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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 "kmem.h"
25#include "mrlock.h"
26
27#include <linux/semaphore.h>
28#include <linux/mm.h>
29#include <linux/sched/mm.h>
30#include <linux/kernel.h>
31#include <linux/blkdev.h>
32#include <linux/slab.h>
33#include <linux/crc32c.h>
34#include <linux/module.h>
35#include <linux/mutex.h>
36#include <linux/file.h>
37#include <linux/swap.h>
38#include <linux/errno.h>
39#include <linux/sched/signal.h>
40#include <linux/bitops.h>
41#include <linux/major.h>
42#include <linux/pagemap.h>
43#include <linux/vfs.h>
44#include <linux/seq_file.h>
45#include <linux/init.h>
46#include <linux/list.h>
47#include <linux/proc_fs.h>
48#include <linux/sort.h>
49#include <linux/cpu.h>
50#include <linux/notifier.h>
51#include <linux/delay.h>
52#include <linux/log2.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
65#include <asm/page.h>
66#include <asm/div64.h>
67#include <asm/param.h>
68#include <linux/uaccess.h>
69#include <asm/byteorder.h>
70#include <asm/unaligned.h>
71
72#include "xfs_fs.h"
73#include "xfs_stats.h"
74#include "xfs_sysctl.h"
75#include "xfs_iops.h"
76#include "xfs_aops.h"
77#include "xfs_super.h"
78#include "xfs_cksum.h"
79#include "xfs_buf.h"
80#include "xfs_message.h"
81
82#ifdef __BIG_ENDIAN
83#define XFS_NATIVE_HOST 1
84#else
85#undef XFS_NATIVE_HOST
86#endif
87
88#define irix_sgid_inherit xfs_params.sgid_inherit.val
89#define irix_symlink_mode xfs_params.symlink_mode.val
90#define xfs_panic_mask xfs_params.panic_mask.val
91#define xfs_error_level xfs_params.error_level.val
92#define xfs_syncd_centisecs xfs_params.syncd_timer.val
93#define xfs_stats_clear xfs_params.stats_clear.val
94#define xfs_inherit_sync xfs_params.inherit_sync.val
95#define xfs_inherit_nodump xfs_params.inherit_nodump.val
96#define xfs_inherit_noatime xfs_params.inherit_noatim.val
97#define xfs_inherit_nosymlinks xfs_params.inherit_nosym.val
98#define xfs_rotorstep xfs_params.rotorstep.val
99#define xfs_inherit_nodefrag xfs_params.inherit_nodfrg.val
100#define xfs_fstrm_centisecs xfs_params.fstrm_timer.val
101#define xfs_blockgc_secs xfs_params.blockgc_timer.val
102
103#define current_cpu() (raw_smp_processor_id())
104#define current_set_flags_nested(sp, f) \
105 (*(sp) = current->flags, current->flags |= (f))
106#define current_restore_flags_nested(sp, f) \
107 (current->flags = ((current->flags & ~(f)) | (*(sp) & (f))))
108
109#define NBBY 8 /* number of bits per byte */
110
111/*
112 * Size of block device i/o is parameterized here.
113 * Currently the system supports page-sized i/o.
114 */
115#define BLKDEV_IOSHIFT PAGE_SHIFT
116#define BLKDEV_IOSIZE (1<<BLKDEV_IOSHIFT)
117/* number of BB's per block device block */
118#define BLKDEV_BB BTOBB(BLKDEV_IOSIZE)
119
120#define ENOATTR ENODATA /* Attribute not found */
121#define EWRONGFS EINVAL /* Mount with wrong filesystem type */
122#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
123#define EFSBADCRC EBADMSG /* Bad CRC detected */
124
125#define __return_address __builtin_return_address(0)
126
127/*
128 * Return the address of a label. Use barrier() so that the optimizer
129 * won't reorder code to refactor the error jumpouts into a single
130 * return, which throws off the reported address.
