Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/fs/freevxfs/Makefile b/fs/freevxfs/Makefile
new file mode 100644
index 0000000..87ad097
--- /dev/null
+++ b/fs/freevxfs/Makefile
@@ -0,0 +1,8 @@
+#
+# VxFS Makefile
+#
+
+obj-$(CONFIG_VXFS_FS) += freevxfs.o
+
+freevxfs-objs := vxfs_bmap.o vxfs_fshead.o vxfs_immed.o vxfs_inode.o \
+ vxfs_lookup.o vxfs_olt.o vxfs_subr.o vxfs_super.o
diff --git a/fs/freevxfs/vxfs.h b/fs/freevxfs/vxfs.h
new file mode 100644
index 0000000..8da0252
--- /dev/null
+++ b/fs/freevxfs/vxfs.h
@@ -0,0 +1,264 @@
+/*
+ * Copyright (c) 2000-2001 Christoph Hellwig.
+ * 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,
+ * without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL").
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ */
+#ifndef _VXFS_SUPER_H_
+#define _VXFS_SUPER_H_
+
+/*
+ * Veritas filesystem driver - superblock structure.
+ *
+ * This file contains the definition of the disk and core
+ * superblocks of the Veritas Filesystem.
+ */
+#include <linux/types.h>
+#include "vxfs_kcompat.h"
+
+
+/*
+ * Data types for use with the VxFS ondisk format.
+ */
+typedef int32_t vx_daddr_t;
+typedef int32_t vx_ino_t;
+
+/*
+ * Superblock magic number (vxfs_super->vs_magic).
+ */
+#define VXFS_SUPER_MAGIC 0xa501FCF5
+
+/*
+ * The root inode.
+ */
+#define VXFS_ROOT_INO 2
+
+/*
+ * Num of entries in free extent array
+ */
+#define VXFS_NEFREE 32
+
+
+/*
+ * VxFS superblock (disk).
+ */
+struct vxfs_sb {
+ /*
+ * Readonly fields for the version 1 superblock.
+ *
+ * Lots of this fields are no more used by version 2
+ * and never filesystems.
+ */
+ u_int32_t vs_magic; /* Magic number */
+ int32_t vs_version; /* VxFS version */
+ u_int32_t vs_ctime; /* create time - secs */
+ u_int32_t vs_cutime; /* create time - usecs */
+ int32_t __unused1; /* unused */
+ int32_t __unused2; /* unused */
+ vx_daddr_t vs_old_logstart; /* obsolete */
+ vx_daddr_t vs_old_logend; /* obsolete */
+ int32_t vs_bsize; /* block size */
+ int32_t vs_size; /* number of blocks */
+ int32_t vs_dsize; /* number of data blocks */
+ u_int32_t vs_old_ninode; /* obsolete */
+ int32_t vs_old_nau; /* obsolete */
+ int32_t __unused3; /* unused */
+ int32_t vs_old_defiextsize; /* obsolete */
+ int32_t vs_old_ilbsize; /* obsolete */
+ int32_t vs_immedlen; /* size of immediate data area */
+ int32_t vs_ndaddr; /* number of direct extentes */
+ vx_daddr_t vs_firstau; /* address of first AU */
+ vx_daddr_t vs_emap; /* offset of extent map in AU */
+ vx_daddr_t vs_imap; /* offset of inode map in AU */
+ vx_daddr_t vs_iextop; /* offset of ExtOp. map in AU */
+ vx_daddr_t vs_istart; /* offset of inode list in AU */
+ vx_daddr_t vs_bstart; /* offset of fdblock in AU */
+ vx_daddr_t vs_femap; /* aufirst + emap */
+ vx_daddr_t vs_fimap; /* aufirst + imap */
+ vx_daddr_t vs_fiextop; /* aufirst + iextop */
+ vx_daddr_t vs_fistart; /* aufirst + istart */
+ vx_daddr_t vs_fbstart; /* aufirst + bstart */
+ int32_t vs_nindir; /* number of entries in indir */
+ int32_t vs_aulen; /* length of AU in blocks */
+ int32_t vs_auimlen; /* length of imap in blocks */
+ int32_t vs_auemlen; /* length of emap in blocks */
+ int32_t vs_auilen; /* length of ilist in blocks */
+ int32_t vs_aupad; /* length of pad in blocks */
+ int32_t vs_aublocks; /* data blocks in AU */
+ int32_t vs_maxtier; /* log base 2 of aublocks */
+ int32_t vs_inopb; /* number of inodes per blk */
+ int32_t vs_old_inopau; /* obsolete */
+ int32_t vs_old_inopilb; /* obsolete */
+ int32_t vs_old_ndiripau; /* obsolete */
+ int32_t vs_iaddrlen; /* size of indirect addr ext. */
+ int32_t vs_bshift; /* log base 2 of bsize */
+ int32_t vs_inoshift; /* log base 2 of inobp */
+ int32_t vs_bmask; /* ~( bsize - 1 ) */
+ int32_t vs_boffmask; /* bsize - 1 */
+ int32_t vs_old_inomask; /* old_inopilb - 1 */
+ int32_t vs_checksum; /* checksum of V1 data */
+
+ /*
+ * Version 1, writable
+ */
+ int32_t vs_free; /* number of free blocks */
+ int32_t vs_ifree; /* number of free inodes */
+ int32_t vs_efree[VXFS_NEFREE]; /* number of free extents by size */
+ int32_t vs_flags; /* flags ?!? */
+ u_int8_t vs_mod; /* filesystem has been changed */
+ u_int8_t vs_clean; /* clean FS */
+ u_int16_t __unused4; /* unused */
+ u_int32_t vs_firstlogid; /* mount time log ID */
+ u_int32_t vs_wtime; /* last time written - sec */
+ u_int32_t vs_wutime; /* last time written - usec */
+ u_int8_t vs_fname[6]; /* FS name */
+ u_int8_t vs_fpack[6]; /* FS pack name */
+ int32_t vs_logversion; /* log format version */
+ int32_t __unused5; /* unused */
+
+ /*
+ * Version 2, Read-only
+ */
+ vx_daddr_t vs_oltext[2]; /* OLT extent and replica */
+ int32_t vs_oltsize; /* OLT extent size */
+ int32_t vs_iauimlen; /* size of inode map */
+ int32_t vs_iausize; /* size of IAU in blocks */
+ int32_t vs_dinosize; /* size of inode in bytes */
+ int32_t vs_old_dniaddr; /* indir levels per inode */
+ int32_t vs_checksum2; /* checksum of V2 RO */
+
+ /*
+ * Actually much more...
+ */
+};
+
+
+/*
+ * In core superblock filesystem private data for VxFS.
+ */
+struct vxfs_sb_info {
+ struct vxfs_sb *vsi_raw; /* raw (on disk) supeblock */
+ struct buffer_head *vsi_bp; /* buffer for raw superblock*/
+ struct inode *vsi_fship; /* fileset header inode */
+ struct inode *vsi_ilist; /* inode list inode */
+ struct inode *vsi_stilist; /* structual inode list inode */
+ u_long vsi_iext; /* initial inode list */
+ ino_t vsi_fshino; /* fileset header inode */
+ daddr_t vsi_oltext; /* OLT extent */
+ daddr_t vsi_oltsize; /* OLT size */
+};
+
+
+/*
+ * File modes. File types above 0xf000 are vxfs internal only, they should
+ * not be passed back to higher levels of the system. vxfs file types must
+ * never have one of the regular file type bits set.
+ */
+enum vxfs_mode {
+ VXFS_ISUID = 0x00000800, /* setuid */
+ VXFS_ISGID = 0x00000400, /* setgid */
+ VXFS_ISVTX = 0x00000200, /* sticky bit */
+ VXFS_IREAD = 0x00000100, /* read */
+ VXFS_IWRITE = 0x00000080, /* write */
+ VXFS_IEXEC = 0x00000040, /* exec */
+
+ VXFS_IFIFO = 0x00001000, /* Named pipe */
+ VXFS_IFCHR = 0x00002000, /* Character device */
+ VXFS_IFDIR = 0x00004000, /* Directory */
+ VXFS_IFNAM = 0x00005000, /* Xenix device ?? */
+ VXFS_IFBLK = 0x00006000, /* Block device */
+ VXFS_IFREG = 0x00008000, /* Regular file */
+ VXFS_IFCMP = 0x00009000, /* Compressed file ?!? */
+ VXFS_IFLNK = 0x0000a000, /* Symlink */
+ VXFS_IFSOC = 0x0000c000, /* Socket */
+
+ /* VxFS internal */
+ VXFS_IFFSH = 0x10000000, /* Fileset header */
+ VXFS_IFILT = 0x20000000, /* Inode list */
+ VXFS_IFIAU = 0x30000000, /* Inode allocation unit */
+ VXFS_IFCUT = 0x40000000, /* Current usage table */
+ VXFS_IFATT = 0x50000000, /* Attr. inode */
+ VXFS_IFLCT = 0x60000000, /* Link count table */
+ VXFS_IFIAT = 0x70000000, /* Indirect attribute file */
+ VXFS_IFEMR = 0x80000000, /* Extent map reorg file */
+ VXFS_IFQUO = 0x90000000, /* BSD quota file */
+ VXFS_IFPTI = 0xa0000000, /* "Pass through" inode */
+ VXFS_IFLAB = 0x11000000, /* Device label file */
+ VXFS_IFOLT = 0x12000000, /* OLT file */
+ VXFS_IFLOG = 0x13000000, /* Log file */
+ VXFS_IFEMP = 0x14000000, /* Extent map file */
+ VXFS_IFEAU = 0x15000000, /* Extent AU file */
+ VXFS_IFAUS = 0x16000000, /* Extent AU summary file */
+ VXFS_IFDEV = 0x17000000, /* Device config file */
+
+};
+
+#define VXFS_TYPE_MASK 0xfffff000
+
+#define VXFS_IS_TYPE(ip,type) (((ip)->vii_mode & VXFS_TYPE_MASK) == (type))
+#define VXFS_ISFIFO(x) VXFS_IS_TYPE((x),VXFS_IFIFO)
+#define VXFS_ISCHR(x) VXFS_IS_TYPE((x),VXFS_IFCHR)
+#define VXFS_ISDIR(x) VXFS_IS_TYPE((x),VXFS_IFDIR)
+#define VXFS_ISNAM(x) VXFS_IS_TYPE((x),VXFS_IFNAM)
+#define VXFS_ISBLK(x) VXFS_IS_TYPE((x),VXFS_IFBLK)
+#define VXFS_ISLNK(x) VXFS_IS_TYPE((x),VXFS_IFLNK)
+#define VXFS_ISREG(x) VXFS_IS_TYPE((x),VXFS_IFREG)
+#define VXFS_ISCMP(x) VXFS_IS_TYPE((x),VXFS_IFCMP)
+#define VXFS_ISSOC(x) VXFS_IS_TYPE((x),VXFS_IFSOC)
+
+#define VXFS_ISFSH(x) VXFS_IS_TYPE((x),VXFS_IFFSH)
+#define VXFS_ISILT(x) VXFS_IS_TYPE((x),VXFS_IFILT)
+
+/*
+ * Inmode organisation types.
