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v6.9.4
  1// SPDX-License-Identifier: GPL-2.0
  2/*
  3 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
  4 * All Rights Reserved.
  5 */
  6#ifndef __XFS_LINUX__
  7#define __XFS_LINUX__
  8
  9#include <linux/types.h>
 10#include <linux/uuid.h>
 11
 12/*
 13 * Kernel specific type declarations for XFS
 14 */
 15
 16typedef __s64			xfs_off_t;	/* <file offset> type */
 17typedef unsigned long long	xfs_ino_t;	/* <inode> type */
 18typedef __s64			xfs_daddr_t;	/* <disk address> type */
 19typedef __u32			xfs_dev_t;
 20typedef __u32			xfs_nlink_t;
 21
 22#include "xfs_types.h"
 23
 24#include <linux/semaphore.h>
 25#include <linux/mm.h>
 26#include <linux/sched/mm.h>
 27#include <linux/kernel.h>
 28#include <linux/blkdev.h>
 29#include <linux/slab.h>
 30#include <linux/vmalloc.h>
 31#include <linux/crc32c.h>
 32#include <linux/module.h>
 33#include <linux/mutex.h>
 34#include <linux/file.h>
 35#include <linux/filelock.h>
 36#include <linux/swap.h>
 37#include <linux/errno.h>
 38#include <linux/sched/signal.h>
 39#include <linux/bitops.h>
 40#include <linux/major.h>
 41#include <linux/pagemap.h>
 42#include <linux/vfs.h>
 43#include <linux/seq_file.h>
 44#include <linux/init.h>
 45#include <linux/list.h>
 46#include <linux/proc_fs.h>
 47#include <linux/sort.h>
 48#include <linux/cpu.h>
 49#include <linux/notifier.h>
 50#include <linux/delay.h>
 51#include <linux/log2.h>
 52#include <linux/rwsem.h>
 53#include <linux/spinlock.h>
 54#include <linux/random.h>
 55#include <linux/ctype.h>
 56#include <linux/writeback.h>
 57#include <linux/capability.h>
 58#include <linux/kthread.h>
 59#include <linux/freezer.h>
 60#include <linux/list_sort.h>
 61#include <linux/ratelimit.h>
 62#include <linux/rhashtable.h>
 63#include <linux/xattr.h>
 64#include <linux/mnt_idmapping.h>
 65#include <linux/debugfs.h>
 66
 67#include <asm/page.h>
 68#include <asm/div64.h>
 69#include <asm/param.h>
 70#include <linux/uaccess.h>
 71#include <asm/byteorder.h>
 72#include <asm/unaligned.h>
 73
 74#include "xfs_fs.h"
 75#include "xfs_stats.h"
 76#include "xfs_sysctl.h"
 77#include "xfs_iops.h"
 78#include "xfs_aops.h"
 79#include "xfs_super.h"
 80#include "xfs_cksum.h"
 81#include "xfs_buf.h"
 82#include "xfs_message.h"
 83#include "xfs_drain.h"
 84#include "xfs_hooks.h"
 85
 86#ifdef __BIG_ENDIAN
 87#define XFS_NATIVE_HOST 1
 88#else
 89#undef XFS_NATIVE_HOST
 90#endif
 91
 92#define irix_sgid_inherit	xfs_params.sgid_inherit.val
 93#define irix_symlink_mode	xfs_params.symlink_mode.val
 94#define xfs_panic_mask		xfs_params.panic_mask.val
 95#define xfs_error_level		xfs_params.error_level.val
 96#define xfs_syncd_centisecs	xfs_params.syncd_timer.val
 97#define xfs_stats_clear		xfs_params.stats_clear.val
 98#define xfs_inherit_sync	xfs_params.inherit_sync.val
 99#define xfs_inherit_nodump	xfs_params.inherit_nodump.val
100#define xfs_inherit_noatime	xfs_params.inherit_noatim.val
101#define xfs_inherit_nosymlinks	xfs_params.inherit_nosym.val
102#define xfs_rotorstep		xfs_params.rotorstep.val
103#define xfs_inherit_nodefrag	xfs_params.inherit_nodfrg.val
104#define xfs_fstrm_centisecs	xfs_params.fstrm_timer.val
105#define xfs_blockgc_secs	xfs_params.blockgc_timer.val
106
107#define current_cpu()		(raw_smp_processor_id())
108#define current_set_flags_nested(sp, f)		\
109		(*(sp) = current->flags, current->flags |= (f))
110#define current_restore_flags_nested(sp, f)	\
111		(current->flags = ((current->flags & ~(f)) | (*(sp) & (f))))
112
113#define NBBY		8		/* number of bits per byte */
114
115/*
116 * Size of block device i/o is parameterized here.
