cifs: Change translation of STATUS_PRIVILEGE_NOT_HELD to -EPERM

STATUS_PRIVILEGE_NOT_HELD indicates that user does not have privilege to
issue some operation, for example to create symlink.

Currently STATUS_PRIVILEGE_NOT_HELD is translated to -EIO. Change it to
-EPERM which better describe this error code.

Note that there is no ERR* code usable in ntstatus_to_dos_map[] table which
can be used to -EPERM translation, so do explicit translation in
map_smb_to_linux_error() function.

Signed-off-by: Pali Rohár <pali@kernel.org>
Acked-by: Tom Talpey <tom@talpey.com>
Acked-by: Paulo Alcantara (Red Hat) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

Author: pali

fs/smb/client/netmisc.c

@@ -313,7 +313,6 @@ static const struct {
 	ERRDOS, 2215, NT_STATUS_NO_LOGON_SERVERS}, {
 	ERRHRD, ERRgeneral, NT_STATUS_NO_SUCH_LOGON_SESSION}, {
 	ERRHRD, ERRgeneral, NT_STATUS_NO_SUCH_PRIVILEGE}, {
-	ERRDOS, ERRnoaccess, NT_STATUS_PRIVILEGE_NOT_HELD}, {
 	ERRHRD, ERRgeneral, NT_STATUS_INVALID_ACCOUNT_NAME}, {
 	ERRHRD, ERRgeneral, NT_STATUS_USER_EXISTS},
 /*	{ This NT error code was 'sqashed'
@@ -876,6 +875,8 @@ map_smb_to_linux_error(char *buf, bool logErr)
 		__u32 err = le32_to_cpu(smb->Status.CifsError);
 		if (err == (NT_STATUS_NOT_A_REPARSE_POINT))
 			rc = -ENODATA;
+		else if (err == (NT_STATUS_PRIVILEGE_NOT_HELD))
+			rc = -EPERM;
 	}
 
 	cifs_dbg(FYI, "Mapping smb error code 0x%x to POSIX err %d\n",

fs/smb/client/smb2maperror.c

@@ -380,7 +380,7 @@ static const struct status_to_posix_error smb2_error_map_table[] = {
 	{STATUS_NO_LOGON_SERVERS, -EIO, "STATUS_NO_LOGON_SERVERS"},
 	{STATUS_NO_SUCH_LOGON_SESSION, -EIO, "STATUS_NO_SUCH_LOGON_SESSION"},
 	{STATUS_NO_SUCH_PRIVILEGE, -EIO, "STATUS_NO_SUCH_PRIVILEGE"},
-	{STATUS_PRIVILEGE_NOT_HELD, -EIO, "STATUS_PRIVILEGE_NOT_HELD"},
+	{STATUS_PRIVILEGE_NOT_HELD, -EPERM, "STATUS_PRIVILEGE_NOT_HELD"},
 	{STATUS_INVALID_ACCOUNT_NAME, -EIO, "STATUS_INVALID_ACCOUNT_NAME"},
 	{STATUS_USER_EXISTS, -EIO, "STATUS_USER_EXISTS"},
 	{STATUS_NO_SUCH_USER, -EIO, "STATUS_NO_SUCH_USER"},