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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_eofb_secs xfs_params.eofb_timer.val
102#define xfs_cowb_secs xfs_params.cowb_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 SYNCHRONIZE() barrier()
127#define __return_address __builtin_return_address(0)
128
129/*
130 * Return the address of a label. Use barrier() so that the optimizer
131 * won't reorder code to refactor the error jumpouts into a single
132 * return, which throws off the reported address.
133 */
134#define __this_address ({ __label__ __here; __here: barrier(); &&__here; })
135
136#define XFS_PROJID_DEFAULT 0
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 roundup_64(uint64_t x, uint32_t y)
180{
181 x += y - 1;
182 do_div(x, y);
183 return x * y;
184}
185
186static inline uint64_t howmany_64(uint64_t x, uint32_t y)
187{
188 x += y - 1;
189 do_div(x, y);
190 return x;
191}
192
193int xfs_rw_bdev(struct block_device *bdev, sector_t sector, unsigned int count,
194 char *data, unsigned int op);
195
196#define ASSERT_ALWAYS(expr) \
197 (likely(expr) ? (void)0 : assfail(NULL, #expr, __FILE__, __LINE__))
198
199#ifdef DEBUG
200#define ASSERT(expr) \
201 (likely(expr) ? (void)0 : assfail(NULL, #expr, __FILE__, __LINE__))
202
203#else /* !DEBUG */
204
205#ifdef XFS_WARN
206
207#define ASSERT(expr) \
208 (likely(expr) ? (void)0 : asswarn(NULL, #expr, __FILE__, __LINE__))
209
210#else /* !DEBUG && !XFS_WARN */
211
212#define ASSERT(expr) ((void)0)
213
214#endif /* XFS_WARN */
215#endif /* DEBUG */
216
217#define XFS_IS_CORRUPT(mp, expr) \
218 (unlikely(expr) ? xfs_corruption_error(#expr, XFS_ERRLEVEL_LOW, (mp), \
219 NULL, 0, __FILE__, __LINE__, \
220 __this_address), \
221 true : false)
222
223#define STATIC static noinline
224
225#ifdef CONFIG_XFS_RT
226
227/*
228 * make sure we ignore the inode flag if the filesystem doesn't have a
229 * configured realtime device.
230 */
231#define XFS_IS_REALTIME_INODE(ip) \
232 (((ip)->i_d.di_flags & XFS_DIFLAG_REALTIME) && \
233 (ip)->i_mount->m_rtdev_targp)
234#define XFS_IS_REALTIME_MOUNT(mp) ((mp)->m_rtdev_targp ? 1 : 0)
235#else
236#define XFS_IS_REALTIME_INODE(ip) (0)
237#define XFS_IS_REALTIME_MOUNT(mp) (0)
238#endif
239
240/*
241 * Starting in Linux 4.15, the %p (raw pointer value) printk modifier
242 * prints a hashed version of the pointer to avoid leaking kernel
243 * pointers into dmesg. If we're trying to debug the kernel we want the
244 * raw values, so override this behavior as best we can.
245 */
246#ifdef DEBUG
247# define PTR_FMT "%px"
248#else
249# define PTR_FMT "%p"
250#endif
251
252#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
64#include <asm/page.h>
65#include <asm/div64.h>
66#include <asm/param.h>
67#include <linux/uaccess.h>
68#include <asm/byteorder.h>
69#include <asm/unaligned.h>
70
71#include "xfs_fs.h"
72#include "xfs_stats.h"
73#include "xfs_sysctl.h"
74#include "xfs_iops.h"
75#include "xfs_aops.h"
76#include "xfs_super.h"
77#include "xfs_cksum.h"
78#include "xfs_buf.h"
79#include "xfs_message.h"
80
81#ifdef __BIG_ENDIAN
82#define XFS_NATIVE_HOST 1
83#else
84#undef XFS_NATIVE_HOST
85#endif
86
87#define irix_sgid_inherit xfs_params.sgid_inherit.val
88#define irix_symlink_mode xfs_params.symlink_mode.val
89#define xfs_panic_mask xfs_params.panic_mask.val
90#define xfs_error_level xfs_params.error_level.val
91#define xfs_syncd_centisecs xfs_params.syncd_timer.val
92#define xfs_stats_clear xfs_params.stats_clear.val
93#define xfs_inherit_sync xfs_params.inherit_sync.val
94#define xfs_inherit_nodump xfs_params.inherit_nodump.val
95#define xfs_inherit_noatime xfs_params.inherit_noatim.val
96#define xfs_inherit_nosymlinks xfs_params.inherit_nosym.val
97#define xfs_rotorstep xfs_params.rotorstep.val
98#define xfs_inherit_nodefrag xfs_params.inherit_nodfrg.val
99#define xfs_fstrm_centisecs xfs_params.fstrm_timer.val
100#define xfs_eofb_secs xfs_params.eofb_timer.val
101#define xfs_cowb_secs xfs_params.cowb_timer.val
102
103#define current_cpu() (raw_smp_processor_id())
104#define current_pid() (current->pid)
105#define current_test_flags(f) (current->flags & (f))
106#define current_set_flags_nested(sp, f) \
107 (*(sp) = current->flags, current->flags |= (f))
108#define current_clear_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 SYNCHRONIZE() barrier()
130#define __return_address __builtin_return_address(0)
131
132/*
133 * Return the address of a label. Use barrier() so that the optimizer
134 * won't reorder code to refactor the error jumpouts into a single
135 * return, which throws off the reported address.