117 * Currently the system supports page-sized i/o.
118 */
119#define	BLKDEV_IOSHIFT		PAGE_SHIFT
120#define	BLKDEV_IOSIZE		(1<<BLKDEV_IOSHIFT)
121/* number of BB's per block device block */
122#define	BLKDEV_BB		BTOBB(BLKDEV_IOSIZE)
123
124#define ENOATTR		ENODATA		/* Attribute not found */
125#define EWRONGFS	EINVAL		/* Mount with wrong filesystem type */
126#define EFSCORRUPTED	EUCLEAN		/* Filesystem is corrupted */
127#define EFSBADCRC	EBADMSG		/* Bad CRC detected */
128
129#define __return_address __builtin_return_address(0)
130
131/*
132 * Return the address of a label.  Use barrier() so that the optimizer
133 * won't reorder code to refactor the error jumpouts into a single
134 * return, which throws off the reported address.
135 */
136#define __this_address	({ __label__ __here; __here: barrier(); &&__here; })
137
138#define XFS_PROJID_DEFAULT	0
139
140#define howmany(x, y)	(((x)+((y)-1))/(y))
141
142static inline void delay(long ticks)
143{
144	schedule_timeout_uninterruptible(ticks);
145}
146
147/*
148 * XFS wrapper structure for sysfs support. It depends on external data
149 * structures and is embedded in various internal data structures to implement
150 * the XFS sysfs object heirarchy. Define it here for broad access throughout
151 * the codebase.
152 */
153struct xfs_kobj {
154	struct kobject		kobject;
155	struct completion	complete;
156};
157
158struct xstats {
159	struct xfsstats __percpu	*xs_stats;
160	struct xfs_kobj			xs_kobj;
161};
162
163extern struct xstats xfsstats;
164
165static inline dev_t xfs_to_linux_dev_t(xfs_dev_t dev)
166{
167	return MKDEV(sysv_major(dev) & 0x1ff, sysv_minor(dev));
168}
169
170static inline xfs_dev_t linux_to_xfs_dev_t(dev_t dev)
171{
172	return sysv_encode_dev(dev);
173}
174
175/*
176 * Various platform dependent calls that don't fit anywhere else
177 */
178#define xfs_sort(a,n,s,fn)	sort(a,n,s,fn,NULL)
179#define xfs_stack_trace()	dump_stack()
180
181static inline uint64_t rounddown_64(uint64_t x, uint32_t y)
182{
183	do_div(x, y);
184	return x * y;
185}
186
187static inline uint64_t roundup_64(uint64_t x, uint32_t y)
188{
189	x += y - 1;
190	do_div(x, y);
191	return x * y;
192}
193
194static inline uint64_t howmany_64(uint64_t x, uint32_t y)
195{
196	x += y - 1;
197	do_div(x, y);
198	return x;
 
 
 
 
 
199}
200
201/* If @b is a power of 2, return log2(b).  Else return -1. */
202static inline int8_t log2_if_power2(unsigned long b)
203{
204	return is_power_of_2(b) ? ilog2(b) : -1;
205}
206
207/* If @b is a power of 2, return a mask of the lower bits, else return zero. */
208static inline unsigned long long mask64_if_power2(unsigned long b)
209{
210	return is_power_of_2(b) ? b - 1 : 0;
211}
212
213int xfs_rw_bdev(struct block_device *bdev, sector_t sector, unsigned int count,
214		char *data, enum req_op op);
215
216#define ASSERT_ALWAYS(expr)	\
217	(likely(expr) ? (void)0 : assfail(NULL, #expr, __FILE__, __LINE__))
218
219#ifdef DEBUG
220#define ASSERT(expr)	\
221	(likely(expr) ? (void)0 : assfail(NULL, #expr, __FILE__, __LINE__))
222
223#else	/* !DEBUG */
224
225#ifdef XFS_WARN
226
227#define ASSERT(expr)	\
228	(likely(expr) ? (void)0 : asswarn(NULL, #expr, __FILE__, __LINE__))
229
230#else	/* !DEBUG && !XFS_WARN */
231
232#define ASSERT(expr)		((void)0)
233
234#endif /* XFS_WARN */
235#endif /* DEBUG */
236
237#define XFS_IS_CORRUPT(mp, expr)	\
238	(unlikely(expr) ? xfs_corruption_error(#expr, XFS_ERRLEVEL_LOW, (mp), \
239					       NULL, 0, __FILE__, __LINE__, \
240					       __this_address), \
241			  true : false)
242
243#define STATIC static noinline
244
245#ifdef CONFIG_XFS_RT
246
247/*
248 * make sure we ignore the inode flag if the filesystem doesn't have a
249 * configured realtime device.
