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_GFP_FLAGS (GFP_KERNEL) |
132 | #define ORANGEFS_BUFMAP_GFP_FLAGS (GFP_KERNEL) | |
f7ab093f | 133 | |
8bb8aefd YL |
134 | /* orangefs xattr and acl related defines */ |
135 | #define ORANGEFS_XATTR_INDEX_POSIX_ACL_ACCESS 1 | |
136 | #define ORANGEFS_XATTR_INDEX_POSIX_ACL_DEFAULT 2 | |
137 | #define ORANGEFS_XATTR_INDEX_TRUSTED 3 | |
138 | #define ORANGEFS_XATTR_INDEX_DEFAULT 4 | |
f7ab093f | 139 | |
fef8b67c MM |
140 | #define ORANGEFS_XATTR_NAME_ACL_ACCESS XATTR_NAME_POSIX_ACL_ACCESS |
141 | #define ORANGEFS_XATTR_NAME_ACL_DEFAULT XATTR_NAME_POSIX_ACL_DEFAULT | |
8bb8aefd YL |
142 | #define ORANGEFS_XATTR_NAME_TRUSTED_PREFIX "trusted." |
143 | #define ORANGEFS_XATTR_NAME_DEFAULT_PREFIX "" | |
f7ab093f | 144 | |
8bb8aefd | 145 | /* these functions are defined in orangefs-utils.c */ |
f7ab093f MM |
146 | int orangefs_prepare_cdm_array(char *debug_array_string); |
147 | int orangefs_prepare_debugfs_help_string(int); | |
148 | ||
8bb8aefd YL |
149 | /* defined in orangefs-debugfs.c */ |
150 | int orangefs_client_debug_init(void); | |
f7ab093f MM |
151 | |
152 | void debug_string_to_mask(char *, void *, int); | |
153 | void do_c_mask(int, char *, struct client_debug_mask **); | |
154 | void do_k_mask(int, char *, __u64 **); | |
155 | ||
156 | void debug_mask_to_string(void *, int); | |
157 | void do_k_string(void *, int); | |
158 | void do_c_string(void *, int); | |
159 | int check_amalgam_keyword(void *, int); | |
160 | int keyword_is_amalgam(char *); | |
161 | ||
8bb8aefd YL |
162 | /*these variables are defined in orangefs-mod.c */ |
163 | extern char kernel_debug_string[ORANGEFS_MAX_DEBUG_STRING_LEN]; | |
164 | extern char client_debug_string[ORANGEFS_MAX_DEBUG_STRING_LEN]; | |
165 | extern char client_debug_array_string[ORANGEFS_MAX_DEBUG_STRING_LEN]; | |
f7ab093f MM |
166 | extern unsigned int kernel_mask_set_mod_init; |
167 | ||
8bb8aefd YL |
168 | extern int orangefs_init_acl(struct inode *inode, struct inode *dir); |
169 | extern const struct xattr_handler *orangefs_xattr_handlers[]; | |
f7ab093f | 170 | |
8bb8aefd YL |
171 | extern struct posix_acl *orangefs_get_acl(struct inode *inode, int type); |
172 | extern int orangefs_set_acl(struct inode *inode, struct posix_acl *acl, int type); | |
f7ab093f | 173 | |
f7ab093f MM |
174 | /* |
175 | * Redefine xtvec structure so that we could move helper functions out of | |
176 | * the define | |
177 | */ | |
178 | struct xtvec { | |
179 | __kernel_off_t xtv_off; /* must be off_t */ | |
180 | __kernel_size_t xtv_len; /* must be size_t */ | |
181 | }; | |
182 | ||
183 | /* | |
8bb8aefd | 184 | * orangefs data structures |
f7ab093f | 185 | */ |
8bb8aefd YL |
186 | struct orangefs_kernel_op_s { |
187 | enum orangefs_vfs_op_states op_state; | |
f7ab093f MM |
188 | __u64 tag; |
189 | ||
190 | /* | |
d37c0f30 MM |
191 | * Set uses_shared_memory to non zero if this operation uses |