+ */
+enum {
+ VXFS_ORG_NONE = 0, /* Inode has *no* format ?!? */
+ VXFS_ORG_EXT4 = 1, /* Ext4 */
+ VXFS_ORG_IMMED = 2, /* All data stored in inode */
+ VXFS_ORG_TYPED = 3, /* Typed extents */
+};
+
+#define VXFS_IS_ORG(ip,org) ((ip)->vii_orgtype == (org))
+#define VXFS_ISNONE(ip) VXFS_IS_ORG((ip), VXFS_ORG_NONE)
+#define VXFS_ISEXT4(ip) VXFS_IS_ORG((ip), VXFS_ORG_EXT4)
+#define VXFS_ISIMMED(ip) VXFS_IS_ORG((ip), VXFS_ORG_IMMED)
+#define VXFS_ISTYPED(ip) VXFS_IS_ORG((ip), VXFS_ORG_TYPED)
+
+
+/*
+ * Get filesystem private data from VFS inode.
+ */
+#define VXFS_INO(ip) \
+ ((struct vxfs_inode_info *)(ip)->u.generic_ip)
+
+/*
+ * Get filesystem private data from VFS superblock.
+ */
+#define VXFS_SBI(sbp) \
+ ((struct vxfs_sb_info *)(sbp)->s_fs_info)
+
+#endif /* _VXFS_SUPER_H_ */
diff --git a/fs/freevxfs/vxfs_bmap.c b/fs/freevxfs/vxfs_bmap.c
new file mode 100644
index 0000000..bc4b57d
--- /dev/null
+++ b/fs/freevxfs/vxfs_bmap.c
@@ -0,0 +1,280 @@
+/*
+ * Copyright (c) 2000-2001 Christoph Hellwig.
+ * 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,
+ * without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL").
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ */
+
+/*
+ * Veritas filesystem driver - filesystem to disk block mapping.
+ */
+#include <linux/fs.h>
+#include <linux/buffer_head.h>
+#include <linux/kernel.h>
+
+#include "vxfs.h"
+#include "vxfs_inode.h"
+
+
+#ifdef DIAGNOSTIC
+static void
+vxfs_typdump(struct vxfs_typed *typ)
+{
+ printk(KERN_DEBUG "type=%Lu ", typ->vt_hdr >> VXFS_TYPED_TYPESHIFT);
+ printk("offset=%Lx ", typ->vt_hdr & VXFS_TYPED_OFFSETMASK);
+ printk("block=%x ", typ->vt_block);
+ printk("size=%x\n", typ->vt_size);
+}
+#endif
+
+/**
+ * vxfs_bmap_ext4 - do bmap for ext4 extents
+ * @ip: pointer to the inode we do bmap for
+ * @iblock: logical block.
+ *
+ * Description:
+ * vxfs_bmap_ext4 performs the bmap operation for inodes with
+ * ext4-style extents (which are much like the traditional UNIX
+ * inode organisation).
+ *
+ * Returns:
+ * The physical block number on success, else Zero.
+ */
+static daddr_t
+vxfs_bmap_ext4(struct inode *ip, long bn)
+{
+ struct super_block *sb = ip->i_sb;
+ struct vxfs_inode_info *vip = VXFS_INO(ip);
+ unsigned long bsize = sb->s_blocksize;
+ u32 indsize = vip->vii_ext4.ve4_indsize;
+ int i;
+
+ if (indsize > sb->s_blocksize)
+ goto fail_size;
+
+ for (i = 0; i < VXFS_NDADDR; i++) {
+ struct direct *d = vip->vii_ext4.ve4_direct + i;
+ if (bn >= 0 && bn < d->size)
+ return (bn + d->extent);
+ bn -= d->size;
+ }
+
+ if ((bn / (indsize * indsize * bsize / 4)) == 0) {
+ struct buffer_head *buf;
+ daddr_t bno;
+ u32 *indir;
+
+ buf = sb_bread(sb, vip->vii_ext4.ve4_indir[0]);
+ if (!buf || !buffer_mapped(buf))
+ goto fail_buf;
+
+ indir = (u32 *)buf->b_data;
+ bno = indir[(bn/indsize) % (indsize*bn)] + (bn%indsize);
+
+ brelse(buf);
+ return bno;
+ } else
+ printk(KERN_WARNING "no matching indir?");
+
+ return 0;
+
+fail_size:
+ printk("vxfs: indirect extent to big!\n");
+fail_buf:
+ return 0;
+}
+
+/**
+ * vxfs_bmap_indir - recursion for vxfs_bmap_typed
+ * @ip: pointer to the inode we do bmap for
+ * @indir: indirect block we start reading at
+ * @size: size of the typed area to search
+ * @block: partially result from further searches
+ *
+ * Description:
+ * vxfs_bmap_indir reads a &struct vxfs_typed at @indir
+ * and performs the type-defined action.
+ *
+ * Return Value:
+ * The physical block number on success, else Zero.
+ *
+ * Note:
+ * Kernelstack is rare. Unrecurse?
+ */
+static daddr_t
+vxfs_bmap_indir(struct inode *ip, long indir, int size, long block)
+{
+ struct buffer_head *bp = NULL;
+ daddr_t pblock = 0;
+ int i;
+
+ for (i = 0; i < size * VXFS_TYPED_PER_BLOCK(ip->i_sb); i++) {
+ struct vxfs_typed *typ;
+ int64_t off;
+
+ bp = sb_bread(ip->i_sb,
+ indir + (i / VXFS_TYPED_PER_BLOCK(ip->i_sb)));
+ if (!buffer_mapped(bp))
+ return 0;
+
+ typ = ((struct vxfs_typed *)bp->b_data) +
+ (i % VXFS_TYPED_PER_BLOCK(ip->i_sb));
+ off = (typ->vt_hdr & VXFS_TYPED_OFFSETMASK);
+
+ if (block < off) {
+ brelse(bp);
+ continue;
+ }
+
+ switch ((u_int32_t)(typ->vt_hdr >> VXFS_TYPED_TYPESHIFT)) {
+ case VXFS_TYPED_INDIRECT:
+ pblock = vxfs_bmap_indir(ip, typ->vt_block,
+ typ->vt_size, block - off);
+ if (pblock == -2)
+ break;
+ goto out;
+ case VXFS_TYPED_DATA:
+ if ((block - off) >= typ->vt_size)
+ break;
+ pblock = (typ->vt_block + block - off);
+ goto out;
+ case VXFS_TYPED_INDIRECT_DEV4:
+ case VXFS_TYPED_DATA_DEV4: {
+ struct vxfs_typed_dev4 *typ4 =
+ (struct vxfs_typed_dev4 *)typ;
+
+ printk(KERN_INFO "\n\nTYPED_DEV4 detected!\n");
+ printk(KERN_INFO "block: %Lu\tsize: %Ld\tdev: %d\n",
+ (unsigned long long) typ4->vd4_block,
+ (unsigned long long) typ4->vd4_size,
+ typ4->vd4_dev);
+ goto fail;
+ }
+ default:
+ BUG();
+ }
+ brelse(bp);
+ }
+
+fail:
+ pblock = 0;
+out:
+ brelse(bp);
+ return (pblock);
+}
+
+/**
+ * vxfs_bmap_typed - bmap for typed extents
+ * @ip: pointer to the inode we do bmap for
+ * @iblock: logical block
+ *
+ * Description:
+ * Performs the bmap operation for typed extents.
+ *
+ * Return Value:
+ * The physical block number on success, else Zero.
+ */
+static daddr_t
+vxfs_bmap_typed(struct inode *ip, long iblock)
+{
+ struct vxfs_inode_info *vip = VXFS_INO(ip);
+ daddr_t pblock = 0;
+ int i;
+
+ for (i = 0; i < VXFS_NTYPED; i++) {
+ struct vxfs_typed *typ = vip->vii_org.typed + i;
+ int64_t off = (typ->vt_hdr & VXFS_TYPED_OFFSETMASK);
+
+#ifdef DIAGNOSTIC
+ vxfs_typdump(typ);
+#endif
+ if (iblock < off)
+ continue;
+ switch ((u_int32_t)(typ->vt_hdr >> VXFS_TYPED_TYPESHIFT)) {
+ case VXFS_TYPED_INDIRECT:
+ pblock = vxfs_bmap_indir(ip, typ->vt_block,
+ typ->vt_size, iblock - off);
+ if (pblock == -2)
+ break;
+ return (pblock);
+ case VXFS_TYPED_DATA:
+ if ((iblock - off) < typ->vt_size)
+ return (typ->vt_block + iblock - off);
+ break;
+ case VXFS_TYPED_INDIRECT_DEV4:
+ case VXFS_TYPED_DATA_DEV4: {
+ struct vxfs_typed_dev4 *typ4 =
+ (struct vxfs_typed_dev4 *)typ;
+
+ printk(KERN_INFO "\n\nTYPED_DEV4 detected!\n");
+ printk(KERN_INFO "block: %Lu\tsize: %Ld\tdev: %d\n",
+ (unsigned long long) typ4->vd4_block,
+ (unsigned long long) typ4->vd4_size,
+ typ4->vd4_dev);
+ return 0;
+ }
+ default:
+ BUG();
+ }
+ }
+
+ return 0;
+}
+
+/**
+ * vxfs_bmap1 - vxfs-internal bmap operation
+ * @ip: pointer to the inode we do bmap for
+ * @iblock: logical block
+ *
+ * Description:
+ * vxfs_bmap1 perfoms a logical to physical block mapping
+ * for vxfs-internal purposes.
+ *
+ * Return Value:
+ * The physical block number on success, else Zero.
+ */
+daddr_t
+vxfs_bmap1(struct inode *ip, long iblock)
+{
+ struct vxfs_inode_info *vip = VXFS_INO(ip);
+
+ if (VXFS_ISEXT4(vip))
+ return vxfs_bmap_ext4(ip, iblock);
+ if (VXFS_ISTYPED(vip))
+ return vxfs_bmap_typed(ip, iblock);
+ if (VXFS_ISNONE(vip))
+ goto unsupp;
+ if (VXFS_ISIMMED(vip))
+ goto unsupp;
+
+ printk(KERN_WARNING "vxfs: inode %ld has no valid orgtype (%x)\n",
+ ip->i_ino, vip->vii_orgtype);
+ BUG();
+
+unsupp:
+ printk(KERN_WARNING "vxfs: inode %ld has an unsupported orgtype (%x)\n",
+ ip->i_ino, vip->vii_orgtype);
+ return 0;
+}
diff --git a/fs/freevxfs/vxfs_dir.h b/fs/freevxfs/vxfs_dir.h
new file mode 100644
index 0000000..8a4dfef
--- /dev/null
+++ b/fs/freevxfs/vxfs_dir.h
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2000-2001 Christoph Hellwig.
+ * 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,
+ * without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL").
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ */
+#ifndef _VXFS_DIR_H_
+#define _VXFS_DIR_H_
+
+/*
+ * Veritas filesystem driver - directory structure.
+ *
+ * This file contains the definition of the vxfs directory format.
+ */
+
+
+/*
+ * VxFS directory block header.
+ *
+ * This entry is the head of every filesystem block in a directory.
+ * It is used for free space managment and additionally includes
+ * a hash for speeding up directory search (lookup).
