Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6: (292 commits)
  [GFS2] Fix endian bug for de_type
  [GFS2] Initialize SELinux extended attributes at inode creation time.
  [GFS2] Move logging code into log.c (mostly)
  [GFS2] Mark nlink cleared so VFS sees it happen
  [GFS2] Two redundant casts removed
  [GFS2] Remove uneeded endian conversion
  [GFS2] Remove duplicate sb reading code
  [GFS2] Mark metadata reads for blktrace
  [GFS2] Remove iflags.h, use FS_
  [GFS2] Fix code style/indent in ops_file.c
  [GFS2] streamline-generic_file_-interfaces-and-filemap gfs fix
  [GFS2] Remove readv/writev methods and use aio_read/aio_write instead (gfs bits)
  [GFS2] inode-diet: Eliminate i_blksize from the inode structure
  [GFS2] inode_diet: Replace inode.u.generic_ip with inode.i_private (gfs)
  [GFS2] Fix typo in last patch
  [GFS2] Fix direct i/o logic in filemap.c
  [GFS2] Fix bug in Makefiles for lock modules
  [GFS2] Remove (extra) fs_subsys declaration
  [GFS2/DLM] Fix trailing whitespace
  [GFS2] Tidy up meta_io code
  ...

1 files changed, 230 insertions, 0 deletions

diff --git a/fs/gfs2/eaops.c b/fs/gfs2/eaops.c
new file mode 100644
index 0000000..92c54e9
--- /dev/null
+++ b/fs/gfs2/eaops.c
@@ -0,0 +1,230 @@
+/*
+ * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
+ * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License version 2.
+ */
+
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/completion.h>
+#include <linux/buffer_head.h>
+#include <linux/xattr.h>
+#include <linux/gfs2_ondisk.h>
+#include <linux/lm_interface.h>
+#include <asm/uaccess.h>
+
+#include "gfs2.h"
+#include "incore.h"
+#include "acl.h"
+#include "eaops.h"
+#include "eattr.h"
+#include "util.h"
+
+/**
+ * gfs2_ea_name2type - get the type of the ea, and truncate type from the name
+ * @namep: ea name, possibly with type appended
+ *
+ * Returns: GFS2_EATYPE_XXX
+ */
+
+unsigned int gfs2_ea_name2type(const char *name, const char **truncated_name)
+{
+	unsigned int type;
+
+	if (strncmp(name, "system.", 7) == 0) {
+		type = GFS2_EATYPE_SYS;
+		if (truncated_name)
+			*truncated_name = name + sizeof("system.") - 1;
+	} else if (strncmp(name, "user.", 5) == 0) {
+		type = GFS2_EATYPE_USR;
+		if (truncated_name)
+			*truncated_name = name + sizeof("user.") - 1;
+	} else if (strncmp(name, "security.", 9) == 0) {
+		type = GFS2_EATYPE_SECURITY;
+		if (truncated_name)
+			*truncated_name = name + sizeof("security.") - 1;
+	} else {
+		type = GFS2_EATYPE_UNUSED;
+		if (truncated_name)
+			*truncated_name = NULL;
+	}
+
+	return type;
+}
+
+static int user_eo_get(struct gfs2_inode *ip, struct gfs2_ea_request *er)
+{
+	struct inode *inode = &ip->i_inode;
+	int error = permission(inode, MAY_READ, NULL);
+	if (error)
+		return error;
+
+	return gfs2_ea_get_i(ip, er);
+}
+
+static int user_eo_set(struct gfs2_inode *ip, struct gfs2_ea_request *er)
+{
+	struct inode *inode = &ip->i_inode;
+
+	if (S_ISREG(inode->i_mode) ||
+	    (S_ISDIR(inode->i_mode) && !(inode->i_mode & S_ISVTX))) {
+		int error = permission(inode, MAY_WRITE, NULL);
+		if (error)
+			return error;
+	} else
+		return -EPERM;
+
+	return gfs2_ea_set_i(ip, er);
+}
+
+static int user_eo_remove(struct gfs2_inode *ip, struct gfs2_ea_request *er)
+{
+	struct inode *inode = &ip->i_inode;
+
+	if (S_ISREG(inode->i_mode) ||
+	    (S_ISDIR(inode->i_mode) && !(inode->i_mode & S_ISVTX))) {
