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#ifndef _SEPOL_POLICYDB_H_
#define _SEPOL_POLICYDB_H_
#include <stddef.h>
#include <stdio.h>
#include <sepol/handle.h>
#ifdef __cplusplus
extern "C" {
#endif
struct sepol_policy_file;
typedef struct sepol_policy_file sepol_policy_file_t;
struct sepol_policydb;
typedef struct sepol_policydb sepol_policydb_t;
/* Policy file public interfaces. */
/* Create and free memory associated with a policy file. */
extern int sepol_policy_file_create(sepol_policy_file_t ** pf);
extern void sepol_policy_file_free(sepol_policy_file_t * pf);
/*
* Set the policy file to represent a binary policy memory image.
* Subsequent operations using the policy file will read and write
* the image located at the specified address with the specified length.
* If 'len' is 0, then merely compute the necessary length upon
* subsequent policydb write operations in order to determine the
* necessary buffer size to allocate.
*/
extern void sepol_policy_file_set_mem(sepol_policy_file_t * pf,
char *data, size_t len);
/*
* Get the size of the buffer needed to store a policydb write
* previously done on this policy file.
*/
extern int sepol_policy_file_get_len(sepol_policy_file_t * pf, size_t * len);
/*
* Set the policy file to represent a FILE.
* Subsequent operations using the policy file will read and write
* to the FILE.
*/
extern void sepol_policy_file_set_fp(sepol_policy_file_t * pf, FILE * fp);
/*
* Associate a handle with a policy file, for use in
* error reporting from subsequent calls that take the
* policy file as an argument.
*/
extern void sepol_policy_file_set_handle(sepol_policy_file_t * pf,
sepol_handle_t * handle);
/* Policydb public interfaces. */
/* Create and free memory associated with a policydb. */
extern int sepol_policydb_create(sepol_policydb_t ** p);
extern void sepol_policydb_free(sepol_policydb_t * p);
/* Legal types of policies that the policydb can represent. */
#define SEPOL_POLICY_KERN 0
#define SEPOL_POLICY_BASE 1
#define SEPOL_POLICY_MOD 2
/*
* Range of policy versions for the kernel policy type supported
* by this library.
*/
extern int sepol_policy_kern_vers_min(void);
extern int sepol_policy_kern_vers_max(void);
/*
* Set the policy type as specified, and automatically initialize the
* policy version accordingly to the maximum version supported for the
* policy type.
* Returns -1 if the policy type is not legal.
*/
extern int sepol_policydb_set_typevers(sepol_policydb_t * p, unsigned int type);
/*
* Set the policy version to a different value.
* Returns -1 if the policy version is not in the supported range for
* the (previously set) policy type.
*/
extern int sepol_policydb_set_vers(sepol_policydb_t * p, unsigned int vers);
/* Set how to handle unknown class/perms. */
#define SEPOL_DENY_UNKNOWN 0
#define SEPOL_REJECT_UNKNOWN 2
#define SEPOL_ALLOW_UNKNOWN 4
extern int sepol_policydb_set_handle_unknown(sepol_policydb_t * p,
unsigned int handle_unknown);
/* Set the target platform */
#define SEPOL_TARGET_SELINUX 0
#define SEPOL_TARGET_XEN 1
extern int sepol_policydb_set_target_platform(sepol_policydb_t * p,
int target_platform);
/*
* Optimize the policy by removing redundant rules.
*/
extern int sepol_policydb_optimize(sepol_policydb_t * p);
/*
* Read a policydb from a policy file.
* This automatically sets the type and version based on the
* image contents.
*/
extern int sepol_policydb_read(sepol_policydb_t * p, sepol_policy_file_t * pf);
/*
* Write a policydb to a policy file.
* The generated image will be in the binary format corresponding
* to the policy version associated with the policydb.
*/
extern int sepol_policydb_write(sepol_policydb_t * p, sepol_policy_file_t * pf);
/*
* Extract a policydb from a binary policy memory image.
* This is equivalent to sepol_policydb_read with a policy file
* set to refer to memory.
*/
extern int sepol_policydb_from_image(sepol_handle_t * handle,
void *data, size_t len,
sepol_policydb_t * p);
/*
* Generate a binary policy memory image from a policydb.
* This is equivalent to sepol_policydb_write with a policy file
* set to refer to memory, but internally handles computing the
* necessary length and allocating an appropriately sized memory
* buffer for the caller.
*/
extern int sepol_policydb_to_image(sepol_handle_t * handle,
sepol_policydb_t * p,
void **newdata, size_t * newlen);
/*
* Check whether the policydb has MLS enabled.
*/
extern int sepol_policydb_mls_enabled(const sepol_policydb_t * p);
/*
* Check whether the compatibility mode for SELinux network
* checks should be enabled when using this policy.
*/
extern int sepol_policydb_compat_net(const sepol_policydb_t * p);
#ifdef __cplusplus
}
#endif
#endif