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 MM |
102 | /* |
103 | * An array of client_debug_mask will be built to hold debug keyword/mask | |
104 | * values fetched from userspace. | |
105 | */ | |
106 | struct client_debug_mask { | |
107 | char *keyword; | |
108 | __u64 mask1; | |
109 | __u64 mask2; | |
110 | }; | |
111 | ||
112 | /* | |
8bb8aefd | 113 | * orangefs kernel memory related flags |
f7ab093f MM |
114 | */ |
115 | ||
8bb8aefd YL |
116 | #if ((defined ORANGEFS_KERNEL_DEBUG) && (defined CONFIG_DEBUG_SLAB)) |
117 | #define ORANGEFS_CACHE_CREATE_FLAGS SLAB_RED_ZONE | |
f7ab093f | 118 | #else |
8bb8aefd YL |
119 | #define ORANGEFS_CACHE_CREATE_FLAGS 0 |
120 | #endif /* ((defined ORANGEFS_KERNEL_DEBUG) && (defined CONFIG_DEBUG_SLAB)) */ | |
f7ab093f | 121 | |
8bb8aefd | 122 | /* these functions are defined in orangefs-utils.c */ |
f7ab093f MM |
123 | int orangefs_prepare_cdm_array(char *debug_array_string); |
124 | int orangefs_prepare_debugfs_help_string(int); | |
125 | ||
8bb8aefd YL |
126 | /* defined in orangefs-debugfs.c */ |
127 | int orangefs_client_debug_init(void); | |
f7ab093f MM |
128 | |
129 | void debug_string_to_mask(char *, void *, int); | |
130 | void do_c_mask(int, char *, struct client_debug_mask **); | |
131 | void do_k_mask(int, char *, __u64 **); | |
132 | ||
133 | void debug_mask_to_string(void *, int); | |
134 | void do_k_string(void *, int); | |
135 | void do_c_string(void *, int); | |
136 | int check_amalgam_keyword(void *, int); | |
137 | int keyword_is_amalgam(char *); | |
138 | ||
8bb8aefd YL |
139 | /*these variables are defined in orangefs-mod.c */ |
140 | extern char kernel_debug_string[ORANGEFS_MAX_DEBUG_STRING_LEN]; | |
141 | extern char client_debug_string[ORANGEFS_MAX_DEBUG_STRING_LEN]; | |
142 | extern char client_debug_array_string[ORANGEFS_MAX_DEBUG_STRING_LEN]; | |
f7ab093f MM |
143 | extern unsigned int kernel_mask_set_mod_init; |
144 | ||
8bb8aefd YL |
145 | extern int orangefs_init_acl(struct inode *inode, struct inode *dir); |
146 | extern const struct xattr_handler *orangefs_xattr_handlers[]; | |
f7ab093f | 147 | |
8bb8aefd YL |
148 | extern struct posix_acl *orangefs_get_acl(struct inode *inode, int type); |
149 | extern int orangefs_set_acl(struct inode *inode, struct posix_acl *acl, int type); | |
f7ab093f | 150 | |
f7ab093f MM |
151 | /* |
152 | * Redefine xtvec structure so that we could move helper functions out of | |
153 | * the define | |
154 | */ | |
155 | struct xtvec { | |
156 | __kernel_off_t xtv_off; /* must be off_t */ | |
157 | __kernel_size_t xtv_len; /* must be size_t */ | |
158 | }; | |
159 | ||
160 | /* | |
8bb8aefd | 161 | * orangefs data structures |
f7ab093f | 162 | */ |
8bb8aefd YL |
163 | struct orangefs_kernel_op_s { |
164 | enum orangefs_vfs_op_states op_state; | |
f7ab093f MM |
165 | __u64 tag; |
166 | ||
167 | /* | |
d37c0f30 MM |
168 | * Set uses_shared_memory to non zero if this operation uses |
169 | * shared memory. If true, then a retry on the op must also | |
