> Hi,
>        I am porting the some code of solaris on qnx following system calls are
>  not supported in qnx:
> 
> 1     updwtmp 
> 
> 2    ptsname 
> 
> 3    unlockpt 
> 
>    Please provide me the name of QNX system call for the same.
> 


ptsname and unlockpt are supported by 6.4 and I am not sure when they are added. They are not in document so that is a 
bug. Just check libc.a you will find them and headers are in stdlib.h, it seems they are in Posix spec.
updwtmp I didn't find but you could reference telnetd source code to see how it did. It is not posix function so...