[linux.git] / fs / cifs / xattr.c

/*
 *   fs/cifs/xattr.c
 *
 *   Copyright (c) International Business Machines  Corp., 2003
 *   Author(s): Steve French ([email protected])
 *
 *   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 <linux/posix_acl_xattr.h>
#include "cifsfs.h"
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
#include "cifs_debug.h"

#define MAX_EA_VALUE_SIZE 65535
#define CIFS_XATTR_DOS_ATTRIB "user.DosAttrib"
#define CIFS_XATTR_USER_PREFIX "user."
#define CIFS_XATTR_SYSTEM_PREFIX "system."
#define CIFS_XATTR_OS2_PREFIX "os2."
#define CIFS_XATTR_SECURITY_PREFIX ".security"
#define CIFS_XATTR_TRUSTED_PREFIX "trusted."
#define XATTR_TRUSTED_PREFIX_LEN  8
#define XATTR_SECURITY_PREFIX_LEN 9
/* BB need to add server (Samba e.g) support for security and trusted prefix */
  

int cifs_removexattr(struct dentry * direntry, const char * ea_name)
{
	int rc = -EOPNOTSUPP;
#ifdef CONFIG_CIFS_XATTR
	int xid;
	struct cifs_sb_info *cifs_sb;
	struct cifsTconInfo *pTcon;
	struct super_block * sb;
	char * full_path;
                                                                                     
	if(direntry == NULL)
		return -EIO;
	if(direntry->d_inode == NULL)
		return -EIO;
	sb = direntry->d_inode->i_sb;
	if(sb == NULL)
		return -EIO;
	xid = GetXid();
                                                                                     
	cifs_sb = CIFS_SB(sb);
	pTcon = cifs_sb->tcon;
                                                                                     
	full_path = build_path_from_dentry(direntry);
	if(full_path == NULL) {
		FreeXid(xid);
		return -ENOMEM;
	}
	if(ea_name == NULL) {
		cFYI(1,("Null xattr names not supported"));
	} else if(strncmp(ea_name,CIFS_XATTR_USER_PREFIX,5)
		&& (strncmp(ea_name,CIFS_XATTR_OS2_PREFIX,4))) {
		cFYI(1,("illegal xattr namespace %s (only user namespace supported)",ea_name));
		/* BB what if no namespace prefix? */
		/* Should we just pass them to server, except for
		system and perhaps security prefixes? */
	} else {
		if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
			goto remove_ea_exit;

		ea_name+=5; /* skip past user. prefix */
		rc = CIFSSMBSetEA(xid,pTcon,full_path,ea_name,NULL,
			(__u16)0, cifs_sb->local_nls,
			cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
	}
remove_ea_exit:
	kfree(full_path);
	FreeXid(xid);
#endif
	return rc;
}

int cifs_setxattr(struct dentry * direntry, const char * ea_name,
        const void * ea_value, size_t value_size, int flags)
{
	int rc = -EOPNOTSUPP;
#ifdef CONFIG_CIFS_XATTR
	int xid;
	struct cifs_sb_info *cifs_sb;
	struct cifsTconInfo *pTcon;
	struct super_block * sb;
	char * full_path;

	if(direntry == NULL)
		return -EIO;
	if(direntry->d_inode == NULL)
		return -EIO;
	sb = direntry->d_inode->i_sb;
	if(sb == NULL)
		return -EIO;
	xid = GetXid();

	cifs_sb = CIFS_SB(sb);
	pTcon = cifs_sb->tcon;

	full_path = build_path_from_dentry(direntry);
	if(full_path == NULL) {
		FreeXid(xid);
		return -ENOMEM;
	}
	/* return dos attributes as pseudo xattr */
	/* return alt name if available as pseudo attr */

