Commit | Line | Data |
---|---|---|
f7ab093f MM |
1 | /* |
2 | * (C) 2001 Clemson University and The University of Chicago | |
3 | * | |
4 | * See COPYING in top-level directory. | |
5 | */ | |
6 | ||
7 | /* | |
8bb8aefd | 8 | * The ORANGEFS Linux kernel support allows ORANGEFS volumes to be mounted and |
f7ab093f MM |
9 | * accessed through the Linux VFS (i.e. using standard I/O system calls). |
10 | * This support is only needed on clients that wish to mount the file system. | |
11 | * | |
12 | */ | |
13 | ||
14 | /* | |
8bb8aefd | 15 | * Declarations and macros for the ORANGEFS Linux kernel support. |
f7ab093f MM |
16 | */ |
17 | ||
8bb8aefd YL |
18 | #ifndef __ORANGEFSKERNEL_H |
19 | #define __ORANGEFSKERNEL_H | |
f7ab093f MM |
20 | |
21 | #include <linux/kernel.h> | |
22 | #include <linux/moduleparam.h> | |
23 | #include <linux/statfs.h> | |
24 | #include <linux/backing-dev.h> | |
25 | #include <linux/device.h> | |
26 | #include <linux/mpage.h> | |
27 | #include <linux/namei.h> | |
28 | #include <linux/errno.h> | |
29 | #include <linux/init.h> | |
30 | #include <linux/module.h> | |
31 | #include <linux/slab.h> | |
32 | #include <linux/types.h> | |
33 | #include <linux/fs.h> | |
34 | #include <linux/vmalloc.h> | |
35 | ||
36 | #include <linux/aio.h> | |
37 | #include <linux/posix_acl.h> | |
38 | #include <linux/posix_acl_xattr.h> | |
39 | #include <linux/compat.h> | |
40 | #include <linux/mount.h> | |
41 | #include <linux/uaccess.h> | |
42 | #include <linux/atomic.h> | |
43 | #include <linux/uio.h> | |
44 | #include <linux/sched.h> | |
45 | #include <linux/mm.h> | |
46 | #include <linux/wait.h> | |
47 | #include <linux/dcache.h> | |
48 | #include <linux/pagemap.h> | |
49 | #include <linux/poll.h> | |
50 | #include <linux/rwsem.h> | |
51 | #include <linux/xattr.h> | |
52 | #include <linux/exportfs.h> | |
53 | ||
54 | #include <asm/unaligned.h> | |
55 | ||
575e9461 | 56 | #include "orangefs-dev-proto.h" |
f7ab093f | 57 | |
8bb8aefd YL |
58 | #ifdef ORANGEFS_KERNEL_DEBUG |
59 | #define ORANGEFS_DEFAULT_OP_TIMEOUT_SECS 10 | |
f7ab093f | 60 | #else |
8bb8aefd | 61 | #define ORANGEFS_DEFAULT_OP_TIMEOUT_SECS 20 |
f7ab093f MM |
62 | #endif |
63 | ||
8bb8aefd | 64 | #define ORANGEFS_BUFMAP_WAIT_TIMEOUT_SECS 30 |
f7ab093f | 65 | |
8bb8aefd | 66 | #define ORANGEFS_DEFAULT_SLOT_TIMEOUT_SECS 900 /* 15 minutes */ |
f7ab093f | 67 | |
8bb8aefd | 68 | #define ORANGEFS_REQDEVICE_NAME "pvfs2-req" |
f7ab093f | 69 | |
8bb8aefd YL |
70 | #define ORANGEFS_DEVREQ_MAGIC 0x20030529 |
71 | #define ORANGEFS_LINK_MAX 0x000000FF | |
72 | #define ORANGEFS_PURGE_RETRY_COUNT 0x00000005 | |
8bb8aefd YL |
73 | #define ORANGEFS_MAX_NUM_OPTIONS 0x00000004 |
74 | #define ORANGEFS_MAX_MOUNT_OPT_LEN 0x00000080 | |
75 | #define ORANGEFS_MAX_FSKEY_LEN 64 | |
f7ab093f | 76 | |
cf0c2771 | 77 | #define MAX_DEV_REQ_UPSIZE (2 * sizeof(__s32) + \ |
8bb8aefd | 78 | sizeof(__u64) + sizeof(struct orangefs_upcall_s)) |
cf0c2771 | 79 | #define MAX_DEV_REQ_DOWNSIZE (2 * sizeof(__s32) + \ |
