struct vnodeopv_entry_desc ffs_fifoop_entries[] = {
! 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 */
! 194: { &vop_lease_desc, fifo_lease_check }, /* lease */
! 195: { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */
! 196: { &vop_fcntl_desc, ufs_fcntl }, /* fcntl */
! 197: { &vop_poll_desc, fifo_poll }, /* poll */
! 198: { &vop_kqfilter_desc, fifo_kqfilter }, /* kqfilter */
! 199: { &vop_revoke_desc, fifo_revoke }, /* revoke */
! 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 */
! 214: { &vop_lock_desc, ufs_lock }, /* lock */
! 215: { &vop_unlock_desc, ufs_unlock }, /* unlock */
! 216: { &vop_bmap_desc, fifo_bmap }, /* bmap */
! 217: { &vop_strategy_desc, fifo_strategy }, /* strategy */
! 218: { &vop_print_desc, ufs_print }, /* print */
! 219: { &vop_islocked_desc, ufs_islocked }, /* islocked */
! 220: { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */
! 221: { &vop_advlock_desc, fifo_advlock }, /* advlock */
! 222: { &vop_bwrite_desc, vn_bwrite }, /* bwrite */
! 223: { &vop_putpages_desc, fifo_putpages }, /* putpages */
! 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 */
! 230: { NULL, NULL }
! 231: };
! 232: const struct vnodeopv_desc ffs_fifoop_opv_desc =
! 233: { &ffs_fifoop_p, ffs_fifoop_entries };
! 234:
! 235: #include <ufs/ufs/ufs_readwrite.c>
! 236:
! 237: int
! 238: ffs_fsync(void *v)
! 239: {
! 240: struct vop_fsync_args /* {
! 241: struct vnode *a_vp;
! 242: kauth_cred_t a_cred;
! 243: int a_flags;
! 244: off_t a_offlo;
! 245: off_t a_offhi;
! 246: struct lwp *a_l;
! 247: } */ *ap = v;
! 248: struct buf *bp;
! 249: int s, num, error, i;
! 250: struct indir ia[NIADDR + 1];
! 251: int bsize;
! 252: daddr_t blk_high;
! 253: struct vnode *vp;
! 254:
! 255: vp = ap->a_vp;
! 256:
! 257: fstrans_start(vp->v_mount, FSTRANS_LAZY);
! 258: /*
! 259: * XXX no easy way to sync a range in a file with softdep.
! 260: */
! 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: }
! 266:
! 267: bsize = vp->v_mount->mnt_stat.f_iosize;
! 268: blk_high = ap->a_offhi / bsize;
! 269: if (ap->a_offhi % bsize != 0)
! 270: blk_high++;
! 271:
! 272: /*
! 273: * First, flush all pages in range.
! 274: */
! 275:
! 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) {
! 281: goto out;
! 282: }
! 283:
! 284: /*
! 285: * Then, flush indirect blocks.
! 286: */
! 287:
! 288: s = splbio();
! 289: if (blk_high >= NDADDR) {
! 290: error = ufs_getlbns(vp, blk_high, ia, &num);
! 291: if (error) {
! 292: splx(s);
! 293: goto out;
! 294: }
! 295: for (i = 0; i < num; i++) {
! 296: bp = incore(vp, ia[i].in_lbn);
! 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: }
! 308: }
! 309: }
! 310: }
! 311:
! 312: if (ap->a_flags & FSYNC_WAIT) {
! 313: simple_lock(&global_v_numoutput_slock);
! 314: while (vp->v_numoutput > 0) {
! 315: vp->v_flag |= VBWAIT;
! 316: ltsleep(&vp->v_numoutput, PRIBIO + 1, "fsync_range", 0,
! 317: &global_v_numoutput_slock);
! 318: }
! 319: simple_unlock(&global_v_numoutput_slock);
! 320: }
! 321: splx(s);
! 322:
! 323: error = ffs_update(vp, NULL, NULL,
! 324: ((ap->a_flags & (FSYNC_WAIT | FSYNC_DATAONLY)) == FSYNC_WAIT)
! 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,
! 330: ap->a_l->l_cred, ap->a_l);
! 331: }
! 332:
! 333: out:
! 334: fstrans_done(vp->v_mount);
! 335: return error;
! 336: }
! 337:
! 338: /*
! 339: * Synch an open file.
