[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;
                                                                                     
	down(&sb->s_vfs_rename_sem);
	full_path = build_path_from_dentry(direntry);
	up(&sb->s_vfs_rename_sem);
	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);
	}
remove_ea_exit:
	if (full_path)
		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;

	down(&sb->s_vfs_rename_sem);
	full_path = build_path_from_dentry(direntry);
	up(&sb->s_vfs_rename_sem);
	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"));
		if(full_path)
			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);
	} 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);
	} 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);
			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);
			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:
	if (full_path)
		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;

	down(&sb->s_vfs_rename_sem);
	full_path = build_path_from_dentry(direntry);
	up(&sb->s_vfs_rename_sem);
	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);
	} 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);
	} 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);
#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);
#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:
	if (full_path)
		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;

	down(&sb->s_vfs_rename_sem);
	full_path = build_path_from_dentry(direntry);
	up(&sb->s_vfs_rename_sem);
	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);

	if (full_path)
		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
65	down(&sb->s_vfs_rename_sem);
66	full_path = build_path_from_dentry(direntry);
67	up(&sb->s_vfs_rename_sem);
68	if(full_path == NULL) {
69	FreeXid(xid);
70	return -ENOMEM;
71	}
72	if(ea_name == NULL) {
73	cFYI(1,("Null xattr names not supported"));
74	} else if(strncmp(ea_name,CIFS_XATTR_USER_PREFIX,5)
75	&& (strncmp(ea_name,CIFS_XATTR_OS2_PREFIX,4))) {
76	cFYI(1,("illegal xattr namespace %s (only user namespace supported)",ea_name));
77	/* BB what if no namespace prefix? */
78	/* Should we just pass them to server, except for
79	system and perhaps security prefixes? */
80	} else {
81	if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
82	goto remove_ea_exit;
83
84	ea_name+=5; /* skip past user. prefix */
85	rc = CIFSSMBSetEA(xid,pTcon,full_path,ea_name,NULL,
86	(__u16)0, cifs_sb->local_nls);
87	}
88	remove_ea_exit:
89	if (full_path)
90	kfree(full_path);
91	FreeXid(xid);
92	#endif
93	return rc;
94	}
95
96	int cifs_setxattr(struct dentry * direntry, const char * ea_name,
97	const void * ea_value, size_t value_size, int flags)
98	{
99	int rc = -EOPNOTSUPP;
100	#ifdef CONFIG_CIFS_XATTR
101	int xid;
102	struct cifs_sb_info *cifs_sb;
103	struct cifsTconInfo *pTcon;
104	struct super_block * sb;
105	char * full_path;
106
107	if(direntry == NULL)
108	return -EIO;
109	if(direntry->d_inode == NULL)
110	return -EIO;
111	sb = direntry->d_inode->i_sb;
112	if(sb == NULL)
113	return -EIO;
114	xid = GetXid();
115
116	cifs_sb = CIFS_SB(sb);
117	pTcon = cifs_sb->tcon;
118
119	down(&sb->s_vfs_rename_sem);
120	full_path = build_path_from_dentry(direntry);
121	up(&sb->s_vfs_rename_sem);
