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 | |
73 | #define ORANGEFS_SEEK_END 0x00000002 | |
74 | #define ORANGEFS_MAX_NUM_OPTIONS 0x00000004 | |
75 | #define ORANGEFS_MAX_MOUNT_OPT_LEN 0x00000080 | |
76 | #define ORANGEFS_MAX_FSKEY_LEN 64 | |
f7ab093f | 77 | |
cf0c2771 | 78 | #define MAX_DEV_REQ_UPSIZE (2 * sizeof(__s32) + \ |
8bb8aefd | 79 | sizeof(__u64) + sizeof(struct orangefs_upcall_s)) |
cf0c2771 | 80 | #define MAX_DEV_REQ_DOWNSIZE (2 * sizeof(__s32) + \ |
8bb8aefd | 81 | sizeof(__u64) + sizeof(struct orangefs_downcall_s)) |
f7ab093f | 82 | |
f7ab093f | 83 | /* |
8bb8aefd | 84 | * valid orangefs kernel operation states |
f7ab093f MM |
85 | * |
86 | * unknown - op was just initialized | |
87 | * waiting - op is on request_list (upward bound) | |
88 | * inprogr - op is in progress (waiting for downcall) | |
89 | * serviced - op has matching downcall; ok | |
90 | * purged - op has to start a timer since client-core | |
91 | * exited uncleanly before servicing op | |
ed42fe05 | 92 | * given up - submitter has given up waiting for it |
f7ab093f | 93 | */ |
8bb8aefd | 94 | enum orangefs_vfs_op_states { |
f7ab093f MM |
95 | OP_VFS_STATE_UNKNOWN = 0, |
96 | OP_VFS_STATE_WAITING = 1, | |
97 | OP_VFS_STATE_INPROGR = 2, | |
98 | OP_VFS_STATE_SERVICED = 4, | |
99 | OP_VFS_STATE_PURGED = 8, | |
ed42fe05 | 100 | OP_VFS_STATE_GIVEN_UP = 16, |
f7ab093f MM |
101 | }; |
102 | ||
f7ab093f MM |
103 | /* |
104 | * Defines for controlling whether I/O upcalls are for async or sync operations | |
105 | */ | |
8bb8aefd YL |
106 | enum ORANGEFS_async_io_type { |
107 | ORANGEFS_VFS_SYNC_IO = 0, | |
108 | ORANGEFS_VFS_ASYNC_IO = 1, | |
f7ab093f MM |
109 | }; |
110 | ||
111 | /* | |
112 | * An array of client_debug_mask will be built to hold debug keyword/mask | |
113 | * values fetched from userspace. | |
114 | */ | |
115 | struct client_debug_mask { | |
116 | char *keyword; | |
117 | __u64 mask1; | |
118 | __u64 mask2; | |
119 | }; | |
120 | ||
121 | /* | |
8bb8aefd | 122 | * orangefs kernel memory related flags |
f7ab093f MM |
123 | */ |
124 | ||
8bb8aefd YL |
125 | #if ((defined ORANGEFS_KERNEL_DEBUG) && (defined CONFIG_DEBUG_SLAB)) |
126 | #define ORANGEFS_CACHE_CREATE_FLAGS SLAB_RED_ZONE | |
f7ab093f | 127 | #else |
8bb8aefd YL |
128 | #define ORANGEFS_CACHE_CREATE_FLAGS 0 |
129 | #endif /* ((defined ORANGEFS_KERNEL_DEBUG) && (defined CONFIG_DEBUG_SLAB)) */ | |
f7ab093f | 130 | |
8bb8aefd YL |
131 | #define ORANGEFS_CACHE_ALLOC_FLAGS (GFP_KERNEL) |
132 | #define ORANGEFS_GFP_FLAGS (GFP_KERNEL) | |
133 | #define ORANGEFS_BUFMAP_GFP_FLAGS (GFP_KERNEL) | |
f7ab093f | 134 | |
8bb8aefd YL |
135 | /* orangefs xattr and acl related defines */ |
136 | #define ORANGEFS_XATTR_INDEX_POSIX_ACL_ACCESS 1 | |
137 | #define ORANGEFS_XATTR_INDEX_POSIX_ACL_DEFAULT 2 | |
138 | #define ORANGEFS_XATTR_INDEX_TRUSTED 3 | |
139 | #define ORANGEFS_XATTR_INDEX_DEFAULT 4 | |
f7ab093f | 140 | |
fef8b67c MM |
141 | #define ORANGEFS_XATTR_NAME_ACL_ACCESS XATTR_NAME_POSIX_ACL_ACCESS |
142 | #define ORANGEFS_XATTR_NAME_ACL_DEFAULT XATTR_NAME_POSIX_ACL_DEFAULT | |
8bb8aefd YL |
143 | #define ORANGEFS_XATTR_NAME_TRUSTED_PREFIX "trusted." |
144 | #define ORANGEFS_XATTR_NAME_DEFAULT_PREFIX "" | |
f7ab093f | 145 | |