	/* if proc/fs/cifs/streamstoxattr is set then
		search server for EAs or streams to 
		returns as xattrs */
	if(value_size > MAX_EA_VALUE_SIZE) {
		cFYI(1,("size of EA value too large"));
		kfree(full_path);
		FreeXid(xid);
		return -EOPNOTSUPP;
	}

	if(ea_name == NULL) {
		cFYI(1,("Null xattr names not supported"));
	} else if(strncmp(ea_name,CIFS_XATTR_USER_PREFIX,5) == 0) {
		if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
			goto set_ea_exit;
		if(strncmp(ea_name,CIFS_XATTR_DOS_ATTRIB,14) == 0) {
			cFYI(1,("attempt to set cifs inode metadata"));
		}
		ea_name += 5; /* skip past user. prefix */
		rc = CIFSSMBSetEA(xid,pTcon,full_path,ea_name,ea_value,
			(__u16)value_size, cifs_sb->local_nls,
			cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
	} else if(strncmp(ea_name, CIFS_XATTR_OS2_PREFIX,4) == 0) {
		if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
			goto set_ea_exit;

		ea_name += 4; /* skip past os2. prefix */
		rc = CIFSSMBSetEA(xid,pTcon,full_path,ea_name,ea_value,
			(__u16)value_size, cifs_sb->local_nls,
			cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
	} else {
		int temp; 
		temp = strncmp(ea_name,POSIX_ACL_XATTR_ACCESS,
			strlen(POSIX_ACL_XATTR_ACCESS));
		if (temp == 0) {
#ifdef CONFIG_CIFS_POSIX
			if(sb->s_flags & MS_POSIXACL)
				rc = CIFSSMBSetPosixACL(xid, pTcon,full_path,
					ea_value, (const int)value_size, 
					ACL_TYPE_ACCESS,cifs_sb->local_nls,
					cifs_sb->mnt_cifs_flags & 
						CIFS_MOUNT_MAP_SPECIAL_CHR);
			cFYI(1,("set POSIX ACL rc %d",rc));
#else
			cFYI(1,("set POSIX ACL not supported"));
#endif
		} else if(strncmp(ea_name,POSIX_ACL_XATTR_DEFAULT,strlen(POSIX_ACL_XATTR_DEFAULT)) == 0) {
#ifdef CONFIG_CIFS_POSIX
			if(sb->s_flags & MS_POSIXACL)
				rc = CIFSSMBSetPosixACL(xid, pTcon,full_path,
					ea_value, (const int)value_size, 
					ACL_TYPE_DEFAULT, cifs_sb->local_nls,
					cifs_sb->mnt_cifs_flags & 
						CIFS_MOUNT_MAP_SPECIAL_CHR);
			cFYI(1,("set POSIX default ACL rc %d",rc));
#else
			cFYI(1,("set default POSIX ACL not supported"));
#endif
		} else {
			cFYI(1,("illegal xattr request %s (only user namespace supported)",ea_name));
		  /* BB what if no namespace prefix? */
		  /* Should we just pass them to server, except for 
		  system and perhaps security prefixes? */
		}
	}

set_ea_exit:
	kfree(full_path);
	FreeXid(xid);
#endif
	return rc;
}

ssize_t cifs_getxattr(struct dentry * direntry, const char * ea_name,
         void * ea_value, size_t buf_size)
{
	ssize_t rc = -EOPNOTSUPP;
#ifdef CONFIG_CIFS_XATTR
	int xid;
	struct cifs_sb_info *cifs_sb;
	struct cifsTconInfo *pTcon;
	struct super_block * sb;
	char * full_path;

	if(direntry == NULL)
		return -EIO;
	if(direntry->d_inode == NULL)
		return -EIO;
	sb = direntry->d_inode->i_sb;
	if(sb == NULL)
		return -EIO;

	xid = GetXid();

	cifs_sb = CIFS_SB(sb);
	pTcon = cifs_sb->tcon;

	full_path = build_path_from_dentry(direntry);
	if(full_path == NULL) {
		FreeXid(xid);
		return -ENOMEM;
	}
	/* return dos attributes as pseudo xattr */
	/* return alt name if available as pseudo attr */
	if(ea_name == NULL) {
		cFYI(1,("Null xattr names not supported"));
	} else if(strncmp(ea_name,CIFS_XATTR_USER_PREFIX,5) == 0) {
		if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
			goto get_ea_exit;

		if(strncmp(ea_name,CIFS_XATTR_DOS_ATTRIB,14) == 0) {
			cFYI(1,("attempt to query cifs inode metadata"));
			/* revalidate/getattr then populate from inode */
		} /* BB add else when above is implemented */
		ea_name += 5; /* skip past user. prefix */
		rc = CIFSSMBQueryEA(xid,pTcon,full_path,ea_name,ea_value,
			buf_size, cifs_sb->local_nls,
			cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
	} else if(strncmp(ea_name, CIFS_XATTR_OS2_PREFIX,4) == 0) {
		if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
			goto get_ea_exit;

