X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Fxfs%2Flinux-2.6%2Fxfs_iops.c;h=215158cbac439a901505fc36071bf5dc893a8660;hb=3937be5ba836a204d3d1df96b518eecd6cdacbb9;hp=37e116779eb187945edba30b9322b9b708518b5a;hpb=cfad589f565bdaa69d45fb1c0db124727a6eaf6e;p=pandora-kernel.git

diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index 37e116779eb1..215158cbac43 100644
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -52,6 +52,7 @@
 #include <linux/xattr.h>
 #include <linux/namei.h>
 #include <linux/security.h>
+#include <linux/falloc.h>
 
 /*
  * Bring the atime in the XFS inode uptodate.
@@ -70,6 +71,22 @@ xfs_synchronize_atime(
 	}
 }
 
+/*
+ * If the linux inode exists, mark it dirty.
+ * Used when commiting a dirty inode into a transaction so that
+ * the inode will get written back by the linux code
+ */
+void
+xfs_mark_inode_dirty_sync(
+	xfs_inode_t	*ip)
+{
+	bhv_vnode_t	*vp;
+
+	vp = XFS_ITOV_NULL(ip);
+	if (vp)
+		mark_inode_dirty_sync(vn_to_inode(vp));
+}
+
 /*
  * Change the requested timestamp in the given inode.
  * We don't lock across timestamp updates, and we don't log them but
@@ -184,10 +201,6 @@ xfs_validate_fields(
 	struct xfs_inode	*ip = XFS_I(inode);
 	loff_t size;
 
-	inode->i_nlink = ip->i_d.di_nlink;
-	inode->i_blocks =
-		XFS_FSB_TO_BB(ip->i_mount, ip->i_d.di_nblocks +
-					   ip->i_delayed_blks);
 	/* we're under i_sem so i_size can't change under us */
 	size = XFS_ISIZE(ip);
 	if (i_size_read(inode) != size)
@@ -228,18 +241,6 @@ xfs_init_security(
 	return error;
 }
 
-/*
- * Determine whether a process has a valid fs_struct (kernel daemons
- * like knfsd don't have an fs_struct).
- *
- * XXX(hch):  nfsd is broken, better fix it instead.
- */
-STATIC_INLINE int
-xfs_has_fs_struct(struct task_struct *task)
-{
-	return (task->fs != init_task.fs);
-}
-
 STATIC void
 xfs_cleanup_inode(
 	struct inode	*dir,
@@ -271,8 +272,8 @@ xfs_vn_mknod(
 	int		mode,
 	dev_t		rdev)
 {
-	struct inode	*ip;
-	bhv_vnode_t	*vp = NULL, *dvp = vn_from_inode(dir);
+	struct inode	*inode;
+	struct xfs_inode *ip = NULL;
 	xfs_acl_t	*default_acl = NULL;
 	attrexists_t	test_default_acl = _ACL_DEFAULT_EXISTS;
 	int		error;
@@ -284,61 +285,65 @@ xfs_vn_mknod(
 	if (unlikely(!sysv_valid_dev(rdev) || MAJOR(rdev) & ~0x1ff))
 		return -EINVAL;
 
-	if (unlikely(test_default_acl && test_default_acl(dvp))) {
+	if (test_default_acl && test_default_acl(dir)) {
 		if (!_ACL_ALLOC(default_acl)) {
 			return -ENOMEM;
 		}
-		if (!_ACL_GET_DEFAULT(dvp, default_acl)) {
+		if (!_ACL_GET_DEFAULT(dir, default_acl)) {
 			_ACL_FREE(default_acl);
 			default_acl = NULL;
 		}
 	}
 
-	if (IS_POSIXACL(dir) && !default_acl && xfs_has_fs_struct(current))
+	if (IS_POSIXACL(dir) && !default_acl)
 		mode &= ~current->fs->umask;
 
 	switch (mode & S_IFMT) {
-	case S_IFCHR: case S_IFBLK: case S_IFIFO: case S_IFSOCK:
+	case S_IFCHR:
+	case S_IFBLK:
+	case S_IFIFO:
+	case S_IFSOCK:
 		rdev = sysv_encode_dev(rdev);
 	case S_IFREG:
-		error = xfs_create(XFS_I(dir), dentry, mode, rdev, &vp, NULL);
+		error = xfs_create(XFS_I(dir), dentry, mode, rdev, &ip, NULL);
 		break;
 	case S_IFDIR:
-		error = xfs_mkdir(XFS_I(dir), dentry, mode, &vp, NULL);
+		error = xfs_mkdir(XFS_I(dir), dentry, mode, &ip, NULL);
 		break;
 	default:
 		error = EINVAL;
 		break;
 	}
 
