/* * Copyright (c) 1991, 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. * * @(#)ufs_inode.c 8.1 (Berkeley) 6/11/93 */ #include <sys/param.h> #include <sys/systm.h> #include <sys/proc.h> #include <sys/vnode.h> #include <sys/mount.h> #include <sys/kernel.h> #include <sys/malloc.h> #include <ufs/ufs/quota.h> #include <ufs/ufs/inode.h> #include <ufs/ufs/ufsmount.h> #include <ufs/ufs/ufs_extern.h> u_long nextgennumber; /* Next generation number to assign. */ int prtactive = 0; /* 1 => print out reclaim of active vnodes */ int ufs_init() { static int first = 1; if (!first) return (0); first = 0; #ifdef DIAGNOSTIC if ((sizeof(struct inode) - 1) & sizeof(struct inode)) printf("ufs_init: bad size %d\n", sizeof(struct inode)); #endif ufs_ihashinit(); dqinit(); return (0); } /* * Last reference to an inode, write the inode out and if necessary, * truncate and deallocate the file. */ int ufs_inactive(ap) struct vop_inactive_args /* { struct vnode *a_vp; } */ *ap; { register struct vnode *vp = ap->a_vp; register struct inode *ip = VTOI(vp); struct timeval tv; int mode, error; extern int prtactive; if (prtactive && vp->v_usecount != 0) vprint("ffs_inactive: pushing active", vp); /* Get rid of inodes related to stale file handles. */ if (ip->i_mode == 0) { if ((vp->v_flag & VXLOCK) == 0) vgone(vp); return (0); } error = 0; #ifdef DIAGNOSTIC if (VOP_ISLOCKED(vp)) panic("ffs_inactive: locked inode"); if (curproc) ip->i_lockholder = curproc->p_pid; else ip->i_lockholder = -1; #endif ip->i_flag |= ILOCKED; if (ip->i_nlink <= 0 && (vp->v_mount->mnt_flag & MNT_RDONLY) == 0) { #ifdef QUOTA if (!getinoquota(ip)) (void)chkiq(ip, -1, NOCRED, 0); #endif error = VOP_TRUNCATE(vp, (off_t)0, 0, NOCRED, NULL); mode = ip->i_mode; ip->i_mode = 0; ip->i_rdev = 0; ip->i_flag |= IUPD|ICHG; VOP_VFREE(vp, ip->i_number, mode); } if (ip->i_flag&(IUPD|IACC|ICHG|IMOD)) { tv = time; VOP_UPDATE(vp, &tv, &tv, 0); } VOP_UNLOCK(vp); /* * If we are done with the inode, reclaim it * so that it can be reused immediately. */ if (vp->v_usecount == 0 && ip->i_mode == 0) vgone(vp); return (error); } /* * Reclaim an inode so that it can be used for other purposes. */ int ufs_reclaim(ap) struct vop_reclaim_args /* { struct vnode *a_vp; } */ *ap; { register struct vnode *vp = ap->a_vp; register struct inode *ip; int i, type; if (prtactive && vp->v_usecount != 0) vprint("ufs_reclaim: pushing active", vp); /* * Remove the inode from its hash chain. */ ip = VTOI(vp); ufs_ihashrem(ip); /* * Purge old data structures associated with the inode. */ cache_purge(vp); if (ip->i_devvp) { vrele(ip->i_devvp); ip->i_devvp = 0; } #ifdef QUOTA for (i = 0; i < MAXQUOTAS; i++) { if (ip->i_dquot[i] != NODQUOT) { dqrele(vp, ip->i_dquot[i]); ip->i_dquot[i] = NODQUOT; } } #endif switch (vp->v_mount->mnt_stat.f_type) { case MOUNT_UFS: type = M_FFSNODE; break; case MOUNT_MFS: type = M_MFSNODE; break; case MOUNT_LFS: type = M_LFSNODE; break; default: panic("ufs_reclaim: not ufs file"); } FREE(vp->v_data, type); vp->v_data = NULL; return (0); }