daddr_t => ufs_daddr_t

[unix-history] / usr / src / sys / ufs / lfs / lfs_vfsops.c

diff --git a/usr/src/sys/ufs/lfs/lfs_vfsops.c b/usr/src/sys/ufs/lfs/lfs_vfsops.c
index 1c90c84..fbd9ea2 100644 (file)
--- a/usr/src/sys/ufs/lfs/lfs_vfsops.c
+++ b/usr/src/sys/ufs/lfs/lfs_vfsops.c
@@ -1,118 +1,61 @@
 /*
 /*

- * Copyright (c) 1989 The Regents of the University of California.
- * All rights reserved.
+ * Copyright (c) 1989, 1991, 1993, 1994
+ *     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        7.28 (Berkeley) %G%
+ *     @(#)lfs_vfsops.c        8.11 (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"
 
 #include "ioctl.h"
 #include "disklabel.h"
 #include "stat.h"
 

-/*
- * ufs vfs operations.
- */
-int ufs_mount();
-int ufs_start();
-int ufs_unmount();
-int ufs_root();
-int ufs_statfs();
-int ufs_sync();
-int ufs_fhtovp();
-int ufs_vptofh();
-int ufs_init();
-
-struct vfsops ufs_vfsops = {
-       ufs_mount,
+#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,
        ufs_start,

-       ufs_unmount,
+       lfs_unmount,

        ufs_root,
        ufs_root,

-       ufs_statfs,
-       ufs_sync,
-       ufs_fhtovp,
-       ufs_vptofh,
-       ufs_init
+       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.
- *
- * Name is updated by mount(8) after booting.
- */
-#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;
-       mp->m_mounth = (struct vnode *)0;
-       error = mountfs(rootvp, mp);
-       if (error) {
-               free((caddr_t)mp, M_MOUNT);
-               return (error);
-       }
-       if (error = vfs_lock(mp)) {
-               (void)ufs_unmount(mp, 0);
-               free((caddr_t)mp, M_MOUNT);
-               return (error);
-       }
-       rootfs = mp;
-       mp->m_next = mp;
-       mp->m_prev = mp;
-       mp->m_vnodecovered = (struct vnode *)0;
-       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 */

 }
 
 /*
 }
 
 /*


@@ -120,539 +63,485 @@ ufs_mountroot()
  *
  * mount system call
  */
  *
  * 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;
        char *path;
        caddr_t data;
        struct nameidata *ndp;

+       struct proc *p;

 {
        struct vnode *devvp;
        struct ufs_args args;
        struct ufsmount *ump;
 {
        struct vnode *devvp;
        struct ufs_args args;
        struct ufsmount *ump;

-       register struct fs *fs;
+       register struct lfs *fs;                                /* LFS */

        u_int size;
        int error;
        u_int size;
        int error;

+       mode_t accessmode;

 
        if (error = copyin(data, (caddr_t)&args, sizeof (struct ufs_args)))
                return (error);
 
        if (error = copyin(data, (caddr_t)&args, sizeof (struct ufs_args)))
                return (error);

-       if ((error = getmdev(&devvp, args.fspec, ndp)) != 0)
-               return (error);
-       if ((mp->m_flag & M_UPDATE) == 0) {
-               error = mountfs(devvp, mp);
-       } else {
+
+       /* 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);
                ump = VFSTOUFS(mp);