192 | * shared memory. If true, then a retry on the op must also | |
193 | * get a new shared memory buffer and re-populate it. | |
194 | * Cancels don't care - it only matters for service_operation() | |
195 | * retry logics and cancels don't go through it anymore. It | |
196 | * safely stays non-zero when we use it as slot_to_free. | |
f7ab093f | 197 | */ |
78699e29 AV |
198 | union { |
199 | int uses_shared_memory; | |
200 | int slot_to_free; | |
201 | }; | |
f7ab093f | 202 | |
8bb8aefd YL |
203 | struct orangefs_upcall_s upcall; |
204 | struct orangefs_downcall_s downcall; | |
f7ab093f | 205 | |
d2d87a3b | 206 | struct completion waitq; |
f7ab093f MM |
207 | spinlock_t lock; |
208 | ||
f7ab093f MM |
209 | int attempts; |
210 | ||
211 | struct list_head list; | |
212 | }; | |
213 | ||
60831949 AV |
214 | #define set_op_state_waiting(op) ((op)->op_state = OP_VFS_STATE_WAITING) |
215 | #define set_op_state_inprogress(op) ((op)->op_state = OP_VFS_STATE_INPROGR) | |
2d4cae0d | 216 | #define set_op_state_given_up(op) ((op)->op_state = OP_VFS_STATE_GIVEN_UP) |
60831949 AV |
217 | static inline void set_op_state_serviced(struct orangefs_kernel_op_s *op) |
218 | { | |
219 | op->op_state = OP_VFS_STATE_SERVICED; | |
d2d87a3b | 220 | complete(&op->waitq); |
60831949 | 221 | } |
60831949 AV |
222 | |
223 | #define op_state_waiting(op) ((op)->op_state & OP_VFS_STATE_WAITING) | |
224 | #define op_state_in_progress(op) ((op)->op_state & OP_VFS_STATE_INPROGR) | |
225 | #define op_state_serviced(op) ((op)->op_state & OP_VFS_STATE_SERVICED) | |
226 | #define op_state_purged(op) ((op)->op_state & OP_VFS_STATE_PURGED) | |
ed42fe05 | 227 | #define op_state_given_up(op) ((op)->op_state & OP_VFS_STATE_GIVEN_UP) |
78699e29 | 228 | #define op_is_cancel(op) ((op)->upcall.type == ORANGEFS_VFS_OP_CANCEL) |
ed42fe05 | 229 | |
c1223ca4 | 230 | void op_release(struct orangefs_kernel_op_s *op); |
60831949 | 231 | |
78699e29 AV |
232 | extern void orangefs_bufmap_put(int); |
233 | static inline void put_cancel(struct orangefs_kernel_op_s *op) | |
234 | { | |
235 | orangefs_bufmap_put(op->slot_to_free); | |
236 | op_release(op); | |
237 | } | |
238 | ||
239 | static inline void set_op_state_purged(struct orangefs_kernel_op_s *op) | |
240 | { | |
241 | spin_lock(&op->lock); | |
242 | if (unlikely(op_is_cancel(op))) { | |
05a50a5b | 243 | list_del_init(&op->list); |
78699e29 AV |
244 | spin_unlock(&op->lock); |
245 | put_cancel(op); | |
246 | } else { | |
247 | op->op_state |= OP_VFS_STATE_PURGED; | |
d2d87a3b | 248 | complete(&op->waitq); |
78699e29 AV |
249 | spin_unlock(&op->lock); |
250 | } | |
251 | } | |
252 | ||
8bb8aefd YL |
253 | /* per inode private orangefs info */ |
254 | struct orangefs_inode_s { | |
255 | struct orangefs_object_kref refn; | |
256 | char link_target[ORANGEFS_NAME_MAX]; | |
f7ab093f MM |
257 | __s64 blksize; |
258 | /* | |