8bb8aefd | 80 | sizeof(__u64) + sizeof(struct orangefs_downcall_s)) |
f7ab093f | 81 | |
f7ab093f | 82 | /* |
8bb8aefd | 83 | * valid orangefs kernel operation states |
f7ab093f MM |
84 | * |
85 | * unknown - op was just initialized | |
86 | * waiting - op is on request_list (upward bound) | |
87 | * inprogr - op is in progress (waiting for downcall) | |
88 | * serviced - op has matching downcall; ok | |
89 | * purged - op has to start a timer since client-core | |
90 | * exited uncleanly before servicing op | |
ed42fe05 | 91 | * given up - submitter has given up waiting for it |
f7ab093f | 92 | */ |
8bb8aefd | 93 | enum orangefs_vfs_op_states { |
f7ab093f MM |
94 | OP_VFS_STATE_UNKNOWN = 0, |
95 | OP_VFS_STATE_WAITING = 1, | |
96 | OP_VFS_STATE_INPROGR = 2, | |
97 | OP_VFS_STATE_SERVICED = 4, | |
98 | OP_VFS_STATE_PURGED = 8, | |
ed42fe05 | 99 | OP_VFS_STATE_GIVEN_UP = 16, |
f7ab093f MM |
100 | }; |
101 | ||
f7ab093f | 102 | /* |
8bb8aefd | 103 | * orangefs kernel memory related flags |
f7ab093f MM |
104 | */ |
105 | ||
8bb8aefd YL |
106 | #if ((defined ORANGEFS_KERNEL_DEBUG) && (defined CONFIG_DEBUG_SLAB)) |
107 | #define ORANGEFS_CACHE_CREATE_FLAGS SLAB_RED_ZONE | |
f7ab093f | 108 | #else |
8bb8aefd YL |
109 | #define ORANGEFS_CACHE_CREATE_FLAGS 0 |
110 | #endif /* ((defined ORANGEFS_KERNEL_DEBUG) && (defined CONFIG_DEBUG_SLAB)) */ | |
f7ab093f | 111 | |
8bb8aefd YL |
112 | extern int orangefs_init_acl(struct inode *inode, struct inode *dir); |
113 | extern const struct xattr_handler *orangefs_xattr_handlers[]; | |
f7ab093f | 114 | |
8bb8aefd YL |
115 | extern struct posix_acl *orangefs_get_acl(struct inode *inode, int type); |
116 | extern int orangefs_set_acl(struct inode *inode, struct posix_acl *acl, int type); | |
f7ab093f | 117 | |
f7ab093f MM |
118 | /* |
119 | * Redefine xtvec structure so that we could move helper functions out of | |
120 | * the define | |
121 | */ | |
122 | struct xtvec { | |
123 | __kernel_off_t xtv_off; /* must be off_t */ | |
124 | __kernel_size_t xtv_len; /* must be size_t */ | |
125 | }; | |
126 | ||
127 | /* | |
8bb8aefd | 128 | * orangefs data structures |
f7ab093f | 129 | */ |
8bb8aefd YL |
130 | struct orangefs_kernel_op_s { |
131 | enum orangefs_vfs_op_states op_state; | |
f7ab093f MM |
132 | __u64 tag; |
133 | ||
134 | /* | |
d37c0f30 MM |
135 | * Set uses_shared_memory to non zero if this operation uses |
136 | * shared memory. If true, then a retry on the op must also | |
137 | * get a new shared memory buffer and re-populate it. | |
138 | * Cancels don't care - it only matters for service_operation() | |
139 | * retry logics and cancels don't go through it anymore. It | |
140 | * safely stays non-zero when we use it as slot_to_free. | |
f7ab093f | 141 | */ |
78699e29 AV |
142 | union { |
143 | int uses_shared_memory; | |
144 | int slot_to_free; | |
145 | }; | |
f7ab093f | 146 | |
8bb8aefd YL |
147 | struct orangefs_upcall_s upcall; |
148 | struct orangefs_downcall_s downcall; | |
f7ab093f | 149 | |
d2d87a3b | 150 | struct completion waitq; |
