/*
- * Copyright (c) 1989 The Regents of the University of California.
- * All rights reserved.
+ * Copyright (c) 1989, 1991, 1993
+ * The Regents of the University of California. All rights reserved.
*
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by the University of California, Berkeley. The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * %sccs.include.redist.c%
*
- * @(#)lfs_vfsops.c 7.19 (Berkeley) %G%
+ * @(#)lfs_vfsops.c 8.6 (Berkeley) %G%
*/
-#include "param.h"
-#include "systm.h"
-#include "time.h"
-#include "kernel.h"
-#include "namei.h"
-#include "vnode.h"
-#include "mount.h"
-#include "buf.h"
-#include "ucred.h"
-#include "file.h"
-#include "disklabel.h"
-#include "ioctl.h"
-#include "errno.h"
-#include "malloc.h"
-#include "../ufs/fs.h"
-#include "../ufs/ufsmount.h"
-#include "../ufs/inode.h"
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/namei.h>
+#include <sys/proc.h>
+#include <sys/kernel.h>
+#include <sys/vnode.h>
+#include <sys/mount.h>
+#include <sys/buf.h>
+#include <sys/mbuf.h>
+#include <sys/file.h>
+#include <sys/disklabel.h>
+#include <sys/ioctl.h>
+#include <sys/errno.h>
+#include <sys/malloc.h>
+#include <sys/socket.h>
+
+#include <miscfs/specfs/specdev.h>
#include "ioctl.h"
#include "disklabel.h"
#include "stat.h"
-/*
- * ufs vfs operations.
- */
-int ufs_mount();
-int ufs_unmount();
-int ufs_root();
-int ufs_statfs();
-int ufs_sync();
-int ufs_fhtovp();
-int ufs_vptofh();
-
-struct vfsops ufs_vfsops = {
- ufs_mount,
- ufs_unmount,
- ufs_root,
- ufs_statfs,
- ufs_sync,
- ufs_fhtovp,
- ufs_vptofh
+#include <ufs/ufs/quota.h>
+#include <ufs/ufs/inode.h>
+#include <ufs/ufs/ufsmount.h>
+#include <ufs/ufs/ufs_extern.h>
+
+#include <ufs/lfs/lfs.h>
+#include <ufs/lfs/lfs_extern.h>
+
+int lfs_mountfs __P((struct vnode *, struct mount *, struct proc *));
+
+struct vfsops lfs_vfsops = {
+ lfs_mount,
+ ufs_start,
+ lfs_unmount,
+ lfs_root,
+ ufs_quotactl,
+ lfs_statfs,
+ lfs_sync,
+ lfs_vget,
+ lfs_fhtovp,
+ lfs_vptofh,
+ lfs_init,
};
-/*
- * ufs mount table.
- */
-struct ufsmount mounttab[NMOUNT];
-
-/*
- * Called by vfs_mountroot when ufs is going to be mounted as root
- *
- * XXX - Need to have a way of figuring the name of the root device
- */
-#define ROOTNAME "root device"
-
-ufs_mountroot()
+int
+lfs_mountroot()
{
- register struct mount *mp;
- extern struct vnode *rootvp;
- struct ufsmount *ump;
- register struct fs *fs;
- u_int size;
- int error;
-
- mp = (struct mount *)malloc((u_long)sizeof(struct mount),
- M_MOUNT, M_WAITOK);
- mp->m_op = &ufs_vfsops;
- mp->m_flag = 0;
- mp->m_exroot = 0;
- error = mountfs(rootvp, mp);
- if (error) {
- free((caddr_t)mp, M_MOUNT);
- return (error);
- }
- error = vfs_add((struct vnode *)0, mp, 0);
- if (error) {
- (void)ufs_unmount(mp, 0);
- free((caddr_t)mp, M_MOUNT);
- return (error);
- }
- ump = VFSTOUFS(mp);
- fs = ump->um_fs;
- fs->fs_fsmnt[0] = '/';
- bzero(fs->fs_fsmnt + 1, sizeof(fs->fs_fsmnt) - 1);
- (void) copystr(ROOTNAME, ump->um_mntname, MNAMELEN - 1, &size);
- bzero(ump->um_mntname + size, MNAMELEN - size);
- vfs_unlock(mp);
- inittodr(fs->fs_time);
- return (0);
+ panic("lfs_mountroot"); /* XXX -- implement */
}
/*
*
* mount system call
*/
-ufs_mount(mp, path, data, ndp)
- struct mount *mp;
+lfs_mount(mp, path, data, ndp, p)
+ register struct mount *mp;
char *path;
caddr_t data;
struct nameidata *ndp;
+ struct proc *p;
{
struct vnode *devvp;
struct ufs_args args;
struct ufsmount *ump;
- register struct fs *fs;
+ register struct lfs *fs; /* LFS */
u_int size;
int error;
if (error = copyin(data, (caddr_t)&args, sizeof (struct ufs_args)))
return (error);
- if ((error = getmdev(&devvp, args.fspec, ndp)) != 0)
+
+ /* Until LFS can do NFS right. XXX */
+ if (args.export.ex_flags & MNT_EXPORTED)
+ return (EINVAL);
+
+ /*
+ * If updating, check whether changing from read-only to
+ * read/write; if there is no device name, that's all we do.
