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387 lines
9.5 KiB
387 lines
9.5 KiB
/* |
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* Copyright (c) 2000-2005 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_LINUX__ |
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#define __XFS_LINUX__ |
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#include <linux/types.h> |
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/* |
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* Kernel specific type declarations for XFS |
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*/ |
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typedef signed char __int8_t; |
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typedef unsigned char __uint8_t; |
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typedef signed short int __int16_t; |
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typedef unsigned short int __uint16_t; |
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typedef signed int __int32_t; |
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typedef unsigned int __uint32_t; |
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typedef signed long long int __int64_t; |
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typedef unsigned long long int __uint64_t; |
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typedef __uint32_t inst_t; /* an instruction */ |
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typedef __s64 xfs_off_t; /* <file offset> type */ |
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typedef unsigned long long xfs_ino_t; /* <inode> type */ |
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typedef __s64 xfs_daddr_t; /* <disk address> type */ |
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typedef char * xfs_caddr_t; /* <core address> type */ |
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typedef __u32 xfs_dev_t; |
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typedef __u32 xfs_nlink_t; |
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/* __psint_t is the same size as a pointer */ |
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#if (BITS_PER_LONG == 32) |
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typedef __int32_t __psint_t; |
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typedef __uint32_t __psunsigned_t; |
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#elif (BITS_PER_LONG == 64) |
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typedef __int64_t __psint_t; |
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typedef __uint64_t __psunsigned_t; |
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#else |
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#error BITS_PER_LONG must be 32 or 64 |
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#endif |
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#include "xfs_types.h" |
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#include "kmem.h" |
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#include "mrlock.h" |
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#include "uuid.h" |
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#include <linux/semaphore.h> |
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#include <linux/mm.h> |
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#include <linux/kernel.h> |
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#include <linux/blkdev.h> |
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#include <linux/slab.h> |
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#include <linux/crc32c.h> |
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#include <linux/module.h> |
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#include <linux/mutex.h> |
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#include <linux/file.h> |
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#include <linux/swap.h> |
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#include <linux/errno.h> |
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#include <linux/sched.h> |
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#include <linux/bitops.h> |
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#include <linux/major.h> |
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#include <linux/pagemap.h> |
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#include <linux/vfs.h> |
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#include <linux/seq_file.h> |
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#include <linux/init.h> |
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#include <linux/list.h> |
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#include <linux/proc_fs.h> |
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#include <linux/sort.h> |
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#include <linux/cpu.h> |
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#include <linux/notifier.h> |
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#include <linux/delay.h> |
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#include <linux/log2.h> |
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#include <linux/spinlock.h> |
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#include <linux/random.h> |
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#include <linux/ctype.h> |
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#include <linux/writeback.h> |
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#include <linux/capability.h> |
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#include <linux/kthread.h> |
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#include <linux/freezer.h> |
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#include <linux/list_sort.h> |
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#include <linux/ratelimit.h> |
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#include <asm/page.h> |
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#include <asm/div64.h> |
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#include <asm/param.h> |
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#include <asm/uaccess.h> |
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#include <asm/byteorder.h> |
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#include <asm/unaligned.h> |
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#include "xfs_fs.h" |
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#include "xfs_stats.h" |
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#include "xfs_sysctl.h" |
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#include "xfs_iops.h" |
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#include "xfs_aops.h" |
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#include "xfs_super.h" |
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#include "xfs_cksum.h" |
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#include "xfs_buf.h" |
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#include "xfs_message.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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/* |
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* Feature macros (disable/enable) |
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*/ |
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#ifdef CONFIG_SMP |
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#define HAVE_PERCPU_SB /* per cpu superblock counters are a 2.6 feature */ |
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#else |
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#undef HAVE_PERCPU_SB /* per cpu superblock counters are a 2.6 feature */ |
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#endif |
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#define irix_sgid_inherit xfs_params.sgid_inherit.val |
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#define irix_symlink_mode xfs_params.symlink_mode.val |
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#define xfs_panic_mask xfs_params.panic_mask.val |
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#define xfs_error_level xfs_params.error_level.val |
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#define xfs_syncd_centisecs xfs_params.syncd_timer.val |
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#define xfs_stats_clear xfs_params.stats_clear.val |
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#define xfs_inherit_sync xfs_params.inherit_sync.val |
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#define xfs_inherit_nodump xfs_params.inherit_nodump.val |