+ *
+ * The hash may be empty and in fact we do not use it all in the
+ * Linux driver for now.
+ */
+struct vxfs_dirblk {
+ u_int16_t d_free; /* free space in dirblock */
+ u_int16_t d_nhash; /* no of hash chains */
+ u_int16_t d_hash[1]; /* hash chain */
+};
+
+/*
+ * VXFS_NAMELEN is the maximum length of the d_name field
+ * of an VxFS directory entry.
+ */
+#define VXFS_NAMELEN 256
+
+/*
+ * VxFS directory entry.
+ */
+struct vxfs_direct {
+ vx_ino_t d_ino; /* inode number */
+ u_int16_t d_reclen; /* record length */
+ u_int16_t d_namelen; /* d_name length */
+ u_int16_t d_hashnext; /* next hash entry */
+ char d_name[VXFS_NAMELEN]; /* name */
+};
+
+/*
+ * VXFS_DIRPAD defines the directory entry boundaries, is _must_ be
+ * a multiple of four.
+ * VXFS_NAMEMIN is the length of a directory entry with a NULL d_name.
+ * VXFS_DIRROUND is an internal macros that rounds a length to a value
+ * usable for directory sizes.
+ * VXFS_DIRLEN calculates the directory entry size for an entry with
+ * a d_name with size len.
+ */
+#define VXFS_DIRPAD 4
+#define VXFS_NAMEMIN ((int)((struct vxfs_direct *)0)->d_name)
+#define VXFS_DIRROUND(len) ((VXFS_DIRPAD + (len) - 1) & ~(VXFS_DIRPAD -1))
+#define VXFS_DIRLEN(len) (VXFS_DIRROUND(VXFS_NAMEMIN + (len)))
+
+/*
+ * VXFS_DIRBLKOV is the overhead of a specific dirblock.
+ */
+#define VXFS_DIRBLKOV(dbp) ((sizeof(short) * dbp->d_nhash) + 4)
+
+#endif /* _VXFS_DIR_H_ */
diff --git a/fs/freevxfs/vxfs_extern.h b/fs/freevxfs/vxfs_extern.h
new file mode 100644
index 0000000..d8be917
--- /dev/null
+++ b/fs/freevxfs/vxfs_extern.h
@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2000-2001 Christoph Hellwig.
+ * 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,
+ * without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL").
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ */
+#ifndef _VXFS_EXTERN_H_
+#define _VXFS_EXTERN_H_
+
+/*
+ * Veritas filesystem driver - external prototypes.
+ *
+ * This file contains prototypes for all vxfs functions used
+ * outside their respective source files.
+ */
+
+
+struct kmem_cache_s;
+struct super_block;
+struct vxfs_inode_info;
+struct inode;
+
+
+/* vxfs_bmap.c */
+extern daddr_t vxfs_bmap1(struct inode *, long);
+
+/* vxfs_fshead.c */
+extern int vxfs_read_fshead(struct super_block *);
+
+/* vxfs_inode.c */
+extern struct kmem_cache_s *vxfs_inode_cachep;
+extern void vxfs_dumpi(struct vxfs_inode_info *, ino_t);
+extern struct inode * vxfs_get_fake_inode(struct super_block *,
+ struct vxfs_inode_info *);
+extern void vxfs_put_fake_inode(struct inode *);
+extern struct vxfs_inode_info * vxfs_blkiget(struct super_block *, u_long, ino_t);
+extern struct vxfs_inode_info * vxfs_stiget(struct super_block *, ino_t);
+extern void vxfs_read_inode(struct inode *);
+extern void vxfs_clear_inode(struct inode *);
+
+/* vxfs_lookup.c */
+extern struct inode_operations vxfs_dir_inode_ops;
+extern struct file_operations vxfs_dir_operations;
+
+/* vxfs_olt.c */
+extern int vxfs_read_olt(struct super_block *, u_long);
+
+/* vxfs_subr.c */
+extern struct page * vxfs_get_page(struct address_space *, u_long);
+extern void vxfs_put_page(struct page *);
+extern struct buffer_head * vxfs_bread(struct inode *, int);
+
+#endif /* _VXFS_EXTERN_H_ */
diff --git a/fs/freevxfs/vxfs_fshead.c b/fs/freevxfs/vxfs_fshead.c
new file mode 100644
index 0000000..05b19f7
--- /dev/null
+++ b/fs/freevxfs/vxfs_fshead.c
@@ -0,0 +1,202 @@
+/*
+ * Copyright (c) 2000-2001 Christoph Hellwig.
+ * 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,
+ * without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL").
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ */
+
+/*
+ * Veritas filesystem driver - fileset header routines.
+ */
+#include <linux/fs.h>
+#include <linux/buffer_head.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+
+#include "vxfs.h"
+#include "vxfs_inode.h"
+#include "vxfs_extern.h"
+#include "vxfs_fshead.h"
+
+
+#ifdef DIAGNOSTIC
+static void
+vxfs_dumpfsh(struct vxfs_fsh *fhp)
+{
+ printk("\n\ndumping fileset header:\n");
+ printk("----------------------------\n");
+ printk("version: %u\n", fhp->fsh_version);
+ printk("fsindex: %u\n", fhp->fsh_fsindex);
+ printk("iauino: %u\tninodes:%u\n",
+ fhp->fsh_iauino, fhp->fsh_ninodes);
+ printk("maxinode: %u\tlctino: %u\n",
+ fhp->fsh_maxinode, fhp->fsh_lctino);
+ printk("nau: %u\n", fhp->fsh_nau);
+ printk("ilistino[0]: %u\tilistino[1]: %u\n",
+ fhp->fsh_ilistino[0], fhp->fsh_ilistino[1]);
+}
+#endif
+
+/**
+ * vxfs_getfsh - read fileset header into memory
+ * @ip: the (fake) fileset header inode
+ * @which: 0 for the structural, 1 for the primary fsh.
+ *
+ * Description:
+ * vxfs_getfsh reads either the structural or primary fileset header
+ * described by @ip into memory.
+ *
+ * Returns:
+ * The fileset header structure on success, else Zero.
+ */
+static struct vxfs_fsh *
+vxfs_getfsh(struct inode *ip, int which)
+{
+ struct buffer_head *bp;
+
+ bp = vxfs_bread(ip, which);
+ if (buffer_mapped(bp)) {
+ struct vxfs_fsh *fhp;
+
+ if (!(fhp = kmalloc(sizeof(*fhp), SLAB_KERNEL)))
+ return NULL;
+ memcpy(fhp, bp->b_data, sizeof(*fhp));
+
+ brelse(bp);
+ return (fhp);
+ }
+
+ return NULL;
+}
+
+/**
+ * vxfs_read_fshead - read the fileset headers
+ * @sbp: superblock to which the fileset belongs
+ *
+ * Description:
+ * vxfs_read_fshead will fill the inode and structural inode list in @sb.
+ *
+ * Returns:
+ * Zero on success, else a negative error code (-EINVAL).
+ */
+int
+vxfs_read_fshead(struct super_block *sbp)
+{
+ struct vxfs_sb_info *infp = VXFS_SBI(sbp);
+ struct vxfs_fsh *pfp, *sfp;
+ struct vxfs_inode_info *vip, *tip;
+
+ vip = vxfs_blkiget(sbp, infp->vsi_iext, infp->vsi_fshino);
+ if (!vip) {
+ printk(KERN_ERR "vxfs: unabled to read fsh inode\n");
+ return -EINVAL;
+ }
+ if (!VXFS_ISFSH(vip)) {
+ printk(KERN_ERR "vxfs: fsh list inode is of wrong type (%x)\n",
+ vip->vii_mode & VXFS_TYPE_MASK);
+ goto out_free_fship;
+ }
+
+
+#ifdef DIAGNOSTIC
+ printk("vxfs: fsh inode dump:\n");
+ vxfs_dumpi(vip, infp->vsi_fshino);
+#endif
+
+ infp->vsi_fship = vxfs_get_fake_inode(sbp, vip);
+ if (!infp->vsi_fship) {
+ printk(KERN_ERR "vxfs: unabled to get fsh inode\n");
+ goto out_free_fship;
+ }
+
+ sfp = vxfs_getfsh(infp->vsi_fship, 0);
+ if (!sfp) {
+ printk(KERN_ERR "vxfs: unabled to get structural fsh\n");
+ goto out_iput_fship;
+ }
+
+#ifdef DIAGNOSTIC
+ vxfs_dumpfsh(sfp);
+#endif
+
+ pfp = vxfs_getfsh(infp->vsi_fship, 1);
+ if (!pfp) {
+ printk(KERN_ERR "vxfs: unabled to get primary fsh\n");
+ goto out_free_sfp;
+ }
+
+#ifdef DIAGNOSTIC
+ vxfs_dumpfsh(pfp);
+#endif
+
+ tip = vxfs_blkiget(sbp, infp->vsi_iext, sfp->fsh_ilistino[0]);
+ if (!tip)
+ goto out_free_pfp;
+
+ infp->vsi_stilist = vxfs_get_fake_inode(sbp, tip);
+ if (!infp->vsi_stilist) {
+ printk(KERN_ERR "vxfs: unabled to get structual list inode\n");
+ kfree(tip);
+ goto out_free_pfp;
+ }
+ if (!VXFS_ISILT(VXFS_INO(infp->vsi_stilist))) {
+ printk(KERN_ERR "vxfs: structual list inode is of wrong type (%x)\n",
+ VXFS_INO(infp->vsi_stilist)->vii_mode & VXFS_TYPE_MASK);
+ goto out_iput_stilist;
+ }
+
+ tip = vxfs_stiget(sbp, pfp->fsh_ilistino[0]);
+ if (!tip)
+ goto out_iput_stilist;
+ infp->vsi_ilist = vxfs_get_fake_inode(sbp, tip);
+ if (!infp->vsi_ilist) {
+ printk(KERN_ERR "vxfs: unabled to get inode list inode\n");
+ kfree(tip);
+ goto out_iput_stilist;
+ }
+ if (!VXFS_ISILT(VXFS_INO(infp->vsi_ilist))) {
+ printk(KERN_ERR "vxfs: inode list inode is of wrong type (%x)\n",
+ VXFS_INO(infp->vsi_ilist)->vii_mode & VXFS_TYPE_MASK);
+ goto out_iput_ilist;
+ }
+
+ return 0;
+
+ out_iput_ilist:
+ iput(infp->vsi_ilist);
+ out_iput_stilist:
+ iput(infp->vsi_stilist);
+ out_free_pfp:
+ kfree(pfp);
+ out_free_sfp:
+ kfree(sfp);
+ out_iput_fship:
+ iput(infp->vsi_fship);
+ return -EINVAL;
+ out_free_fship:
+ kfree(vip);
+ return -EINVAL;
+}
diff --git a/fs/freevxfs/vxfs_fshead.h b/fs/freevxfs/vxfs_fshead.h
new file mode 100644
index 0000000..ead0d64
--- /dev/null
+++ b/fs/freevxfs/vxfs_fshead.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2000-2001 Christoph Hellwig.
+ * 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,
+ * without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL").