250 */
251#define XFS_IS_REALTIME_INODE(ip)			\
252	(((ip)->i_diflags & XFS_DIFLAG_REALTIME) &&	\
253	 (ip)->i_mount->m_rtdev_targp)
254#define XFS_IS_REALTIME_MOUNT(mp) ((mp)->m_rtdev_targp ? 1 : 0)
255#else
256#define XFS_IS_REALTIME_INODE(ip) (0)
257#define XFS_IS_REALTIME_MOUNT(mp) (0)
258#endif
259
260/*
261 * Starting in Linux 4.15, the %p (raw pointer value) printk modifier
262 * prints a hashed version of the pointer to avoid leaking kernel
263 * pointers into dmesg.  If we're trying to debug the kernel we want the
264 * raw values, so override this behavior as best we can.
265 */
266#ifdef DEBUG
267# define PTR_FMT "%px"
268#else
269# define PTR_FMT "%p"
270#endif
271
272/*
273 * Helper for IO routines to grab backing pages from allocated kernel memory.
274 */
275static inline struct page *
276kmem_to_page(void *addr)
277{
278	if (is_vmalloc_addr(addr))
279		return vmalloc_to_page(addr);
280	return virt_to_page(addr);
281}
282
283#endif /* __XFS_LINUX__ */
v6.13.7
  1// SPDX-License-Identifier: GPL-2.0
  2/*
  3 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
  4 * All Rights Reserved.
  5 */
  6#ifndef __XFS_LINUX__
  7#define __XFS_LINUX__
  8
  9#include <linux/types.h>
 10#include <linux/uuid.h>
 11
 12/*
 13 * Kernel specific type declarations for XFS
 14 */
 15
 16typedef __s64			xfs_off_t;	/* <file offset> type */
 17typedef unsigned long long	xfs_ino_t;	/* <inode> type */
 18typedef __s64			xfs_daddr_t;	/* <disk address> type */
 19typedef __u32			xfs_dev_t;
 20typedef __u32			xfs_nlink_t;
 21
 22#include "xfs_types.h"
 23
 24#include <linux/semaphore.h>
 25#include <linux/mm.h>
 26#include <linux/sched/mm.h>
 27#include <linux/kernel.h>
 28#include <linux/blkdev.h>
 29#include <linux/slab.h>
 30#include <linux/vmalloc.h>
 31#include <linux/crc32c.h>
 32#include <linux/module.h>
 33#include <linux/mutex.h>
 34#include <linux/file.h>
 35#include <linux/filelock.h>
 36#include <linux/swap.h>
 37#include <linux/errno.h>
 38#include <linux/sched/signal.h>
 39#include <linux/bitops.h>
 40#include <linux/major.h>
 41#include <linux/pagemap.h>
 42#include <linux/vfs.h>
 43#include <linux/seq_file.h>
 44#include <linux/init.h>
 45#include <linux/list.h>
 46#include <linux/proc_fs.h>
 47#include <linux/sort.h>
 48#include <linux/cpu.h>
 49#include <linux/notifier.h>
 50#include <linux/delay.h>
 51#include <linux/log2.h>
 52#include <linux/rwsem.h>
 53#include <linux/spinlock.h>
 54#include <linux/random.h>
 55#include <linux/ctype.h>
 56#include <linux/writeback.h>
 57#include <linux/capability.h>
 58#include <linux/kthread.h>
 59#include <linux/freezer.h>
 60#include <linux/list_sort.h>
 61#include <linux/ratelimit.h>
 62#include <linux/rhashtable.h>
 63#include <linux/xattr.h>
 64#include <linux/mnt_idmapping.h>
 65#include <linux/debugfs.h>
 66
 67#include <asm/page.h>
 68#include <asm/div64.h>
 69#include <asm/param.h>
 70#include <linux/uaccess.h>
