[mirror_ubuntu-artful-kernel.git] / fs / cifs / cifsacl.c

/*
 *   fs/cifs/cifsacl.c
 *
 *   Copyright (C) International Business Machines  Corp., 2007
 *   Author(s): Steve French (sfrench@us.ibm.com)
 *
 *   Contains the routines for mapping CIFS/NTFS ACLs
 *
 *   This library is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU Lesser General Public License as published
 *   by the Free Software Foundation; either version 2.1 of the License, or
 *   (at your option) any later version.
 *
 *   This library is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
 *   the GNU Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public License
 *   along with this library; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#include <linux/fs.h>
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsacl.h"
#include "cifsproto.h"
#include "cifs_debug.h"


#ifdef CONFIG_CIFS_EXPERIMENTAL

static struct cifs_wksid wksidarr[NUM_WK_SIDS] = {
	{{1, 0, {0, 0, 0, 0, 0, 0}, {0, 0, 0, 0, 0} }, "null user"},
	{{1, 1, {0, 0, 0, 0, 0, 1}, {0, 0, 0, 0, 0} }, "nobody"},
	{{1, 1, {0, 0, 0, 0, 0, 5}, {cpu_to_le32(11), 0, 0, 0, 0} }, "net-users"},
	{{1, 1, {0, 0, 0, 0, 0, 5}, {cpu_to_le32(18), 0, 0, 0, 0} }, "sys"},
	{{1, 2, {0, 0, 0, 0, 0, 5}, {cpu_to_le32(32), cpu_to_le32(544), 0, 0, 0} }, "root"},
	{{1, 2, {0, 0, 0, 0, 0, 5}, {cpu_to_le32(32), cpu_to_le32(545), 0, 0, 0} }, "users"},
	{{1, 2, {0, 0, 0, 0, 0, 5}, {cpu_to_le32(32), cpu_to_le32(546), 0, 0, 0} }, "guest"}
};


/* security id for everyone */
static const struct cifs_sid sid_everyone =
		{1, 1, {0, 0, 0, 0, 0, 0}, {} };
/* group users */
static const struct cifs_sid sid_user =
		{1, 2 , {0, 0, 0, 0, 0, 5}, {} };


int match_sid(struct cifs_sid *ctsid)
{
	int i, j;
	int num_subauth, num_sat, num_saw;
	struct cifs_sid *cwsid;

	if (!ctsid)
		return (-1);

	for (i = 0; i < NUM_WK_SIDS; ++i) {
		cwsid = &(wksidarr[i].cifssid);

		/* compare the revision */
		if (ctsid->revision != cwsid->revision)
			continue;

		/* compare all of the six auth values */
		for (j = 0; j < 6; ++j) {
			if (ctsid->authority[j] != cwsid->authority[j])
				break;
		}
		if (j < 6)
			continue; /* all of the auth values did not match */

		/* compare all of the subauth values if any */
		num_sat = ctsid->num_subauth;
		num_saw = cwsid->num_subauth;
		num_subauth = num_sat < num_saw ? num_sat : num_saw;
		if (num_subauth) {
			for (j = 0; j < num_subauth; ++j) {
				if (ctsid->sub_auth[j] != cwsid->sub_auth[j])
					break;
			}
			if (j < num_subauth)
				continue; /* all sub_auth values do not match */
		}

		cFYI(1, ("matching sid: %s\n", wksidarr[i].sidname));
		return (0); /* sids compare/match */
	}

	cFYI(1, ("No matching sid"));
	return (-1);
}


int compare_sids(struct cifs_sid *ctsid, struct cifs_sid *cwsid)
{
	int i;
	int num_subauth, num_sat, num_saw;

	if ((!ctsid) || (!cwsid))
		return (-1);

	/* compare the revision */
	if (ctsid->revision != cwsid->revision)
		return (-1);

