351 lines
9.9 KiB
C
351 lines
9.9 KiB
C
/*
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* Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 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, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* Further, this software is distributed without any warranty that it is
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* free of the rightful claim of any third person regarding infringement
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* or the like. Any license provided herein, whether implied or
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* otherwise, applies only to this software file. Patent licenses, if
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* any, provided herein do not apply to combinations of this program with
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* other software, or any other product whatsoever.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write the Free Software Foundation, Inc., 59
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* Temple Place - Suite 330, Boston MA 02111-1307, USA.
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*
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* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
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* Mountain View, CA 94043, or:
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*
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* http://www.sgi.com
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*
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* For further information regarding this notice, see:
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*
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* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
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*/
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#ifndef __XFS_FREEBSD__
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#define __XFS_FREEBSD__
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#include <xfs_config.h>
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#include <xfs_compat.h>
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/*
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* Some types are conditional depending on the target system.
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* XFS_BIG_BLKNOS needs block layer disk addresses to be 64 bits.
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* XFS_BIG_INUMS needs the VFS inode number to be 64 bits, as well
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* as requiring XFS_BIG_BLKNOS to be set.
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*/
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#define XFS_BIG_BLKNOS 1
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#define XFS_BIG_INUMS 0
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#include <xfs_types.h>
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#include <xfs_arch.h>
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#include <support/atomic.h>
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#include <support/kmem.h>
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#include <support/mrlock.h>
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#include <support/spin.h>
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#include <support/sv.h>
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#include <support/ktrace.h>
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#include <support/mutex.h>
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#include <support/rwsem.h>
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#include <support/rwlock.h>
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#include <support/sema.h>
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#include <support/debug.h>
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#include <support/move.h>
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#include <support/uuid.h>
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#include <support/time.h>
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#include <xfs_behavior.h>
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#include <xfs_cred.h>
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#include <xfs_vfs.h>
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#include <xfs_vnode.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_super.h>
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#include <xfs_fs_subr.h>
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#include <xfs_buf.h>
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#include <xfs_frw.h>
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/*
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* Feature macros (disable/enable)
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*/
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#undef HAVE_REFCACHE /* Do not use refcache. */
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#undef HAVE_SENDFILE /* sendfile(2) is available in FreeBSD. */
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#ifndef EVMS_MAJOR
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#define EVMS_MAJOR 117
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#endif
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#define restricted_chown xfs_params.restrict_chown.val
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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_probe_dmapi xfs_params.probe_dmapi.val
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#define xfs_probe_ioops xfs_params.probe_ioops.val
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#define xfs_probe_quota xfs_params.probe_quota.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_buf_timer_centisecs xfs_params.xfs_buf_timer.val
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#define xfs_buf_age_centisecs xfs_params.xfs_buf_age.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 current_cpu() smp_processor_id()
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#define current_pid() (curthread->td_proc->p_pid)
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#define NBPP PAGE_SIZE
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#define DPPSHFT (PAGE_SHIFT - 9)
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#define NDPP (1 << (PAGE_SHIFT - 9))
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#define dtop(DD) (((DD) + NDPP - 1) >> DPPSHFT)
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#define dtopt(DD) ((DD) >> DPPSHFT)
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#define dpoff(DD) ((DD) & (NDPP-1))
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#define NBBY 8 /* number of bits per byte */
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#define NBPC PAGE_SIZE /* Number of bytes per click */
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#define BPCSHIFT PAGE_SHIFT /* LOG2(NBPC) if exact */
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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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/* bytes to clicks */
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#define btoct(x) ((__psunsigned_t)(x)>>BPCSHIFT)
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#define btoc64(x) (((__uint64_t)(x)+(NBPC-1))>>BPCSHIFT)
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#define btoct64(x) ((__uint64_t)(x)>>BPCSHIFT)
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#define io_btoc(x) (((__psunsigned_t)(x)+(IO_NBPC-1))>>IO_BPCSHIFT)
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#define io_btoct(x) ((__psunsigned_t)(x)>>IO_BPCSHIFT)
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/* off_t bytes to clicks */
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#define offtoc(x) (((__uint64_t)(x)+(NBPC-1))>>BPCSHIFT)
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#define offtoct(x) ((xfs_off_t)(x)>>BPCSHIFT)
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/* clicks to off_t bytes */
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#define ctooff(x) ((xfs_off_t)(x)<<BPCSHIFT)
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/* clicks to bytes */
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#define btoct(x) ((__psunsigned_t)(x)>>BPCSHIFT)
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#define ctob64(x) ((__uint64_t)(x)<<BPCSHIFT)
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#define io_ctob(x) ((__psunsigned_t)(x)<<IO_BPCSHIFT)
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#ifndef CELL_CAPABLE
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#define FSC_NOTIFY_NAME_CHANGED(vp)
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#endif
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#ifndef ENOATTR
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#define ENOATTR ENODATA /* Attribute not found */
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#endif
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/* Note: EWRONGFS never visible outside the kernel */
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#define EWRONGFS EINVAL /* Mount with wrong filesystem type */
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/*
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* XXX EFSCORRUPTED needs a real value in errno.h. asm-i386/errno.h won't
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* return codes out of its known range in errno.
