From 8f9c0119d7ba94c3ad13876acc240d7f12b6d8e1 Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Wed, 19 Sep 2012 12:01:52 +0100 Subject: compat: fs: Generic compat_sys_sendfile implementation This function is used by sparc, powerpc and arm64 for compat support. The patch adds a generic implementation which calls do_sendfile() directly and avoids set_fs(). The sparc architecture has wrappers for the sign extensions while powerpc relies on the compiler to do the this. The patch adds wrappers for powerpc to handle the u32->int type conversion. compat_sys_sendfile64() can be replaced by a sys_sendfile() call since compat_loff_t has the same size as off_t on a 64-bit system. On powerpc, the patch also changes the 64-bit sendfile call from sys_sendile64 to sys_sendfile. Signed-off-by: Catalin Marinas Acked-by: David S. Miller Cc: Arnd Bergmann Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Alexander Viro Cc: Andrew Morton Signed-off-by: Al Viro --- include/linux/compat.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux') diff --git a/include/linux/compat.h b/include/linux/compat.h index 09b28b7369d7..fd4e29956d1c 100644 --- a/include/linux/compat.h +++ b/include/linux/compat.h @@ -590,6 +590,9 @@ asmlinkage ssize_t compat_sys_process_vm_writev(compat_pid_t pid, unsigned long liovcnt, const struct compat_iovec __user *rvec, unsigned long riovcnt, unsigned long flags); +asmlinkage long compat_sys_sendfile(int out_fd, int in_fd, + compat_off_t __user *offset, compat_size_t count); + #else #define is_compat_task() (0) -- cgit v1.2.3