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/xfs/linux-2.6/xfs_file.c b/fs/xfs/linux-2.6/xfs_file.c
new file mode 100644
index 0000000..9f057a4
--- /dev/null
+++ b/fs/xfs/linux-2.6/xfs_file.c
@@ -0,0 +1,573 @@
+/*
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * Further, this software is distributed without any warranty that it is
+ * free of the rightful claim of any third person regarding infringement
+ * or the like. Any license provided herein, whether implied or
+ * otherwise, applies only to this software file. Patent licenses, if
+ * any, provided herein do not apply to combinations of this program with
+ * other software, or any other product whatsoever.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston MA 02111-1307, USA.
+ *
+ * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
+ * Mountain View, CA 94043, or:
+ *
+ * http://www.sgi.com
+ *
+ * For further information regarding this notice, see:
+ *
+ * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
+ */
+
+#include "xfs.h"
+#include "xfs_inum.h"
+#include "xfs_log.h"
+#include "xfs_sb.h"
+#include "xfs_dir.h"
+#include "xfs_dir2.h"
+#include "xfs_trans.h"
+#include "xfs_dmapi.h"
+#include "xfs_mount.h"
+#include "xfs_bmap_btree.h"
+#include "xfs_alloc_btree.h"
+#include "xfs_ialloc_btree.h"
+#include "xfs_alloc.h"
+#include "xfs_btree.h"
+#include "xfs_attr_sf.h"
+#include "xfs_dir_sf.h"
+#include "xfs_dir2_sf.h"
+#include "xfs_dinode.h"
+#include "xfs_inode.h"
+#include "xfs_error.h"
+#include "xfs_rw.h"
+#include "xfs_ioctl32.h"
+
+#include <linux/dcache.h>
+#include <linux/smp_lock.h>
+
+static struct vm_operations_struct linvfs_file_vm_ops;
+
+
+STATIC inline ssize_t
+__linvfs_read(
+ struct kiocb *iocb,
+ char __user *buf,
+ int ioflags,
+ size_t count,
+ loff_t pos)
+{
+ struct iovec iov = {buf, count};
+ struct file *file = iocb->ki_filp;
+ vnode_t *vp = LINVFS_GET_VP(file->f_dentry->d_inode);
+ ssize_t rval;
+
+ BUG_ON(iocb->ki_pos != pos);
+
+ if (unlikely(file->f_flags & O_DIRECT))
+ ioflags |= IO_ISDIRECT;
+ VOP_READ(vp, iocb, &iov, 1, &iocb->ki_pos, ioflags, NULL, rval);
+ return rval;
+}
+
+
+STATIC ssize_t
+linvfs_aio_read(
+ struct kiocb *iocb,
+ char __user *buf,
+ size_t count,
+ loff_t pos)
+{
+ return __linvfs_read(iocb, buf, IO_ISAIO, count, pos);
+}
+
+STATIC ssize_t
+linvfs_aio_read_invis(
+ struct kiocb *iocb,
+ char __user *buf,
+ size_t count,
+ loff_t pos)
+{
+ return __linvfs_read(iocb, buf, IO_ISAIO|IO_INVIS, count, pos);
+}
+
+
+STATIC inline ssize_t
+__linvfs_write(
+ struct kiocb *iocb,
+ const char __user *buf,
+ int ioflags,
+ size_t count,
+ loff_t pos)
+{
+ struct iovec iov = {(void __user *)buf, count};
+ struct file *file = iocb->ki_filp;
+ struct inode *inode = file->f_mapping->host;
+ vnode_t *vp = LINVFS_GET_VP(inode);
+ ssize_t rval;
+
+ BUG_ON(iocb->ki_pos != pos);
+ if (unlikely(file->f_flags & O_DIRECT))
+ ioflags |= IO_ISDIRECT;
+
+ VOP_WRITE(vp, iocb, &iov, 1, &iocb->ki_pos, ioflags, NULL, rval);
+ return rval;
+}
+
+
+STATIC ssize_t
+linvfs_aio_write(
+ struct kiocb *iocb,
+ const char __user *buf,
+ size_t count,
+ loff_t pos)
+{
+ return __linvfs_write(iocb, buf, IO_ISAIO, count, pos);
+}
+
+STATIC ssize_t