		ea_name += 4; /* skip past os2. prefix */
		rc = CIFSSMBQueryEA(xid,pTcon,full_path,ea_name,ea_value,
			buf_size, cifs_sb->local_nls,
			cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
	} else if(strncmp(ea_name,POSIX_ACL_XATTR_ACCESS,
			  strlen(POSIX_ACL_XATTR_ACCESS)) == 0) {
#ifdef CONFIG_CIFS_POSIX
		if(sb->s_flags & MS_POSIXACL)
			rc = CIFSSMBGetPosixACL(xid, pTcon, full_path,
				ea_value, buf_size, ACL_TYPE_ACCESS, 
				cifs_sb->local_nls,
				cifs_sb->mnt_cifs_flags & 
					CIFS_MOUNT_MAP_SPECIAL_CHR);
/*		else if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
			__u16 fid;
			int oplock = FALSE;
			rc = CIFSSMBOpen(xid, pTcon, full_path,
					 FILE_OPEN, GENERIC_READ, 0, &fid,
					 &oplock, NULL, cifs_sb->local_nls,
					 cifs_sb->mnt_cifs_flags &
					 CIFS_MOUNT_MAP_SPECIAL_CHR);
			if(rc == 0) {
				rc = CIFSSMBGetCIFSACL(xid, pTcon, fid,
					ea_value, buf_size,
					ACL_TYPE_ACCESS);
				CIFSSMBClose(xid, pTcon, fid)
			}
		} */  /* BB enable after fixing up return data */
                  		
#else 
		cFYI(1,("query POSIX ACL not supported yet"));
#endif /* CONFIG_CIFS_POSIX */
	} else if(strncmp(ea_name,POSIX_ACL_XATTR_DEFAULT,
			  strlen(POSIX_ACL_XATTR_DEFAULT)) == 0) {
#ifdef CONFIG_CIFS_POSIX
		if(sb->s_flags & MS_POSIXACL)
			rc = CIFSSMBGetPosixACL(xid, pTcon, full_path,
				ea_value, buf_size, ACL_TYPE_DEFAULT, 
				cifs_sb->local_nls,
				cifs_sb->mnt_cifs_flags & 
					CIFS_MOUNT_MAP_SPECIAL_CHR);
#else 
		cFYI(1,("query POSIX default ACL not supported yet"));
#endif
	} else if(strncmp(ea_name,
		  CIFS_XATTR_TRUSTED_PREFIX,XATTR_TRUSTED_PREFIX_LEN) == 0) {
		cFYI(1,("Trusted xattr namespace not supported yet"));
	} else if(strncmp(ea_name,
		  CIFS_XATTR_SECURITY_PREFIX,XATTR_SECURITY_PREFIX_LEN) == 0) {
		cFYI(1,("Security xattr namespace not supported yet"));
	} else {
		cFYI(1,("illegal xattr name request %s (only user namespace supported)",ea_name));
	}

	/* We could add an additional check for streams ie 
	    if proc/fs/cifs/streamstoxattr is set then
		search server for EAs or streams to 
		returns as xattrs */

	if(rc == -EINVAL)
		rc = -EOPNOTSUPP; 

get_ea_exit:
	kfree(full_path);
	FreeXid(xid);
#endif
	return rc;
}

ssize_t cifs_listxattr(struct dentry * direntry, char * data, size_t buf_size)
{
	ssize_t rc = -EOPNOTSUPP;
#ifdef CONFIG_CIFS_XATTR
	int xid;
	struct cifs_sb_info *cifs_sb;
	struct cifsTconInfo *pTcon;
	struct super_block * sb;
	char * full_path;

	if(direntry == NULL)
		return -EIO;
	if(direntry->d_inode == NULL)
		return -EIO;
	sb = direntry->d_inode->i_sb;
	if(sb == NULL)
		return -EIO;
	xid = GetXid();

	cifs_sb = CIFS_SB(sb);
	pTcon = cifs_sb->tcon;

	full_path = build_path_from_dentry(direntry);
	if(full_path == NULL) {
		FreeXid(xid);
		return -ENOMEM;
	}
	/* return dos attributes as pseudo xattr */
	/* return alt name if available as pseudo attr */