+ */
+ if (mp->mnt_flag & MNT_UPDATE) {
+ ump = VFSTOUFS(mp);
+#ifdef NOTLFS /* LFS */
+ fs = ump->um_fs;
+ if (fs->fs_ronly && (mp->mnt_flag & MNT_RDONLY) == 0)
+ fs->fs_ronly = 0;
+#else
+ fs = ump->um_lfs;
+ if (fs->lfs_ronly && (mp->mnt_flag & MNT_RDONLY) == 0)
+ fs->lfs_ronly = 0;
+#endif
+ if (args.fspec == 0) {
+ /*
+ * Process export requests.
+ */
+ return (vfs_export(mp, &ump->um_export, &args.export));
+ }
+ }
+ /*
+ * Not an update, or updating the name: look up the name
+ * and verify that it refers to a sensible block device.
+ */
+ NDINIT(ndp, LOOKUP, FOLLOW, UIO_USERSPACE, args.fspec, p);
+ if (error = namei(ndp))
return (error);
- error = mountfs(devvp, mp);
+ devvp = ndp->ni_vp;
+ if (devvp->v_type != VBLK) {
+ vrele(devvp);
+ return (ENOTBLK);
+ }
+ if (major(devvp->v_rdev) >= nblkdev) {
+ vrele(devvp);
+ return (ENXIO);
+ }
+ if ((mp->mnt_flag & MNT_UPDATE) == 0)
+ error = lfs_mountfs(devvp, mp, p); /* LFS */
+ else {
+ if (devvp != ump->um_devvp)
+ error = EINVAL; /* needs translation */
+ else
+ vrele(devvp);
+ }
if (error) {
vrele(devvp);
return (error);
}
ump = VFSTOUFS(mp);
- fs = ump->um_fs;
+ fs = ump->um_lfs; /* LFS */
+#ifdef NOTLFS /* LFS */
(void) copyinstr(path, fs->fs_fsmnt, sizeof(fs->fs_fsmnt) - 1, &size);
bzero(fs->fs_fsmnt + size, sizeof(fs->fs_fsmnt) - size);
- (void) copyinstr(args.fspec, ump->um_mntname, MNAMELEN - 1, &size);
- bzero(ump->um_mntname + size, MNAMELEN - size);
+ bcopy((caddr_t)fs->fs_fsmnt, (caddr_t)mp->mnt_stat.f_mntonname,
+ MNAMELEN);
+ (void) copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1,
+ &size);
+ bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
+ (void) ufs_statfs(mp, &mp->mnt_stat, p);
+#else
+ (void)copyinstr(path, fs->lfs_fsmnt, sizeof(fs->lfs_fsmnt) - 1, &size);
+ bzero(fs->lfs_fsmnt + size, sizeof(fs->lfs_fsmnt) - size);
+ bcopy((caddr_t)fs->lfs_fsmnt, (caddr_t)mp->mnt_stat.f_mntonname,
+ MNAMELEN);
+ (void) copyinstr(args.fspec, mp->mnt_stat.f_mntfromname, MNAMELEN - 1,
+ &size);
+ bzero(mp->mnt_stat.f_mntfromname + size, MNAMELEN - size);
+ (void) lfs_statfs(mp, &mp->mnt_stat, p);
+#endif
return (0);
}
/*
* Common code for mount and mountroot
+ * LFS specific
*/
-mountfs(devvp, mp)
- struct vnode *devvp;
+int
+lfs_mountfs(devvp, mp, p)
+ register struct vnode *devvp;
struct mount *mp;
+ struct proc *p;
{
+ extern struct vnode *rootvp;
+ register struct lfs *fs;
register struct ufsmount *ump;
- struct ufsmount *fmp = NULL;
- struct buf *bp = NULL;
- register struct fs *fs;
- dev_t dev = devvp->v_rdev;
+ struct vnode *vp;
+ struct buf *bp;
struct partinfo dpart;
- int havepart = 0, blks;
- caddr_t base, space;
- int havepart = 0, blks;
- int error, i, size;
- int needclose = 0;
- int ronly = (mp->m_flag & M_RDONLY) != 0;
-