259 | * Reading/Writing Extended attributes need to acquire the appropriate | |
8bb8aefd | 260 | * reader/writer semaphore on the orangefs_inode_s structure. |
f7ab093f MM |
261 | */ |
262 | struct rw_semaphore xattr_sem; | |
263 | ||
264 | struct inode vfs_inode; | |
265 | sector_t last_failed_block_index_read; | |
266 | ||
267 | /* | |
268 | * State of in-memory attributes not yet flushed to disk associated | |
269 | * with this object | |
270 | */ | |
271 | unsigned long pinode_flags; | |
f7ab093f MM |
272 | }; |
273 | ||
274 | #define P_ATIME_FLAG 0 | |
275 | #define P_MTIME_FLAG 1 | |
276 | #define P_CTIME_FLAG 2 | |
277 | #define P_MODE_FLAG 3 | |
278 | ||
279 | #define ClearAtimeFlag(pinode) clear_bit(P_ATIME_FLAG, &(pinode)->pinode_flags) | |
280 | #define SetAtimeFlag(pinode) set_bit(P_ATIME_FLAG, &(pinode)->pinode_flags) | |
281 | #define AtimeFlag(pinode) test_bit(P_ATIME_FLAG, &(pinode)->pinode_flags) | |
282 | ||
283 | #define ClearMtimeFlag(pinode) clear_bit(P_MTIME_FLAG, &(pinode)->pinode_flags) | |
284 | #define SetMtimeFlag(pinode) set_bit(P_MTIME_FLAG, &(pinode)->pinode_flags) | |
285 | #define MtimeFlag(pinode) test_bit(P_MTIME_FLAG, &(pinode)->pinode_flags) | |
286 | ||
287 | #define ClearCtimeFlag(pinode) clear_bit(P_CTIME_FLAG, &(pinode)->pinode_flags) | |
288 | #define SetCtimeFlag(pinode) set_bit(P_CTIME_FLAG, &(pinode)->pinode_flags) | |
289 | #define CtimeFlag(pinode) test_bit(P_CTIME_FLAG, &(pinode)->pinode_flags) | |
290 | ||
291 | #define ClearModeFlag(pinode) clear_bit(P_MODE_FLAG, &(pinode)->pinode_flags) | |
292 | #define SetModeFlag(pinode) set_bit(P_MODE_FLAG, &(pinode)->pinode_flags) | |
293 | #define ModeFlag(pinode) test_bit(P_MODE_FLAG, &(pinode)->pinode_flags) | |
294 | ||
8bb8aefd YL |
295 | /* per superblock private orangefs info */ |
296 | struct orangefs_sb_info_s { | |
297 | struct orangefs_khandle root_khandle; | |
f7ab093f MM |
298 | __s32 fs_id; |
299 | int id; | |
300 | int flags; | |
8bb8aefd YL |
301 | #define ORANGEFS_OPT_INTR 0x01 |
302 | #define ORANGEFS_OPT_LOCAL_LOCK 0x02 | |
303 | char devname[ORANGEFS_MAX_SERVER_ADDR_LEN]; | |
f7ab093f MM |
304 | struct super_block *sb; |
305 | int mount_pending; | |
306 | struct list_head list; | |
307 | }; | |
308 | ||
f7ab093f MM |
309 | /* |
310 | * structure that holds the state of any async I/O operation issued | |
311 | * through the VFS. Needed especially to handle cancellation requests | |
312 | * or even completion notification so that the VFS client-side daemon | |
313 | * can free up its vfs_request slots. | |
314 | */ | |
8bb8aefd | 315 | struct orangefs_kiocb_s { |
f7ab093f MM |
316 | /* the pointer to the task that initiated the AIO */ |
317 | struct task_struct *tsk; | |
318 | ||
319 | /* pointer to the kiocb that kicked this operation */ | |
320 | struct kiocb *kiocb; | |
321 | ||
322 | /* buffer index that was used for the I/O */ | |
8bb8aefd | 323 | struct orangefs_bufmap *bufmap; |
