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/*
* include/linux/realpath.h
*
* Get the canonicalized absolute pathnames. The basis for SAKURA and TOMOYO.
*
* Copyright (C) 2005-2008 NTT DATA CORPORATION
*
* Version: 1.6.3 2008/07/15
*
* This file is applicable to both 2.4.30 and 2.6.11 and later.
* See README.ccs for ChangeLog.
*
*/
#ifndef _LINUX_REALPATH_H
#define _LINUX_REALPATH_H
struct dentry;
struct vfsmount;
struct condition_list;
struct path_info;
struct ccs_io_buffer;
/* Returns realpath(3) of the given pathname but ignores chroot'ed root. */
int ccs_realpath_from_dentry2(struct dentry *dentry, struct vfsmount *mnt,
char *newname, int newname_len);
/*
* Returns realpath(3) of the given pathname but ignores chroot'ed root.
* These functions use ccs_alloc(), so caller must ccs_free()
* if these functions didn't return NULL.
*/
char *ccs_realpath(const char *pathname);
/* Same with ccs_realpath() except that it doesn't follow the final symlink. */
char *ccs_realpath_nofollow(const char *pathname);
/* Same with ccs_realpath() except that the pathname is already solved. */
char *ccs_realpath_from_dentry(struct dentry *dentry, struct vfsmount *mnt);
/*
* Allocate memory for ACL entry.
* The RAM is chunked, so NEVER try to kfree() the returned pointer.
*/
void *ccs_alloc_element(const unsigned int size);
/*
* Keep the given name on the RAM.
* The RAM is shared, so NEVER try to modify or kfree() the returned name.
*/
const struct path_info *ccs_save_name(const char *name);
/* Allocate memory for temporary use (e.g. permission checks). */
void *ccs_alloc(const size_t size);
/* Free memory allocated by ccs_alloc(). */
void ccs_free(const void *p);
/* Check for memory usage. */
int ccs_read_memory_counter(struct ccs_io_buffer *head);
/* Set memory quota. */
int ccs_write_memory_quota(struct ccs_io_buffer *head);
#endif
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