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1.1 ! root 1: /* ! 2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. ! 3: * ! 4: * @APPLE_LICENSE_HEADER_START@ ! 5: * ! 6: * The contents of this file constitute Original Code as defined in and ! 7: * are subject to the Apple Public Source License Version 1.1 (the ! 8: * "License"). You may not use this file except in compliance with the ! 9: * License. Please obtain a copy of the License at ! 10: * http://www.apple.com/publicsource and read it before using this file. ! 11: * ! 12: * This Original Code and all software distributed under the License are ! 13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER ! 14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, ! 15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, ! 16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the ! 17: * License for the specific language governing rights and limitations ! 18: * under the License. ! 19: * ! 20: * @APPLE_LICENSE_HEADER_END@ ! 21: */ ! 22: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ ! 23: /* ! 24: * Copyright (c) 1982, 1986, 1989, 1993 ! 25: * The Regents of the University of California. All rights reserved. ! 26: * ! 27: * Redistribution and use in source and binary forms, with or without ! 28: * modification, are permitted provided that the following conditions ! 29: * are met: ! 30: * 1. Redistributions of source code must retain the above copyright ! 31: * notice, this list of conditions and the following disclaimer. ! 32: * 2. Redistributions in binary form must reproduce the above copyright ! 33: * notice, this list of conditions and the following disclaimer in the ! 34: * documentation and/or other materials provided with the distribution. ! 35: * 3. All advertising materials mentioning features or use of this software ! 36: * must display the following acknowledgement: ! 37: * This product includes software developed by the University of ! 38: * California, Berkeley and its contributors. ! 39: * 4. Neither the name of the University nor the names of its contributors ! 40: * may be used to endorse or promote products derived from this software ! 41: * without specific prior written permission. ! 42: * ! 43: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ! 44: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE ! 45: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ! 46: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE ! 47: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL ! 48: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS ! 49: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ! 50: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT ! 51: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY ! 52: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF ! 53: * SUCH DAMAGE. ! 54: * ! 55: * @(#)ffs_vnops.c 8.15 (Berkeley) 5/14/95 ! 56: */ ! 57: ! 58: #include <rev_endian_fs.h> ! 59: #include <sys/param.h> ! 60: #include <sys/systm.h> ! 61: #include <sys/resourcevar.h> ! 62: #include <sys/kernel.h> ! 63: #include <sys/file.h> ! 