	/* compare all of the six auth values */
	for (i = 0; i < 6; ++i) {
		if (ctsid->authority[i] != cwsid->authority[i])
			return (-1);
	}

	/* compare all of the subauth values if any */
	num_sat = ctsid->num_subauth;
	num_saw = cwsid->num_subauth;
	num_subauth = num_sat < num_saw ? num_sat : num_saw;
	if (num_subauth) {
		for (i = 0; i < num_subauth; ++i) {
			if (ctsid->sub_auth[i] != cwsid->sub_auth[i])
				return (-1);
		}
	}

	return (0); /* sids compare/match */
}


static void parse_ace(struct cifs_ace *pace, char *end_of_acl)
{
	int num_subauth;

	/* validate that we do not go past end of acl */

	/* XXX this if statement can be removed
	if (end_of_acl < (char *)pace + sizeof(struct cifs_ace)) {
		cERROR(1, ("ACL too small to parse ACE"));
		return;
	} */

	num_subauth = pace->num_subauth;
	if (num_subauth) {
#ifdef CONFIG_CIFS_DEBUG2
		int i;
		cFYI(1, ("ACE revision %d num_subauth %d",
			pace->revision, pace->num_subauth));
		for (i = 0; i < num_subauth; ++i) {
			cFYI(1, ("ACE sub_auth[%d]: 0x%x", i,
				le32_to_cpu(pace->sub_auth[i])));
		}

		/* BB add length check to make sure that we do not have huge
			num auths and therefore go off the end */

		cFYI(1, ("RID %d", le32_to_cpu(pace->sub_auth[num_subauth-1])));
#endif
	}

	return;
}

static void parse_ntace(struct cifs_ntace *pntace, char *end_of_acl)
{
	/* validate that we do not go past end of acl */
	if (end_of_acl < (char *)pntace + sizeof(struct cifs_ntace)) {
		cERROR(1, ("ACL too small to parse NT ACE"));
		return;
	}

#ifdef CONFIG_CIFS_DEBUG2
	cFYI(1, ("NTACE type %d flags 0x%x size %d, access Req 0x%x",
		pntace->type, pntace->flags, pntace->size,
		pntace->access_req));
#endif
	return;
}


static void parse_dacl(struct cifs_acl *pdacl, char *end_of_acl)
{
	int i;
	int num_aces = 0;
	int acl_size;
	char *acl_base;
	struct cifs_ntace **ppntace;
	struct cifs_ace **ppace;

	/* BB need to add parm so we can store the SID BB */

	/* validate that we do not go past end of acl */
	if (end_of_acl < (char *)pdacl + le16_to_cpu(pdacl->size)) {
		cERROR(1, ("ACL too small to parse DACL"));
		return;
	}

#ifdef CONFIG_CIFS_DEBUG2
	cFYI(1, ("DACL revision %d size %d num aces %d",
		le16_to_cpu(pdacl->revision), le16_to_cpu(pdacl->size),
		le32_to_cpu(pdacl->num_aces)));
#endif

	acl_base = (char *)pdacl;
	acl_size = sizeof(struct cifs_acl);

	num_aces = le32_to_cpu(pdacl->num_aces);
	if (num_aces  > 0) {
		ppntace = kmalloc(num_aces * sizeof(struct cifs_ntace *),
				GFP_KERNEL);
		ppace = kmalloc(num_aces * sizeof(struct cifs_ace *),
				GFP_KERNEL);

/*		cifscred->cecount = pdacl->num_aces;
		cifscred->ntaces = kmalloc(num_aces *
			sizeof(struct cifs_ntace *), GFP_KERNEL);
		cifscred->aces = kmalloc(num_aces *
			sizeof(struct cifs_ace *), GFP_KERNEL);*/


		for (i = 0; i < num_aces; ++i) {
			ppntace[i] = (struct cifs_ntace *)
					(acl_base + acl_size);
			ppace[i] = (struct cifs_ace *) ((char *)ppntace[i] +
					sizeof(struct cifs_ntace));

			parse_ntace(ppntace[i], end_of_acl);
			if (end_of_acl < ((char *)ppace[i] +
					(le16_to_cpu(ppntace[i]->size) -
					sizeof(struct cifs_ntace)))) {
				cERROR(1, ("ACL too small to parse ACE"));
				break;
			} else
				parse_ace(ppace[i], end_of_acl);