! 340: */
! 341: /* ARGSUSED */
! 342: static int
! 343: ffs_full_fsync(void *v)
! 344: {
! 345: struct vop_fsync_args /* {
! 346: struct vnode *a_vp;
! 347: kauth_cred_t a_cred;
! 348: int a_flags;
! 349: off_t a_offlo;
! 350: off_t a_offhi;
! 351: struct lwp *a_l;
! 352: } */ *ap = v;
! 353: struct vnode *vp = ap->a_vp;
! 354: struct buf *bp, *nbp;
! 355: int s, error, passes, skipmeta, inodedeps_only, waitfor;
! 356:
! 357: if (vp->v_type == VBLK &&
! 358: vp->v_specmountpoint != NULL &&
! 359: (vp->v_specmountpoint->mnt_flag & MNT_SOFTDEP))
! 360: softdep_fsync_mountdev(vp);
! 361:
! 362: inodedeps_only = DOINGSOFTDEP(vp) && (ap->a_flags & FSYNC_RECLAIM)
! 363: && UVM_OBJ_IS_CLEAN(&vp->v_uobj) && LIST_EMPTY(&vp->v_dirtyblkhd);
! 364:
! 365: /*
! 366: * Flush all dirty data associated with a vnode.
! 367: */
! 368:
! 369: if (vp->v_type == VREG || vp->v_type == VBLK) {
! 370: simple_lock(&vp->v_interlock);
! 371: error = VOP_PUTPAGES(vp, 0, 0, PGO_ALLPAGES | PGO_CLEANIT |
! 372: ((ap->a_flags & FSYNC_WAIT) ? PGO_SYNCIO : 0) |
! 373: (fstrans_getstate(vp->v_mount) == FSTRANS_SUSPENDING ?
! 374: PGO_FREE : 0));
! 375: if (error) {
! 376: return error;
! 377: }
! 378: }
! 379:
! 380: passes = NIADDR + 1;
! 381: skipmeta = 0;
! 382: if (ap->a_flags & FSYNC_WAIT)
! 383: skipmeta = 1;
! 384: s = splbio();
! 385:
! 386: loop:
! 387: LIST_FOREACH(bp, &vp->v_dirtyblkhd, b_vnbufs)
! 388: bp->b_flags &= ~B_SCANNED;
! 389: for (bp = LIST_FIRST(&vp->v_dirtyblkhd); bp; bp = nbp) {
! 390: nbp = LIST_NEXT(bp, b_vnbufs);
! 391: simple_lock(&bp->b_interlock);
! 392: if (bp->b_flags & (B_BUSY | B_SCANNED)) {
! 393: simple_unlock(&bp->b_interlock);
! 394: continue;
! 395: }
! 396: if ((bp->b_flags & B_DELWRI) == 0)
! 397: panic("ffs_fsync: not dirty");
! 398: if (skipmeta && bp->b_lblkno < 0) {
! 399: simple_unlock(&bp->b_interlock);
! 400: continue;
! 401: }
! 402: simple_unlock(&bp->b_interlock);
! 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: */
! 419: nbp = LIST_FIRST(&vp->v_dirtyblkhd);
! 420: }
! 421: if (skipmeta) {
! 422: skipmeta = 0;
! 423: goto loop;
! 424: }
! 425: if (ap->a_flags & FSYNC_WAIT) {
! 426: simple_lock(&global_v_numoutput_slock);
! 427: while (vp->v_numoutput) {
! 428: vp->v_flag |= VBWAIT;
! 429: (void) ltsleep(&vp->v_numoutput, PRIBIO + 1,
! 430: "ffsfsync", 0, &global_v_numoutput_slock);
! 431: }
! 432: simple_unlock(&global_v_numoutput_slock);
! 433: splx(s);
! 434:
! 435: /*
! 436: * Ensure that any filesystem metadata associated
! 437: * with the vnode has been written.
! 438: */
! 439: if ((error = softdep_sync_metadata(ap)) != 0)
! 440: return (error);
! 441:
! 442: s = splbio();
! 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: }
! 456: #ifdef DIAGNOSTIC
! 457: if (vp->v_type != VBLK)
! 458: vprint("ffs_fsync: dirty", vp);
! 459: #endif
! 460: }
! 461: }
! 462: splx(s);
! 463:
! 464: if (inodedeps_only)
! 465: waitfor = 0;
! 466: else
! 467: waitfor = (ap->a_flags & FSYNC_WAIT) ? UPDATE_WAIT : 0;
! 468: error = ffs_update(vp, NULL, NULL, waitfor);
! 469:
! 470: if (error == 0 && ap->a_flags & FSYNC_CACHE) {
! 471: int i = 0;
! 472: VOP_IOCTL(VTOI(vp)->i_devvp, DIOCCACHESYNC, &i, FWRITE,
! 473: ap->a_l->l_cred, ap->a_l);
! 474: }
! 475:
! 476: return error;
! 477: }
! 478:
! 479: /*
! 480: * Reclaim an inode so that it can be used for other purposes.
