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Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
f7ab093f MM |
2 | /* |
3 | * (C) 2001 Clemson University and The University of Chicago | |
4 | * | |
5 | * See COPYING in top-level directory. | |
6 | */ | |
7 | ||
8 | /* | |
8bb8aefd | 9 | * The ORANGEFS Linux kernel support allows ORANGEFS volumes to be mounted and |
f7ab093f MM |
10 | * accessed through the Linux VFS (i.e. using standard I/O system calls). |
11 | * This support is only needed on clients that wish to mount the file system. | |
12 | * | |
13 | */ | |
14 | ||
15 | /* | |
8bb8aefd | 16 | * Declarations and macros for the ORANGEFS Linux kernel support. |
f7ab093f MM |
17 | */ |
18 | ||
8bb8aefd YL |
19 | #ifndef __ORANGEFSKERNEL_H |
20 | #define __ORANGEFSKERNEL_H | |
f7ab093f MM |
21 | |
22 | #include <linux/kernel.h> | |
23 | #include <linux/moduleparam.h> | |
24 | #include <linux/statfs.h> | |
25 | #include <linux/backing-dev.h> | |
26 | #include <linux/device.h> | |
27 | #include <linux/mpage.h> | |
28 | #include <linux/namei.h> | |
29 | #include <linux/errno.h> | |
30 | #include <linux/init.h> | |
31 | #include <linux/module.h> | |
32 | #include <linux/slab.h> | |
33 | #include <linux/types.h> | |
34 | #include <linux/fs.h> | |
35 | #include <linux/vmalloc.h> | |
36 | ||
37 | #include <linux/aio.h> | |
38 | #include <linux/posix_acl.h> | |
39 | #include <linux/posix_acl_xattr.h> | |
40 | #include <linux/compat.h> | |
41 | #include <linux/mount.h> | |
42 | #include <linux/uaccess.h> | |
43 | #include <linux/atomic.h> | |
44 | #include <linux/uio.h> | |
174cd4b1 | 45 | #include <linux/sched/signal.h> |
f7ab093f MM |
46 | #include <linux/mm.h> |
47 | #include <linux/wait.h> | |
48 | #include <linux/dcache.h> | |
49 | #include <linux/pagemap.h> | |
50 | #include <linux/poll.h> | |
51 | #include <linux/rwsem.h> | |
52 | #include <linux/xattr.h> | |
53 | #include <linux/exportfs.h> | |
54 | ||
55 | #include <asm/unaligned.h> | |
56 | ||
575e9461 | 57 | #include "orangefs-dev-proto.h" |
f7ab093f | 58 | |
8bb8aefd | 59 | #define ORANGEFS_DEFAULT_OP_TIMEOUT_SECS 20 |
f7ab093f | 60 | |
8bb8aefd | 61 | #define ORANGEFS_BUFMAP_WAIT_TIMEOUT_SECS 30 |
f7ab093f | 62 | |
8bb8aefd | 63 | #define ORANGEFS_DEFAULT_SLOT_TIMEOUT_SECS 900 /* 15 minutes */ |
f7ab093f | 64 | |
8bb8aefd | 65 | #define ORANGEFS_REQDEVICE_NAME "pvfs2-req" |
f7ab093f | 66 | |
8bb8aefd YL |
67 | #define ORANGEFS_DEVREQ_MAGIC 0x20030529 |
68 | #define ORANGEFS_LINK_MAX 0x000000FF | |
69 | #define ORANGEFS_PURGE_RETRY_COUNT 0x00000005 | |
8bb8aefd YL |
70 | #define ORANGEFS_MAX_NUM_OPTIONS 0x00000004 |
71 | #define ORANGEFS_MAX_MOUNT_OPT_LEN 0x00000080 | |
72 | #define ORANGEFS_MAX_FSKEY_LEN 64 | |
f7ab093f | 73 | |
cf0c2771 | 74 | #define MAX_DEV_REQ_UPSIZE (2 * sizeof(__s32) + \ |
8bb8aefd | 75 | sizeof(__u64) + sizeof(struct orangefs_upcall_s)) |
cf0c2771 | 76 | #define MAX_DEV_REQ_DOWNSIZE (2 * sizeof(__s32) + \ |
8bb8aefd | 77 | sizeof(__u64) + sizeof(struct orangefs_downcall_s)) |
f7ab093f | 78 | |
f7ab093f | 79 | /* |
8bb8aefd | 80 | * valid orangefs kernel operation states |