170 | * get a new shared memory buffer and re-populate it. | |
171 | * Cancels don't care - it only matters for service_operation() | |
172 | * retry logics and cancels don't go through it anymore. It | |
173 | * safely stays non-zero when we use it as slot_to_free. | |
f7ab093f | 174 | */ |
78699e29 AV |
175 | union { |
176 | int uses_shared_memory; | |
177 | int slot_to_free; | |
178 | }; | |
f7ab093f | 179 | |
8bb8aefd YL |
180 | struct orangefs_upcall_s upcall; |
181 | struct orangefs_downcall_s downcall; | |
f7ab093f | 182 | |
d2d87a3b | 183 | struct completion waitq; |
f7ab093f MM |
184 | spinlock_t lock; |
185 | ||
f7ab093f MM |
186 | int attempts; |
187 | ||
188 | struct list_head list; | |
189 | }; | |
190 | ||
60831949 AV |
191 | #define set_op_state_waiting(op) ((op)->op_state = OP_VFS_STATE_WAITING) |
192 | #define set_op_state_inprogress(op) ((op)->op_state = OP_VFS_STATE_INPROGR) | |
2d4cae0d | 193 | #define set_op_state_given_up(op) ((op)->op_state = OP_VFS_STATE_GIVEN_UP) |
60831949 AV |
194 | static inline void set_op_state_serviced(struct orangefs_kernel_op_s *op) |
195 | { | |
196 | op->op_state = OP_VFS_STATE_SERVICED; | |
d2d87a3b | 197 | complete(&op->waitq); |
60831949 | 198 | } |
60831949 AV |
199 | |
200 | #define op_state_waiting(op) ((op)->op_state & OP_VFS_STATE_WAITING) | |
201 | #define op_state_in_progress(op) ((op)->op_state & OP_VFS_STATE_INPROGR) | |
202 | #define op_state_serviced(op) ((op)->op_state & OP_VFS_STATE_SERVICED) | |
203 | #define op_state_purged(op) ((op)->op_state & OP_VFS_STATE_PURGED) | |
ed42fe05 | 204 | #define op_state_given_up(op) ((op)->op_state & OP_VFS_STATE_GIVEN_UP) |
78699e29 | 205 | #define op_is_cancel(op) ((op)->upcall.type == ORANGEFS_VFS_OP_CANCEL) |
ed42fe05 | 206 | |
c1223ca4 | 207 | void op_release(struct orangefs_kernel_op_s *op); |
60831949 | 208 | |
78699e29 AV |
209 | extern void orangefs_bufmap_put(int); |
210 | static inline void put_cancel(struct orangefs_kernel_op_s *op) | |
211 | { | |
212 | orangefs_bufmap_put(op->slot_to_free); | |
213 | op_release(op); | |
214 | } | |
215 | ||
216 | static inline void set_op_state_purged(struct orangefs_kernel_op_s *op) | |
217 | { | |
218 | spin_lock(&op->lock); | |
219 | if (unlikely(op_is_cancel(op))) { | |
05a50a5b | 220 | list_del_init(&op->list); |
78699e29 AV |
221 | spin_unlock(&op->lock); |
222 | put_cancel(op); | |
223 | } else { | |
224 | op->op_state |= OP_VFS_STATE_PURGED; | |
d2d87a3b | 225 | complete(&op->waitq); |
78699e29 AV |
226 | spin_unlock(&op->lock); |
227 | } | |
228 | } | |
229 | ||
8bb8aefd YL |
230 | /* per inode private orangefs info */ |
231 | struct orangefs_inode_s { | |
232 | struct orangefs_object_kref refn; | |
233 | char link_target[ORANGEFS_NAME_MAX]; | |
f7ab093f MM |
234 | __s64 blksize; |
235 | /* | |
236 | * Reading/Writing Extended attributes need to acquire the appropriate | |
8bb8aefd | 237 | * reader/writer semaphore on the orangefs_inode_s structure. |
f7ab093f MM |
238 | */ |