- for (ump = &mounttab[0]; ump < &mounttab[NMOUNT]; ump++) {
- if (ump->um_fs == NULL) {
- if (fmp == NULL)
- fmp = ump;
- } else if (dev == ump->um_dev) {
- return (EBUSY); /* needs translation */
- }
- }
- (*bdevsw[major(dev)].d_open)(dev, ronly ? FREAD : FREAD|FWRITE,
- S_IFBLK);
- if (error) {
- ump->um_fs = NULL;
+ dev_t dev;
+ int error, i, ronly, size;
+
+ if (error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, p))
return (error);
- }
- needclose = 1;
- if (VOP_IOCTL(devvp, DIOCGPART, (caddr_t)&dpart, FREAD, NOCRED) != 0)
+
+ if (VOP_IOCTL(devvp, DIOCGPART, (caddr_t)&dpart, FREAD, NOCRED, p) != 0)
size = DEV_BSIZE;
else {
- havepart = 1;
size = dpart.disklab->d_secsize;
+#ifdef NEVER_USED
+ dpart.part->p_fstype = FS_LFS;
+ dpart.part->p_fsize = fs->lfs_fsize; /* frag size */
+ dpart.part->p_frag = fs->lfs_frag; /* frags per block */
+ dpart.part->p_cpg = fs->lfs_segshift; /* segment shift */
+#endif
}
- if (error = bread(devvp, SBLOCK, SBSIZE, NOCRED, &bp)) {
- ump->um_fs = NULL;
+
+ /* Don't free random space on error. */
+ bp = NULL;
+ ump = NULL;
+
+ /* Read in the superblock. */
+ if (error = bread(devvp, LFS_LABELPAD / size, LFS_SBPAD, NOCRED, &bp))
goto out;
- }
- fs = bp->b_un.b_fs;
- ump->um_fs = NULL;
- error = EINVAL; /* XXX also needs translation */
+ error = EINVAL; /* XXX needs translation */
goto out;
}
- ump->um_fs = (struct fs *)malloc((u_long)fs->fs_sbsize, M_SUPERBLK,
- M_WAITOK);
- bcopy((caddr_t)bp->b_un.b_addr, (caddr_t)ump->um_fs,
- (u_int)fs->fs_sbsize);
+
+ /* Allocate the mount structure, copy the superblock into it. */
+ ump = (struct ufsmount *)malloc(sizeof *ump, M_UFSMNT, M_WAITOK);
+ fs = ump->um_lfs = malloc(sizeof(struct lfs), M_UFSMNT, M_WAITOK);
+ bcopy(bp->b_data, fs, sizeof(struct lfs));
+ if (sizeof(struct lfs) < LFS_SBPAD) /* XXX why? */
+ bp->b_flags |= B_INVAL;
brelse(bp);
bp = NULL;
- fs = ump->um_fs;
- fs->fs_ronly = ronly;
+
+ /* Set up the I/O information */
+ fs->lfs_iocount = 0;
+
+ /* Set up the ifile and lock aflags */
+ fs->lfs_doifile = 0;
+ fs->lfs_writer = 0;
+ fs->lfs_dirops = 0;
+ fs->lfs_seglock = 0;
+
+ /* Set the file system readonly/modify bits. */
+ fs->lfs_ronly = ronly;
if (ronly == 0)
- fs->fs_fmod = 1;
- if (havepart) {
- dpart.part->p_fstype = FS_BSDFFS;
- dpart.part->p_fsize = fs->fs_fsize;
- dpart.part->p_frag = fs->fs_frag;
- dpart.part->p_cpg = fs->fs_cpg;
- }
-#ifdef SECSIZE
- /*
- * If we have a disk label, force per-partition
- * filesystem information to be correct
- * and set correct current fsbtodb shift.
- */
-#endif SECSIZE
- if (havepart) {
- dpart.part->p_fstype = FS_BSDFFS;
- dpart.part->p_fsize = fs->fs_fsize;
- dpart.part->p_frag = fs->fs_frag;
-#ifdef SECSIZE
-#ifdef tahoe
- /*
- * Save the original fsbtodb shift to restore on updates.
