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 | * An array of client_debug_mask will be built to hold debug keyword/mask | |
105 | * values fetched from userspace. | |
106 | */ | |
107 | struct client_debug_mask { | |
108 | char *keyword; | |
109 | __u64 mask1; | |
110 | __u64 mask2; | |
111 | }; | |
112 | ||
113 | /* | |
8bb8aefd | 114 | * orangefs kernel memory related flags |
f7ab093f MM |
115 | */ |
116 | ||
8bb8aefd YL |
117 | #if ((defined ORANGEFS_KERNEL_DEBUG) && (defined CONFIG_DEBUG_SLAB)) |
118 | #define ORANGEFS_CACHE_CREATE_FLAGS SLAB_RED_ZONE | |
f7ab093f | 119 | #else |
8bb8aefd YL |
120 | #define ORANGEFS_CACHE_CREATE_FLAGS 0 |
121 | #endif /* ((defined ORANGEFS_KERNEL_DEBUG) && (defined CONFIG_DEBUG_SLAB)) */ | |
f7ab093f | 122 | |
8bb8aefd YL |
123 | #define ORANGEFS_GFP_FLAGS (GFP_KERNEL) |
124 | #define ORANGEFS_BUFMAP_GFP_FLAGS (GFP_KERNEL) | |
f7ab093f | 125 | |
8bb8aefd YL |
126 | /* orangefs xattr and acl related defines */ |
127 | #define ORANGEFS_XATTR_INDEX_POSIX_ACL_ACCESS 1 | |
128 | #define ORANGEFS_XATTR_INDEX_POSIX_ACL_DEFAULT 2 | |
129 | #define ORANGEFS_XATTR_INDEX_TRUSTED 3 | |
130 | #define ORANGEFS_XATTR_INDEX_DEFAULT 4 | |
f7ab093f | 131 | |
fef8b67c MM |
132 | #define ORANGEFS_XATTR_NAME_ACL_ACCESS XATTR_NAME_POSIX_ACL_ACCESS |
133 | #define ORANGEFS_XATTR_NAME_ACL_DEFAULT XATTR_NAME_POSIX_ACL_DEFAULT | |
8bb8aefd YL |
134 | #define ORANGEFS_XATTR_NAME_TRUSTED_PREFIX "trusted." |
135 | #define ORANGEFS_XATTR_NAME_DEFAULT_PREFIX "" | |
f7ab093f | 136 | |
8bb8aefd | 137 | /* these functions are defined in orangefs-utils.c */ |
f7ab093f MM |
138 | int orangefs_prepare_cdm_array(char *debug_array_string); |
139 | int orangefs_prepare_debugfs_help_string(int); | |
140 | ||
8bb8aefd YL |
141 | /* defined in orangefs-debugfs.c */ |
142 | int orangefs_client_debug_init(void); | |
f7ab093f MM |
143 | |
144 | void debug_string_to_mask(char *, void *, int); | |
145 | void do_c_mask(int, char *, struct client_debug_mask **); | |
146 | void do_k_mask(int, char *, __u64 **); | |
147 | ||
148 | void debug_mask_to_string(void *, int); | |
149 | void do_k_string(void *, int); | |
150 | void do_c_string(void *, int); | |
151 | int check_amalgam_keyword(void *, int); | |
152 | int keyword_is_amalgam(char *); | |
153 | ||
8bb8aefd YL |
154 | /*these variables are defined in orangefs-mod.c */ |
155 | extern char kernel_debug_string[ORANGEFS_MAX_DEBUG_STRING_LEN]; | |
156 | extern char client_debug_string[ORANGEFS_MAX_DEBUG_STRING_LEN]; | |
157 | extern char client_debug_array_string[ORANGEFS_MAX_DEBUG_STRING_LEN]; | |
f7ab093f MM |
158 | extern unsigned int kernel_mask_set_mod_init; |
159 | ||
8bb8aefd YL |
160 | extern int orangefs_init_acl(struct inode *inode, struct inode *dir); |
161 | extern const struct xattr_handler *orangefs_xattr_handlers[]; | |
f7ab093f | 162 | |
8bb8aefd YL |
163 | extern struct posix_acl *orangefs_get_acl(struct inode *inode, int type); |
164 | extern int orangefs_set_acl(struct inode *inode, struct posix_acl *acl, int type); | |