+linvfs_aio_write_invis(
+ struct kiocb *iocb,
+ const char __user *buf,
+ size_t count,
+ loff_t pos)
+{
+ return __linvfs_write(iocb, buf, IO_ISAIO|IO_INVIS, count, pos);
+}
+
+
+STATIC inline ssize_t
+__linvfs_readv(
+ struct file *file,
+ const struct iovec *iov,
+ int ioflags,
+ unsigned long nr_segs,
+ loff_t *ppos)
+{
+ struct inode *inode = file->f_mapping->host;
+ vnode_t *vp = LINVFS_GET_VP(inode);
+ struct kiocb kiocb;
+ ssize_t rval;
+
+ init_sync_kiocb(&kiocb, file);
+ kiocb.ki_pos = *ppos;
+
+ if (unlikely(file->f_flags & O_DIRECT))
+ ioflags |= IO_ISDIRECT;
+ VOP_READ(vp, &kiocb, iov, nr_segs, &kiocb.ki_pos, ioflags, NULL, rval);
+
+ *ppos = kiocb.ki_pos;
+ return rval;
+}
+
+STATIC ssize_t
+linvfs_readv(
+ struct file *file,
+ const struct iovec *iov,
+ unsigned long nr_segs,
+ loff_t *ppos)
+{
+ return __linvfs_readv(file, iov, 0, nr_segs, ppos);
+}
+
+STATIC ssize_t
+linvfs_readv_invis(
+ struct file *file,
+ const struct iovec *iov,
+ unsigned long nr_segs,
+ loff_t *ppos)
+{
+ return __linvfs_readv(file, iov, IO_INVIS, nr_segs, ppos);
+}
+
+
+STATIC inline ssize_t
+__linvfs_writev(
+ struct file *file,
+ const struct iovec *iov,
+ int ioflags,
+ unsigned long nr_segs,
+ loff_t *ppos)
+{
+ struct inode *inode = file->f_mapping->host;
+ vnode_t *vp = LINVFS_GET_VP(inode);
+ struct kiocb kiocb;
+ ssize_t rval;
+
+ init_sync_kiocb(&kiocb, file);
+ kiocb.ki_pos = *ppos;
+ if (unlikely(file->f_flags & O_DIRECT))
+ ioflags |= IO_ISDIRECT;
+
+ VOP_WRITE(vp, &kiocb, iov, nr_segs, &kiocb.ki_pos, ioflags, NULL, rval);
+
+ *ppos = kiocb.ki_pos;
+ return rval;
+}
+
+
+STATIC ssize_t
+linvfs_writev(
+ struct file *file,
+ const struct iovec *iov,
+ unsigned long nr_segs,
+ loff_t *ppos)
+{
+ return __linvfs_writev(file, iov, 0, nr_segs, ppos);
+}
+
+STATIC ssize_t
+linvfs_writev_invis(
+ struct file *file,
+ const struct iovec *iov,
+ unsigned long nr_segs,
+ loff_t *ppos)
+{
+ return __linvfs_writev(file, iov, IO_INVIS, nr_segs, ppos);
+}
+
+STATIC ssize_t
+linvfs_sendfile(
+ struct file *filp,
+ loff_t *ppos,
+ size_t count,
+ read_actor_t actor,
+ void *target)
+{
+ vnode_t *vp = LINVFS_GET_VP(filp->f_dentry->d_inode);
+ ssize_t rval;
+
+ VOP_SENDFILE(vp, filp, ppos, 0, count, actor, target, NULL, rval);
+ return rval;
+}
+
+
+STATIC int
+linvfs_open(
+ struct inode *inode,
+ struct file *filp)
+{
+ vnode_t *vp = LINVFS_GET_VP(inode);
+ int error;
+
+ if (!(filp->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS)
+ return -EFBIG;
+
+ ASSERT(vp);
+ VOP_OPEN(vp, NULL, error);
+ return -error;
+}
+
+
+STATIC int
+linvfs_release(
+ struct inode *inode,
+ struct file *filp)
+{
+ vnode_t *vp = LINVFS_GET_VP(inode);
+ int error = 0;
+
+ if (vp)
+ VOP_RELEASE(vp, error);
+ return -error;
+}
+
+
+STATIC int
+linvfs_fsync(
+ struct file *filp,
+ struct dentry *dentry,
+ int datasync)
+{
+ struct inode *inode = dentry->d_inode;
+ vnode_t *vp = LINVFS_GET_VP(inode);
+ int error;
+ int flags = FSYNC_WAIT;
+
+ if (datasync)
+ flags |= FSYNC_DATA;
+
+ ASSERT(vp);
+ VOP_FSYNC(vp, flags, NULL, (xfs_off_t)0, (xfs_off_t)-1, error);
+ return -error;
+}
+
+/*
+ * linvfs_readdir maps to VOP_READDIR().
+ * We need to build a uio, cred, ...