64: #include <sys/stat.h> ! 65: #include <sys/buf.h> ! 66: #include <sys/proc.h> ! 67: #include <sys/conf.h> ! 68: #include <sys/mount.h> ! 69: #include <sys/vnode.h> ! 70: #include <sys/malloc.h> ! 71: ! 72: #include <sys/vm.h> ! 73: #include <vfs/vfs_support.h> ! 74: ! 75: #include <miscfs/specfs/specdev.h> ! 76: #include <miscfs/fifofs/fifo.h> ! 77: ! 78: #include <ufs/ufs/lockf.h> ! 79: #include <ufs/ufs/quota.h> ! 80: #include <ufs/ufs/inode.h> ! 81: #include <ufs/ufs/dir.h> ! 82: #include <ufs/ufs/ufsmount.h> ! 83: #include <ufs/ufs/ufs_extern.h> ! 84: ! 85: #include <ufs/ffs/fs.h> ! 86: #include <ufs/ffs/ffs_extern.h> ! 87: #if REV_ENDIAN_FS ! 88: #include <ufs/ufs/ufs_byte_order.h> ! 89: #include <architecture/byte_order.h> ! 90: #endif /* REV_ENDIAN_FS */ ! 91: ! 92: /* Global vfs data structures for ufs. */ ! 93: int (**ffs_vnodeop_p)(); ! 94: struct vnodeopv_entry_desc ffs_vnodeop_entries[] = { ! 95: { &vop_default_desc, vn_default_error }, ! 96: { &vop_lookup_desc, ufs_lookup }, /* lookup */ ! 97: { &vop_create_desc, ufs_create }, /* create */ ! 98: { &vop_whiteout_desc, ufs_whiteout }, /* whiteout */ ! 99: { &vop_mknod_desc, ufs_mknod }, /* mknod */ ! 100: { &vop_open_desc, ufs_open }, /* open */ ! 101: { &vop_close_desc, ufs_close }, /* close */ ! 102: { &vop_access_desc, ufs_access }, /* access */ ! 103: { &vop_getattr_desc, ufs_getattr }, /* getattr */ ! 104: { &vop_setattr_desc, ufs_setattr }, /* setattr */ ! 105: { &vop_read_desc, ffs_read }, /* read */ ! 106: { &vop_write_desc, ffs_write }, /* write */ ! 107: { &vop_lease_desc, ufs_lease_check }, /* lease */ ! 108: { &vop_ioctl_desc, ufs_ioctl }, /* ioctl */ ! 109: { &vop_select_desc, ufs_select }, /* select */ ! 110: { &vop_revoke_desc, ufs_revoke }, /* revoke */ ! 111: { &vop_mmap_desc, ufs_mmap }, /* mmap */ ! 112: { &vop_fsync_desc, ffs_fsync }, /* fsync */ ! 113: { &vop_seek_desc, ufs_seek }, /* seek */ ! 114: { &vop_remove_desc, ufs_remove }, /* remove */ ! 115: { &vop_link_desc, ufs_link }, /* link */ ! 116: { &vop_rename_desc, ufs_rename }, /* rename */ ! 117: { &vop_mkdir_desc, ufs_mkdir }, /* mkdir */ ! 118: { &vop_rmdir_desc, ufs_rmdir }, /* rmdir */ ! 119: { &vop_symlink_desc, ufs_symlink }, /* symlink */ ! 120: { &vop_readdir_desc, ufs_readdir }, /* readdir */ ! 121: { &vop_readlink_desc, ufs_readlink }, /* readlink */ ! 122: { &vop_abortop_desc, ufs_abortop }, /* abortop */ ! 123: { &vop_inactive_desc, ufs_inactive }, /* inactive */ ! 124: { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ ! 125: { &vop_lock_desc, ufs_lock }, /* lock */ ! 126: { &vop_unlock_desc, ufs_unlock }, /* unlock */ ! 127: { &vop_bmap_desc, ufs_bmap }, /* bmap */ ! 128: { &vop_strategy_desc, ufs_strategy }, /* strategy */ ! 129: { &vop_print_desc, ufs_print }, /* print */ ! 130: { &vop_islocked_desc, ufs_islocked }, /* islocked */ ! 131: { &vop_pathconf_desc, ufs_pathconf }, /* pathconf */ ! 132: { &vop_advlock_desc, ufs_advlock }, /* advlock */ ! 133: { &vop_blkatoff_desc, ffs_blkatoff }, /* blkatoff */ ! 134: { &vop_valloc_desc, ffs_valloc }, /* valloc */ ! 