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ */
+#ifndef _VXFS_FSHEAD_H_
+#define _VXFS_FSHEAD_H_
+
+/*
+ * Veritas filesystem driver - fileset header structures.
+ *
+ * This file contains the physical structure of the VxFS
+ * fileset header.
+ */
+
+
+/*
+ * Fileset header
+ */
+struct vxfs_fsh {
+ u_int32_t fsh_version; /* fileset header version */
+ u_int32_t fsh_fsindex; /* fileset index */
+ u_int32_t fsh_time; /* modification time - sec */
+ u_int32_t fsh_utime; /* modification time - usec */
+ u_int32_t fsh_extop; /* extop flags */
+ vx_ino_t fsh_ninodes; /* allocated inodes */
+ u_int32_t fsh_nau; /* number of IAUs */
+ u_int32_t fsh_old_ilesize; /* old size of ilist */
+ u_int32_t fsh_dflags; /* flags */
+ u_int32_t fsh_quota; /* quota limit */
+ vx_ino_t fsh_maxinode; /* maximum inode number */
+ vx_ino_t fsh_iauino; /* IAU inode */
+ vx_ino_t fsh_ilistino[2]; /* ilist inodes */
+ vx_ino_t fsh_lctino; /* link count table inode */
+
+ /*
+ * Slightly more fields follow, but they
+ * a) are not of any interest for us, and
+ * b) differ a lot in different vxfs versions/ports
+ */
+};
+
+#endif /* _VXFS_FSHEAD_H_ */
diff --git a/fs/freevxfs/vxfs_immed.c b/fs/freevxfs/vxfs_immed.c
new file mode 100644
index 0000000..ac677ab
--- /dev/null
+++ b/fs/freevxfs/vxfs_immed.c
@@ -0,0 +1,114 @@
+/*
+ * Copyright (c) 2000-2001 Christoph Hellwig.
+ * 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,
+ * without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL").
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ */
+
+/*
+ * Veritas filesystem driver - support for 'immed' inodes.
+ */
+#include <linux/fs.h>
+#include <linux/pagemap.h>
+#include <linux/namei.h>
+
+#include "vxfs.h"
+#include "vxfs_inode.h"
+
+
+static int vxfs_immed_follow_link(struct dentry *, struct nameidata *);
+
+static int vxfs_immed_readpage(struct file *, struct page *);
+
+/*
+ * Inode operations for immed symlinks.
+ *
+ * Unliked all other operations we do not go through the pagecache,
+ * but do all work directly on the inode.
+ */
+struct inode_operations vxfs_immed_symlink_iops = {
+ .readlink = generic_readlink,
+ .follow_link = vxfs_immed_follow_link,
+};
+
+/*
+ * Adress space operations for immed files and directories.
+ */
+struct address_space_operations vxfs_immed_aops = {
+ .readpage = vxfs_immed_readpage,
+};
+
+/**
+ * vxfs_immed_follow_link - follow immed symlink
+ * @dp: dentry for the link
+ * @np: pathname lookup data for the current path walk
+ *
+ * Description:
+ * vxfs_immed_follow_link restarts the pathname lookup with
+ * the data obtained from @dp.
+ *
+ * Returns:
+ * Zero on success, else a negative error code.
+ */
+static int
+vxfs_immed_follow_link(struct dentry *dp, struct nameidata *np)
+{
+ struct vxfs_inode_info *vip = VXFS_INO(dp->d_inode);
+ nd_set_link(np, vip->vii_immed.vi_immed);
+ return 0;
+}
+
+/**
+ * vxfs_immed_readpage - read part of an immed inode into pagecache
+ * @file: file context (unused)
+ * @page: page frame to fill in.
+ *
+ * Description:
+ * vxfs_immed_readpage reads a part of the immed area of the
+ * file that hosts @pp into the pagecache.
+ *
+ * Returns:
+ * Zero on success, else a negative error code.
+ *
+ * Locking status:
+ * @page is locked and will be unlocked.
+ */
+static int
+vxfs_immed_readpage(struct file *fp, struct page *pp)
+{
+ struct vxfs_inode_info *vip = VXFS_INO(pp->mapping->host);
+ u_int64_t offset = pp->index << PAGE_CACHE_SHIFT;
+ caddr_t kaddr;
+
+ kaddr = kmap(pp);
+ memcpy(kaddr, vip->vii_immed.vi_immed + offset, PAGE_CACHE_SIZE);
+ kunmap(pp);
+
+ flush_dcache_page(pp);
+ SetPageUptodate(pp);
+ unlock_page(pp);
+
+ return 0;
+}
diff --git a/fs/freevxfs/vxfs_inode.c b/fs/freevxfs/vxfs_inode.c
new file mode 100644
index 0000000..9672d2f
--- /dev/null
+++ b/fs/freevxfs/vxfs_inode.c
@@ -0,0 +1,351 @@
+/*
+ * Copyright (c) 2000-2001 Christoph Hellwig.
+ * 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,
+ * without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL").
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ */
+
+/*
+ * Veritas filesystem driver - inode routines.
+ */
+#include <linux/fs.h>
+#include <linux/buffer_head.h>
+#include <linux/pagemap.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+
+#include "vxfs.h"
+#include "vxfs_inode.h"
+#include "vxfs_extern.h"
+
+
+extern struct address_space_operations vxfs_aops;
+extern struct address_space_operations vxfs_immed_aops;
+
+extern struct inode_operations vxfs_immed_symlink_iops;
+
+static struct file_operations vxfs_file_operations = {
+ .open = generic_file_open,
+ .llseek = generic_file_llseek,
+ .read = generic_file_read,
+ .mmap = generic_file_mmap,
+ .sendfile = generic_file_sendfile,
+};
+
+
+kmem_cache_t *vxfs_inode_cachep;
+
+
+#ifdef DIAGNOSTIC
+/*
+ * Dump inode contents (partially).
+ */
+void
+vxfs_dumpi(struct vxfs_inode_info *vip, ino_t ino)
+{
+ printk(KERN_DEBUG "\n\n");
+ if (ino)
+ printk(KERN_DEBUG "dumping vxfs inode %ld\n", ino);
+ else
+ printk(KERN_DEBUG "dumping unknown vxfs inode\n");
+
+ printk(KERN_DEBUG "---------------------------\n");
+ printk(KERN_DEBUG "mode is %x\n", vip->vii_mode);
+ printk(KERN_DEBUG "nlink:%u, uid:%u, gid:%u\n",
+ vip->vii_nlink, vip->vii_uid, vip->vii_gid);
+ printk(KERN_DEBUG "size:%Lx, blocks:%u\n",
+ vip->vii_size, vip->vii_blocks);
+ printk(KERN_DEBUG "orgtype:%u\n", vip->vii_orgtype);
+}
+#endif
+
+
+/**
+ * vxfs_blkiget - find inode based on extent #
+ * @sbp: superblock of the filesystem we search in
+ * @extent: number of the extent to search
+ * @ino: inode number to search
+ *
+ * Description:
+ * vxfs_blkiget searches inode @ino in the filesystem described by
+ * @sbp in the extent @extent.
+ * Returns the matching VxFS inode on success, else a NULL pointer.
+ *
+ * NOTE:
+ * While __vxfs_iget uses the pagecache vxfs_blkiget uses the
+ * buffercache. This function should not be used outside the
+ * read_super() method, otherwise the data may be incoherent.
+ */
+struct vxfs_inode_info *
+vxfs_blkiget(struct super_block *sbp, u_long extent, ino_t ino)
+{
+ struct buffer_head *bp;
+ u_long block, offset;
+
+ block = extent + ((ino * VXFS_ISIZE) / sbp->s_blocksize);
+ offset = ((ino % (sbp->s_blocksize / VXFS_ISIZE)) * VXFS_ISIZE);
+ bp = sb_bread(sbp, block);
+
+ if (buffer_mapped(bp)) {
+ struct vxfs_inode_info *vip;
+ struct vxfs_dinode *dip;
+
+ if (!(vip = kmem_cache_alloc(vxfs_inode_cachep, SLAB_KERNEL)))
+ goto fail;
+ dip = (struct vxfs_dinode *)(bp->b_data + offset);
+ memcpy(vip, dip, sizeof(*vip));
+#ifdef DIAGNOSTIC
+ vxfs_dumpi(vip, ino);
+#endif
+ brelse(bp);
+ return (vip);
+ }
+
+fail:
+ printk(KERN_WARNING "vxfs: unable to read block %ld\n", block);
+ brelse(bp);
+ return NULL;
+}
+
+/**
+ * __vxfs_iget - generic find inode facility
+ * @sbp: VFS superblock
+ * @ino: inode number
+ * @ilistp: inode list
+ *
+ * Description:
+ * Search the for inode number @ino in the filesystem
+ * described by @sbp. Use the specified inode table (@ilistp).
+ * Returns the matching VxFS inode on success, else a NULL pointer.
+ */
+static struct vxfs_inode_info *
+__vxfs_iget(ino_t ino, struct inode *ilistp)
+{
+ struct page *pp;
+ u_long offset;
+
+ offset = (ino % (PAGE_SIZE / VXFS_ISIZE)) * VXFS_ISIZE;
+ pp = vxfs_get_page(ilistp->i_mapping, ino * VXFS_ISIZE / PAGE_SIZE);
+
+ if (!IS_ERR(pp)) {
+ struct vxfs_inode_info *vip;
+ struct vxfs_dinode *dip;
+ caddr_t kaddr = (char *)page_address(pp);
+
+ if (!(vip = kmem_cache_alloc(vxfs_inode_cachep, SLAB_KERNEL)))
+ goto fail;
+ dip = (struct vxfs_dinode *)(kaddr + offset);
+ memcpy(vip, dip, sizeof(*vip));
+#ifdef DIAGNOSTIC
+ vxfs_dumpi(vip, ino);
+#endif
+ vxfs_put_page(pp);
+ return (vip);
+ }
+
+ printk(KERN_WARNING "vxfs: error on page %p\n", pp);
+ return NULL;
+
+fail:
+ printk(KERN_WARNING "vxfs: unable to read inode %ld\n", (unsigned long)ino);
+ vxfs_put_page(pp);
+ return NULL;
+}
+
+/**
+ * vxfs_stiget - find inode using the structural inode list
+ * @sbp: VFS superblock
+ * @ino: inode #
+ *
+ * Description:
+ * Find inode @ino in the filesystem described by @sbp using
+ * the structural inode list.
+ * Returns the matching VxFS inode on success, else a NULL pointer.
+ */
+struct vxfs_inode_info *
+vxfs_stiget(struct super_block *sbp, ino_t ino)
+{
+ return __vxfs_iget(ino, VXFS_SBI(sbp)->vsi_stilist);
+}
+
+/**
+ * vxfs_transmod - mode for a VxFS inode
+ * @vip: VxFS inode
+ *
+ * Description:
+ * vxfs_transmod returns a Linux mode_t for a given
+ * VxFS inode structure.