f7ab093f MM |
81 | * |
82 | * unknown - op was just initialized | |
83 | * waiting - op is on request_list (upward bound) | |
84 | * inprogr - op is in progress (waiting for downcall) | |
85 | * serviced - op has matching downcall; ok | |
86 | * purged - op has to start a timer since client-core | |
87 | * exited uncleanly before servicing op | |
ed42fe05 | 88 | * given up - submitter has given up waiting for it |
f7ab093f | 89 | */ |
8bb8aefd | 90 | enum orangefs_vfs_op_states { |
f7ab093f MM |
91 | OP_VFS_STATE_UNKNOWN = 0, |
92 | OP_VFS_STATE_WAITING = 1, | |
93 | OP_VFS_STATE_INPROGR = 2, | |
94 | OP_VFS_STATE_SERVICED = 4, | |
95 | OP_VFS_STATE_PURGED = 8, | |
ed42fe05 | 96 | OP_VFS_STATE_GIVEN_UP = 16, |
f7ab093f MM |
97 | }; |
98 | ||
f7ab093f | 99 | /* |
8bb8aefd | 100 | * orangefs kernel memory related flags |
f7ab093f MM |
101 | */ |
102 | ||
538e3048 | 103 | #if (defined CONFIG_DEBUG_SLAB) |
8bb8aefd | 104 | #define ORANGEFS_CACHE_CREATE_FLAGS SLAB_RED_ZONE |
f7ab093f | 105 | #else |
8bb8aefd | 106 | #define ORANGEFS_CACHE_CREATE_FLAGS 0 |
538e3048 | 107 | #endif |
f7ab093f | 108 | |
8bb8aefd YL |
109 | extern int orangefs_init_acl(struct inode *inode, struct inode *dir); |
110 | extern const struct xattr_handler *orangefs_xattr_handlers[]; | |
f7ab093f | 111 | |
8bb8aefd YL |
112 | extern struct posix_acl *orangefs_get_acl(struct inode *inode, int type); |
113 | extern int orangefs_set_acl(struct inode *inode, struct posix_acl *acl, int type); | |
f7ab093f | 114 | |
f7ab093f MM |
115 | /* |
116 | * Redefine xtvec structure so that we could move helper functions out of | |
117 | * the define | |
118 | */ | |
119 | struct xtvec { | |
120 | __kernel_off_t xtv_off; /* must be off_t */ | |
121 | __kernel_size_t xtv_len; /* must be size_t */ | |
122 | }; | |
123 | ||
124 | /* | |
8bb8aefd | 125 | * orangefs data structures |
f7ab093f | 126 | */ |
8bb8aefd YL |
127 | struct orangefs_kernel_op_s { |
128 | enum orangefs_vfs_op_states op_state; | |
f7ab093f MM |
129 | __u64 tag; |
130 | ||
131 | /* | |
d37c0f30 MM |
132 | * Set uses_shared_memory to non zero if this operation uses |
133 | * shared memory. If true, then a retry on the op must also | |
134 | * get a new shared memory buffer and re-populate it. | |
135 | * Cancels don't care - it only matters for service_operation() | |
136 | * retry logics and cancels don't go through it anymore. It | |
137 | * safely stays non-zero when we use it as slot_to_free. | |
f7ab093f | 138 | */ |
78699e29 AV |
139 | union { |
140 | int uses_shared_memory; | |
141 | int slot_to_free; | |
142 | }; | |
f7ab093f | 143 | |
8bb8aefd YL |
144 | struct orangefs_upcall_s upcall; |
145 | struct orangefs_downcall_s downcall; | |
f7ab093f | 146 | |
d2d87a3b | 147 | struct completion waitq; |
f7ab093f MM |
148 | spinlock_t lock; |
149 | ||
f7ab093f MM |
150 | int attempts; |
151 | ||
152 | struct list_head list; | |
153 | }; | |
154 | ||
60831949 AV |
155 | #define set_op_state_waiting(op) ((op)->op_state = OP_VFS_STATE_WAITING) |
156 | #define set_op_state_inprogress(op) ((op)->op_state = OP_VFS_STATE_INPROGR) | |
