[Qemu-devel] Fwd: envlist_setenv...

[Davide]

What does this loop in main?

for (wrk = environ; *wrk != NULL; wrk++) {
(void) envlist_setenv(envlist, *wrk);
}

Re: [Qemu-devel] Fwd: envlist_setenv...

[陳韋任]

On Tue, Jan 17, 2012 at 09:54:36PM +0100, Davide wrote:
> 
> What does this loop in main?
> 
> for (wrk = environ; *wrk != NULL; wrk++) {
>  (void) envlist_setenv(envlist, *wrk);
>  }

  Seems the return value (error code) of envlist_setenv is ignored here... 

-- 
Wei-Ren Chen (陳韋任)
Computer Systems Lab, Institute of Information Science,
Academia Sinica, Taiwan (R.O.C.)
Tel:886-2-2788-3799 #1667
Homepage: http://people.cs.nctu.edu.tw/~chenwj

Re: [Qemu-devel] Fwd: envlist_setenv...

[陳韋任]

Hi,

> What does this loop in main?
> 
> for (wrk = environ; *wrk != NULL; wrk++) {
>  (void) envlist_setenv(envlist, *wrk);
>  }

  You can check envlist.[ch] first. I think what the loop does is copying host
environ (user environment. HOME, SHELL, PATH...etc) to struct envlist 
(envlist.c).
Latter on, QEMU calls function envlist_to_environ to transform envlist to target
environ which is used by the guest application.

HTH,
chenwj

-- 
Wei-Ren Chen (陳韋任)
Computer Systems Lab, Institute of Information Science,
Academia Sinica, Taiwan (R.O.C.)
Tel:886-2-2788-3799 #1667
Homepage: http://people.cs.nctu.edu.tw/~chenwj