Commit | Line | Data |
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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
5 | * This program is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU General Public License as | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
9 | * This program is distributed in the hope that it would be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
1da177e4 | 13 | * |
7b718769 NS |
14 | * You should have received a copy of the GNU General Public License |
15 | * along with this program; if not, write the Free Software Foundation, | |
16 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1da177e4 LT |
17 | */ |
18 | #ifndef __XFS_LINUX__ | |
19 | #define __XFS_LINUX__ | |
20 | ||
21 | #include <linux/types.h> | |
b1f359f9 | 22 | #include <linux/uuid.h> |
1da177e4 | 23 | |
4f3d71f6 DC |
24 | /* |
25 | * Kernel specific type declarations for XFS | |
26 | */ | |
4f3d71f6 | 27 | |
4f3d71f6 DC |
28 | typedef __s64 xfs_off_t; /* <file offset> type */ |
29 | typedef unsigned long long xfs_ino_t; /* <inode> type */ | |
30 | typedef __s64 xfs_daddr_t; /* <disk address> type */ | |
4f3d71f6 DC |
31 | typedef __u32 xfs_dev_t; |
32 | typedef __u32 xfs_nlink_t; | |
33 | ||
06f8e2d6 | 34 | #include "xfs_types.h" |
1da177e4 | 35 | |
06f8e2d6 AE |
36 | #include "kmem.h" |
37 | #include "mrlock.h" | |
1da177e4 | 38 | |
ab4a9b04 | 39 | #include <linux/semaphore.h> |
1da177e4 LT |
40 | #include <linux/mm.h> |
41 | #include <linux/kernel.h> | |
42 | #include <linux/blkdev.h> | |
43 | #include <linux/slab.h> | |
bc02e869 | 44 | #include <linux/crc32c.h> |
1da177e4 | 45 | #include <linux/module.h> |
a0b0b8a5 | 46 | #include <linux/mutex.h> |
1da177e4 LT |
47 | #include <linux/file.h> |
48 | #include <linux/swap.h> | |
49 | #include <linux/errno.h> | |
174cd4b1 | 50 | #include <linux/sched/signal.h> |
1da177e4 LT |
51 | #include <linux/bitops.h> |
52 | #include <linux/major.h> | |
53 | #include <linux/pagemap.h> | |
54 | #include <linux/vfs.h> | |
55 | #include <linux/seq_file.h> | |
56 | #include <linux/init.h> | |
57 | #include <linux/list.h> | |
58 | #include <linux/proc_fs.h> | |
1da177e4 | 59 | #include <linux/sort.h> |
e8234a68 DC |
60 | #include <linux/cpu.h> |
61 | #include <linux/notifier.h> | |
01e1b69c | 62 | #include <linux/delay.h> |
af3a2e8a | 63 | #include <linux/log2.h> |
007c61c6 | 64 | #include <linux/spinlock.h> |
64275ea4 | 65 | #include <linux/random.h> |
189f4bf2 | 66 | #include <linux/ctype.h> |
6bfb3d06 | 67 | #include <linux/writeback.h> |
6c77b0ea | 68 | #include <linux/capability.h> |
0030807c CH |
69 | #include <linux/kthread.h> |
70 | #include <linux/freezer.h> | |
8a072a4d | 71 | #include <linux/list_sort.h> |
3d6e0361 | 72 | #include <linux/ratelimit.h> |
6031e73a | 73 | #include <linux/rhashtable.h> |
1da177e4 LT |
74 | |
75 | #include <asm/page.h> | |
76 | #include <asm/div64.h> | |
77 | #include <asm/param.h> | |
7c0f6ba6 | 78 | #include <linux/uaccess.h> |
1da177e4 LT |