- * (Console doesn't understand fsbtodb changes.)
- */
- fs->fs_sparecon[0] = fs->fs_fsbtodb;
-#endif
- i = fs->fs_fsize / size;
- for (fs->fs_fsbtodb = 0; i > 1; i >>= 1)
- fs->fs_fsbtodb++;
-#endif SECSIZE
- fs->fs_dbsize = size;
- }
- blks = howmany(fs->fs_cssize, fs->fs_fsize);
- base = space = (caddr_t)malloc((u_long)fs->fs_cssize, M_SUPERBLK,
- M_WAITOK);
- for (i = 0; i < blks; i += fs->fs_frag) {
- size = fs->fs_bsize;
- if (i + fs->fs_frag > blks)
- size = (blks - i) * fs->fs_fsize;
-#ifdef SECSIZE
- tp = bread(dev, fsbtodb(fs, fs->fs_csaddr + i), size,
- fs->fs_dbsize);
-#else SECSIZE
- error = bread(devvp, fsbtodb(fs, fs->fs_csaddr + i), size,
- NOCRED, &bp);
- if (error) {
- free((caddr_t)base, M_SUPERBLK);
- goto out;
- }
- bcopy((caddr_t)bp->b_un.b_addr, space, (u_int)size);
- fs->fs_csp[fragstoblks(fs, i)] = (struct csum *)space;
- space += size;
- brelse(bp);
- bp = NULL;
- }
- mp->m_data = (qaddr_t)ump;
- mp->m_bsize = fs->fs_bsize;
- mp->m_fsize = fs->fs_fsize;
- mp->m_fsid.val[0] = (long)dev;
- mp->m_fsid.val[1] = MOUNT_UFS;
+ fs->lfs_fmod = 1;
+
+ /* Initialize the mount structure. */
+ dev = devvp->v_rdev;
+ mp->mnt_data = (qaddr_t)ump;
+ mp->mnt_stat.f_fsid.val[0] = (long)dev;
+ mp->mnt_stat.f_fsid.val[1] = MOUNT_LFS;
+ mp->mnt_flag |= MNT_LOCAL;
ump->um_mountp = mp;
ump->um_dev = dev;
ump->um_devvp = devvp;
- ump->um_qinod = NULL;
- devvp->v_mount = mp;
+ ump->um_bptrtodb = 0;
+ ump->um_seqinc = 1 << fs->lfs_fsbtodb;
+ ump->um_nindir = fs->lfs_nindir;
+ for (i = 0; i < MAXQUOTAS; i++)
+ ump->um_quotas[i] = NULLVP;
+ devvp->v_specflags |= SI_MOUNTEDON;
+
+ /*
+ * We use the ifile vnode for almost every operation. Instead of
+ * retrieving it from the hash table each time we retrieve it here,
+ * artificially increment the reference count and keep a pointer
+ * to it in the incore copy of the superblock.
+ */
+ if (error = VFS_VGET(mp, LFS_IFILE_INUM, &vp))
+ goto out;
+ fs->lfs_ivnode = vp;
+ VREF(vp);
+ vput(vp);
- /* Sanity checks for old file systems. XXX */
- fs->fs_npsect = MAX(fs->fs_npsect, fs->fs_nsect); /* XXX */
- fs->fs_interleave = MAX(fs->fs_interleave, 1); /* XXX */
- if (fs->fs_postblformat == FS_42POSTBLFMT) /* XXX */
- fs->fs_nrpos = 8; /* XXX */
return (0);
out:
- if (needclose)
- (void) VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED);
- if (ump->um_fs) {
- free((caddr_t)ump->um_fs, M_SUPERBLK);
- ump->um_fs = NULL;
- }
if (bp)
brelse(bp);
+ (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, NOCRED, p);
+ if (ump) {
+ free(ump->um_lfs, M_UFSMNT);
+ free(ump, M_UFSMNT);
+ mp->mnt_data = (qaddr_t)0;
+ }
return (error);
}
-
/*
* unmount system call
*/
-ufs_unmount(mp, flags)
+lfs_unmount(mp, mntflags, p)
struct mount *mp;
- int flags;
+ int mntflags;
+ struct proc *p;
{
+ extern int doforce;
register struct ufsmount *ump;
- register struct fs *fs;
- dev_t dev;
- int error, ronly;
+ register struct lfs *fs;
+ int i, error, flags, ronly;
+
+ flags = 0;
+ if (mntflags & MNT_FORCE) {
+ if (!doforce || (mp->mnt_flag & MNT_ROOTFS))
+ return (EINVAL);
+ flags |= FORCECLOSE;
+ }
- if (flags & MNT_FORCE)
- return (EINVAL);
ump = VFSTOUFS(mp);
- dev = ump->um_dev;
-#ifdef QUOTA
- if ((error = iflush(dev, mp->m_qinod)) && !forcibly)
-#else
- if ((error = iflush(dev)) && !forcibly)
-#endif
+ fs = ump->um_lfs;
return (error);
#ifdef QUOTA
- (void)closedq(ump);
- /*
- * Here we have to iflush again to get rid of the quota inode.
