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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 | 28 | #include <linux/mm.h> |
4a2d01b0 | 29 | #include <linux/sched/mm.h> |
1da177e4 LT |
30 | #include <linux/kernel.h> |
31 | #include <linux/blkdev.h> | |
32 | #include <linux/slab.h> | |
bc02e869 | 33 | #include <linux/crc32c.h> |
1da177e4 | 34 | #include <linux/module.h> |
a0b0b8a5 | 35 | #include <linux/mutex.h> |
1da177e4 LT |
36 | #include <linux/file.h> |
37 | #include <linux/swap.h> | |
38 | #include <linux/errno.h> | |
174cd4b1 | 39 | #include <linux/sched/signal.h> |
1da177e4 LT |
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> | |
1da177e4 | 48 | #include <linux/sort.h> |
e8234a68 DC |
49 | #include <linux/cpu.h> |
50 | #include <linux/notifier.h> | |
01e1b69c | 51 | #include <linux/delay.h> |
af3a2e8a | 52 | #include <linux/log2.h> |
007c61c6 | 53 | #include <linux/spinlock.h> |
64275ea4 | 54 | #include <linux/random.h> |
189f4bf2 | 55 | #include <linux/ctype.h> |
6bfb3d06 | 56 | #include <linux/writeback.h> |
6c77b0ea | 57 | #include <linux/capability.h> |
0030807c CH |
58 | #include <linux/kthread.h> |
59 | #include <linux/freezer.h> | |
8a072a4d | 60 | #include <linux/list_sort.h> |
3d6e0361 | 61 | #include <linux/ratelimit.h> |
6031e73a | 62 | #include <linux/rhashtable.h> |
1da177e4 LT |
63 | |
64 | #include <asm/page.h> | |
65 | #include <asm/div64.h> | |
66 | #include <asm/param.h> | |
7c0f6ba6 | 67 | #include <linux/uaccess.h> |
1da177e4 LT |
68 | #include <asm/byteorder.h> |
69 | #include <asm/unaligned.h> | |
70 | ||
b92cc59f | 71 | #include "xfs_fs.h" |
06f8e2d6 AE |
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" | |
51582170 | 77 | #include "xfs_cksum.h" |
06f8e2d6 AE |
78 | #include "xfs_buf.h" |
79 | #include "xfs_message.h" | |
1da177e4 | 80 | |
218106a1 CH |
81 | #ifdef __BIG_ENDIAN |
82 | #define XFS_NATIVE_HOST 1 | |
83 | #else | |
84 | #undef XFS_NATIVE_HOST | |
85 | #endif | |
86 | ||
1da177e4 LT |
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 | |
1da177e4 LT |
96 | #define xfs_inherit_nosymlinks xfs_params.inherit_nosym.val |
97 | #define xfs_rotorstep xfs_params.rotorstep.val | |
d3446eac | 98 | #define xfs_inherit_nodefrag xfs_params.inherit_nodfrg.val |
2a82b8be | 99 | #define xfs_fstrm_centisecs xfs_params.fstrm_timer.val |
579b62fa | 100 | #define xfs_eofb_secs xfs_params.eofb_timer.val |
83104d44 | 101 | #define xfs_cowb_secs xfs_params.cowb_timer.val |
1da177e4 | 102 | |
59c1b082 | 103 | #define current_cpu() (raw_smp_processor_id()) |
1da177e4 | 104 | #define current_pid() (current->pid) |
59c1b082 | 105 | #define current_test_flags(f) (current->flags & (f)) |
59c1b082 NS |
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)))) | |
1da177e4 | 112 | |
1da177e4 | 113 | #define NBBY 8 /* number of bits per byte */ |
1da177e4 LT |
114 | |
115 | /* | |