2d4cae0d | 157 | #define set_op_state_given_up(op) ((op)->op_state = OP_VFS_STATE_GIVEN_UP) |
60831949 AV |
158 | static inline void set_op_state_serviced(struct orangefs_kernel_op_s *op) |
159 | { | |
160 | op->op_state = OP_VFS_STATE_SERVICED; | |
d2d87a3b | 161 | complete(&op->waitq); |
60831949 | 162 | } |
60831949 AV |
163 | |
164 | #define op_state_waiting(op) ((op)->op_state & OP_VFS_STATE_WAITING) | |
165 | #define op_state_in_progress(op) ((op)->op_state & OP_VFS_STATE_INPROGR) | |
166 | #define op_state_serviced(op) ((op)->op_state & OP_VFS_STATE_SERVICED) | |
167 | #define op_state_purged(op) ((op)->op_state & OP_VFS_STATE_PURGED) | |
ed42fe05 | 168 | #define op_state_given_up(op) ((op)->op_state & OP_VFS_STATE_GIVEN_UP) |
78699e29 | 169 | #define op_is_cancel(op) ((op)->upcall.type == ORANGEFS_VFS_OP_CANCEL) |
ed42fe05 | 170 | |
c1223ca4 | 171 | void op_release(struct orangefs_kernel_op_s *op); |
60831949 | 172 | |
78699e29 AV |
173 | extern void orangefs_bufmap_put(int); |
174 | static inline void put_cancel(struct orangefs_kernel_op_s *op) | |
175 | { | |
176 | orangefs_bufmap_put(op->slot_to_free); | |
177 | op_release(op); | |
178 | } | |
179 | ||
180 | static inline void set_op_state_purged(struct orangefs_kernel_op_s *op) | |
181 | { | |
182 | spin_lock(&op->lock); | |
183 | if (unlikely(op_is_cancel(op))) { | |
05a50a5b | 184 | list_del_init(&op->list); |
78699e29 AV |
185 | spin_unlock(&op->lock); |
186 | put_cancel(op); | |
187 | } else { | |
188 | op->op_state |= OP_VFS_STATE_PURGED; | |
d2d87a3b | 189 | complete(&op->waitq); |
78699e29 AV |
190 | spin_unlock(&op->lock); |
191 | } | |
192 | } | |
193 | ||
8bb8aefd YL |
194 | /* per inode private orangefs info */ |
195 | struct orangefs_inode_s { | |
196 | struct orangefs_object_kref refn; | |
197 | char link_target[ORANGEFS_NAME_MAX]; | |
f7ab093f MM |
198 | __s64 blksize; |
199 | /* | |
200 | * Reading/Writing Extended attributes need to acquire the appropriate | |
8bb8aefd | 201 | * reader/writer semaphore on the orangefs_inode_s structure. |
f7ab093f MM |
202 | */ |
203 | struct rw_semaphore xattr_sem; | |
204 | ||
205 | struct inode vfs_inode; | |
206 | sector_t last_failed_block_index_read; | |
207 | ||
71680c18 | 208 | unsigned long getattr_time; |
68a24a6c | 209 | u32 getattr_mask; |
f7ab093f MM |
210 | }; |
211 | ||
8bb8aefd YL |
212 | /* per superblock private orangefs info */ |
213 | struct orangefs_sb_info_s { | |
214 | struct orangefs_khandle root_khandle; | |
f7ab093f MM |
215 | __s32 fs_id; |
216 | int id; | |
217 | int flags; | |
8bb8aefd YL |
218 | #define ORANGEFS_OPT_INTR 0x01 |
219 | #define ORANGEFS_OPT_LOCAL_LOCK 0x02 | |
220 | char devname[ORANGEFS_MAX_SERVER_ADDR_LEN]; | |
f7ab093f MM |
221 | struct super_block *sb; |
222 | int mount_pending; | |
1ec1688c | 223 | int no_list; |
f7ab093f MM |
224 | struct list_head list; |
225 | }; | |
226 | ||
f7ab093f MM |
227 | /* |
228 | * structure that holds the state of any async I/O operation issued | |
229 | * through the VFS. Needed especially to handle cancellation requests | |
