diff options
Diffstat (limited to 'sysdeps/mach/hurd/ioctl.c')
| -rw-r--r-- | sysdeps/mach/hurd/ioctl.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/sysdeps/mach/hurd/ioctl.c b/sysdeps/mach/hurd/ioctl.c index ac8e8040ee..12b21d36fc 100644 --- a/sysdeps/mach/hurd/ioctl.c +++ b/sysdeps/mach/hurd/ioctl.c @@ -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; |