79 | #include <asm/byteorder.h> |
80 | #include <asm/unaligned.h> | |
81 | ||
b92cc59f | 82 | #include "xfs_fs.h" |
06f8e2d6 AE |
83 | #include "xfs_stats.h" |
84 | #include "xfs_sysctl.h" | |
85 | #include "xfs_iops.h" | |
86 | #include "xfs_aops.h" | |
87 | #include "xfs_super.h" | |
51582170 | 88 | #include "xfs_cksum.h" |
06f8e2d6 AE |
89 | #include "xfs_buf.h" |
90 | #include "xfs_message.h" | |
1da177e4 | 91 | |
218106a1 CH |
92 | #ifdef __BIG_ENDIAN |
93 | #define XFS_NATIVE_HOST 1 | |
94 | #else | |
95 | #undef XFS_NATIVE_HOST | |
96 | #endif | |
97 | ||
1da177e4 LT |
98 | #define irix_sgid_inherit xfs_params.sgid_inherit.val |
99 | #define irix_symlink_mode xfs_params.symlink_mode.val | |
100 | #define xfs_panic_mask xfs_params.panic_mask.val | |
101 | #define xfs_error_level xfs_params.error_level.val | |
102 | #define xfs_syncd_centisecs xfs_params.syncd_timer.val | |
103 | #define xfs_stats_clear xfs_params.stats_clear.val | |
104 | #define xfs_inherit_sync xfs_params.inherit_sync.val | |
105 | #define xfs_inherit_nodump xfs_params.inherit_nodump.val | |
106 | #define xfs_inherit_noatime xfs_params.inherit_noatim.val | |
1da177e4 LT |
107 | #define xfs_inherit_nosymlinks xfs_params.inherit_nosym.val |
108 | #define xfs_rotorstep xfs_params.rotorstep.val | |
d3446eac | 109 | #define xfs_inherit_nodefrag xfs_params.inherit_nodfrg.val |
2a82b8be | 110 | #define xfs_fstrm_centisecs xfs_params.fstrm_timer.val |
579b62fa | 111 | #define xfs_eofb_secs xfs_params.eofb_timer.val |
83104d44 | 112 | #define xfs_cowb_secs xfs_params.cowb_timer.val |
1da177e4 | 113 | |
59c1b082 | 114 | #define current_cpu() (raw_smp_processor_id()) |
1da177e4 | 115 | #define current_pid() (current->pid) |
59c1b082 | 116 | #define current_test_flags(f) (current->flags & (f)) |
59c1b082 NS |
117 | #define current_set_flags_nested(sp, f) \ |
118 | (*(sp) = current->flags, current->flags |= (f)) | |
119 | #define current_clear_flags_nested(sp, f) \ | |
120 | (*(sp) = current->flags, current->flags &= ~(f)) | |
121 | #define current_restore_flags_nested(sp, f) \ | |
122 | (current->flags = ((current->flags & ~(f)) | (*(sp) & (f)))) | |
1da177e4 | 123 | |
007c61c6 ES |
124 | #define spinlock_destroy(lock) |
125 | ||
1da177e4 | 126 | #define NBBY 8 /* number of bits per byte */ |
1da177e4 LT |
127 | |
128 | /* | |
129 | * Size of block device i/o is parameterized here. | |
130 | * Currently the system supports page-sized i/o. | |
131 | */ | |
09cbfeaf | 132 | #define BLKDEV_IOSHIFT PAGE_SHIFT |
1da177e4 LT |
133 | #define BLKDEV_IOSIZE (1<<BLKDEV_IOSHIFT) |
134 | /* number of BB's per block device block */ | |
135 | #define BLKDEV_BB BTOBB(BLKDEV_IOSIZE) | |
136 | ||
1da177e4 | 137 | #define ENOATTR ENODATA /* Attribute not found */ |
da2f4d67 NS |
138 | #define EWRONGFS EINVAL /* Mount with wrong filesystem type */ |
139 | #define EFSCORRUPTED EUCLEAN /* Filesystem is corrupted */ | |
ca23f8fd | 140 | #define EFSBADCRC EBADMSG /* Bad CRC detected */ |
