[Bug libc/6700] utmpname(3) returns interger but man page says void and doesnot returns with failure if file not found.

["halesh dot s at gmail dot com" <sourceware-bugzilla at sourceware dot org>]

------- Additional Comments From halesh dot s at gmail dot com  2008-06-27 12:37 -------
Hi Ulrich,

In the link 
http://www.gnu.org/software/libtool/manual/libc/Manipulating-the-Database.html

It has mentioned that 
"The utmpname function returns a value of 0 if the new name was successfully 
stored, and a value of -1 to indicate an error. Note that utmpname does not try 
to open the database, and that therefore the return value does not say anything 
about whether the database can be successfully opened."

This means utmpname(3) never reports faiure if database doesnot exists.

In readutmp.c of coreutils it has mentioned 
"Solaris' utmpname returns 1 upon success -- which is contrary to what the GNU 
libc version does.  In addition, older GNU libc versions are actually void."

But GNU libc utmpname returns -1 on failure, May it returns differen values on 
success I think it does not causes any contrary with Solaris utmpname failure.

Even we did not open database can we include the database existance checking, 
Will it causes any effects. 

As mentioned above this may resolve who(1) problem, and which helps in 
processing other commands based on who(1) o/p.

Thanks,
Halesh

-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=6700

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