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Diffstat (limited to 'fs/xfs/xfs_linux.h')
| -rw-r--r-- | fs/xfs/xfs_linux.h | 257 |
1 files changed, 257 insertions, 0 deletions
diff --git a/fs/xfs/xfs_linux.h b/fs/xfs/xfs_linux.h new file mode 100644 index 000000000..5b7a1e201 --- /dev/null +++ b/fs/xfs/xfs_linux.h @@ -0,0 +1,257 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + */ +#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/sched/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 <linux/xattr.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_set_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 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 __return_address __builtin_return_address(0) + +/* + * Return the address of a label. Use barrier() so that the optimizer + * won't reorder code to refactor the error jumpouts into a single + * return, which throws off the reported address. + */ +#define __this_address ({ __label__ __here; __here: barrier(); &&__here; }) + +#define XFS_PROJID_DEFAULT 0 + +#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; + +static inline dev_t xfs_to_linux_dev_t(xfs_dev_t dev) +{ + return MKDEV(sysv_major(dev) & 0x1ff, sysv_minor(dev)); +} + +static inline xfs_dev_t linux_to_xfs_dev_t(dev_t dev) +{ + return sysv_encode_dev(dev); +} + +/* + * 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() + +static inline uint64_t rounddown_64(uint64_t x, uint32_t y) +{ + do_div(x, y); + return x * y; +} + +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; +} + +int xfs_rw_bdev(struct block_device *bdev, sector_t sector, unsigned int count, + char *data, unsigned int op); + +#define ASSERT_ALWAYS(expr) \ + (likely(expr) ? (void)0 : assfail(NULL, #expr, __FILE__, __LINE__)) + +#ifdef DEBUG +#define ASSERT(expr) \ + (likely(expr) ? (void)0 : assfail(NULL, #expr, __FILE__, __LINE__)) + +#else /* !DEBUG */ + +#ifdef XFS_WARN + +#define ASSERT(expr) \ + (likely(expr) ? (void)0 : asswarn(NULL, #expr, __FILE__, __LINE__)) + +#else /* !DEBUG && !XFS_WARN */ + +#define ASSERT(expr) ((void)0) + +#endif /* XFS_WARN */ +#endif /* DEBUG */ + +#define XFS_IS_CORRUPT(mp, expr) \ + (unlikely(expr) ? xfs_corruption_error(#expr, XFS_ERRLEVEL_LOW, (mp), \ + NULL, 0, __FILE__, __LINE__, \ + __this_address), \ + true : false) + +#define STATIC static noinline + +#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) +#define XFS_IS_REALTIME_MOUNT(mp) ((mp)->m_rtdev_targp ? 1 : 0) +#else +#define XFS_IS_REALTIME_INODE(ip) (0) +#define XFS_IS_REALTIME_MOUNT(mp) (0) +#endif + +/* + * Starting in Linux 4.15, the %p (raw pointer value) printk modifier + * prints a hashed version of the pointer to avoid leaking kernel + * pointers into dmesg. If we're trying to debug the kernel we want the + * raw values, so override this behavior as best we can. + */ +#ifdef DEBUG +# define PTR_FMT "%px" +#else +# define PTR_FMT "%p" +#endif + +#endif /* __XFS_LINUX__ */ |