ef14f0c157
This patch rips out the XFS ACL handling code and uses the generic fs/posix_acl.c code instead. The ondisk format is of course left unchanged. This also introduces the same ACL caching all other Linux filesystems do by adding pointers to the acl and default acl in struct xfs_inode. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Eric Sandeen <sandeen@sandeen.net>
137 lines
4.1 KiB
C
137 lines
4.1 KiB
C
/*
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* Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __XFS_ARCH_H__
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#define __XFS_ARCH_H__
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#ifndef XFS_BIG_INUMS
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# error XFS_BIG_INUMS must be defined true or false
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#endif
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#ifdef __KERNEL__
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#include <asm/byteorder.h>
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#ifdef __BIG_ENDIAN
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#define XFS_NATIVE_HOST 1
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#else
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#undef XFS_NATIVE_HOST
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#endif
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#else /* __KERNEL__ */
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#if __BYTE_ORDER == __BIG_ENDIAN
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#define XFS_NATIVE_HOST 1
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#else
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#undef XFS_NATIVE_HOST
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#endif
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#ifdef XFS_NATIVE_HOST
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#define cpu_to_be16(val) ((__force __be16)(__u16)(val))
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#define cpu_to_be32(val) ((__force __be32)(__u32)(val))
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#define cpu_to_be64(val) ((__force __be64)(__u64)(val))
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#define be16_to_cpu(val) ((__force __u16)(__be16)(val))
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#define be32_to_cpu(val) ((__force __u32)(__be32)(val))
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#define be64_to_cpu(val) ((__force __u64)(__be64)(val))
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#else
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#define cpu_to_be16(val) ((__force __be16)__swab16((__u16)(val)))
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#define cpu_to_be32(val) ((__force __be32)__swab32((__u32)(val)))
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#define cpu_to_be64(val) ((__force __be64)__swab64((__u64)(val)))
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#define be16_to_cpu(val) (__swab16((__force __u16)(__be16)(val)))
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#define be32_to_cpu(val) (__swab32((__force __u32)(__be32)(val)))
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#define be64_to_cpu(val) (__swab64((__force __u64)(__be64)(val)))
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#endif
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static inline void be16_add_cpu(__be16 *a, __s16 b)
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{
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*a = cpu_to_be16(be16_to_cpu(*a) + b);
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}
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static inline void be32_add_cpu(__be32 *a, __s32 b)
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{
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*a = cpu_to_be32(be32_to_cpu(*a) + b);
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}
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static inline void be64_add_cpu(__be64 *a, __s64 b)
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{
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*a = cpu_to_be64(be64_to_cpu(*a) + b);
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}
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#endif /* __KERNEL__ */
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/*
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* get and set integers from potentially unaligned locations
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*/
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#define INT_GET_UNALIGNED_16_BE(pointer) \
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((__u16)((((__u8*)(pointer))[0] << 8) | (((__u8*)(pointer))[1])))
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#define INT_SET_UNALIGNED_16_BE(pointer,value) \
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{ \
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((__u8*)(pointer))[0] = (((value) >> 8) & 0xff); \
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((__u8*)(pointer))[1] = (((value) ) & 0xff); \
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}
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/*
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* In directories inode numbers are stored as unaligned arrays of unsigned
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* 8bit integers on disk.
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*
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* For v1 directories or v2 directories that contain inode numbers that
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* do not fit into 32bit the array has eight members, but the first member
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* is always zero:
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*
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* |unused|48-55|40-47|32-39|24-31|16-23| 8-15| 0- 7|
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*
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* For v2 directories that only contain entries with inode numbers that fit
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* into 32bits a four-member array is used:
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*
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* |24-31|16-23| 8-15| 0- 7|
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*/
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#define XFS_GET_DIR_INO4(di) \
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(((__u32)(di).i[0] << 24) | ((di).i[1] << 16) | ((di).i[2] << 8) | ((di).i[3]))
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#define XFS_PUT_DIR_INO4(from, di) \
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do { \
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(di).i[0] = (((from) & 0xff000000ULL) >> 24); \
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(di).i[1] = (((from) & 0x00ff0000ULL) >> 16); \
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(di).i[2] = (((from) & 0x0000ff00ULL) >> 8); \
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(di).i[3] = ((from) & 0x000000ffULL); \
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} while (0)
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#define XFS_DI_HI(di) \
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(((__u32)(di).i[1] << 16) | ((di).i[2] << 8) | ((di).i[3]))
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#define XFS_DI_LO(di) \
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(((__u32)(di).i[4] << 24) | ((di).i[5] << 16) | ((di).i[6] << 8) | ((di).i[7]))
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#define XFS_GET_DIR_INO8(di) \
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(((xfs_ino_t)XFS_DI_LO(di) & 0xffffffffULL) | \
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((xfs_ino_t)XFS_DI_HI(di) << 32))
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#define XFS_PUT_DIR_INO8(from, di) \
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do { \
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(di).i[0] = 0; \
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(di).i[1] = (((from) & 0x00ff000000000000ULL) >> 48); \
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(di).i[2] = (((from) & 0x0000ff0000000000ULL) >> 40); \
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(di).i[3] = (((from) & 0x000000ff00000000ULL) >> 32); \
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(di).i[4] = (((from) & 0x00000000ff000000ULL) >> 24); \
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(di).i[5] = (((from) & 0x0000000000ff0000ULL) >> 16); \
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(di).i[6] = (((from) & 0x000000000000ff00ULL) >> 8); \
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(di).i[7] = ((from) & 0x00000000000000ffULL); \
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} while (0)
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#endif /* __XFS_ARCH_H__ */
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