-	if (unlikely(!error)) {
-		error = xfs_init_security(vp, dir);
-		if (error)
-			xfs_cleanup_inode(dir, vp, dentry, mode);
-	}
+	if (unlikely(error))
+		goto out_free_acl;
 
-	if (unlikely(default_acl)) {
-		if (!error) {
-			error = _ACL_INHERIT(vp, mode, default_acl);
-			if (!error)
-				xfs_iflags_set(XFS_I(vp), XFS_IMODIFIED);
-			else
-				xfs_cleanup_inode(dir, vp, dentry, mode);
-		}
+	inode = ip->i_vnode;
+
+	error = xfs_init_security(inode, dir);
+	if (unlikely(error))
+		goto out_cleanup_inode;
+
+	if (default_acl) {
+		error = _ACL_INHERIT(inode, mode, default_acl);
+		if (unlikely(error))
+			goto out_cleanup_inode;
+		xfs_iflags_set(ip, XFS_IMODIFIED);
 		_ACL_FREE(default_acl);
 	}
 
-	if (likely(!error)) {
-		ASSERT(vp);
-		ip = vn_to_inode(vp);
-
-		if (S_ISCHR(mode) || S_ISBLK(mode))
-			ip->i_rdev = rdev;
-		else if (S_ISDIR(mode))
-			xfs_validate_fields(ip);
-		d_instantiate(dentry, ip);
-		xfs_validate_fields(dir);
-	}
+
+	if (S_ISDIR(mode))
+		xfs_validate_fields(inode);
+	d_instantiate(dentry, inode);
+	xfs_validate_fields(dir);
+	return -error;
+
+ out_cleanup_inode:
+	xfs_cleanup_inode(dir, inode, dentry, mode);
+ out_free_acl:
+	if (default_acl)
+		_ACL_FREE(default_acl);
 	return -error;
 }
 
@@ -390,23 +395,22 @@ xfs_vn_link(
 	struct inode	*dir,
 	struct dentry	*dentry)
 {
-	struct inode	*ip;	/* inode of guy being linked to */
-	bhv_vnode_t	*vp;	/* vp of name being linked */
+	struct inode	*inode;	/* inode of guy being linked to */
 	int		error;
 
-	ip = old_dentry->d_inode;	/* inode being linked to */
-	vp = vn_from_inode(ip);
+	inode = old_dentry->d_inode;
 
-	VN_HOLD(vp);
-	error = xfs_link(XFS_I(dir), vp, dentry);
+	igrab(inode);
+	error = xfs_link(XFS_I(dir), XFS_I(inode), dentry);
 	if (unlikely(error)) {
-		VN_RELE(vp);
-	} else {
-		xfs_iflags_set(XFS_I(dir), XFS_IMODIFIED);
-		xfs_validate_fields(ip);
-		d_instantiate(dentry, ip);
+		iput(inode);
+		return -error;
 	}
-	return -error;
+
+	xfs_iflags_set(XFS_I(dir), XFS_IMODIFIED);
+	xfs_validate_fields(inode);
+	d_instantiate(dentry, inode);
+	return 0;
 }
 
 STATIC int
@@ -433,29 +437,33 @@ xfs_vn_symlink(
 	struct dentry	*dentry,
 	const char	*symname)
 {
-	struct inode	*ip;
-	bhv_vnode_t	*cvp;	/* used to lookup symlink to put in dentry */
+	struct inode	*inode;
+	struct xfs_inode *cip = NULL;
 	int		error;
 	mode_t		mode;
 