131 */
132#define __this_address ({ __label__ __here; __here: barrier(); &&__here; })
133
134#define XFS_PROJID_DEFAULT 0
135
136#define howmany(x, y) (((x)+((y)-1))/(y))
137
138static inline void delay(long ticks)
139{
140 schedule_timeout_uninterruptible(ticks);
141}
142
143/*
144 * XFS wrapper structure for sysfs support. It depends on external data
145 * structures and is embedded in various internal data structures to implement
146 * the XFS sysfs object heirarchy. Define it here for broad access throughout
147 * the codebase.
148 */
149struct xfs_kobj {
150 struct kobject kobject;
151 struct completion complete;
152};
153
154struct xstats {
155 struct xfsstats __percpu *xs_stats;
156 struct xfs_kobj xs_kobj;
157};
158
159extern struct xstats xfsstats;
160
161static inline dev_t xfs_to_linux_dev_t(xfs_dev_t dev)
162{
163 return MKDEV(sysv_major(dev) & 0x1ff, sysv_minor(dev));
164}
165
166static inline xfs_dev_t linux_to_xfs_dev_t(dev_t dev)
167{
168 return sysv_encode_dev(dev);
169}
170
171/*
172 * Various platform dependent calls that don't fit anywhere else
173 */
174#define xfs_sort(a,n,s,fn) sort(a,n,s,fn,NULL)
175#define xfs_stack_trace() dump_stack()
176
177static inline uint64_t rounddown_64(uint64_t x, uint32_t y)
178{
179 do_div(x, y);
180 return x * y;
181}
182
183static inline uint64_t roundup_64(uint64_t x, uint32_t y)
184{
185 x += y - 1;
186 do_div(x, y);
187 return x * y;
188}
189
190static inline uint64_t howmany_64(uint64_t x, uint32_t y)
191{
192 x += y - 1;
193 do_div(x, y);
194 return x;
195}
196
197int xfs_rw_bdev(struct block_device *bdev, sector_t sector, unsigned int count,
198 char *data, unsigned int op);
199void xfs_flush_bdev_async(struct bio *bio, struct block_device *bdev,
200 struct completion *done);
201
202#define ASSERT_ALWAYS(expr) \
203 (likely(expr) ? (void)0 : assfail(NULL, #expr, __FILE__, __LINE__))
204
205#ifdef DEBUG
206#define ASSERT(expr) \
207 (likely(expr) ? (void)0 : assfail(NULL, #expr, __FILE__, __LINE__))
208
209#else /* !DEBUG */
210
211#ifdef XFS_WARN
212
213#define ASSERT(expr) \
214 (likely(expr) ? (void)0 : asswarn(NULL, #expr, __FILE__, __LINE__))
215
216#else /* !DEBUG && !XFS_WARN */
217
218#define ASSERT(expr) ((void)0)
219
220#endif /* XFS_WARN */
221#endif /* DEBUG */
222
223#define XFS_IS_CORRUPT(mp, expr) \
224 (unlikely(expr) ? xfs_corruption_error(#expr, XFS_ERRLEVEL_LOW, (mp), \
225 NULL, 0, __FILE__, __LINE__, \
226 __this_address), \
227 true : false)
228
229#define STATIC static noinline
230
231#ifdef CONFIG_XFS_RT
232
233/*
234 * make sure we ignore the inode flag if the filesystem doesn't have a
235 * configured realtime device.
236 */
237#define XFS_IS_REALTIME_INODE(ip) \
238 (((ip)->i_diflags & XFS_DIFLAG_REALTIME) && \
239 (ip)->i_mount->m_rtdev_targp)
240#define XFS_IS_REALTIME_MOUNT(mp) ((mp)->m_rtdev_targp ? 1 : 0)
241#else
242#define XFS_IS_REALTIME_INODE(ip) (0)
243#define XFS_IS_REALTIME_MOUNT(mp) (0)
244#endif
245
246/*
247 * Starting in Linux 4.15, the %p (raw pointer value) printk modifier
248 * prints a hashed version of the pointer to avoid leaking kernel
249 * pointers into dmesg. If we're trying to debug the kernel we want the
250 * raw values, so override this behavior as best we can.