230 | * or even completion notification so that the VFS client-side daemon | |
231 | * can free up its vfs_request slots. | |
232 | */ | |
8bb8aefd | 233 | struct orangefs_kiocb_s { |
f7ab093f MM |
234 | /* the pointer to the task that initiated the AIO */ |
235 | struct task_struct *tsk; | |
236 | ||
237 | /* pointer to the kiocb that kicked this operation */ | |
238 | struct kiocb *kiocb; | |
239 | ||
240 | /* buffer index that was used for the I/O */ | |
8bb8aefd | 241 | struct orangefs_bufmap *bufmap; |
f7ab093f MM |
242 | int buffer_index; |
243 | ||
8bb8aefd YL |
244 | /* orangefs kernel operation type */ |
245 | struct orangefs_kernel_op_s *op; | |
f7ab093f | 246 | |
f7ab093f MM |
247 | /* set to indicate the type of the operation */ |
248 | int rw; | |
249 | ||
250 | /* file offset */ | |
251 | loff_t offset; | |
252 | ||
253 | /* and the count in bytes */ | |
254 | size_t bytes_to_be_copied; | |
255 | ||
256 | ssize_t bytes_copied; | |
257 | int needs_cleanup; | |
258 | }; | |
259 | ||
8bb8aefd | 260 | struct orangefs_stats { |
f7ab093f MM |
261 | unsigned long cache_hits; |
262 | unsigned long cache_misses; | |
263 | unsigned long reads; | |
264 | unsigned long writes; | |
265 | }; | |
266 | ||
889d5f1b | 267 | extern struct orangefs_stats orangefs_stats; |
f7ab093f MM |
268 | |
269 | /* | |
54804949 MM |
270 | * NOTE: See Documentation/filesystems/porting for information |
271 | * on implementing FOO_I and properly accessing fs private data | |
272 | */ | |
8bb8aefd | 273 | static inline struct orangefs_inode_s *ORANGEFS_I(struct inode *inode) |
f7ab093f | 274 | { |
8bb8aefd | 275 | return container_of(inode, struct orangefs_inode_s, vfs_inode); |
f7ab093f MM |
276 | } |
277 | ||
8bb8aefd | 278 | static inline struct orangefs_sb_info_s *ORANGEFS_SB(struct super_block *sb) |
f7ab093f | 279 | { |
8bb8aefd | 280 | return (struct orangefs_sb_info_s *) sb->s_fs_info; |
f7ab093f MM |
281 | } |
282 | ||
283 | /* ino_t descends from "unsigned long", 8 bytes, 64 bits. */ | |
8bb8aefd | 284 | static inline ino_t orangefs_khandle_to_ino(struct orangefs_khandle *khandle) |
f7ab093f MM |
285 | { |
286 | union { | |
287 | unsigned char u[8]; | |
288 | __u64 ino; | |
289 | } ihandle; | |
290 | ||
291 | ihandle.u[0] = khandle->u[0] ^ khandle->u[4]; | |
292 | ihandle.u[1] = khandle->u[1] ^ khandle->u[5]; | |
293 | ihandle.u[2] = khandle->u[2] ^ khandle->u[6]; | |
294 | ihandle.u[3] = khandle->u[3] ^ khandle->u[7]; | |
295 | ihandle.u[4] = khandle->u[12] ^ khandle->u[8]; | |
296 | ihandle.u[5] = khandle->u[13] ^ khandle->u[9]; | |
297 | ihandle.u[6] = khandle->u[14] ^ khandle->u[10]; | |
298 | ihandle.u[7] = khandle->u[15] ^ khandle->u[11]; | |
299 | ||
300 | return ihandle.ino; | |
301 | } | |
302 | ||
8bb8aefd | 303 | static inline struct orangefs_khandle *get_khandle_from_ino(struct inode *inode) |
f7ab093f | 304 | { |
8bb8aefd | 305 | return &(ORANGEFS_I(inode)->refn.khandle); |
f7ab093f MM |
306 | } |
307 | ||
f7ab093f MM |
308 | static inline ino_t get_ino_from_khandle(struct inode *inode) |
309 | { | |
8bb8aefd | 310 | struct orangefs_khandle *khandle; |
f7ab093f MM |