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#define xfs_inherit_noatime xfs_params.inherit_noatim.val |
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#define xfs_inherit_nosymlinks xfs_params.inherit_nosym.val |
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#define xfs_rotorstep xfs_params.rotorstep.val |
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#define xfs_inherit_nodefrag xfs_params.inherit_nodfrg.val |
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#define xfs_fstrm_centisecs xfs_params.fstrm_timer.val |
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#define xfs_eofb_secs xfs_params.eofb_timer.val |
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#define current_cpu() (raw_smp_processor_id()) |
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#define current_pid() (current->pid) |
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#define current_test_flags(f) (current->flags & (f)) |
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#define current_set_flags_nested(sp, f) \ |
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(*(sp) = current->flags, current->flags |= (f)) |
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#define current_clear_flags_nested(sp, f) \ |
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(*(sp) = current->flags, current->flags &= ~(f)) |
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#define current_restore_flags_nested(sp, f) \ |
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(current->flags = ((current->flags & ~(f)) | (*(sp) & (f)))) |
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#define spinlock_destroy(lock) |
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#define NBBY 8 /* number of bits per byte */ |
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/* |
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* Size of block device i/o is parameterized here. |
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* Currently the system supports page-sized i/o. |
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*/ |
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#define BLKDEV_IOSHIFT PAGE_CACHE_SHIFT |
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#define BLKDEV_IOSIZE (1<<BLKDEV_IOSHIFT) |
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/* number of BB's per block device block */ |
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#define BLKDEV_BB BTOBB(BLKDEV_IOSIZE) |
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#define ENOATTR ENODATA /* Attribute not found */ |
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#define EWRONGFS EINVAL /* Mount with wrong filesystem type */ |
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#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */ |
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#define EFSBADCRC EBADMSG /* Bad CRC detected */ |
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#define SYNCHRONIZE() barrier() |
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#define __return_address __builtin_return_address(0) |
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#define XFS_PROJID_DEFAULT 0 |
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#define MAXPATHLEN 1024 |
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#define MIN(a,b) (min(a,b)) |
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#define MAX(a,b) (max(a,b)) |
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#define howmany(x, y) (((x)+((y)-1))/(y)) |
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static inline void delay(long ticks) |
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{ |
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schedule_timeout_uninterruptible(ticks); |
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} |
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/* |
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* XFS wrapper structure for sysfs support. It depends on external data |
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* structures and is embedded in various internal data structures to implement |
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* the XFS sysfs object heirarchy. Define it here for broad access throughout |
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* the codebase. |
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*/ |
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struct xfs_kobj { |
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struct kobject kobject; |
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struct completion complete; |
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}; |
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/* Kernel uid/gid conversion. These are used to convert to/from the on disk |
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* uid_t/gid_t types to the kuid_t/kgid_t types that the kernel uses internally. |
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* The conversion here is type only, the value will remain the same since we |
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* are converting to the init_user_ns. The uid is later mapped to a particular |
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* user namespace value when crossing the kernel/user boundary. |
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*/ |
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static inline __uint32_t xfs_kuid_to_uid(kuid_t uid) |
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{ |
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return from_kuid(&init_user_ns, uid); |
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} |
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static inline kuid_t xfs_uid_to_kuid(__uint32_t uid) |
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{ |
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return make_kuid(&init_user_ns, uid); |
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} |
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static inline __uint32_t xfs_kgid_to_gid(kgid_t gid) |
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{ |
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return from_kgid(&init_user_ns, gid); |
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} |
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static inline kgid_t xfs_gid_to_kgid(__uint32_t gid) |
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{ |
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return make_kgid(&init_user_ns, gid); |
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} |
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/* |
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* Various platform dependent calls that don't fit anywhere else |
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*/ |
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#define xfs_sort(a,n,s,fn) sort(a,n,s,fn,NULL) |
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#define xfs_stack_trace() dump_stack() |
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/* Move the kernel do_div definition off to one side */ |
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#if defined __i386__ |
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/* For ia32 we need to pull some tricks to get past various versions |
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* of the compiler which do not like us using do_div in the middle |
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* of large functions. |
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*/ |
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static inline __u32 xfs_do_div(void *a, __u32 b, int n) |
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{ |
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__u32 mod; |
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switch (n) { |
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case 4: |
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mod = *(__u32 *)a % b; |
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*(__u32 *)a = *(__u32 *)a / b; |
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return mod; |
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case 8: |
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{ |
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unsigned long __upper, __low, __high, __mod; |
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__u64 c = *(__u64 *)a; |
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__upper = __high = c >> 32; |