251 */
252#ifdef DEBUG
253# define PTR_FMT "%px"
254#else
255# define PTR_FMT "%p"
256#endif
257
258#endif /* __XFS_LINUX__ */
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 "kmem.h"
25#include "mrlock.h"
26
27#include <linux/semaphore.h>
28#include <linux/mm.h>
29#include <linux/sched/mm.h>
30#include <linux/kernel.h>
31#include <linux/blkdev.h>
32#include <linux/slab.h>
33#include <linux/crc32c.h>
34#include <linux/module.h>
35#include <linux/mutex.h>
36#include <linux/file.h>
37#include <linux/swap.h>
38#include <linux/errno.h>
39#include <linux/sched/signal.h>
40#include <linux/bitops.h>
41#include <linux/major.h>
42#include <linux/pagemap.h>
43#include <linux/vfs.h>
44#include <linux/seq_file.h>
45#include <linux/init.h>
46#include <linux/list.h>
47#include <linux/proc_fs.h>
48#include <linux/sort.h>
49#include <linux/cpu.h>
50#include <linux/notifier.h>
51#include <linux/delay.h>
52#include <linux/log2.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
66#include <asm/page.h>
67#include <asm/div64.h>
68#include <asm/param.h>
69#include <linux/uaccess.h>
70#include <asm/byteorder.h>
71#include <asm/unaligned.h>
72
73#include "xfs_fs.h"
74#include "xfs_stats.h"
75#include "xfs_sysctl.h"
76#include "xfs_iops.h"
77#include "xfs_aops.h"
78#include "xfs_super.h"
79#include "xfs_cksum.h"
80#include "xfs_buf.h"
81#include "xfs_message.h"
82
83#ifdef __BIG_ENDIAN
84#define XFS_NATIVE_HOST 1
85#else
86#undef XFS_NATIVE_HOST
87#endif
88
89#define irix_sgid_inherit xfs_params.sgid_inherit.val
90#define irix_symlink_mode xfs_params.symlink_mode.val
91#define xfs_panic_mask xfs_params.panic_mask.val
92#define xfs_error_level xfs_params.error_level.val
93#define xfs_syncd_centisecs xfs_params.syncd_timer.val
94#define xfs_stats_clear xfs_params.stats_clear.val
95#define xfs_inherit_sync xfs_params.inherit_sync.val
96#define xfs_inherit_nodump xfs_params.inherit_nodump.val
97#define xfs_inherit_noatime xfs_params.inherit_noatim.val
98#define xfs_inherit_nosymlinks xfs_params.inherit_nosym.val
99#define xfs_rotorstep xfs_params.rotorstep.val
100#define xfs_inherit_nodefrag xfs_params.inherit_nodfrg.val
101#define xfs_fstrm_centisecs xfs_params.fstrm_timer.val
102#define xfs_blockgc_secs xfs_params.blockgc_timer.val
103
104#define current_cpu() (raw_smp_processor_id())
105#define current_set_flags_nested(sp, f) \
106 (*(sp) = current->flags, current->flags |= (f))
107#define current_restore_flags_nested(sp, f) \
108 (current->flags = ((current->flags & ~(f)) | (*(sp) & (f))))
109
110#define NBBY 8 /* number of bits per byte */
111
112/*
113 * Size of block device i/o is parameterized here.
114 * Currently the system supports page-sized i/o.
115 */
116#define BLKDEV_IOSHIFT PAGE_SHIFT
117#define BLKDEV_IOSIZE (1<<BLKDEV_IOSHIFT)
118/* number of BB's per block device block */
119#define BLKDEV_BB BTOBB(BLKDEV_IOSIZE)
120
121#define ENOATTR ENODATA /* Attribute not found */
122#define EWRONGFS EINVAL /* Mount with wrong filesystem type */
123#define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */
124#define EFSBADCRC EBADMSG /* Bad CRC detected */
125
126#define __return_address __builtin_return_address(0)
127
128/*
129 * Return the address of a label. Use barrier() so that the optimizer
130 * won't reorder code to refactor the error jumpouts into a single
131 * return, which throws off the reported address.