f7ab093f MM |
151 | spinlock_t lock; |
152 | ||
f7ab093f MM |
153 | int attempts; |
154 | ||
155 | struct list_head list; | |
156 | }; | |
157 | ||
60831949 AV |
158 | #define set_op_state_waiting(op) ((op)->op_state = OP_VFS_STATE_WAITING) |
159 | #define set_op_state_inprogress(op) ((op)->op_state = OP_VFS_STATE_INPROGR) | |
2d4cae0d | 160 | #define set_op_state_given_up(op) ((op)->op_state = OP_VFS_STATE_GIVEN_UP) |
60831949 AV |
161 | static inline void set_op_state_serviced(struct orangefs_kernel_op_s *op) |
162 | { | |
163 | op->op_state = OP_VFS_STATE_SERVICED; | |
d2d87a3b | 164 | complete(&op->waitq); |
60831949 | 165 | } |
60831949 AV |
166 | |
167 | #define op_state_waiting(op) ((op)->op_state & OP_VFS_STATE_WAITING) | |
168 | #define op_state_in_progress(op) ((op)->op_state & OP_VFS_STATE_INPROGR) | |
169 | #define op_state_serviced(op) ((op)->op_state & OP_VFS_STATE_SERVICED) | |
170 | #define op_state_purged(op) ((op)->op_state & OP_VFS_STATE_PURGED) | |
ed42fe05 | 171 | #define op_state_given_up(op) ((op)->op_state & OP_VFS_STATE_GIVEN_UP) |
78699e29 | 172 | #define op_is_cancel(op) ((op)->upcall.type == ORANGEFS_VFS_OP_CANCEL) |
ed42fe05 | 173 | |
c1223ca4 | 174 | void op_release(struct orangefs_kernel_op_s *op); |
60831949 | 175 | |
78699e29 AV |
176 | extern void orangefs_bufmap_put(int); |
177 | static inline void put_cancel(struct orangefs_kernel_op_s *op) | |
178 | { | |
179 | orangefs_bufmap_put(op->slot_to_free); | |
180 | op_release(op); | |
181 | } | |
182 | ||
183 | static inline void set_op_state_purged(struct orangefs_kernel_op_s *op) | |
184 | { | |
185 | spin_lock(&op->lock); | |
186 | if (unlikely(op_is_cancel(op))) { | |
05a50a5b | 187 | list_del_init(&op->list); |
78699e29 AV |
188 | spin_unlock(&op->lock); |
189 | put_cancel(op); | |
190 | } else { | |
191 | op->op_state |= OP_VFS_STATE_PURGED; | |
d2d87a3b | 192 | complete(&op->waitq); |
78699e29 AV |
193 | spin_unlock(&op->lock); |
194 | } | |
195 | } | |
196 | ||
8bb8aefd YL |
197 | /* per inode private orangefs info */ |
198 | struct orangefs_inode_s { | |
199 | struct orangefs_object_kref refn; | |
200 | char link_target[ORANGEFS_NAME_MAX]; | |
f7ab093f MM |
201 | __s64 blksize; |
202 | /* | |
203 | * Reading/Writing Extended attributes need to acquire the appropriate | |
8bb8aefd | 204 | * reader/writer semaphore on the orangefs_inode_s structure. |
f7ab093f MM |
205 | */ |
206 | struct rw_semaphore xattr_sem; | |
207 | ||
208 | struct inode vfs_inode; | |
209 | sector_t last_failed_block_index_read; | |
210 | ||
211 | /* | |
212 | * State of in-memory attributes not yet flushed to disk associated | |
213 | * with this object | |
214 | */ | |
215 | unsigned long pinode_flags; | |
71680c18 MB |
216 | |
217 | unsigned long getattr_time; | |
f7ab093f MM |
218 | }; |
219 | ||
220 | #define P_ATIME_FLAG 0 | |
221 | #define P_MTIME_FLAG 1 | |
222 | #define P_CTIME_FLAG 2 | |
223 | #define P_MODE_FLAG 3 | |
224 | ||
