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0b61f8a4 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | /* |
7b718769 NS |
3 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
4 | * All Rights Reserved. | |
1da177e4 LT |
5 | */ |
6 | #ifndef __XFS_LINUX__ | |
7 | #define __XFS_LINUX__ | |
8 | ||
9 | #include <linux/types.h> | |
b1f359f9 | 10 | #include <linux/uuid.h> |
1da177e4 | 11 | |
4f3d71f6 DC |
12 | /* |
13 | * Kernel specific type declarations for XFS | |
14 | */ | |
4f3d71f6 | 15 | |
4f3d71f6 DC |
16 | typedef __s64 xfs_off_t; /* <file offset> type */ |
17 | typedef unsigned long long xfs_ino_t; /* <inode> type */ | |
18 | typedef __s64 xfs_daddr_t; /* <disk address> type */ | |
4f3d71f6 DC |
19 | typedef __u32 xfs_dev_t; |
20 | typedef __u32 xfs_nlink_t; | |
21 | ||
06f8e2d6 | 22 | #include "xfs_types.h" |
1da177e4 | 23 | |
06f8e2d6 AE |
24 | #include "kmem.h" |
25 | #include "mrlock.h" | |
1da177e4 | 26 | |
ab4a9b04 | 27 | #include <linux/semaphore.h> |
1da177e4 LT |
28 | #include <linux/mm.h> |
29 | #include <linux/kernel.h> | |
30 | #include <linux/blkdev.h> | |
31 | #include <linux/slab.h> | |
bc02e869 | 32 | #include <linux/crc32c.h> |
1da177e4 | 33 | #include <linux/module.h> |
a0b0b8a5 | 34 | #include <linux/mutex.h> |
1da177e4 LT |
35 | #include <linux/file.h> |
36 | #include <linux/swap.h> | |
37 | #include <linux/errno.h> | |
174cd4b1 | 38 | #include <linux/sched/signal.h> |
1da177e4 LT |
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> | |
1da177e4 | 47 | #include <linux/sort.h> |
e8234a68 DC |
48 | #include <linux/cpu.h> |
49 | #include <linux/notifier.h> | |
01e1b69c | 50 | #include <linux/delay.h> |
af3a2e8a | 51 | #include <linux/log2.h> |
007c61c6 | 52 | #include <linux/spinlock.h> |
64275ea4 | 53 | #include <linux/random.h> |
189f4bf2 | 54 | #include <linux/ctype.h> |
6bfb3d06 | 55 | #include <linux/writeback.h> |
6c77b0ea | 56 | #include <linux/capability.h> |
0030807c CH |
57 | #include <linux/kthread.h> |
58 | #include <linux/freezer.h> | |
8a072a4d | 59 | #include <linux/list_sort.h> |
3d6e0361 | 60 | #include <linux/ratelimit.h> |
6031e73a | 61 | #include <linux/rhashtable.h> |
1da177e4 LT |
62 | |
63 | #include <asm/page.h> | |
64 | #include <asm/div64.h> | |
65 | #include <asm/param.h> | |
7c0f6ba6 | 66 | #include <linux/uaccess.h> |
1da177e4 LT |
67 | #include <asm/byteorder.h> |
68 | #include <asm/unaligned.h> | |
69 | ||
b92cc59f | 70 | #include "xfs_fs.h" |
06f8e2d6 AE |
71 | #include "xfs_stats.h" |
72 | #include "xfs_sysctl.h" | |
73 | #include "xfs_iops.h" | |
74 | #include "xfs_aops.h" | |
75 | #include "xfs_super.h" | |
51582170 | 76 | #include "xfs_cksum.h" |
06f8e2d6 AE |
77 | #include "xfs_buf.h" |
78 | #include "xfs_message.h" | |
1da177e4 | 79 | |
218106a1 CH |
80 | #ifdef __BIG_ENDIAN |
81 | #define XFS_NATIVE_HOST 1 | |
82 | #else | |
83 | #undef XFS_NATIVE_HOST | |
84 | #endif | |
85 | ||
1da177e4 LT |
86 | #define irix_sgid_inherit xfs_params.sgid_inherit.val |
87 | #define irix_symlink_mode xfs_params.symlink_mode.val | |
88 | #define xfs_panic_mask xfs_params.panic_mask.val | |
89 | #define xfs_error_level xfs_params.error_level.val | |
90 | #define xfs_syncd_centisecs xfs_params.syncd_timer.val | |
91 | #define xfs_stats_clear xfs_params.stats_clear.val | |
92 | #define xfs_inherit_sync xfs_params.inherit_sync.val | |
93 | #define xfs_inherit_nodump xfs_params.inherit_nodump.val | |
94 | #define xfs_inherit_noatime xfs_params.inherit_noatim.val | |
1da177e4 LT |
95 | #define xfs_inherit_nosymlinks xfs_params.inherit_nosym.val |
96 | #define xfs_rotorstep xfs_params.rotorstep.val | |
d3446eac | 97 | #define xfs_inherit_nodefrag xfs_params.inherit_nodfrg.val |
2a82b8be | 98 | #define xfs_fstrm_centisecs xfs_params.fstrm_timer.val |