f7ab093f | 165 | |
f7ab093f MM |
166 | /* |
167 | * Redefine xtvec structure so that we could move helper functions out of | |
168 | * the define | |
169 | */ | |
170 | struct xtvec { | |
171 | __kernel_off_t xtv_off; /* must be off_t */ | |
172 | __kernel_size_t xtv_len; /* must be size_t */ | |
173 | }; | |
174 | ||
175 | /* | |
8bb8aefd | 176 | * orangefs data structures |
f7ab093f | 177 | */ |
8bb8aefd YL |
178 | struct orangefs_kernel_op_s { |
179 | enum orangefs_vfs_op_states op_state; | |
f7ab093f MM |
180 | __u64 tag; |
181 | ||
182 | /* | |
d37c0f30 MM |
183 | * Set uses_shared_memory to non zero if this operation uses |
184 | * shared memory. If true, then a retry on the op must also | |
185 | * get a new shared memory buffer and re-populate it. | |
186 | * Cancels don't care - it only matters for service_operation() | |
187 | * retry logics and cancels don't go through it anymore. It | |
188 | * safely stays non-zero when we use it as slot_to_free. | |
f7ab093f | 189 | */ |
78699e29 AV |
190 | union { |
191 | int uses_shared_memory; | |
192 | int slot_to_free; | |
193 | }; | |
f7ab093f | 194 | |
8bb8aefd YL |
195 | struct orangefs_upcall_s upcall; |
196 | struct orangefs_downcall_s downcall; | |
f7ab093f | 197 | |
d2d87a3b | 198 | struct completion waitq; |
f7ab093f MM |
199 | spinlock_t lock; |
200 | ||
f7ab093f MM |
201 | int attempts; |
202 | ||
203 | struct list_head list; | |
204 | }; | |
205 | ||
60831949 AV |
206 | #define set_op_state_waiting(op) ((op)->op_state = OP_VFS_STATE_WAITING) |
207 | #define set_op_state_inprogress(op) ((op)->op_state = OP_VFS_STATE_INPROGR) | |
2d4cae0d | 208 | #define set_op_state_given_up(op) ((op)->op_state = OP_VFS_STATE_GIVEN_UP) |
60831949 AV |
209 | static inline void set_op_state_serviced(struct orangefs_kernel_op_s *op) |
210 | { | |
211 | op->op_state = OP_VFS_STATE_SERVICED; | |
d2d87a3b | 212 | complete(&op->waitq); |
60831949 | 213 | } |
60831949 AV |
214 | |
215 | #define op_state_waiting(op) ((op)->op_state & OP_VFS_STATE_WAITING) | |
216 | #define op_state_in_progress(op) ((op)->op_state & OP_VFS_STATE_INPROGR) | |
217 | #define op_state_serviced(op) ((op)->op_state & OP_VFS_STATE_SERVICED) | |
218 | #define op_state_purged(op) ((op)->op_state & OP_VFS_STATE_PURGED) | |
ed42fe05 | 219 | #define op_state_given_up(op) ((op)->op_state & OP_VFS_STATE_GIVEN_UP) |
78699e29 | 220 | #define op_is_cancel(op) ((op)->upcall.type == ORANGEFS_VFS_OP_CANCEL) |
ed42fe05 | 221 | |
c1223ca4 | 222 | void op_release(struct orangefs_kernel_op_s *op); |
60831949 | 223 | |
78699e29 AV |
224 | extern void orangefs_bufmap_put(int); |
225 | static inline void put_cancel(struct orangefs_kernel_op_s *op) | |
226 | { | |
227 | orangefs_bufmap_put(op->slot_to_free); | |
228 | op_release(op); | |
229 | } | |
230 | ||
231 | static inline void set_op_state_purged(struct orangefs_kernel_op_s *op) | |
232 | { | |
233 | spin_lock(&op->lock); | |
234 | if (unlikely(op_is_cancel(op))) { | |
