/* * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * The contents of this file constitute Original Code as defined in and * are subject to the Apple Public Source License Version 1.1 (the * "License"). You may not use this file except in compliance with the * License. Please obtain a copy of the License at * http://www.apple.com/publicsource and read it before using this file. * * This Original Code and all software distributed under the License are * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */ /* * Copyright (c) 1982, 1986, 1989, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)ffs_vnops.c 8.15 (Berkeley) 5/14/95 */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if REV_ENDIAN_FS #include #include #endif /* REV_ENDIAN_FS */ #define VOPFUNC int (*)(void *) /* Global vfs data structures for ufs. */ int (**ffs_vnodeop_p)(void *); struct vnodeopv_entry_desc ffs_vnodeop_entries[] = { { &vop_default_desc, (VOPFUNC)vn_default_error }, { &vop_lookup_desc, (VOPFUNC)ufs_lookup }, /* lookup */ { &vop_create_desc, (VOPFUNC)ufs_create }, /* create */ { &vop_whiteout_desc, (VOPFUNC)ufs_whiteout }, /* whiteout */ { &vop_mknod_desc, (VOPFUNC)ufs_mknod }, /* mknod */ { &vop_open_desc, (VOPFUNC)ufs_open }, /* open */ { &vop_close_desc, (VOPFUNC)ufs_close }, /* close */ { &vop_access_desc, (VOPFUNC)ufs_access }, /* access */ { &vop_getattr_desc, (VOPFUNC)ufs_getattr }, /* getattr */ { &vop_setattr_desc, (VOPFUNC)ufs_setattr }, /* setattr */ { &vop_read_desc, (VOPFUNC)ffs_read }, /* read */ { &vop_write_desc, (VOPFUNC)ffs_write }, /* write */ { &vop_lease_desc, (VOPFUNC)ufs_lease_check }, /* lease */ { &vop_ioctl_desc, (VOPFUNC)ufs_ioctl }, /* ioctl */ { &vop_select_desc, (VOPFUNC)ufs_select }, /* select */ { &vop_revoke_desc, (VOPFUNC)ufs_revoke }, /* revoke */ { &vop_mmap_desc, (VOPFUNC)ufs_mmap }, /* mmap */ { &vop_fsync_desc, (VOPFUNC)ffs_fsync }, /* fsync */ { &vop_seek_desc, (VOPFUNC)ufs_seek }, /* seek */ { &vop_remove_desc, (VOPFUNC)ufs_remove }, /* remove */ { &vop_link_desc, (VOPFUNC)ufs_link }, /* link */ { &vop_rename_desc, (VOPFUNC)ufs_rename }, /* rename */ { &vop_mkdir_desc, (VOPFUNC)ufs_mkdir }, /* mkdir */ { &vop_rmdir_desc, (VOPFUNC)ufs_rmdir }, /* rmdir */ { &vop_symlink_desc, (VOPFUNC)ufs_symlink }, /* symlink */ { &vop_readdir_desc, (VOPFUNC)ufs_readdir }, /* readdir */ { &vop_readlink_desc, (VOPFUNC)ufs_readlink }, /* readlink */ { &vop_abortop_desc, (VOPFUNC)nop_abortop }, /* abortop */ { &vop_inactive_desc, (VOPFUNC)ufs_inactive }, /* inactive */ { &vop_reclaim_desc, (VOPFUNC)ffs_reclaim }, /* reclaim */ { &vop_lock_desc, (VOPFUNC)ufs_lock }, /* lock */ { &vop_unlock_desc, (VOPFUNC)ufs_unlock }, /* unlock */ { &vop_bmap_desc, (VOPFUNC)ufs_bmap }, /* bmap */ { &vop_strategy_desc, (VOPFUNC)ufs_strategy }, /* strategy */ { &vop_print_desc, (VOPFUNC)ufs_print }, /* print */ { &vop_islocked_desc, (VOPFUNC)ufs_islocked }, /* islocked */ { &vop_pathconf_desc, (VOPFUNC)ufs_pathconf }, /* pathconf */ { &vop_advlock_desc, (VOPFUNC)ufs_advlock }, /* advlock */ { &vop_blkatoff_desc, (VOPFUNC)ffs_blkatoff }, /* blkatoff */ { &vop_valloc_desc, (VOPFUNC)ffs_valloc }, /* valloc */ { &vop_reallocblks_desc, (VOPFUNC)ffs_reallocblks }, /* reallocblks */ { &vop_vfree_desc, (VOPFUNC)ffs_vfree }, /* vfree */ { &vop_truncate_desc, (VOPFUNC)ffs_truncate }, /* truncate */ { &vop_update_desc, (VOPFUNC)ffs_update }, /* update */ { &vop_bwrite_desc, (VOPFUNC)vn_bwrite }, { &vop_pagein_desc, (VOPFUNC)ffs_pagein }, /* Pagein */ { &vop_pageout_desc, (VOPFUNC)ffs_pageout }, /* Pageout */ { &vop_copyfile_desc, (VOPFUNC)err_copyfile }, /* Copy File */ { &vop_blktooff_desc, (VOPFUNC)ffs_blktooff }, /* blktooff */ { &vop_offtoblk_desc, (VOPFUNC)ffs_offtoblk }, /* offtoblk */ { &vop_cmap_desc, (VOPFUNC)ufs_cmap }, /* cmap */ { &vop_getattrlist_desc, (VOPFUNC)ufs_getattrlist }, /* getattrlist */ { &vop_setattrlist_desc, (VOPFUNC)ufs_setattrlist }, /* setattrlist */ { &vop_kqfilt_add_desc, (VOPFUNC)ufs_kqfilt_add }, /* kqfilt_add */ { (struct vnodeop_desc*)NULL, (int(*)())NULL } }; struct vnodeopv_desc ffs_vnodeop_opv_desc = { &ffs_vnodeop_p, ffs_vnodeop_entries }; int (**ffs_specop_p)(void *); struct vnodeopv_entry_desc ffs_specop_entries[] = { { &vop_default_desc, (VOPFUNC)vn_default_error }, { &vop_lookup_desc, (VOPFUNC)spec_lookup }, /* lookup */ { &vop_create_desc, (VOPFUNC)spec_create }, /* create */ { &vop_mknod_desc, (VOPFUNC)spec_mknod }, /* mknod */ { &vop_open_desc, (VOPFUNC)spec_open }, /* open */ { &vop_close_desc, (VOPFUNC)ufsspec_close }, /* close */ { &vop_access_desc, (VOPFUNC)ufs_access }, /* access */ { &vop_getattr_desc, (VOPFUNC)ufs_getattr }, /* getattr */ { &vop_setattr_desc, (VOPFUNC)ufs_setattr }, /* setattr */ { &vop_read_desc, (VOPFUNC)ufsspec_read }, /* read */ { &vop_write_desc, (VOPFUNC)ufsspec_write }, /* write */ { &vop_lease_desc, (VOPFUNC)spec_lease_check }, /* lease */ { &vop_ioctl_desc, (VOPFUNC)spec_ioctl }, /* ioctl */ { &vop_select_desc, (VOPFUNC)spec_select }, /* select */ { &vop_revoke_desc, (VOPFUNC)spec_revoke }, /* revoke */ { &vop_mmap_desc, (VOPFUNC)spec_mmap }, /* mmap */ { &vop_fsync_desc, (VOPFUNC)ffs_fsync }, /* fsync */ { &vop_seek_desc, (VOPFUNC)spec_seek }, /* seek */ { &vop_remove_desc, (VOPFUNC)spec_remove }, /* remove */ { &vop_link_desc, (VOPFUNC)spec_link }, /* link */ { &vop_rename_desc, (VOPFUNC)spec_rename }, /* rename */ { &vop_mkdir_desc, (VOPFUNC)spec_mkdir }, /* mkdir */ { &vop_rmdir_desc, (VOPFUNC)spec_rmdir }, /* rmdir */ { &vop_symlink_desc, (VOPFUNC)spec_symlink }, /* symlink */ { &vop_readdir_desc, (VOPFUNC)spec_readdir }, /* readdir */ { &vop_readlink_desc, (VOPFUNC)spec_readlink }, /* readlink */ { &vop_abortop_desc, (VOPFUNC)spec_abortop }, /* abortop */ { &vop_inactive_desc, (VOPFUNC)ufs_inactive }, /* inactive */ { &vop_reclaim_desc, (VOPFUNC)ffs_reclaim }, /* reclaim */ { &vop_lock_desc, (VOPFUNC)ufs_lock }, /* lock */ { &vop_unlock_desc, (VOPFUNC)ufs_unlock }, /* unlock */ { &vop_bmap_desc, (VOPFUNC)spec_bmap }, /* bmap */ { &vop_strategy_desc, (VOPFUNC)spec_strategy }, /* strategy */ { &vop_print_desc, (VOPFUNC)ufs_print }, /* print */ { &vop_islocked_desc, (VOPFUNC)ufs_islocked }, /* islocked */ { &vop_pathconf_desc, (VOPFUNC)spec_pathconf }, /* pathconf */ { &vop_advlock_desc, (VOPFUNC)spec_advlock }, /* advlock */ { &vop_blkatoff_desc, (VOPFUNC)spec_blkatoff }, /* blkatoff */ { &vop_valloc_desc, (VOPFUNC)spec_valloc }, /* valloc */ { &vop_reallocblks_desc, (VOPFUNC)spec_reallocblks }, /* reallocblks */ { &vop_vfree_desc, (VOPFUNC)ffs_vfree }, /* vfree */ { &vop_truncate_desc, (VOPFUNC)spec_truncate }, /* truncate */ { &vop_update_desc, (VOPFUNC)ffs_update }, /* update */ { &vop_bwrite_desc, (VOPFUNC)vn_bwrite }, { &vop_devblocksize_desc, (VOPFUNC)spec_devblocksize }, /* devblocksize */ { &vop_pagein_desc, (VOPFUNC)ffs_pagein }, /* Pagein */ { &vop_pageout_desc, (VOPFUNC)ffs_pageout }, /* Pageout */ { &vop_copyfile_desc, (VOPFUNC)err_copyfile }, /* Copy File */ { &vop_blktooff_desc, (VOPFUNC)ffs_blktooff }, /* blktooff */ { &vop_offtoblk_desc, (VOPFUNC)ffs_offtoblk }, /* offtoblk */ { &vop_cmap_desc, (VOPFUNC)spec_cmap }, /* cmap */ { (struct vnodeop_desc*)NULL, (int(*)())NULL } }; struct vnodeopv_desc ffs_specop_opv_desc = { &ffs_specop_p, ffs_specop_entries }; #if FIFO int (**ffs_fifoop_p)(void *); struct vnodeopv_entry_desc ffs_fifoop_entries[] = { { &vop_default_desc, (VOPFUNC)vn_default_error }, { &vop_lookup_desc, (VOPFUNC)fifo_lookup }, /* lookup */ { &vop_create_desc, (VOPFUNC)fifo_create }, /* create */ { &vop_mknod_desc, (VOPFUNC)fifo_mknod }, /* mknod */ { &vop_open_desc, (VOPFUNC)fifo_open }, /* open */ { &vop_close_desc, (VOPFUNC)ufsfifo_close }, /* close */ { &vop_access_desc, (VOPFUNC)ufs_access }, /* access */ { &vop_getattr_desc, (VOPFUNC)ufs_getattr }, /* getattr */ { &vop_setattr_desc, (VOPFUNC)ufs_setattr }, /* setattr */ { &vop_read_desc, (VOPFUNC)ufsfifo_read }, /* read */ { &vop_write_desc, (VOPFUNC)ufsfifo_write }, /* write */ { &vop_lease_desc, (VOPFUNC)fifo_lease_check }, /* lease */ { &vop_ioctl_desc, (VOPFUNC)fifo_ioctl }, /* ioctl */ { &vop_select_desc, (VOPFUNC)fifo_select }, /* select */ { &vop_revoke_desc, (VOPFUNC)fifo_revoke }, /* revoke */ { &vop_mmap_desc, (VOPFUNC)fifo_mmap }, /* mmap */ { &vop_fsync_desc, (VOPFUNC)ffs_fsync }, /* fsync */ { &vop_seek_desc, (VOPFUNC)fifo_seek }, /* seek */ { &vop_remove_desc, (VOPFUNC)fifo_remove }, /* remove */ { &vop_link_desc, (VOPFUNC)fifo_link }, /* link */ { &vop_rename_desc, (VOPFUNC)fifo_rename }, /* rename */ { &vop_mkdir_desc, (VOPFUNC)fifo_mkdir }, /* mkdir */ { &vop_rmdir_desc, (VOPFUNC)fifo_rmdir }, /* rmdir */ { &vop_symlink_desc, (VOPFUNC)fifo_symlink }, /* symlink */ { &vop_readdir_desc, (VOPFUNC)fifo_readdir }, /* readdir */ { &vop_readlink_desc, (VOPFUNC)fifo_readlink }, /* readlink */ { &vop_abortop_desc, (VOPFUNC)fifo_abortop }, /* abortop */ { &vop_inactive_desc, (VOPFUNC)ufs_inactive }, /* inactive */ { &vop_reclaim_desc, (VOPFUNC)ffs_reclaim }, /* reclaim */ { &vop_lock_desc, (VOPFUNC)ufs_lock }, /* lock */ { &vop_unlock_desc, (VOPFUNC)ufs_unlock }, /* unlock */ { &vop_bmap_desc, (VOPFUNC)fifo_bmap }, /* bmap */ { &vop_strategy_desc, (VOPFUNC)fifo_strategy }, /* strategy */ { &vop_print_desc, (VOPFUNC)ufs_print }, /* print */ { &vop_islocked_desc, (VOPFUNC)ufs_islocked }, /* islocked */ { &vop_pathconf_desc, (VOPFUNC)fifo_pathconf }, /* pathconf */ { &vop_advlock_desc, (VOPFUNC)fifo_advlock }, /* advlock */ { &vop_blkatoff_desc, (VOPFUNC)fifo_blkatoff }, /* blkatoff */ { &vop_valloc_desc, (VOPFUNC)fifo_valloc }, /* valloc */ { &vop_reallocblks_desc, (VOPFUNC)fifo_reallocblks }, /* reallocblks */ { &vop_vfree_desc, (VOPFUNC)ffs_vfree }, /* vfree */ { &vop_truncate_desc, (VOPFUNC)fifo_truncate }, /* truncate */ { &vop_update_desc, (VOPFUNC)ffs_update }, /* update */ { &vop_bwrite_desc, (VOPFUNC)vn_bwrite }, { &vop_pagein_desc, (VOPFUNC)ffs_pagein }, /* Pagein */ { &vop_pageout_desc, (VOPFUNC)ffs_pageout }, /* Pageout */ { &vop_copyfile_desc, (VOPFUNC)err_copyfile }, /* Copy File */ { &vop_blktooff_desc, (VOPFUNC)ffs_blktooff }, /* blktooff */ { &vop_offtoblk_desc, (VOPFUNC)ffs_offtoblk }, /* offtoblk */ { &vop_cmap_desc, (VOPFUNC)ufs_cmap }, /* cmap */ { &vop_kqfilt_add_desc, (VOPFUNC)ufsfifo_kqfilt_add }, /* kqfilt_add */ { (struct vnodeop_desc*)NULL, (int(*)())NULL } }; struct vnodeopv_desc ffs_fifoop_opv_desc = { &ffs_fifoop_p, ffs_fifoop_entries }; #endif /* FIFO */ /* * Enabling cluster read/write operations. */ int doclusterread = 0; int doclusterwrite = 0; #include /* * Synch an open file. */ /* ARGSUSED */ int ffs_fsync(ap) struct vop_fsync_args /* { struct vnode *a_vp; struct ucred *a_cred; int a_waitfor; struct proc *a_p; } */ *ap; { register struct vnode *vp = ap->a_vp; register struct buf *bp; struct timeval tv; struct buf *nbp; int s; struct inode *ip = VTOI(vp); int retry = 0; /* * Write out any clusters. */ cluster_push(vp); /* * Flush all dirty buffers associated with a vnode. */ loop: s = splbio(); for (bp = vp->v_dirtyblkhd.lh_first; bp; bp = nbp) { nbp = bp->b_vnbufs.le_next; if ((bp->b_flags & B_BUSY)) continue; if ((bp->b_flags & B_DELWRI) == 0) panic("ffs_fsync: not dirty"); bremfree(bp); bp->b_flags |= B_BUSY; splx(s); /* * Wait for I/O associated with indirect blocks to complete, * since there is no way to quickly wait for them below. */ if (bp->b_vp == vp || ap->a_waitfor == MNT_NOWAIT) (void) bawrite(bp); else (void) bwrite(bp); goto loop; } if (ap->a_waitfor == MNT_WAIT) { while (vp->v_numoutput) { vp->v_flag |= VBWAIT; tsleep((caddr_t)&vp->v_numoutput, PRIBIO + 1, "ffs_fsync", 0); } if (vp->v_dirtyblkhd.lh_first) { /* still have some dirty buffers */ if (retry++ > 10) { vprint("ffs_fsync: dirty", vp); splx(s); /* * Looks like the requests are not * getting queued to the driver. * Retrying here causes a cpu bound loop. * Yield to the other threads and hope * for the best. */ (void)tsleep((caddr_t)&vp->v_numoutput, PRIBIO + 1, "ffs_fsync", hz/10); retry = 0; } else { splx(s); } /* try again */ goto loop; } } splx(s); tv = time; return (VOP_UPDATE(ap->a_vp, &tv, &tv, ap->a_waitfor == MNT_WAIT)); } /* * Reclaim an inode so that it can be used for other purposes. */ int ffs_reclaim(ap) struct vop_reclaim_args /* { struct vnode *a_vp; struct proc *a_p; } */ *ap; { register struct vnode *vp = ap->a_vp; int error; if (error = ufs_reclaim(vp, ap->a_p)) return (error); FREE_ZONE(vp->v_data, sizeof (struct inode), VFSTOUFS(vp->v_mount)->um_devvp->v_tag == VT_MFS ? M_MFSNODE : M_FFSNODE); vp->v_data = NULL; return (0); } /* Blktooff converts a logical block number to a file offset */ int ffs_blktooff(ap) struct vop_blktooff_args /* { struct vnode *a_vp; daddr_t a_lblkno; off_t *a_offset; } */ *ap; { register struct inode *ip; register FS *fs; ufs_daddr_t bn; if (ap->a_vp == NULL) return (EINVAL); ip = VTOI(ap->a_vp); fs = ip->I_FS; bn = ap->a_lblkno; if ((long)bn < 0) { panic("-ve blkno in ffs_blktooff"); bn = -(long)bn; } *ap->a_offset = (off_t)lblktosize(fs, bn); return (0); } /* Blktooff converts a logical block number to a file offset */ int ffs_offtoblk(ap) struct vop_offtoblk_args /* { struct vnode *a_vp; off_t a_offset; daddr_t *a_lblkno; } */ *ap; { register struct inode *ip; register FS *fs; if (ap->a_vp == NULL) return (EINVAL); ip = VTOI(ap->a_vp); fs = ip->I_FS; *ap->a_lblkno = (daddr_t)lblkno(fs, ap->a_offset); return (0); }