1da177e4 LT |
141 | |
142 | #define SYNCHRONIZE() barrier() | |
143 | #define __return_address __builtin_return_address(0) | |
144 | ||
52c732ee DW |
145 | /* |
146 | * Return the address of a label. Use barrier() so that the optimizer | |
147 | * won't reorder code to refactor the error jumpouts into a single | |
148 | * return, which throws off the reported address. | |
149 | */ | |
150 | #define __this_address ({ __label__ __here; __here: barrier(); &&__here; }) | |
151 | ||
6743099c | 152 | #define XFS_PROJID_DEFAULT 0 |
1da177e4 LT |
153 | |
154 | #define MIN(a,b) (min(a,b)) | |
155 | #define MAX(a,b) (max(a,b)) | |
156 | #define howmany(x, y) (((x)+((y)-1))/(y)) | |
1da177e4 | 157 | |
e076b0f3 DC |
158 | static inline void delay(long ticks) |
159 | { | |
160 | schedule_timeout_uninterruptible(ticks); | |
161 | } | |
162 | ||
a31b1d3d BF |
163 | /* |
164 | * XFS wrapper structure for sysfs support. It depends on external data | |
165 | * structures and is embedded in various internal data structures to implement | |
166 | * the XFS sysfs object heirarchy. Define it here for broad access throughout | |
167 | * the codebase. | |
168 | */ | |
169 | struct xfs_kobj { | |
170 | struct kobject kobject; | |
171 | struct completion complete; | |
172 | }; | |
173 | ||
80529c45 BD |
174 | struct xstats { |
175 | struct xfsstats __percpu *xs_stats; | |
176 | struct xfs_kobj xs_kobj; | |
177 | }; | |
178 | ||
179 | extern struct xstats xfsstats; | |
180 | ||
c5eeb7ec DE |
181 | /* Kernel uid/gid conversion. These are used to convert to/from the on disk |
182 | * uid_t/gid_t types to the kuid_t/kgid_t types that the kernel uses internally. | |
183 | * The conversion here is type only, the value will remain the same since we | |
184 | * are converting to the init_user_ns. The uid is later mapped to a particular | |
185 | * user namespace value when crossing the kernel/user boundary. | |
186 | */ | |
c8ce540d | 187 | static inline uint32_t xfs_kuid_to_uid(kuid_t uid) |
c5eeb7ec DE |
188 | { |
189 | return from_kuid(&init_user_ns, uid); | |
190 | } | |
191 | ||
c8ce540d | 192 | static inline kuid_t xfs_uid_to_kuid(uint32_t uid) |
c5eeb7ec DE |
193 | { |
194 | return make_kuid(&init_user_ns, uid); | |
195 | } | |
196 | ||
c8ce540d | 197 | static inline uint32_t xfs_kgid_to_gid(kgid_t gid) |
c5eeb7ec DE |
198 | { |
199 | return from_kgid(&init_user_ns, gid); | |
200 | } | |
201 | ||
c8ce540d | 202 | static inline kgid_t xfs_gid_to_kgid(uint32_t gid) |
c5eeb7ec DE |
203 | { |
204 | return make_kgid(&init_user_ns, gid); | |
205 | } | |
206 | ||
274e0a1f CH |
207 | static inline dev_t xfs_to_linux_dev_t(xfs_dev_t dev) |
208 | { | |
209 | return MKDEV(sysv_major(dev) & 0x1ff, sysv_minor(dev)); | |
210 | } | |
211 | ||
212 | static inline xfs_dev_t linux_to_xfs_dev_t(dev_t dev) | |
213 | { | |
214 | return sysv_encode_dev(dev); | |
215 | } | |
216 | ||
cde410a9 NS |
217 | /* |
218 | * Various platform dependent calls that don't fit anywhere else | |
219 | */ | |