05a50a5b | 235 | list_del_init(&op->list); |
78699e29 AV |
236 | spin_unlock(&op->lock); |
237 | put_cancel(op); | |
238 | } else { | |
239 | op->op_state |= OP_VFS_STATE_PURGED; | |
d2d87a3b | 240 | complete(&op->waitq); |
78699e29 AV |
241 | spin_unlock(&op->lock); |
242 | } | |
243 | } | |
244 | ||
8bb8aefd YL |
245 | /* per inode private orangefs info */ |
246 | struct orangefs_inode_s { | |
247 | struct orangefs_object_kref refn; | |
248 | char link_target[ORANGEFS_NAME_MAX]; | |
f7ab093f MM |
249 | __s64 blksize; |
250 | /* | |
251 | * Reading/Writing Extended attributes need to acquire the appropriate | |
8bb8aefd | 252 | * reader/writer semaphore on the orangefs_inode_s structure. |
f7ab093f MM |
253 | */ |
254 | struct rw_semaphore xattr_sem; | |
255 | ||
256 | struct inode vfs_inode; | |
257 | sector_t last_failed_block_index_read; | |
258 | ||
259 | /* | |
260 | * State of in-memory attributes not yet flushed to disk associated | |
261 | * with this object | |
262 | */ | |
263 | unsigned long pinode_flags; | |
f7ab093f MM |
264 | }; |
265 | ||
266 | #define P_ATIME_FLAG 0 | |
267 | #define P_MTIME_FLAG 1 | |
268 | #define P_CTIME_FLAG 2 | |
269 | #define P_MODE_FLAG 3 | |
270 | ||
271 | #define ClearAtimeFlag(pinode) clear_bit(P_ATIME_FLAG, &(pinode)->pinode_flags) | |
272 | #define SetAtimeFlag(pinode) set_bit(P_ATIME_FLAG, &(pinode)->pinode_flags) | |
273 | #define AtimeFlag(pinode) test_bit(P_ATIME_FLAG, &(pinode)->pinode_flags) | |
274 | ||
275 | #define ClearMtimeFlag(pinode) clear_bit(P_MTIME_FLAG, &(pinode)->pinode_flags) | |
276 | #define SetMtimeFlag(pinode) set_bit(P_MTIME_FLAG, &(pinode)->pinode_flags) | |
277 | #define MtimeFlag(pinode) test_bit(P_MTIME_FLAG, &(pinode)->pinode_flags) | |
278 | ||
279 | #define ClearCtimeFlag(pinode) clear_bit(P_CTIME_FLAG, &(pinode)->pinode_flags) | |
280 | #define SetCtimeFlag(pinode) set_bit(P_CTIME_FLAG, &(pinode)->pinode_flags) | |
281 | #define CtimeFlag(pinode) test_bit(P_CTIME_FLAG, &(pinode)->pinode_flags) | |
282 | ||
283 | #define ClearModeFlag(pinode) clear_bit(P_MODE_FLAG, &(pinode)->pinode_flags) | |
284 | #define SetModeFlag(pinode) set_bit(P_MODE_FLAG, &(pinode)->pinode_flags) | |
285 | #define ModeFlag(pinode) test_bit(P_MODE_FLAG, &(pinode)->pinode_flags) | |
286 | ||
8bb8aefd YL |
287 | /* per superblock private orangefs info */ |
288 | struct orangefs_sb_info_s { | |
289 | struct orangefs_khandle root_khandle; | |
f7ab093f MM |
290 | __s32 fs_id; |
291 | int id; | |
292 | int flags; | |
8bb8aefd YL |
293 | #define ORANGEFS_OPT_INTR 0x01 |
294 | #define ORANGEFS_OPT_LOCAL_LOCK 0x02 | |
295 | char devname[ORANGEFS_MAX_SERVER_ADDR_LEN]; | |
f7ab093f MM |
296 | struct super_block *sb; |
297 | int mount_pending; | |
298 | struct list_head list; | |
299 | }; | |
300 | ||
f7ab093f MM |
301 | /* |
302 | * structure that holds the state of any async I/O operation issued | |
303 | * through the VFS. Needed especially to handle cancellation requests | |