+ */
+static __inline__ mode_t
+vxfs_transmod(struct vxfs_inode_info *vip)
+{
+ mode_t ret = vip->vii_mode & ~VXFS_TYPE_MASK;
+
+ if (VXFS_ISFIFO(vip))
+ ret |= S_IFIFO;
+ if (VXFS_ISCHR(vip))
+ ret |= S_IFCHR;
+ if (VXFS_ISDIR(vip))
+ ret |= S_IFDIR;
+ if (VXFS_ISBLK(vip))
+ ret |= S_IFBLK;
+ if (VXFS_ISLNK(vip))
+ ret |= S_IFLNK;
+ if (VXFS_ISREG(vip))
+ ret |= S_IFREG;
+ if (VXFS_ISSOC(vip))
+ ret |= S_IFSOCK;
+
+ return (ret);
+}
+
+/**
+ * vxfs_iinit- helper to fill inode fields
+ * @ip: VFS inode
+ * @vip: VxFS inode
+ *
+ * Description:
+ * vxfs_instino is a helper function to fill in all relevant
+ * fields in @ip from @vip.
+ */
+static void
+vxfs_iinit(struct inode *ip, struct vxfs_inode_info *vip)
+{
+
+ ip->i_mode = vxfs_transmod(vip);
+ ip->i_uid = (uid_t)vip->vii_uid;
+ ip->i_gid = (gid_t)vip->vii_gid;
+
+ ip->i_nlink = vip->vii_nlink;
+ ip->i_size = vip->vii_size;
+
+ ip->i_atime.tv_sec = vip->vii_atime;
+ ip->i_ctime.tv_sec = vip->vii_ctime;
+ ip->i_mtime.tv_sec = vip->vii_mtime;
+ ip->i_atime.tv_nsec = 0;
+ ip->i_ctime.tv_nsec = 0;
+ ip->i_mtime.tv_nsec = 0;
+
+ ip->i_blksize = PAGE_SIZE;
+ ip->i_blocks = vip->vii_blocks;
+ ip->i_generation = vip->vii_gen;
+
+ ip->u.generic_ip = (void *)vip;
+
+}
+
+/**
+ * vxfs_get_fake_inode - get fake inode structure
+ * @sbp: filesystem superblock
+ * @vip: fspriv inode
+ *
+ * Description:
+ * vxfs_fake_inode gets a fake inode (not in the inode hash) for a
+ * superblock, vxfs_inode pair.
+ * Returns the filled VFS inode.
+ */
+struct inode *
+vxfs_get_fake_inode(struct super_block *sbp, struct vxfs_inode_info *vip)
+{
+ struct inode *ip = NULL;
+
+ if ((ip = new_inode(sbp))) {
+ vxfs_iinit(ip, vip);
+ ip->i_mapping->a_ops = &vxfs_aops;
+ }
+ return (ip);
+}
+
+/**
+ * vxfs_put_fake_inode - free faked inode
+ * *ip: VFS inode
+ *
+ * Description:
+ * vxfs_put_fake_inode frees all data asssociated with @ip.
+ */
+void
+vxfs_put_fake_inode(struct inode *ip)
+{
+ iput(ip);
+}
+
+/**
+ * vxfs_read_inode - fill in inode information
+ * @ip: inode pointer to fill
+ *
+ * Description:
+ * vxfs_read_inode reads the disk inode for @ip and fills
+ * in all relevant fields in @ip.
+ */
+void
+vxfs_read_inode(struct inode *ip)
+{
+ struct super_block *sbp = ip->i_sb;
+ struct vxfs_inode_info *vip;
+ struct address_space_operations *aops;
+ ino_t ino = ip->i_ino;
+
+ if (!(vip = __vxfs_iget(ino, VXFS_SBI(sbp)->vsi_ilist)))
+ return;
+
+ vxfs_iinit(ip, vip);
+
+ if (VXFS_ISIMMED(vip))
+ aops = &vxfs_immed_aops;
+ else
+ aops = &vxfs_aops;
+
+ if (S_ISREG(ip->i_mode)) {
+ ip->i_fop = &vxfs_file_operations;
+ ip->i_mapping->a_ops = aops;
+ } else if (S_ISDIR(ip->i_mode)) {
+ ip->i_op = &vxfs_dir_inode_ops;
+ ip->i_fop = &vxfs_dir_operations;
+ ip->i_mapping->a_ops = aops;
+ } else if (S_ISLNK(ip->i_mode)) {
+ if (!VXFS_ISIMMED(vip)) {
+ ip->i_op = &page_symlink_inode_operations;
+ ip->i_mapping->a_ops = &vxfs_aops;
+ } else
+ ip->i_op = &vxfs_immed_symlink_iops;
+ } else
+ init_special_inode(ip, ip->i_mode, old_decode_dev(vip->vii_rdev));
+
+ return;
+}
+
+/**
+ * vxfs_clear_inode - remove inode from main memory
+ * @ip: inode to discard.
+ *
+ * Description:
+ * vxfs_clear_inode() is called on the final iput and frees the private
+ * inode area.
+ */
+void
+vxfs_clear_inode(struct inode *ip)
+{
+ kmem_cache_free(vxfs_inode_cachep, ip->u.generic_ip);
+}
diff --git a/fs/freevxfs/vxfs_inode.h b/fs/freevxfs/vxfs_inode.h
new file mode 100644
index 0000000..240aeb1
--- /dev/null
+++ b/fs/freevxfs/vxfs_inode.h
@@ -0,0 +1,180 @@
+/*
+ * Copyright (c) 2000-2001 Christoph Hellwig.
+ * 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,
+ * without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL").
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ */
+#ifndef _VXFS_INODE_H_
+#define _VXFS_INODE_H_
+
+/*
+ * Veritas filesystem driver - inode structure.
+ *
+ * This file contains the definition of the disk and core
+ * inodes of the Veritas Filesystem.
+ */
+
+
+#define VXFS_ISIZE 0x100 /* Inode size */
+
+#define VXFS_NDADDR 10 /* Number of direct addrs in inode */
+#define VXFS_NIADDR 2 /* Number of indirect addrs in inode */
+#define VXFS_NIMMED 96 /* Size of immediate data in inode */
+#define VXFS_NTYPED 6 /* Num of typed extents */
+
+#define VXFS_TYPED_OFFSETMASK (0x00FFFFFFFFFFFFFFULL)
+#define VXFS_TYPED_TYPEMASK (0xFF00000000000000ULL)
+#define VXFS_TYPED_TYPESHIFT 56
+
+#define VXFS_TYPED_PER_BLOCK(sbp) \
+ ((sbp)->s_blocksize / sizeof(struct vxfs_typed))
+
+/*
+ * Possible extent descriptor types for %VXFS_ORG_TYPED extents.
+ */
+enum {
+ VXFS_TYPED_INDIRECT = 1,
+ VXFS_TYPED_DATA = 2,
+ VXFS_TYPED_INDIRECT_DEV4 = 3,
+ VXFS_TYPED_DATA_DEV4 = 4,
+};
+
+/*
+ * Data stored immediately in the inode.
+ */
+struct vxfs_immed {
+ u_int8_t vi_immed[VXFS_NIMMED];
+};
+
+struct vxfs_ext4 {
+ u_int32_t ve4_spare; /* ?? */
+ u_int32_t ve4_indsize; /* Indirect extent size */
+ vx_daddr_t ve4_indir[VXFS_NIADDR]; /* Indirect extents */
+ struct direct { /* Direct extents */
+ vx_daddr_t extent; /* Extent number */
+ int32_t size; /* Size of extent */
+ } ve4_direct[VXFS_NDADDR];
+};
+
+struct vxfs_typed {
+ u_int64_t vt_hdr; /* Header, 0xTTOOOOOOOOOOOOOO; T=type,O=offs */
+ vx_daddr_t vt_block; /* Extent block */
+ int32_t vt_size; /* Size in blocks */
+};
+
+struct vxfs_typed_dev4 {
+ u_int64_t vd4_hdr; /* Header, 0xTTOOOOOOOOOOOOOO; T=type,O=offs */
+ u_int64_t vd4_block; /* Extent block */
+ u_int64_t vd4_size; /* Size in blocks */
+ int32_t vd4_dev; /* Device ID */
+ u_int32_t __pad1;
+};
+
+/*
+ * The inode as contained on the physical device.
+ */
+struct vxfs_dinode {
+ int32_t vdi_mode;
+ u_int32_t vdi_nlink; /* Link count */
+ u_int32_t vdi_uid; /* UID */
+ u_int32_t vdi_gid; /* GID */
+ u_int64_t vdi_size; /* Inode size in bytes */
+ u_int32_t vdi_atime; /* Last time accessed - sec */
+ u_int32_t vdi_autime; /* Last time accessed - usec */
+ u_int32_t vdi_mtime; /* Last modify time - sec */
+ u_int32_t vdi_mutime; /* Last modify time - usec */
+ u_int32_t vdi_ctime; /* Create time - sec */
+ u_int32_t vdi_cutime; /* Create time - usec */
+ u_int8_t vdi_aflags; /* Allocation flags */
+ u_int8_t vdi_orgtype; /* Organisation type */
+ u_int16_t vdi_eopflags;
+ u_int32_t vdi_eopdata;
+ union {
+ u_int32_t rdev;
+ u_int32_t dotdot;
+ struct {
+ u_int32_t reserved;
+ u_int32_t fixextsize;
+ } i_regular;
+ struct {
+ u_int32_t matchino;
+ u_int32_t fsetindex;
+ } i_vxspec;
+ u_int64_t align;
+ } vdi_ftarea;
+ u_int32_t vdi_blocks; /* How much blocks does inode occupy */
+ u_int32_t vdi_gen; /* Inode generation */
+ u_int64_t vdi_version; /* Version */
+ union {
+ struct vxfs_immed immed;
+ struct vxfs_ext4 ext4;
+ struct vxfs_typed typed[VXFS_NTYPED];
+ } vdi_org;
+ u_int32_t vdi_iattrino;
+};
+
+#define vdi_rdev vdi_ftarea.rdev
+#define vdi_dotdot vdi_ftarea.dotdot
+#define vdi_fixextsize vdi_ftarea.regular.fixextsize
+#define vdi_matchino vdi_ftarea.vxspec.matchino
+#define vdi_fsetindex vdi_ftarea.vxspec.fsetindex
+
+#define vdi_immed vdi_org.immed
+#define vdi_ext4 vdi_org.ext4
+#define vdi_typed vdi_org.typed
+
+
+/*
+ * The inode as represented in the main memory.
+ *
+ * TBD: This should become a separate structure...
