#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." /* BB should check for this someday */
+/* also note could add check for security prefix XATTR_SECURITY_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)) {
+ 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 {
+ ea_name+=5; /* skip past user. prefix */
+ rc = CIFSSMBSetEA(xid,pTcon,full_path,ea_name,NULL,
+ (__u16)0, cifs_sb->local_nls);
+ }
+ if (full_path)
+ 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;
+
+ 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)) {
+ 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 {
+ ea_name+=5; /* skip past user. prefix */
+ rc = CIFSSMBSetEA(xid,pTcon,full_path,ea_name,ea_value,
+ (__u16)value_size, cifs_sb->local_nls);
+ }
+ if (full_path)
+ 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;
+
+ 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(strncmp(ea_name,CIFS_XATTR_USER_PREFIX,5)) {
+ 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? */
+ } else {
+ /* We could add a check here
+ if proc/fs/cifs/streamstoxattr is set then
+ search server for EAs or streams to
+ returns as xattrs */
+ ea_name+=5; /* skip past user. */
+ rc = CIFSSMBQueryEA(xid,pTcon,full_path,ea_name,ea_value,
+ buf_size, cifs_sb->local_nls);
+ }
+ if (full_path)
+ 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)
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);
+
+ if (full_path)
+ kfree(full_path);
FreeXid(xid);
#endif
return rc;
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