linux/fs/overlayfs/xattrs.c

// SPDX-License-Identifier: GPL-2.0-only

#include <linux/fs.h>
#include <linux/xattr.h>
#include "overlayfs.h"

static bool ovl_is_escaped_xattr(struct super_block *sb, const char *name)
{ … }

static bool ovl_is_own_xattr(struct super_block *sb, const char *name)
{ … }

bool ovl_is_private_xattr(struct super_block *sb, const char *name)
{ … }

static int ovl_xattr_set(struct dentry *dentry, struct inode *inode, const char *name,
			 const void *value, size_t size, int flags)
{ … }

static int ovl_xattr_get(struct dentry *dentry, struct inode *inode, const char *name,
			 void *value, size_t size)
{ … }

static bool ovl_can_list(struct super_block *sb, const char *s)
{ … }

ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size)
{ … }

static char *ovl_xattr_escape_name(const char *prefix, const char *name)
{ … }

static int ovl_own_xattr_get(const struct xattr_handler *handler,
			     struct dentry *dentry, struct inode *inode,
			     const char *name, void *buffer, size_t size)
{ … }

static int ovl_own_xattr_set(const struct xattr_handler *handler,
			     struct mnt_idmap *idmap,
			     struct dentry *dentry, struct inode *inode,
			     const char *name, const void *value,
			     size_t size, int flags)
{ … }

static int ovl_other_xattr_get(const struct xattr_handler *handler,
			       struct dentry *dentry, struct inode *inode,
			       const char *name, void *buffer, size_t size)
{ … }

static int ovl_other_xattr_set(const struct xattr_handler *handler,
			       struct mnt_idmap *idmap,
			       struct dentry *dentry, struct inode *inode,
			       const char *name, const void *value,
			       size_t size, int flags)
{ … }

static const struct xattr_handler ovl_own_trusted_xattr_handler = …;

static const struct xattr_handler ovl_own_user_xattr_handler = …;

static const struct xattr_handler ovl_other_xattr_handler = …;

static const struct xattr_handler * const ovl_trusted_xattr_handlers[] = …;

static const struct xattr_handler * const ovl_user_xattr_handlers[] = …;

const struct xattr_handler * const *ovl_xattr_handlers(struct ovl_fs *ofs)
{ … }