311 | ino_t ino; |
312 | ||
313 | khandle = get_khandle_from_ino(inode); | |
8bb8aefd | 314 | ino = orangefs_khandle_to_ino(khandle); |
f7ab093f MM |
315 | return ino; |
316 | } | |
317 | ||
318 | static inline ino_t get_parent_ino_from_dentry(struct dentry *dentry) | |
319 | { | |
320 | return get_ino_from_khandle(dentry->d_parent->d_inode); | |
321 | } | |
322 | ||
323 | static inline int is_root_handle(struct inode *inode) | |
324 | { | |
325 | gossip_debug(GOSSIP_DCACHE_DEBUG, | |
326 | "%s: root handle: %pU, this handle: %pU:\n", | |
327 | __func__, | |
8bb8aefd | 328 | &ORANGEFS_SB(inode->i_sb)->root_khandle, |
f7ab093f MM |
329 | get_khandle_from_ino(inode)); |
330 | ||
8bb8aefd | 331 | if (ORANGEFS_khandle_cmp(&(ORANGEFS_SB(inode->i_sb)->root_khandle), |
f7ab093f MM |
332 | get_khandle_from_ino(inode))) |
333 | return 0; | |
334 | else | |
335 | return 1; | |
336 | } | |
337 | ||
8bb8aefd | 338 | static inline int match_handle(struct orangefs_khandle resp_handle, |
f7ab093f MM |
339 | struct inode *inode) |
340 | { | |
341 | gossip_debug(GOSSIP_DCACHE_DEBUG, | |
342 | "%s: one handle: %pU, another handle:%pU:\n", | |
343 | __func__, | |
344 | &resp_handle, | |
345 | get_khandle_from_ino(inode)); | |
346 | ||
8bb8aefd | 347 | if (ORANGEFS_khandle_cmp(&resp_handle, get_khandle_from_ino(inode))) |
f7ab093f MM |
348 | return 0; |
349 | else | |
350 | return 1; | |
351 | } | |
352 | ||
353 | /* | |
8bb8aefd | 354 | * defined in orangefs-cache.c |
f7ab093f MM |
355 | */ |
356 | int op_cache_initialize(void); | |
357 | int op_cache_finalize(void); | |
8bb8aefd | 358 | struct orangefs_kernel_op_s *op_alloc(__s32 type); |
78699e29 | 359 | void orangefs_new_tag(struct orangefs_kernel_op_s *op); |
8bb8aefd | 360 | char *get_opname_string(struct orangefs_kernel_op_s *new_op); |
f7ab093f | 361 | |
8bb8aefd YL |
362 | int orangefs_inode_cache_initialize(void); |
363 | int orangefs_inode_cache_finalize(void); | |
f7ab093f | 364 | |
f7ab093f | 365 | /* |
8bb8aefd | 366 | * defined in orangefs-mod.c |
f7ab093f MM |
367 | */ |
368 | void purge_inprogress_ops(void); | |
369 | ||
370 | /* | |
371 | * defined in waitqueue.c | |
372 | */ | |
f7ab093f MM |
373 | void purge_waiting_ops(void); |
374 | ||
375 | /* | |
376 | * defined in super.c | |
377 | */ | |
482664dd MB |
378 | extern uint64_t orangefs_features; |
379 | ||
8bb8aefd | 380 | struct dentry *orangefs_mount(struct file_system_type *fst, |
f7ab093f MM |
381 | int flags, |
382 | const char *devname, | |
383 | void *data); | |
384 | ||
8bb8aefd | 385 | void orangefs_kill_sb(struct super_block *sb); |
45996492 | 386 | int orangefs_remount(struct orangefs_sb_info_s *); |
f7ab093f MM |
387 | |
388 | int fsid_key_table_initialize(void); | |
389 | void fsid_key_table_finalize(void); | |
390 | ||
391 | /* | |
392 | * defined in inode.c | |
393 | */ | |
8bb8aefd YL |
394 | __u32 convert_to_orangefs_mask(unsigned long lite_mask); |
395 | struct inode *orangefs_new_inode(struct super_block *sb, | |
f7ab093f MM |
396 | struct inode *dir, |
397 | int mode, | |
398 | dev_t dev, | |
8bb8aefd | 399 | struct orangefs_object_kref *ref); |