-               fs = ump->um_fs;
-               if (fs->fs_ronly && (mp->m_flag & M_RDONLY) == 0)
-                       fs->fs_ronly = 0;
-               /*
-                * Verify that the specified device is the one that
-                * is really being used for the root file system.
-                */
+               if (fs->lfs_ronly && (mp->mnt_flag & MNT_WANTRDWR)) {
+                       /*
+                        * If upgrade to read-write by non-root, then verify
+                        * that user has necessary permissions on the device.
+                        */
+                       if (p->p_ucred->cr_uid != 0) {
+                               VOP_LOCK(ump->um_devvp);
+                               if (error = VOP_ACCESS(ump->um_devvp,
+                                   VREAD | VWRITE, p->p_ucred, p)) {
+                                       VOP_UNLOCK(ump->um_devvp);
+                                       return (error);
+                               }
+                               VOP_UNLOCK(ump->um_devvp);
+                       }
+                       fs->lfs_ronly = 0;
+               }
+               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);
+       devvp = ndp->ni_vp;
+       if (devvp->v_type != VBLK) {
+               vrele(devvp);
+               return (ENOTBLK);
+       }
+       if (major(devvp->v_rdev) >= nblkdev) {
+               vrele(devvp);
+               return (ENXIO);
+       }
+       /*
+        * If mount by non-root, then verify that user has necessary
+        * permissions on the device.
+        */
+       if (p->p_ucred->cr_uid != 0) {
+               accessmode = VREAD;
+               if ((mp->mnt_flag & MNT_RDONLY) == 0)
+                       accessmode |= VWRITE;
+               VOP_LOCK(devvp);
+               if (error = VOP_ACCESS(devvp, accessmode, p->p_ucred, p)) {
+                       vput(devvp);
+                       return (error);
+               }
+               VOP_UNLOCK(devvp);
+       }
+       if ((mp->mnt_flag & MNT_UPDATE) == 0)
+               error = lfs_mountfs(devvp, mp, p);              /* LFS */
+       else {

                if (devvp != ump->um_devvp)
                        error = EINVAL; /* needs translation */
                if (devvp != ump->um_devvp)
                        error = EINVAL; /* needs translation */

+               else
+                       vrele(devvp);

        }
        if (error) {
                vrele(devvp);
                return (error);
        }
        ump = VFSTOUFS(mp);
        }
        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(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
        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 mount *mp;

+       struct proc *p;

 {
 {

+       extern struct vnode *rootvp;
+       register struct lfs *fs;

        register struct ufsmount *ump;
        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;
        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;
+       struct ucred *cred;
+
+       cred = p ? p->p_ucred : NOCRED;
+       if (error = VOP_OPEN(devvp, ronly ? FREAD : FREAD|FWRITE, FSCRED, p))

                return (error);
                return (error);

-       }
-       needclose = 1;
-       if (VOP_IOCTL(devvp, DIOCGPART, (caddr_t)&dpart, FREAD, NOCRED) != 0)
+
+       if (VOP_IOCTL(devvp, DIOCGPART, (caddr_t)&dpart, FREAD, cred, p) != 0)

                size = DEV_BSIZE;
        else {
                size = DEV_BSIZE;
        else {

-               havepart = 1;

                size = dpart.disklab->d_secsize;
                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, cred, &bp))

                goto out;
                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;
        }
                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;
        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)
        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_maxsymlinklen = fs->lfs_maxsymlinklen;
+       mp->mnt_flag |= MNT_LOCAL;

        ump->um_mountp = mp;
        ump->um_dev = dev;
        ump->um_devvp = devvp;
        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:
 
        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);
        if (bp)
                brelse(bp);

+       (void)VOP_CLOSE(devvp, ronly ? FREAD : FREAD|FWRITE, cred, p);
+       if (ump) {
+               free(ump->um_lfs, M_UFSMNT);
+               free(ump, M_UFSMNT);
+               mp->mnt_data = (qaddr_t)0;
+       }

        return (error);
 }
 
        return (error);
 }
 

-/*
- * Make a filesystem operational.
- * Nothing to do at the moment.
- */
-/* ARGSUSED */
-ufs_start(mp, flags)
-       struct mount *mp;
-       int flags;
-{
-
-       return (0);
-}
-

 /*
  * unmount system call
  */
 /*
  * unmount system call
  */

-ufs_unmount(mp, flags)
+lfs_unmount(mp, mntflags, p)

        struct mount *mp;
        struct mount *mp;

-       int flags;
+       int mntflags;
+       struct proc *p;

 {
 {

+       extern int doforce;

        register struct ufsmount *ump;
        register struct ufsmount *ump;

-       register struct fs *fs;
-       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);
        ump = VFSTOUFS(mp);

