From bb578426253ab9950cc20b4e5dd6aefb5500144f Mon Sep 17 00:00:00 2001 From: Gennady Sharapov Date: Mon, 7 Nov 2005 00:58:50 -0800 Subject: [PATCH] uml: separate libc-dependent uaccess code The serial UML OS-abstraction layer patch (um/kernel dir). This moves all systemcalls from uaccess_user.c file under os-Linux dir Signed-off-by: Gennady Sharapov Signed-off-by: Jeff Dike Cc: Paolo Giarrusso Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/um/kernel/uaccess.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 arch/um/kernel/uaccess.c (limited to 'arch/um/kernel/uaccess.c') diff --git a/arch/um/kernel/uaccess.c b/arch/um/kernel/uaccess.c new file mode 100644 index 000000000000..054e3de0784e --- /dev/null +++ b/arch/um/kernel/uaccess.c @@ -0,0 +1,30 @@ +/* + * Copyright (C) 2001 Chris Emerson (cemerson@chiark.greenend.org.uk) + * Copyright (C) 2001, 2002 Jeff Dike (jdike@karaya.com) + * Licensed under the GPL + */ + +/* These are here rather than tt/uaccess.c because skas mode needs them in + * order to do SIGBUS recovery when a tmpfs mount runs out of room. + */ + +#include +#include "os.h" + +void __do_copy(void *to, const void *from, int n) +{ + memcpy(to, from, n); +} + + +int __do_copy_to_user(void *to, const void *from, int n, + void **fault_addr, void **fault_catcher) +{ + unsigned long fault; + int faulted; + + fault = __do_user_copy(to, from, n, fault_addr, fault_catcher, + __do_copy, &faulted); + if(!faulted) return(0); + else return(n - (fault - (unsigned long) to)); +} -- cgit v1.2.3-55-g7522