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* XXX Also note: needs to be < 1000 and fairly unique on Linux (mustn't
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* conflict with any code we use already or any code a driver may use)
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* XXX Some options (currently we do #2):
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* 1/ New error code ["Filesystem is corrupted", _after_ glibc updated]
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* 2/ 990 ["Unknown error 990"]
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* 3/ EUCLEAN ["Structure needs cleaning"]
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* 4/ Convert EFSCORRUPTED to EIO [just prior to return into userspace]
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*/
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#define EFSCORRUPTED 990 /* Filesystem is corrupted */
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#define SYNCHRONIZE() barrier()
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#define __return_address __builtin_return_address(0)
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/*
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* IRIX (BSD) quotactl makes use of separate commands for user/group,
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* whereas on Linux the syscall encodes this information into the cmd
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* field (see the QCMD macro in quota.h). These macros help keep the
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* code portable - they are not visible from the syscall interface.
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*/
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#define Q_XSETGQLIM XQM_CMD(0x8) /* set groups disk limits */
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#define Q_XGETGQUOTA XQM_CMD(0x9) /* get groups disk limits */
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/* IRIX uses a dynamic sizing algorithm (ndquot = 200 + numprocs*2) */
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/* we may well need to fine-tune this if it ever becomes an issue. */
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#define DQUOT_MAX_HEURISTIC 1024 /* NR_DQUOTS */
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#define ndquot DQUOT_MAX_HEURISTIC
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/* IRIX uses the current size of the name cache to guess a good value */
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/* - this isn't the same but is a good enough starting point for now. */
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#define DQUOT_HASH_HEURISTIC files_stat.nr_files
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/* IRIX inodes maintain the project ID also, zero this field on Linux */
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#define DEFAULT_PROJID 0
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#define dfltprid DEFAULT_PROJID
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#define FINVIS 0x0102 /* don't update timestamps - XFS */
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#define howmany(x, y) (((x)+((y)-1))/(y))
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#define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
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#define xfs_sort(a,n,s,fn) qsort(a,n,s,fn)
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static inline int xfs_itruncate_data(void *ip, xfs_off_t off) {
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printf ("xfs_itruncate_data NI\n");
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return 0;
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}
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/*
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* Juggle IRIX device numbers - still used in ondisk structures
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*/
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#define XFS_DEV_BITSMAJOR 14
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#define XFS_DEV_BITSMINOR 18
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#define XFS_DEV_MAXMAJ 0x1ff
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#define XFS_DEV_MAXMIN 0x3ffff
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#define XFS_DEV_MAJOR(dev) ((int)(((unsigned)(dev)>>XFS_DEV_BITSMINOR) \
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& XFS_DEV_MAXMAJ))
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#define XFS_DEV_MINOR(dev) ((int)((dev)&XFS_DEV_MAXMIN))
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#define XFS_MKDEV(major,minor) ((xfs_dev_t)(((major)<<XFS_DEV_BITSMINOR) \
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| (minor&XFS_DEV_MAXMIN)))
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#define XFS_DEV_TO_KDEVT(dev) mk_kdev(XFS_DEV_MAJOR(dev),XFS_DEV_MINOR(dev))
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/* Produce a kernel stack trace */
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static inline void xfs_stack_trace(void)
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{
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kdb_backtrace();
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}
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#define xfs_statvfs_fsid(statp, mp) \
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({ \
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(statp)->f_fsid.val[0] = /*dev2udev(mp->m_dev) */ 1; \
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(statp)->f_fsid.val[1] = 0; \
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})
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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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#define do_div(n, base) ({\
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int __res; \
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__res = ((__u64)(n)) % (__u32)(base); \
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(n) = ((__u64)(n)) / (__u32)(base); \
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__res; })
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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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#endif /* __XFS_FREEBSD__ */
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