239 | struct rw_semaphore xattr_sem; | |
240 | ||
241 | struct inode vfs_inode; | |
242 | sector_t last_failed_block_index_read; | |
243 | ||
244 | /* | |
245 | * State of in-memory attributes not yet flushed to disk associated | |
246 | * with this object | |
247 | */ | |
248 | unsigned long pinode_flags; | |
f7ab093f MM |
249 | }; |
250 | ||
251 | #define P_ATIME_FLAG 0 | |
252 | #define P_MTIME_FLAG 1 | |
253 | #define P_CTIME_FLAG 2 | |
254 | #define P_MODE_FLAG 3 | |
255 | ||
256 | #define ClearAtimeFlag(pinode) clear_bit(P_ATIME_FLAG, &(pinode)->pinode_flags) | |
257 | #define SetAtimeFlag(pinode) set_bit(P_ATIME_FLAG, &(pinode)->pinode_flags) | |
258 | #define AtimeFlag(pinode) test_bit(P_ATIME_FLAG, &(pinode)->pinode_flags) | |
259 | ||
260 | #define ClearMtimeFlag(pinode) clear_bit(P_MTIME_FLAG, &(pinode)->pinode_flags) | |
261 | #define SetMtimeFlag(pinode) set_bit(P_MTIME_FLAG, &(pinode)->pinode_flags) | |
262 | #define MtimeFlag(pinode) test_bit(P_MTIME_FLAG, &(pinode)->pinode_flags) | |
263 | ||
264 | #define ClearCtimeFlag(pinode) clear_bit(P_CTIME_FLAG, &(pinode)->pinode_flags) | |
265 | #define SetCtimeFlag(pinode) set_bit(P_CTIME_FLAG, &(pinode)->pinode_flags) | |
266 | #define CtimeFlag(pinode) test_bit(P_CTIME_FLAG, &(pinode)->pinode_flags) | |
267 | ||
268 | #define ClearModeFlag(pinode) clear_bit(P_MODE_FLAG, &(pinode)->pinode_flags) | |
269 | #define SetModeFlag(pinode) set_bit(P_MODE_FLAG, &(pinode)->pinode_flags) | |
270 | #define ModeFlag(pinode) test_bit(P_MODE_FLAG, &(pinode)->pinode_flags) | |
271 | ||
8bb8aefd YL |
272 | /* per superblock private orangefs info */ |
273 | struct orangefs_sb_info_s { | |
274 | struct orangefs_khandle root_khandle; | |
f7ab093f MM |
275 | __s32 fs_id; |
276 | int id; | |
277 | int flags; | |
8bb8aefd YL |
278 | #define ORANGEFS_OPT_INTR 0x01 |
279 | #define ORANGEFS_OPT_LOCAL_LOCK 0x02 | |
280 | char devname[ORANGEFS_MAX_SERVER_ADDR_LEN]; | |
f7ab093f MM |
281 | struct super_block *sb; |
282 | int mount_pending; | |
283 | struct list_head list; | |
284 | }; | |
285 | ||
f7ab093f MM |
286 | /* |
287 | * structure that holds the state of any async I/O operation issued | |
288 | * through the VFS. Needed especially to handle cancellation requests | |
289 | * or even completion notification so that the VFS client-side daemon | |
290 | * can free up its vfs_request slots. | |
291 | */ | |
8bb8aefd | 292 | struct orangefs_kiocb_s { |
f7ab093f MM |
293 | /* the pointer to the task that initiated the AIO */ |
294 | struct task_struct *tsk; | |
295 | ||
296 | /* pointer to the kiocb that kicked this operation */ | |
297 | struct kiocb *kiocb; | |
298 | ||
299 | /* buffer index that was used for the I/O */ | |
8bb8aefd | 300 | struct orangefs_bufmap *bufmap; |
f7ab093f MM |
301 | int buffer_index; |
302 | ||
8bb8aefd YL |
303 | /* orangefs kernel operation type */ |
304 | struct orangefs_kernel_op_s *op; | |
f7ab093f MM |
305 | |
306 | /* The user space buffers from/to which I/O is being staged */ | |