135: { &vop_reallocblks_desc, ffs_reallocblks }, /* reallocblks */ ! 136: { &vop_vfree_desc, ffs_vfree }, /* vfree */ ! 137: { &vop_truncate_desc, ffs_truncate }, /* truncate */ ! 138: { &vop_update_desc, ffs_update }, /* update */ ! 139: { &vop_bwrite_desc, vn_bwrite }, ! 140: { &vop_pagein_desc, ufs_pagein }, /* Pagein */ ! 141: { &vop_pageout_desc, ufs_pageout }, /* Pageout */ ! 142: { &vop_copyfile_desc, err_copyfile }, /* Copy File */ ! 143: { (struct vnodeop_desc*)NULL, (int(*)())NULL } ! 144: }; ! 145: struct vnodeopv_desc ffs_vnodeop_opv_desc = ! 146: { &ffs_vnodeop_p, ffs_vnodeop_entries }; ! 147: ! 148: int (**ffs_specop_p)(); ! 149: struct vnodeopv_entry_desc ffs_specop_entries[] = { ! 150: { &vop_default_desc, vn_default_error }, ! 151: { &vop_lookup_desc, spec_lookup }, /* lookup */ ! 152: { &vop_create_desc, spec_create }, /* create */ ! 153: { &vop_mknod_desc, spec_mknod }, /* mknod */ ! 154: { &vop_open_desc, spec_open }, /* open */ ! 155: { &vop_close_desc, ufsspec_close }, /* close */ ! 156: { &vop_access_desc, ufs_access }, /* access */ ! 157: { &vop_getattr_desc, ufs_getattr }, /* getattr */ ! 158: { &vop_setattr_desc, ufs_setattr }, /* setattr */ ! 159: { &vop_read_desc, ufsspec_read }, /* read */ ! 160: { &vop_write_desc, ufsspec_write }, /* write */ ! 161: { &vop_lease_desc, spec_lease_check }, /* lease */ ! 162: { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ ! 163: { &vop_select_desc, spec_select }, /* select */ ! 164: { &vop_revoke_desc, spec_revoke }, /* revoke */ ! 165: { &vop_mmap_desc, spec_mmap }, /* mmap */ ! 166: { &vop_fsync_desc, ffs_fsync }, /* fsync */ ! 167: { &vop_seek_desc, spec_seek }, /* seek */ ! 168: { &vop_remove_desc, spec_remove }, /* remove */ ! 169: { &vop_link_desc, spec_link }, /* link */ ! 170: { &vop_rename_desc, spec_rename }, /* rename */ ! 171: { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ ! 172: { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ ! 173: { &vop_symlink_desc, spec_symlink }, /* symlink */ ! 174: { &vop_readdir_desc, spec_readdir }, /* readdir */ ! 175: { &vop_readlink_desc, spec_readlink }, /* readlink */ ! 176: { &vop_abortop_desc, spec_abortop }, /* abortop */ ! 177: { &vop_inactive_desc, ufs_inactive }, /* inactive */ ! 178: { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ ! 179: { &vop_lock_desc, ufs_lock }, /* lock */ ! 180: { &vop_unlock_desc, ufs_unlock }, /* unlock */ ! 181: { &vop_bmap_desc, spec_bmap }, /* bmap */ ! 182: { &vop_strategy_desc, spec_strategy }, /* strategy */ ! 183: { &vop_print_desc, ufs_print }, /* print */ ! 184: { &vop_islocked_desc, ufs_islocked }, /* islocked */ ! 185: { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ ! 186: { &vop_advlock_desc, spec_advlock }, /* advlock */ ! 187: { &vop_blkatoff_desc, spec_blkatoff }, /* blkatoff */ ! 188: { &vop_valloc_desc, spec_valloc }, /* valloc */ ! 189: { &vop_reallocblks_desc, spec_reallocblks }, /* reallocblks */ ! 190: { &vop_vfree_desc, ffs_vfree }, /* vfree */ ! 191: { &vop_truncate_desc, spec_truncate }, /* truncate */ ! 192: { &vop_update_desc, ffs_update }, /* update */ ! 