Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 94 insertions, 0 deletions

diff --git a/fs/ocfs2/symlink.c b/fs/ocfs2/symlink.c
new file mode 100644
index 0000000000..d4c5fdcfa1
--- /dev/null
+++ b/fs/ocfs2/symlink.c
@@ -0,0 +1,94 @@
+/*
+ *  linux/cluster/ssi/cfs/symlink.c
+ *
+ *	This program 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 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, GOOD TITLE
+ *	or NON INFRINGEMENT.  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; if not, write to the Free Software
+ * 	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *	Questions/Comments/Bugfixes to ssic-linux-devel@lists.sourceforge.net
+ *
+ *  Copyright (C) 1992  Rick Sladkey
+ *
+ *  Optimization changes Copyright (C) 1994 Florian La Roche
+ *
+ *  Jun 7 1999, cache symlink lookups in the page cache.  -DaveM
+ *
+ *  Portions Copyright (C) 2001 Compaq Computer Corporation
+ *
+ *  ocfs2 symlink handling code.
+ *
+ *  Copyright (C) 2004, 2005 Oracle.
+ *
+ */
+
+#include <linux/fs.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/pagemap.h>
+#include <linux/namei.h>
+
+#include <cluster/masklog.h>
+
+#include "ocfs2.h"
+
+#include "alloc.h"
+#include "file.h"
+#include "inode.h"
+#include "journal.h"
+#include "symlink.h"
+#include "xattr.h"
+
+#include "buffer_head_io.h"
+
+
+static int ocfs2_fast_symlink_read_folio(struct file *f, struct folio *folio)
+{
+	struct page *page = &folio->page;
+	struct inode *inode = page->mapping->host;
+	struct buffer_head *bh = NULL;
+	int status = ocfs2_read_inode_block(inode, &bh);
+	struct ocfs2_dinode *fe;
+	const char *link;
+	void *kaddr;
+	size_t len;
+
+	if (status < 0) {
+		mlog_errno(status);
+		return status;
+	}
+
+	fe = (struct ocfs2_dinode *) bh->b_data;
+	link = (char *) fe->id2.i_symlink;
+	/* will be less than a page size */
+	len = strnlen(link, ocfs2_fast_symlink_chars(inode->i_sb));
+	kaddr = kmap_atomic(page);
+	memcpy(kaddr, link, len + 1);
+	kunmap_atomic(kaddr);
+	SetPageUptodate(page);
+	unlock_page(page);
+	brelse(bh);
+	return 0;
+}
+
+const struct address_space_operations ocfs2_fast_symlink_aops = {
+	.read_folio		= ocfs2_fast_symlink_read_folio,
+};
+
+const struct inode_operations ocfs2_symlink_inode_operations = {
+	.get_link	= page_get_link,
+	.getattr	= ocfs2_getattr,
+	.setattr	= ocfs2_setattr,
+	.listxattr	= ocfs2_listxattr,
+	.fiemap		= ocfs2_fiemap,
+};