/*			memcpy((void *)(&(cifscred->ntaces[i])),
				(void *)ppntace[i],
				sizeof(struct cifs_ntace));
			memcpy((void *)(&(cifscred->aces[i])),
				(void *)ppace[i],
				sizeof(struct cifs_ace)); */

			acl_base = (char *)ppntace[i];
			acl_size = le16_to_cpu(ppntace[i]->size);
		}

		kfree(ppace);
		kfree(ppntace);
	}

	return;
}


static int parse_sid(struct cifs_sid *psid, char *end_of_acl)
{

	/* BB need to add parm so we can store the SID BB */

	/* validate that we do not go past end of acl */
	if (end_of_acl < (char *)psid + sizeof(struct cifs_sid)) {
		cERROR(1, ("ACL too small to parse SID"));
		return -EINVAL;
	}

	if (psid->num_subauth) {
#ifdef CONFIG_CIFS_DEBUG2
		int i;
		cFYI(1, ("SID revision %d num_auth %d First subauth 0x%x",
			psid->revision, psid->num_subauth, psid->sub_auth[0]));

		for (i = 0; i < psid->num_subauth; i++) {
			cFYI(1, ("SID sub_auth[%d]: 0x%x ", i,
				le32_to_cpu(psid->sub_auth[i])));
		}

		/* BB add length check to make sure that we do not have huge
			num auths and therefore go off the end */
		cFYI(1, ("RID 0x%x",
			le32_to_cpu(psid->sub_auth[psid->num_subauth-1])));
#endif
	}

	return 0;
}


/* Convert CIFS ACL to POSIX form */
int parse_sec_desc(struct cifs_ntsd *pntsd, int acl_len)
{
	int rc;
	struct cifs_sid *owner_sid_ptr, *group_sid_ptr;
	struct cifs_acl *dacl_ptr; /* no need for SACL ptr */
	char *end_of_acl = ((char *)pntsd) + acl_len;

	owner_sid_ptr = (struct cifs_sid *)((char *)pntsd +
				le32_to_cpu(pntsd->osidoffset));
	group_sid_ptr = (struct cifs_sid *)((char *)pntsd +
				le32_to_cpu(pntsd->gsidoffset));
	dacl_ptr = (struct cifs_acl *)((char *)pntsd +
				le32_to_cpu(pntsd->dacloffset));
#ifdef CONFIG_CIFS_DEBUG2
	cFYI(1, ("revision %d type 0x%x ooffset 0x%x goffset 0x%x "
		 "sacloffset 0x%x dacloffset 0x%x",
		 pntsd->revision, pntsd->type, le32_to_cpu(pntsd->osidoffset),
		 le32_to_cpu(pntsd->gsidoffset),
		 le32_to_cpu(pntsd->sacloffset),
		 le32_to_cpu(pntsd->dacloffset)));
#endif
	rc = parse_sid(owner_sid_ptr, end_of_acl);
	if (rc)
		return rc;

	rc = parse_sid(group_sid_ptr, end_of_acl);
	if (rc)
		return rc;

	parse_dacl(dacl_ptr, end_of_acl);