8bb8aefd | 146 | /* these functions are defined in orangefs-utils.c */ |
f7ab093f MM |
147 | int orangefs_prepare_cdm_array(char *debug_array_string); |
148 | int orangefs_prepare_debugfs_help_string(int); | |
149 | ||
8bb8aefd YL |
150 | /* defined in orangefs-debugfs.c */ |
151 | int orangefs_client_debug_init(void); | |
f7ab093f MM |
152 | |
153 | void debug_string_to_mask(char *, void *, int); | |
154 | void do_c_mask(int, char *, struct client_debug_mask **); | |
155 | void do_k_mask(int, char *, __u64 **); | |
156 | ||
157 | void debug_mask_to_string(void *, int); | |
158 | void do_k_string(void *, int); | |
159 | void do_c_string(void *, int); | |
160 | int check_amalgam_keyword(void *, int); | |
161 | int keyword_is_amalgam(char *); | |
162 | ||
8bb8aefd YL |
163 | /*these variables are defined in orangefs-mod.c */ |
164 | extern char kernel_debug_string[ORANGEFS_MAX_DEBUG_STRING_LEN]; | |
165 | extern char client_debug_string[ORANGEFS_MAX_DEBUG_STRING_LEN]; | |
166 | extern char client_debug_array_string[ORANGEFS_MAX_DEBUG_STRING_LEN]; | |
f7ab093f MM |
167 | extern unsigned int kernel_mask_set_mod_init; |
168 | ||
8bb8aefd YL |
169 | extern int orangefs_init_acl(struct inode *inode, struct inode *dir); |
170 | extern const struct xattr_handler *orangefs_xattr_handlers[]; | |
f7ab093f | 171 | |
8bb8aefd YL |
172 | extern struct posix_acl *orangefs_get_acl(struct inode *inode, int type); |
173 | extern int orangefs_set_acl(struct inode *inode, struct posix_acl *acl, int type); | |
f7ab093f | 174 | |
f7ab093f MM |
175 | /* |
176 | * Redefine xtvec structure so that we could move helper functions out of | |
177 | * the define | |
178 | */ | |
179 | struct xtvec { | |
180 | __kernel_off_t xtv_off; /* must be off_t */ | |
181 | __kernel_size_t xtv_len; /* must be size_t */ | |
182 | }; | |
183 | ||
184 | /* | |
8bb8aefd | 185 | * orangefs data structures |
f7ab093f | 186 | */ |
8bb8aefd YL |
187 | struct orangefs_kernel_op_s { |
188 | enum orangefs_vfs_op_states op_state; | |
f7ab093f MM |
189 | __u64 tag; |
190 | ||
191 | /* | |
192 | * Set uses_shared_memory to 1 if this operation uses shared memory. | |
193 | * If true, then a retry on the op must also get a new shared memory | |
194 | * buffer and re-populate it. | |
195 | */ | |
196 | int uses_shared_memory; | |
197 | ||
8bb8aefd YL |
198 | struct orangefs_upcall_s upcall; |
199 | struct orangefs_downcall_s downcall; | |
f7ab093f MM |
200 | |
201 | wait_queue_head_t waitq; | |
202 | spinlock_t lock; | |
203 | ||
2a9e5c22 | 204 | struct completion done; |
f7ab093f | 205 | |
c817e266 MM |
206 | atomic_t ref_count; |
207 | ||
f7ab093f MM |
208 | /* VFS aio fields */ |
209 | ||
8bb8aefd | 210 | /* used by the async I/O code to stash the orangefs_kiocb_s structure */ |
f7ab093f MM |
211 | void *priv; |
212 | ||
f7ab093f MM |
213 | int attempts; |
214 | ||
215 | struct list_head list; | |
216 | }; | |
217 | ||
60831949 AV |
218 | #define set_op_state_waiting(op) ((op)->op_state = OP_VFS_STATE_WAITING) |
219 | #define set_op_state_inprogress(op) ((op)->op_state = OP_VFS_STATE_INPROGR) | |
220 | static inline void set_op_state_serviced(struct orangefs_kernel_op_s *op) | |
221 | { | |