225 | #define ClearAtimeFlag(pinode) clear_bit(P_ATIME_FLAG, &(pinode)->pinode_flags) | |
226 | #define SetAtimeFlag(pinode) set_bit(P_ATIME_FLAG, &(pinode)->pinode_flags) | |
227 | #define AtimeFlag(pinode) test_bit(P_ATIME_FLAG, &(pinode)->pinode_flags) | |
228 | ||
229 | #define ClearMtimeFlag(pinode) clear_bit(P_MTIME_FLAG, &(pinode)->pinode_flags) | |
230 | #define SetMtimeFlag(pinode) set_bit(P_MTIME_FLAG, &(pinode)->pinode_flags) | |
231 | #define MtimeFlag(pinode) test_bit(P_MTIME_FLAG, &(pinode)->pinode_flags) | |
232 | ||
233 | #define ClearCtimeFlag(pinode) clear_bit(P_CTIME_FLAG, &(pinode)->pinode_flags) | |
234 | #define SetCtimeFlag(pinode) set_bit(P_CTIME_FLAG, &(pinode)->pinode_flags) | |
235 | #define CtimeFlag(pinode) test_bit(P_CTIME_FLAG, &(pinode)->pinode_flags) | |
236 | ||
237 | #define ClearModeFlag(pinode) clear_bit(P_MODE_FLAG, &(pinode)->pinode_flags) | |
238 | #define SetModeFlag(pinode) set_bit(P_MODE_FLAG, &(pinode)->pinode_flags) | |
239 | #define ModeFlag(pinode) test_bit(P_MODE_FLAG, &(pinode)->pinode_flags) | |
240 | ||
8bb8aefd YL |
241 | /* per superblock private orangefs info */ |
242 | struct orangefs_sb_info_s { | |
243 | struct orangefs_khandle root_khandle; | |
f7ab093f MM |
244 | __s32 fs_id; |
245 | int id; | |
246 | int flags; | |
8bb8aefd YL |
247 | #define ORANGEFS_OPT_INTR 0x01 |
248 | #define ORANGEFS_OPT_LOCAL_LOCK 0x02 | |
249 | char devname[ORANGEFS_MAX_SERVER_ADDR_LEN]; | |
f7ab093f MM |
250 | struct super_block *sb; |
251 | int mount_pending; | |
252 | struct list_head list; | |
253 | }; | |
254 | ||
f7ab093f MM |
255 | /* |
256 | * structure that holds the state of any async I/O operation issued | |
257 | * through the VFS. Needed especially to handle cancellation requests | |
258 | * or even completion notification so that the VFS client-side daemon | |
259 | * can free up its vfs_request slots. | |
260 | */ | |
8bb8aefd | 261 | struct orangefs_kiocb_s { |
f7ab093f MM |
262 | /* the pointer to the task that initiated the AIO */ |
263 | struct task_struct *tsk; | |
264 | ||
265 | /* pointer to the kiocb that kicked this operation */ | |
266 | struct kiocb *kiocb; | |
267 | ||
268 | /* buffer index that was used for the I/O */ | |
8bb8aefd | 269 | struct orangefs_bufmap *bufmap; |
f7ab093f MM |
270 | int buffer_index; |
271 | ||
8bb8aefd YL |
272 | /* orangefs kernel operation type */ |
273 | struct orangefs_kernel_op_s *op; | |
f7ab093f MM |
274 | |
275 | /* The user space buffers from/to which I/O is being staged */ | |
276 | struct iovec *iov; | |
277 | ||
278 | /* number of elements in the iovector */ | |
279 | unsigned long nr_segs; | |
280 | ||
281 | /* set to indicate the type of the operation */ | |
282 | int rw; | |
283 | ||
284 | /* file offset */ | |
285 | loff_t offset; | |
286 | ||
287 | /* and the count in bytes */ | |
288 | size_t bytes_to_be_copied; | |
289 | ||
290 | ssize_t bytes_copied; | |
291 | int needs_cleanup; | |
292 | }; | |
293 | ||
8bb8aefd | 294 | struct orangefs_stats { |
f7ab093f MM |
295 | unsigned long cache_hits; |