579b62fa | 99 | #define xfs_eofb_secs xfs_params.eofb_timer.val |
83104d44 | 100 | #define xfs_cowb_secs xfs_params.cowb_timer.val |
1da177e4 | 101 | |
59c1b082 | 102 | #define current_cpu() (raw_smp_processor_id()) |
1da177e4 | 103 | #define current_pid() (current->pid) |
59c1b082 | 104 | #define current_test_flags(f) (current->flags & (f)) |
59c1b082 NS |
105 | #define current_set_flags_nested(sp, f) \ |
106 | (*(sp) = current->flags, current->flags |= (f)) | |
107 | #define current_clear_flags_nested(sp, f) \ | |
108 | (*(sp) = current->flags, current->flags &= ~(f)) | |
109 | #define current_restore_flags_nested(sp, f) \ | |
110 | (current->flags = ((current->flags & ~(f)) | (*(sp) & (f)))) | |
1da177e4 | 111 | |
007c61c6 ES |
112 | #define spinlock_destroy(lock) |
113 | ||
1da177e4 | 114 | #define NBBY 8 /* number of bits per byte */ |
1da177e4 LT |
115 | |
116 | /* | |
117 | * Size of block device i/o is parameterized here. | |
118 | * Currently the system supports page-sized i/o. | |
119 | */ | |
09cbfeaf | 120 | #define BLKDEV_IOSHIFT PAGE_SHIFT |
1da177e4 LT |
121 | #define BLKDEV_IOSIZE (1<<BLKDEV_IOSHIFT) |
122 | /* number of BB's per block device block */ | |
123 | #define BLKDEV_BB BTOBB(BLKDEV_IOSIZE) | |
124 | ||
1da177e4 | 125 | #define ENOATTR ENODATA /* Attribute not found */ |
da2f4d67 NS |
126 | #define EWRONGFS EINVAL /* Mount with wrong filesystem type */ |
127 | #define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */ | |
ca23f8fd | 128 | #define EFSBADCRC EBADMSG /* Bad CRC detected */ |
1da177e4 LT |
129 | |
130 | #define SYNCHRONIZE() barrier() | |
131 | #define __return_address __builtin_return_address(0) | |
132 | ||
52c732ee DW |
133 | /* |
134 | * Return the address of a label. Use barrier() so that the optimizer | |
135 | * won't reorder code to refactor the error jumpouts into a single | |
136 | * return, which throws off the reported address. | |
137 | */ | |
138 | #define __this_address ({ __label__ __here; __here: barrier(); &&__here; }) | |
139 | ||
6743099c | 140 | #define XFS_PROJID_DEFAULT 0 |
1da177e4 LT |
141 | |
142 | #define MIN(a,b) (min(a,b)) | |
143 | #define MAX(a,b) (max(a,b)) | |
144 | #define howmany(x, y) (((x)+((y)-1))/(y)) | |
1da177e4 | 145 | |
e076b0f3 DC |
146 | static inline void delay(long ticks) |
147 | { | |
148 | schedule_timeout_uninterruptible(ticks); | |
149 | } | |
150 | ||
a31b1d3d BF |
151 | /* |
152 | * XFS wrapper structure for sysfs support. It depends on external data | |
153 | * structures and is embedded in various internal data structures to implement | |
154 | * the XFS sysfs object heirarchy. Define it here for broad access throughout | |
155 | * the codebase. | |
156 | */ | |
157 | struct xfs_kobj { | |
158 | struct kobject kobject; | |
159 | struct completion complete; | |
160 | }; | |
161 | ||
80529c45 BD |
162 | struct xstats { |
163 | struct xfsstats __percpu *xs_stats; | |
164 | struct xfs_kobj xs_kobj; | |
165 | }; | |
166 | ||
167 | extern struct xstats xfsstats; | |
168 | ||
c5eeb7ec DE |
169 | /* Kernel uid/gid conversion. These are used to convert to/from the on disk |
170 | * uid_t/gid_t types to the kuid_t/kgid_t types that the kernel uses internally. | |
171 | * The conversion here is type only, the value will remain the same since we | |
172 | * are converting to the init_user_ns. The uid is later mapped to a particular | |
173 | * user namespace value when crossing the kernel/user boundary. | |
174 | */ | |
c8ce540d | 175 | static inline uint32_t xfs_kuid_to_uid(kuid_t uid) |
c5eeb7ec DE |
176 | { |
177 | return from_kuid(&init_user_ns, uid); | |
178 | } | |
179 | ||
c8ce540d | 180 | static inline kuid_t xfs_uid_to_kuid(uint32_t uid) |
c5eeb7ec DE |
181 | { |
182 | return make_kuid(&init_user_ns, uid); | |
