diff options
Diffstat (limited to 'sys/gnu/fs/xfs/FreeBSD/xfs_freebsd.h')
| -rw-r--r-- | sys/gnu/fs/xfs/FreeBSD/xfs_freebsd.h | 356 |
1 files changed, 356 insertions, 0 deletions
diff --git a/sys/gnu/fs/xfs/FreeBSD/xfs_freebsd.h b/sys/gnu/fs/xfs/FreeBSD/xfs_freebsd.h new file mode 100644 index 000000000000..d7a30d6ecd0d --- /dev/null +++ b/sys/gnu/fs/xfs/FreeBSD/xfs_freebsd.h @@ -0,0 +1,356 @@ +/* + * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 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. + * + * Further, this software is distributed without any warranty that it is + * free of the rightful claim of any third person regarding infringement + * or the like. Any license provided herein, whether implied or + * otherwise, applies only to this software file. Patent licenses, if + * any, provided herein do not apply to combinations of this program with + * other software, or any other product whatsoever. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write the Free Software Foundation, Inc., 59 + * Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, + * Mountain View, CA 94043, or: + * + * http://www.sgi.com + * + * For further information regarding this notice, see: + * + * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ + */ +#ifndef __XFS_FREEBSD__ +#define __XFS_FREEBSD__ + +#include <xfs_config.h> +#include <xfs_compat.h> + +/* + * Some types are conditional depending on the target system. + * XFS_BIG_BLKNOS needs block layer disk addresses to be 64 bits. + * XFS_BIG_INUMS needs the VFS inode number to be 64 bits, as well + * as requiring XFS_BIG_BLKNOS to be set. + */ +#define XFS_BIG_BLKNOS 1 +#define XFS_BIG_INUMS 0 + +#include <xfs_types.h> +#include <xfs_arch.h> + +#include <support/atomic.h> +#include <support/kmem.h> +#include <support/mrlock.h> +#include <support/spin.h> +#include <support/sv.h> +#include <support/ktrace.h> +#include <support/mutex.h> +#include <support/rwsem.h> +#include <support/rwlock.h> +#include <support/sema.h> +#include <support/debug.h> +#include <support/move.h> +#include <support/uuid.h> +#include <support/time.h> + +#include <xfs_behavior.h> +#include <xfs_cred.h> +#include <xfs_vfs.h> +#include <xfs_vnode.h> +#include <xfs_stats.h> +#include <xfs_sysctl.h> +#include <xfs_iops.h> +#include <xfs_super.h> +#include <xfs_fs_subr.h> +#include <xfs_buf.h> +#include <xfs_frw.h> +#include <xfs_log.h> + +/* + * Feature macros (disable/enable) + */ +#undef HAVE_REFCACHE /* Do not use refcache. */ +#undef HAVE_SENDFILE /* sendfile(2) is available in FreeBSD. */ + +#ifndef EVMS_MAJOR +#define EVMS_MAJOR 117 +#endif + +#define xfs_refcache_size xfs_params.refcache_size.val +#define xfs_refcache_purge_count xfs_params.refcache_purge.val +#define restricted_chown xfs_params.restrict_chown.val +#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_interval xfs_params.sync_interval.val +#define xfs_probe_dmapi xfs_params.probe_dmapi.val +#define xfs_probe_ioops xfs_params.probe_ioops.val +#define xfs_probe_quota xfs_params.probe_quota.