296 | unsigned long cache_misses; | |
297 | unsigned long reads; | |
298 | unsigned long writes; | |
299 | }; | |
300 | ||
889d5f1b | 301 | extern struct orangefs_stats orangefs_stats; |
f7ab093f MM |
302 | |
303 | /* | |
54804949 MM |
304 | * NOTE: See Documentation/filesystems/porting for information |
305 | * on implementing FOO_I and properly accessing fs private data | |
306 | */ | |
8bb8aefd | 307 | static inline struct orangefs_inode_s *ORANGEFS_I(struct inode *inode) |
f7ab093f | 308 | { |
8bb8aefd | 309 | return container_of(inode, struct orangefs_inode_s, vfs_inode); |
f7ab093f MM |
310 | } |
311 | ||
8bb8aefd | 312 | static inline struct orangefs_sb_info_s *ORANGEFS_SB(struct super_block *sb) |
f7ab093f | 313 | { |
8bb8aefd | 314 | return (struct orangefs_sb_info_s *) sb->s_fs_info; |
f7ab093f MM |
315 | } |
316 | ||
317 | /* ino_t descends from "unsigned long", 8 bytes, 64 bits. */ | |
8bb8aefd | 318 | static inline ino_t orangefs_khandle_to_ino(struct orangefs_khandle *khandle) |
f7ab093f MM |
319 | { |
320 | union { | |
321 | unsigned char u[8]; | |
322 | __u64 ino; | |
323 | } ihandle; | |
324 | ||
325 | ihandle.u[0] = khandle->u[0] ^ khandle->u[4]; | |
326 | ihandle.u[1] = khandle->u[1] ^ khandle->u[5]; | |
327 | ihandle.u[2] = khandle->u[2] ^ khandle->u[6]; | |
328 | ihandle.u[3] = khandle->u[3] ^ khandle->u[7]; | |
329 | ihandle.u[4] = khandle->u[12] ^ khandle->u[8]; | |
330 | ihandle.u[5] = khandle->u[13] ^ khandle->u[9]; | |
331 | ihandle.u[6] = khandle->u[14] ^ khandle->u[10]; | |
332 | ihandle.u[7] = khandle->u[15] ^ khandle->u[11]; | |
333 | ||
334 | return ihandle.ino; | |
335 | } | |
336 | ||
8bb8aefd | 337 | static inline struct orangefs_khandle *get_khandle_from_ino(struct inode *inode) |
f7ab093f | 338 | { |
8bb8aefd | 339 | return &(ORANGEFS_I(inode)->refn.khandle); |
f7ab093f MM |
340 | } |
341 | ||
342 | static inline __s32 get_fsid_from_ino(struct inode *inode) | |
343 | { | |
8bb8aefd | 344 | return ORANGEFS_I(inode)->refn.fs_id; |
f7ab093f MM |
345 | } |
346 | ||
347 | static inline ino_t get_ino_from_khandle(struct inode *inode) | |
348 | { | |
8bb8aefd | 349 | struct orangefs_khandle *khandle; |
f7ab093f MM |
350 | ino_t ino; |
351 | ||
352 | khandle = get_khandle_from_ino(inode); | |
8bb8aefd | 353 | ino = orangefs_khandle_to_ino(khandle); |
f7ab093f MM |
354 | return ino; |
355 | } | |
356 | ||
357 | static inline ino_t get_parent_ino_from_dentry(struct dentry *dentry) | |
358 | { | |
359 | return get_ino_from_khandle(dentry->d_parent->d_inode); | |
360 | } | |
361 | ||
362 | static inline int is_root_handle(struct inode *inode) | |
363 | { | |
364 | gossip_debug(GOSSIP_DCACHE_DEBUG, | |
365 | "%s: root handle: %pU, this handle: %pU:\n", | |
366 | __func__, | |
8bb8aefd | 367 | &ORANGEFS_SB(inode->i_sb)->root_khandle, |
f7ab093f MM |
368 | get_khandle_from_ino(inode)); |
369 | ||
8bb8aefd | 370 | if (ORANGEFS_khandle_cmp(&(ORANGEFS_SB(inode->i_sb)->root_khandle), |
f7ab093f MM |
371 | get_khandle_from_ino(inode))) |