122	if(full_path == NULL) {
123	FreeXid(xid);
124	return -ENOMEM;
125	}
126	/* return dos attributes as pseudo xattr */
127	/* return alt name if available as pseudo attr */
128
129	/* if proc/fs/cifs/streamstoxattr is set then
130	search server for EAs or streams to
131	returns as xattrs */
132	if(value_size > MAX_EA_VALUE_SIZE) {
133	cFYI(1,("size of EA value too large"));
134	if(full_path)
135	kfree(full_path);
136	FreeXid(xid);
137	return -EOPNOTSUPP;
138	}
139
140	if(ea_name == NULL) {
141	cFYI(1,("Null xattr names not supported"));
142	} else if(strncmp(ea_name,CIFS_XATTR_USER_PREFIX,5) == 0) {
143	if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
144	goto set_ea_exit;
145	if(strncmp(ea_name,CIFS_XATTR_DOS_ATTRIB,14) == 0) {
146	cFYI(1,("attempt to set cifs inode metadata"));
147	}
148	ea_name += 5; /* skip past user. prefix */
149	rc = CIFSSMBSetEA(xid,pTcon,full_path,ea_name,ea_value,
150	(__u16)value_size, cifs_sb->local_nls);
151	} else if(strncmp(ea_name, CIFS_XATTR_OS2_PREFIX,4) == 0) {
152	if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
153	goto set_ea_exit;
154
155	ea_name += 4; /* skip past os2. prefix */
156	rc = CIFSSMBSetEA(xid,pTcon,full_path,ea_name,ea_value,
157	(__u16)value_size, cifs_sb->local_nls);
158	} else {
159	int temp;
160	temp = strncmp(ea_name,POSIX_ACL_XATTR_ACCESS,
161	strlen(POSIX_ACL_XATTR_ACCESS));
162	if (temp == 0) {
163	#ifdef CONFIG_CIFS_POSIX
1da0c78b SF	164	if(sb->s_flags & MS_POSIXACL)
	165	rc = CIFSSMBSetPosixACL(xid, pTcon,full_path,
	166	ea_value, (const int)value_size,
	167	ACL_TYPE_ACCESS,cifs_sb->local_nls);
1da177e4 LT	168	cFYI(1,("set POSIX ACL rc %d",rc));
	169	#else
	170	cFYI(1,("set POSIX ACL not supported"));
	171	#endif
	172	} else if(strncmp(ea_name,POSIX_ACL_XATTR_DEFAULT,strlen(POSIX_ACL_XATTR_DEFAULT)) == 0) {
	173	#ifdef CONFIG_CIFS_POSIX
1da0c78b SF	174	if(sb->s_flags & MS_POSIXACL)
	175	rc = CIFSSMBSetPosixACL(xid, pTcon,full_path,
	176	ea_value, (const int)value_size,
	177	ACL_TYPE_DEFAULT, cifs_sb->local_nls);
1da177e4 LT	178	cFYI(1,("set POSIX default ACL rc %d",rc));
	179	#else
	180	cFYI(1,("set default POSIX ACL not supported"));
	181	#endif
	182	} else {
	183	cFYI(1,("illegal xattr request %s (only user namespace supported)",ea_name));
	184	/* BB what if no namespace prefix? */
	185	/* Should we just pass them to server, except for
	186	system and perhaps security prefixes? */
	187	}
	188	}
	189
	190	set_ea_exit:
	191	if (full_path)
	192	kfree(full_path);
	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
	222	down(&sb->s_vfs_rename_sem);
	223	full_path = build_path_from_dentry(direntry);
	224	up(&sb->s_vfs_rename_sem);
	225	if(full_path == NULL) {
	226	FreeXid(xid);
	227	return -ENOMEM;
	228	}
	229	/* return dos attributes as pseudo xattr */
	230	/* return alt name if available as pseudo attr */
	231	if(ea_name == NULL) {
	232	cFYI(1,("Null xattr names not supported"));
	233	} else if(strncmp(ea_name,CIFS_XATTR_USER_PREFIX,5) == 0) {
	234	if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
	235	goto get_ea_exit;
	236
	237	if(strncmp(ea_name,CIFS_XATTR_DOS_ATTRIB,14) == 0) {
	238	cFYI(1,("attempt to query cifs inode metadata"));
	239	/* revalidate/getattr then populate from inode */