304 | * or even completion notification so that the VFS client-side daemon | |
305 | * can free up its vfs_request slots. | |
306 | */ | |
8bb8aefd | 307 | struct orangefs_kiocb_s { |
f7ab093f MM |
308 | /* the pointer to the task that initiated the AIO */ |
309 | struct task_struct *tsk; | |
310 | ||
311 | /* pointer to the kiocb that kicked this operation */ | |
312 | struct kiocb *kiocb; | |
313 | ||
314 | /* buffer index that was used for the I/O */ | |
8bb8aefd | 315 | struct orangefs_bufmap *bufmap; |
f7ab093f MM |
316 | int buffer_index; |
317 | ||
8bb8aefd YL |
318 | /* orangefs kernel operation type */ |
319 | struct orangefs_kernel_op_s *op; | |
f7ab093f MM |
320 | |
321 | /* The user space buffers from/to which I/O is being staged */ | |
322 | struct iovec *iov; | |
323 | ||
324 | /* number of elements in the iovector */ | |
325 | unsigned long nr_segs; | |
326 | ||
327 | /* set to indicate the type of the operation */ | |
328 | int rw; | |
329 | ||
330 | /* file offset */ | |
331 | loff_t offset; | |
332 | ||
333 | /* and the count in bytes */ | |
334 | size_t bytes_to_be_copied; | |
335 | ||
336 | ssize_t bytes_copied; | |
337 | int needs_cleanup; | |
338 | }; | |
339 | ||
8bb8aefd | 340 | struct orangefs_stats { |
f7ab093f MM |
341 | unsigned long cache_hits; |
342 | unsigned long cache_misses; | |
343 | unsigned long reads; | |
344 | unsigned long writes; | |
345 | }; | |
346 | ||
8bb8aefd | 347 | extern struct orangefs_stats g_orangefs_stats; |
f7ab093f MM |
348 | |
349 | /* | |
54804949 MM |
350 | * NOTE: See Documentation/filesystems/porting for information |
351 | * on implementing FOO_I and properly accessing fs private data | |
352 | */ | |
8bb8aefd | 353 | static inline struct orangefs_inode_s *ORANGEFS_I(struct inode *inode) |
f7ab093f | 354 | { |
8bb8aefd | 355 | return container_of(inode, struct orangefs_inode_s, vfs_inode); |
f7ab093f MM |
356 | } |
357 | ||
8bb8aefd | 358 | static inline struct orangefs_sb_info_s *ORANGEFS_SB(struct super_block *sb) |
f7ab093f | 359 | { |
8bb8aefd | 360 | return (struct orangefs_sb_info_s *) sb->s_fs_info; |
f7ab093f MM |
361 | } |
362 | ||
363 | /* ino_t descends from "unsigned long", 8 bytes, 64 bits. */ | |
8bb8aefd | 364 | static inline ino_t orangefs_khandle_to_ino(struct orangefs_khandle *khandle) |
f7ab093f MM |
365 | { |
366 | union { | |
367 | unsigned char u[8]; | |
368 | __u64 ino; | |
369 | } ihandle; | |
370 | ||
371 | ihandle.u[0] = khandle->u[0] ^ khandle->u[4]; | |
372 | ihandle.u[1] = khandle->u[1] ^ khandle->u[5]; | |
373 | ihandle.u[2] = khandle->u[2] ^ khandle->u[6]; | |
374 | ihandle.u[3] = khandle->u[3] ^ khandle->u[7]; | |
375 | ihandle.u[4] = khandle->u[12] ^ khandle->u[8]; | |
376 | ihandle.u[5] = khandle->u[13] ^ khandle->u[9]; | |
377 | ihandle.u[6] = khandle->u[14] ^ khandle->u[10]; | |
378 | ihandle.u[7] = khandle->u[15] ^ khandle->u[11]; | |
379 | ||
380 | return ihandle.ino; | |
381 | } | |
382 | ||
8bb8aefd | 383 | static inline struct orangefs_khandle *get_khandle_from_ino(struct inode *inode) |