+ */
+#define vxfs_inode_info vxfs_dinode
+
+#define vii_mode vdi_mode
+#define vii_uid vdi_uid
+#define vii_gid vdi_gid
+#define vii_nlink vdi_nlink
+#define vii_size vdi_size
+#define vii_atime vdi_atime
+#define vii_ctime vdi_ctime
+#define vii_mtime vdi_mtime
+#define vii_blocks vdi_blocks
+#define vii_org vdi_org
+#define vii_orgtype vdi_orgtype
+#define vii_gen vdi_gen
+
+#define vii_rdev vdi_ftarea.rdev
+#define vii_dotdot vdi_ftarea.dotdot
+#define vii_fixextsize vdi_ftarea.regular.fixextsize
+#define vii_matchino vdi_ftarea.vxspec.matchino
+#define vii_fsetindex vdi_ftarea.vxspec.fsetindex
+
+#define vii_immed vdi_org.immed
+#define vii_ext4 vdi_org.ext4
+#define vii_typed vdi_org.typed
+
+#endif /* _VXFS_INODE_H_ */
diff --git a/fs/freevxfs/vxfs_kcompat.h b/fs/freevxfs/vxfs_kcompat.h
new file mode 100644
index 0000000..342a4cc
--- /dev/null
+++ b/fs/freevxfs/vxfs_kcompat.h
@@ -0,0 +1,49 @@
+#ifndef _VXFS_KCOMPAT_H
+#define _VXFS_KCOMPAT_H
+
+#include <linux/version.h>
+
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
+
+#include <linux/blkdev.h>
+
+typedef long sector_t;
+
+/* From include/linux/fs.h (Linux 2.5.2-pre3) */
+static inline struct buffer_head * sb_bread(struct super_block *sb, int block)
+{
+ return bread(sb->s_dev, block, sb->s_blocksize);
+}
+
+/* Dito. */
+static inline void map_bh(struct buffer_head *bh, struct super_block *sb, int block)
+{
+ bh->b_state |= 1 << BH_Mapped;
+ bh->b_dev = sb->s_dev;
+ bh->b_blocknr = block;
+}
+
+/* From fs/block_dev.c (Linux 2.5.2-pre2) */
+static inline int sb_set_blocksize(struct super_block *sb, int size)
+{
+ int bits;
+ if (set_blocksize(sb->s_dev, size) < 0)
+ return 0;
+ sb->s_blocksize = size;
+ for (bits = 9, size >>= 9; size >>= 1; bits++)
+ ;
+ sb->s_blocksize_bits = bits;
+ return sb->s_blocksize;
+}
+
+/* Dito. */
+static inline int sb_min_blocksize(struct super_block *sb, int size)
+{
+ int minsize = get_hardsect_size(sb->s_dev);
+ if (size < minsize)
+ size = minsize;
+ return sb_set_blocksize(sb, size);
+}
+
+#endif /* Kernel 2.4 */
+#endif /* _VXFS_KCOMPAT_H */
diff --git a/fs/freevxfs/vxfs_lookup.c b/fs/freevxfs/vxfs_lookup.c
new file mode 100644
index 0000000..506ae25
--- /dev/null
+++ b/fs/freevxfs/vxfs_lookup.c
@@ -0,0 +1,328 @@
+/*
+ * Copyright (c) 2000-2001 Christoph Hellwig.
+ * 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,
+ * without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL").
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ */
+
+/*
+ * Veritas filesystem driver - lookup and other directory related code.
+ */
+#include <linux/fs.h>
+#include <linux/time.h>
+#include <linux/mm.h>
+#include <linux/highmem.h>
+#include <linux/kernel.h>
+#include <linux/pagemap.h>
+#include <linux/smp_lock.h>
+
+#include "vxfs.h"
+#include "vxfs_dir.h"
+#include "vxfs_inode.h"
+#include "vxfs_extern.h"
+
+/*
+ * Number of VxFS blocks per page.
+ */
+#define VXFS_BLOCK_PER_PAGE(sbp) ((PAGE_CACHE_SIZE / (sbp)->s_blocksize))
+
+
+static struct dentry * vxfs_lookup(struct inode *, struct dentry *, struct nameidata *);
+static int vxfs_readdir(struct file *, void *, filldir_t);
+
+struct inode_operations vxfs_dir_inode_ops = {
+ .lookup = vxfs_lookup,
+};
+
+struct file_operations vxfs_dir_operations = {
+ .readdir = vxfs_readdir,
+};
+
+
+static __inline__ u_long
+dir_pages(struct inode *inode)
+{
+ return (inode->i_size + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
+}
+
+static __inline__ u_long
+dir_blocks(struct inode *ip)
+{
+ u_long bsize = ip->i_sb->s_blocksize;
+ return (ip->i_size + bsize - 1) & ~(bsize - 1);
+}
+
+/*
+ * NOTE! unlike strncmp, vxfs_match returns 1 for success, 0 for failure.
+ *
+ * len <= VXFS_NAMELEN and de != NULL are guaranteed by caller.
+ */
+static __inline__ int
+vxfs_match(int len, const char * const name, struct vxfs_direct *de)
+{
+ if (len != de->d_namelen)
+ return 0;
+ if (!de->d_ino)
+ return 0;
+ return !memcmp(name, de->d_name, len);
+}
+
+static __inline__ struct vxfs_direct *
+vxfs_next_entry(struct vxfs_direct *de)
+{
+ return ((struct vxfs_direct *)((char*)de + de->d_reclen));
+}
+
+/**
+ * vxfs_find_entry - find a mathing directory entry for a dentry
+ * @ip: directory inode
+ * @dp: dentry for which we want to find a direct
+ * @ppp: gets filled with the page the return value sits in
+ *
+ * Description:
+ * vxfs_find_entry finds a &struct vxfs_direct for the VFS directory
+ * cache entry @dp. @ppp will be filled with the page the return
+ * value resides in.
+ *
+ * Returns:
+ * The wanted direct on success, else a NULL pointer.
+ */
+static struct vxfs_direct *
+vxfs_find_entry(struct inode *ip, struct dentry *dp, struct page **ppp)
+{
+ u_long npages, page, nblocks, pblocks, block;
+ u_long bsize = ip->i_sb->s_blocksize;
+ const char *name = dp->d_name.name;
+ int namelen = dp->d_name.len;
+
+ npages = dir_pages(ip);
+ nblocks = dir_blocks(ip);
+ pblocks = VXFS_BLOCK_PER_PAGE(ip->i_sb);
+
+ for (page = 0; page < npages; page++) {
+ caddr_t kaddr;
+ struct page *pp;
+
+ pp = vxfs_get_page(ip->i_mapping, page);
+ if (IS_ERR(pp))
+ continue;
+ kaddr = (caddr_t)page_address(pp);
+
+ for (block = 0; block <= nblocks && block <= pblocks; block++) {
+ caddr_t baddr, limit;
+ struct vxfs_dirblk *dbp;
+ struct vxfs_direct *de;
+
+ baddr = kaddr + (block * bsize);
+ limit = baddr + bsize - VXFS_DIRLEN(1);
+
+ dbp = (struct vxfs_dirblk *)baddr;
+ de = (struct vxfs_direct *)(baddr + VXFS_DIRBLKOV(dbp));
+
+ for (; (caddr_t)de <= limit; de = vxfs_next_entry(de)) {
+ if (!de->d_reclen)
+ break;
+ if (!de->d_ino)
+ continue;
+ if (vxfs_match(namelen, name, de)) {
+ *ppp = pp;
+ return (de);
+ }
+ }
+ }
+ vxfs_put_page(pp);
+ }
+
+ return NULL;
+}
+
+/**
+ * vxfs_inode_by_name - find inode number for dentry
+ * @dip: directory to search in
+ * @dp: dentry we seach for
+ *
+ * Description:
+ * vxfs_inode_by_name finds out the inode number of
+ * the path component described by @dp in @dip.
+ *
+ * Returns:
+ * The wanted inode number on success, else Zero.
+ */
+static ino_t
+vxfs_inode_by_name(struct inode *dip, struct dentry *dp)
+{
+ struct vxfs_direct *de;
+ struct page *pp;
+ ino_t ino = 0;
+
+ de = vxfs_find_entry(dip, dp, &pp);
+ if (de) {
+ ino = de->d_ino;
+ kunmap(pp);
+ page_cache_release(pp);
+ }
+
+ return (ino);
+}
+
+/**
+ * vxfs_lookup - lookup pathname component
+ * @dip: dir in which we lookup
+ * @dp: dentry we lookup
+ * @nd: lookup nameidata
+ *
+ * Description:
+ * vxfs_lookup tries to lookup the pathname component described
+ * by @dp in @dip.
+ *
+ * Returns:
+ * A NULL-pointer on success, else an negative error code encoded
+ * in the return pointer.
+ */
+static struct dentry *
+vxfs_lookup(struct inode *dip, struct dentry *dp, struct nameidata *nd)
+{
+ struct inode *ip = NULL;
+ ino_t ino;
+
+ if (dp->d_name.len > VXFS_NAMELEN)
+ return ERR_PTR(-ENAMETOOLONG);
+
+ lock_kernel();
+ ino = vxfs_inode_by_name(dip, dp);
+ if (ino) {
+ ip = iget(dip->i_sb, ino);
+ if (!ip) {
+ unlock_kernel();
+ return ERR_PTR(-EACCES);
+ }
+ }
+ unlock_kernel();
+ d_add(dp, ip);
+ return NULL;
+}
+
+/**
+ * vxfs_readdir - read a directory
+ * @fp: the directory to read
+ * @retp: return buffer
+ * @filler: filldir callback
+ *
+ * Description:
+ * vxfs_readdir fills @retp with directory entries from @fp
+ * using the VFS supplied callback @filler.
+ *
+ * Returns:
+ * Zero.
+ */
+static int
+vxfs_readdir(struct file *fp, void *retp, filldir_t filler)
+{
+ struct inode *ip = fp->f_dentry->d_inode;
+ struct super_block *sbp = ip->i_sb;
+ u_long bsize = sbp->s_blocksize;
+ u_long page, npages, block, pblocks, nblocks, offset;
+ loff_t pos;
+
+ switch ((long)fp->f_pos) {
+ case 0:
+ if (filler(retp, ".", 1, fp->f_pos, ip->i_ino, DT_DIR) < 0)
+ goto out;
+ fp->f_pos++;
+ /* fallthrough */
+ case 1:
+ if (filler(retp, "..", 2, fp->f_pos, VXFS_INO(ip)->vii_dotdot, DT_DIR) < 0)
+ goto out;
+ fp->f_pos++;
+ /* fallthrough */
+ }
+
+ pos = fp->f_pos - 2;
+
+ if (pos > VXFS_DIRROUND(ip->i_size)) {
+ unlock_kernel();
+ return 0;
+ }
+
+ npages = dir_pages(ip);
+ nblocks = dir_blocks(ip);
+ pblocks = VXFS_BLOCK_PER_PAGE(sbp);
+
+ page = pos >> PAGE_CACHE_SHIFT;
+ offset = pos & ~PAGE_CACHE_MASK;
+ block = (u_long)(pos >> sbp->s_blocksize_bits) % pblocks;
+
+ for (; page < npages; page++, block = 0) {
+ caddr_t kaddr;
+ struct page *pp;
+
+ pp = vxfs_get_page(ip->i_mapping, page);
+ if (IS_ERR(pp))
+ continue;
+ kaddr = (caddr_t)page_address(pp);
+
+ for (; block <= nblocks && block <= pblocks; block++) {
+ caddr_t baddr, limit;
+ struct vxfs_dirblk *dbp;
+ struct vxfs_direct *de;
+
+ baddr = kaddr + (block * bsize);
+ limit = baddr + bsize - VXFS_DIRLEN(1);
+
+ dbp = (struct vxfs_dirblk *)baddr;
+ de = (struct vxfs_direct *)
+ (offset ?