222 | op->op_state = OP_VFS_STATE_SERVICED; | |
223 | wake_up_interruptible(&op->waitq); | |
224 | } | |
225 | static inline void set_op_state_purged(struct orangefs_kernel_op_s *op) | |
226 | { | |
227 | op->op_state |= OP_VFS_STATE_PURGED; | |
228 | wake_up_interruptible(&op->waitq); | |
229 | } | |
230 | ||
231 | #define op_state_waiting(op) ((op)->op_state & OP_VFS_STATE_WAITING) | |
232 | #define op_state_in_progress(op) ((op)->op_state & OP_VFS_STATE_INPROGR) | |
233 | #define op_state_serviced(op) ((op)->op_state & OP_VFS_STATE_SERVICED) | |
234 | #define op_state_purged(op) ((op)->op_state & OP_VFS_STATE_PURGED) | |
ed42fe05 AV |
235 | #define op_state_given_up(op) ((op)->op_state & OP_VFS_STATE_GIVEN_UP) |
236 | ||
237 | static inline void get_op(struct orangefs_kernel_op_s *op) | |
238 | { | |
239 | atomic_inc(&op->ref_count); | |
240 | gossip_debug(GOSSIP_DEV_DEBUG, | |
241 | "(get) Alloced OP (%p:%llu)\n", op, llu(op->tag)); | |
242 | } | |
243 | ||
244 | void __op_release(struct orangefs_kernel_op_s *op); | |
245 | ||
246 | static inline void op_release(struct orangefs_kernel_op_s *op) | |
247 | { | |
248 | if (atomic_dec_and_test(&op->ref_count)) { | |
249 | gossip_debug(GOSSIP_DEV_DEBUG, | |
250 | "(put) Releasing OP (%p:%llu)\n", op, llu((op)->tag)); | |
251 | __op_release(op); | |
252 | } | |
253 | } | |
60831949 | 254 | |
8bb8aefd YL |
255 | /* per inode private orangefs info */ |
256 | struct orangefs_inode_s { | |
257 | struct orangefs_object_kref refn; | |
258 | char link_target[ORANGEFS_NAME_MAX]; | |
f7ab093f MM |
259 | __s64 blksize; |
260 | /* | |
261 | * Reading/Writing Extended attributes need to acquire the appropriate | |
8bb8aefd | 262 | * reader/writer semaphore on the orangefs_inode_s structure. |
f7ab093f MM |
263 | */ |
264 | struct rw_semaphore xattr_sem; | |
265 | ||
266 | struct inode vfs_inode; | |
267 | sector_t last_failed_block_index_read; | |
268 | ||
269 | /* | |
270 | * State of in-memory attributes not yet flushed to disk associated | |
271 | * with this object | |
272 | */ | |
273 | unsigned long pinode_flags; | |
f7ab093f MM |
274 | }; |
275 | ||
276 | #define P_ATIME_FLAG 0 | |
277 | #define P_MTIME_FLAG 1 | |
278 | #define P_CTIME_FLAG 2 | |
279 | #define P_MODE_FLAG 3 | |
280 | ||
281 | #define ClearAtimeFlag(pinode) clear_bit(P_ATIME_FLAG, &(pinode)->pinode_flags) | |
282 | #define SetAtimeFlag(pinode) set_bit(P_ATIME_FLAG, &(pinode)->pinode_flags) | |
283 | #define AtimeFlag(pinode) test_bit(P_ATIME_FLAG, &(pinode)->pinode_flags) | |
284 | ||
285 | #define ClearMtimeFlag(pinode) clear_bit(P_MTIME_FLAG, &(pinode)->pinode_flags) | |
286 | #define SetMtimeFlag(pinode) set_bit(P_MTIME_FLAG, &(pinode)->pinode_flags) | |
287 | #define MtimeFlag(pinode) test_bit(P_MTIME_FLAG, &(pinode)->pinode_flags) | |
288 | ||
289 | #define ClearCtimeFlag(pinode) clear_bit(P_CTIME_FLAG, &(pinode)->pinode_flags) | |
290 | #define SetCtimeFlag(pinode) set_bit(P_CTIME_FLAG, &(pinode)->pinode_flags) | |
291 | #define CtimeFlag(pinode) test_bit(P_CTIME_FLAG, &(pinode)->pinode_flags) | |
292 | ||
293 | #define ClearModeFlag(pinode) clear_bit(P_MODE_FLAG, &(pinode)->pinode_flags) | |
294 | #define SetModeFlag(pinode) set_bit(P_MODE_FLAG, &(pinode)->pinode_flags) | |