372 | return 0; | |
373 | else | |
374 | return 1; | |
375 | } | |
376 | ||
8bb8aefd | 377 | static inline int match_handle(struct orangefs_khandle resp_handle, |
f7ab093f MM |
378 | struct inode *inode) |
379 | { | |
380 | gossip_debug(GOSSIP_DCACHE_DEBUG, | |
381 | "%s: one handle: %pU, another handle:%pU:\n", | |
382 | __func__, | |
383 | &resp_handle, | |
384 | get_khandle_from_ino(inode)); | |
385 | ||
8bb8aefd | 386 | if (ORANGEFS_khandle_cmp(&resp_handle, get_khandle_from_ino(inode))) |
f7ab093f MM |
387 | return 0; |
388 | else | |
389 | return 1; | |
390 | } | |
391 | ||
392 | /* | |
8bb8aefd | 393 | * defined in orangefs-cache.c |
f7ab093f MM |
394 | */ |
395 | int op_cache_initialize(void); | |
396 | int op_cache_finalize(void); | |
8bb8aefd | 397 | struct orangefs_kernel_op_s *op_alloc(__s32 type); |
78699e29 | 398 | void orangefs_new_tag(struct orangefs_kernel_op_s *op); |
8bb8aefd | 399 | char *get_opname_string(struct orangefs_kernel_op_s *new_op); |
f7ab093f | 400 | |
8bb8aefd YL |
401 | int orangefs_inode_cache_initialize(void); |
402 | int orangefs_inode_cache_finalize(void); | |
f7ab093f | 403 | |
f7ab093f | 404 | /* |
8bb8aefd | 405 | * defined in orangefs-mod.c |
f7ab093f MM |
406 | */ |
407 | void purge_inprogress_ops(void); | |
408 | ||
409 | /* | |
410 | * defined in waitqueue.c | |
411 | */ | |
f7ab093f MM |
412 | void purge_waiting_ops(void); |
413 | ||
414 | /* | |
415 | * defined in super.c | |
416 | */ | |
482664dd MB |
417 | extern uint64_t orangefs_features; |
418 | ||
8bb8aefd | 419 | struct dentry *orangefs_mount(struct file_system_type *fst, |
f7ab093f MM |
420 | int flags, |
421 | const char *devname, | |
422 | void *data); | |
423 | ||
8bb8aefd | 424 | void orangefs_kill_sb(struct super_block *sb); |
45996492 | 425 | int orangefs_remount(struct orangefs_sb_info_s *); |
f7ab093f MM |
426 | |
427 | int fsid_key_table_initialize(void); | |
428 | void fsid_key_table_finalize(void); | |
429 | ||
430 | /* | |
431 | * defined in inode.c | |
432 | */ | |
8bb8aefd YL |
433 | __u32 convert_to_orangefs_mask(unsigned long lite_mask); |
434 | struct inode *orangefs_new_inode(struct super_block *sb, | |
f7ab093f MM |
435 | struct inode *dir, |
436 | int mode, | |
437 | dev_t dev, | |
8bb8aefd | 438 | struct orangefs_object_kref *ref); |
f7ab093f | 439 | |
8bb8aefd | 440 | int orangefs_setattr(struct dentry *dentry, struct iattr *iattr); |
f7ab093f | 441 | |
8bb8aefd | 442 | int orangefs_getattr(struct vfsmount *mnt, |
f7ab093f MM |
443 | struct dentry *dentry, |
444 | struct kstat *kstat); | |
445 | ||
933287da MB |
446 | int orangefs_permission(struct inode *inode, int mask); |
447 | ||
f7ab093f MM |
448 | /* |
449 | * defined in xattr.c | |
450 | */ | |
8bb8aefd | 451 | int orangefs_setxattr(struct dentry *dentry, |
f7ab093f MM |
452 | const char *name, |
453 | const void *value, | |
454 | size_t size, | |
455 | int flags); | |
456 | ||
8bb8aefd | 457 | ssize_t orangefs_getxattr(struct dentry *dentry, |
f7ab093f MM |
458 | const char *name, |
