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/*
* security/tomoyo/realpath.h
*
* Get the canonicalized absolute pathnames. The basis for TOMOYO.
*
* Copyright (C) 2005-2009 NTT DATA CORPORATION
*
* Version: 2.2.0-pre 2009/02/01
*
*/
#ifndef _SECURITY_TOMOYO_REALPATH_H
#define _SECURITY_TOMOYO_REALPATH_H
struct path;
struct tomoyo_path_info;
struct tomoyo_io_buffer;
/* Convert binary string to ascii string. */
int tomoyo_encode(char *buffer, int buflen, const char *str);
/* Returns realpath(3) of the given pathname but ignores chroot'ed root. */
int tomoyo_realpath_from_path2(struct path *path, char *newname,
int newname_len);
/*
* Returns realpath(3) of the given pathname but ignores chroot'ed root.
* These functions use tomoyo_alloc(), so the caller must call tomoyo_free()
* if these functions didn't return NULL.
*/
char *tomoyo_realpath(const char *pathname);
/*
* Same with tomoyo_realpath() except that it doesn't follow the final symlink.
*/
char *tomoyo_realpath_nofollow(const char *pathname);
/* Same with tomoyo_realpath() except that the pathname is already solved. */
char *tomoyo_realpath_from_path(struct path *path);
/*
* Allocate memory for ACL entry.
* The RAM is chunked, so NEVER try to kfree() the returned pointer.
*/
void *tomoyo_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 tomoyo_path_info *tomoyo_save_name(const char *name);
/* Allocate memory for temporary use (e.g. permission checks). */
void *tomoyo_alloc(const size_t size);
/* Free memory allocated by tomoyo_alloc(). */
void tomoyo_free(const void *p);
/* Check for memory usage. */
int tomoyo_read_memory_counter(struct tomoyo_io_buffer *head);
/* Set memory quota. */
int tomoyo_write_memory_quota(struct tomoyo_io_buffer *head);
/* Initialize realpath related code. */
void __init tomoyo_realpath_init(void);
#endif /* !defined(_SECURITY_TOMOYO_REALPATH_H) */
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