Path: utzoo!utgpu!water!watmath!clyde!att!rutgers!mailrus!ames!pasteur!ucbvax!NUSVM.BITNET!GBOPOLY1
From: GBOPOLY1@NUSVM.BITNET (fclim)
Newsgroups: comp.sys.apollo
Subject: gethostname (was: gpr_$borrow mode and ^q)
Message-ID: <8809151145.AA14821@umix.cc.umich.edu>
Date: 15 Sep 88 11:24:58 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 39
X-Unparsable-Date: Thu, 15 Sep 88 19:18:16 SST

hi,
      it looks like i will be answering one of my questions in an
earlier inquiry.  previously, i wrote:

>     my program also needs to write to a file in /tmp.  i need the
>full absolute pathname of this file right from the network root //.
>so i use the unix system call, gethostname(host, strlen(host)).
>but this returns -1 and *host == NULL.
>
>     before adding the above code to my program, i used hostname(1).
>at a csh level, i issued
>           % hostname
>           wm
>so i expect gethostname(host, strlen(host)) to return 0 and put
>"wm" into host.
>
>     when we set up our network, we use the aegis commands like
>uctnode and ctnode.  we did not use hostname.

i fixed this by using name_$get_path().  suppose my filename is
in buf:
            char bar[256];
            sprintf(bar, "/tmp/lock-%s", pp->pw_name);
then the following
            char foo[256];
            short len;
            name_$get_path(bar, (short)strlen(bar), foo, len, status);
            printf("%sn", foo);
will produce
            //wm/sys/node_data/tmp/lock-fclim
(the output is actually in upper case; i'm too lazy here to shift.)
since we have crl /tmp `node_data/tmp on node //wm.


fclim          --- gbopoly1 % nusvm.bitnet @ cunyvm.cuny.edu
computer centre
singapore polytechnic
dover road
singapore 0513.