295 | #define ModeFlag(pinode) test_bit(P_MODE_FLAG, &(pinode)->pinode_flags) | |
296 | ||
8bb8aefd YL |
297 | /* per superblock private orangefs info */ |
298 | struct orangefs_sb_info_s { | |
299 | struct orangefs_khandle root_khandle; | |
f7ab093f MM |
300 | __s32 fs_id; |
301 | int id; | |
302 | int flags; | |
8bb8aefd YL |
303 | #define ORANGEFS_OPT_INTR 0x01 |
304 | #define ORANGEFS_OPT_LOCAL_LOCK 0x02 | |
305 | char devname[ORANGEFS_MAX_SERVER_ADDR_LEN]; | |
f7ab093f MM |
306 | struct super_block *sb; |
307 | int mount_pending; | |
308 | struct list_head list; | |
309 | }; | |
310 | ||
f7ab093f MM |
311 | /* |
312 | * structure that holds the state of any async I/O operation issued | |
313 | * through the VFS. Needed especially to handle cancellation requests | |
314 | * or even completion notification so that the VFS client-side daemon | |
315 | * can free up its vfs_request slots. | |
316 | */ | |
8bb8aefd | 317 | struct orangefs_kiocb_s { |
f7ab093f MM |
318 | /* the pointer to the task that initiated the AIO */ |
319 | struct task_struct *tsk; | |
320 | ||
321 | /* pointer to the kiocb that kicked this operation */ | |
322 | struct kiocb *kiocb; | |
323 | ||
324 | /* buffer index that was used for the I/O */ | |
8bb8aefd | 325 | struct orangefs_bufmap *bufmap; |
f7ab093f MM |
326 | int buffer_index; |
327 | ||
8bb8aefd YL |
328 | /* orangefs kernel operation type */ |
329 | struct orangefs_kernel_op_s *op; | |
f7ab093f MM |
330 | |
331 | /* The user space buffers from/to which I/O is being staged */ | |
332 | struct iovec *iov; | |
333 | ||
334 | /* number of elements in the iovector */ | |
335 | unsigned long nr_segs; | |
336 | ||
337 | /* set to indicate the type of the operation */ | |
338 | int rw; | |
339 | ||
340 | /* file offset */ | |
341 | loff_t offset; | |
342 | ||
343 | /* and the count in bytes */ | |
344 | size_t bytes_to_be_copied; | |
345 | ||
346 | ssize_t bytes_copied; | |
347 | int needs_cleanup; | |
348 | }; | |
349 | ||
8bb8aefd | 350 | struct orangefs_stats { |
f7ab093f MM |
351 | unsigned long cache_hits; |
352 | unsigned long cache_misses; | |
353 | unsigned long reads; | |
354 | unsigned long writes; | |
355 | }; | |
356 | ||
8bb8aefd | 357 | extern struct orangefs_stats g_orangefs_stats; |
f7ab093f MM |
358 | |
359 | /* | |
54804949 MM |
360 | * NOTE: See Documentation/filesystems/porting for information |
361 | * on implementing FOO_I and properly accessing fs private data | |
362 | */ | |
8bb8aefd | 363 | static inline struct orangefs_inode_s *ORANGEFS_I(struct inode *inode) |
f7ab093f | 364 | { |
8bb8aefd | 365 | return container_of(inode, struct orangefs_inode_s, vfs_inode); |
f7ab093f MM |
366 | } |
367 | ||
8bb8aefd | 368 | static inline struct orangefs_sb_info_s *ORANGEFS_SB(struct super_block *sb) |
f7ab093f | 369 | { |
8bb8aefd | 370 | return (struct orangefs_sb_info_s *) sb->s_fs_info; |
f7ab093f MM |
371 | } |
372 | ||
373 | /* ino_t descends from "unsigned long", 8 bytes, 64 bits. */ | |
8bb8aefd | 374 | static inline ino_t orangefs_khandle_to_ino(struct orangefs_khandle *khandle) |
f7ab093f MM |
375 | { |
376 | union { | |
377 | unsigned char u[8]; | |
378 | __u64 ino; | |
379 | } ihandle; | |
380 | ||
