![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to ffs_vnops.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Apple Darwin 0.x] / kernel / bsd / ufs / ffs|
Return to ffs_vnops.c CVS log | Up to [Apple Darwin 0.x] / kernel / bsd / ufs / ffs |
1.1 ! root 1: /* ! 2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. ! 3: * ! 4: * @APPLE_LICENSE_HEADER_START@ ! 5: * ! 6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights ! 7: * Reserved. This file contains Original Code and/or Modifications of ! 8: * Original Code as defined in and that are subject to the Apple Public ! 9: * Source License Version 1.1 (the "License"). You may not use this file ! 10: * except in compliance with the License. Please obtain a copy of the ! 11: * License at http://www.apple.com/publicsource and read it before using ! 12: * this file. ! 13: * ! 14: * The Original Code and all software distributed under the License are ! 15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER ! 16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, ! 17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, ! 18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the ! 19: * License for the specific language governing rights and limitations ! 20: * under the License. ! 21: * ! 22: * @APPLE_LICENSE_HEADER_END@ ! 23: */ ! 24: ! 25: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ ! 26: /* ! 27: * Copyright (c) 1982, 1986, 1989, 1993 ! 28: * The Regents of the University of California. All rights reserved. ! 29: * ! 30: * Redistribution and use in source and binary forms, with or without ! 31: * modification, are permitted provided that the following conditions ! 32: * are met: ! 33: * 1. Redistributions of source code must retain the above copyright ! 34: * notice, this list of conditions and the following disclaimer. ! 35: * 2. Redistributions in binary form must reproduce the above copyright ! 36: * notice, this list of conditions and the following disclaimer in the ! 37: * documentation and/or other materials provided with the distribution. ! 38: * 3. All advertising materials mentioning features or use of this software ! 39: * must display the following acknowledgement: ! 40: * This product includes software developed by the University of ! 41: * California, Berkeley and its contributors. ! 42: * 4. Neither the name of the University nor the names of its contributors ! 43: * may be used to endorse or promote products derived from this software ! 44: * without specific prior written permission. ! 45: * ! 46: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ! 47: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE ! 48: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ! 49: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE ! 50: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL ! 51: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS ! 52: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ! 53: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT ! 54: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY ! 55: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF ! 