307 | struct iovec *iov; | |
308 | ||
309 | /* number of elements in the iovector */ | |
310 | unsigned long nr_segs; | |
311 | ||
312 | /* set to indicate the type of the operation */ | |
313 | int rw; | |
314 | ||
315 | /* file offset */ | |
316 | loff_t offset; | |
317 | ||
318 | /* and the count in bytes */ | |
319 | size_t bytes_to_be_copied; | |
320 | ||
321 | ssize_t bytes_copied; | |
322 | int needs_cleanup; | |
323 | }; | |
324 | ||
8bb8aefd | 325 | struct orangefs_stats { |
f7ab093f MM |
326 | unsigned long cache_hits; |
327 | unsigned long cache_misses; | |
328 | unsigned long reads; | |
329 | unsigned long writes; | |
330 | }; | |
331 | ||
8bb8aefd | 332 | extern struct orangefs_stats g_orangefs_stats; |
f7ab093f MM |
333 | |
334 | /* | |
54804949 MM |
335 | * NOTE: See Documentation/filesystems/porting for information |
336 | * on implementing FOO_I and properly accessing fs private data | |
337 | */ | |
8bb8aefd | 338 | static inline struct orangefs_inode_s *ORANGEFS_I(struct inode *inode) |
f7ab093f | 339 | { |
8bb8aefd | 340 | return container_of(inode, struct orangefs_inode_s, vfs_inode); |
f7ab093f MM |
341 | } |
342 | ||
8bb8aefd | 343 | static inline struct orangefs_sb_info_s *ORANGEFS_SB(struct super_block *sb) |
f7ab093f | 344 | { |
8bb8aefd | 345 | return (struct orangefs_sb_info_s *) sb->s_fs_info; |
f7ab093f MM |
346 | } |
347 | ||
348 | /* ino_t descends from "unsigned long", 8 bytes, 64 bits. */ | |
8bb8aefd | 349 | static inline ino_t orangefs_khandle_to_ino(struct orangefs_khandle *khandle) |
f7ab093f MM |
350 | { |
351 | union { | |
352 | unsigned char u[8]; | |
353 | __u64 ino; | |
354 | } ihandle; | |
355 | ||
356 | ihandle.u[0] = khandle->u[0] ^ khandle->u[4]; | |
357 | ihandle.u[1] = khandle->u[1] ^ khandle->u[5]; | |
358 | ihandle.u[2] = khandle->u[2] ^ khandle->u[6]; | |
359 | ihandle.u[3] = khandle->u[3] ^ khandle->u[7]; | |
360 | ihandle.u[4] = khandle->u[12] ^ khandle->u[8]; | |
361 | ihandle.u[5] = khandle->u[13] ^ khandle->u[9]; | |
362 | ihandle.u[6] = khandle->u[14] ^ khandle->u[10]; | |
363 | ihandle.u[7] = khandle->u[15] ^ khandle->u[11]; | |
364 | ||
365 | return ihandle.ino; | |
366 | } | |
367 | ||
8bb8aefd | 368 | static inline struct orangefs_khandle *get_khandle_from_ino(struct inode *inode) |
f7ab093f | 369 | { |
8bb8aefd | 370 | return &(ORANGEFS_I(inode)->refn.khandle); |
f7ab093f MM |
371 | } |
372 | ||
373 | static inline __s32 get_fsid_from_ino(struct inode *inode) | |
374 | { | |
8bb8aefd | 375 | return ORANGEFS_I(inode)->refn.fs_id; |
f7ab093f MM |
376 | } |
377 | ||
378 | static inline ino_t get_ino_from_khandle(struct inode *inode) | |
379 | { | |
8bb8aefd | 380 | struct orangefs_khandle *khandle; |
f7ab093f MM |
381 | ino_t ino; |
382 | ||
383 | khandle = get_khandle_from_ino(inode); | |
8bb8aefd | 384 | ino = orangefs_khandle_to_ino(khandle); |
f7ab093f MM |
385 | return ino; |
386 | } | |
387 | ||
388 | static inline ino_t get_parent_ino_from_dentry(struct dentry *dentry) | |
389 | { | |