f7ab093f | 384 | { |
8bb8aefd | 385 | return &(ORANGEFS_I(inode)->refn.khandle); |
f7ab093f MM |
386 | } |
387 | ||
388 | static inline __s32 get_fsid_from_ino(struct inode *inode) | |
389 | { | |
8bb8aefd | 390 | return ORANGEFS_I(inode)->refn.fs_id; |
f7ab093f MM |
391 | } |
392 | ||
393 | static inline ino_t get_ino_from_khandle(struct inode *inode) | |
394 | { | |
8bb8aefd | 395 | struct orangefs_khandle *khandle; |
f7ab093f MM |
396 | ino_t ino; |
397 | ||
398 | khandle = get_khandle_from_ino(inode); | |
8bb8aefd | 399 | ino = orangefs_khandle_to_ino(khandle); |
f7ab093f MM |
400 | return ino; |
401 | } | |
402 | ||
403 | static inline ino_t get_parent_ino_from_dentry(struct dentry *dentry) | |
404 | { | |
405 | return get_ino_from_khandle(dentry->d_parent->d_inode); | |
406 | } | |
407 | ||
408 | static inline int is_root_handle(struct inode *inode) | |
409 | { | |
410 | gossip_debug(GOSSIP_DCACHE_DEBUG, | |
411 | "%s: root handle: %pU, this handle: %pU:\n", | |
412 | __func__, | |
8bb8aefd | 413 | &ORANGEFS_SB(inode->i_sb)->root_khandle, |
f7ab093f MM |
414 | get_khandle_from_ino(inode)); |
415 | ||
8bb8aefd | 416 | if (ORANGEFS_khandle_cmp(&(ORANGEFS_SB(inode->i_sb)->root_khandle), |
f7ab093f MM |
417 | get_khandle_from_ino(inode))) |
418 | return 0; | |
419 | else | |
420 | return 1; | |
421 | } | |
422 | ||
8bb8aefd | 423 | static inline int match_handle(struct orangefs_khandle resp_handle, |
f7ab093f MM |
424 | struct inode *inode) |
425 | { | |
426 | gossip_debug(GOSSIP_DCACHE_DEBUG, | |
427 | "%s: one handle: %pU, another handle:%pU:\n", | |
428 | __func__, | |
429 | &resp_handle, | |
430 | get_khandle_from_ino(inode)); | |
431 | ||
8bb8aefd | 432 | if (ORANGEFS_khandle_cmp(&resp_handle, get_khandle_from_ino(inode))) |
f7ab093f MM |
433 | return 0; |
434 | else | |
435 | return 1; | |
436 | } | |
437 | ||
438 | /* | |
8bb8aefd | 439 | * defined in orangefs-cache.c |
f7ab093f MM |
440 | */ |
441 | int op_cache_initialize(void); | |
442 | int op_cache_finalize(void); | |
8bb8aefd | 443 | struct orangefs_kernel_op_s *op_alloc(__s32 type); |
78699e29 | 444 | void orangefs_new_tag(struct orangefs_kernel_op_s *op); |
8bb8aefd | 445 | char *get_opname_string(struct orangefs_kernel_op_s *new_op); |
f7ab093f | 446 | |
8bb8aefd YL |
447 | int orangefs_inode_cache_initialize(void); |
448 | int orangefs_inode_cache_finalize(void); | |
f7ab093f | 449 | |
f7ab093f | 450 | /* |
8bb8aefd | 451 | * defined in orangefs-mod.c |
f7ab093f MM |
452 | */ |
453 | void purge_inprogress_ops(void); | |
454 | ||
455 | /* | |
456 | * defined in waitqueue.c | |
457 | */ | |
f7ab093f MM |
458 | void purge_waiting_ops(void); |
459 | ||
460 | /* | |
461 | * defined in super.c | |
462 | */ | |
8bb8aefd | 463 | struct dentry *orangefs_mount(struct file_system_type *fst, |
f7ab093f MM |
464 | int flags, |
465 | const char *devname, | |
466 | void *data); | |
467 | ||
8bb8aefd YL |
468 | void orangefs_kill_sb(struct super_block *sb); |
469 | int orangefs_remount(struct super_block *sb); | |
