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805e021f CE |
1 | |
2 | /* | |
3 | * Copyright 2000, International Business Machines Corporation and others. | |
4 | * All Rights Reserved. | |
5 | * | |
6 | * This software has been released under the terms of the IBM Public | |
7 | * License. For details, see the LICENSE file in the top-level source | |
8 | * directory or online at http://www.openafs.org/dl/license10.html | |
9 | */ | |
10 | ||
11 | /* | |
12 | * User space client specific interface glue | |
13 | */ | |
14 | ||
15 | #include <afsconfig.h> | |
16 | #include "afs/param.h" | |
17 | ||
18 | #ifdef UKERNEL | |
19 | ||
20 | #include "afs/sysincludes.h" /* Standard vendor system headers */ | |
21 | #include <net/if.h> | |
22 | ||
23 | #include "afsincludes.h" /* Afs-based standard headers */ | |
24 | #include "afs_usrops.h" | |
25 | #include "afs/afs_stats.h" | |
26 | #include "afs/auth.h" | |
27 | #include "afs/cellconfig.h" | |
28 | #include "afs/vice.h" | |
29 | #include "afs/afsutil.h" | |
30 | #include "afs/afs_bypasscache.h" | |
31 | #include "rx/rx_globals.h" | |
32 | #include "afsd/afsd.h" | |
33 | ||
34 | #define VFS 1 | |
35 | #undef VIRTUE | |
36 | #undef VICE | |
37 | ||
38 | #ifndef AFS_CACHE_VNODE_PATH | |
39 | #error You must compile UKERNEL code with -DAFS_CACHE_VNODE_PATH | |
40 | #endif | |
41 | ||
42 | #define CACHEINFOFILE "cacheinfo" | |
43 | #define AFSLOGFILE "AFSLog" | |
44 | #define DCACHEFILE "CacheItems" | |
45 | #define VOLINFOFILE "VolumeItems" | |
46 | #define CELLINFOFILE "CellItems" | |
47 | #define MAXIPADDRS 64 | |
48 | ||
49 | #ifndef MIN | |
50 | #define MIN(A,B) ((A)<(B)?(A):(B)) | |
51 | #endif | |
52 | #ifndef MAX | |
53 | #define MAX(A,B) ((A)>(B)?(A):(B)) | |
54 | #endif | |
55 | ||
56 | extern int cacheDiskType; | |
57 | ||
58 | char afs_LclCellName[64]; | |
59 | ||
60 | static struct usr_vnode *afs_FileTable[MAX_OSI_FILES]; | |
61 | static int afs_FileFlags[MAX_OSI_FILES]; | |
62 | static off_t afs_FileOffsets[MAX_OSI_FILES]; | |
63 | ||
64 | #define MAX_CACHE_LOOPS 4 | |
65 | ||
66 | static struct usr_vfs afs_RootVfs; | |
67 | static struct usr_vnode *afs_RootVnode = NULL; | |
68 | static struct usr_vnode *afs_CurrentDir = NULL; | |
69 | ||
70 | static char afs_mountDir[1024]; /* AFS mount point */ | |
71 | static int afs_mountDirLen; /* strlen of AFS mount point */ | |
72 | ||
73 | struct afsconf_dir *afs_cdir; /* config dir */ | |
74 | ||
75 | int afs_bufferpages = 100; | |
76 | ||
77 | static usr_key_t afs_global_u_key; | |
78 | ||
79 | static struct usr_proc *afs_global_procp = NULL; | |
80 | static struct usr_ucred *afs_global_ucredp = NULL; | |
81 | ||
82 | struct usr_ucred afs_osi_cred, *afs_osi_credp; | |
83 | usr_mutex_t afs_global_lock; | |
84 | usr_thread_t afs_global_owner; | |
85 | usr_mutex_t rx_global_lock; | |
86 | usr_thread_t rx_global_owner; | |
87 | ||
88 | static usr_mutex_t osi_dummy_lock; | |
89 | static usr_mutex_t osi_waitq_lock; | |
90 | static usr_mutex_t osi_authenticate_lock; | |
91 | afs_lock_t afs_ftf; | |
92 | afs_lock_t osi_flplock; | |