+ (kaddr + offset) :
+ (baddr + VXFS_DIRBLKOV(dbp)));
+
+ for (; (caddr_t)de <= limit; de = vxfs_next_entry(de)) {
+ int over;
+
+ if (!de->d_reclen)
+ break;
+ if (!de->d_ino)
+ continue;
+
+ offset = (caddr_t)de - kaddr;
+ over = filler(retp, de->d_name, de->d_namelen,
+ ((page << PAGE_CACHE_SHIFT) | offset) + 2,
+ de->d_ino, DT_UNKNOWN);
+ if (over) {
+ vxfs_put_page(pp);
+ goto done;
+ }
+ }
+ offset = 0;
+ }
+ vxfs_put_page(pp);
+ offset = 0;
+ }
+
+done:
+ fp->f_pos = ((page << PAGE_CACHE_SHIFT) | offset) + 2;
+out:
+ unlock_kernel();
+ return 0;
+}
diff --git a/fs/freevxfs/vxfs_olt.c b/fs/freevxfs/vxfs_olt.c
new file mode 100644
index 0000000..7a204e3
--- /dev/null
+++ b/fs/freevxfs/vxfs_olt.c
@@ -0,0 +1,132 @@
+/*
+ * Copyright (c) 2000-2001 Christoph Hellwig.
+ * 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,
+ * without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL").
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ */
+
+/*
+ * Veritas filesystem driver - object location table support.
+ */
+#include <linux/fs.h>
+#include <linux/buffer_head.h>
+#include <linux/kernel.h>
+
+#include "vxfs.h"
+#include "vxfs_olt.h"
+
+
+static __inline__ void
+vxfs_get_fshead(struct vxfs_oltfshead *fshp, struct vxfs_sb_info *infp)
+{
+ if (infp->vsi_fshino)
+ BUG();
+ infp->vsi_fshino = fshp->olt_fsino[0];
+}
+
+static __inline__ void
+vxfs_get_ilist(struct vxfs_oltilist *ilistp, struct vxfs_sb_info *infp)
+{
+ if (infp->vsi_iext)
+ BUG();
+ infp->vsi_iext = ilistp->olt_iext[0];
+}
+
+static __inline__ u_long
+vxfs_oblock(struct super_block *sbp, daddr_t block, u_long bsize)
+{
+ if (sbp->s_blocksize % bsize)
+ BUG();
+ return (block * (sbp->s_blocksize / bsize));
+}
+
+
+/**
+ * vxfs_read_olt - read olt
+ * @sbp: superblock of the filesystem
+ * @bsize: blocksize of the filesystem
+ *
+ * Description:
+ * vxfs_read_olt reads the olt of the filesystem described by @sbp
+ * into main memory and does some basic setup.
+ *
+ * Returns:
+ * Zero on success, else a negative error code.
+ */
+int
+vxfs_read_olt(struct super_block *sbp, u_long bsize)
+{
+ struct vxfs_sb_info *infp = VXFS_SBI(sbp);
+ struct buffer_head *bp;
+ struct vxfs_olt *op;
+ char *oaddr, *eaddr;
+
+
+ bp = sb_bread(sbp, vxfs_oblock(sbp, infp->vsi_oltext, bsize));
+ if (!bp || !bp->b_data)
+ goto fail;
+
+ op = (struct vxfs_olt *)bp->b_data;
+ if (op->olt_magic != VXFS_OLT_MAGIC) {
+ printk(KERN_NOTICE "vxfs: ivalid olt magic number\n");
+ goto fail;
+ }
+
+ /*
+ * It is in theory possible that vsi_oltsize is > 1.
+ * I've not seen any such filesystem yet and I'm lazy.. --hch
+ */
+ if (infp->vsi_oltsize > 1) {
+ printk(KERN_NOTICE "vxfs: oltsize > 1 detected.\n");
+ printk(KERN_NOTICE "vxfs: please notify hch@infradead.org\n");
+ goto fail;
+ }
+
+ oaddr = (char *)bp->b_data + op->olt_size;
+ eaddr = (char *)bp->b_data + (infp->vsi_oltsize * sbp->s_blocksize);
+
+ while (oaddr < eaddr) {
+ struct vxfs_oltcommon *ocp =
+ (struct vxfs_oltcommon *)oaddr;
+
+ switch (ocp->olt_type) {
+ case VXFS_OLT_FSHEAD:
+ vxfs_get_fshead((struct vxfs_oltfshead *)oaddr, infp);
+ break;
+ case VXFS_OLT_ILIST:
+ vxfs_get_ilist((struct vxfs_oltilist *)oaddr, infp);
+ break;
+ }
+
+ oaddr += ocp->olt_size;
+ }
+
+ brelse(bp);
+ return 0;
+
+fail:
+ brelse(bp);
+ return -EINVAL;
+}
diff --git a/fs/freevxfs/vxfs_olt.h b/fs/freevxfs/vxfs_olt.h
new file mode 100644
index 0000000..d832429
--- /dev/null
+++ b/fs/freevxfs/vxfs_olt.h
@@ -0,0 +1,145 @@
+/*
+ * Copyright (c) 2000-2001 Christoph Hellwig.
+ * 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,
+ * without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL").
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ */
+#ifndef _VXFS_OLT_H_
+#define _VXFS_OLT_H_
+
+/*
+ * Veritas filesystem driver - Object Location Table data structures.
+ *
+ * This file contains definitions for the Object Location Table used
+ * by the Veritas Filesystem version 2 and newer.
+ */
+
+
+/*
+ * OLT magic number (vxfs_olt->olt_magic).
+ */
+#define VXFS_OLT_MAGIC 0xa504FCF5
+
+/*
+ * VxFS OLT entry types.
+ */
+enum {
+ VXFS_OLT_FREE = 1,
+ VXFS_OLT_FSHEAD = 2,
+ VXFS_OLT_CUT = 3,
+ VXFS_OLT_ILIST = 4,
+ VXFS_OLT_DEV = 5,
+ VXFS_OLT_SB = 6
+};
+
+/*
+ * VxFS OLT header.
+ *
+ * The Object Location Table header is placed at the beginning of each
+ * OLT extent. It is used to fing certain filesystem-wide metadata, e.g.
+ * the inital inode list, the fileset header or the device configuration.
+ */
+struct vxfs_olt {
+ u_int32_t olt_magic; /* magic number */
+ u_int32_t olt_size; /* size of this entry */
+ u_int32_t olt_checksum; /* checksum of extent */
+ u_int32_t __unused1; /* ??? */
+ u_int32_t olt_mtime; /* time of last mod. (sec) */
+ u_int32_t olt_mutime; /* time of last mod. (usec) */
+ u_int32_t olt_totfree; /* free space in OLT extent */
+ vx_daddr_t olt_extents[2]; /* addr of this extent, replica */
+ u_int32_t olt_esize; /* size of this extent */
+ vx_daddr_t olt_next[2]; /* addr of next extent, replica */
+ u_int32_t olt_nsize; /* size of next extent */
+ u_int32_t __unused2; /* align to 8 byte boundary */
+};
+
+/*
+ * VxFS common OLT entry (on disk).
+ */
+struct vxfs_oltcommon {
+ u_int32_t olt_type; /* type of this record */
+ u_int32_t olt_size; /* size of this record */
+};
+
+/*
+ * VxFS free OLT entry (on disk).
+ */
+struct vxfs_oltfree {
+ u_int32_t olt_type; /* type of this record */
+ u_int32_t olt_fsize; /* size of this free record */
+};
+
+/*
+ * VxFS initial-inode list (on disk).
+ */
+struct vxfs_oltilist {
+ u_int32_t olt_type; /* type of this record */
+ u_int32_t olt_size; /* size of this record */
+ vx_ino_t olt_iext[2]; /* initial inode list, replica */
+};
+
+/*
+ * Current Usage Table
+ */
+struct vxfs_oltcut {
+ u_int32_t olt_type; /* type of this record */
+ u_int32_t olt_size; /* size of this record */
+ vx_ino_t olt_cutino; /* inode of current usage table */
+ u_int32_t __pad; /* unused, 8 byte align */
+};
+
+/*
+ * Inodes containing Superblock, Intent log and OLTs
+ */
+struct vxfs_oltsb {
+ u_int32_t olt_type; /* type of this record */
+ u_int32_t olt_size; /* size of this record */
+ vx_ino_t olt_sbino; /* inode of superblock file */
+ u_int32_t __unused1; /* ??? */
+ vx_ino_t olt_logino[2]; /* inode of log file,replica */
+ vx_ino_t olt_oltino[2]; /* inode of OLT, replica */
+};
+
+/*
+ * Inode containing device configuration + it's replica
+ */
+struct vxfs_oltdev {
+ u_int32_t olt_type; /* type of this record */
+ u_int32_t olt_size; /* size of this record */
+ vx_ino_t olt_devino[2]; /* inode of device config files */
+};
+
+/*
+ * Fileset header
+ */
+struct vxfs_oltfshead {
+ u_int32_t olt_type; /* type number */
+ u_int32_t olt_size; /* size of this record */
+ vx_ino_t olt_fsino[2]; /* inodes of fileset header */
+};
+
+#endif /* _VXFS_OLT_H_ */
diff --git a/fs/freevxfs/vxfs_subr.c b/fs/freevxfs/vxfs_subr.c
new file mode 100644
index 0000000..5e30561
--- /dev/null
+++ b/fs/freevxfs/vxfs_subr.c
@@ -0,0 +1,190 @@
+/*
+ * Copyright (c) 2000-2001 Christoph Hellwig.
+ * 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,
+ * without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL").
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ */
+
+/*
+ * Veritas filesystem driver - shared subroutines.
+ */
+#include <linux/fs.h>
+#include <linux/buffer_head.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/pagemap.h>
+
+#include "vxfs_kcompat.h"
+#include "vxfs_extern.h"
+
+
+static int vxfs_readpage(struct file *, struct page *);
+static sector_t vxfs_bmap(struct address_space *, sector_t);
+
+struct address_space_operations vxfs_aops = {
+ .readpage = vxfs_readpage,
+ .bmap = vxfs_bmap,
+ .sync_page = block_sync_page,
+};
+
+inline void
+vxfs_put_page(struct page *pp)
+{
+ kunmap(pp);
+ page_cache_release(pp);
+}
+
+/**
+ * vxfs_get_page - read a page into memory.
+ * @ip: inode to read from
+ * @n: page number
+ *
+ * Description:
+ * vxfs_get_page reads the @n th page of @ip into the pagecache.
+ *
+ * Returns:
+ * The wanted page on success, else a NULL pointer.
+ */
+struct page *
+vxfs_get_page(struct address_space *mapping, u_long n)
+{
+ struct page * pp;
+
+ pp = read_cache_page(mapping, n,
+ (filler_t*)mapping->a_ops->readpage, NULL);
+
+ if (!IS_ERR(pp)) {
+ wait_on_page_locked(pp);
+ kmap(pp);
+ if (!PageUptodate(pp))
+ goto fail;
+ /** if (!PageChecked(pp)) **/
+ /** vxfs_check_page(pp); **/
+ if (PageError(pp))
+ goto fail;
+ }
+
+ return (pp);
+
+fail:
+ vxfs_put_page(pp);
+ return ERR_PTR(-EIO);
+}
+
+/**
+ * vxfs_bread - read buffer for a give inode,block tuple
+ * @ip: inode
+ * @block: logical block
+ *
+ * Description:
+ * The vxfs_bread function reads block no @block of
+ * @ip into the buffercache.
