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File policydb.h

#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);

/* 
 * 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

Name	Type	Size	Permission	Last Modified	Actions
.	DIR	-	drwxr-xr-x	2024-03-13 05:00:01
..	DIR	-	drwxr-xr-x	2025-10-28 10:57:27
cil	DIR	-	drwxr-xr-x	2024-03-13 05:00:01
policydb	DIR	-	drwxr-xr-x	2024-03-13 05:00:01
boolean_record.h	text/x-c	1.51 KB	-rw-r--r--	2021-10-09 02:44:18
booleans.h	text/x-c	2.19 KB	-rw-r--r--	2021-10-09 02:44:18
context.h	text/x-c	752 B	-rw-r--r--	2021-10-09 02:44:18
context_record.h	text/x-c	1.63 KB	-rw-r--r--	2021-10-09 02:44:18
debug.h	text/x-c	975 B	-rw-r--r--	2021-10-09 02:44:18
errcodes.h	text/x-c	851 B	-rw-r--r--	2021-10-09 02:44:18
handle.h	text/x-c	1.36 KB	-rw-r--r--	2021-10-09 02:44:18
ibendport_record.h	text/x-c	2.13 KB	-rw-r--r--	2021-10-09 02:44:18
ibendports.h	text/x-c	1.35 KB	-rw-r--r--	2021-10-09 02:44:18
ibpkey_record.h	text/x-c	2.25 KB	-rw-r--r--	2021-10-09 02:44:18
ibpkeys.h	text/x-c	1.32 KB	-rw-r--r--	2021-10-09 02:44:18
iface_record.h	text/x-c	1.8 KB	-rw-r--r--	2021-10-09 02:44:18
interfaces.h	text/x-c	1.37 KB	-rw-r--r--	2021-10-09 02:44:18
kernel_to_cil.h	text/x-c	125 B	-rw-r--r--	2021-10-09 02:44:18
kernel_to_conf.h	text/x-c	126 B	-rw-r--r--	2021-10-09 02:44:18
module.h	text/x-c	2.62 KB	-rw-r--r--	2021-10-09 02:44:18
module_to_cil.h	text/x-c	329 B	-rw-r--r--	2021-10-09 02:44:18
node_record.h	text/x-c	2.74 KB	-rw-r--r--	2021-10-09 02:44:18
nodes.h	text/x-c	1.28 KB	-rw-r--r--	2021-10-09 02:44:18
policydb.h	text/x-c	4.58 KB	-rw-r--r--	2021-10-09 02:44:18
port_record.h	text/x-c	1.97 KB	-rw-r--r--	2021-10-09 02:44:18
ports.h	text/x-c	1.28 KB	-rw-r--r--	2021-10-09 02:44:18
roles.h	text/x-c	339 B	-rw-r--r--	2021-10-09 02:44:18
sepol.h	text/x-c	862 B	-rw-r--r--	2021-10-09 02:44:18
user_record.h	text/x-c	2.33 KB	-rw-r--r--	2021-10-09 02:44:18
users.h	text/x-c	1.98 KB	-rw-r--r--	2021-10-09 02:44:18

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