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__low = c; |
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if (__high) { |
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__upper = __high % (b); |
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__high = __high / (b); |
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} |
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asm("divl %2":"=a" (__low), "=d" (__mod):"rm" (b), "0" (__low), "1" (__upper)); |
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asm("":"=A" (c):"a" (__low),"d" (__high)); |
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*(__u64 *)a = c; |
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return __mod; |
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} |
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} |
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/* NOTREACHED */ |
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return 0; |
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} |
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/* Side effect free 64 bit mod operation */ |
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static inline __u32 xfs_do_mod(void *a, __u32 b, int n) |
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{ |
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switch (n) { |
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case 4: |
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return *(__u32 *)a % b; |
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case 8: |
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{ |
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unsigned long __upper, __low, __high, __mod; |
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__u64 c = *(__u64 *)a; |
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__upper = __high = c >> 32; |
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__low = c; |
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if (__high) { |
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__upper = __high % (b); |
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__high = __high / (b); |
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} |
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asm("divl %2":"=a" (__low), "=d" (__mod):"rm" (b), "0" (__low), "1" (__upper)); |
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asm("":"=A" (c):"a" (__low),"d" (__high)); |
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return __mod; |
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} |
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} |
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/* NOTREACHED */ |
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return 0; |
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} |
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#else |
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static inline __u32 xfs_do_div(void *a, __u32 b, int n) |
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{ |
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__u32 mod; |
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switch (n) { |
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case 4: |
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mod = *(__u32 *)a % b; |
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*(__u32 *)a = *(__u32 *)a / b; |
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return mod; |
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case 8: |
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mod = do_div(*(__u64 *)a, b); |
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return mod; |
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} |
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/* NOTREACHED */ |
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return 0; |
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} |
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/* Side effect free 64 bit mod operation */ |
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static inline __u32 xfs_do_mod(void *a, __u32 b, int n) |
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{ |
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switch (n) { |
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case 4: |
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return *(__u32 *)a % b; |
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case 8: |
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{ |
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__u64 c = *(__u64 *)a; |
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return do_div(c, b); |
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} |
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} |
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/* NOTREACHED */ |
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return 0; |
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} |
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#endif |
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#undef do_div |
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#define do_div(a, b) xfs_do_div(&(a), (b), sizeof(a)) |
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#define do_mod(a, b) xfs_do_mod(&(a), (b), sizeof(a)) |
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static inline __uint64_t roundup_64(__uint64_t x, __uint32_t y) |
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{ |
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x += y - 1; |
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do_div(x, y); |
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return x * y; |
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} |
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static inline __uint64_t howmany_64(__uint64_t x, __uint32_t y) |
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{ |
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x += y - 1; |
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do_div(x, y); |
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return x; |
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} |
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/* ARM old ABI has some weird alignment/padding */ |
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#if defined(__arm__) && !defined(__ARM_EABI__) |
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#define __arch_pack __attribute__((packed)) |
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#else |
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#define __arch_pack |
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#endif |
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#define ASSERT_ALWAYS(expr) \ |
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(unlikely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) |
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#ifdef DEBUG |
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#define ASSERT(expr) \ |
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(unlikely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) |
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#ifndef STATIC |
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# define STATIC noinline |
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#endif |
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#else /* !DEBUG */ |
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#ifdef XFS_WARN |
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#define ASSERT(expr) \ |
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(unlikely(expr) ? (void)0 : asswarn(#expr, __FILE__, __LINE__)) |
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#ifndef STATIC |
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# define STATIC static noinline |
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#endif |
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#else /* !DEBUG && !XFS_WARN */ |
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#define ASSERT(expr) ((void)0) |
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#ifndef STATIC |
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# define STATIC static noinline |
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#endif |
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#endif /* XFS_WARN */ |
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#endif /* DEBUG */ |
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#endif /* __XFS_LINUX__ */
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