	/* if proc/fs/cifs/streamstoxattr is set then
		search server for EAs or streams to 
		returns as xattrs */
	rc = CIFSSMBQAllEAs(xid,pTcon,full_path,data,buf_size,
				cifs_sb->local_nls,
				cifs_sb->mnt_cifs_flags & 
					CIFS_MOUNT_MAP_SPECIAL_CHR);

	kfree(full_path);
	FreeXid(xid);
#endif
	return rc;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* fs/cifs/xattr.c
	3	*
	4	* Copyright (c) International Business Machines Corp., 2003
	5	* Author(s): Steve French ([email protected])
	6	*
	7	* This library is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU Lesser General Public License as published
	9	* by the Free Software Foundation; either version 2.1 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This library is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
	15	* the GNU Lesser General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU Lesser General Public License
	18	* along with this library; if not, write to the Free Software
	19	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	20	*/
	21
	22	#include <linux/fs.h>
	23	#include <linux/posix_acl_xattr.h>
	24	#include "cifsfs.h"
	25	#include "cifspdu.h"
	26	#include "cifsglob.h"
	27	#include "cifsproto.h"
	28	#include "cifs_debug.h"
	29
	30	#define MAX_EA_VALUE_SIZE 65535
	31	#define CIFS_XATTR_DOS_ATTRIB "user.DosAttrib"
	32	#define CIFS_XATTR_USER_PREFIX "user."
	33	#define CIFS_XATTR_SYSTEM_PREFIX "system."
	34	#define CIFS_XATTR_OS2_PREFIX "os2."
	35	#define CIFS_XATTR_SECURITY_PREFIX ".security"
	36	#define CIFS_XATTR_TRUSTED_PREFIX "trusted."
	37	#define XATTR_TRUSTED_PREFIX_LEN 8
	38	#define XATTR_SECURITY_PREFIX_LEN 9
	39	/* BB need to add server (Samba e.g) support for security and trusted prefix */
	40
	41
	42
	43	int cifs_removexattr(struct dentry * direntry, const char * ea_name)
	44	{
	45	int rc = -EOPNOTSUPP;
	46	#ifdef CONFIG_CIFS_XATTR
	47	int xid;
	48	struct cifs_sb_info *cifs_sb;
	49	struct cifsTconInfo *pTcon;
	50	struct super_block * sb;
	51	char * full_path;
	52
	53	if(direntry == NULL)
	54	return -EIO;
	55	if(direntry->d_inode == NULL)
	56	return -EIO;
	57	sb = direntry->d_inode->i_sb;
	58	if(sb == NULL)
	59	return -EIO;
	60	xid = GetXid();
	61
	62	cifs_sb = CIFS_SB(sb);
	63	pTcon = cifs_sb->tcon;
	64
1da177e4	65	full_path = build_path_from_dentry(direntry);
1da177e4 LT	66	if(full_path == NULL) {
	67	FreeXid(xid);
	68	return -ENOMEM;
	69	}
	70	if(ea_name == NULL) {
	71	cFYI(1,("Null xattr names not supported"));
	72	} else if(strncmp(ea_name,CIFS_XATTR_USER_PREFIX,5)
	73	&& (strncmp(ea_name,CIFS_XATTR_OS2_PREFIX,4))) {
	74	cFYI(1,("illegal xattr namespace %s (only user namespace supported)",ea_name));
	75	/* BB what if no namespace prefix? */
	76	/* Should we just pass them to server, except for
	77	system and perhaps security prefixes? */
	78	} else {
	79	if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
	80	goto remove_ea_exit;
	81
	82	ea_name+=5; /* skip past user. prefix */
	83	rc = CIFSSMBSetEA(xid,pTcon,full_path,ea_name,NULL,
737b758c SF	84	(__u16)0, cifs_sb->local_nls,