- * A drag, but it would be ugly to cheat, & this doesn't happen often.
- */
- (void)iflush(dev, (struct inode *)NULL);
+ if (mp->mnt_flag & MNT_QUOTA) {
+ if (error = vflush(mp, fs->lfs_ivnode, SKIPSYSTEM|flags))
+ return (error);
+ for (i = 0; i < MAXQUOTAS; i++) {
+ if (ump->um_quotas[i] == NULLVP)
+ continue;
+ quotaoff(p, mp, i);
+ }
+ /*
+ * Here we fall through to vflush again to ensure
+ * that we have gotten rid of all the system vnodes.
+ */
+ }
#endif
- fs = ump->um_fs;
- ronly = !fs->fs_ronly;
- free((caddr_t)fs->fs_csp[0], M_SUPERBLK);
- error = closei(dev, IFBLK, fs->fs_ronly? FREAD : FREAD|FWRITE);
- irele(ip);
- return (error);
-}
-
-/*
- * Return root of a filesystem
- */
-ufs_root(mp, vpp)
- struct mount *mp;
- struct vnode **vpp;
-{
- struct inode tip, *ip;
- int error;
-
- tip.i_dev = VFSTOUFS(mp)->um_dev;
- tip.i_vnode.v_mount = mp;
- error = iget(&tip, (ino_t)ROOTINO, &ip);
- if (error)
+ if (error = vflush(mp, fs->lfs_ivnode, flags))
return (error);
- *vpp = ITOV(ip);
- return (0);
-}
+ fs->lfs_clean = 1;
+ if (error = VFS_SYNC(mp, 1, p->p_ucred, p))
+ return (error);
+ if (fs->lfs_ivnode->v_dirtyblkhd.lh_first)
+ panic("lfs_unmount: still dirty blocks on ifile vnode\n");
+ vrele(fs->lfs_ivnode);
+ vgone(fs->lfs_ivnode);
-/*
+ ronly = !fs->lfs_ronly;
* Get file system statistics.
*/
-ufs_statfs(mp, sbp)
+lfs_statfs(mp, sbp, p)
struct mount *mp;
register struct statfs *sbp;
+ struct proc *p;
{
+ register struct lfs *fs;
register struct ufsmount *ump;
- register struct fs *fs;
ump = VFSTOUFS(mp);
- fs = ump->um_fs;
- if (fs->fs_magic != FS_MAGIC)
- panic("ufs_statfs");
- sbp->f_type = MOUNT_UFS;
- sbp->f_flags = mp->m_flag &~ (M_MLOCK|M_MWAIT);
- sbp->f_fsize = fs->fs_fsize;
- sbp->f_bsize = fs->fs_bsize;
- sbp->f_blocks = fs->fs_dsize;
- sbp->f_bfree = fs->fs_cstotal.cs_nbfree * fs->fs_frag +
- fs->fs_cstotal.cs_nffree;
- sbp->f_bavail = (fs->fs_dsize * (100 - fs->fs_minfree) / 100) -
- (fs->fs_dsize - sbp->f_bfree);
- if (sbp->f_bavail < 0)
- sbp->f_bavail = 0;
- sbp->f_files = fs->fs_ncg * fs->fs_ipg;
- sbp->f_ffree = fs->fs_cstotal.cs_nifree;
- sbp->f_fsid = mp->m_fsid;
- bcopy((caddr_t)fs->fs_fsmnt, (caddr_t)&sbp->f_mntonname[0], MNAMELEN);
- bcopy((caddr_t)ump->um_mntname, (caddr_t)&sbp->f_mntfromname[0],
- MNAMELEN);
+ fs = ump->um_lfs;
+ if (fs->lfs_magic != LFS_MAGIC)
+ panic("lfs_statfs: magic");
+ sbp->f_type = MOUNT_LFS;
+ sbp->f_bsize = fs->lfs_bsize;
+ sbp->f_iosize = fs->lfs_bsize;
+ sbp->f_blocks = dbtofsb(fs,fs->lfs_dsize);
+ sbp->f_bfree = dbtofsb(fs, fs->lfs_bfree);
+ sbp->f_bavail = (fs->lfs_dsize * (100 - fs->lfs_minfree) / 100) -
+ (fs->lfs_dsize - fs->lfs_bfree);
+ sbp->f_bavail = dbtofsb(fs, sbp->f_bavail);
+ sbp->f_files = fs->lfs_nfiles;
+ sbp->f_ffree = sbp->f_bfree * INOPB(fs);
+ if (sbp != &mp->mnt_stat) {
+ bcopy((caddr_t)mp->mnt_stat.f_mntonname,
+ (caddr_t)&sbp->f_mntonname[0], MNAMELEN);
+ bcopy((caddr_t)mp->mnt_stat.f_mntfromname,
+ (caddr_t)&sbp->f_mntfromname[0], MNAMELEN);
+ }
return (0);
}
-int syncprt = 0;
-
/*
* Go through the disk queues to initiate sandbagged IO;
* go through the inodes to write those that have been modified;
* initiate the writing of the super block if it has been modified.