f7ab093f MM |
324 | int buffer_index; |
325 | ||
8bb8aefd YL |
326 | /* orangefs kernel operation type */ |
327 | struct orangefs_kernel_op_s *op; | |
f7ab093f MM |
328 | |
329 | /* The user space buffers from/to which I/O is being staged */ | |
330 | struct iovec *iov; | |
331 | ||
332 | /* number of elements in the iovector */ | |
333 | unsigned long nr_segs; | |
334 | ||
335 | /* set to indicate the type of the operation */ | |
336 | int rw; | |
337 | ||
338 | /* file offset */ | |
339 | loff_t offset; | |
340 | ||
341 | /* and the count in bytes */ | |
342 | size_t bytes_to_be_copied; | |
343 | ||
344 | ssize_t bytes_copied; | |
345 | int needs_cleanup; | |
346 | }; | |
347 | ||
8bb8aefd | 348 | struct orangefs_stats { |
f7ab093f MM |
349 | unsigned long cache_hits; |
350 | unsigned long cache_misses; | |
351 | unsigned long reads; | |
352 | unsigned long writes; | |
353 | }; | |
354 | ||
8bb8aefd | 355 | extern struct orangefs_stats g_orangefs_stats; |
f7ab093f MM |
356 | |
357 | /* | |
54804949 MM |
358 | * NOTE: See Documentation/filesystems/porting for information |
359 | * on implementing FOO_I and properly accessing fs private data | |
360 | */ | |
8bb8aefd | 361 | static inline struct orangefs_inode_s *ORANGEFS_I(struct inode *inode) |
f7ab093f | 362 | { |
8bb8aefd | 363 | return container_of(inode, struct orangefs_inode_s, vfs_inode); |
f7ab093f MM |
364 | } |
365 | ||
8bb8aefd | 366 | static inline struct orangefs_sb_info_s *ORANGEFS_SB(struct super_block *sb) |
f7ab093f | 367 | { |
8bb8aefd | 368 | return (struct orangefs_sb_info_s *) sb->s_fs_info; |
f7ab093f MM |
369 | } |
370 | ||
371 | /* ino_t descends from "unsigned long", 8 bytes, 64 bits. */ | |
8bb8aefd | 372 | static inline ino_t orangefs_khandle_to_ino(struct orangefs_khandle *khandle) |
f7ab093f MM |
373 | { |
374 | union { | |
375 | unsigned char u[8]; | |
376 | __u64 ino; | |
377 | } ihandle; | |
378 | ||
379 | ihandle.u[0] = khandle->u[0] ^ khandle->u[4]; | |
380 | ihandle.u[1] = khandle->u[1] ^ khandle->u[5]; | |
381 | ihandle.u[2] = khandle->u[2] ^ khandle->u[6]; | |
382 | ihandle.u[3] = khandle->u[3] ^ khandle->u[7]; | |
383 | ihandle.u[4] = khandle->u[12] ^ khandle->u[8]; | |
384 | ihandle.u[5] = khandle->u[13] ^ khandle->u[9]; | |
385 | ihandle.u[6] = khandle->u[14] ^ khandle->u[10]; | |
386 | ihandle.u[7] = khandle->u[15] ^ khandle->u[11]; | |
387 | ||
388 | return ihandle.ino; | |
389 | } | |
390 | ||
8bb8aefd | 391 | static inline struct orangefs_khandle *get_khandle_from_ino(struct inode *inode) |
f7ab093f | 392 | { |
8bb8aefd | 393 | return &(ORANGEFS_I(inode)->refn.khandle); |
f7ab093f MM |
394 | } |
395 | ||
396 | static inline __s32 get_fsid_from_ino(struct inode *inode) | |
397 | { | |
8bb8aefd | 398 | return ORANGEFS_I(inode)->refn.fs_id; |
f7ab093f MM |
399 | } |
400 | ||
401 | static inline ino_t get_ino_from_khandle(struct inode *inode) | |
402 | { | |