380b5dc0 | 220 | #define xfs_sort(a,n,s,fn) sort(a,n,s,fn,NULL) |
1da177e4 | 221 | #define xfs_stack_trace() dump_stack() |
1da177e4 | 222 | |
1da177e4 LT |
223 | /* Side effect free 64 bit mod operation */ |
224 | static inline __u32 xfs_do_mod(void *a, __u32 b, int n) | |
225 | { | |
226 | switch (n) { | |
227 | case 4: | |
228 | return *(__u32 *)a % b; | |
229 | case 8: | |
230 | { | |
231 | __u64 c = *(__u64 *)a; | |
232 | return do_div(c, b); | |
233 | } | |
234 | } | |
235 | ||
236 | /* NOTREACHED */ | |
237 | return 0; | |
238 | } | |
1da177e4 | 239 | |
1da177e4 LT |
240 | #define do_mod(a, b) xfs_do_mod(&(a), (b), sizeof(a)) |
241 | ||
c8ce540d | 242 | static inline uint64_t roundup_64(uint64_t x, uint32_t y) |
1da177e4 LT |
243 | { |
244 | x += y - 1; | |
245 | do_div(x, y); | |
d99831ff | 246 | return x * y; |
1da177e4 LT |
247 | } |
248 | ||
c8ce540d | 249 | static inline uint64_t howmany_64(uint64_t x, uint32_t y) |
68c32715 NS |
250 | { |
251 | x += y - 1; | |
252 | do_div(x, y); | |
253 | return x; | |
254 | } | |
255 | ||
9130090b | 256 | #define ASSERT_ALWAYS(expr) \ |
bf46ecc3 | 257 | (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) |
9130090b | 258 | |
742ae1e3 DC |
259 | #ifdef DEBUG |
260 | #define ASSERT(expr) \ | |
bf46ecc3 | 261 | (likely(expr) ? (void)0 : assfail(#expr, __FILE__, __LINE__)) |
9130090b | 262 | |
742ae1e3 DC |
263 | #else /* !DEBUG */ |
264 | ||
265 | #ifdef XFS_WARN | |
9130090b DC |
266 | |
267 | #define ASSERT(expr) \ | |
bf46ecc3 | 268 | (likely(expr) ? (void)0 : asswarn(#expr, __FILE__, __LINE__)) |
9130090b | 269 | |
742ae1e3 DC |
270 | #else /* !DEBUG && !XFS_WARN */ |
271 | ||
272 | #define ASSERT(expr) ((void)0) | |
273 | ||
742ae1e3 | 274 | #endif /* XFS_WARN */ |
9130090b DC |
275 | #endif /* DEBUG */ |
276 | ||
fc41e2a1 CH |
277 | #define STATIC static noinline |
278 | ||
6d3ebaae | 279 | #ifdef CONFIG_XFS_RT |
b31ff3cd RW |
280 | |
281 | /* | |
282 | * make sure we ignore the inode flag if the filesystem doesn't have a | |
283 | * configured realtime device. | |
284 | */ | |
285 | #define XFS_IS_REALTIME_INODE(ip) \ | |
286 | (((ip)->i_d.di_flags & XFS_DIFLAG_REALTIME) && \ | |
287 | (ip)->i_mount->m_rtdev_targp) | |
a0158315 | 288 | #define XFS_IS_REALTIME_MOUNT(mp) ((mp)->m_rtdev_targp ? 1 : 0) |
6d3ebaae CH |
289 | #else |
290 | #define XFS_IS_REALTIME_INODE(ip) (0) | |
a0158315 | 291 | #define XFS_IS_REALTIME_MOUNT(mp) (0) |
6d3ebaae CH |
292 | #endif |
293 | ||
c9690043 DW |
294 | /* |
295 | * Starting in Linux 4.15, the %p (raw pointer value) printk modifier | |
296 | * prints a hashed version of the pointer to avoid leaking kernel | |
297 | * pointers into dmesg. If we're trying to debug the kernel we want the | |
298 | * raw values, so override this behavior as best we can. | |
299 | */ | |
300 | #ifdef DEBUG | |
301 | # define PTR_FMT "%px" | |
302 | #else | |
303 | # define PTR_FMT "%p" | |
304 | #endif | |
305 | ||
1da177e4 | 306 | #endif /* __XFS_LINUX__ */ |