93 | afs_lock_t osi_fsplock; | |
94 | ||
95 | /* | |
96 | * Mutex and condition variable used to implement sleep | |
97 | */ | |
98 | pthread_mutex_t usr_sleep_mutex; | |
99 | pthread_cond_t usr_sleep_cond; | |
100 | ||
101 | int call_syscall(long, long, long, long, long, long); | |
102 | int fork_syscall(long, long, long, long, long, long); | |
103 | ||
104 | ||
105 | /* | |
106 | * Hash table mapping addresses onto wait structures for | |
107 | * osi_Sleep/osi_Wakeup and osi_Wait/osi_Wakeup | |
108 | */ | |
109 | typedef struct osi_wait { | |
110 | caddr_t addr; | |
111 | usr_cond_t cond; | |
112 | int flag; | |
113 | struct osi_wait *next; | |
114 | struct osi_wait *prev; | |
115 | time_t expiration; | |
116 | struct osi_wait *timedNext; | |
117 | struct osi_wait *timedPrev; | |
118 | } osi_wait_t; | |
119 | ||
120 | /* | |
121 | * Head of the linked list of available waitq structures. | |
122 | */ | |
123 | static osi_wait_t *osi_waithash_avail; | |
124 | ||
125 | /* | |
126 | * List of timed waits, NSAPI does not provide a cond_timed | |
127 | * wait, so we need to keep track of the timed waits ourselves and | |
128 | * periodically check for expirations | |
129 | */ | |
130 | static osi_wait_t *osi_timedwait_head; | |
131 | static osi_wait_t *osi_timedwait_tail; | |
132 | ||
133 | static struct { | |
134 | osi_wait_t *head; | |
135 | osi_wait_t *tail; | |
136 | } osi_waithash_table[OSI_WAITHASH_SIZE]; | |
137 | ||
138 | /* | |
139 | * Never call afs_brelse | |
140 | */ | |
141 | int | |
142 | ufs_brelse(struct usr_vnode *vp, struct usr_buf *bp) | |
143 | { | |
144 | usr_assert(0); | |
145 | return 0; | |
146 | } | |
147 | ||
148 | /* | |
149 | * I am not sure what to do with these, they assert for now | |
150 | */ | |
151 | int | |
152 | iodone(struct usr_buf *bp) | |
153 | { | |
154 | usr_assert(0); | |
155 | return 0; | |
156 | } | |
157 | ||
158 | struct usr_file * | |
159 | getf(int fd) | |
160 | { | |
161 | usr_assert(0); | |
162 | return 0; | |
163 | } | |
164 | ||
165 | /* | |
166 | * Every user is a super user | |
167 | */ | |
168 | int | |
169 | afs_osi_suser(void *credp) | |
170 | { | |
171 | return 1; | |
172 | } | |
173 | ||
174 | int | |
175 | afs_suser(void *credp) | |
176 | { | |
177 | return 1; | |
178 | } | |
179 | ||
180 | /* | |
181 | * These are no-ops in user space | |
182 | */ | |
183 | ||
184 | /* | |
185 | * xflock should never fall through, the only files we know | |
186 | * about are AFS files | |
187 | */ | |
188 | int | |
189 | usr_flock(void) | |
190 | { | |
191 | usr_assert(0); | |
192 | return 0; | |
193 | } | |
194 | ||
195 | /* | |
196 | * ioctl should never fall through, the only files we know | |
197 | * about are AFS files | |
198 | */ | |
199 | int | |
200 | usr_ioctl(void) | |
201 | { | |
202 | usr_assert(0); | |
203 | return 0; | |
204 | } | |
205 | ||
206 | /* | |
207 | * We do not support the inode related system calls | |
208 | */ | |
209 | int | |
210 | afs_syscall_icreate(long a, long b, long c, long d, long e, long f) | |
211 | { | |
212 | usr_assert(0); | |