116 | * Size of block device i/o is parameterized here. | |
117 | * Currently the system supports page-sized i/o. | |
118 | */ | |
09cbfeaf | 119 | #define BLKDEV_IOSHIFT PAGE_SHIFT |
1da177e4 LT |
120 | #define BLKDEV_IOSIZE (1<<BLKDEV_IOSHIFT) |
121 | /* number of BB's per block device block */ | |
122 | #define BLKDEV_BB BTOBB(BLKDEV_IOSIZE) | |
123 | ||
1da177e4 | 124 | #define ENOATTR ENODATA /* Attribute not found */ |
da2f4d67 NS |
125 | #define EWRONGFS EINVAL /* Mount with wrong filesystem type */ |
126 | #define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */ | |
ca23f8fd | 127 | #define EFSBADCRC EBADMSG /* Bad CRC detected */ |
1da177e4 LT |
128 | |
129 | #define SYNCHRONIZE() barrier() | |
130 | #define __return_address __builtin_return_address(0) | |
131 | ||
52c732ee DW |
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 | ||
6743099c | 139 | #define XFS_PROJID_DEFAULT 0 |
1da177e4 | 140 | |
1da177e4 | 141 | #define howmany(x, y) (((x)+((y)-1))/(y)) |
1da177e4 | 142 | |
e076b0f3 DC |
143 | static inline void delay(long ticks) |
144 | { | |
145 | schedule_timeout_uninterruptible(ticks); | |
146 | } | |
147 | ||
a31b1d3d BF |
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 | */ | |
154 | struct xfs_kobj { | |
155 | struct kobject kobject; | |
156 | struct completion complete; | |
157 | }; | |
158 | ||
80529c45 BD |
159 | struct xstats { |
160 | struct xfsstats __percpu *xs_stats; | |
161 | struct xfs_kobj xs_kobj; | |
162 | }; | |
163 | ||
164 | extern struct xstats xfsstats; | |
165 | ||
c5eeb7ec DE |
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 | */ | |
c8ce540d | 172 | static inline uint32_t xfs_kuid_to_uid(kuid_t uid) |
c5eeb7ec DE |
173 | { |
174 | return from_kuid(&init_user_ns, uid); | |
175 | } | |
176 | ||
c8ce540d | 177 | static inline kuid_t xfs_uid_to_kuid(uint32_t uid) |
c5eeb7ec DE |
178 | { |
179 | return make_kuid(&init_user_ns, uid); | |
180 | } | |
181 | ||
c8ce540d | 182 | static inline uint32_t xfs_kgid_to_gid(kgid_t gid) |
c5eeb7ec DE |
183 | { |
184 | return from_kgid(&init_user_ns, gid); | |
185 | } | |
186 | ||
c8ce540d | 187 | static inline kgid_t xfs_gid_to_kgid(uint32_t gid) |
c5eeb7ec DE |
188 | { |
189 | return make_kgid(&init_user_ns, gid); | |
190 | } | |
191 | ||
274e0a1f CH |
192 | static 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 | ||
197 | static inline xfs_dev_t linux_to_xfs_dev_t(dev_t dev) | |
198 | { | |
199 | return sysv_encode_dev(dev); | |
200 | } | |
201 | ||
cde410a9 NS |
202 | /* |
203 | * Various platform dependent calls that don't fit anywhere else | |
204 | */ | |
380b5dc0 | 205 | #define xfs_sort(a,n,s,fn) sort(a,n,s,fn,NULL) |
1da177e4 | 206 | #define xfs_stack_trace() dump_stack() |
1da177e4 | 207 | |
c8ce540d | 208 | static inline uint64_t roundup_64(uint64_t x, uint32_t y) |
1da177e4 LT |
209 | { |
210 | x += y - 1; | |