8bb8aefd | 403 | struct orangefs_khandle *khandle; |
f7ab093f MM |
404 | ino_t ino; |
405 | ||
406 | khandle = get_khandle_from_ino(inode); | |
8bb8aefd | 407 | ino = orangefs_khandle_to_ino(khandle); |
f7ab093f MM |
408 | return ino; |
409 | } | |
410 | ||
411 | static inline ino_t get_parent_ino_from_dentry(struct dentry *dentry) | |
412 | { | |
413 | return get_ino_from_khandle(dentry->d_parent->d_inode); | |
414 | } | |
415 | ||
416 | static inline int is_root_handle(struct inode *inode) | |
417 | { | |
418 | gossip_debug(GOSSIP_DCACHE_DEBUG, | |
419 | "%s: root handle: %pU, this handle: %pU:\n", | |
420 | __func__, | |
8bb8aefd | 421 | &ORANGEFS_SB(inode->i_sb)->root_khandle, |
f7ab093f MM |
422 | get_khandle_from_ino(inode)); |
423 | ||
8bb8aefd | 424 | if (ORANGEFS_khandle_cmp(&(ORANGEFS_SB(inode->i_sb)->root_khandle), |
f7ab093f MM |
425 | get_khandle_from_ino(inode))) |
426 | return 0; | |
427 | else | |
428 | return 1; | |
429 | } | |
430 | ||
8bb8aefd | 431 | static inline int match_handle(struct orangefs_khandle resp_handle, |
f7ab093f MM |
432 | struct inode *inode) |
433 | { | |
434 | gossip_debug(GOSSIP_DCACHE_DEBUG, | |
435 | "%s: one handle: %pU, another handle:%pU:\n", | |
436 | __func__, | |
437 | &resp_handle, | |
438 | get_khandle_from_ino(inode)); | |
439 | ||
8bb8aefd | 440 | if (ORANGEFS_khandle_cmp(&resp_handle, get_khandle_from_ino(inode))) |
f7ab093f MM |
441 | return 0; |
442 | else | |
443 | return 1; | |
444 | } | |
445 | ||
446 | /* | |
8bb8aefd | 447 | * defined in orangefs-cache.c |
f7ab093f MM |
448 | */ |
449 | int op_cache_initialize(void); | |
450 | int op_cache_finalize(void); | |
8bb8aefd | 451 | struct orangefs_kernel_op_s *op_alloc(__s32 type); |
78699e29 | 452 | void orangefs_new_tag(struct orangefs_kernel_op_s *op); |
8bb8aefd | 453 | char *get_opname_string(struct orangefs_kernel_op_s *new_op); |
f7ab093f | 454 | |
8bb8aefd YL |
455 | int orangefs_inode_cache_initialize(void); |
456 | int orangefs_inode_cache_finalize(void); | |
f7ab093f | 457 | |
f7ab093f | 458 | /* |
8bb8aefd | 459 | * defined in orangefs-mod.c |
f7ab093f MM |
460 | */ |
461 | void purge_inprogress_ops(void); | |
462 | ||
463 | /* | |
464 | * defined in waitqueue.c | |
465 | */ | |
f7ab093f MM |
466 | void purge_waiting_ops(void); |
467 | ||
468 | /* | |
469 | * defined in super.c | |
470 | */ | |
8bb8aefd | 471 | struct dentry *orangefs_mount(struct file_system_type *fst, |
f7ab093f MM |
472 | int flags, |
473 | const char *devname, | |
474 | void *data); | |
475 | ||
8bb8aefd YL |
476 | void orangefs_kill_sb(struct super_block *sb); |
477 | int orangefs_remount(struct super_block *sb); | |
f7ab093f MM |
478 | |
479 | int fsid_key_table_initialize(void); | |
480 | void fsid_key_table_finalize(void); | |
481 | ||
482 | /* | |
483 | * defined in inode.c | |
484 | */ | |
8bb8aefd YL |
485 | __u32 convert_to_orangefs_mask(unsigned long lite_mask); |