56: * SUCH DAMAGE. ! 57: * ! 58: * @(#)ffs_vnops.c 8.15 (Berkeley) 5/14/95 ! 59: */ ! 60: ! 61: #include <rev_endian_fs.h> ! 62: #include <sys/param.h> ! 63: #include <sys/systm.h> ! 64: #include <sys/resourcevar.h> ! 65: #include <sys/kernel.h> ! 66: #include <sys/file.h> ! 67: #include <sys/stat.h> ! 68: #include <sys/buf.h> ! 69: #include <sys/proc.h> ! 70: #include <sys/conf.h> ! 71: #include <sys/mount.h> ! 72: #include <sys/vnode.h> ! 73: #include <sys/malloc.h> ! 74: ! 75: #include <sys/vm.h> ! 76: ! 77: #include <miscfs/specfs/specdev.h> ! 78: #include <miscfs/fifofs/fifo.h> ! 79: ! 80: #include <ufs/ufs/lockf.h> ! 81: #include <ufs/ufs/quota.h> ! 82: #include <ufs/ufs/inode.h> ! 83: #include <ufs/ufs/dir.h> ! 84: #include <ufs/ufs/ufsmount.h> ! 85: #include <ufs/ufs/ufs_extern.h> ! 86: ! 87: #include <ufs/ffs/fs.h> ! 88: #include <ufs/ffs/ffs_extern.h> ! 89: #if REV_ENDIAN_FS ! 90: #include <ufs/ufs/ufs_byte_order.h> ! 91: #include <architecture/byte_order.h> ! 92: #endif /* REV_ENDIAN_FS */ ! 93: ! 94: /* Global vfs data structures for ufs. */ ! 95: int (**ffs_vnodeop_p)(); ! 96: struct vnodeopv_entry_desc ffs_vnodeop_entries[] = { ! 97: { &vop_default_desc, vn_default_error }, ! 98: { &vop_lookup_desc, ufs_lookup }, /* lookup */ ! 99: { &vop_create_desc, ufs_create }, /* create */ ! 100: { &vop_whiteout_desc, ufs_whiteout }, /* whiteout */ ! 101: { &vop_mknod_desc, ufs_mknod }, /* mknod */ ! 102: { &vop_open_desc, ufs_open }, /* open */ ! 103: { &vop_close_desc, ufs_close }, /* close */ ! 104: { &vop_access_desc, ufs_access }, /* access */ ! 105: { &vop_getattr_desc, ufs_getattr }, /* getattr */ ! 106: { &vop_setattr_desc, ufs_setattr }, /* setattr */ ! 107: { &vop_read_desc, ffs_read }, /* read */ ! 108: { &vop_write_desc, ffs_write }, /* write */ ! 109: { &vop_lease_desc, ufs_lease_check }, /* lease */ ! 110: { &vop_ioctl_desc, ufs_ioctl }, /* ioctl */ ! 111: { &vop_select_desc, ufs_select }, /* select */ ! 112: { &vop_revoke_desc, ufs_revoke }, /* revoke */ ! 113: { &vop_mmap_desc, ufs_mmap }, /* mmap */ ! 114: { &vop_fsync_desc, ffs_fsync }, /* fsync */ ! 115: { &vop_seek_desc, ufs_seek }, /* seek */ ! 116: { &vop_remove_desc, ufs_remove }, /* remove */ ! 117: { &vop_link_desc, ufs_link }, /* link */ ! 118: { &vop_rename_desc, ufs_rename }, /* rename */ ! 119: { &vop_mkdir_desc, ufs_mkdir }, /* mkdir */ ! 120: { &vop_rmdir_desc, ufs_rmdir }, /* rmdir */ ! 121: { &vop_symlink_desc, ufs_symlink }, /* symlink */ ! 122: { &vop_readdir_desc, ufs_readdir }, /* readdir */ ! 123: { &vop_readlink_desc, ufs_readlink }, /* readlink */ ! 124: { &vop_abortop_desc, ufs_abortop }, /* abortop */ ! 125: { &vop_inactive_desc, ufs_inactive }, /* inactive */ ! 126: { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ ! 127: { &vop_lock_desc, ufs_lock }, /* lock */ ! 128: { &vop_unlock_desc, ufs_unlock }, /* unlock */ ! 129: { &vop_bmap_desc, ufs_bmap }, /* bmap */ ! 130: { &vop_strategy_desc, ufs_strategy }, /* strategy */ ! 131: { &vop_print_desc, ufs_print }, /* print */ ! 132: { &vop_islocked_desc, ufs_islocked }, /* islocked */ ! 