-	cvp = NULL;
-
 	mode = S_IFLNK |
 		(irix_symlink_mode ? 0777 & ~current->fs->umask : S_IRWXUGO);
 
 	error = xfs_symlink(XFS_I(dir), dentry, (char *)symname, mode,
-			    &cvp, NULL);
-	if (likely(!error && cvp)) {
-		error = xfs_init_security(cvp, dir);
-		if (likely(!error)) {
-			ip = vn_to_inode(cvp);
-			d_instantiate(dentry, ip);
-			xfs_validate_fields(dir);
-			xfs_validate_fields(ip);
-		} else {
-			xfs_cleanup_inode(dir, cvp, dentry, 0);
-		}
-	}
+			    &cip, NULL);
+	if (unlikely(error))
+		goto out;
+
+	inode = cip->i_vnode;
+
+	error = xfs_init_security(inode, dir);
+	if (unlikely(error))
+		goto out_cleanup_inode;
+
+	d_instantiate(dentry, inode);
+	xfs_validate_fields(dir);
+	xfs_validate_fields(inode);
+	return 0;
+
+ out_cleanup_inode:
+	xfs_cleanup_inode(dir, inode, dentry, 0);
+ out:
 	return -error;
 }
 
@@ -483,12 +491,9 @@ xfs_vn_rename(
 	struct dentry	*ndentry)
 {
 	struct inode	*new_inode = ndentry->d_inode;
-	bhv_vnode_t	*tvp;	/* target directory */
 	int		error;
 
-	tvp = vn_from_inode(ndir);
-
-	error = xfs_rename(XFS_I(odir), odentry, tvp, ndentry);
+	error = xfs_rename(XFS_I(odir), odentry, XFS_I(ndir), ndentry);
 	if (likely(!error)) {
 		if (new_inode)
 			xfs_validate_fields(new_inode);
@@ -543,13 +548,32 @@ xfs_vn_put_link(
 }
 
 #ifdef CONFIG_XFS_POSIX_ACL
+STATIC int
+xfs_check_acl(
+	struct inode		*inode,
+	int			mask)
+{
+	struct xfs_inode	*ip = XFS_I(inode);
+	int			error;
+
+	xfs_itrace_entry(ip);
+
+	if (XFS_IFORK_Q(ip)) {
+		error = xfs_acl_iaccess(ip, mask, NULL);
+		if (error != -1)
+			return -error;
+	}
+
+	return -EAGAIN;
+}
+
 STATIC int
 xfs_vn_permission(
-	struct inode	*inode,
-	int		mode,
-	struct nameidata *nd)
+	struct inode		*inode,
+	int			mask,
+	struct nameidata	*nd)
 {
-	return -xfs_access(XFS_I(inode), mode << 6, NULL);
+	return generic_permission(inode, mask, xfs_check_acl);
 }
 #else
 #define xfs_vn_permission NULL
@@ -557,33 +581,61 @@ xfs_vn_permission(
 
