Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 155 insertions, 0 deletions

diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c
new file mode 100644
index 000000000000..db8713ea0d27
--- /dev/null
+++ b/fs/ntfs/file.c
@@ -0,0 +1,155 @@
+/*
+ * file.c - NTFS kernel file operations. Part of the Linux-NTFS project.
+ *
+ * Copyright (c) 2001-2004 Anton Altaparmakov
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the Linux-NTFS
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/pagemap.h>
+#include <linux/buffer_head.h>
+
+#include "inode.h"
+#include "debug.h"
+#include "ntfs.h"
+
+/**
+ * ntfs_file_open - called when an inode is about to be opened
+ * @vi:         inode to be opened
+ * @filp:       file structure describing the inode
+ *
+ * Limit file size to the page cache limit on architectures where unsigned long
+ * is 32-bits. This is the most we can do for now without overflowing the page
+ * cache page index. Doing it this way means we don't run into problems because
+ * of existing too large files. It would be better to allow the user to read
+ * the beginning of the file but I doubt very much anyone is going to hit this
+ * check on a 32-bit architecture, so there is no point in adding the extra
+ * complexity required to support this.
+ *
+ * On 64-bit architectures, the check is hopefully optimized away by the
+ * compiler.
+ *
+ * After the check passes, just call generic_file_open() to do its work.
+ */
+static int ntfs_file_open(struct inode *vi, struct file *filp)
+{
+        if (sizeof(unsigned long) < 8) {
+                if (vi->i_size > MAX_LFS_FILESIZE)
+                        return -EFBIG;
+        }
+        return generic_file_open(vi, filp);
+}
+
+#ifdef NTFS_RW
+
+/**
+ * ntfs_file_fsync - sync a file to disk
+ * @filp:       file to be synced
+ * @dentry:     dentry describing the file to sync
+ * @datasync:   if non-zero only flush user data and not metadata
+ *
+ * Data integrity sync of a file to disk.  Used for fsync, fdatasync, and msync
+ * system calls.  This function is inspired by fs/buffer.c::file_fsync().
+ *
+ * If @datasync is false, write the mft record and all associated extent mft
+ * records as well as the $DATA attribute and then sync the block device.
+ *
+ * If @datasync is true and the attribute is non-resident, we skip the writing
+ * of the mft record and all associated extent mft records (this might still
+ * happen due to the write_inode_now() call).
+ *
+ * Also, if @datasync is true, we do not wait on the inode to be written out
+ * but we always wait on the page cache pages to be written out.
+ *
+ * Note: In the past @filp could be NULL so we ignore it as we don't need it
+ * anyway.
+ *
+ * Locking: Caller must hold i_sem on the inode.
+ *
+ * TODO: We should probably also write all attribute/index inodes associated
+ * with this inode but since we have no simple way of getting to them we ignore
+ * this problem for now.
+ */
+static int ntfs_file_fsync(struct file *filp, struct dentry *dentry,
+                int datasync)
+{
+        struct inode *vi = dentry->d_inode;
+        int err, ret = 0;
+
+        ntfs_debug("Entering for inode 0x%lx.", vi->i_ino);
+        BUG_ON(S_ISDIR(vi->i_mode));
+        if (!datasync || !NInoNonResident(NTFS_I(vi)))
+                ret = ntfs_write_inode(vi, 1);
+        write_inode_now(vi, !datasync);
+        err = sync_blockdev(vi->i_sb->s_bdev);
+        if (unlikely(err && !ret))
+                ret = err;
+        if (likely(!ret))
+                ntfs_debug("Done.");
+        else
+                ntfs_warning(vi->i_sb, "Failed to f%ssync inode 0x%lx.  Error "
+                                "%u.", datasync ? "data" : "", vi->i_ino, -ret);
+        return ret;
+}
+
+#endif /* NTFS_RW */
+
+struct file_operations ntfs_file_ops = {
+        .llseek         = generic_file_llseek,    /* Seek inside file. */
+        .read           = generic_file_read,      /* Read from file. */
+        .aio_read       = generic_file_aio_read,  /* Async read from file. */
+        .readv          = generic_file_readv,     /* Read from file. */
+#ifdef NTFS_RW
+        .write          = generic_file_write,     /* Write to file. */
+        .aio_write      = generic_file_aio_write, /* Async write to file. */
+        .writev         = generic_file_writev,    /* Write to file. */
+        /*.release      = ,*/                     /* Last file is closed.  See
+                                                     fs/ext2/file.c::
+                                                     ext2_release_file() for
+                                                     how to use this to discard
+                                                     preallocated space for
+                                                     write opened files. */
+        .fsync          = ntfs_file_fsync,        /* Sync a file to disk. */
+        /*.aio_fsync    = ,*/                     /* Sync all outstanding async
+                                                     i/o operations on a
+                                                     kiocb. */
+#endif /* NTFS_RW */
+        /*.ioctl        = ,*/                     /* Perform function on the
+                                                     mounted filesystem. */
+        .mmap           = generic_file_mmap,      /* Mmap file. */
+        .open           = ntfs_file_open,         /* Open file. */
+        .sendfile       = generic_file_sendfile,  /* Zero-copy data send with
+                                                     the data source being on
+                                                     the ntfs partition.  We
+                                                     do not need to care about
+                                                     the data destination. */
+        /*.sendpage     = ,*/                     /* Zero-copy data send with
+                                                     the data destination being
+                                                     on the ntfs partition.  We
+                                                     do not need to care about
+                                                     the data source. */
+};
+
+struct inode_operations ntfs_file_inode_ops = {
+#ifdef NTFS_RW
+        .truncate       = ntfs_truncate_vfs,
+        .setattr        = ntfs_setattr,
+#endif /* NTFS_RW */
+};
+
+struct file_operations ntfs_empty_file_ops = {};
+
+struct inode_operations ntfs_empty_inode_ops = {};