213 | return 0; | |
214 | } | |
215 | ||
216 | int | |
217 | afs_syscall_iincdec(int dev, int inode, int inode_p1, int amount) | |
218 | { | |
219 | usr_assert(0); | |
220 | return 0; | |
221 | } | |
222 | ||
223 | int | |
224 | afs_syscall_iopen(int dev, int inode, int usrmod) | |
225 | { | |
226 | usr_assert(0); | |
227 | return 0; | |
228 | } | |
229 | ||
230 | int | |
231 | afs_syscall_ireadwrite(void) | |
232 | { | |
233 | usr_assert(0); | |
234 | return 0; | |
235 | } | |
236 | ||
237 | /* | |
238 | * these routines are referenced in the vfsops structure, but | |
239 | * should never get called | |
240 | */ | |
241 | int | |
242 | vno_close(void) | |
243 | { | |
244 | usr_assert(0); | |
245 | return 0; | |
246 | } | |
247 | ||
248 | int | |
249 | vno_ioctl(void) | |
250 | { | |
251 | usr_assert(0); | |
252 | return 0; | |
253 | } | |
254 | ||
255 | int | |
256 | vno_rw(void) | |
257 | { | |
258 | usr_assert(0); | |
259 | return 0; | |
260 | } | |
261 | ||
262 | int | |
263 | vno_select(void) | |
264 | { | |
265 | usr_assert(0); | |
266 | return 0; | |
267 | } | |
268 | ||
269 | /* | |
270 | * uiomove copies data between kernel buffers and uio buffers | |
271 | */ | |
272 | int | |
273 | usr_uiomove(char *kbuf, int n, int rw, struct usr_uio *uio) | |
274 | { | |
275 | int nio; | |
276 | int len; | |
277 | char *ptr; | |
278 | struct iovec *iovp; | |
279 | ||
280 | nio = uio->uio_iovcnt; | |
281 | iovp = uio->uio_iov; | |
282 | ||
283 | if (nio <= 0) | |
284 | return EFAULT; | |
285 | ||
286 | /* | |
287 | * copy the data | |
288 | */ | |
289 | ptr = kbuf; | |
290 | while (nio > 0 && n > 0) { | |
291 | len = MIN(n, iovp->iov_len); | |
292 | if (rw == UIO_READ) { | |
293 | memcpy(iovp->iov_base, ptr, len); | |
294 | } else { | |
295 | memcpy(ptr, iovp->iov_base, len); | |
296 | } | |
297 | n -= len; | |
298 | ptr += len; | |
299 | uio->uio_resid -= len; | |
300 | uio->uio_offset += len; | |
301 | iovp->iov_base = (char *)(iovp->iov_base) + len; | |
302 | iovp->iov_len -= len; | |
303 | iovp++; | |
304 | nio--; | |
305 | } | |
306 | ||
307 | if (n > 0) | |
308 | return EFAULT; | |
309 | return 0; | |
310 | } | |
311 | ||
312 | /* | |
313 | * routines to manage user credentials | |
314 | */ | |
315 | struct usr_ucred * | |
316 | usr_crcopy(struct usr_ucred *credp) | |
317 | { | |
318 | struct usr_ucred *newcredp; | |
319 | ||
320 | newcredp = afs_osi_Alloc(sizeof(struct usr_ucred)); | |
321 | *newcredp = *credp; | |
322 | newcredp->cr_ref = 1; | |
323 | return newcredp; | |
324 | } | |
325 | ||
326 | struct usr_ucred * | |
327 | usr_crget(void) | |
328 | { | |
329 | struct usr_ucred *newcredp; | |
330 | ||
331 | newcredp = afs_osi_Alloc(sizeof(struct usr_ucred)); | |
332 | newcredp->cr_ref = 1; | |
333 | return newcredp; | |
334 | } | |
335 | ||
336 | int | |
337 | usr_crfree(struct usr_ucred *credp) | |
338 | { | |
339 | credp->cr_ref--; | |
340 | if (credp->cr_ref == 0) { | |
341 | afs_osi_Free((char *)credp, sizeof(struct usr_ucred)); | |
342 | } | |
343 | return 0; | |
344 | } | |
345 | ||
346 | int | |