/*	cifscred->uid = owner_sid_ptr->rid;
	cifscred->gid = group_sid_ptr->rid;
	memcpy((void *)(&(cifscred->osid)), (void *)owner_sid_ptr,
			sizeof (struct cifs_sid));
	memcpy((void *)(&(cifscred->gsid)), (void *)group_sid_ptr,
			sizeof (struct cifs_sid)); */


	return (0);
}
#endif /* CONFIG_CIFS_EXPERIMENTAL */
Commit	Line	Data
bcb02034 SF	1	/*
	2	* fs/cifs/cifsacl.c
	3	*
	4	* Copyright (C) International Business Machines Corp., 2007
	5	* Author(s): Steve French (sfrench@us.ibm.com)
	6	*
	7	* Contains the routines for mapping CIFS/NTFS ACLs
	8	*
	9	* This library is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU Lesser General Public License as published
	11	* by the Free Software Foundation; either version 2.1 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This library is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
	17	* the GNU Lesser General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU Lesser General Public License
	20	* along with this library; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	22	*/
	23
65874007 SF	24	#include <linux/fs.h>
	25	#include "cifspdu.h"
	26	#include "cifsglob.h"
d0d66c44	27	#include "cifsacl.h"
65874007 SF	28	#include "cifsproto.h"
65874007 SF	29	#include "cifs_debug.h"
65874007	30
297647c2 SF	31
	32	#ifdef CONFIG_CIFS_EXPERIMENTAL
	33
af6f4612	34	static struct cifs_wksid wksidarr[NUM_WK_SIDS] = {
297647c2 SF	35	{{1, 0, {0, 0, 0, 0, 0, 0}, {0, 0, 0, 0, 0} }, "null user"},
297647c2 SF	36	{{1, 1, {0, 0, 0, 0, 0, 1}, {0, 0, 0, 0, 0} }, "nobody"},
ce51ae14 DK	37	{{1, 1, {0, 0, 0, 0, 0, 5}, {cpu_to_le32(11), 0, 0, 0, 0} }, "net-users"},
	38	{{1, 1, {0, 0, 0, 0, 0, 5}, {cpu_to_le32(18), 0, 0, 0, 0} }, "sys"},
	39	{{1, 2, {0, 0, 0, 0, 0, 5}, {cpu_to_le32(32), cpu_to_le32(544), 0, 0, 0} }, "root"},
	40	{{1, 2, {0, 0, 0, 0, 0, 5}, {cpu_to_le32(32), cpu_to_le32(545), 0, 0, 0} }, "users"},
	41	{{1, 2, {0, 0, 0, 0, 0, 5}, {cpu_to_le32(32), cpu_to_le32(546), 0, 0, 0} }, "guest"}
297647c2 SF	42	};
	43
	44
bcb02034 SF	45	/* security id for everyone */
bcb02034 SF	46	static const struct cifs_sid sid_everyone =
d12fd121	47	{1, 1, {0, 0, 0, 0, 0, 0}, {} };
bcb02034 SF	48	/* group users */
bcb02034 SF	49	static const struct cifs_sid sid_user =
d12fd121	50	{1, 2 , {0, 0, 0, 0, 0, 5}, {} };
d0d66c44	51
297647c2 SF	52
	53	int match_sid(struct cifs_sid *ctsid)
	54	{
	55	int i, j;
	56	int num_subauth, num_sat, num_saw;
	57	struct cifs_sid *cwsid;
	58
	59	if (!ctsid)
	60	return (-1);
	61
	62	for (i = 0; i < NUM_WK_SIDS; ++i) {
	63	cwsid = &(wksidarr[i].cifssid);
	64
	65	/* compare the revision */
	66	if (ctsid->revision != cwsid->revision)
	67	continue;
	68
	69	/* compare all of the six auth values */
	70	for (j = 0; j < 6; ++j) {
	71	if (ctsid->authority[j] != cwsid->authority[j])
