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      1 /*	$NetBSD: cred.h,v 1.8 2020/10/12 08:21:21 hannken Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2007 Pawel Jakub Dawidek <pjd (at) FreeBSD.org>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  *
     28  * $FreeBSD: head/sys/cddl/compat/opensolaris/sys/cred.h 248571 2013-03-21 08:38:03Z mm $
     29  */
     30 
     31 #ifndef _OPENSOLARIS_SYS_CRED_H_
     32 #define	_OPENSOLARIS_SYS_CRED_H_
     33 
     34 #ifdef _KERNEL
     35 /* Needed for access to cr_groups.  */
     36 #define	__KAUTH_PRIVATE
     37 #endif
     38 
     39 #include <sys/param.h>
     40 #include <sys/types.h>
     41 
     42 #ifdef _KERNEL
     43 #include <sys/kauth.h>
     44 
     45 #define	CRED()		(kauth_cred_get())
     46 #define	kcred		cred0
     47 
     48 extern kauth_cred_t	cred0;
     49 
     50 #define	crgetuid(cr)		kauth_cred_geteuid(cr)
     51 #define	crgetruid(cr)		kauth_cred_getuid(cr)
     52 #define	crgetgid(cr)		kauth_cred_getegid(cr)
     53 #define	crgetrgid(cr)		kauth_cred_getgid(cr)
     54 #define	crgetngroups(cr) 	kauth_cred_ngroups(cr)
     55 #define	cralloc()		kauth_cred_alloc()
     56 #define crhold(cr)		kauth_cred_hold(cr)
     57 #define	crfree(cr)		kauth_cred_free(cr)
     58 #define	crsetugid(cr, u, g)	( \
     59 	kauth_cred_setuid(cr, u), \
     60 	kauth_cred_setgid(cr, g), \
     61 	kauth_cred_seteuid(cr, u), \
     62 	kauth_cred_setegid(cr, g), \
     63 	kauth_cred_setsvuid(cr, u), \
     64 	kauth_cred_setsvgid(cr, g), 0)
     65 #define crgetgroups(cr)		((cr)->cr_groups)
     66 #define	crsetgroups(cr, gc, ga)	\
     67     kauth_cred_setgroups(cr, ga, gc, 0, UIO_SYSSPACE)
     68 #define crgetsid(cr, i) (NULL)
     69 
     70 static __inline int
     71 groupmember(gid_t gid, cred_t *cr)
     72 {
     73 	int result, error;
     74 
     75 	error = kauth_cred_ismember_gid(cr, gid, &result);
     76 	if (error)
     77 		return 0;
     78 	return (kauth_cred_getegid(cr) == gid || result);
     79 }
     80 
     81 #endif	/* _KERNEL */
     82 
     83 #endif	/* _OPENSOLARIS_SYS_CRED_H_ */
     84