193: { &vop_bwrite_desc, vn_bwrite }, ! 194: #ifdef NeXT ! 195: { &vop_devblocksize_desc, spec_devblocksize }, /* devblocksize */ ! 196: #endif /* NeXT */ ! 197: { &vop_pagein_desc, ufs_pagein }, /* Pagein */ ! 198: { &vop_pageout_desc, ufs_pageout }, /* Pageout */ ! 199: { &vop_copyfile_desc, err_copyfile }, /* Copy File */ ! 200: { (struct vnodeop_desc*)NULL, (int(*)())NULL } ! 201: }; ! 202: struct vnodeopv_desc ffs_specop_opv_desc = ! 203: { &ffs_specop_p, ffs_specop_entries }; ! 204: ! 205: #if FIFO ! 206: int (**ffs_fifoop_p)(); ! 207: struct vnodeopv_entry_desc ffs_fifoop_entries[] = { ! 208: { &vop_default_desc, vn_default_error }, ! 209: { &vop_lookup_desc, fifo_lookup }, /* lookup */ ! 210: { &vop_create_desc, fifo_create }, /* create */ ! 211: { &vop_mknod_desc, fifo_mknod }, /* mknod */ ! 212: { &vop_open_desc, fifo_open }, /* open */ ! 213: { &vop_close_desc, ufsfifo_close }, /* close */ ! 214: { &vop_access_desc, ufs_access }, /* access */ ! 215: { &vop_getattr_desc, ufs_getattr }, /* getattr */ ! 216: { &vop_setattr_desc, ufs_setattr }, /* setattr */ ! 217: { &vop_read_desc, ufsfifo_read }, /* read */ ! 218: { &vop_write_desc, ufsfifo_write }, /* write */ ! 219: { &vop_lease_desc, fifo_lease_check }, /* lease */ ! 220: { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ ! 221: { &vop_select_desc, fifo_select }, /* select */ ! 222: { &vop_revoke_desc, fifo_revoke }, /* revoke */ ! 223: { &vop_mmap_desc, fifo_mmap }, /* mmap */ ! 224: { &vop_fsync_desc, ffs_fsync }, /* fsync */ ! 225: { &vop_seek_desc, fifo_seek }, /* seek */ ! 226: { &vop_remove_desc, fifo_remove }, /* remove */ ! 227: { &vop_link_desc, fifo_link }, /* link */ ! 228: { &vop_rename_desc, fifo_rename }, /* rename */ ! 229: { &vop_mkdir_desc, fifo_mkdir }, /* mkdir */ ! 230: { &vop_rmdir_desc, fifo_rmdir }, /* rmdir */ ! 231: { &vop_symlink_desc, fifo_symlink }, /* symlink */ ! 232: { &vop_readdir_desc, fifo_readdir }, /* readdir */ ! 233: { &vop_readlink_desc, fifo_readlink }, /* readlink */ ! 234: { &vop_abortop_desc, fifo_abortop }, /* abortop */ ! 235: { &vop_inactive_desc, ufs_inactive }, /* inactive */ ! 236: { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ ! 237: { &vop_lock_desc, ufs_lock }, /* lock */ ! 238: { &vop_unlock_desc, ufs_unlock }, /* unlock */ ! 239: { &vop_bmap_desc, fifo_bmap }, /* bmap */ ! 240: { &vop_strategy_desc, fifo_strategy }, /* strategy */ ! 241: { &vop_print_desc, ufs_print }, /* print */ ! 242: { &vop_islocked_desc, ufs_islocked }, /* islocked */ ! 243: { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ ! 244: { &vop_advlock_desc, fifo_advlock }, /* advlock */ ! 245: { &vop_blkatoff_desc, fifo_blkatoff }, /* blkatoff */ ! 246: { &vop_valloc_desc, fifo_valloc }, /* valloc */ ! 247: { &vop_reallocblks_desc, fifo_reallocblks }, /* reallocblks */ ! 248: { &vop_vfree_desc, ffs_vfree }, /* vfree */ ! 249: { &vop_truncate_desc, fifo_truncate }, /* truncate */ ! 250: { &vop_update_desc, ffs_update }, /* update */ ! 251: { &vop_bwrite_desc, vn_bwrite }, ! 252: { &vop_pagein_desc, ufs_pagein }, /* Pagein */ ! 