f7ab093f MM |
470 | |
471 | int fsid_key_table_initialize(void); | |
472 | void fsid_key_table_finalize(void); | |
473 | ||
474 | /* | |
475 | * defined in inode.c | |
476 | */ | |
8bb8aefd YL |
477 | __u32 convert_to_orangefs_mask(unsigned long lite_mask); |
478 | struct inode *orangefs_new_inode(struct super_block *sb, | |
f7ab093f MM |
479 | struct inode *dir, |
480 | int mode, | |
481 | dev_t dev, | |
8bb8aefd | 482 | struct orangefs_object_kref *ref); |
f7ab093f | 483 | |
8bb8aefd | 484 | int orangefs_setattr(struct dentry *dentry, struct iattr *iattr); |
f7ab093f | 485 | |
8bb8aefd | 486 | int orangefs_getattr(struct vfsmount *mnt, |
f7ab093f MM |
487 | struct dentry *dentry, |
488 | struct kstat *kstat); | |
489 | ||
933287da MB |
490 | int orangefs_permission(struct inode *inode, int mask); |
491 | ||
f7ab093f MM |
492 | /* |
493 | * defined in xattr.c | |
494 | */ | |
8bb8aefd | 495 | int orangefs_setxattr(struct dentry *dentry, |
f7ab093f MM |
496 | const char *name, |
497 | const void *value, | |
498 | size_t size, | |
499 | int flags); | |
500 | ||
8bb8aefd | 501 | ssize_t orangefs_getxattr(struct dentry *dentry, |
f7ab093f MM |
502 | const char *name, |
503 | void *buffer, | |
504 | size_t size); | |
505 | ||
8bb8aefd | 506 | ssize_t orangefs_listxattr(struct dentry *dentry, char *buffer, size_t size); |
f7ab093f MM |
507 | |
508 | /* | |
509 | * defined in namei.c | |
510 | */ | |
8bb8aefd YL |
511 | struct inode *orangefs_iget(struct super_block *sb, |
512 | struct orangefs_object_kref *ref); | |
f7ab093f | 513 | |
8bb8aefd YL |
514 | ssize_t orangefs_inode_read(struct inode *inode, |
515 | struct iov_iter *iter, | |
516 | loff_t *offset, | |
517 | loff_t readahead_size); | |
f7ab093f MM |
518 | |
519 | /* | |
8bb8aefd | 520 | * defined in devorangefs-req.c |
f7ab093f | 521 | */ |
8bb8aefd YL |
522 | int orangefs_dev_init(void); |
523 | void orangefs_dev_cleanup(void); | |
f7ab093f | 524 | int is_daemon_in_service(void); |
78699e29 | 525 | bool __is_daemon_in_service(void); |
f7ab093f MM |
526 | int fs_mount_pending(__s32 fsid); |
527 | ||
528 | /* | |
8bb8aefd | 529 | * defined in orangefs-utils.c |
f7ab093f | 530 | */ |
8bb8aefd | 531 | __s32 fsid_of_op(struct orangefs_kernel_op_s *op); |
f7ab093f | 532 | |
8bb8aefd | 533 | int orangefs_flush_inode(struct inode *inode); |
f7ab093f | 534 | |
8bb8aefd | 535 | ssize_t orangefs_inode_getxattr(struct inode *inode, |
f7ab093f MM |
536 | const char *prefix, |
537 | const char *name, | |
538 | void *buffer, | |
539 | size_t size); | |
540 | ||
8bb8aefd | 541 | int orangefs_inode_setxattr(struct inode *inode, |
f7ab093f MM |
542 | const char *prefix, |
543 | const char *name, | |
544 | const void *value, | |
545 | size_t size, | |
546 | int flags); | |
547 | ||
99109822 | 548 | int orangefs_inode_getattr(struct inode *inode, __u32 mask, int check); |
f7ab093f | 549 | |
8bb8aefd | 550 | int orangefs_inode_setattr(struct inode *inode, struct iattr *iattr); |
f7ab093f | 551 | |