390 | return get_ino_from_khandle(dentry->d_parent->d_inode); | |
391 | } | |
392 | ||
393 | static inline int is_root_handle(struct inode *inode) | |
394 | { | |
395 | gossip_debug(GOSSIP_DCACHE_DEBUG, | |
396 | "%s: root handle: %pU, this handle: %pU:\n", | |
397 | __func__, | |
8bb8aefd | 398 | &ORANGEFS_SB(inode->i_sb)->root_khandle, |
f7ab093f MM |
399 | get_khandle_from_ino(inode)); |
400 | ||
8bb8aefd | 401 | if (ORANGEFS_khandle_cmp(&(ORANGEFS_SB(inode->i_sb)->root_khandle), |
f7ab093f MM |
402 | get_khandle_from_ino(inode))) |
403 | return 0; | |
404 | else | |
405 | return 1; | |
406 | } | |
407 | ||
8bb8aefd | 408 | static inline int match_handle(struct orangefs_khandle resp_handle, |
f7ab093f MM |
409 | struct inode *inode) |
410 | { | |
411 | gossip_debug(GOSSIP_DCACHE_DEBUG, | |
412 | "%s: one handle: %pU, another handle:%pU:\n", | |
413 | __func__, | |
414 | &resp_handle, | |
415 | get_khandle_from_ino(inode)); | |
416 | ||
8bb8aefd | 417 | if (ORANGEFS_khandle_cmp(&resp_handle, get_khandle_from_ino(inode))) |
f7ab093f MM |
418 | return 0; |
419 | else | |
420 | return 1; | |
421 | } | |
422 | ||
423 | /* | |
8bb8aefd | 424 | * defined in orangefs-cache.c |
f7ab093f MM |
425 | */ |
426 | int op_cache_initialize(void); | |
427 | int op_cache_finalize(void); | |
8bb8aefd | 428 | struct orangefs_kernel_op_s *op_alloc(__s32 type); |
78699e29 | 429 | void orangefs_new_tag(struct orangefs_kernel_op_s *op); |
8bb8aefd | 430 | char *get_opname_string(struct orangefs_kernel_op_s *new_op); |
f7ab093f | 431 | |
8bb8aefd YL |
432 | int orangefs_inode_cache_initialize(void); |
433 | int orangefs_inode_cache_finalize(void); | |
f7ab093f | 434 | |
f7ab093f | 435 | /* |
8bb8aefd | 436 | * defined in orangefs-mod.c |
f7ab093f MM |
437 | */ |
438 | void purge_inprogress_ops(void); | |
439 | ||
440 | /* | |
441 | * defined in waitqueue.c | |
442 | */ | |
f7ab093f MM |
443 | void purge_waiting_ops(void); |
444 | ||
445 | /* | |
446 | * defined in super.c | |
447 | */ | |
8bb8aefd | 448 | struct dentry *orangefs_mount(struct file_system_type *fst, |
f7ab093f MM |
449 | int flags, |
450 | const char *devname, | |
451 | void *data); | |
452 | ||
8bb8aefd | 453 | void orangefs_kill_sb(struct super_block *sb); |
45996492 | 454 | int orangefs_remount(struct orangefs_sb_info_s *); |
f7ab093f MM |
455 | |
456 | int fsid_key_table_initialize(void); | |
457 | void fsid_key_table_finalize(void); | |
458 | ||
459 | /* | |
460 | * defined in inode.c | |
461 | */ | |
8bb8aefd YL |
462 | __u32 convert_to_orangefs_mask(unsigned long lite_mask); |
463 | struct inode *orangefs_new_inode(struct super_block *sb, | |
f7ab093f MM |
464 | struct inode *dir, |
465 | int mode, | |
466 | dev_t dev, | |
8bb8aefd | 467 | struct orangefs_object_kref *ref); |
f7ab093f | 468 | |
8bb8aefd | 469 | int orangefs_setattr(struct dentry *dentry, struct iattr *iattr); |
f7ab093f | 470 | |
8bb8aefd | 471 | int orangefs_getattr(struct vfsmount *mnt, |
f7ab093f MM |
472 | struct dentry *dentry, |
