[PATCH] cifs: Only send POSIX ACL calls to server if server claims to support that capability bit

Signed-off-by: Steve French (sfrench@us.ibm.com)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

fs/cifs/xattr.c

@@ -161,18 +161,20 @@ int cifs_setxattr(struct dentry * direntry, const char * ea_name,
 			strlen(POSIX_ACL_XATTR_ACCESS));
 		if (temp == 0) {
 #ifdef CONFIG_CIFS_POSIX
-			rc = CIFSSMBSetPosixACL(xid, pTcon,full_path,ea_value,
-				(const int)value_size, ACL_TYPE_ACCESS,
-				cifs_sb->local_nls);
+			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
-			rc = CIFSSMBSetPosixACL(xid, pTcon,full_path,ea_value,
-				(const int)value_size, ACL_TYPE_DEFAULT,
-				cifs_sb->local_nls);
+			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"));
@@ -248,6 +250,7 @@ ssize_t cifs_getxattr(struct dentry * direntry, const char * ea_name,
 			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);
@@ -256,6 +259,7 @@ ssize_t cifs_getxattr(struct dentry * direntry, const char * ea_name,
 #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);