737b758c SF	85	cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4 LT	86	}
1da177e4 LT	87	remove_ea_exit:
f99d49ad	88	kfree(full_path);
1da177e4 LT	89	FreeXid(xid);
	90	#endif
	91	return rc;
	92	}
	93
	94	int cifs_setxattr(struct dentry * direntry, const char * ea_name,
	95	const void * ea_value, size_t value_size, int flags)
	96	{
	97	int rc = -EOPNOTSUPP;
	98	#ifdef CONFIG_CIFS_XATTR
	99	int xid;
	100	struct cifs_sb_info *cifs_sb;
	101	struct cifsTconInfo *pTcon;
	102	struct super_block * sb;
	103	char * full_path;
	104
	105	if(direntry == NULL)
	106	return -EIO;
	107	if(direntry->d_inode == NULL)
	108	return -EIO;
	109	sb = direntry->d_inode->i_sb;
	110	if(sb == NULL)
	111	return -EIO;
	112	xid = GetXid();
	113
	114	cifs_sb = CIFS_SB(sb);
	115	pTcon = cifs_sb->tcon;
	116
1da177e4	117	full_path = build_path_from_dentry(direntry);
1da177e4 LT	118	if(full_path == NULL) {
	119	FreeXid(xid);
	120	return -ENOMEM;
	121	}
	122	/* return dos attributes as pseudo xattr */
	123	/* return alt name if available as pseudo attr */
	124
	125	/* if proc/fs/cifs/streamstoxattr is set then
	126	search server for EAs or streams to
	127	returns as xattrs */
	128	if(value_size > MAX_EA_VALUE_SIZE) {
	129	cFYI(1,("size of EA value too large"));
f99d49ad	130	kfree(full_path);
1da177e4 LT	131	FreeXid(xid);
	132	return -EOPNOTSUPP;
	133	}
	134
	135	if(ea_name == NULL) {
	136	cFYI(1,("Null xattr names not supported"));
	137	} else if(strncmp(ea_name,CIFS_XATTR_USER_PREFIX,5) == 0) {
	138	if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
	139	goto set_ea_exit;
	140	if(strncmp(ea_name,CIFS_XATTR_DOS_ATTRIB,14) == 0) {
	141	cFYI(1,("attempt to set cifs inode metadata"));
	142	}
	143	ea_name += 5; /* skip past user. prefix */
	144	rc = CIFSSMBSetEA(xid,pTcon,full_path,ea_name,ea_value,
737b758c SF	145	(__u16)value_size, cifs_sb->local_nls,
737b758c SF	146	cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4 LT	147	} else if(strncmp(ea_name, CIFS_XATTR_OS2_PREFIX,4) == 0) {
	148	if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
	149	goto set_ea_exit;
	150
	151	ea_name += 4; /* skip past os2. prefix */
	152	rc = CIFSSMBSetEA(xid,pTcon,full_path,ea_name,ea_value,
737b758c SF	153	(__u16)value_size, cifs_sb->local_nls,
737b758c SF	154	cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4 LT	155	} else {
	156	int temp;
	157	temp = strncmp(ea_name,POSIX_ACL_XATTR_ACCESS,
	158	strlen(POSIX_ACL_XATTR_ACCESS));
	159	if (temp == 0) {
	160	#ifdef CONFIG_CIFS_POSIX
1da0c78b SF	161	if(sb->s_flags & MS_POSIXACL)
	162	rc = CIFSSMBSetPosixACL(xid, pTcon,full_path,
	163	ea_value, (const int)value_size,
737b758c SF	164	ACL_TYPE_ACCESS,cifs_sb->local_nls,
	165	cifs_sb->mnt_cifs_flags &
	166	CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4 LT	167	cFYI(1,("set POSIX ACL rc %d",rc));
	168	#else
	169	cFYI(1,("set POSIX ACL not supported"));
	170	#endif
	171	} else if(strncmp(ea_name,POSIX_ACL_XATTR_DEFAULT,strlen(POSIX_ACL_XATTR_DEFAULT)) == 0) {
	172	#ifdef CONFIG_CIFS_POSIX
1da0c78b SF	173	if(sb->s_flags & MS_POSIXACL)
	174	rc = CIFSSMBSetPosixACL(xid, pTcon,full_path,