253: { &vop_pageout_desc, ufs_pageout }, /* Pageout */ ! 254: { &vop_copyfile_desc, err_copyfile }, /* Copy File */ ! 255: { (struct vnodeop_desc*)NULL, (int(*)())NULL } ! 256: }; ! 257: struct vnodeopv_desc ffs_fifoop_opv_desc = ! 258: { &ffs_fifoop_p, ffs_fifoop_entries }; ! 259: #endif /* FIFO */ ! 260: ! 261: /* ! 262: * Enabling cluster read/write operations. ! 263: */ ! 264: int doclusterread = 1; ! 265: int doclusterwrite = 1; ! 266: ! 267: #include <ufs/ufs/ufs_readwrite.c> ! 268: ! 269: /* ! 270: * Synch an open file. ! 271: */ ! 272: /* ARGSUSED */ ! 273: int ! 274: ffs_fsync(ap) ! 275: struct vop_fsync_args /* { ! 276: struct vnode *a_vp; ! 277: struct ucred *a_cred; ! 278: int a_waitfor; ! 279: struct proc *a_p; ! 280: } */ *ap; ! 281: { ! 282: register struct vnode *vp = ap->a_vp; ! 283: register struct buf *bp; ! 284: struct timeval tv; ! 285: struct buf *nbp; ! 286: int s; ! 287: ! 288: /* ! 289: * Write out any clusters. ! 290: */ ! 291: if (doclusterwrite) { ! 292: struct inode *ip = VTOI(vp); ! 293: int devBlockSize = 0; ! 294: ! 295: VOP_DEVBLOCKSIZE(ip->i_devvp, &devBlockSize); ! 296: cluster_close(vp, ip->i_fs->fs_bsize, devBlockSize); ! 297: } ! 298: ! 299: /* ! 300: * Flush all dirty buffers associated with a vnode. ! 301: */ ! 302: loop: ! 303: s = splbio(); ! 304: for (bp = vp->v_dirtyblkhd.lh_first; bp; bp = nbp) { ! 305: nbp = bp->b_vnbufs.le_next; ! 306: if ((bp->b_flags & B_BUSY)) ! 307: continue; ! 308: if ((bp->b_flags & B_DELWRI) == 0) ! 309: panic("ffs_fsync: not dirty"); ! 310: bremfree(bp); ! 311: bp->b_flags |= B_BUSY; ! 312: splx(s); ! 313: /* ! 314: * Wait for I/O associated with indirect blocks to complete, ! 315: * since there is no way to quickly wait for them below. ! 316: */ ! 317: if (bp->b_vp == vp || ap->a_waitfor == MNT_NOWAIT) ! 318: (void) bawrite(bp); ! 319: else ! 320: (void) bwrite(bp); ! 321: goto loop; ! 322: } ! 323: if (ap->a_waitfor == MNT_WAIT) { ! 324: while (vp->v_numoutput) { ! 325: vp->v_flag |= VBWAIT; ! 326: tsleep((caddr_t)&vp->v_numoutput, PRIBIO + 1, "ffs_fsync", 0); ! 327: } ! 328: ! 329: /* I have seen this happen for swapfile. So it is safer to ! 330: * check for dirty buffers again. --Umesh ! 331: */ ! 332: if (vp->v_dirtyblkhd.lh_first) { ! 333: vprint("ffs_fsync: dirty", vp); ! 334: splx(s); ! 335: goto loop; ! 336: } ! 337: } ! 338: splx(s); ! 339: tv = time; ! 340: return (VOP_UPDATE(ap->a_vp, &tv, &tv, ap->a_waitfor == MNT_WAIT)); ! 341: } ! 342: ! 343: /* ! 344: * Reclaim an inode so that it can be used for other purposes. ! 345: */ ! 346: int ! 347: ffs_reclaim(ap) ! 348: struct vop_reclaim_args /* { ! 349: struct vnode *a_vp; ! 350: struct proc *a_p; ! 351: } */ *ap; ! 352: { ! 353: register struct vnode *vp = ap->a_vp; ! 354: int error; ! 355: ! 356: if (error = ufs_reclaim(vp, ap->a_p)) ! 357: return (error); ! 358: FREE_ZONE(vp->v_data, sizeof (struct inode), ! 359: VFSTOUFS(vp->v_mount)->um_devvp->v_tag == VT_MFS ? ! 360: M_MFSNODE : M_FFSNODE); ! 361: vp->v_data = NULL; ! 362: return (0); ! 363: }
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