347 | usr_crhold(struct usr_ucred *credp) | |
348 | { | |
349 | credp->cr_ref++; | |
350 | return 0; | |
351 | } | |
352 | ||
353 | void | |
354 | usr_vattr_null(struct usr_vattr *vap) | |
355 | { | |
356 | int n; | |
357 | char *cp; | |
358 | ||
359 | n = sizeof(struct usr_vattr); | |
360 | cp = (char *)vap; | |
361 | while (n--) { | |
362 | *cp++ = -1; | |
363 | } | |
364 | } | |
365 | ||
366 | /* | |
367 | * Initialize the thread specific data used to simulate the | |
368 | * kernel environment for each thread. The user structure | |
369 | * is stored in the thread specific data. | |
370 | */ | |
371 | void | |
372 | uafs_InitThread(void) | |
373 | { | |
374 | int st; | |
375 | struct usr_user *uptr; | |
376 | ||
377 | /* | |
378 | * initialize the thread specific user structure. Use malloc to | |
379 | * allocate the data block, so pthread_finish can free the buffer | |
380 | * when this thread terminates. | |
381 | */ | |
382 | uptr = malloc(sizeof(struct usr_user) + sizeof(struct usr_ucred)); | |
383 | usr_assert(uptr != NULL); | |
384 | uptr->u_error = 0; | |
385 | uptr->u_prio = 0; | |
386 | uptr->u_procp = afs_global_procp; | |
387 | uptr->u_cred = (struct usr_ucred *)(uptr + 1); | |
388 | *uptr->u_cred = *afs_global_ucredp; | |
389 | st = usr_setspecific(afs_global_u_key, (void *)uptr); | |
390 | usr_assert(st == 0); | |
391 | } | |
392 | ||
393 | /* | |
394 | * routine to get the user structure from the thread specific data. | |
395 | * this routine is used to implement the global 'u' structure. Initializes | |
396 | * the thread if needed. | |
397 | */ | |
398 | struct usr_user * | |
399 | get_user_struct(void) | |
400 | { | |
401 | struct usr_user *uptr; | |
402 | int st; | |
403 | ||
404 | st = usr_getspecific(afs_global_u_key, &uptr); | |
405 | usr_assert(st == 0); | |
406 | if (uptr == NULL) { | |
407 | uafs_InitThread(); | |
408 | st = usr_getspecific(afs_global_u_key, &uptr); | |
409 | usr_assert(st == 0); | |
410 | usr_assert(uptr != NULL); | |
411 | } | |
412 | return uptr; | |
413 | } | |
414 | ||
415 | /* | |
416 | * Hash an address for the waithash table | |
417 | */ | |
418 | #define WAITHASH(X) \ | |
419 | (((long)(X)^((long)(X)>>4)^((long)(X)<<4))&(OSI_WAITHASH_SIZE-1)) | |
420 | ||
421 | /* | |
422 | * Sleep on an event | |
423 | */ | |
424 | void | |
425 | afs_osi_Sleep(void *x) | |
426 | { | |
427 | int index; | |
428 | osi_wait_t *waitp; | |
429 | int glockOwner = ISAFS_GLOCK(); | |
430 | ||
431 | usr_mutex_lock(&osi_waitq_lock); | |
432 | if (glockOwner) { | |
433 | AFS_GUNLOCK(); | |
434 | } | |
435 | index = WAITHASH(x); | |
436 | if (osi_waithash_avail == NULL) { | |
437 | waitp = afs_osi_Alloc(sizeof(osi_wait_t)); | |
438 | usr_cond_init(&waitp->cond); | |
439 | } else { | |
440 | waitp = osi_waithash_avail; | |
441 | osi_waithash_avail = osi_waithash_avail->next; | |
442 | } | |
443 | waitp->addr = x; | |
444 | waitp->flag = 0; | |
445 | DLL_INSERT_TAIL(waitp, osi_waithash_table[index].head, | |
446 | osi_waithash_table[index].tail, next, prev); | |
447 | waitp->expiration = 0; | |