486 | struct inode *orangefs_new_inode(struct super_block *sb, | |
f7ab093f MM |
487 | struct inode *dir, |
488 | int mode, | |
489 | dev_t dev, | |
8bb8aefd | 490 | struct orangefs_object_kref *ref); |
f7ab093f | 491 | |
8bb8aefd | 492 | int orangefs_setattr(struct dentry *dentry, struct iattr *iattr); |
f7ab093f | 493 | |
8bb8aefd | 494 | int orangefs_getattr(struct vfsmount *mnt, |
f7ab093f MM |
495 | struct dentry *dentry, |
496 | struct kstat *kstat); | |
497 | ||
933287da MB |
498 | int orangefs_permission(struct inode *inode, int mask); |
499 | ||
f7ab093f MM |
500 | /* |
501 | * defined in xattr.c | |
502 | */ | |
8bb8aefd | 503 | int orangefs_setxattr(struct dentry *dentry, |
f7ab093f MM |
504 | const char *name, |
505 | const void *value, | |
506 | size_t size, | |
507 | int flags); | |
508 | ||
8bb8aefd | 509 | ssize_t orangefs_getxattr(struct dentry *dentry, |
f7ab093f MM |
510 | const char *name, |
511 | void *buffer, | |
512 | size_t size); | |
513 | ||
8bb8aefd | 514 | ssize_t orangefs_listxattr(struct dentry *dentry, char *buffer, size_t size); |
f7ab093f MM |
515 | |
516 | /* | |
517 | * defined in namei.c | |
518 | */ | |
8bb8aefd YL |
519 | struct inode *orangefs_iget(struct super_block *sb, |
520 | struct orangefs_object_kref *ref); | |
f7ab093f | 521 | |
8bb8aefd YL |
522 | ssize_t orangefs_inode_read(struct inode *inode, |
523 | struct iov_iter *iter, | |
524 | loff_t *offset, | |
525 | loff_t readahead_size); | |
f7ab093f MM |
526 | |
527 | /* | |
8bb8aefd | 528 | * defined in devorangefs-req.c |
f7ab093f | 529 | */ |
8bb8aefd YL |
530 | int orangefs_dev_init(void); |
531 | void orangefs_dev_cleanup(void); | |
f7ab093f | 532 | int is_daemon_in_service(void); |
78699e29 | 533 | bool __is_daemon_in_service(void); |
f7ab093f MM |
534 | int fs_mount_pending(__s32 fsid); |
535 | ||
536 | /* | |
8bb8aefd | 537 | * defined in orangefs-utils.c |
f7ab093f | 538 | */ |
8bb8aefd | 539 | __s32 fsid_of_op(struct orangefs_kernel_op_s *op); |
f7ab093f | 540 | |
8bb8aefd | 541 | int orangefs_flush_inode(struct inode *inode); |
f7ab093f | 542 | |
8bb8aefd | 543 | ssize_t orangefs_inode_getxattr(struct inode *inode, |
f7ab093f MM |
544 | const char *prefix, |
545 | const char *name, | |
546 | void *buffer, | |
547 | size_t size); | |
548 | ||
8bb8aefd | 549 | int orangefs_inode_setxattr(struct inode *inode, |
f7ab093f MM |
550 | const char *prefix, |
551 | const char *name, | |
552 | const void *value, | |
553 | size_t size, | |
554 | int flags); | |
555 | ||
99109822 | 556 | int orangefs_inode_getattr(struct inode *inode, __u32 mask, int check); |
f7ab093f | 557 | |
8bb8aefd | 558 | int orangefs_inode_setattr(struct inode *inode, struct iattr *iattr); |
f7ab093f | 559 | |
8bb8aefd | 560 | void orangefs_make_bad_inode(struct inode *inode); |
f7ab093f | 561 | |
8bb8aefd | 562 | int orangefs_unmount_sb(struct super_block *sb); |
f7ab093f | 563 | |
