From 932602e238329da99f8482c1b721549531fbfe7f Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Tue, 4 Mar 2014 16:07:52 +0100 Subject: fs/compat: convert to COMPAT_SYSCALL_DEFINE with changing parameter types Some fs compat system calls have unsigned long parameters instead of compat_ulong_t. In order to allow the COMPAT_SYSCALL_DEFINE macro generate code that performs proper zero and sign extension convert all 64 bit parameters their corresponding 32 bit counterparts. compat_sys_io_getevents() is a bit different: the non-compat version has signed parameters for the "min_nr" and "nr" parameters while the compat version has unsigned parameters. So change this as well. For all practical purposes this shouldn't make any difference (doesn't fix a real bug). Also introduce a generic compat_aio_context_t type which can be used everywhere. The access_ok() check within compat_sys_io_getevents() got also removed since the non-compat sys_io_getevents() should be able to handle everything anyway. Signed-off-by: Heiko Carstens --- fs/compat_ioctl.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'fs/compat_ioctl.c') diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c index 3881610b6438..e82289047272 100644 --- a/fs/compat_ioctl.c +++ b/fs/compat_ioctl.c @@ -1538,9 +1538,10 @@ static int compat_ioctl_check_table(unsigned int xcmd) return ioctl_pointer[i] == xcmd; } -asmlinkage long compat_sys_ioctl(unsigned int fd, unsigned int cmd, - unsigned long arg) +COMPAT_SYSCALL_DEFINE3(ioctl, unsigned int, fd, unsigned int, cmd, + compat_ulong_t, arg32) { + unsigned long arg = arg32; struct fd f = fdget(fd); int error = -EBADF; if (!f.file) -- cgit v1.2.1