From 713c481519f19df9e6d90f257e7da0336b057592 Mon Sep 17 00:00:00 2001 From: Nicolas Pitre Date: Sat, 14 Jan 2006 16:35:03 +0000 Subject: [ARM] 3108/2: old ABI compat: statfs64 and fstatfs64 Patch from Nicolas Pitre struct statfs64 has extra padding with EABI growing its size from 84 to 88. This struct is now __attribute__((packed,aligned(4))) with a small assembly wrapper to force the sz argument to 84 if it is 88 to avoid copying the extra padding over user space memory unexpecting it. Signed-off-by: Nicolas Pitre Signed-off-by: Russell King --- include/asm-arm/statfs.h | 38 +++++++++++++++++++++++++++++++++++++- 1 file changed, 37 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/asm-arm/statfs.h b/include/asm-arm/statfs.h index e81f82783b8..a02e6a8c3d7 100644 --- a/include/asm-arm/statfs.h +++ b/include/asm-arm/statfs.h @@ -1,6 +1,42 @@ #ifndef _ASMARM_STATFS_H #define _ASMARM_STATFS_H -#include +#ifndef __KERNEL_STRICT_NAMES +# include +typedef __kernel_fsid_t fsid_t; +#endif + +struct statfs { + __u32 f_type; + __u32 f_bsize; + __u32 f_blocks; + __u32 f_bfree; + __u32 f_bavail; + __u32 f_files; + __u32 f_ffree; + __kernel_fsid_t f_fsid; + __u32 f_namelen; + __u32 f_frsize; + __u32 f_spare[5]; +}; + +/* + * With EABI there is 4 bytes of padding added to this structure. + * Let's pack it so the padding goes away to simplify dual ABI support. + * Note that user space does NOT have to pack this structure. + */ +struct statfs64 { + __u32 f_type; + __u32 f_bsize; + __u64 f_blocks; + __u64 f_bfree; + __u64 f_bavail; + __u64 f_files; + __u64 f_ffree; + __kernel_fsid_t f_fsid; + __u32 f_namelen; + __u32 f_frsize; + __u32 f_spare[5]; +} __attribute__ ((packed,aligned(4))); #endif -- cgit v1.2.3