136 */
137#define __this_address ({ __label__ __here; __here: barrier(); &&__here; })
138
139#define XFS_PROJID_DEFAULT 0
140
141#define howmany(x, y) (((x)+((y)-1))/(y))
142
143static inline void delay(long ticks)
144{
145 schedule_timeout_uninterruptible(ticks);
146}
147
148/*
149 * XFS wrapper structure for sysfs support. It depends on external data
150 * structures and is embedded in various internal data structures to implement
151 * the XFS sysfs object heirarchy. Define it here for broad access throughout
152 * the codebase.
153 */
154struct xfs_kobj {
155 struct kobject kobject;
156 struct completion complete;
157};
158
159struct xstats {
160 struct xfsstats __percpu *xs_stats;
161 struct xfs_kobj xs_kobj;
162};
163
164extern struct xstats xfsstats;
165
166/* Kernel uid/gid conversion. These are used to convert to/from the on disk
167 * uid_t/gid_t types to the kuid_t/kgid_t types that the kernel uses internally.
168 * The conversion here is type only, the value will remain the same since we
169 * are converting to the init_user_ns. The uid is later mapped to a particular
170 * user namespace value when crossing the kernel/user boundary.
171 */
172static inline uint32_t xfs_kuid_to_uid(kuid_t uid)
173{
174 return from_kuid(&init_user_ns, uid);
175}
176
177static inline kuid_t xfs_uid_to_kuid(uint32_t uid)
178{
179 return make_kuid(&init_user_ns, uid);
180}
181
182static inline uint32_t xfs_kgid_to_gid(kgid_t gid)
183{
184 return from_kgid(&init_user_ns, gid);
185}
186
187static inline kgid_t xfs_gid_to_kgid(uint32_t gid)
188{
189 return make_kgid(&init_user_ns, gid);
190}
191
192static inline dev_t xfs_to_linux_dev_t(xfs_dev_t dev)
193{
194 return MKDEV(sysv_major(dev) & 0x1ff, sysv_minor(dev));
195}
196
197static inline xfs_dev_t linux_to_xfs_dev_t(dev_t dev)
198{
199 return sysv_encode_dev(dev);
200}
201
202/*
203 * Various platform dependent calls that don't fit anywhere else
204 */
205#define xfs_sort(a,n,s,fn) sort(a,n,s,fn,NULL)
206#define xfs_stack_trace() dump_stack()
207
208static inline uint64_t roundup_64(uint64_t x, uint32_t y)
209{
210 x += y - 1;
211 do_div(x, y);
212 return x * y;
213}
214
215static inline uint64_t howmany_64(uint64_t x, uint32_t y)
216{
217 x += y - 1;
218 do_div(x, y);
219 return x;
220}
221
222int xfs_rw_bdev(struct block_device *bdev, sector_t sector, unsigned int count,
223 char *data, unsigned int op);
224
225#define ASSERT_ALWAYS(expr) \
226 (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__))
227
228#ifdef DEBUG
229#define ASSERT(expr) \
230 (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__))
231
232#else /* !DEBUG */
233
234#ifdef XFS_WARN
235
236#define ASSERT(expr) \
237 (likely(expr) ? (void)0 : asswarn(#expr, __FILE__, __LINE__))
238
239#else /* !DEBUG && !XFS_WARN */
240
241#define ASSERT(expr) ((void)0)
242
243#endif /* XFS_WARN */
244#endif /* DEBUG */
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_d.di_flags & 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#endif /* __XFS_LINUX__ */