473 | struct kstat *kstat); | |
474 | ||
933287da MB |
475 | int orangefs_permission(struct inode *inode, int mask); |
476 | ||
f7ab093f MM |
477 | /* |
478 | * defined in xattr.c | |
479 | */ | |
8bb8aefd | 480 | int orangefs_setxattr(struct dentry *dentry, |
f7ab093f MM |
481 | const char *name, |
482 | const void *value, | |
483 | size_t size, | |
484 | int flags); | |
485 | ||
8bb8aefd | 486 | ssize_t orangefs_getxattr(struct dentry *dentry, |
f7ab093f MM |
487 | const char *name, |
488 | void *buffer, | |
489 | size_t size); | |
490 | ||
8bb8aefd | 491 | ssize_t orangefs_listxattr(struct dentry *dentry, char *buffer, size_t size); |
f7ab093f MM |
492 | |
493 | /* | |
494 | * defined in namei.c | |
495 | */ | |
8bb8aefd YL |
496 | struct inode *orangefs_iget(struct super_block *sb, |
497 | struct orangefs_object_kref *ref); | |
f7ab093f | 498 | |
8bb8aefd YL |
499 | ssize_t orangefs_inode_read(struct inode *inode, |
500 | struct iov_iter *iter, | |
501 | loff_t *offset, | |
502 | loff_t readahead_size); | |
f7ab093f MM |
503 | |
504 | /* | |
8bb8aefd | 505 | * defined in devorangefs-req.c |
f7ab093f | 506 | */ |
8bb8aefd YL |
507 | int orangefs_dev_init(void); |
508 | void orangefs_dev_cleanup(void); | |
f7ab093f | 509 | int is_daemon_in_service(void); |
78699e29 | 510 | bool __is_daemon_in_service(void); |
f7ab093f MM |
511 | |
512 | /* | |
8bb8aefd | 513 | * defined in orangefs-utils.c |
f7ab093f | 514 | */ |
8bb8aefd | 515 | __s32 fsid_of_op(struct orangefs_kernel_op_s *op); |
f7ab093f | 516 | |
8bb8aefd | 517 | int orangefs_flush_inode(struct inode *inode); |
f7ab093f | 518 | |
8bb8aefd | 519 | ssize_t orangefs_inode_getxattr(struct inode *inode, |
f7ab093f MM |
520 | const char *name, |
521 | void *buffer, | |
522 | size_t size); | |
523 | ||
8bb8aefd | 524 | int orangefs_inode_setxattr(struct inode *inode, |
f7ab093f MM |
525 | const char *name, |
526 | const void *value, | |
527 | size_t size, | |
528 | int flags); | |
529 | ||
3c9cf98d | 530 | int orangefs_inode_getattr(struct inode *inode, int new, int size); |
f7ab093f | 531 | |
5859d77e MB |
532 | int orangefs_inode_check_changed(struct inode *inode); |
533 | ||
8bb8aefd | 534 | int orangefs_inode_setattr(struct inode *inode, struct iattr *iattr); |
f7ab093f | 535 | |
8bb8aefd | 536 | void orangefs_make_bad_inode(struct inode *inode); |
f7ab093f | 537 | |
8bb8aefd | 538 | int orangefs_unmount_sb(struct super_block *sb); |
f7ab093f | 539 | |
78699e29 | 540 | bool orangefs_cancel_op_in_progress(struct orangefs_kernel_op_s *op); |
f7ab093f | 541 | |
8bb8aefd | 542 | int orangefs_normalize_to_errno(__s32 error_code); |
f7ab093f MM |
543 | |
544 | extern struct mutex devreq_mutex; | |
545 | extern struct mutex request_mutex; | |
546 | extern int debug; | |
547 | extern int op_timeout_secs; | |
548 | extern int slot_timeout_secs; | |
8bb8aefd YL |
549 | extern struct list_head orangefs_superblocks; |
550 | extern spinlock_t orangefs_superblocks_lock; | |
551 | extern struct list_head orangefs_request_list; | |