 STATIC int
 xfs_vn_getattr(
-	struct vfsmount	*mnt,
-	struct dentry	*dentry,
-	struct kstat	*stat)
+	struct vfsmount		*mnt,
+	struct dentry		*dentry,
+	struct kstat		*stat)
 {
-	struct inode	*inode = dentry->d_inode;
-	bhv_vattr_t	vattr = { .va_mask = XFS_AT_STAT };
-	int		error;
-
-	error = xfs_getattr(XFS_I(inode), &vattr, ATTR_LAZY);
-	if (likely(!error)) {
-		stat->size = i_size_read(inode);
-		stat->dev = inode->i_sb->s_dev;
-		stat->rdev = (vattr.va_rdev == 0) ? 0 :
-				MKDEV(sysv_major(vattr.va_rdev) & 0x1ff,
-				      sysv_minor(vattr.va_rdev));
-		stat->mode = vattr.va_mode;
-		stat->nlink = vattr.va_nlink;
-		stat->uid = vattr.va_uid;
-		stat->gid = vattr.va_gid;
-		stat->ino = vattr.va_nodeid;
-		stat->atime = vattr.va_atime;
-		stat->mtime = vattr.va_mtime;
-		stat->ctime = vattr.va_ctime;
-		stat->blocks = vattr.va_nblocks;
-		stat->blksize = vattr.va_blocksize;
+	struct inode		*inode = dentry->d_inode;
+	struct xfs_inode	*ip = XFS_I(inode);
+	struct xfs_mount	*mp = ip->i_mount;
+
+	xfs_itrace_entry(ip);
+
+	if (XFS_FORCED_SHUTDOWN(mp))
+		return XFS_ERROR(EIO);
+
+	stat->size = XFS_ISIZE(ip);
+	stat->dev = inode->i_sb->s_dev;
+	stat->mode = ip->i_d.di_mode;
+	stat->nlink = ip->i_d.di_nlink;
+	stat->uid = ip->i_d.di_uid;
+	stat->gid = ip->i_d.di_gid;
+	stat->ino = ip->i_ino;
+#if XFS_BIG_INUMS
+	stat->ino += mp->m_inoadd;
+#endif
+	stat->atime = inode->i_atime;
+	stat->mtime.tv_sec = ip->i_d.di_mtime.t_sec;
+	stat->mtime.tv_nsec = ip->i_d.di_mtime.t_nsec;
+	stat->ctime.tv_sec = ip->i_d.di_ctime.t_sec;
+	stat->ctime.tv_nsec = ip->i_d.di_ctime.t_nsec;
+	stat->blocks =
+		XFS_FSB_TO_BB(mp, ip->i_d.di_nblocks + ip->i_delayed_blks);
+
+
+	switch (inode->i_mode & S_IFMT) {
+	case S_IFBLK:
+	case S_IFCHR:
+		stat->blksize = BLKDEV_IOSIZE;
+		stat->rdev = MKDEV(sysv_major(ip->i_df.if_u2.if_rdev) & 0x1ff,
+				   sysv_minor(ip->i_df.if_u2.if_rdev));
+		break;
+	default:
+		if (XFS_IS_REALTIME_INODE(ip)) {
+			/*
+			 * If the file blocks are being allocated from a
+			 * realtime volume, then return the inode's realtime
+			 * extent size or the realtime volume's extent size.
+			 */
+			stat->blksize =
+				xfs_get_extsz_hint(ip) << mp->m_sb.sb_blocklog;
+		} else
+			stat->blksize = xfs_preferred_iosize(mp);
+		stat->rdev = 0;
+		break;
 	}
-	return -error;
+
+	return 0;
 }
 
 STATIC int
@@ -638,7 +690,7 @@ xfs_vn_setattr(
 
 	error = xfs_setattr(XFS_I(inode), &vattr, flags, NULL);
 	if (likely(!error))
-		__vn_revalidate(vn_from_inode(inode), &vattr);
+		vn_revalidate(vn_from_inode(inode));
 	return -error;
 }
 
@@ -752,6 +804,47 @@ xfs_vn_removexattr(
 	return namesp->attr_remove(vp, attr, xflags);
 }
 
+STATIC long
+xfs_vn_fallocate(
+	struct inode	*inode,
+	int		mode,
+	loff_t		offset,
+	loff_t		len)
+{
+	long		error;
+	loff_t		new_size = 0;
+	xfs_flock64_t	bf;
+	xfs_inode_t	*ip = XFS_I(inode);
+
+	/* preallocation on directories not yet supported */
+	error = -ENODEV;
+	if (S_ISDIR(inode->i_mode))
+		goto out_error;
+
+	bf.l_whence = 0;
+	bf.l_start = offset;
+	bf.l_len = len;
+
+	xfs_ilock(ip, XFS_IOLOCK_EXCL);
+	error = xfs_change_file_space(ip, XFS_IOC_RESVSP, &bf,
+						0, NULL, ATTR_NOLOCK);
+	if (!error && !(mode & FALLOC_FL_KEEP_SIZE) &&
+	    offset + len > i_size_read(inode))
+		new_size = offset + len;
+
+	/* Change file size if needed */
+	if (new_size) {
+		bhv_vattr_t	va;
+
+		va.va_mask = XFS_AT_SIZE;
+		va.va_size = new_size;
+		error = xfs_setattr(ip, &va, ATTR_NOLOCK, NULL);
+	}
+
+	xfs_iunlock(ip, XFS_IOLOCK_EXCL);
+out_error:
+	return error;
+}
 
 const struct inode_operations xfs_inode_operations = {
 	.permission		= xfs_vn_permission,
@@ -762,6 +855,7 @@ const struct inode_operations xfs_inode_operations = {
 	.getxattr		= xfs_vn_getxattr,
 	.listxattr		= xfs_vn_listxattr,
 	.removexattr		= xfs_vn_removexattr,
+	.fallocate		= xfs_vn_fallocate,
 };
 
 const struct inode_operations xfs_dir_inode_operations = {