*/
#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"
-int cifs_removexattr(struct dentry * direntry, const char * name)
+#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 * name,
- const void * value, size_t size, int flags)
+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 * name,
- void * value, size_t size)
+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 * ea_data, size_t ea_size)
+ssize_t cifs_listxattr(struct dentry * direntry, char * data, size_t buf_size)
{
ssize_t rc = -EOPNOTSUPP;
#ifdef CONFIG_CIFS_XATTR
struct cifsTconInfo *pTcon;
struct super_block * sb;
char * full_path;
+
if(direntry == NULL)
return -EIO;
if(direntry->d_inode == NULL)
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 dosattributes as pseudo xattr */
+ /* 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,ea_data,ea_size,cifs_sb->local_nls);
+ 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;
git://git.onelab.eu / linux-2.6.git / blobdiff