	72	break;
	73	}
	74	if (j < 6)
	75	continue; /* all of the auth values did not match */
	76
	77	/* compare all of the subauth values if any */
ce51ae14 DK	78	num_sat = ctsid->num_subauth;
ce51ae14 DK	79	num_saw = cwsid->num_subauth;
297647c2 SF	80	num_subauth = num_sat < num_saw ? num_sat : num_saw;
	81	if (num_subauth) {
	82	for (j = 0; j < num_subauth; ++j) {
	83	if (ctsid->sub_auth[j] != cwsid->sub_auth[j])
	84	break;
	85	}
	86	if (j < num_subauth)
	87	continue; /* all sub_auth values do not match */
	88	}
	89
	90	cFYI(1, ("matching sid: %s\n", wksidarr[i].sidname));
	91	return (0); /* sids compare/match */
	92	}
	93
	94	cFYI(1, ("No matching sid"));
	95	return (-1);
	96	}
	97
	98
	99	int compare_sids(struct cifs_sid ctsid, struct cifs_sid cwsid)
	100	{
	101	int i;
	102	int num_subauth, num_sat, num_saw;
	103
	104	if ((!ctsid) \|\| (!cwsid))
	105	return (-1);
	106
	107	/* compare the revision */
	108	if (ctsid->revision != cwsid->revision)
	109	return (-1);
	110
	111	/* compare all of the six auth values */
	112	for (i = 0; i < 6; ++i) {
	113	if (ctsid->authority[i] != cwsid->authority[i])
	114	return (-1);
	115	}
	116
	117	/* compare all of the subauth values if any */
adbc0358	118	num_sat = ctsid->num_subauth;
adddd49d	119	num_saw = cwsid->num_subauth;
297647c2 SF	120	num_subauth = num_sat < num_saw ? num_sat : num_saw;
	121	if (num_subauth) {
	122	for (i = 0; i < num_subauth; ++i) {
	123	if (ctsid->sub_auth[i] != cwsid->sub_auth[i])
	124	return (-1);
	125	}
	126	}
	127
	128	return (0); /* sids compare/match */
	129	}
	130
	131
d12fd121	132	static void parse_ace(struct cifs_ace pace, char end_of_acl)
d0d66c44	133	{
d0d66c44	134	int num_subauth;
d0d66c44 SP	135
d0d66c44 SP	136	/* validate that we do not go past end of acl */
297647c2 SF	137
297647c2 SF	138	/* XXX this if statement can be removed
d0d66c44 SP	139	if (end_of_acl < (char *)pace + sizeof(struct cifs_ace)) {
	140	cERROR(1, ("ACL too small to parse ACE"));
	141	return;
297647c2	142	} */
d0d66c44	143
ce51ae14	144	num_subauth = pace->num_subauth;
d0d66c44	145	if (num_subauth) {
d12fd121	146	#ifdef CONFIG_CIFS_DEBUG2
8f18c131	147	int i;
d12fd121 SF	148	cFYI(1, ("ACE revision %d num_subauth %d",
	149	pace->revision, pace->num_subauth));
	150	for (i = 0; i < num_subauth; ++i) {
	151	cFYI(1, ("ACE sub_auth[%d]: 0x%x", i,
297647c2	152	le32_to_cpu(pace->sub_auth[i])));
d12fd121 SF	153	}
	154
	155	/* BB add length check to make sure that we do not have huge
	156	num auths and therefore go off the end */
	157
297647c2	158	cFYI(1, ("RID %d", le32_to_cpu(pace->sub_auth[num_subauth-1])));
d12fd121 SF	159	#endif
	160	}
	161
	162	return;
	163	}
	164
	165	static void parse_ntace(struct cifs_ntace pntace, char end_of_acl)
	166	{