78699e29 | 564 | bool orangefs_cancel_op_in_progress(struct orangefs_kernel_op_s *op); |
f7ab093f | 565 | |
8bb8aefd | 566 | static inline __u64 orangefs_convert_time_field(const struct timespec *ts) |
5714156b AV |
567 | { |
568 | return (__u64)ts->tv_sec; | |
569 | } | |
f7ab093f | 570 | |
8bb8aefd | 571 | int orangefs_normalize_to_errno(__s32 error_code); |
f7ab093f MM |
572 | |
573 | extern struct mutex devreq_mutex; | |
574 | extern struct mutex request_mutex; | |
575 | extern int debug; | |
576 | extern int op_timeout_secs; | |
577 | extern int slot_timeout_secs; | |
8bb8aefd YL |
578 | extern struct list_head orangefs_superblocks; |
579 | extern spinlock_t orangefs_superblocks_lock; | |
580 | extern struct list_head orangefs_request_list; | |
581 | extern spinlock_t orangefs_request_list_lock; | |
582 | extern wait_queue_head_t orangefs_request_list_waitq; | |
f7ab093f MM |
583 | extern struct list_head *htable_ops_in_progress; |
584 | extern spinlock_t htable_ops_in_progress_lock; | |
585 | extern int hash_table_size; | |
586 | ||
8bb8aefd YL |
587 | extern const struct address_space_operations orangefs_address_operations; |
588 | extern struct backing_dev_info orangefs_backing_dev_info; | |
589 | extern struct inode_operations orangefs_file_inode_operations; | |
590 | extern const struct file_operations orangefs_file_operations; | |
591 | extern struct inode_operations orangefs_symlink_inode_operations; | |
592 | extern struct inode_operations orangefs_dir_inode_operations; | |
593 | extern const struct file_operations orangefs_dir_operations; | |
594 | extern const struct dentry_operations orangefs_dentry_operations; | |
595 | extern const struct file_operations orangefs_devreq_file_operations; | |
f7ab093f | 596 | |
8bb8aefd | 597 | extern wait_queue_head_t orangefs_bufmap_init_waitq; |
f7ab093f MM |
598 | |
599 | /* | |
600 | * misc convenience macros | |
601 | */ | |
f7ab093f | 602 | |
8bb8aefd YL |
603 | #define ORANGEFS_OP_INTERRUPTIBLE 1 /* service_operation() is interruptible */ |
604 | #define ORANGEFS_OP_PRIORITY 2 /* service_operation() is high priority */ | |
605 | #define ORANGEFS_OP_CANCELLATION 4 /* this is a cancellation */ | |
606 | #define ORANGEFS_OP_NO_SEMAPHORE 8 /* don't acquire semaphore */ | |
607 | #define ORANGEFS_OP_ASYNC 16 /* Queue it, but don't wait */ | |
f7ab093f | 608 | |
8bb8aefd | 609 | int service_operation(struct orangefs_kernel_op_s *op, |
f7ab093f MM |
610 | const char *op_name, |
611 | int flags); | |
612 | ||
f7ab093f | 613 | #define get_interruptible_flag(inode) \ |
8bb8aefd YL |
614 | ((ORANGEFS_SB(inode->i_sb)->flags & ORANGEFS_OPT_INTR) ? \ |
615 | ORANGEFS_OP_INTERRUPTIBLE : 0) | |
f7ab093f | 616 | |
8bb8aefd | 617 | #define add_orangefs_sb(sb) \ |
f7ab093f MM |
618 | do { \ |
619 | gossip_debug(GOSSIP_SUPER_DEBUG, \ | |
8bb8aefd YL |
620 | "Adding SB %p to orangefs superblocks\n", \ |
621 | ORANGEFS_SB(sb)); \ | |