	175	ea_value, (const int)value_size,
737b758c SF	176	ACL_TYPE_DEFAULT, cifs_sb->local_nls,
	177	cifs_sb->mnt_cifs_flags &
	178	CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4 LT	179	cFYI(1,("set POSIX default ACL rc %d",rc));
	180	#else
	181	cFYI(1,("set default POSIX ACL not supported"));
	182	#endif
	183	} else {
	184	cFYI(1,("illegal xattr request %s (only user namespace supported)",ea_name));
	185	/* BB what if no namespace prefix? */
	186	/* Should we just pass them to server, except for
	187	system and perhaps security prefixes? */
	188	}
	189	}
	190
	191	set_ea_exit:
f99d49ad	192	kfree(full_path);
1da177e4 LT	193	FreeXid(xid);
	194	#endif
	195	return rc;
	196	}
	197
	198	ssize_t cifs_getxattr(struct dentry * direntry, const char * ea_name,
	199	void * ea_value, size_t buf_size)
	200	{
	201	ssize_t rc = -EOPNOTSUPP;
	202	#ifdef CONFIG_CIFS_XATTR
	203	int xid;
	204	struct cifs_sb_info *cifs_sb;
	205	struct cifsTconInfo *pTcon;
	206	struct super_block * sb;
	207	char * full_path;
	208
	209	if(direntry == NULL)
	210	return -EIO;
	211	if(direntry->d_inode == NULL)
	212	return -EIO;
	213	sb = direntry->d_inode->i_sb;
	214	if(sb == NULL)
	215	return -EIO;
	216
	217	xid = GetXid();
	218
	219	cifs_sb = CIFS_SB(sb);
	220	pTcon = cifs_sb->tcon;
	221
1da177e4	222	full_path = build_path_from_dentry(direntry);
1da177e4 LT	223	if(full_path == NULL) {
	224	FreeXid(xid);
	225	return -ENOMEM;
	226	}
	227	/* return dos attributes as pseudo xattr */
	228	/* return alt name if available as pseudo attr */
	229	if(ea_name == NULL) {
	230	cFYI(1,("Null xattr names not supported"));
	231	} else if(strncmp(ea_name,CIFS_XATTR_USER_PREFIX,5) == 0) {
	232	if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
	233	goto get_ea_exit;
	234
	235	if(strncmp(ea_name,CIFS_XATTR_DOS_ATTRIB,14) == 0) {
	236	cFYI(1,("attempt to query cifs inode metadata"));
	237	/* revalidate/getattr then populate from inode */
	238	} /* BB add else when above is implemented */
	239	ea_name += 5; /* skip past user. prefix */
	240	rc = CIFSSMBQueryEA(xid,pTcon,full_path,ea_name,ea_value,
737b758c SF	241	buf_size, cifs_sb->local_nls,
737b758c SF	242	cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4 LT	243	} else if(strncmp(ea_name, CIFS_XATTR_OS2_PREFIX,4) == 0) {
	244	if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
	245	goto get_ea_exit;
	246
	247	ea_name += 4; /* skip past os2. prefix */
	248	rc = CIFSSMBQueryEA(xid,pTcon,full_path,ea_name,ea_value,
737b758c SF	249	buf_size, cifs_sb->local_nls,
737b758c SF	250	cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
0a4b92c0 SF	251	} else if(strncmp(ea_name,POSIX_ACL_XATTR_ACCESS,
0a4b92c0 SF	252	strlen(POSIX_ACL_XATTR_ACCESS)) == 0) {
1da177e4	253	#ifdef CONFIG_CIFS_POSIX
1da0c78b SF	254	if(sb->s_flags & MS_POSIXACL)
1da0c78b SF	255	rc = CIFSSMBGetPosixACL(xid, pTcon, full_path,
1da177e4	256	ea_value, buf_size, ACL_TYPE_ACCESS,
737b758c SF	257	cifs_sb->local_nls,
	258	cifs_sb->mnt_cifs_flags &
	259	CIFS_MOUNT_MAP_SPECIAL_CHR);
0a4b92c0 SF	260	/* else if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_ACL) {