f7ab093f | 400 | |
8bb8aefd | 401 | int orangefs_setattr(struct dentry *dentry, struct iattr *iattr); |
f7ab093f | 402 | |
a528d35e DH |
403 | int orangefs_getattr(const struct path *path, struct kstat *stat, |
404 | u32 request_mask, unsigned int flags); | |
f7ab093f | 405 | |
933287da MB |
406 | int orangefs_permission(struct inode *inode, int mask); |
407 | ||
a55f2d86 MB |
408 | int orangefs_update_time(struct inode *, struct timespec *, int); |
409 | ||
f7ab093f MM |
410 | /* |
411 | * defined in xattr.c | |
412 | */ | |
8bb8aefd | 413 | int orangefs_setxattr(struct dentry *dentry, |
f7ab093f MM |
414 | const char *name, |
415 | const void *value, | |
416 | size_t size, | |
417 | int flags); | |
418 | ||
8bb8aefd | 419 | ssize_t orangefs_getxattr(struct dentry *dentry, |
f7ab093f MM |
420 | const char *name, |
421 | void *buffer, | |
422 | size_t size); | |
423 | ||
8bb8aefd | 424 | ssize_t orangefs_listxattr(struct dentry *dentry, char *buffer, size_t size); |
f7ab093f MM |
425 | |
426 | /* | |
427 | * defined in namei.c | |
428 | */ | |
8bb8aefd YL |
429 | struct inode *orangefs_iget(struct super_block *sb, |
430 | struct orangefs_object_kref *ref); | |
f7ab093f | 431 | |
8bb8aefd YL |
432 | ssize_t orangefs_inode_read(struct inode *inode, |
433 | struct iov_iter *iter, | |
434 | loff_t *offset, | |
435 | loff_t readahead_size); | |
f7ab093f MM |
436 | |
437 | /* | |
8bb8aefd | 438 | * defined in devorangefs-req.c |
f7ab093f | 439 | */ |
482664dd | 440 | extern uint32_t orangefs_userspace_version; |
f2ee3b75 | 441 | |
8bb8aefd YL |
442 | int orangefs_dev_init(void); |
443 | void orangefs_dev_cleanup(void); | |
f7ab093f | 444 | int is_daemon_in_service(void); |
78699e29 | 445 | bool __is_daemon_in_service(void); |
f7ab093f MM |
446 | |
447 | /* | |
8bb8aefd | 448 | * defined in orangefs-utils.c |
f7ab093f | 449 | */ |
8bb8aefd | 450 | __s32 fsid_of_op(struct orangefs_kernel_op_s *op); |
f7ab093f | 451 | |
8bb8aefd | 452 | ssize_t orangefs_inode_getxattr(struct inode *inode, |
f7ab093f MM |
453 | const char *name, |
454 | void *buffer, | |
455 | size_t size); | |
456 | ||
8bb8aefd | 457 | int orangefs_inode_setxattr(struct inode *inode, |
f7ab093f MM |
458 | const char *name, |
459 | const void *value, | |
460 | size_t size, | |
461 | int flags); | |
462 | ||
68a24a6c MB |
463 | int orangefs_inode_getattr(struct inode *inode, int new, int bypass, |
464 | u32 request_mask); | |
f7ab093f | 465 | |
5859d77e MB |
466 | int orangefs_inode_check_changed(struct inode *inode); |
467 | ||
8bb8aefd | 468 | int orangefs_inode_setattr(struct inode *inode, struct iattr *iattr); |
f7ab093f | 469 | |
8bb8aefd | 470 | int orangefs_unmount_sb(struct super_block *sb); |
f7ab093f | 471 | |
78699e29 | 472 | bool orangefs_cancel_op_in_progress(struct orangefs_kernel_op_s *op); |
f7ab093f | 473 | |
8bb8aefd | 474 | int orangefs_normalize_to_errno(__s32 error_code); |
f7ab093f | 475 | |
1d503617 | 476 | extern struct mutex orangefs_request_mutex; |
f7ab093f MM |
477 | extern int op_timeout_secs; |
478 | extern int slot_timeout_secs; | |
1d503617 MB |