 71#include <asm/byteorder.h>
 72#include <linux/unaligned.h>
 73
 74#include "xfs_fs.h"
 75#include "xfs_stats.h"
 76#include "xfs_sysctl.h"
 77#include "xfs_iops.h"
 78#include "xfs_aops.h"
 79#include "xfs_super.h"
 80#include "xfs_cksum.h"
 81#include "xfs_buf.h"
 82#include "xfs_message.h"
 83#include "xfs_drain.h"
 84#include "xfs_hooks.h"
 85
 86#ifdef __BIG_ENDIAN
 87#define XFS_NATIVE_HOST 1
 88#else
 89#undef XFS_NATIVE_HOST
 90#endif
 91
 92#define irix_sgid_inherit	xfs_params.sgid_inherit.val
 93#define irix_symlink_mode	xfs_params.symlink_mode.val
 94#define xfs_panic_mask		xfs_params.panic_mask.val
 95#define xfs_error_level		xfs_params.error_level.val
 96#define xfs_syncd_centisecs	xfs_params.syncd_timer.val
 97#define xfs_stats_clear		xfs_params.stats_clear.val
 98#define xfs_inherit_sync	xfs_params.inherit_sync.val
 99#define xfs_inherit_nodump	xfs_params.inherit_nodump.val
100#define xfs_inherit_noatime	xfs_params.inherit_noatim.val
101#define xfs_inherit_nosymlinks	xfs_params.inherit_nosym.val
102#define xfs_rotorstep		xfs_params.rotorstep.val
103#define xfs_inherit_nodefrag	xfs_params.inherit_nodfrg.val
104#define xfs_fstrm_centisecs	xfs_params.fstrm_timer.val
105#define xfs_blockgc_secs	xfs_params.blockgc_timer.val
106
107#define current_cpu()		(raw_smp_processor_id())
108#define current_set_flags_nested(sp, f)		\
109		(*(sp) = current->flags, current->flags |= (f))
110#define current_restore_flags_nested(sp, f)	\
111		(current->flags = ((current->flags & ~(f)) | (*(sp) & (f))))
112
113#define NBBY		8		/* number of bits per byte */
114
115/*
116 * Size of block device i/o is parameterized here.
117 * Currently the system supports page-sized i/o.
118 */
119#define	BLKDEV_IOSHIFT		PAGE_SHIFT
120#define	BLKDEV_IOSIZE		(1<<BLKDEV_IOSHIFT)
121/* number of BB's per block device block */
122#define	BLKDEV_BB		BTOBB(BLKDEV_IOSIZE)
123
124#define ENOATTR		ENODATA		/* Attribute not found */
125#define EWRONGFS	EINVAL		/* Mount with wrong filesystem type */
126#define EFSCORRUPTED	EUCLEAN		/* Filesystem is corrupted */
127#define EFSBADCRC	EBADMSG		/* Bad CRC detected */
128
129#define __return_address __builtin_return_address(0)
130
131/*
132 * Return the address of a label.  Use barrier() so that the optimizer
133 * won't reorder code to refactor the error jumpouts into a single
134 * return, which throws off the reported address.
135 */
136#define __this_address	({ __label__ __here; __here: barrier(); &&__here; })
137
 
 
138#define howmany(x, y)	(((x)+((y)-1))/(y))
139
140static inline void delay(long ticks)
141{
142	schedule_timeout_uninterruptible(ticks);
143}
144
145/*
146 * XFS wrapper structure for sysfs support. It depends on external data
147 * structures and is embedded in various internal data structures to implement
148 * the XFS sysfs object heirarchy. Define it here for broad access throughout
149 * the codebase.
