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2000-12-06 Roland McGrath <roland@frob.com>

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* sysdeps/mach/hurd/ioctl.c (__ioctl): Don't clobber ARG as we copy in
	argument data, since it will be used to copy out too (for INOUT).
	Reported by Marcus Brinkmann <marcus@gnu.org>.
	* sysdeps/mach/hurd/ioctl.c: Include <stdint.h>.
	(__ioctl): Use uintptr_t instead of unsigned long int.
This commit is contained in:
Roland McGrath 2000-12-07 00:05:30 +00:00
parent 9cf90923ca
commit cde4d97bf2
1 changed files with 10 additions and 5 deletions
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15
sysdeps/mach/hurd/ioctl.c
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@ -1,4 +1,4 @@
/* Copyright (C) 1992, 93, 94, 95, 96, 97, 99 Free Software Foundation, Inc.
/* Copyright (C) 1992,93,94,95,96,97,99,2000 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
@ -25,6 +25,7 @@
#include <mach/notify.h>
#include <assert.h>
#include <string.h>
#include <stdint.h>
#include <hurd/ioctl.h>
#include <mach/mig_support.h>
@ -82,6 +83,10 @@ __ioctl (int fd, unsigned long int request, ...)
if (_IOC_INOUT (request) & IOC_IN)
{
/* We don't want to advance ARG since it will be used to copy out
too if IOC_OUT is also set. */
void *argptr = arg;
/* Pack an argument into the message buffer. */
void in (unsigned int count, enum __ioctl_datum type)
{
@ -90,10 +95,10 @@ __ioctl (int fd, unsigned long int request, ...)
void *p = &t[1];
const size_t len = count * typesize ((unsigned int) type);
*t = io2mach_type (count, type);
memcpy (p, arg, len);
arg += len;
p = __mempcpy (p, argptr, len);
argptr += len;
p += len;
p = (void *) (((unsigned long int) p + sizeof (*t) - 1)
p = (void *) (((uintptr_t) p + sizeof (*t) - 1)
& ~(sizeof (*t) - 1));
t = p;
}
@ -232,7 +237,7 @@ __ioctl (int fd, unsigned long int request, ...)
memcpy (store, t, len);
if (update != NULL)
*update += len;
t = (void *) (((unsigned long int) t + len + sizeof (*t) - 1)
t = (void *) (((uintptr_t) t + len + sizeof (*t) - 1)
& ~(sizeof (*t) - 1));
}
return 0;