	261	__u16 fid;
	262	int oplock = FALSE;
	263	rc = CIFSSMBOpen(xid, pTcon, full_path,
	264	FILE_OPEN, GENERIC_READ, 0, &fid,
	265	&oplock, NULL, cifs_sb->local_nls,
	266	cifs_sb->mnt_cifs_flags &
	267	CIFS_MOUNT_MAP_SPECIAL_CHR);
	268	if(rc == 0) {
	269	rc = CIFSSMBGetCIFSACL(xid, pTcon, fid,
	270	ea_value, buf_size,
	271	ACL_TYPE_ACCESS);
	272	CIFSSMBClose(xid, pTcon, fid)
	273	}
	274	} / / BB enable after fixing up return data */
	275
1da177e4 LT	276	#else
	277	cFYI(1,("query POSIX ACL not supported yet"));
	278	#endif /* CONFIG_CIFS_POSIX */
0a4b92c0 SF	279	} else if(strncmp(ea_name,POSIX_ACL_XATTR_DEFAULT,
0a4b92c0 SF	280	strlen(POSIX_ACL_XATTR_DEFAULT)) == 0) {
1da177e4	281	#ifdef CONFIG_CIFS_POSIX
1da0c78b SF	282	if(sb->s_flags & MS_POSIXACL)
1da0c78b SF	283	rc = CIFSSMBGetPosixACL(xid, pTcon, full_path,
1da177e4	284	ea_value, buf_size, ACL_TYPE_DEFAULT,
737b758c SF	285	cifs_sb->local_nls,
	286	cifs_sb->mnt_cifs_flags &
	287	CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4 LT	288	#else
	289	cFYI(1,("query POSIX default ACL not supported yet"));
	290	#endif
	291	} else if(strncmp(ea_name,
	292	CIFS_XATTR_TRUSTED_PREFIX,XATTR_TRUSTED_PREFIX_LEN) == 0) {
	293	cFYI(1,("Trusted xattr namespace not supported yet"));
	294	} else if(strncmp(ea_name,
	295	CIFS_XATTR_SECURITY_PREFIX,XATTR_SECURITY_PREFIX_LEN) == 0) {
	296	cFYI(1,("Security xattr namespace not supported yet"));
	297	} else {
	298	cFYI(1,("illegal xattr name request %s (only user namespace supported)",ea_name));
	299	}
	300
	301	/* We could add an additional check for streams ie
	302	if proc/fs/cifs/streamstoxattr is set then
	303	search server for EAs or streams to
	304	returns as xattrs */
	305
	306	if(rc == -EINVAL)
	307	rc = -EOPNOTSUPP;
	308
	309	get_ea_exit:
f99d49ad	310	kfree(full_path);
1da177e4 LT	311	FreeXid(xid);
	312	#endif
	313	return rc;
	314	}
	315
	316	ssize_t cifs_listxattr(struct dentry * direntry, char * data, size_t buf_size)
	317	{
	318	ssize_t rc = -EOPNOTSUPP;
	319	#ifdef CONFIG_CIFS_XATTR
	320	int xid;
	321	struct cifs_sb_info *cifs_sb;
	322	struct cifsTconInfo *pTcon;
	323	struct super_block * sb;
	324	char * full_path;
	325
	326	if(direntry == NULL)
	327	return -EIO;
	328	if(direntry->d_inode == NULL)
	329	return -EIO;
	330	sb = direntry->d_inode->i_sb;
	331	if(sb == NULL)
	332	return -EIO;
	333	xid = GetXid();
	334
	335	cifs_sb = CIFS_SB(sb);
	336	pTcon = cifs_sb->tcon;
	337
1da177e4	338	full_path = build_path_from_dentry(direntry);
1da177e4 LT	339	if(full_path == NULL) {
	340	FreeXid(xid);
	341	return -ENOMEM;
	342	}
	343	/* return dos attributes as pseudo xattr */
	344	/* return alt name if available as pseudo attr */
	345
	346	/* if proc/fs/cifs/streamstoxattr is set then
	347	search server for EAs or streams to
	348	returns as xattrs */
	349	rc = CIFSSMBQAllEAs(xid,pTcon,full_path,data,buf_size,
737b758c SF	350	cifs_sb->local_nls,
	351	cifs_sb->mnt_cifs_flags &
	352	CIFS_MOUNT_MAP_SPECIAL_CHR);
1da177e4	353
f99d49ad	354	kfree(full_path);
1da177e4 LT	355	FreeXid(xid);
	356	#endif
	357	return rc;
	358	}