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/* Run exec_exec in a forked process.
Copyright (C) 2008 Free Software Foundation, Inc.
Written by FlĂvio Cruz <flaviocruz@gmail.com>
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <sys/types.h>
#include <sys/wait.h>
#include <stdlib.h>
#include <hurd.h>
#include <hurd/exec.h>
#include <unistd.h>
pid_t
do_exec_exec (file_t execserver,
mach_port_t file,
mach_msg_type_name_t filePoly,
mach_port_t oldtask,
int flags,
data_t argv,
mach_msg_type_number_t argvCnt,
data_t envp,
mach_msg_type_number_t envpCnt,
portarray_t dtable,
mach_msg_type_name_t dtablePoly,
mach_msg_type_number_t dtableCnt,
portarray_t portarray,
mach_msg_type_name_t portarrayPoly,
mach_msg_type_number_t portarrayCnt,
intarray_t intarray,
mach_msg_type_number_t intarrayCnt,
mach_port_array_t deallocnames,
mach_msg_type_number_t deallocnamesCnt,
mach_port_array_t destroynames,
mach_msg_type_number_t destroynamesCnt)
{
pid_t pid = fork ();
unsigned i;
if (pid == 0)
{ /* child */
error_t err = 0;
pid_t parent = getppid ();
task_t parent_task = pid2task (parent);
mach_msg_type_name_t foo;
mach_port_t new_execserver;
mach_port_t file_copy;
err = mach_port_extract_right (parent_task, execserver,
MACH_MSG_TYPE_COPY_SEND, &new_execserver,
&foo);
if (!err)
{
err = mach_port_extract_right (parent_task, file,
MACH_MSG_TYPE_MOVE_SEND, &file_copy,
&foo);
}
if (!err)
{
err = exec_exec (new_execserver, file_copy, filePoly,
oldtask, flags, argv, argvCnt,
envp, envpCnt, dtable, dtablePoly,
dtableCnt, portarray, portarrayPoly,
portarrayCnt, intarray, intarrayCnt,
deallocnames, deallocnamesCnt,
destroynames, destroynamesCnt);
}
mach_port_deallocate (mach_task_self (), parent_task);
mach_port_deallocate (mach_task_self (), file_copy);
mach_port_deallocate (mach_task_self (), oldtask);
for (i = 0; i < dtableCnt; ++i)
{
mach_port_deallocate (mach_task_self (), dtable[i]);
}
for (i = 0; i < portarrayCnt; ++i)
{
mach_port_deallocate (mach_task_self (), portarray[i]);
}
exit (err);
}
mach_port_deallocate (mach_task_self (), oldtask);
for (i = 0; i < dtableCnt; ++i)
{
mach_port_deallocate (mach_task_self (), dtable[i]);
}
for (i = 0; i < portarrayCnt; ++i)
{
mach_port_deallocate (mach_task_self (), portarray[i]);
}
return (pid);
}
int
exec_finished (pid_t pid, int *status)
{
int ret = waitpid (pid, status, WNOHANG);
if (ret > 0)
{
*status = WEXITSTATUS (*status);
}
return (ret > 0);
}
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