479 | extern int orangefs_dcache_timeout_msecs; |
480 | extern int orangefs_getattr_timeout_msecs; | |
8bb8aefd YL |
481 | extern struct list_head orangefs_superblocks; |
482 | extern spinlock_t orangefs_superblocks_lock; | |
483 | extern struct list_head orangefs_request_list; | |
484 | extern spinlock_t orangefs_request_list_lock; | |
485 | extern wait_queue_head_t orangefs_request_list_waitq; | |
1d503617 MB |
486 | extern struct list_head *orangefs_htable_ops_in_progress; |
487 | extern spinlock_t orangefs_htable_ops_in_progress_lock; | |
f7ab093f MM |
488 | extern int hash_table_size; |
489 | ||
8bb8aefd | 490 | extern const struct address_space_operations orangefs_address_operations; |
6f3fc107 | 491 | extern const struct inode_operations orangefs_file_inode_operations; |
8bb8aefd | 492 | extern const struct file_operations orangefs_file_operations; |
6f3fc107 AV |
493 | extern const struct inode_operations orangefs_symlink_inode_operations; |
494 | extern const struct inode_operations orangefs_dir_inode_operations; | |
8bb8aefd YL |
495 | extern const struct file_operations orangefs_dir_operations; |
496 | extern const struct dentry_operations orangefs_dentry_operations; | |
497 | extern const struct file_operations orangefs_devreq_file_operations; | |
f7ab093f | 498 | |
8bb8aefd | 499 | extern wait_queue_head_t orangefs_bufmap_init_waitq; |
f7ab093f MM |
500 | |
501 | /* | |
502 | * misc convenience macros | |
503 | */ | |
f7ab093f | 504 | |
8bb8aefd YL |
505 | #define ORANGEFS_OP_INTERRUPTIBLE 1 /* service_operation() is interruptible */ |
506 | #define ORANGEFS_OP_PRIORITY 2 /* service_operation() is high priority */ | |
507 | #define ORANGEFS_OP_CANCELLATION 4 /* this is a cancellation */ | |
adcf34a2 | 508 | #define ORANGEFS_OP_NO_MUTEX 8 /* don't acquire request_mutex */ |
8bb8aefd | 509 | #define ORANGEFS_OP_ASYNC 16 /* Queue it, but don't wait */ |
f7ab093f | 510 | |
8bb8aefd | 511 | int service_operation(struct orangefs_kernel_op_s *op, |
f7ab093f MM |
512 | const char *op_name, |
513 | int flags); | |
514 | ||
f7ab093f | 515 | #define get_interruptible_flag(inode) \ |
8bb8aefd YL |
516 | ((ORANGEFS_SB(inode->i_sb)->flags & ORANGEFS_OPT_INTR) ? \ |
517 | ORANGEFS_OP_INTERRUPTIBLE : 0) | |
f7ab093f | 518 | |
f7ab093f MM |
519 | #define fill_default_sys_attrs(sys_attr, type, mode) \ |
520 | do { \ | |
78fee0b6 JH |
521 | sys_attr.owner = from_kuid(&init_user_ns, current_fsuid()); \ |
522 | sys_attr.group = from_kgid(&init_user_ns, current_fsgid()); \ | |
8bb8aefd | 523 | sys_attr.perms = ORANGEFS_util_translate_mode(mode); \ |
69a23de2 MB |
524 | sys_attr.mtime = 0; \ |
525 | sys_attr.atime = 0; \ | |
526 | sys_attr.ctime = 0; \ | |
8bb8aefd | 527 | sys_attr.mask = ORANGEFS_ATTR_SYS_ALL_SETABLE; \ |
f7ab093f MM |
528 | } while (0) |
529 | ||
804b1737 MS |
530 | static inline void orangefs_set_timeout(struct dentry *dentry) |
531 | { | |
532 | unsigned long time = jiffies + orangefs_dcache_timeout_msecs*HZ/1000; | |
533 | ||
534 | dentry->d_fsdata = (void *) time; | |
535 | } | |
536 | ||
8bb8aefd | 537 | #endif /* __ORANGEFSKERNEL_H */ |