	240	} /* BB add else when above is implemented */
	241	ea_name += 5; /* skip past user. prefix */
242	rc = CIFSSMBQueryEA(xid,pTcon,full_path,ea_name,ea_value,
243	buf_size, cifs_sb->local_nls);
244	} else if(strncmp(ea_name, CIFS_XATTR_OS2_PREFIX,4) == 0) {
245	if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_XATTR)
246	goto get_ea_exit;
247
248	ea_name += 4; /* skip past os2. prefix */
249	rc = CIFSSMBQueryEA(xid,pTcon,full_path,ea_name,ea_value,
250	buf_size, cifs_sb->local_nls);
251	} else if(strncmp(ea_name,POSIX_ACL_XATTR_ACCESS,strlen(POSIX_ACL_XATTR_ACCESS)) == 0) {
252	#ifdef CONFIG_CIFS_POSIX
1da0c78b SF	253	if(sb->s_flags & MS_POSIXACL)
1da0c78b SF	254	rc = CIFSSMBGetPosixACL(xid, pTcon, full_path,
1da177e4 LT	255	ea_value, buf_size, ACL_TYPE_ACCESS,
	256	cifs_sb->local_nls);
	257	#else
	258	cFYI(1,("query POSIX ACL not supported yet"));
	259	#endif /* CONFIG_CIFS_POSIX */
	260	} else if(strncmp(ea_name,POSIX_ACL_XATTR_DEFAULT,strlen(POSIX_ACL_XATTR_DEFAULT)) == 0) {
	261	#ifdef CONFIG_CIFS_POSIX
1da0c78b SF	262	if(sb->s_flags & MS_POSIXACL)
1da0c78b SF	263	rc = CIFSSMBGetPosixACL(xid, pTcon, full_path,
1da177e4 LT	264	ea_value, buf_size, ACL_TYPE_DEFAULT,
	265	cifs_sb->local_nls);
	266	#else
	267	cFYI(1,("query POSIX default ACL not supported yet"));
	268	#endif
	269	} else if(strncmp(ea_name,
	270	CIFS_XATTR_TRUSTED_PREFIX,XATTR_TRUSTED_PREFIX_LEN) == 0) {
	271	cFYI(1,("Trusted xattr namespace not supported yet"));
	272	} else if(strncmp(ea_name,
	273	CIFS_XATTR_SECURITY_PREFIX,XATTR_SECURITY_PREFIX_LEN) == 0) {
	274	cFYI(1,("Security xattr namespace not supported yet"));
	275	} else {
	276	cFYI(1,("illegal xattr name request %s (only user namespace supported)",ea_name));
	277	}
	278
	279	/* We could add an additional check for streams ie
	280	if proc/fs/cifs/streamstoxattr is set then
	281	search server for EAs or streams to
	282	returns as xattrs */
	283
	284	if(rc == -EINVAL)
	285	rc = -EOPNOTSUPP;
	286
	287	get_ea_exit:
	288	if (full_path)
	289	kfree(full_path);
	290	FreeXid(xid);
	291	#endif
	292	return rc;
	293	}
	294
	295	ssize_t cifs_listxattr(struct dentry * direntry, char * data, size_t buf_size)
	296	{
	297	ssize_t rc = -EOPNOTSUPP;
	298	#ifdef CONFIG_CIFS_XATTR
	299	int xid;
	300	struct cifs_sb_info *cifs_sb;
	301	struct cifsTconInfo *pTcon;
	302	struct super_block * sb;
	303	char * full_path;
	304
	305	if(direntry == NULL)
	306	return -EIO;
	307	if(direntry->d_inode == NULL)
	308	return -EIO;
	309	sb = direntry->d_inode->i_sb;
	310	if(sb == NULL)
	311	return -EIO;
	312	xid = GetXid();
	313
	314	cifs_sb = CIFS_SB(sb);
	315	pTcon = cifs_sb->tcon;
	316
	317	down(&sb->s_vfs_rename_sem);
	318	full_path = build_path_from_dentry(direntry);
	319	up(&sb->s_vfs_rename_sem);
	320	if(full_path == NULL) {
	321	FreeXid(xid);
	322	return -ENOMEM;
	323	}
	324	/* return dos attributes as pseudo xattr */
	325	/* return alt name if available as pseudo attr */
	326
	327	/* if proc/fs/cifs/streamstoxattr is set then
328	search server for EAs or streams to
329	returns as xattrs */
330	rc = CIFSSMBQAllEAs(xid,pTcon,full_path,data,buf_size,
331	cifs_sb->local_nls);
332
333	if (full_path)
334	kfree(full_path);
335	FreeXid(xid);
336	#endif
337	return rc;
338	}