Commit e54a5dfb authored by Al Viro's avatar Al Viro Committed by Linus Torvalds
Browse files

[PATCH] uml: fix signal frame copy_user 



The copy_user stuff in the signal frame code was broke.

Signed-off-by: default avatarJeff Dike <jdike@addtoit.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 3b52166c

arch/um/sys-i386/signal.c

+1 −1
Original line number Diff line number Diff line
@@ -122,9 +122,9 @@ int copy_sc_from_user_tt(struct sigcontext *to, struct sigcontext *from, 
	int err;



	to_fp = to->fpstate;

	from_fp = from->fpstate;

	sigs = to->oldmask;

	err = copy_from_user(to, from, sizeof(*to));

	from_fp = to->fpstate;

	to->oldmask = sigs;

	to->fpstate = to_fp;

	if(to_fp != NULL)

arch/um/sys-x86_64/signal.c

+24 −17
Original line number Diff line number Diff line
@@ -109,10 +109,13 @@ int copy_sc_from_user_tt(struct sigcontext *to, struct sigcontext *from, 
	int err;



	to_fp = to->fpstate;

       from_fp = from->fpstate;

	sigs = to->oldmask;

	err = copy_from_user(to, from, sizeof(*to));

	from_fp = to->fpstate;

	to->fpstate = to_fp;

	to->oldmask = sigs;

	if(to_fp != NULL)

		err |= copy_from_user(to_fp, from_fp, fpsize);

	return(err);

}
@@ -125,6 +128,10 @@ int copy_sc_to_user_tt(struct sigcontext *to, struct _fpstate *fp, 
	to_fp = (fp ? fp : (struct _fpstate *) (to + 1));

	from_fp = from->fpstate;

	err = copy_to_user(to, from, sizeof(*to));

	if(from_fp != NULL){

		err |= copy_to_user(&to->fpstate, &to_fp, sizeof(to->fpstate));

		err |= copy_to_user(to_fp, from_fp, fpsize);

	}

	return(err);

}