150 */
151struct xfs_kobj {
152	struct kobject		kobject;
153	struct completion	complete;
154};
155
156struct xstats {
157	struct xfsstats __percpu	*xs_stats;
158	struct xfs_kobj			xs_kobj;
159};
160
161extern struct xstats xfsstats;
162
163static inline dev_t xfs_to_linux_dev_t(xfs_dev_t dev)
164{
165	return MKDEV(sysv_major(dev) & 0x1ff, sysv_minor(dev));
166}
167
168static inline xfs_dev_t linux_to_xfs_dev_t(dev_t dev)
169{
170	return sysv_encode_dev(dev);
171}
172
173/*
174 * Various platform dependent calls that don't fit anywhere else
175 */
176#define xfs_sort(a,n,s,fn)	sort(a,n,s,fn,NULL)
177#define xfs_stack_trace()	dump_stack()
178
179static inline uint64_t rounddown_64(uint64_t x, uint32_t y)
180{
181	do_div(x, y);
182	return x * y;
183}
184
185static inline uint64_t roundup_64(uint64_t x, uint32_t y)
186{
187	x += y - 1;
188	do_div(x, y);
189	return x * y;
190}
191
192static inline uint64_t howmany_64(uint64_t x, uint32_t y)
193{
194	x += y - 1;
195	do_div(x, y);
196	return x;
197}
198
199static inline bool isaligned_64(uint64_t x, uint32_t y)
200{
201	return do_div(x, y) == 0;
202}
203
204/* If @b is a power of 2, return log2(b).  Else return -1. */
205static inline int8_t log2_if_power2(unsigned long b)
206{
207	return is_power_of_2(b) ? ilog2(b) : -1;
208}
209
210/* If @b is a power of 2, return a mask of the lower bits, else return zero. */
211static inline unsigned long long mask64_if_power2(unsigned long b)
212{
213	return is_power_of_2(b) ? b - 1 : 0;
214}
215
216int xfs_rw_bdev(struct block_device *bdev, sector_t sector, unsigned int count,
217		char *data, enum req_op op);
218
219#define ASSERT_ALWAYS(expr)	\
220	(likely(expr) ? (void)0 : assfail(NULL, #expr, __FILE__, __LINE__))
221
222#ifdef DEBUG
223#define ASSERT(expr)	\
224	(likely(expr) ? (void)0 : assfail(NULL, #expr, __FILE__, __LINE__))
225
226#else	/* !DEBUG */
227
228#ifdef XFS_WARN
229
230#define ASSERT(expr)	\
231	(likely(expr) ? (void)0 : asswarn(NULL, #expr, __FILE__, __LINE__))
232
233#else	/* !DEBUG && !XFS_WARN */
234
235#define ASSERT(expr)		((void)0)
236
237#endif /* XFS_WARN */
238#endif /* DEBUG */
239
240#define XFS_IS_CORRUPT(mp, expr)	\
241	(unlikely(expr) ? xfs_corruption_error(#expr, XFS_ERRLEVEL_LOW, (mp), \
242					       NULL, 0, __FILE__, __LINE__, \
243					       __this_address), \
244			  true : false)
245
246#define STATIC static noinline
247
248#ifdef CONFIG_XFS_RT
249
250/*
251 * make sure we ignore the inode flag if the filesystem doesn't have a
252 * configured realtime device.
253 */
254#define XFS_IS_REALTIME_INODE(ip)			\
255	(((ip)->i_diflags & XFS_DIFLAG_REALTIME) &&	\
256	 (ip)->i_mount->m_rtdev_targp)
257#define XFS_IS_REALTIME_MOUNT(mp) ((mp)->m_rtdev_targp ? 1 : 0)
258#else
259#define XFS_IS_REALTIME_INODE(ip) (0)
260#define XFS_IS_REALTIME_MOUNT(mp) (0)
261#endif
262
263/*
264 * Starting in Linux 4.15, the %p (raw pointer value) printk modifier
265 * prints a hashed version of the pointer to avoid leaking kernel
266 * pointers into dmesg.  If we're trying to debug the kernel we want the
267 * raw values, so override this behavior as best we can.
268 */
269#ifdef DEBUG
270# define PTR_FMT "%px"
271#else
272# define PTR_FMT "%p"
273#endif
274
275/*
276 * Helper for IO routines to grab backing pages from allocated kernel memory.
277 */
278static inline struct page *
279kmem_to_page(void *addr)
280{
281	if (is_vmalloc_addr(addr))
282		return vmalloc_to_page(addr);
283	return virt_to_page(addr);
284}
285
286#endif /* __XFS_LINUX__ */