! 481: */
! 482: int
! 483: ffs_reclaim(void *v)
! 484: {
! 485: struct vop_reclaim_args /* {
! 486: struct vnode *a_vp;
! 487: struct lwp *a_l;
! 488: } */ *ap = v;
! 489: struct vnode *vp = ap->a_vp;
! 490: struct inode *ip = VTOI(vp);
! 491: struct mount *mp = vp->v_mount;
! 492: struct ufsmount *ump = ip->i_ump;
! 493: int error;
! 494:
! 495: fstrans_start(mp, FSTRANS_LAZY);
! 496: if ((error = ufs_reclaim(vp, ap->a_l)) != 0) {
! 497: fstrans_done(mp);
! 498: return (error);
! 499: }
! 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: }
! 506: /*
! 507: * XXX MFS ends up here, too, to free an inode. Should we create
! 508: * XXX a separate pool for MFS inodes?
! 509: */
! 510: genfs_node_destroy(vp);
! 511: pool_put(&ffs_inode_pool, vp->v_data);
! 512: vp->v_data = NULL;
! 513: fstrans_done(mp);
! 514: return (0);
! 515: }
! 516:
! 517: #if 0
! 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) {
! 546: simple_unlock(&vp->v_interlock);
! 547: }
! 548: return EINVAL;
! 549: }
! 550: return genfs_getpages(v);
! 551: }
! 552: #endif
! 553:
! 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: */
! 558:
! 559: void
! 560: ffs_gop_size(struct vnode *vp, off_t size, off_t *eobp, int flags)
! 561: {
! 562: struct inode *ip = VTOI(vp);
! 563: struct fs *fs = ip->i_fs;
! 564: daddr_t olbn, nlbn;
! 565:
! 566: olbn = lblkno(fs, ip->i_size);
! 567: nlbn = lblkno(fs, size);
! 568: if (nlbn < NDADDR && olbn <= nlbn) {
! 569: *eobp = fragroundup(fs, size);
! 570: } else {
! 571: *eobp = blkroundup(fs, size);
! 572: }
! 573: }
! 574:
! 575: int
! 576: ffs_openextattr(void *v)
! 577: {
! 578: struct vop_openextattr_args /* {
! 579: struct vnode *a_vp;
! 580: kauth_cred_t a_cred;
! 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;
! 600: kauth_cred_t a_cred;
! 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;
! 623: kauth_cred_t a_cred;
! 624: struct proc *a_p;
! 625: } */ *ap = v;
! 626: struct vnode *vp = ap->a_vp;
! 627: struct inode *ip = VTOI(vp);
! 628: struct fs *fs = ip->i_fs;
! 629:
! 630: if (fs->fs_magic == FS_UFS1_MAGIC) {
! 631: #ifdef UFS_EXTATTR
! 632: int error;
! 633:
! 634: fstrans_start(vp->v_mount, FSTRANS_SHARED);
! 635: error = ufs_getextattr(ap);
! 636: fstrans_done(vp->v_mount);
! 637: return error;
! 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;
! 655: kauth_cred_t a_cred;
! 656: struct proc *a_p;
! 657: } */ *ap = v;
! 658: struct vnode *vp = ap->a_vp;
! 659: struct inode *ip = VTOI(vp);
! 660: struct fs *fs = ip->i_fs;
! 661:
! 662: if (fs->fs_magic == FS_UFS1_MAGIC) {
! 663: #ifdef UFS_EXTATTR
! 664: int error;
! 665:
! 666: fstrans_start(vp->v_mount, FSTRANS_SHARED);
! 667: error = ufs_setextattr(ap);
! 668: fstrans_done(vp->v_mount);
! 669: return error;
! 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;
! 687: kauth_cred_t a_cred;
! 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;
! 707: kauth_cred_t a_cred;
! 708: struct proc *a_p;
! 709: } */ *ap = v;
! 710: struct vnode *vp = ap->a_vp;
! 711: struct inode *ip = VTOI(vp);
! 712: struct fs *fs = ip->i_fs;
! 713:
! 714: if (fs->fs_magic == FS_UFS1_MAGIC) {
! 715: #ifdef UFS_EXTATTR
! 716: int error;
! 717:
! 718: fstrans_start(vp->v_mount, FSTRANS_SHARED);
! 719: error = ufs_deleteextattr(ap);
! 720: fstrans_done(vp->v_mount);
! 721: return error;
! 722: #else
! 723: return (EOPNOTSUPP);
! 724: #endif
! 725: }
! 726:
! 727: /* XXX Not implemented for UFS2 file systems. */
! 728: return (EOPNOTSUPP);
! 729: }
CVSweb <webmaster@jp.NetBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to ffs_vnops.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [cvs.NetBSD.org] / src / sys / ufs / ffs