+ *
+ * Returns:
+ * The resulting &struct buffer_head.
+ */
+struct buffer_head *
+vxfs_bread(struct inode *ip, int block)
+{
+ struct buffer_head *bp;
+ daddr_t pblock;
+
+ pblock = vxfs_bmap1(ip, block);
+ bp = sb_bread(ip->i_sb, pblock);
+
+ return (bp);
+}
+
+/**
+ * vxfs_get_block - locate buffer for given inode,block tuple
+ * @ip: inode
+ * @iblock: logical block
+ * @bp: buffer skeleton
+ * @create: %TRUE if blocks may be newly allocated.
+ *
+ * Description:
+ * The vxfs_get_block function fills @bp with the right physical
+ * block and device number to perform a lowlevel read/write on
+ * it.
+ *
+ * Returns:
+ * Zero on success, else a negativ error code (-EIO).
+ */
+static int
+vxfs_getblk(struct inode *ip, sector_t iblock,
+ struct buffer_head *bp, int create)
+{
+ daddr_t pblock;
+
+ pblock = vxfs_bmap1(ip, iblock);
+ if (pblock != 0) {
+ map_bh(bp, ip->i_sb, pblock);
+ return 0;
+ }
+
+ return -EIO;
+}
+
+/**
+ * vxfs_readpage - read one page synchronously into the pagecache
+ * @file: file context (unused)
+ * @page: page frame to fill in.
+ *
+ * Description:
+ * The vxfs_readpage routine reads @page synchronously into the
+ * pagecache.
+ *
+ * Returns:
+ * Zero on success, else a negative error code.
+ *
+ * Locking status:
+ * @page is locked and will be unlocked.
+ */
+static int
+vxfs_readpage(struct file *file, struct page *page)
+{
+ return block_read_full_page(page, vxfs_getblk);
+}
+
+/**
+ * vxfs_bmap - perform logical to physical block mapping
+ * @mapping: logical to physical mapping to use
+ * @block: logical block (relative to @mapping).
+ *
+ * Description:
+ * Vxfs_bmap find out the corresponding phsical block to the
+ * @mapping, @block pair.
+ *
+ * Returns:
+ * Physical block number on success, else Zero.
+ *
+ * Locking status:
+ * We are under the bkl.
+ */
+static sector_t
+vxfs_bmap(struct address_space *mapping, sector_t block)
+{
+ return generic_block_bmap(mapping, block, vxfs_getblk);
+}
diff --git a/fs/freevxfs/vxfs_super.c b/fs/freevxfs/vxfs_super.c
new file mode 100644
index 0000000..0ae2c7b
--- /dev/null
+++ b/fs/freevxfs/vxfs_super.c
@@ -0,0 +1,278 @@
+/*
+ * Copyright (c) 2000-2001 Christoph Hellwig.
+ * 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,
+ * without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL").
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ */
+
+/*
+ * Veritas filesystem driver - superblock related routines.
+ */
+#include <linux/init.h>
+#include <linux/module.h>
+
+#include <linux/blkdev.h>
+#include <linux/fs.h>
+#include <linux/buffer_head.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/stat.h>
+#include <linux/vfs.h>
+
+#include "vxfs.h"
+#include "vxfs_extern.h"
+#include "vxfs_dir.h"
+#include "vxfs_inode.h"
+
+
+MODULE_AUTHOR("Christoph Hellwig");
+MODULE_DESCRIPTION("Veritas Filesystem (VxFS) driver");
+MODULE_LICENSE("Dual BSD/GPL");
+
+MODULE_ALIAS("vxfs"); /* makes mount -t vxfs autoload the module */
+
+
+static void vxfs_put_super(struct super_block *);
+static int vxfs_statfs(struct super_block *, struct kstatfs *);
+static int vxfs_remount(struct super_block *, int *, char *);
+
+static struct super_operations vxfs_super_ops = {
+ .read_inode = vxfs_read_inode,
+ .clear_inode = vxfs_clear_inode,
+ .put_super = vxfs_put_super,
+ .statfs = vxfs_statfs,
+ .remount_fs = vxfs_remount,
+};
+
+/**
+ * vxfs_put_super - free superblock resources
+ * @sbp: VFS superblock.
+ *
+ * Description:
+ * vxfs_put_super frees all resources allocated for @sbp
+ * after the last instance of the filesystem is unmounted.
+ */
+
+static void
+vxfs_put_super(struct super_block *sbp)
+{
+ struct vxfs_sb_info *infp = VXFS_SBI(sbp);
+
+ vxfs_put_fake_inode(infp->vsi_fship);
+ vxfs_put_fake_inode(infp->vsi_ilist);
+ vxfs_put_fake_inode(infp->vsi_stilist);
+
+ brelse(infp->vsi_bp);
+ kfree(infp);
+}
+
+/**
+ * vxfs_statfs - get filesystem information
+ * @sbp: VFS superblock
+ * @bufp: output buffer
+ *
+ * Description:
+ * vxfs_statfs fills the statfs buffer @bufp with information
+ * about the filesystem described by @sbp.
+ *
+ * Returns:
+ * Zero.
+ *
+ * Locking:
+ * No locks held.
+ *
+ * Notes:
+ * This is everything but complete...
+ */
+static int
+vxfs_statfs(struct super_block *sbp, struct kstatfs *bufp)
+{
+ struct vxfs_sb_info *infp = VXFS_SBI(sbp);
+
+ bufp->f_type = VXFS_SUPER_MAGIC;
+ bufp->f_bsize = sbp->s_blocksize;
+ bufp->f_blocks = infp->vsi_raw->vs_dsize;
+ bufp->f_bfree = infp->vsi_raw->vs_free;
+ bufp->f_bavail = 0;
+ bufp->f_files = 0;
+ bufp->f_ffree = infp->vsi_raw->vs_ifree;
+ bufp->f_namelen = VXFS_NAMELEN;
+
+ return 0;
+}
+
+static int vxfs_remount(struct super_block *sb, int *flags, char *data)
+{
+ *flags |= MS_RDONLY;
+ return 0;
+}
+
+/**
+ * vxfs_read_super - read superblock into memory and initalize filesystem
+ * @sbp: VFS superblock (to fill)
+ * @dp: fs private mount data
+ * @silent: do not complain loudly when sth is wrong
+ *
+ * Description:
+ * We are called on the first mount of a filesystem to read the
+ * superblock into memory and do some basic setup.
+ *
+ * Returns:
+ * The superblock on success, else %NULL.
+ *
+ * Locking:
+ * We are under the bkl and @sbp->s_lock.
+ */
+static int vxfs_fill_super(struct super_block *sbp, void *dp, int silent)
+{
+ struct vxfs_sb_info *infp;
+ struct vxfs_sb *rsbp;
+ struct buffer_head *bp = NULL;
+ u_long bsize;
+ struct inode *root;
+
+ sbp->s_flags |= MS_RDONLY;
+
+ infp = kmalloc(sizeof(*infp), GFP_KERNEL);
+ if (!infp) {
+ printk(KERN_WARNING "vxfs: unable to allocate incore superblock\n");
+ return -ENOMEM;
+ }
+ memset(infp, 0, sizeof(*infp));
+
+ bsize = sb_min_blocksize(sbp, BLOCK_SIZE);
+ if (!bsize) {
+ printk(KERN_WARNING "vxfs: unable to set blocksize\n");
+ goto out;
+ }
+
+ bp = sb_bread(sbp, 1);
+ if (!bp || !buffer_mapped(bp)) {
+ if (!silent) {
+ printk(KERN_WARNING
+ "vxfs: unable to read disk superblock\n");
+ }
+ goto out;
+ }
+
+ rsbp = (struct vxfs_sb *)bp->b_data;
+ if (rsbp->vs_magic != VXFS_SUPER_MAGIC) {
+ if (!silent)
+ printk(KERN_NOTICE "vxfs: WRONG superblock magic\n");
+ goto out;
+ }
+
+ if ((rsbp->vs_version < 2 || rsbp->vs_version > 4) && !silent) {
+ printk(KERN_NOTICE "vxfs: unsupported VxFS version (%d)\n",
+ rsbp->vs_version);
+ goto out;
+ }
+
+#ifdef DIAGNOSTIC
+ printk(KERN_DEBUG "vxfs: supported VxFS version (%d)\n", rsbp->vs_version);
+ printk(KERN_DEBUG "vxfs: blocksize: %d\n", rsbp->vs_bsize);
+#endif
+
+ sbp->s_magic = rsbp->vs_magic;
+ sbp->s_fs_info = (void *)infp;
+
+ infp->vsi_raw = rsbp;
+ infp->vsi_bp = bp;
+ infp->vsi_oltext = rsbp->vs_oltext[0];
+ infp->vsi_oltsize = rsbp->vs_oltsize;
+
+ if (!sb_set_blocksize(sbp, rsbp->vs_bsize)) {
+ printk(KERN_WARNING "vxfs: unable to set final block size\n");
+ goto out;
+ }
+
+ if (vxfs_read_olt(sbp, bsize)) {
+ printk(KERN_WARNING "vxfs: unable to read olt\n");
+ goto out;
+ }
+
+ if (vxfs_read_fshead(sbp)) {
+ printk(KERN_WARNING "vxfs: unable to read fshead\n");
+ goto out;
+ }
+
+ sbp->s_op = &vxfs_super_ops;
+ root = iget(sbp, VXFS_ROOT_INO);
+ sbp->s_root = d_alloc_root(root);
+ if (!sbp->s_root) {
+ iput(root);
+ printk(KERN_WARNING "vxfs: unable to get root dentry.\n");
+ goto out_free_ilist;
+ }
+
+ return 0;
+
+out_free_ilist:
+ vxfs_put_fake_inode(infp->vsi_fship);
+ vxfs_put_fake_inode(infp->vsi_ilist);
+ vxfs_put_fake_inode(infp->vsi_stilist);
+out:
+ brelse(bp);
+ kfree(infp);
+ return -EINVAL;
+}
+
+/*
+ * The usual module blurb.
+ */
+static struct super_block *vxfs_get_sb(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *data)
+{
+ return get_sb_bdev(fs_type, flags, dev_name, data, vxfs_fill_super);
+}
+
+static struct file_system_type vxfs_fs_type = {
+ .owner = THIS_MODULE,
+ .name = "vxfs",
+ .get_sb = vxfs_get_sb,
+ .kill_sb = kill_block_super,
+ .fs_flags = FS_REQUIRES_DEV,
+};
+
+static int __init
+vxfs_init(void)
+{
+ vxfs_inode_cachep = kmem_cache_create("vxfs_inode",
+ sizeof(struct vxfs_inode_info), 0,
+ SLAB_RECLAIM_ACCOUNT, NULL, NULL);
+ if (vxfs_inode_cachep)
+ return (register_filesystem(&vxfs_fs_type));
+ return -ENOMEM;
+}
+
+static void __exit
+vxfs_cleanup(void)
+{
+ unregister_filesystem(&vxfs_fs_type);
+ kmem_cache_destroy(vxfs_inode_cachep);
+}
+
+module_init(vxfs_init);
+module_exit(vxfs_cleanup);