622 | spin_lock(&orangefs_superblocks_lock); \ | |
623 | list_add_tail(&ORANGEFS_SB(sb)->list, &orangefs_superblocks); \ | |
624 | spin_unlock(&orangefs_superblocks_lock); \ | |
f7ab093f MM |
625 | } while (0) |
626 | ||
8bb8aefd | 627 | #define remove_orangefs_sb(sb) \ |
f7ab093f MM |
628 | do { \ |
629 | struct list_head *tmp = NULL; \ | |
630 | struct list_head *tmp_safe = NULL; \ | |
8bb8aefd | 631 | struct orangefs_sb_info_s *orangefs_sb = NULL; \ |
f7ab093f | 632 | \ |
8bb8aefd YL |
633 | spin_lock(&orangefs_superblocks_lock); \ |
634 | list_for_each_safe(tmp, tmp_safe, &orangefs_superblocks) { \ | |
635 | orangefs_sb = list_entry(tmp, \ | |
636 | struct orangefs_sb_info_s, \ | |
f7ab093f | 637 | list); \ |
8bb8aefd | 638 | if (orangefs_sb && (orangefs_sb->sb == sb)) { \ |
f7ab093f | 639 | gossip_debug(GOSSIP_SUPER_DEBUG, \ |
8bb8aefd YL |
640 | "Removing SB %p from orangefs superblocks\n", \ |
641 | orangefs_sb); \ | |
642 | list_del(&orangefs_sb->list); \ | |
f7ab093f MM |
643 | break; \ |
644 | } \ | |
645 | } \ | |
8bb8aefd | 646 | spin_unlock(&orangefs_superblocks_lock); \ |
f7ab093f MM |
647 | } while (0) |
648 | ||
8bb8aefd YL |
649 | #define orangefs_lock_inode(inode) spin_lock(&inode->i_lock) |
650 | #define orangefs_unlock_inode(inode) spin_unlock(&inode->i_lock) | |
f7ab093f MM |
651 | |
652 | #define fill_default_sys_attrs(sys_attr, type, mode) \ | |
653 | do { \ | |
654 | sys_attr.owner = from_kuid(current_user_ns(), current_fsuid()); \ | |
655 | sys_attr.group = from_kgid(current_user_ns(), current_fsgid()); \ | |
656 | sys_attr.size = 0; \ | |
8bb8aefd | 657 | sys_attr.perms = ORANGEFS_util_translate_mode(mode); \ |
f7ab093f | 658 | sys_attr.objtype = type; \ |
8bb8aefd | 659 | sys_attr.mask = ORANGEFS_ATTR_SYS_ALL_SETABLE; \ |
f7ab093f MM |
660 | } while (0) |
661 | ||
8bb8aefd | 662 | #define orangefs_inode_lock(__i) mutex_lock(&(__i)->i_mutex) |
f7ab093f | 663 | |
8bb8aefd | 664 | #define orangefs_inode_unlock(__i) mutex_unlock(&(__i)->i_mutex) |
f7ab093f | 665 | |
8bb8aefd | 666 | static inline void orangefs_i_size_write(struct inode *inode, loff_t i_size) |
f7ab093f MM |
667 | { |
668 | #if BITS_PER_LONG == 32 && defined(CONFIG_SMP) | |
eb57bcc2 | 669 | orangefs_inode_lock(inode); |
f7ab093f MM |
670 | #endif |
671 | i_size_write(inode, i_size); | |
672 | #if BITS_PER_LONG == 32 && defined(CONFIG_SMP) | |
8bb8aefd | 673 | orangefs_inode_unlock(inode); |
f7ab093f MM |
674 | #endif |
675 | } | |
676 | ||
677 | static inline unsigned int diff(struct timeval *end, struct timeval *begin) | |
678 | { | |
679 | if (end->tv_usec < begin->tv_usec) { | |
680 | end->tv_usec += 1000000; | |
681 | end->tv_sec--; | |
682 | } | |
683 | end->tv_sec -= begin->tv_sec; | |
684 | end->tv_usec -= begin->tv_usec; | |
685 | return (end->tv_sec * 1000000) + end->tv_usec; | |
686 | } | |
687 | ||
8bb8aefd | 688 | #endif /* __ORANGEFSKERNEL_H */ |