459 | void *buffer, | |
460 | size_t size); | |
461 | ||
8bb8aefd | 462 | ssize_t orangefs_listxattr(struct dentry *dentry, char *buffer, size_t size); |
f7ab093f MM |
463 | |
464 | /* | |
465 | * defined in namei.c | |
466 | */ | |
8bb8aefd YL |
467 | struct inode *orangefs_iget(struct super_block *sb, |
468 | struct orangefs_object_kref *ref); | |
f7ab093f | 469 | |
8bb8aefd YL |
470 | ssize_t orangefs_inode_read(struct inode *inode, |
471 | struct iov_iter *iter, | |
472 | loff_t *offset, | |
473 | loff_t readahead_size); | |
f7ab093f MM |
474 | |
475 | /* | |
8bb8aefd | 476 | * defined in devorangefs-req.c |
f7ab093f | 477 | */ |
482664dd | 478 | extern uint32_t orangefs_userspace_version; |
f2ee3b75 | 479 | |
8bb8aefd YL |
480 | int orangefs_dev_init(void); |
481 | void orangefs_dev_cleanup(void); | |
f7ab093f | 482 | int is_daemon_in_service(void); |
78699e29 | 483 | bool __is_daemon_in_service(void); |
f7ab093f MM |
484 | |
485 | /* | |
8bb8aefd | 486 | * defined in orangefs-utils.c |
f7ab093f | 487 | */ |
8bb8aefd | 488 | __s32 fsid_of_op(struct orangefs_kernel_op_s *op); |
f7ab093f | 489 | |
8bb8aefd | 490 | int orangefs_flush_inode(struct inode *inode); |
f7ab093f | 491 | |
8bb8aefd | 492 | ssize_t orangefs_inode_getxattr(struct inode *inode, |
f7ab093f MM |
493 | const char *name, |
494 | void *buffer, | |
495 | size_t size); | |
496 | ||
8bb8aefd | 497 | int orangefs_inode_setxattr(struct inode *inode, |
f7ab093f MM |
498 | const char *name, |
499 | const void *value, | |
500 | size_t size, | |
501 | int flags); | |
502 | ||
71680c18 | 503 | int orangefs_inode_getattr(struct inode *inode, int new, int bypass); |
f7ab093f | 504 | |
5859d77e MB |
505 | int orangefs_inode_check_changed(struct inode *inode); |
506 | ||
8bb8aefd | 507 | int orangefs_inode_setattr(struct inode *inode, struct iattr *iattr); |
f7ab093f | 508 | |
8bb8aefd | 509 | void orangefs_make_bad_inode(struct inode *inode); |
f7ab093f | 510 | |
8bb8aefd | 511 | int orangefs_unmount_sb(struct super_block *sb); |
f7ab093f | 512 | |
78699e29 | 513 | bool orangefs_cancel_op_in_progress(struct orangefs_kernel_op_s *op); |
f7ab093f | 514 | |
8bb8aefd | 515 | int orangefs_normalize_to_errno(__s32 error_code); |
f7ab093f | 516 | |
1d503617 | 517 | extern struct mutex orangefs_request_mutex; |
f7ab093f MM |
518 | extern int op_timeout_secs; |
519 | extern int slot_timeout_secs; | |
1d503617 MB |
520 | extern int orangefs_dcache_timeout_msecs; |
521 | extern int orangefs_getattr_timeout_msecs; | |
8bb8aefd YL |
522 | extern struct list_head orangefs_superblocks; |
523 | extern spinlock_t orangefs_superblocks_lock; | |
524 | extern struct list_head orangefs_request_list; | |
525 | extern spinlock_t orangefs_request_list_lock; | |
526 | extern wait_queue_head_t orangefs_request_list_waitq; | |
1d503617 MB |
527 | extern struct list_head *orangefs_htable_ops_in_progress; |
528 | extern spinlock_t orangefs_htable_ops_in_progress_lock; | |
f7ab093f MM |
529 | extern int hash_table_size; |