381 | ihandle.u[0] = khandle->u[0] ^ khandle->u[4]; | |
382 | ihandle.u[1] = khandle->u[1] ^ khandle->u[5]; | |
383 | ihandle.u[2] = khandle->u[2] ^ khandle->u[6]; | |
384 | ihandle.u[3] = khandle->u[3] ^ khandle->u[7]; | |
385 | ihandle.u[4] = khandle->u[12] ^ khandle->u[8]; | |
386 | ihandle.u[5] = khandle->u[13] ^ khandle->u[9]; | |
387 | ihandle.u[6] = khandle->u[14] ^ khandle->u[10]; | |
388 | ihandle.u[7] = khandle->u[15] ^ khandle->u[11]; | |
389 | ||
390 | return ihandle.ino; | |
391 | } | |
392 | ||
8bb8aefd | 393 | static inline struct orangefs_khandle *get_khandle_from_ino(struct inode *inode) |
f7ab093f | 394 | { |
8bb8aefd | 395 | return &(ORANGEFS_I(inode)->refn.khandle); |
f7ab093f MM |
396 | } |
397 | ||
398 | static inline __s32 get_fsid_from_ino(struct inode *inode) | |
399 | { | |
8bb8aefd | 400 | return ORANGEFS_I(inode)->refn.fs_id; |
f7ab093f MM |
401 | } |
402 | ||
403 | static inline ino_t get_ino_from_khandle(struct inode *inode) | |
404 | { | |
8bb8aefd | 405 | struct orangefs_khandle *khandle; |
f7ab093f MM |
406 | ino_t ino; |
407 | ||
408 | khandle = get_khandle_from_ino(inode); | |
8bb8aefd | 409 | ino = orangefs_khandle_to_ino(khandle); |
f7ab093f MM |
410 | return ino; |
411 | } | |
412 | ||
413 | static inline ino_t get_parent_ino_from_dentry(struct dentry *dentry) | |
414 | { | |
415 | return get_ino_from_khandle(dentry->d_parent->d_inode); | |
416 | } | |
417 | ||
418 | static inline int is_root_handle(struct inode *inode) | |
419 | { | |
420 | gossip_debug(GOSSIP_DCACHE_DEBUG, | |
421 | "%s: root handle: %pU, this handle: %pU:\n", | |
422 | __func__, | |
8bb8aefd | 423 | &ORANGEFS_SB(inode->i_sb)->root_khandle, |
f7ab093f MM |
424 | get_khandle_from_ino(inode)); |
425 | ||
8bb8aefd | 426 | if (ORANGEFS_khandle_cmp(&(ORANGEFS_SB(inode->i_sb)->root_khandle), |
f7ab093f MM |
427 | get_khandle_from_ino(inode))) |
428 | return 0; | |
429 | else | |
430 | return 1; | |
431 | } | |
432 | ||
8bb8aefd | 433 | static inline int match_handle(struct orangefs_khandle resp_handle, |
f7ab093f MM |
434 | struct inode *inode) |
435 | { | |
436 | gossip_debug(GOSSIP_DCACHE_DEBUG, | |
437 | "%s: one handle: %pU, another handle:%pU:\n", | |
438 | __func__, | |
439 | &resp_handle, | |
440 | get_khandle_from_ino(inode)); | |
441 | ||
8bb8aefd | 442 | if (ORANGEFS_khandle_cmp(&resp_handle, get_khandle_from_ino(inode))) |
f7ab093f MM |
443 | return 0; |
444 | else | |
445 | return 1; | |
446 | } | |
447 | ||
448 | /* | |
8bb8aefd | 449 | * defined in orangefs-cache.c |
f7ab093f MM |
450 | */ |
451 | int op_cache_initialize(void); | |
452 | int op_cache_finalize(void); | |
8bb8aefd YL |
453 | struct orangefs_kernel_op_s *op_alloc(__s32 type); |
454 | char *get_opname_string(struct orangefs_kernel_op_s *new_op); | |
f7ab093f MM |
455 | |
456 | int dev_req_cache_initialize(void); | |
457 | int dev_req_cache_finalize(void); | |
458 | void *dev_req_alloc(void); | |
459 | void dev_req_release(void *); | |
460 | ||
8bb8aefd YL |
461 | int orangefs_inode_cache_initialize(void); |
462 | int orangefs_inode_cache_finalize(void); | |
f7ab093f MM |
463 | |
464 | int kiocb_cache_initialize(void); | |
465 | int kiocb_cache_finalize(void); | |
8bb8aefd YL |
466 | struct orangefs_kiocb_s *kiocb_alloc(void); |