-       if (error = vflush(mp, ITOV(ump->um_qinod), flags))
+       fs = ump->um_lfs;

                return (error);
 #ifdef QUOTA
                return (error);
 #ifdef QUOTA

-       (void) closedq(ump);
-       /*
-        * A drag, but it would be ugly to cheat, & this doesn't happen often.
-        */
-       if (vflush(mp, (struct vnode *)NULL, MNT_NOFORCE))
-               panic("ufs_unmount: quota");
+       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
 #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;
-{
-       register struct inode *ip;
-       struct inode *nip;
-       struct vnode tvp;
-       int error;
-
-       tvp.v_mount = mp;
-       ip = VTOI(&tvp);
-       ip->i_vnode = &tvp;
-       ip->i_dev = VFSTOUFS(mp)->um_dev;
-       error = iget(ip, (ino_t)ROOTINO, &nip);
-       if (error)
+       if (error = vflush(mp, fs->lfs_ivnode, flags))

                return (error);
                return (error);

-       *vpp = ITOV(nip);
-       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.
  */
  * Get file system statistics.
  */

-ufs_statfs(mp, sbp)
+lfs_statfs(mp, sbp, p)

        struct mount *mp;
        register struct statfs *sbp;
        struct mount *mp;
        register struct statfs *sbp;

+       struct proc *p;

 {
 {

+       register struct lfs *fs;

        register struct ufsmount *ump;
        register struct ufsmount *ump;

-       register struct fs *fs;

 
        ump = VFSTOUFS(mp);
 
        ump = VFSTOUFS(mp);

-       fs = ump->um_fs;
-       if (fs->fs_magic != FS_MAGIC)
-               panic("ufs_statfs");
-       sbp->f_type = MOUNT_UFS;
-       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);
-       sbp->f_files =  fs->fs_ncg * fs->fs_ipg - ROOTINO;
-       sbp->f_ffree = fs->fs_cstotal.cs_nifree;
-       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);
 }
 
        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.
 /*
  * 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 mount *mp;
        int waitfor;

+       struct ucred *cred;
+       struct proc *p;

 {
 {

-       register struct vnode *vp;
+       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 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;
+       ufs_daddr_t daddr;
+       dev_t dev;
+       int error;
+
+       ump = VFSTOUFS(mp);
+       dev = ump->um_dev;
+       if ((*vpp = ufs_ihashget(dev, ino)) != NULL)

                return (0);
                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 (vp = mp->m_mounth; vp; vp = vp->v_mountf) {
-               ip = VTOI(vp);
-               if ((ip->i_flag & ILOCKED) != 0 || ITOV(ip)->v_count == 0 ||
-                   (ip->i_flag & (IMOD|IACC|IUPD|ICHG)) == 0)
-                       continue;
-               ILOCK(ip);
-               VREF(vp);
-               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:
 }
 
 /*
  * 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 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;
        register struct mount *mp;
        struct fid *fhp;

+       struct mbuf *nam;

        struct vnode **vpp;
        struct vnode **vpp;

+       int *exflagsp;
+       struct ucred **credanonp;

 {
        register struct ufid *ufhp;
 {
        register struct ufid *ufhp;

-       register struct fs *fs;
-       register struct inode *ip;
-       struct inode *nip;
-       struct vnode tvp;
-       int error;

 
        ufhp = (struct ufid *)fhp;
 
        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);
-       }
-       tvp.v_mount = mp;
-       ip = VTOI(&tvp);
-       ip->i_vnode = &tvp;
-       ip->i_dev = VFSTOUFS(mp)->um_dev;
-       if (error = iget(ip, ufhp->ufid_ino, &nip)) {
-               *vpp = (struct vnode *)0;
-               return (error);
-       }
-       ip = nip;
-       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 */
 }
 
 /*
  * Vnode pointer to File handle
  */
 /* ARGSUSED */

-ufs_vptofh(vp, fhp)
+lfs_vptofh(vp, fhp)

        struct vnode *vp;
        struct fid *fhp;
 {
        struct vnode *vp;
        struct fid *fhp;
 {

-       register struct inode *ip = VTOI(vp);
+       register struct inode *ip;

        register struct ufid *ufhp;
 
        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);
 }
        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) {
-               vput(vp);
-               return (ENXIO);
-       }
-       iunlock(VTOI(vp));
-       *devvpp = vp;
-       return (0);
-}