132 */
133#define __this_address ({ __label__ __here; __here: barrier(); &&__here; })
134
135#define XFS_PROJID_DEFAULT 0
136
137#define howmany(x, y) (((x)+((y)-1))/(y))
138
139static inline void delay(long ticks)
140{
141 schedule_timeout_uninterruptible(ticks);
142}
143
144/*
145 * XFS wrapper structure for sysfs support. It depends on external data
146 * structures and is embedded in various internal data structures to implement
147 * the XFS sysfs object heirarchy. Define it here for broad access throughout
148 * the codebase.
149 */
150struct xfs_kobj {
151 struct kobject kobject;
152 struct completion complete;
153};
154
155struct xstats {
156 struct xfsstats __percpu *xs_stats;
157 struct xfs_kobj xs_kobj;
158};
159
160extern struct xstats xfsstats;
161
162static inline dev_t xfs_to_linux_dev_t(xfs_dev_t dev)
163{
164 return MKDEV(sysv_major(dev) & 0x1ff, sysv_minor(dev));
165}
166
167static inline xfs_dev_t linux_to_xfs_dev_t(dev_t dev)
168{
169 return sysv_encode_dev(dev);
170}
171
172/*
173 * Various platform dependent calls that don't fit anywhere else
174 */
175#define xfs_sort(a,n,s,fn) sort(a,n,s,fn,NULL)
176#define xfs_stack_trace() dump_stack()
177
178static inline uint64_t rounddown_64(uint64_t x, uint32_t y)
179{
180 do_div(x, y);
181 return x * y;
182}
183
184static inline uint64_t roundup_64(uint64_t x, uint32_t y)
185{
186 x += y - 1;
187 do_div(x, y);
188 return x * y;
189}
190
191static inline uint64_t howmany_64(uint64_t x, uint32_t y)
192{
193 x += y - 1;
194 do_div(x, y);
195 return x;
196}
197
198int xfs_rw_bdev(struct block_device *bdev, sector_t sector, unsigned int count,
199 char *data, enum req_op op);
200
201#define ASSERT_ALWAYS(expr) \
202 (likely(expr) ? (void)0 : assfail(NULL, #expr, __FILE__, __LINE__))
203
204#ifdef DEBUG
205#define ASSERT(expr) \
206 (likely(expr) ? (void)0 : assfail(NULL, #expr, __FILE__, __LINE__))
207
208#else /* !DEBUG */
209
210#ifdef XFS_WARN
211
212#define ASSERT(expr) \
213 (likely(expr) ? (void)0 : asswarn(NULL, #expr, __FILE__, __LINE__))
214
215#else /* !DEBUG && !XFS_WARN */
216
217#define ASSERT(expr) ((void)0)
218
219#endif /* XFS_WARN */
220#endif /* DEBUG */
221
222#define XFS_IS_CORRUPT(mp, expr) \
223 (unlikely(expr) ? xfs_corruption_error(#expr, XFS_ERRLEVEL_LOW, (mp), \
224 NULL, 0, __FILE__, __LINE__, \
225 __this_address), \
226 true : false)
227
228#define STATIC static noinline
229
230#ifdef CONFIG_XFS_RT
231
232/*
233 * make sure we ignore the inode flag if the filesystem doesn't have a
234 * configured realtime device.
235 */
236#define XFS_IS_REALTIME_INODE(ip) \
237 (((ip)->i_diflags & XFS_DIFLAG_REALTIME) && \
238 (ip)->i_mount->m_rtdev_targp)
239#define XFS_IS_REALTIME_MOUNT(mp) ((mp)->m_rtdev_targp ? 1 : 0)
240#else
241#define XFS_IS_REALTIME_INODE(ip) (0)
242#define XFS_IS_REALTIME_MOUNT(mp) (0)
243#endif
244
245/*
246 * Starting in Linux 4.15, the %p (raw pointer value) printk modifier
247 * prints a hashed version of the pointer to avoid leaking kernel
248 * pointers into dmesg. If we're trying to debug the kernel we want the
249 * raw values, so override this behavior as best we can.
250 */
251#ifdef DEBUG
252# define PTR_FMT "%px"
253#else
254# define PTR_FMT "%p"
255#endif
256
257#endif /* __XFS_LINUX__ */