211 | do_div(x, y); | |
d99831ff | 212 | return x * y; |
1da177e4 LT |
213 | } |
214 | ||
c8ce540d | 215 | static inline uint64_t howmany_64(uint64_t x, uint32_t y) |
68c32715 NS |
216 | { |
217 | x += y - 1; | |
218 | do_div(x, y); | |
219 | return x; | |
220 | } | |
221 | ||
6ad5b325 CH |
222 | int xfs_rw_bdev(struct block_device *bdev, sector_t sector, unsigned int count, |
223 | char *data, unsigned int op); | |
224 | ||
9130090b | 225 | #define ASSERT_ALWAYS(expr) \ |
9842b56c | 226 | (likely(expr) ? (void)0 : assfail(NULL, #expr, __FILE__, __LINE__)) |
9130090b | 227 | |
742ae1e3 DC |
228 | #ifdef DEBUG |
229 | #define ASSERT(expr) \ | |
9842b56c | 230 | (likely(expr) ? (void)0 : assfail(NULL, #expr, __FILE__, __LINE__)) |
9130090b | 231 | |
1ec28615 DW |
232 | #define XFS_IS_CORRUPT(mp, expr) \ |
233 | (unlikely(expr) ? assfail((mp), #expr, __FILE__, __LINE__), \ | |
234 | true : false) | |
235 | ||
742ae1e3 DC |
236 | #else /* !DEBUG */ |
237 | ||
238 | #ifdef XFS_WARN | |
9130090b DC |
239 | |
240 | #define ASSERT(expr) \ | |
9842b56c | 241 | (likely(expr) ? (void)0 : asswarn(NULL, #expr, __FILE__, __LINE__)) |
9130090b | 242 | |
1ec28615 DW |
243 | #define XFS_IS_CORRUPT(mp, expr) \ |
244 | (unlikely(expr) ? asswarn((mp), #expr, __FILE__, __LINE__), \ | |
245 | true : false) | |
246 | ||
742ae1e3 DC |
247 | #else /* !DEBUG && !XFS_WARN */ |
248 | ||
1ec28615 DW |
249 | #define ASSERT(expr) ((void)0) |
250 | #define XFS_IS_CORRUPT(mp, expr) \ | |
251 | (unlikely(expr) ? XFS_ERROR_REPORT(#expr, XFS_ERRLEVEL_LOW, (mp)), \ | |
252 | true : false) | |
742ae1e3 | 253 | |
742ae1e3 | 254 | #endif /* XFS_WARN */ |
9130090b DC |
255 | #endif /* DEBUG */ |
256 | ||
fc41e2a1 CH |
257 | #define STATIC static noinline |
258 | ||
6d3ebaae | 259 | #ifdef CONFIG_XFS_RT |
b31ff3cd RW |
260 | |
261 | /* | |
262 | * make sure we ignore the inode flag if the filesystem doesn't have a | |
263 | * configured realtime device. | |
264 | */ | |
265 | #define XFS_IS_REALTIME_INODE(ip) \ | |
266 | (((ip)->i_d.di_flags & XFS_DIFLAG_REALTIME) && \ | |
267 | (ip)->i_mount->m_rtdev_targp) | |
a0158315 | 268 | #define XFS_IS_REALTIME_MOUNT(mp) ((mp)->m_rtdev_targp ? 1 : 0) |
6d3ebaae CH |
269 | #else |
270 | #define XFS_IS_REALTIME_INODE(ip) (0) | |
a0158315 | 271 | #define XFS_IS_REALTIME_MOUNT(mp) (0) |
6d3ebaae CH |
272 | #endif |
273 | ||
c9690043 DW |
274 | /* |
275 | * Starting in Linux 4.15, the %p (raw pointer value) printk modifier | |
276 | * prints a hashed version of the pointer to avoid leaking kernel | |
277 | * pointers into dmesg. If we're trying to debug the kernel we want the | |
278 | * raw values, so override this behavior as best we can. | |
279 | */ | |
280 | #ifdef DEBUG | |
281 | # define PTR_FMT "%px" | |
282 | #else | |
283 | # define PTR_FMT "%p" | |
284 | #endif | |
285 | ||
1da177e4 | 286 | #endif /* __XFS_LINUX__ */ |