8bb8aefd | 552 | void orangefs_make_bad_inode(struct inode *inode); |
f7ab093f | 553 | |
8bb8aefd | 554 | int orangefs_unmount_sb(struct super_block *sb); |
f7ab093f | 555 | |
78699e29 | 556 | bool orangefs_cancel_op_in_progress(struct orangefs_kernel_op_s *op); |
f7ab093f | 557 | |
8bb8aefd | 558 | static inline __u64 orangefs_convert_time_field(const struct timespec *ts) |
5714156b AV |
559 | { |
560 | return (__u64)ts->tv_sec; | |
561 | } | |
f7ab093f | 562 | |
8bb8aefd | 563 | int orangefs_normalize_to_errno(__s32 error_code); |
f7ab093f MM |
564 | |
565 | extern struct mutex devreq_mutex; | |
566 | extern struct mutex request_mutex; | |
567 | extern int debug; | |
568 | extern int op_timeout_secs; | |
569 | extern int slot_timeout_secs; | |
8bb8aefd YL |
570 | extern struct list_head orangefs_superblocks; |
571 | extern spinlock_t orangefs_superblocks_lock; | |
572 | extern struct list_head orangefs_request_list; | |
573 | extern spinlock_t orangefs_request_list_lock; | |
574 | extern wait_queue_head_t orangefs_request_list_waitq; | |
f7ab093f MM |
575 | extern struct list_head *htable_ops_in_progress; |
576 | extern spinlock_t htable_ops_in_progress_lock; | |
577 | extern int hash_table_size; | |
578 | ||
8bb8aefd YL |
579 | extern const struct address_space_operations orangefs_address_operations; |
580 | extern struct backing_dev_info orangefs_backing_dev_info; | |
581 | extern struct inode_operations orangefs_file_inode_operations; | |
582 | extern const struct file_operations orangefs_file_operations; | |
583 | extern struct inode_operations orangefs_symlink_inode_operations; | |
584 | extern struct inode_operations orangefs_dir_inode_operations; | |
585 | extern const struct file_operations orangefs_dir_operations; | |
586 | extern const struct dentry_operations orangefs_dentry_operations; | |
587 | extern const struct file_operations orangefs_devreq_file_operations; | |
f7ab093f | 588 | |
8bb8aefd | 589 | extern wait_queue_head_t orangefs_bufmap_init_waitq; |
f7ab093f MM |
590 | |
591 | /* | |
592 | * misc convenience macros | |
593 | */ | |
f7ab093f | 594 | |
8bb8aefd YL |
595 | #define ORANGEFS_OP_INTERRUPTIBLE 1 /* service_operation() is interruptible */ |
596 | #define ORANGEFS_OP_PRIORITY 2 /* service_operation() is high priority */ | |
597 | #define ORANGEFS_OP_CANCELLATION 4 /* this is a cancellation */ | |
adcf34a2 | 598 | #define ORANGEFS_OP_NO_MUTEX 8 /* don't acquire request_mutex */ |
8bb8aefd | 599 | #define ORANGEFS_OP_ASYNC 16 /* Queue it, but don't wait */ |
f7ab093f | 600 | |
8bb8aefd | 601 | int service_operation(struct orangefs_kernel_op_s *op, |
f7ab093f MM |
602 | const char *op_name, |
603 | int flags); | |
604 | ||
f7ab093f | 605 | #define get_interruptible_flag(inode) \ |
8bb8aefd YL |
606 | ((ORANGEFS_SB(inode->i_sb)->flags & ORANGEFS_OPT_INTR) ? \ |
607 | ORANGEFS_OP_INTERRUPTIBLE : 0) | |
f7ab093f | 608 | |
8bb8aefd | 609 | #define add_orangefs_sb(sb) \ |
f7ab093f MM |
610 | do { \ |
611 | gossip_debug(GOSSIP_SUPER_DEBUG, \ | |
