mes/lib/gnu/exec-startup-get-data.c

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/* -*-comment-start: "//";comment-end:""-*-
* GNU Mes --- Maxwell Equations of Software
* Copyright © 2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
*
* This file is part of GNU Mes.
*
* GNU Mes 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 3 of the License, or (at
* your option) any later version.
*
* GNU Mes 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 GNU Mes. If not, see <http://www.gnu.org/licenses/>.
*/
#include <gnu/syscall.h>
static void
mach_startup_info2hurd_startup_data (struct mach_msg_startup_info *info,
struct hurd_startup_data *data)
{
data->flags = info->flags;
data->dtable = info->dtable;
data->dtable_count = info->dtableType.msgtl_number;
data->argp = info->argv;
data->arg_size = info->argvType.msgtl_number;
data->envp = info->envp;
data->env_size = info->envpType.msgtl_number;
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data->portarray = info->portarray;
data->portarray_count = info->portarrayType.msgtl_number;
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data->intarray = info->intarray;
data->intarray_count = info->intarrayType.msgtl_number;
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data->stack_base = info->stack_base;
data->stack_count = info->stack_size;
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data->phdr = info->phdr;
data->phdr_count = info->phdr_size;
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data->user_entry = info->user_entry;
}
kern_return_t
__exec_startup_get_data (mach_port_t bootstrap, struct hurd_startup_data *data)
{
union message
{
mach_msg_header_t header;
struct mach_msg_startup_info info;
};
union message message;
message.header.msgh_size = sizeof (struct mach_msg);
kern_return_t result = __syscall_get (bootstrap, SYS__exec_startup_get_info,
&message.header, sizeof (message));
mach_startup_info2hurd_startup_data (&message.info, data);
return result;
}