552 | extern spinlock_t orangefs_request_list_lock; | |
553 | extern wait_queue_head_t orangefs_request_list_waitq; | |
f7ab093f MM |
554 | extern struct list_head *htable_ops_in_progress; |
555 | extern spinlock_t htable_ops_in_progress_lock; | |
556 | extern int hash_table_size; | |
557 | ||
8bb8aefd YL |
558 | extern const struct address_space_operations orangefs_address_operations; |
559 | extern struct backing_dev_info orangefs_backing_dev_info; | |
560 | extern struct inode_operations orangefs_file_inode_operations; | |
561 | extern const struct file_operations orangefs_file_operations; | |
562 | extern struct inode_operations orangefs_symlink_inode_operations; | |
563 | extern struct inode_operations orangefs_dir_inode_operations; | |
564 | extern const struct file_operations orangefs_dir_operations; | |
565 | extern const struct dentry_operations orangefs_dentry_operations; | |
566 | extern const struct file_operations orangefs_devreq_file_operations; | |
f7ab093f | 567 | |
8bb8aefd | 568 | extern wait_queue_head_t orangefs_bufmap_init_waitq; |
f7ab093f MM |
569 | |
570 | /* | |
571 | * misc convenience macros | |
572 | */ | |
f7ab093f | 573 | |
8bb8aefd YL |
574 | #define ORANGEFS_OP_INTERRUPTIBLE 1 /* service_operation() is interruptible */ |
575 | #define ORANGEFS_OP_PRIORITY 2 /* service_operation() is high priority */ | |
576 | #define ORANGEFS_OP_CANCELLATION 4 /* this is a cancellation */ | |
adcf34a2 | 577 | #define ORANGEFS_OP_NO_MUTEX 8 /* don't acquire request_mutex */ |
8bb8aefd | 578 | #define ORANGEFS_OP_ASYNC 16 /* Queue it, but don't wait */ |
f7ab093f | 579 | |
8bb8aefd | 580 | int service_operation(struct orangefs_kernel_op_s *op, |
f7ab093f MM |
581 | const char *op_name, |
582 | int flags); | |
583 | ||
f7ab093f | 584 | #define get_interruptible_flag(inode) \ |
8bb8aefd YL |
585 | ((ORANGEFS_SB(inode->i_sb)->flags & ORANGEFS_OPT_INTR) ? \ |
586 | ORANGEFS_OP_INTERRUPTIBLE : 0) | |
f7ab093f | 587 | |
f7ab093f MM |
588 | #define fill_default_sys_attrs(sys_attr, type, mode) \ |
589 | do { \ | |
78fee0b6 JH |
590 | sys_attr.owner = from_kuid(&init_user_ns, current_fsuid()); \ |
591 | sys_attr.group = from_kgid(&init_user_ns, current_fsgid()); \ | |
8bb8aefd | 592 | sys_attr.perms = ORANGEFS_util_translate_mode(mode); \ |
69a23de2 MB |
593 | sys_attr.mtime = 0; \ |
594 | sys_attr.atime = 0; \ | |
595 | sys_attr.ctime = 0; \ | |
8bb8aefd | 596 | sys_attr.mask = ORANGEFS_ATTR_SYS_ALL_SETABLE; \ |
f7ab093f MM |
597 | } while (0) |
598 | ||
8bb8aefd | 599 | static inline void orangefs_i_size_write(struct inode *inode, loff_t i_size) |
f7ab093f MM |
600 | { |
601 | #if BITS_PER_LONG == 32 && defined(CONFIG_SMP) | |
5ecfcb26 | 602 | inode_lock(inode); |
f7ab093f MM |
603 | #endif |
604 | i_size_write(inode, i_size); | |
605 | #if BITS_PER_LONG == 32 && defined(CONFIG_SMP) | |
5ecfcb26 | 606 | inode_unlock(inode); |
f7ab093f MM |
607 | #endif |
608 | } | |
609 | ||
8bb8aefd | 610 | #endif /* __ORANGEFSKERNEL_H */ |