8bb8aefd YL |
612 | "Adding SB %p to orangefs superblocks\n", \ |
613 | ORANGEFS_SB(sb)); \ | |
614 | spin_lock(&orangefs_superblocks_lock); \ | |
615 | list_add_tail(&ORANGEFS_SB(sb)->list, &orangefs_superblocks); \ | |
616 | spin_unlock(&orangefs_superblocks_lock); \ | |
f7ab093f MM |
617 | } while (0) |
618 | ||
8bb8aefd | 619 | #define remove_orangefs_sb(sb) \ |
f7ab093f MM |
620 | do { \ |
621 | struct list_head *tmp = NULL; \ | |
622 | struct list_head *tmp_safe = NULL; \ | |
8bb8aefd | 623 | struct orangefs_sb_info_s *orangefs_sb = NULL; \ |
f7ab093f | 624 | \ |
8bb8aefd YL |
625 | spin_lock(&orangefs_superblocks_lock); \ |
626 | list_for_each_safe(tmp, tmp_safe, &orangefs_superblocks) { \ | |
627 | orangefs_sb = list_entry(tmp, \ | |
628 | struct orangefs_sb_info_s, \ | |
f7ab093f | 629 | list); \ |
8bb8aefd | 630 | if (orangefs_sb && (orangefs_sb->sb == sb)) { \ |
f7ab093f | 631 | gossip_debug(GOSSIP_SUPER_DEBUG, \ |
8bb8aefd YL |
632 | "Removing SB %p from orangefs superblocks\n", \ |
633 | orangefs_sb); \ | |
634 | list_del(&orangefs_sb->list); \ | |
f7ab093f MM |
635 | break; \ |
636 | } \ | |
637 | } \ | |
8bb8aefd | 638 | spin_unlock(&orangefs_superblocks_lock); \ |
f7ab093f MM |
639 | } while (0) |
640 | ||
8bb8aefd YL |
641 | #define orangefs_lock_inode(inode) spin_lock(&inode->i_lock) |
642 | #define orangefs_unlock_inode(inode) spin_unlock(&inode->i_lock) | |
f7ab093f MM |
643 | |
644 | #define fill_default_sys_attrs(sys_attr, type, mode) \ | |
645 | do { \ | |
646 | sys_attr.owner = from_kuid(current_user_ns(), current_fsuid()); \ | |
647 | sys_attr.group = from_kgid(current_user_ns(), current_fsgid()); \ | |
648 | sys_attr.size = 0; \ | |
8bb8aefd | 649 | sys_attr.perms = ORANGEFS_util_translate_mode(mode); \ |
f7ab093f | 650 | sys_attr.objtype = type; \ |
8bb8aefd | 651 | sys_attr.mask = ORANGEFS_ATTR_SYS_ALL_SETABLE; \ |
f7ab093f MM |
652 | } while (0) |
653 | ||
8bb8aefd | 654 | #define orangefs_inode_lock(__i) mutex_lock(&(__i)->i_mutex) |
f7ab093f | 655 | |
8bb8aefd | 656 | #define orangefs_inode_unlock(__i) mutex_unlock(&(__i)->i_mutex) |
f7ab093f | 657 | |
8bb8aefd | 658 | static inline void orangefs_i_size_write(struct inode *inode, loff_t i_size) |
f7ab093f MM |
659 | { |
660 | #if BITS_PER_LONG == 32 && defined(CONFIG_SMP) | |
eb57bcc2 | 661 | orangefs_inode_lock(inode); |
f7ab093f MM |
662 | #endif |
663 | i_size_write(inode, i_size); | |
664 | #if BITS_PER_LONG == 32 && defined(CONFIG_SMP) | |
8bb8aefd | 665 | orangefs_inode_unlock(inode); |
f7ab093f MM |
666 | #endif |
667 | } | |
668 | ||
669 | static inline unsigned int diff(struct timeval *end, struct timeval *begin) | |
670 | { | |
671 | if (end->tv_usec < begin->tv_usec) { | |
672 | end->tv_usec += 1000000; | |
673 | end->tv_sec--; | |
674 | } | |
675 | end->tv_sec -= begin->tv_sec; | |
676 | end->tv_usec -= begin->tv_usec; | |
677 | return (end->tv_sec * 1000000) + end->tv_usec; | |
678 | } | |
679 | ||
8bb8aefd | 680 | #endif /* __ORANGEFSKERNEL_H */ |