Applies to: 

Samba 4.2 and later. 


Question: 

Why does Samba report its OS as Windows when it is running on a Unix / Linux OS? 
 

[ckelly@centos7-1 ~]$ smbclient -U ckelly //centos7-1/Samba-Select
Enter ckelly's password:
Domain=[ALWAYS] OS=[Windows 6.1] Server=[Samba 4.2.10]
smb: \>

Answer: 

This is due to Samba 4.2.x and later codes native_os = "Windows %d.%d" while Samba 4.1.x and older uses native_os = "Unix". Please see below for clarification.
This is a Samba issue and Centrify does not have any control over this. 

 

Samba-4.2.x, the push_signature() uses native_os = "Windows %d.%d" 
==============
samba-4.2.x:
static int push_signature(uint8 **outbuf)
{
	char *lanman;
	int result, tmp;
	fstring native_os;

	result = 0;

	fstr_sprintf(native_os, "Windows %d.%d", SAMBA_MAJOR_NBT_ANNOUNCE_VERSION,
		SAMBA_MINOR_NBT_ANNOUNCE_VERSION);

	tmp = message_push_string(outbuf, native_os, STR_TERMINATE);

  ...
}
==============

while samba-4.1.x uses native_os = "Unix"   
==========
static int push_signature(uint8 **outbuf)
{
	char *lanman;
	int result, tmp;

	result = 0;

	tmp = message_push_string(outbuf, "Unix", STR_TERMINATE);

	...
}
================