467 | void kiocb_release(struct orangefs_kiocb_s *ptr); | |
f7ab093f MM |
468 | |
469 | /* | |
8bb8aefd | 470 | * defined in orangefs-mod.c |
f7ab093f MM |
471 | */ |
472 | void purge_inprogress_ops(void); | |
473 | ||
474 | /* | |
475 | * defined in waitqueue.c | |
476 | */ | |
f7ab093f MM |
477 | void purge_waiting_ops(void); |
478 | ||
479 | /* | |
480 | * defined in super.c | |
481 | */ | |
8bb8aefd | 482 | struct dentry *orangefs_mount(struct file_system_type *fst, |
f7ab093f MM |
483 | int flags, |
484 | const char *devname, | |
485 | void *data); | |
486 | ||
8bb8aefd YL |
487 | void orangefs_kill_sb(struct super_block *sb); |
488 | int orangefs_remount(struct super_block *sb); | |
f7ab093f MM |
489 | |
490 | int fsid_key_table_initialize(void); | |
491 | void fsid_key_table_finalize(void); | |
492 | ||
493 | /* | |
494 | * defined in inode.c | |
495 | */ | |
8bb8aefd YL |
496 | __u32 convert_to_orangefs_mask(unsigned long lite_mask); |
497 | struct inode *orangefs_new_inode(struct super_block *sb, | |
f7ab093f MM |
498 | struct inode *dir, |
499 | int mode, | |
500 | dev_t dev, | |
8bb8aefd | 501 | struct orangefs_object_kref *ref); |
f7ab093f | 502 | |
8bb8aefd | 503 | int orangefs_setattr(struct dentry *dentry, struct iattr *iattr); |
f7ab093f | 504 | |
8bb8aefd | 505 | int orangefs_getattr(struct vfsmount *mnt, |
f7ab093f MM |
506 | struct dentry *dentry, |
507 | struct kstat *kstat); | |
508 | ||
509 | /* | |
510 | * defined in xattr.c | |
511 | */ | |
8bb8aefd | 512 | int orangefs_setxattr(struct dentry *dentry, |
f7ab093f MM |
513 | const char *name, |
514 | const void *value, | |
515 | size_t size, | |
516 | int flags); | |
517 | ||
8bb8aefd | 518 | ssize_t orangefs_getxattr(struct dentry *dentry, |
f7ab093f MM |
519 | const char *name, |
520 | void *buffer, | |
521 | size_t size); | |
522 | ||
8bb8aefd | 523 | ssize_t orangefs_listxattr(struct dentry *dentry, char *buffer, size_t size); |
f7ab093f MM |
524 | |
525 | /* | |
526 | * defined in namei.c | |
527 | */ | |
8bb8aefd YL |
528 | struct inode *orangefs_iget(struct super_block *sb, |
529 | struct orangefs_object_kref *ref); | |
f7ab093f | 530 | |
8bb8aefd YL |
531 | ssize_t orangefs_inode_read(struct inode *inode, |
532 | struct iov_iter *iter, | |
533 | loff_t *offset, | |
534 | loff_t readahead_size); | |
f7ab093f MM |
535 | |
536 | /* | |
8bb8aefd | 537 | * defined in devorangefs-req.c |
f7ab093f | 538 | */ |
8bb8aefd YL |
539 | int orangefs_dev_init(void); |
540 | void orangefs_dev_cleanup(void); | |
f7ab093f MM |
541 | int is_daemon_in_service(void); |
542 | int fs_mount_pending(__s32 fsid); | |
543 | ||
544 | /* | |
8bb8aefd | 545 | * defined in orangefs-utils.c |
f7ab093f | 546 | */ |
8bb8aefd | 547 | __s32 fsid_of_op(struct orangefs_kernel_op_s *op); |
f7ab093f | 548 | |
8bb8aefd | 549 | int orangefs_flush_inode(struct inode *inode); |
f7ab093f | 550 | |
8bb8aefd | 551 | ssize_t orangefs_inode_getxattr(struct inode *inode, |
f7ab093f MM |
552 | const char *prefix, |
553 | const char *name, | |
554 | void *buffer, | |
555 | size_t size); | |
556 | ||
8bb8aefd | 557 | int orangefs_inode_setxattr(struct inode *inode, |
f7ab093f MM |
558 | const char *prefix, |