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_flush_interval xfs_params.flush_interval.val +#define xfs_age_buffer xfs_params.age_buffer.val +#define xfs_io_bypass xfs_params.io_bypass.val + +#define current_cpu() smp_processor_id() +#define current_pid() (curthread->td_proc->p_pid) + +#define NBPP PAGE_SIZE +#define DPPSHFT (PAGE_SHIFT - 9) +#define NDPP (1 << (PAGE_SHIFT - 9)) +#define dtop(DD) (((DD) + NDPP - 1) >> DPPSHFT) +#define dtopt(DD) ((DD) >> DPPSHFT) +#define dpoff(DD) ((DD) & (NDPP-1)) + +#define NBBY 8 /* number of bits per byte */ +#define NBPC PAGE_SIZE /* Number of bytes per click */ +#define BPCSHIFT PAGE_SHIFT /* LOG2(NBPC) if exact */ + +/* + * Size of block device i/o is parameterized here. + * Currently the system supports page-sized i/o. + */ +#define BLKDEV_IOSHIFT BPCSHIFT +#ifndef BLKDEV_IOSIZE +#define BLKDEV_IOSIZE (1<<BLKDEV_IOSHIFT) +#else +# if NBPC != BLKDEV_IOSIZE +# error Wrong BLKDEV_IOSIZE +# endif +#endif +/* number of BB's per block device block */ +#define BLKDEV_BB BTOBB(BLKDEV_IOSIZE) + +/* bytes to clicks */ +#define btoct(x) ((__psunsigned_t)(x)>>BPCSHIFT) +#define btoc64(x) (((__uint64_t)(x)+(NBPC-1))>>BPCSHIFT) +#define btoct64(x) ((__uint64_t)(x)>>BPCSHIFT) +#define io_btoc(x) (((__psunsigned_t)(x)+(IO_NBPC-1))>>IO_BPCSHIFT) +#define io_btoct(x) ((__psunsigned_t)(x)>>IO_BPCSHIFT) + +/* off_t bytes to clicks */ +#define offtoc(x) (((__uint64_t)(x)+(NBPC-1))>>BPCSHIFT) +#define offtoct(x) ((xfs_off_t)(x)>>BPCSHIFT) + +/* clicks to off_t bytes */ +#define ctooff(x) ((xfs_off_t)(x)<<BPCSHIFT) + +/* clicks to bytes */ +#define btoct(x) ((__psunsigned_t)(x)>>BPCSHIFT) +#define ctob64(x) ((__uint64_t)(x)<<BPCSHIFT) +#define io_ctob(x) ((__psunsigned_t)(x)<<IO_BPCSHIFT) + +#ifndef CELL_CAPABLE +#define FSC_NOTIFY_NAME_CHANGED(vp) +#endif + +#ifndef ENOATTR +#define ENOATTR ENODATA /* Attribute not found */ +#endif + +/* Note: EWRONGFS never visible outside the kernel */ +#define EWRONGFS EINVAL /* Mount with wrong filesystem type */ + +/* + * XXX EFSCORRUPTED needs a real value in errno.h. asm-i386/errno.h won't + * return codes out of its known range in errno. + * XXX Also note: needs to be < 1000 and fairly unique on Linux (mustn't + * conflict with any code we use already or any code a driver may use) + * XXX Some options (currently we do #2): + * 1/ New error code ["Filesystem is corrupted", _after_ glibc updated] + * 2/ 990 ["Unknown error 990"] + * 3/ EUCLEAN ["Structure needs cleaning"] + * 4/ Convert EFSCORRUPTED to EIO [just prior to return into userspace] + */ +#define EFSCORRUPTED 990 /* Filesystem is corrupted */ + +#define SYNCHRONIZE() barrier() +#define __return_address __builtin_return_address(0) + +/* + * IRIX (BSD) quotactl makes use of separate commands for user/group, + * whereas on Linux the syscall encodes this information into the cmd + * field (see the QCMD macro in quota.h). These macros help keep the + * code portable - they are not visible from the syscall interface. + */ +#define Q_XSETGQLIM XQM_CMD(0x8) /* set groups disk limits */ +#define Q_XGETGQUOTA XQM_CMD(0x9) /* get groups disk limits */ + +/* IRIX uses a dynamic sizing algorithm (ndquot = 200 + numprocs*2) */ +/* we may well need to fine-tune this if it ever becomes an issue. */ +#define DQUOT_MAX_HEURISTIC 1024 /* NR_DQUOTS */ +#define ndquot DQUOT_MAX_HEURISTIC + +/* IRIX uses the current size of the name cache to guess a good value */ +/* - this isn't the same but is a good enough starting point for now. */ +#define DQUOT_HASH_HEURISTIC files_stat.nr_files + +/* IRIX inodes maintain the project ID also, zero this field on Linux */ +#define DEFAULT_PROJID 0 +#define dfltprid DEFAULT_PROJID + +#define FINVIS 0x0102 /* don't update timestamps - XFS */ + +#define howmany(x, y) (((x)+((y)-1))/(y)) +#define roundup(x, y) ((((x)+((y)-1))/(y))*(y)) + +/* + * Juggle IRIX device numbers - still used in ondisk structures + */ +#define XFS_DEV_BITSMAJOR 14 +#define XFS_DEV_BITSMINOR 18 +#define XFS_DEV_MAXMAJ 0x1ff +#define XFS_DEV_MAXMIN 0x3ffff +#define XFS_DEV_MAJOR(dev) ((int)(((unsigned)(dev)>>XFS_DEV_BITSMINOR) \ + & XFS_DEV_MAXMAJ)) +#define XFS_DEV_MINOR(dev) ((int)((dev)&XFS_DEV_MAXMIN)) +#define XFS_MKDEV(major,minor) ((xfs_dev_t)(((major)<<XFS_DEV_BITSMINOR) \ + | (minor&XFS_DEV_MAXMIN))) + +#define XFS_DEV_TO_KDEVT(dev) mk_kdev(XFS_DEV_MAJOR(dev),XFS_DEV_MINOR(dev)) + + +/* Produce a kernel stack trace */ + +static inline void xfs_stack_trace(void) +{ + kdb_backtrace(); +} + + +/* Move the kernel do_div definition off to one side */ + +#if defined __i386__ +/* For ia32 we need to pull some tricks to get past various versions + * of the compiler which do not like us using do_div in the middle + * of large functions. + */ +static inline __u32 xfs_do_div(void *a, __u32 b, int n) +{ + __u32 mod; + + switch (n) { + case 4: + mod = *(__u32 *)a % b; + *(__u32 *)a = *(__u32 *)a / b; + return mod; + case 8: + { + unsigned long __upper, __low, __high, __mod; + __u64 c = *(__u64 *)a; + __upper = __high = c >> 32; + __low = c; + if (__high) { + __upper = __high % (b); + __high = __high / (b); + } + asm("divl %2":"=a" (__low), "=d" (__mod):"rm" (b), "0" (__low), "1" (__upper)); + asm("":"=A" (c):"a" (__low),"d" (__high)); + *(__u64 *)a = c; + return __mod; + } + } + + /* NOTREACHED */ + return 0; +} + +/* 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: + { + unsigned long __upper, __low, __high, __mod; + __u64 c = *(__u64 *)a; + __upper = __high = c >> 32; + __low = c; + if (__high) { + __upper = __high % (b); + __high = __high / (b); + } + asm("divl %2":"=a" (__low), "=d" (__mod):"rm" (b), "0" (__low), "1" (__upper)); + asm("":"=A" (c):"a" (__low),"d" (__high)); + return __mod; + } + } + + /* NOTREACHED */ + return 0; +} +#else + +#define do_div(n, base) ({\ + int __res; \ + __res = ((__u64)(n)) % (__u32)(base); \ + (n) = ((__u64)(n)) / (__u32)(base); \ + __res; }) + +static inline __u32 xfs_do_div(void *a, __u32 b, int n) +{ + __u32 mod; + + switch (n) { + case 4: + mod = *(__u32 *)a % b; + *(__u32 *)a = *(__u32 *)a / b; + return mod; + case 8: + mod = do_div(*(__u64 *)a, b); + return mod; + } + + /* NOTREACHED */ + return 0; +} + +/* 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; +} +#endif + +#undef do_div +#define do_div(a, b) xfs_do_div(&(a), (b), sizeof(a)) +#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 unsigned long ffz(unsigned long val) +{ + val = ffsl(~val); + return val; +} + +#endif /* __XFS_FREEBSD__ */ |