mirrors/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2024-12-01 13:43:35 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

1999-01-24 Roland McGrath <roland@baalperazim.frob.com>

Browse Source 
* sysdeps/mach/hurd/ioctl.c: Include <hurd/ioctls.defs>. 
(__ioctl): Use IOC_MSGID macro.
This commit is contained in:
Roland McGrath 1999-01-25 08:42:15 +00:00
parent b710a6e220
commit d7440f640e
1 changed files with 4 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
sysdeps/mach/hurd/ioctl.c
View File

@ -1,4 +1,4 @@
/* Copyright (C) 1992, 93, 94, 95, 96, 97 Free Software Foundation, Inc.
/* Copyright (C) 1992, 93, 94, 95, 96, 97, 99 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -28,6 +28,8 @@
#include <hurd/ioctl.h>
#include <mach/mig_support.h>
#include <hurd/ioctls.defs>
#define typesize(type) (1 << (type))
@ -144,17 +146,7 @@ __ioctl (int fd, unsigned long int request, ...)
/* Compute the Mach message ID for the RPC from the group and command
parts of the ioctl request. */
msgid = 100000 + ((_IOC_GROUP (request) - 'f') * 4000); /* Base subsystem */
/* Because of MiG's poorly chosen algorithm of adding 100 to a request
msgid to produce the reply msgid, we cannot just add the command part
of the ioctl request to the subsystem base msgid. For ioctl requests
past 99, we must skip blocks of 100 msgids to allow for the reply
msgids corresponding to the earlier requests. */
if (_IOC_COMMAND (request) >= 100)
msgid += 100;
if (_IOC_COMMAND (request) >= 200)
msgid += 100;
msgid += _IOC_COMMAND (request);
msgid = IOC_MSGID (request);
if (_IOC_INOUT (request) & IOC_IN)
{