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/* $Id$ */
/*
*
* Copyright (C) 2002 David Mazieres (dm@uun.org)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
*/
#include "async.h"
void
pipe2str (int fd, cbs cb, int *fdp, strbuf *sb)
{
if (!sb) {
sb = New strbuf ();
make_async (fd);
fdcb (fd, selread, wrap (pipe2str, fd, cb, fdp, sb));
}
int n;
if (fdp && *fdp < 0) {
char *buf = sb->tosuio ()->getspace (8192);
n = readfd (fd, buf, 8192, fdp);
if (n > 0)
sb->tosuio ()->print (buf, n);
}
else
n = sb->tosuio ()->input (fd);
if (!n)
(*cb) (*sb);
else if (n < 0 && errno != EAGAIN)
(*cb) (NULL);
else
return;
fdcb (fd, selread, NULL);
close (fd);
delete sb;
}
void
chldrun (cbi chld, cbs cb)
{
int fds[2];
if (pipe (fds) < 0)
(*cb) (NULL);
switch (afork ()) {
case -1:
(*cb) (NULL);
return;
case 0:
close (fds[0]);
(*chld) (fds[1]);
_exit (0);
}
close (fds[1]);
pipe2str (fds[0], cb);
}
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