+ *
+ * Note: we are always called with the filesystem marked `MPBUSY'.
*/
-ufs_sync(mp, waitfor)
+lfs_sync(mp, waitfor, cred, p)
struct mount *mp;
int waitfor;
+ struct ucred *cred;
+ struct proc *p;
+{
+ int error;
+
+ /* All syncs must be checkpoints until roll-forward is implemented. */
+ error = lfs_segwrite(mp, SEGM_CKP | (waitfor ? SEGM_SYNC : 0));
+#ifdef QUOTA
+ qsync(mp);
+#endif
+ return (error);
+}
+
+/*
+ * Look up an LFS dinode number to find its incore vnode. If not already
+ * in core, read it in from the specified device. Return the inode locked.
+ * Detection and handling of mount points must be done by the calling routine.
+ */
+int
+lfs_vget(mp, ino, vpp)
+ struct mount *mp;
+ ino_t ino;
+ struct vnode **vpp;
{
+ register struct lfs *fs;
register struct inode *ip;
- register struct ufsmount *ump = VFSTOUFS(mp);
- register struct fs *fs;
- int error = 0;
- static int updlock = 0;
-
- if (syncprt)
- bufstats();
- if (updlock)
- return (EBUSY);
- fs = ump->um_fs;
- if (fs == (struct fs *)1)
+ struct buf *bp;
+ struct ifile *ifp;
+ struct vnode *vp;
+ struct ufsmount *ump;
+ daddr_t daddr;
+ dev_t dev;
+ int error;
+
+ ump = VFSTOUFS(mp);
+ dev = ump->um_dev;
+ if ((*vpp = ufs_ihashget(dev, ino)) != NULL)
return (0);
- updlock++;
- /*
- * Write back modified superblock.
- * Consistency check that the superblock
- * is still in the buffer cache.
- */
- if (fs->fs_fmod != 0) {
- if (fs->fs_ronly != 0) { /* XXX */
- printf("fs = %s\n", fs->fs_fsmnt);
- panic("update: rofs mod");
- }
- fs->fs_fmod = 0;
- fs->fs_time = time.tv_sec;
- error = sbupdate(ump, waitfor);
+
+ /* Translate the inode number to a disk address. */
+ fs = ump->um_lfs;
+ if (ino == LFS_IFILE_INUM)
+ daddr = fs->lfs_idaddr;
+ else {
+ LFS_IENTRY(ifp, fs, ino, bp);
+ daddr = ifp->if_daddr;
+ brelse(bp);
+ if (daddr == LFS_UNUSED_DADDR)
+ return (ENOENT);
+ }
+
+ /* Allocate new vnode/inode. */
+ if (error = lfs_vcreate(mp, ino, &vp)) {
+ *vpp = NULL;
+ return (error);
}
+
/*
- * Write back each (modified) inode.
+ * Put it onto its hash chain and lock it so that other requests for
+ * this inode will block if they arrive while we are sleeping waiting
+ * for old data structures to be purged or for the contents of the
+ * disk portion of this inode to be read.