559 | const char *name, | |
560 | const void *value, | |
561 | size_t size, | |
562 | int flags); | |
563 | ||
99109822 | 564 | int orangefs_inode_getattr(struct inode *inode, __u32 mask, int check); |
f7ab093f | 565 | |
8bb8aefd | 566 | int orangefs_inode_setattr(struct inode *inode, struct iattr *iattr); |
f7ab093f | 567 | |
8bb8aefd | 568 | void orangefs_make_bad_inode(struct inode *inode); |
f7ab093f | 569 | |
c146c0b8 | 570 | void orangefs_block_signals(sigset_t *); |
f7ab093f | 571 | |
c146c0b8 | 572 | void orangefs_set_signals(sigset_t *); |
f7ab093f | 573 | |
8bb8aefd | 574 | int orangefs_unmount_sb(struct super_block *sb); |
f7ab093f | 575 | |
8bb8aefd | 576 | int orangefs_cancel_op_in_progress(__u64 tag); |
f7ab093f | 577 | |
8bb8aefd | 578 | static inline __u64 orangefs_convert_time_field(const struct timespec *ts) |
5714156b AV |
579 | { |
580 | return (__u64)ts->tv_sec; | |
581 | } | |
f7ab093f | 582 | |
8bb8aefd | 583 | int orangefs_normalize_to_errno(__s32 error_code); |
f7ab093f MM |
584 | |
585 | extern struct mutex devreq_mutex; | |
586 | extern struct mutex request_mutex; | |
587 | extern int debug; | |
588 | extern int op_timeout_secs; | |
589 | extern int slot_timeout_secs; | |
8bb8aefd YL |
590 | extern struct list_head orangefs_superblocks; |
591 | extern spinlock_t orangefs_superblocks_lock; | |
592 | extern struct list_head orangefs_request_list; | |
593 | extern spinlock_t orangefs_request_list_lock; | |
594 | extern wait_queue_head_t orangefs_request_list_waitq; | |
f7ab093f MM |
595 | extern struct list_head *htable_ops_in_progress; |
596 | extern spinlock_t htable_ops_in_progress_lock; | |
597 | extern int hash_table_size; | |
598 | ||
8bb8aefd YL |
599 | extern const struct address_space_operations orangefs_address_operations; |
600 | extern struct backing_dev_info orangefs_backing_dev_info; | |
601 | extern struct inode_operations orangefs_file_inode_operations; | |
602 | extern const struct file_operations orangefs_file_operations; | |
603 | extern struct inode_operations orangefs_symlink_inode_operations; | |
604 | extern struct inode_operations orangefs_dir_inode_operations; | |
605 | extern const struct file_operations orangefs_dir_operations; | |
606 | extern const struct dentry_operations orangefs_dentry_operations; | |
607 | extern const struct file_operations orangefs_devreq_file_operations; | |
f7ab093f | 608 | |
8bb8aefd | 609 | extern wait_queue_head_t orangefs_bufmap_init_waitq; |
f7ab093f MM |
610 | |
611 | /* | |
612 | * misc convenience macros | |
613 | */ | |
f7ab093f | 614 | |
8bb8aefd YL |
615 | #define ORANGEFS_OP_INTERRUPTIBLE 1 /* service_operation() is interruptible */ |
616 | #define ORANGEFS_OP_PRIORITY 2 /* service_operation() is high priority */ | |
617 | #define ORANGEFS_OP_CANCELLATION 4 /* this is a cancellation */ | |
618 | #define ORANGEFS_OP_NO_SEMAPHORE 8 /* don't acquire semaphore */ | |
619 | #define ORANGEFS_OP_ASYNC 16 /* Queue it, but don't wait */ | |
f7ab093f | 620 | |
8bb8aefd | 621 | int service_operation(struct orangefs_kernel_op_s *op, |
f7ab093f MM |
622 | const char *op_name, |
623 | int flags); | |
624 | ||
f7ab093f | 625 | #define get_interruptible_flag(inode) \ |
8bb8aefd YL |
