/*

   * Copyright (c) 2000-2005 Silicon Graphics, Inc.
   * All Rights Reserved.

   *

   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License as

   * published by the Free Software Foundation.
   *

   * This program is distributed in the hope that it would be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.

   *

   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write the Free Software Foundation,
   * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

   */
  #ifndef __XFS_LINUX__
  #define __XFS_LINUX__
  
  #include <linux/types.h>

  #include <linux/uuid.h>

  
  /*

   * Kernel specific type declarations for XFS
   */

  typedef __s64			xfs_off_t;	/* <file offset> type */
  typedef unsigned long long	xfs_ino_t;	/* <inode> type */
  typedef __s64			xfs_daddr_t;	/* <disk address> type */

  typedef __u32			xfs_dev_t;
  typedef __u32			xfs_nlink_t;

  #include "xfs_types.h"

  #include "kmem.h"
  #include "mrlock.h"

  #include <linux/semaphore.h>

  #include <linux/mm.h>
  #include <linux/kernel.h>
  #include <linux/blkdev.h>
  #include <linux/slab.h>

  #include <linux/crc32c.h>

  #include <linux/module.h>

  #include <linux/mutex.h>

  #include <linux/file.h>
  #include <linux/swap.h>
  #include <linux/errno.h>

  #include <linux/sched/signal.h>

  #include <linux/bitops.h>
  #include <linux/major.h>
  #include <linux/pagemap.h>
  #include <linux/vfs.h>
  #include <linux/seq_file.h>
  #include <linux/init.h>
  #include <linux/list.h>
  #include <linux/proc_fs.h>

  #include <linux/sort.h>

  #include <linux/cpu.h>
  #include <linux/notifier.h>

  #include <linux/delay.h>

  #include <linux/log2.h>

  #include <linux/spinlock.h>

  #include <linux/random.h>

  #include <linux/ctype.h>

  #include <linux/writeback.h>

  #include <linux/capability.h>

  #include <linux/kthread.h>
  #include <linux/freezer.h>

  #include <linux/list_sort.h>

  #include <linux/ratelimit.h>

  #include <linux/rhashtable.h>

  
  #include <asm/page.h>
  #include <asm/div64.h>
  #include <asm/param.h>

  #include <linux/uaccess.h>

  #include <asm/byteorder.h>
  #include <asm/unaligned.h>

  #include "xfs_fs.h"

  #include "xfs_stats.h"
  #include "xfs_sysctl.h"
  #include "xfs_iops.h"
  #include "xfs_aops.h"
  #include "xfs_super.h"

  #include "xfs_cksum.h"

  #include "xfs_buf.h"
  #include "xfs_message.h"

  #ifdef __BIG_ENDIAN
  #define XFS_NATIVE_HOST 1
  #else
  #undef XFS_NATIVE_HOST
  #endif

  #define irix_sgid_inherit	xfs_params.sgid_inherit.val
  #define irix_symlink_mode	xfs_params.symlink_mode.val
  #define xfs_panic_mask		xfs_params.panic_mask.val
  #define xfs_error_level		xfs_params.error_level.val
  #define xfs_syncd_centisecs	xfs_params.syncd_timer.val
  #define xfs_stats_clear		xfs_params.stats_clear.val
  #define xfs_inherit_sync	xfs_params.inherit_sync.val
  #define xfs_inherit_nodump	xfs_params.inherit_nodump.val
  #define xfs_inherit_noatime	xfs_params.inherit_noatim.val

  #define xfs_inherit_nosymlinks	xfs_params.inherit_nosym.val
  #define xfs_rotorstep		xfs_params.rotorstep.val

  #define xfs_inherit_nodefrag	xfs_params.inherit_nodfrg.val

  #define xfs_fstrm_centisecs	xfs_params.fstrm_timer.val

  #define xfs_eofb_secs		xfs_params.eofb_timer.val

  #define xfs_cowb_secs		xfs_params.cowb_timer.val

  #define current_cpu()		(raw_smp_processor_id())

  #define current_pid()		(current->pid)

  #define current_test_flags(f)	(current->flags & (f))

  #define current_set_flags_nested(sp, f)		\
  		(*(sp) = current->flags, current->flags |= (f))
  #define current_clear_flags_nested(sp, f)	\
  		(*(sp) = current->flags, current->flags &= ~(f))
  #define current_restore_flags_nested(sp, f)	\
  		(current->flags = ((current->flags & ~(f)) | (*(sp) & (f))))

  #define spinlock_destroy(lock)

  #define NBBY		8		/* number of bits per byte */

  
  /*
   * Size of block device i/o is parameterized here.
   * Currently the system supports page-sized i/o.
   */