+ */
+
+#define nextdp(dp) ((struct xfs_dirent *)((char *)(dp) + (dp)->d_reclen))
+
+STATIC int
+linvfs_readdir(
+ struct file *filp,
+ void *dirent,
+ filldir_t filldir)
+{
+ int error = 0;
+ vnode_t *vp;
+ uio_t uio;
+ iovec_t iov;
+ int eof = 0;
+ caddr_t read_buf;
+ int namelen, size = 0;
+ size_t rlen = PAGE_CACHE_SIZE;
+ xfs_off_t start_offset, curr_offset;
+ xfs_dirent_t *dbp = NULL;
+
+ vp = LINVFS_GET_VP(filp->f_dentry->d_inode);
+ ASSERT(vp);
+
+ /* Try fairly hard to get memory */
+ do {
+ if ((read_buf = (caddr_t)kmalloc(rlen, GFP_KERNEL)))
+ break;
+ rlen >>= 1;
+ } while (rlen >= 1024);
+
+ if (read_buf == NULL)
+ return -ENOMEM;
+
+ uio.uio_iov = &iov;
+ uio.uio_segflg = UIO_SYSSPACE;
+ curr_offset = filp->f_pos;
+ if (filp->f_pos != 0x7fffffff)
+ uio.uio_offset = filp->f_pos;
+ else
+ uio.uio_offset = 0xffffffff;
+
+ while (!eof) {
+ uio.uio_resid = iov.iov_len = rlen;
+ iov.iov_base = read_buf;
+ uio.uio_iovcnt = 1;
+
+ start_offset = uio.uio_offset;
+
+ VOP_READDIR(vp, &uio, NULL, &eof, error);
+ if ((uio.uio_offset == start_offset) || error) {
+ size = 0;
+ break;
+ }
+
+ size = rlen - uio.uio_resid;
+ dbp = (xfs_dirent_t *)read_buf;
+ while (size > 0) {
+ namelen = strlen(dbp->d_name);
+
+ if (filldir(dirent, dbp->d_name, namelen,
+ (loff_t) curr_offset & 0x7fffffff,
+ (ino_t) dbp->d_ino,
+ DT_UNKNOWN)) {
+ goto done;
+ }
+ size -= dbp->d_reclen;
+ curr_offset = (loff_t)dbp->d_off /* & 0x7fffffff */;
+ dbp = nextdp(dbp);
+ }
+ }
+done:
+ if (!error) {
+ if (size == 0)
+ filp->f_pos = uio.uio_offset & 0x7fffffff;
+ else if (dbp)
+ filp->f_pos = curr_offset;
+ }
+
+ kfree(read_buf);
+ return -error;
+}
+
+
+STATIC int
+linvfs_file_mmap(
+ struct file *filp,
+ struct vm_area_struct *vma)
+{
+ struct inode *ip = filp->f_dentry->d_inode;
+ vnode_t *vp = LINVFS_GET_VP(ip);
+ vattr_t va = { .va_mask = XFS_AT_UPDATIME };
+ int error;
+
+ if (vp->v_vfsp->vfs_flag & VFS_DMI) {
+ xfs_mount_t *mp = XFS_VFSTOM(vp->v_vfsp);
+
+ error = -XFS_SEND_MMAP(mp, vma, 0);
+ if (error)
+ return error;
+ }
+
+ vma->vm_ops = &linvfs_file_vm_ops;
+
+ VOP_SETATTR(vp, &va, XFS_AT_UPDATIME, NULL, error);
+ if (!error)
+ vn_revalidate(vp); /* update Linux inode flags */
+ return 0;
+}
+
+
+STATIC long
+linvfs_ioctl(
+ struct file *filp,
+ unsigned int cmd,
+ unsigned long arg)
+{
+ int error;
+ struct inode *inode = filp->f_dentry->d_inode;
+ vnode_t *vp = LINVFS_GET_VP(inode);
+
+ VOP_IOCTL(vp, inode, filp, 0, cmd, (void __user *)arg, error);
+ VMODIFY(vp);
+
+ /* NOTE: some of the ioctl's return positive #'s as a
+ * byte count indicating success, such as
+ * readlink_by_handle. So we don't "sign flip"
+ * like most other routines. This means true
+ * errors need to be returned as a negative value.