	167	/* validate that we do not go past end of acl */
d0d66c44 SP	168	if (end_of_acl < (char *)pntace + sizeof(struct cifs_ntace)) {
	169	cERROR(1, ("ACL too small to parse NT ACE"));
	170	return;
	171	}
	172
	173	#ifdef CONFIG_CIFS_DEBUG2
	174	cFYI(1, ("NTACE type %d flags 0x%x size %d, access Req 0x%x",
	175	pntace->type, pntace->flags, pntace->size,
	176	pntace->access_req));
	177	#endif
	178	return;
	179	}
	180
	181
	182
d12fd121	183	static void parse_dacl(struct cifs_acl pdacl, char end_of_acl)
d0d66c44 SP	184	{
	185	int i;
	186	int num_aces = 0;
	187	int acl_size;
	188	char *acl_base;
	189	struct cifs_ntace **ppntace;
	190	struct cifs_ace **ppace;
	191
	192	/* BB need to add parm so we can store the SID BB */
	193
	194	/* validate that we do not go past end of acl */
af6f4612	195	if (end_of_acl < (char *)pdacl + le16_to_cpu(pdacl->size)) {
d0d66c44 SP	196	cERROR(1, ("ACL too small to parse DACL"));
	197	return;
	198	}
	199
	200	#ifdef CONFIG_CIFS_DEBUG2
	201	cFYI(1, ("DACL revision %d size %d num aces %d",
af6f4612 SF	202	le16_to_cpu(pdacl->revision), le16_to_cpu(pdacl->size),
af6f4612 SF	203	le32_to_cpu(pdacl->num_aces)));
d0d66c44 SP	204	#endif
	205
	206	acl_base = (char *)pdacl;
	207	acl_size = sizeof(struct cifs_acl);
	208
adbc0358	209	num_aces = le32_to_cpu(pdacl->num_aces);
d0d66c44 SP	210	if (num_aces > 0) {
	211	ppntace = kmalloc(num_aces * sizeof(struct cifs_ntace *),
	212	GFP_KERNEL);
	213	ppace = kmalloc(num_aces * sizeof(struct cifs_ace *),
	214	GFP_KERNEL);
	215
d12fd121 SF	216	/* cifscred->cecount = pdacl->num_aces;
	217	cifscred->ntaces = kmalloc(num_aces *
	218	sizeof(struct cifs_ntace *), GFP_KERNEL);
	219	cifscred->aces = kmalloc(num_aces *
	220	sizeof(struct cifs_ace ), GFP_KERNEL);/
d0d66c44 SP	221
	222
	223	for (i = 0; i < num_aces; ++i) {
	224	ppntace[i] = (struct cifs_ntace *)
	225	(acl_base + acl_size);
	226	ppace[i] = (struct cifs_ace ) ((char )ppntace[i] +
	227	sizeof(struct cifs_ntace));
	228
	229	parse_ntace(ppntace[i], end_of_acl);
297647c2	230	if (end_of_acl < ((char *)ppace[i] +
ce51ae14	231	(le16_to_cpu(ppntace[i]->size) -
297647c2 SF	232	sizeof(struct cifs_ntace)))) {
	233	cERROR(1, ("ACL too small to parse ACE"));
	234	break;
	235	} else
	236	parse_ace(ppace[i], end_of_acl);
d0d66c44	237
d12fd121 SF	238	/* memcpy((void *)(&(cifscred->ntaces[i])),
	239	(void *)ppntace[i],
	240	sizeof(struct cifs_ntace));
	241	memcpy((void *)(&(cifscred->aces[i])),
	242	(void *)ppace[i],
	243	sizeof(struct cifs_ace)); */
d0d66c44 SP	244
d0d66c44 SP	245	acl_base = (char *)ppntace[i];
ce51ae14	246	acl_size = le16_to_cpu(ppntace[i]->size);
d0d66c44 SP	247	}
	248
	249	kfree(ppace);
	250	kfree(ppntace);
	251	}
	252
	253	return;
	254	}
	255
bcb02034 SF	256
	257	static int parse_sid(struct cifs_sid psid, char end_of_acl)
