/*
 * A constraint is a condition that must be satisfied in
 * order for one or more permissions to be granted.
 * Constraints are used to impose additional restrictions
 * beyond the type-based rules in `te' or the role-based
 * transition rules in `rbac'.  Constraints are typically
 * used to prevent a process from transitioning to a new user
 * identity or role unless it is in a privileged type.
 * Constraints are likewise typically used to prevent a
 * process from labeling an object with a different user
 * identity.
 *
 * Author : Stephen Smalley, <sds@epoch.ncsc.mil>
 */
#ifndef _SS_CONSTRAINT_H_
#define _SS_CONSTRAINT_H_

#include "ebitmap.h"

#define CEXPR_MAXDEPTH 5

struct constraint_expr {
#define CEXPR_NOT		1 /* not expr */
#define CEXPR_AND		2 /* expr and expr */
#define CEXPR_OR		3 /* expr or expr */
#define CEXPR_ATTR		4 /* attr op attr */
#define CEXPR_NAMES		5 /* attr op names */
	u32 expr_type;		/* expression type */

#define CEXPR_USER 1		/* user */
#define CEXPR_ROLE 2		/* role */
#define CEXPR_TYPE 4		/* type */
#define CEXPR_TARGET 8		/* target if set, source otherwise */
#define CEXPR_XTARGET 16	/* special 3rd target for validatetrans rule */
#define CEXPR_L1L2 32		/* low level 1 vs. low level 2 */
#define CEXPR_L1H2 64		/* low level 1 vs. high level 2 */
#define CEXPR_H1L2 128		/* high level 1 vs. low level 2 */
#define CEXPR_H1H2 256		/* high level 1 vs. high level 2 */
#define CEXPR_L1H1 512		/* low level 1 vs. high level 1 */
#define CEXPR_L2H2 1024		/* low level 2 vs. high level 2 */
	u32 attr;		/* attribute */

#define CEXPR_EQ     1		/* == or eq */
#define CEXPR_NEQ    2		/* != */
#define CEXPR_DOM    3		/* dom */
#define CEXPR_DOMBY  4		/* domby  */
#define CEXPR_INCOMP 5		/* incomp */
	u32 op;			/* operator */

	struct ebitmap names;	/* names */
	struct type_set *type_names;

	struct constraint_expr *next;   /* next expression */
};

struct constraint_node {
	u32 permissions;	/* constrained permissions */
	struct constraint_expr *expr;	/* constraint on permissions */
	struct constraint_node *next;	/* next constraint */
};

#endif	/* _SS_CONSTRAINT_H_ */
t.cgi/linux/net-next.git/log/tools/net/bpf_asm.c'>
<input type='hidden' name='id' value='2d6a0e9de03ee658a9adc3bfb2f0ca55dff1e478'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=2d6a0e9de03ee658a9adc3bfb2f0ca55dff1e478'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools?id=2d6a0e9de03ee658a9adc3bfb2f0ca55dff1e478'>tools</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/net?id=2d6a0e9de03ee658a9adc3bfb2f0ca55dff1e478'>net</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/net/bpf_asm.c?id=2d6a0e9de03ee658a9adc3bfb2f0ca55dff1e478'>bpf_asm.c</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/tools/net/bpf_asm.c?id=2d6a0e9de03ee658a9adc3bfb2f0ca55dff1e478&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
fc6ee7c05a88e4996e8177f91b'>Collapse</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>