+ */
+ return error;
+}
+
+STATIC long
+linvfs_ioctl_invis(
+ struct file *filp,
+ unsigned int cmd,
+ unsigned long arg)
+{
+ int error;
+ struct inode *inode = filp->f_dentry->d_inode;
+ vnode_t *vp = LINVFS_GET_VP(inode);
+
+ ASSERT(vp);
+ VOP_IOCTL(vp, inode, filp, IO_INVIS, cmd, (void __user *)arg, error);
+ VMODIFY(vp);
+
+ /* NOTE: some of the ioctl's return positive #'s as a
+ * byte count indicating success, such as
+ * readlink_by_handle. So we don't "sign flip"
+ * like most other routines. This means true
+ * errors need to be returned as a negative value.
+ */
+ return error;
+}
+
+#ifdef HAVE_VMOP_MPROTECT
+STATIC int
+linvfs_mprotect(
+ struct vm_area_struct *vma,
+ unsigned int newflags)
+{
+ vnode_t *vp = LINVFS_GET_VP(vma->vm_file->f_dentry->d_inode);
+ int error = 0;
+
+ if (vp->v_vfsp->vfs_flag & VFS_DMI) {
+ if ((vma->vm_flags & VM_MAYSHARE) &&
+ (newflags & VM_WRITE) && !(vma->vm_flags & VM_WRITE)) {
+ xfs_mount_t *mp = XFS_VFSTOM(vp->v_vfsp);
+
+ error = XFS_SEND_MMAP(mp, vma, VM_WRITE);
+ }
+ }
+ return error;
+}
+#endif /* HAVE_VMOP_MPROTECT */
+
+#ifdef HAVE_FOP_OPEN_EXEC
+/* If the user is attempting to execute a file that is offline then
+ * we have to trigger a DMAPI READ event before the file is marked as busy
+ * otherwise the invisible I/O will not be able to write to the file to bring
+ * it back online.
+ */
+STATIC int
+linvfs_open_exec(
+ struct inode *inode)
+{
+ vnode_t *vp = LINVFS_GET_VP(inode);
+ xfs_mount_t *mp = XFS_VFSTOM(vp->v_vfsp);
+ int error = 0;
+ bhv_desc_t *bdp;
+ xfs_inode_t *ip;
+
+ if (vp->v_vfsp->vfs_flag & VFS_DMI) {
+ bdp = vn_bhv_lookup(VN_BHV_HEAD(vp), &xfs_vnodeops);
+ if (!bdp) {
+ error = -EINVAL;
+ goto open_exec_out;
+ }
+ ip = XFS_BHVTOI(bdp);
+ if (DM_EVENT_ENABLED(vp->v_vfsp, ip, DM_EVENT_READ)) {
+ error = -XFS_SEND_DATA(mp, DM_EVENT_READ, vp,
+ 0, 0, 0, NULL);
+ }
+ }
+open_exec_out:
+ return error;
+}
+#endif /* HAVE_FOP_OPEN_EXEC */
+
+struct file_operations linvfs_file_operations = {
+ .llseek = generic_file_llseek,
+ .read = do_sync_read,
+ .write = do_sync_write,
+ .readv = linvfs_readv,
+ .writev = linvfs_writev,
+ .aio_read = linvfs_aio_read,
+ .aio_write = linvfs_aio_write,
+ .sendfile = linvfs_sendfile,
+ .unlocked_ioctl = linvfs_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = xfs_compat_ioctl,
+#endif
+ .mmap = linvfs_file_mmap,
+ .open = linvfs_open,
+ .release = linvfs_release,
+ .fsync = linvfs_fsync,
+#ifdef HAVE_FOP_OPEN_EXEC
+ .open_exec = linvfs_open_exec,
+#endif
+};
+
+struct file_operations linvfs_invis_file_operations = {
+ .llseek = generic_file_llseek,
+ .read = do_sync_read,
+ .write = do_sync_write,
+ .readv = linvfs_readv_invis,
+ .writev = linvfs_writev_invis,
+ .aio_read = linvfs_aio_read_invis,
+ .aio_write = linvfs_aio_write_invis,
+ .sendfile = linvfs_sendfile,
+ .unlocked_ioctl = linvfs_ioctl_invis,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = xfs_compat_invis_ioctl,
+#endif
+ .mmap = linvfs_file_mmap,
+ .open = linvfs_open,
+ .release = linvfs_release,
+ .fsync = linvfs_fsync,
+};
+
+
+struct file_operations linvfs_dir_operations = {
+ .read = generic_read_dir,
+ .readdir = linvfs_readdir,
+ .unlocked_ioctl = linvfs_ioctl,
+ .fsync = linvfs_fsync,
+};
+
+static struct vm_operations_struct linvfs_file_vm_ops = {
+ .nopage = filemap_nopage,
+ .populate = filemap_populate,
+#ifdef HAVE_VMOP_MPROTECT
+ .mprotect = linvfs_mprotect,
+#endif
+};