530 | ||
8bb8aefd YL |
531 | extern const struct address_space_operations orangefs_address_operations; |
532 | extern struct backing_dev_info orangefs_backing_dev_info; | |
6f3fc107 | 533 | extern const struct inode_operations orangefs_file_inode_operations; |
8bb8aefd | 534 | extern const struct file_operations orangefs_file_operations; |
6f3fc107 AV |
535 | extern const struct inode_operations orangefs_symlink_inode_operations; |
536 | extern const struct inode_operations orangefs_dir_inode_operations; | |
8bb8aefd YL |
537 | extern const struct file_operations orangefs_dir_operations; |
538 | extern const struct dentry_operations orangefs_dentry_operations; | |
539 | extern const struct file_operations orangefs_devreq_file_operations; | |
f7ab093f | 540 | |
8bb8aefd | 541 | extern wait_queue_head_t orangefs_bufmap_init_waitq; |
f7ab093f MM |
542 | |
543 | /* | |
544 | * misc convenience macros | |
545 | */ | |
f7ab093f | 546 | |
8bb8aefd YL |
547 | #define ORANGEFS_OP_INTERRUPTIBLE 1 /* service_operation() is interruptible */ |
548 | #define ORANGEFS_OP_PRIORITY 2 /* service_operation() is high priority */ | |
549 | #define ORANGEFS_OP_CANCELLATION 4 /* this is a cancellation */ | |
adcf34a2 | 550 | #define ORANGEFS_OP_NO_MUTEX 8 /* don't acquire request_mutex */ |
8bb8aefd | 551 | #define ORANGEFS_OP_ASYNC 16 /* Queue it, but don't wait */ |
f7ab093f | 552 | |
8bb8aefd | 553 | int service_operation(struct orangefs_kernel_op_s *op, |
f7ab093f MM |
554 | const char *op_name, |
555 | int flags); | |
556 | ||
f7ab093f | 557 | #define get_interruptible_flag(inode) \ |
8bb8aefd YL |
558 | ((ORANGEFS_SB(inode->i_sb)->flags & ORANGEFS_OPT_INTR) ? \ |
559 | ORANGEFS_OP_INTERRUPTIBLE : 0) | |
f7ab093f | 560 | |
f7ab093f MM |
561 | #define fill_default_sys_attrs(sys_attr, type, mode) \ |
562 | do { \ | |
78fee0b6 JH |
563 | sys_attr.owner = from_kuid(&init_user_ns, current_fsuid()); \ |
564 | sys_attr.group = from_kgid(&init_user_ns, current_fsgid()); \ | |
8bb8aefd | 565 | sys_attr.perms = ORANGEFS_util_translate_mode(mode); \ |
69a23de2 MB |
566 | sys_attr.mtime = 0; \ |
567 | sys_attr.atime = 0; \ | |
568 | sys_attr.ctime = 0; \ | |
8bb8aefd | 569 | sys_attr.mask = ORANGEFS_ATTR_SYS_ALL_SETABLE; \ |
f7ab093f MM |
570 | } while (0) |
571 | ||
8bb8aefd | 572 | static inline void orangefs_i_size_write(struct inode *inode, loff_t i_size) |
f7ab093f MM |
573 | { |
574 | #if BITS_PER_LONG == 32 && defined(CONFIG_SMP) | |
5ecfcb26 | 575 | inode_lock(inode); |
f7ab093f MM |
576 | #endif |
577 | i_size_write(inode, i_size); | |
578 | #if BITS_PER_LONG == 32 && defined(CONFIG_SMP) | |
5ecfcb26 | 579 | inode_unlock(inode); |
f7ab093f MM |
580 | #endif |
581 | } | |
582 | ||
804b1737 MS |
583 | static inline void orangefs_set_timeout(struct dentry *dentry) |
584 | { | |
585 | unsigned long time = jiffies + orangefs_dcache_timeout_msecs*HZ/1000; | |
586 | ||
587 | dentry->d_fsdata = (void *) time; | |
588 | } | |
589 | ||
8bb8aefd | 590 | #endif /* __ORANGEFSKERNEL_H */ |