183 | } | |
184 | ||
c8ce540d | 185 | static inline uint32_t xfs_kgid_to_gid(kgid_t gid) |
c5eeb7ec DE |
186 | { |
187 | return from_kgid(&init_user_ns, gid); | |
188 | } | |
189 | ||
c8ce540d | 190 | static inline kgid_t xfs_gid_to_kgid(uint32_t gid) |
c5eeb7ec DE |
191 | { |
192 | return make_kgid(&init_user_ns, gid); | |
193 | } | |
194 | ||
274e0a1f CH |
195 | static inline dev_t xfs_to_linux_dev_t(xfs_dev_t dev) |
196 | { | |
197 | return MKDEV(sysv_major(dev) & 0x1ff, sysv_minor(dev)); | |
198 | } | |
199 | ||
200 | static inline xfs_dev_t linux_to_xfs_dev_t(dev_t dev) | |
201 | { | |
202 | return sysv_encode_dev(dev); | |
203 | } | |
204 | ||
cde410a9 NS |
205 | /* |
206 | * Various platform dependent calls that don't fit anywhere else | |
207 | */ | |
380b5dc0 | 208 | #define xfs_sort(a,n,s,fn) sort(a,n,s,fn,NULL) |
1da177e4 | 209 | #define xfs_stack_trace() dump_stack() |
1da177e4 | 210 | |
1da177e4 LT |
211 | /* Side effect free 64 bit mod operation */ |
212 | static inline __u32 xfs_do_mod(void *a, __u32 b, int n) | |
213 | { | |
214 | switch (n) { | |
215 | case 4: | |
216 | return *(__u32 *)a % b; | |
217 | case 8: | |
218 | { | |
219 | __u64 c = *(__u64 *)a; | |
220 | return do_div(c, b); | |
221 | } | |
222 | } | |
223 | ||
224 | /* NOTREACHED */ | |
225 | return 0; | |
226 | } | |
1da177e4 | 227 | |
1da177e4 LT |
228 | #define do_mod(a, b) xfs_do_mod(&(a), (b), sizeof(a)) |
229 | ||
c8ce540d | 230 | static inline uint64_t roundup_64(uint64_t x, uint32_t y) |
1da177e4 LT |
231 | { |
232 | x += y - 1; | |
233 | do_div(x, y); | |
d99831ff | 234 | return x * y; |
1da177e4 LT |
235 | } |
236 | ||
c8ce540d | 237 | static inline uint64_t howmany_64(uint64_t x, uint32_t y) |
68c32715 NS |
238 | { |
239 | x += y - 1; | |
240 | do_div(x, y); | |
241 | return x; | |
242 | } | |
243 | ||
9130090b | 244 | #define ASSERT_ALWAYS(expr) \ |
bf46ecc3 | 245 | (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) |
9130090b | 246 | |
742ae1e3 DC |
247 | #ifdef DEBUG |
248 | #define ASSERT(expr) \ | |
bf46ecc3 | 249 | (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) |
9130090b | 250 | |
742ae1e3 DC |
251 | #else /* !DEBUG */ |
252 | ||
253 | #ifdef XFS_WARN | |
9130090b DC |
254 | |
255 | #define ASSERT(expr) \ | |
bf46ecc3 | 256 | (likely(expr) ? (void)0 : asswarn(#expr, __FILE__, __LINE__)) |
9130090b | 257 | |
742ae1e3 DC |
258 | #else /* !DEBUG && !XFS_WARN */ |
259 | ||
260 | #define ASSERT(expr) ((void)0) | |
261 | ||
742ae1e3 | 262 | #endif /* XFS_WARN */ |
9130090b DC |
263 | #endif /* DEBUG */ |
264 | ||
fc41e2a1 CH |
265 | #define STATIC static noinline |
266 | ||
6d3ebaae | 267 | #ifdef CONFIG_XFS_RT |
b31ff3cd RW |
268 | |
269 | /* | |
270 | * make sure we ignore the inode flag if the filesystem doesn't have a | |
271 | * configured realtime device. | |
272 | */ | |
273 | #define XFS_IS_REALTIME_INODE(ip) \ | |
274 | (((ip)->i_d.di_flags & XFS_DIFLAG_REALTIME) && \ | |
275 | (ip)->i_mount->m_rtdev_targp) | |
a0158315 | 276 | #define XFS_IS_REALTIME_MOUNT(mp) ((mp)->m_rtdev_targp ? 1 : 0) |
6d3ebaae CH |
277 | #else |
278 | #define XFS_IS_REALTIME_INODE(ip) (0) | |
a0158315 | 279 | #define XFS_IS_REALTIME_MOUNT(mp) (0) |
6d3ebaae CH |
280 | #endif |
281 | ||
c9690043 DW |
282 | /* |
283 | * Starting in Linux 4.15, the %p (raw pointer value) printk modifier | |
284 | * prints a hashed version of the pointer to avoid leaking kernel | |
285 | * pointers into dmesg. If we're trying to debug the kernel we want the | |
286 | * raw values, so override this behavior as best we can. | |
287 | */ | |
288 | #ifdef DEBUG | |
289 | # define PTR_FMT "%px" | |
290 | #else | |
291 | # define PTR_FMT "%p" | |
292 | #endif | |
293 | ||
1da177e4 | 294 | #endif /* __XFS_LINUX__ */ |