From e412ac4971d27ea84f3d63ce425c6ab2d6a67f23 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Wed, 20 Jun 2007 12:23:30 +0200 Subject: x86_64: Fix readahead/sync_file_range/fadvise64 compat calls Correctly convert the u64 arguments from 32bit to 64bit. Pointed out by Heiko Carstens. I guess this proves Linus' theory that nobody uses the more exotic Linux specific syscalls. It wasn't discovered by a user. Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- arch/x86_64/ia32/sys_ia32.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'arch/x86_64/ia32/sys_ia32.c') diff --git a/arch/x86_64/ia32/sys_ia32.c b/arch/x86_64/ia32/sys_ia32.c index 200fdde18d9..99a78a3cce7 100644 --- a/arch/x86_64/ia32/sys_ia32.c +++ b/arch/x86_64/ia32/sys_ia32.c @@ -860,3 +860,22 @@ long sys32_lookup_dcookie(u32 addr_low, u32 addr_high, return sys_lookup_dcookie(((u64)addr_high << 32) | addr_low, buf, len); } +asmlinkage ssize_t sys32_readahead(int fd, unsigned off_lo, unsigned off_hi, size_t count) +{ + return sys_readahead(fd, ((u64)off_hi << 32) | off_lo, count); +} + +asmlinkage long sys32_sync_file_range(int fd, unsigned off_low, unsigned off_hi, + unsigned n_low, unsigned n_hi, int flags) +{ + return sys_sync_file_range(fd, + ((u64)off_hi << 32) | off_low, + ((u64)n_hi << 32) | n_low, flags); +} + +asmlinkage long sys32_fadvise64(int fd, unsigned offset_lo, unsigned offset_hi, size_t len, + int advice) +{ + return sys_fadvise64_64(fd, ((u64)offset_hi << 32) | offset_lo, + len, advice); +} -- cgit v1.2.3