  #define	BLKDEV_IOSHIFT		PAGE_SHIFT

  #define	BLKDEV_IOSIZE		(1<<BLKDEV_IOSHIFT)
  /* number of BB's per block device block */
  #define	BLKDEV_BB		BTOBB(BLKDEV_IOSIZE)

  #define ENOATTR		ENODATA		/* Attribute not found */

  #define EWRONGFS	EINVAL		/* Mount with wrong filesystem type */
  #define EFSCORRUPTED	EUCLEAN		/* Filesystem is corrupted */

  #define EFSBADCRC	EBADMSG		/* Bad CRC detected */

  
  #define SYNCHRONIZE()	barrier()
  #define __return_address __builtin_return_address(0)

  #define XFS_PROJID_DEFAULT	0

  
  #define MIN(a,b)	(min(a,b))
  #define MAX(a,b)	(max(a,b))
  #define howmany(x, y)	(((x)+((y)-1))/(y))

  static inline void delay(long ticks)
  {
  	schedule_timeout_uninterruptible(ticks);
  }

  /*
   * XFS wrapper structure for sysfs support. It depends on external data
   * structures and is embedded in various internal data structures to implement
   * the XFS sysfs object heirarchy. Define it here for broad access throughout
   * the codebase.
   */
  struct xfs_kobj {
  	struct kobject		kobject;
  	struct completion	complete;
  };

  struct xstats {
  	struct xfsstats __percpu	*xs_stats;
  	struct xfs_kobj			xs_kobj;
  };
  
  extern struct xstats xfsstats;

  /* Kernel uid/gid conversion. These are used to convert to/from the on disk
   * uid_t/gid_t types to the kuid_t/kgid_t types that the kernel uses internally.
   * The conversion here is type only, the value will remain the same since we
   * are converting to the init_user_ns. The uid is later mapped to a particular
   * user namespace value when crossing the kernel/user boundary.
   */

  static inline uint32_t xfs_kuid_to_uid(kuid_t uid)

  {
  	return from_kuid(&init_user_ns, uid);
  }

  static inline kuid_t xfs_uid_to_kuid(uint32_t uid)

  {
  	return make_kuid(&init_user_ns, uid);
  }

  static inline uint32_t xfs_kgid_to_gid(kgid_t gid)

  {
  	return from_kgid(&init_user_ns, gid);
  }

  static inline kgid_t xfs_gid_to_kgid(uint32_t gid)

  {
  	return make_kgid(&init_user_ns, gid);
  }

  /*
   * Various platform dependent calls that don't fit anywhere else
   */

  #define xfs_sort(a,n,s,fn)	sort(a,n,s,fn,NULL)

  #define xfs_stack_trace()	dump_stack()

  /* Side effect free 64 bit mod operation */
  static inline __u32 xfs_do_mod(void *a, __u32 b, int n)
  {
  	switch (n) {
  		case 4:
  			return *(__u32 *)a % b;
  		case 8:
  			{
  			__u64	c = *(__u64 *)a;
  			return do_div(c, b);
  			}
  	}
  
  	/* NOTREACHED */
  	return 0;
  }

  #define do_mod(a, b)	xfs_do_mod(&(a), (b), sizeof(a))

  static inline uint64_t roundup_64(uint64_t x, uint32_t y)

  {
  	x += y - 1;
  	do_div(x, y);

  	return x * y;

  }

  static inline uint64_t howmany_64(uint64_t x, uint32_t y)

  {
  	x += y - 1;
  	do_div(x, y);
  	return x;
  }

  #define ASSERT_ALWAYS(expr)	\

  	(likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__))

  #ifdef DEBUG
  #define ASSERT(expr)	\

  	(likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__))

  
  #ifndef STATIC

  # define STATIC noinline

  #endif

  #else	/* !DEBUG */
  
  #ifdef XFS_WARN

  
  #define ASSERT(expr)	\

  	(likely(expr) ? (void)0 : asswarn(#expr, __FILE__, __LINE__))

  
  #ifndef STATIC

  # define STATIC static noinline
  #endif
  
  #else	/* !DEBUG && !XFS_WARN */
  
  #define ASSERT(expr)	((void)0)
  
  #ifndef STATIC
  # define STATIC static noinline

  #endif

  #endif /* XFS_WARN */

  #endif /* DEBUG */

  #ifdef CONFIG_XFS_RT

  
  /*
   * make sure we ignore the inode flag if the filesystem doesn't have a
   * configured realtime device.
   */
  #define XFS_IS_REALTIME_INODE(ip)			\
  	(((ip)->i_d.di_flags & XFS_DIFLAG_REALTIME) &&	\
  	 (ip)->i_mount->m_rtdev_targp)

  #else
  #define XFS_IS_REALTIME_INODE(ip) (0)
  #endif

  #endif /* __XFS_LINUX__ */