*/
- for (ip = inode; ip < inodeNINODE; ip++) {
- if (ip->i_devvp != ump->um_devvp ||
- (ip->i_flag & ILOCKED) != 0 || ITOV(ip)->v_count == 0 ||
- (ip->i_flag & (IMOD|IACC|IUPD|ICHG)) == 0)
- continue;
- ILOCK(ip);
- VREF(ITOV(ip));
- error = iupdat(ip, &time, &time, waitfor == MNT_WAIT);
- iput(ip);
- }
- updlock = 0;
+ ip = VTOI(vp);
+ ufs_ihashins(ip);
+
/*
- * Force stale buffer cache information to be flushed.
+ * XXX
+ * This may not need to be here, logically it should go down with
+ * the i_devvp initialization.
+ * Ask Kirk.
*/
- bflush(ump->um_devvp->v_mount);
- return (error);
-}
+ ip->i_lfs = ump->um_lfs;
-/*
- * Write a superblock and associated information back to disk.
- */
-sbupdate(mp, waitfor)
- struct ufsmount *mp;
- int waitfor;
-{
- register struct fs *fs = mp->um_fs;
- register struct buf *bp;
- int blks;
- caddr_t space;
- int i, size, error = 0;
-
-#ifdef SECSIZE
- bp = getblk(mp->m_dev, (daddr_t)fsbtodb(fs, SBOFF / fs->fs_fsize),
- (int)fs->fs_sbsize, fs->fs_dbsize);
-#else SECSIZE
- bp = getblk(mp->um_devvp, SBLOCK, (int)fs->fs_sbsize);
-#endif SECSIZE
- bcopy((caddr_t)fs, bp->b_un.b_addr, (u_int)fs->fs_sbsize);
- /* Restore compatibility to old file systems. XXX */
- if (fs->fs_postblformat == FS_42POSTBLFMT) /* XXX */
- bp->b_un.b_fs->fs_nrpos = -1; /* XXX */
-#ifdef SECSIZE
-#ifdef tahoe
- /* restore standard fsbtodb shift */
- bp->b_un.b_fs->fs_fsbtodb = fs->fs_sparecon[0];
- bp->b_un.b_fs->fs_sparecon[0] = 0;
-#endif
-#endif SECSIZE
- if (waitfor == MNT_WAIT)
- error = bwrite(bp);
- else
- bawrite(bp);
- blks = howmany(fs->fs_cssize, fs->fs_fsize);
- space = (caddr_t)fs->fs_csp[0];
- for (i = 0; i < blks; i += fs->fs_frag) {
- size = fs->fs_bsize;
- if (i + fs->fs_frag > blks)
- size = (blks - i) * fs->fs_fsize;
-#ifdef SECSIZE
- bp = getblk(mp->m_dev, fsbtodb(fs, fs->fs_csaddr + i), size,
- fs->fs_dbsize);
-#else SECSIZE
- bp = getblk(mp->um_devvp, fsbtodb(fs, fs->fs_csaddr + i), size);
-#endif SECSIZE
- bcopy(space, bp->b_un.b_addr, (u_int)size);
- space += size;
- if (waitfor == MNT_WAIT)
- error = bwrite(bp);
- else
- bawrite(bp);
+ /* Read in the disk contents for the inode, copy into the inode. */
+ if (error =
+ bread(ump->um_devvp, daddr, (int)fs->lfs_bsize, NOCRED, &bp)) {
+ /*
+ * The inode does not contain anything useful, so it would
+ * be misleading to leave it on its hash chain. With mode
+ * still zero, it will be unlinked and returned to the free
+ * list by vput().
+ */
+ vput(vp);
+ brelse(bp);
+ *vpp = NULL;
+ return (error);
}
- return (error);
-}
+ ip->i_din = *lfs_ifind(fs, ino, (struct dinode *)bp->b_data);
+ brelse(bp);
-/*
- * Print out statistics on the current allocation of the buffer pool.
- * Can be enabled to print out on every ``sync'' by setting "syncprt"
- * above.
- */
-bufstats()
-{
- int s, i, j, count;
- register struct buf *bp, *dp;
- int counts[MAXBSIZE/CLBYTES+1];
- static char *bname[BQUEUES] = { "LOCKED", "LRU", "AGE", "EMPTY" };
-
- for (bp = bfreelist, i = 0; bp < &bfreelist[BQUEUES]; bp++, i++) {
- count = 0;
- for (j = 0; j <= MAXBSIZE/CLBYTES; j++)
- counts[j] = 0;
- s = splbio();
- for (dp = bp->av_forw; dp != bp; dp = dp->av_forw) {
- counts[dp->b_bufsize/CLBYTES]++;
- count++;
- }
- splx(s);
- printf("%s: total-%d", bname[i], count);
- for (j = 0; j <= MAXBSIZE/CLBYTES; j++)
- if (counts[j] != 0)
- printf(", %d-%d", j * CLBYTES, counts[j]);
- printf("\n");
+ /*
+ * Initialize the vnode from the inode, check for aliases. In all
+ * cases re-init ip, the underlying vnode/inode may have changed.