133: { &vop_pathconf_desc, ufs_pathconf }, /* pathconf */ ! 134: { &vop_advlock_desc, ufs_advlock }, /* advlock */ ! 135: { &vop_blkatoff_desc, ffs_blkatoff }, /* blkatoff */ ! 136: { &vop_valloc_desc, ffs_valloc }, /* valloc */ ! 137: { &vop_reallocblks_desc, ffs_reallocblks }, /* reallocblks */ ! 138: { &vop_vfree_desc, ffs_vfree }, /* vfree */ ! 139: { &vop_truncate_desc, ffs_truncate }, /* truncate */ ! 140: { &vop_update_desc, ffs_update }, /* update */ ! 141: { &vop_bwrite_desc, vn_bwrite }, ! 142: { &vop_pagein_desc, ufs_pagein }, /* Pagein */ ! 143: { &vop_pageout_desc, ufs_pageout }, /* Pageout */ ! 144: { (struct vnodeop_desc*)NULL, (int(*)())NULL } ! 145: }; ! 146: struct vnodeopv_desc ffs_vnodeop_opv_desc = ! 147: { &ffs_vnodeop_p, ffs_vnodeop_entries }; ! 148: ! 149: int (**ffs_specop_p)(); ! 150: struct vnodeopv_entry_desc ffs_specop_entries[] = { ! 151: { &vop_default_desc, vn_default_error }, ! 152: { &vop_lookup_desc, spec_lookup }, /* lookup */ ! 153: { &vop_create_desc, spec_create }, /* create */ ! 154: { &vop_mknod_desc, spec_mknod }, /* mknod */ ! 155: { &vop_open_desc, spec_open }, /* open */ ! 156: { &vop_close_desc, ufsspec_close }, /* close */ ! 157: { &vop_access_desc, ufs_access }, /* access */ ! 158: { &vop_getattr_desc, ufs_getattr }, /* getattr */ ! 159: { &vop_setattr_desc, ufs_setattr }, /* setattr */ ! 160: { &vop_read_desc, ufsspec_read }, /* read */ ! 161: { &vop_write_desc, ufsspec_write }, /* write */ ! 162: { &vop_lease_desc, spec_lease_check }, /* lease */ ! 163: { &vop_ioctl_desc, spec_ioctl }, /* ioctl */ ! 164: { &vop_select_desc, spec_select }, /* select */ ! 165: { &vop_revoke_desc, spec_revoke }, /* revoke */ ! 166: { &vop_mmap_desc, spec_mmap }, /* mmap */ ! 167: { &vop_fsync_desc, ffs_fsync }, /* fsync */ ! 168: { &vop_seek_desc, spec_seek }, /* seek */ ! 169: { &vop_remove_desc, spec_remove }, /* remove */ ! 170: { &vop_link_desc, spec_link }, /* link */ ! 171: { &vop_rename_desc, spec_rename }, /* rename */ ! 172: { &vop_mkdir_desc, spec_mkdir }, /* mkdir */ ! 173: { &vop_rmdir_desc, spec_rmdir }, /* rmdir */ ! 174: { &vop_symlink_desc, spec_symlink }, /* symlink */ ! 175: { &vop_readdir_desc, spec_readdir }, /* readdir */ ! 176: { &vop_readlink_desc, spec_readlink }, /* readlink */ ! 177: { &vop_abortop_desc, spec_abortop }, /* abortop */ ! 178: { &vop_inactive_desc, ufs_inactive }, /* inactive */ ! 179: { &vop_reclaim_desc, ffs_reclaim }, /* reclaim */ ! 180: { &vop_lock_desc, ufs_lock }, /* lock */ ! 181: { &vop_unlock_desc, ufs_unlock }, /* unlock */ ! 182: { &vop_bmap_desc, spec_bmap }, /* bmap */ ! 183: { &vop_strategy_desc, spec_strategy }, /* strategy */ ! 184: { &vop_print_desc, ufs_print }, /* print */ ! 185: { &vop_islocked_desc, ufs_islocked }, /* islocked */ ! 186: { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ ! 187: { &vop_advlock_desc, spec_advlock }, /* advlock */ ! 188: { &vop_blkatoff_desc, spec_blkatoff }, /* blkatoff */ ! 189: { &vop_valloc_desc, spec_valloc }, /* valloc */ ! 190: { &vop_reallocblks_desc, spec_reallocblks }, /* reallocblks */ ! 191: { &vop_vfree_desc, ffs_vfree }, /* vfree */ ! 