+		int error = permission(inode, MAY_WRITE, NULL);
+		if (error)
+			return error;
+	} else
+		return -EPERM;
+
+	return gfs2_ea_remove_i(ip, er);
+}
+
+static int system_eo_get(struct gfs2_inode *ip, struct gfs2_ea_request *er)
+{
+	if (!GFS2_ACL_IS_ACCESS(er->er_name, er->er_name_len) &&
+	    !GFS2_ACL_IS_DEFAULT(er->er_name, er->er_name_len) &&
+	    !capable(CAP_SYS_ADMIN))
+		return -EPERM;
+
+	if (GFS2_SB(&ip->i_inode)->sd_args.ar_posix_acl == 0 &&
+	    (GFS2_ACL_IS_ACCESS(er->er_name, er->er_name_len) ||
+	     GFS2_ACL_IS_DEFAULT(er->er_name, er->er_name_len)))
+		return -EOPNOTSUPP;
+
+
+
+	return gfs2_ea_get_i(ip, er);
+}
+
+static int system_eo_set(struct gfs2_inode *ip, struct gfs2_ea_request *er)
+{
+	int remove = 0;
+	int error;
+
+	if (GFS2_ACL_IS_ACCESS(er->er_name, er->er_name_len)) {
+		if (!(er->er_flags & GFS2_ERF_MODE)) {
+			er->er_mode = ip->i_di.di_mode;
+			er->er_flags |= GFS2_ERF_MODE;
+		}
+		error = gfs2_acl_validate_set(ip, 1, er,
+					      &remove, &er->er_mode);
+		if (error)
+			return error;
+		error = gfs2_ea_set_i(ip, er);
+		if (error)
+			return error;
+		if (remove)
+			gfs2_ea_remove_i(ip, er);
+		return 0;
+
+	} else if (GFS2_ACL_IS_DEFAULT(er->er_name, er->er_name_len)) {
+		error = gfs2_acl_validate_set(ip, 0, er,
+					      &remove, NULL);
+		if (error)
+			return error;
+		if (!remove)
+			error = gfs2_ea_set_i(ip, er);
+		else {
+			error = gfs2_ea_remove_i(ip, er);
+			if (error == -ENODATA)
+				error = 0;
+		}
+		return error;
+	}
+
+	return -EPERM;
+}
+
+static int system_eo_remove(struct gfs2_inode *ip, struct gfs2_ea_request *er)
+{
+	if (GFS2_ACL_IS_ACCESS(er->er_name, er->er_name_len)) {
+		int error = gfs2_acl_validate_remove(ip, 1);
+		if (error)
+			return error;
+
+	} else if (GFS2_ACL_IS_DEFAULT(er->er_name, er->er_name_len)) {
+		int error = gfs2_acl_validate_remove(ip, 0);
+		if (error)
+			return error;
+
+	} else
+		return -EPERM;
+
+	return gfs2_ea_remove_i(ip, er);
+}
+
+static int security_eo_get(struct gfs2_inode *ip, struct gfs2_ea_request *er)
+{
+	struct inode *inode = &ip->i_inode;
+	int error = permission(inode, MAY_READ, NULL);
+	if (error)
+		return error;
+
+	return gfs2_ea_get_i(ip, er);
+}
+
+static int security_eo_set(struct gfs2_inode *ip, struct gfs2_ea_request *er)
+{
+	struct inode *inode = &ip->i_inode;
+	int error = permission(inode, MAY_WRITE, NULL);
+	if (error)
+		return error;
+
+	return gfs2_ea_set_i(ip, er);
+}
+
+static int security_eo_remove(struct gfs2_inode *ip, struct gfs2_ea_request *er)
+{
+	struct inode *inode = &ip->i_inode;
+	int error = permission(inode, MAY_WRITE, NULL);
+	if (error)
+		return error;
+
+	return gfs2_ea_remove_i(ip, er);
+}
+
+static struct gfs2_eattr_operations gfs2_user_eaops = {
+	.eo_get = user_eo_get,
+	.eo_set = user_eo_set,
+	.eo_remove = user_eo_remove,
+	.eo_name = "user",
+};
+
+struct gfs2_eattr_operations gfs2_system_eaops = {
+	.eo_get = system_eo_get,
+	.eo_set = system_eo_set,
+	.eo_remove = system_eo_remove,
+	.eo_name = "system",
+};
+
+static struct gfs2_eattr_operations gfs2_security_eaops = {
+	.eo_get = security_eo_get,
+	.eo_set = security_eo_set,
+	.eo_remove = security_eo_remove,
+	.eo_name = "security",
+};
+
+struct gfs2_eattr_operations *gfs2_ea_ops[] = {
+	NULL,
+	&gfs2_user_eaops,
+	&gfs2_system_eaops,
+	&gfs2_security_eaops,
+};
+