+ */
+ if (error = ufs_vinit(mp, lfs_specop_p, LFS_FIFOOPS, &vp)) {
+ vput(vp);
+ *vpp = NULL;
+ return (error);
}
+ /*
+ * Finish inode initialization now that aliasing has been resolved.
+ */
+ ip->i_devvp = ump->um_devvp;
+ VREF(ip->i_devvp);
+ *vpp = vp;
+ return (0);
}
/*
* File handle to vnode
*
* Have to be really careful about stale file handles:
- * - check that the inode number is in range
- * - call iget() to get the locked inode
+ * - check that the inode number is valid
+ * - call lfs_vget() to get the locked inode
* - check for an unallocated inode (i_mode == 0)
- * - check that the generation number matches
+ * - check that the given client host has export rights and return
+ * those rights via. exflagsp and credanonp
+ *
+ * XXX
+ * use ifile to see if inode is allocated instead of reading off disk
+ * what is the relationship between my generational number and the NFS
+ * generational number.
*/
-ufs_fhtovp(mp, fhp, vpp)
+int
+lfs_fhtovp(mp, fhp, nam, vpp, exflagsp, credanonp)
register struct mount *mp;
struct fid *fhp;
+ struct mbuf *nam;
struct vnode **vpp;
+ int *exflagsp;
+ struct ucred **credanonp;
{
register struct ufid *ufhp;
- register struct fs *fs;
- struct inode tip, *ip;
- int error;
ufhp = (struct ufid *)fhp;
- fs = VFSTOUFS(mp)->um_fs;
- if (ufhp->ufid_ino < ROOTINO ||
- ufhp->ufid_ino >= fs->fs_ncg * fs->fs_ipg) {
- *vpp = (struct vnode *)0;
- return (EINVAL);
- }
- tip.i_dev = VFSTOUFS(mp)->um_dev;
- tip.i_vnode.v_mount = mp;
- if (error = iget(&tip, ufhp->ufid_ino, &ip)) {
- *vpp = (struct vnode *)0;
- return (error);
- }
- if (ip->i_mode == 0) {
- iput(ip);
- *vpp = (struct vnode *)0;
- return (EINVAL);
- }
- if (ip->i_gen != ufhp->ufid_gen) {
- iput(ip);
- *vpp = (struct vnode *)0;
- return (EINVAL);
- }
- *vpp = ITOV(ip);
- return (0);
+ if (ufhp->ufid_ino < ROOTINO)
+ return (ESTALE);
+ return (ufs_check_export(mp, ufhp, nam, vpp, exflagsp, credanonp));
}
/*
* Vnode pointer to File handle
*/
/* ARGSUSED */
-ufs_vptofh(vp, fhp)
+lfs_vptofh(vp, fhp)
struct vnode *vp;
struct fid *fhp;
{
- register struct inode *ip = VTOI(vp);
+ register struct inode *ip;
register struct ufid *ufhp;
+ ip = VTOI(vp);
ufhp = (struct ufid *)fhp;
ufhp->ufid_len = sizeof(struct ufid);
ufhp->ufid_ino = ip->i_number;
ufhp->ufid_gen = ip->i_gen;
return (0);
}
-
-/*
- * Common code for mount and quota.
- * Check that the user's argument is a reasonable
- * thing on which to mount, and return the device number if so.
- */
-getmdev(devvpp, fname, ndp)
- struct vnode **devvpp;
- caddr_t fname;
- register struct nameidata *ndp;
-{
- register struct vnode *vp;
- int error;
-
- ndp->ni_nameiop = LOOKUP | LOCKLEAF | FOLLOW;
- ndp->ni_segflg = UIO_USERSPACE;
- ndp->ni_dirp = fname;
- if (error = namei(ndp)) {
- if (error == ENOENT)
- return (ENODEV); /* needs translation */
- return (error);
- }
- vp = ndp->ni_vp;
- if (vp->v_type != VBLK) {
- vput(vp);
- return (ENOTBLK);
- }
- if (major(vp->v_rdev) >= nblkdev)
- return (ENXIO);
- iunlock(VTOI(vp));
- *devvpp = vp;
- return (0);
-}