626 | ((ORANGEFS_SB(inode->i_sb)->flags & ORANGEFS_OPT_INTR) ? \ |
627 | ORANGEFS_OP_INTERRUPTIBLE : 0) | |
f7ab093f | 628 | |
8bb8aefd | 629 | #define add_orangefs_sb(sb) \ |
f7ab093f MM |
630 | do { \ |
631 | gossip_debug(GOSSIP_SUPER_DEBUG, \ | |
8bb8aefd YL |
632 | "Adding SB %p to orangefs superblocks\n", \ |
633 | ORANGEFS_SB(sb)); \ | |
634 | spin_lock(&orangefs_superblocks_lock); \ | |
635 | list_add_tail(&ORANGEFS_SB(sb)->list, &orangefs_superblocks); \ | |
636 | spin_unlock(&orangefs_superblocks_lock); \ | |
f7ab093f MM |
637 | } while (0) |
638 | ||
8bb8aefd | 639 | #define remove_orangefs_sb(sb) \ |
f7ab093f MM |
640 | do { \ |
641 | struct list_head *tmp = NULL; \ | |
642 | struct list_head *tmp_safe = NULL; \ | |
8bb8aefd | 643 | struct orangefs_sb_info_s *orangefs_sb = NULL; \ |
f7ab093f | 644 | \ |
8bb8aefd YL |
645 | spin_lock(&orangefs_superblocks_lock); \ |
646 | list_for_each_safe(tmp, tmp_safe, &orangefs_superblocks) { \ | |
647 | orangefs_sb = list_entry(tmp, \ | |
648 | struct orangefs_sb_info_s, \ | |
f7ab093f | 649 | list); \ |
8bb8aefd | 650 | if (orangefs_sb && (orangefs_sb->sb == sb)) { \ |
f7ab093f | 651 | gossip_debug(GOSSIP_SUPER_DEBUG, \ |
8bb8aefd YL |
652 | "Removing SB %p from orangefs superblocks\n", \ |
653 | orangefs_sb); \ | |
654 | list_del(&orangefs_sb->list); \ | |
f7ab093f MM |
655 | break; \ |
656 | } \ | |
657 | } \ | |
8bb8aefd | 658 | spin_unlock(&orangefs_superblocks_lock); \ |
f7ab093f MM |
659 | } while (0) |
660 | ||
8bb8aefd YL |
661 | #define orangefs_lock_inode(inode) spin_lock(&inode->i_lock) |
662 | #define orangefs_unlock_inode(inode) spin_unlock(&inode->i_lock) | |
f7ab093f MM |
663 | |
664 | #define fill_default_sys_attrs(sys_attr, type, mode) \ | |
665 | do { \ | |
666 | sys_attr.owner = from_kuid(current_user_ns(), current_fsuid()); \ | |
667 | sys_attr.group = from_kgid(current_user_ns(), current_fsgid()); \ | |
668 | sys_attr.size = 0; \ | |
8bb8aefd | 669 | sys_attr.perms = ORANGEFS_util_translate_mode(mode); \ |
f7ab093f | 670 | sys_attr.objtype = type; \ |
8bb8aefd | 671 | sys_attr.mask = ORANGEFS_ATTR_SYS_ALL_SETABLE; \ |
f7ab093f MM |
672 | } while (0) |
673 | ||
8bb8aefd | 674 | #define orangefs_inode_lock(__i) mutex_lock(&(__i)->i_mutex) |
f7ab093f | 675 | |
8bb8aefd | 676 | #define orangefs_inode_unlock(__i) mutex_unlock(&(__i)->i_mutex) |
f7ab093f | 677 | |
8bb8aefd | 678 | static inline void orangefs_i_size_write(struct inode *inode, loff_t i_size) |
f7ab093f MM |
679 | { |
680 | #if BITS_PER_LONG == 32 && defined(CONFIG_SMP) | |
eb57bcc2 | 681 | orangefs_inode_lock(inode); |
f7ab093f MM |
682 | #endif |
683 | i_size_write(inode, i_size); | |
684 | #if BITS_PER_LONG == 32 && defined(CONFIG_SMP) | |
8bb8aefd | 685 | orangefs_inode_unlock(inode); |
f7ab093f MM |
686 | #endif |
687 | } | |
688 | ||
689 | static inline unsigned int diff(struct timeval *end, struct timeval *begin) | |
690 | { | |
691 | if (end->tv_usec < begin->tv_usec) { | |
692 | end->tv_usec += 1000000; | |
693 | end->tv_sec--; | |
694 | } | |
695 | end->tv_sec -= begin->tv_sec; | |
696 | end->tv_usec -= begin->tv_usec; | |
697 | return (end->tv_sec * 1000000) + end->tv_usec; | |
698 | } | |
699 | ||
8bb8aefd | 700 | #endif /* __ORANGEFSKERNEL_H */ |