192: { &vop_truncate_desc, spec_truncate }, /* truncate */ ! 193: { &vop_update_desc, ffs_update }, /* update */ ! 194: { &vop_bwrite_desc, vn_bwrite }, ! 195: #ifdef NeXT ! 196: { &vop_devblocksize_desc, spec_devblocksize }, /* devblocksize */ ! 197: #endif /* NeXT */ ! 198: { &vop_pagein_desc, ufs_pagein }, /* Pagein */ ! 199: { &vop_pageout_desc, ufs_pageout }, /* Pageout */ ! 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: { (struct vnodeop_desc*)NULL, (int(*)())NULL } ! 255: }; ! 256: struct vnodeopv_desc ffs_fifoop_opv_desc = ! 257: { &ffs_fifoop_p, ffs_fifoop_entries }; ! 258: #endif /* FIFO */ ! 259: ! 260: /* ! 261: * Enabling cluster read/write operations. ! 262: */ ! 263: int doclusterread = 1; ! 264: int doclusterwrite = 1; ! 265: ! 266: #include <ufs/ufs/ufs_readwrite.c> ! 267: ! 268: /* ! 269: * Synch an open file. ! 270: */ ! 271: /* ARGSUSED */ ! 272: int ! 273: ffs_fsync(ap) ! 274: struct vop_fsync_args /* { ! 275: struct vnode *a_vp; ! 276: struct ucred *a_cred; ! 277: int a_waitfor; ! 278: struct proc *a_p; ! 279: } */ *ap; ! 280: { ! 281: register struct vnode *vp = ap->a_vp; ! 282: register struct buf *bp; ! 283: struct timeval tv; ! 284: struct buf *nbp; ! 285: int s; ! 286: ! 287: /* ! 288: * Flush all dirty buffers associated with a vnode. ! 289: */ ! 290: loop: ! 291: s = splbio(); ! 292: for (bp = vp->v_dirtyblkhd.lh_first; bp; bp = nbp) { ! 293: nbp = bp->b_vnbufs.le_next; ! 294: if ((bp->b_flags & B_BUSY)) ! 295: continue; ! 296: if ((bp->b_flags & B_DELWRI) == 0) ! 297: panic("ffs_fsync: not dirty"); ! 298: bremfree(bp); ! 299: bp->b_flags |= B_BUSY; ! 300: splx(s); ! 301: /* ! 302: * Wait for I/O associated with indirect blocks to complete, ! 303: * since there is no way to quickly wait for them below. ! 304: */ ! 305: if (bp->b_vp == vp || ap->a_waitfor == MNT_NOWAIT) ! 306: (void) bawrite(bp); ! 307: else ! 308: (void) bwrite(bp); ! 309: goto loop; ! 310: } ! 311: if (ap->a_waitfor == MNT_WAIT) { ! 312: while (vp->v_numoutput) { ! 313: vp->v_flag |= VBWAIT; ! 314: tsleep((caddr_t)&vp->v_numoutput, PRIBIO + 1, "ffs_fsync", 0); ! 315: } ! 316: ! 317: /* I have seen this happen for swapfile. So it is safer to ! 318: * check for dirty buffers again. --Umesh ! 319: */ ! 320: if (vp->v_dirtyblkhd.lh_first) { ! 321: vprint("ffs_fsync: dirty", vp); ! 322: splx(s); ! 323: goto loop; ! 324: } ! 325: } ! 326: splx(s); ! 327: tv = time; ! 328: return (VOP_UPDATE(ap->a_vp, &tv, &tv, ap->a_waitfor == MNT_WAIT)); ! 329: } ! 330: ! 331: /* ! 332: * Reclaim an inode so that it can be used for other purposes. ! 333: */ ! 334: int ! 335: ffs_reclaim(ap) ! 336: struct vop_reclaim_args /* { ! 337: struct vnode *a_vp; ! 338: struct proc *a_p; ! 339: } */ *ap; ! 340: { ! 341: register struct vnode *vp = ap->a_vp; ! 342: int error; ! 343: ! 344: if (error = ufs_reclaim(vp, ap->a_p)) ! 345: return (error); ! 346: FREE_ZONE(vp->v_data, sizeof (struct inode), ! 347: VFSTOUFS(vp->v_mount)->um_devvp->v_tag == VT_MFS ? ! 348: M_MFSNODE : M_FFSNODE); ! 349: vp->v_data = NULL; ! 350: return (0); ! 351: }
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.