	258	{
d0d66c44	259
bcb02034 SF	260	/* BB need to add parm so we can store the SID BB */
	261
	262	/* validate that we do not go past end of acl */
	263	if (end_of_acl < (char *)psid + sizeof(struct cifs_sid)) {
d0d66c44	264	cERROR(1, ("ACL too small to parse SID"));
bcb02034 SF	265	return -EINVAL;
bcb02034 SF	266	}
d0d66c44	267
af6f4612	268	if (psid->num_subauth) {
bcb02034	269	#ifdef CONFIG_CIFS_DEBUG2
8f18c131	270	int i;
d0d66c44 SP	271	cFYI(1, ("SID revision %d num_auth %d First subauth 0x%x",
d0d66c44 SP	272	psid->revision, psid->num_subauth, psid->sub_auth[0]));
bcb02034	273
af6f4612	274	for (i = 0; i < psid->num_subauth; i++) {
d0d66c44	275	cFYI(1, ("SID sub_auth[%d]: 0x%x ", i,
297647c2	276	le32_to_cpu(psid->sub_auth[i])));
d0d66c44 SP	277	}
d0d66c44 SP	278
d12fd121	279	/* BB add length check to make sure that we do not have huge
d0d66c44	280	num auths and therefore go off the end */
d12fd121	281	cFYI(1, ("RID 0x%x",
af6f4612	282	le32_to_cpu(psid->sub_auth[psid->num_subauth-1])));
bcb02034	283	#endif
d0d66c44 SP	284	}
d0d66c44 SP	285
bcb02034 SF	286	return 0;
	287	}
	288
d0d66c44	289
bcb02034 SF	290	/* Convert CIFS ACL to POSIX form */
	291	int parse_sec_desc(struct cifs_ntsd *pntsd, int acl_len)
	292	{
d0d66c44	293	int rc;
bcb02034 SF	294	struct cifs_sid owner_sid_ptr, group_sid_ptr;
bcb02034 SF	295	struct cifs_acl dacl_ptr; / no need for SACL ptr */
bcb02034 SF	296	char end_of_acl = ((char )pntsd) + acl_len;
	297
	298	owner_sid_ptr = (struct cifs_sid )((char )pntsd +
af6f4612	299	le32_to_cpu(pntsd->osidoffset));
bcb02034	300	group_sid_ptr = (struct cifs_sid )((char )pntsd +
af6f4612	301	le32_to_cpu(pntsd->gsidoffset));
bcb02034	302	dacl_ptr = (struct cifs_acl )((char )pntsd +
af6f4612	303	le32_to_cpu(pntsd->dacloffset));
bcb02034 SF	304	#ifdef CONFIG_CIFS_DEBUG2
	305	cFYI(1, ("revision %d type 0x%x ooffset 0x%x goffset 0x%x "
	306	"sacloffset 0x%x dacloffset 0x%x",
af6f4612 SF	307	pntsd->revision, pntsd->type, le32_to_cpu(pntsd->osidoffset),
	308	le32_to_cpu(pntsd->gsidoffset),
	309	le32_to_cpu(pntsd->sacloffset),
ce51ae14	310	le32_to_cpu(pntsd->dacloffset)));
bcb02034 SF	311	#endif
	312	rc = parse_sid(owner_sid_ptr, end_of_acl);
	313	if (rc)
	314	return rc;
	315
	316	rc = parse_sid(group_sid_ptr, end_of_acl);
	317	if (rc)
	318	return rc;
	319
d0d66c44 SP	320	parse_dacl(dacl_ptr, end_of_acl);
d0d66c44 SP	321
bcb02034 SF	322	/* cifscred->uid = owner_sid_ptr->rid;
	323	cifscred->gid = group_sid_ptr->rid;
	324	memcpy((void )(&(cifscred->osid)), (void )owner_sid_ptr,
	325	sizeof (struct cifs_sid));
	326	memcpy((void )(&(cifscred->gsid)), (void )group_sid_ptr,
	327	sizeof (struct cifs_sid)); */
	328
297647c2	329
bcb02034 SF	330	return (0);
bcb02034 SF	331	}
297647c2	332	#endif /* CONFIG_CIFS_EXPERIMENTAL */