448 | waitp->timedNext = NULL; | |
449 | waitp->timedPrev = NULL; | |
450 | while (waitp->flag == 0) { | |
451 | usr_cond_wait(&waitp->cond, &osi_waitq_lock); | |
452 | } | |
453 | DLL_DELETE(waitp, osi_waithash_table[index].head, | |
454 | osi_waithash_table[index].tail, next, prev); | |
455 | waitp->next = osi_waithash_avail; | |
456 | osi_waithash_avail = waitp; | |
457 | usr_mutex_unlock(&osi_waitq_lock); | |
458 | if (glockOwner) { | |
459 | AFS_GLOCK(); | |
460 | } | |
461 | } | |
462 | ||
463 | int | |
464 | afs_osi_SleepSig(void *x) | |
465 | { | |
466 | afs_osi_Sleep(x); | |
467 | return 0; | |
468 | } | |
469 | ||
470 | int | |
471 | afs_osi_Wakeup(void *x) | |
472 | { | |
473 | int index; | |
474 | osi_wait_t *waitp; | |
475 | ||
476 | index = WAITHASH(x); | |
477 | usr_mutex_lock(&osi_waitq_lock); | |
478 | waitp = osi_waithash_table[index].head; | |
479 | while (waitp) { | |
480 | if (waitp->addr == x && waitp->flag == 0) { | |
481 | waitp->flag = 1; | |
482 | usr_cond_signal(&waitp->cond); | |
483 | } | |
484 | waitp = waitp->next; | |
485 | } | |
486 | usr_mutex_unlock(&osi_waitq_lock); | |
487 | return 0; | |
488 | } | |
489 | ||
490 | int | |
491 | afs_osi_TimedSleep(void *event, afs_int32 ams, int aintok) | |
492 | { | |
493 | return afs_osi_Wait(ams, event, aintok); | |
494 | } | |
495 | ||
496 | int | |
497 | afs_osi_Wait(afs_int32 msec, struct afs_osi_WaitHandle *handle, int intok) | |
498 | { | |
499 | int index; | |
500 | osi_wait_t *waitp; | |
501 | struct timespec tv; | |
502 | int ret; | |
503 | int glockOwner = ISAFS_GLOCK(); | |
504 | ||
505 | tv.tv_sec = msec / 1000; | |
506 | tv.tv_nsec = (msec % 1000) * 1000000; | |
507 | if (handle == NULL) { | |
508 | if (glockOwner) { | |
509 | AFS_GUNLOCK(); | |
510 | } | |
511 | usr_thread_sleep(&tv); | |
512 | ret = 0; | |
513 | if (glockOwner) { | |
514 | AFS_GLOCK(); | |
515 | } | |
516 | } else { | |
517 | usr_mutex_lock(&osi_waitq_lock); | |
518 | if (glockOwner) { | |
519 | AFS_GUNLOCK(); | |
520 | } | |
521 | index = WAITHASH((caddr_t) handle); | |
522 | if (osi_waithash_avail == NULL) { | |
523 | waitp = afs_osi_Alloc(sizeof(osi_wait_t)); | |
524 | usr_cond_init(&waitp->cond); | |
525 | } else { | |
526 | waitp = osi_waithash_avail; | |
527 | osi_waithash_avail = osi_waithash_avail->next; | |
528 | } | |
529 | waitp->addr = (caddr_t) handle; | |
530 | waitp->flag = 0; | |
531 | DLL_INSERT_TAIL(waitp, osi_waithash_table[index].head, | |
532 | osi_waithash_table[index].tail, next, prev); | |
533 | tv.tv_sec += time(NULL); | |
534 | waitp->expiration = tv.tv_sec + ((tv.tv_nsec == 0) ? 0 : 1); | |
535 | DLL_INSERT_TAIL(waitp, osi_timedwait_head, osi_timedwait_tail, | |
536 | timedNext, timedPrev); | |
537 | usr_cond_wait(&waitp->cond, &osi_waitq_lock); | |
538 | if (waitp->flag) { | |
539 | ret = 2; | |
540 | } else { | |
541 | ret = 0; | |
542 | } | |
543 | DLL_DELETE(waitp, osi_waithash_table[index].head, | |
544 | osi_waithash_table[index].tail, next, prev); | |
545 | DLL_DELETE(waitp, osi_timedwait_head, osi_timedwait_tail, timedNext, | |
546 | timedPrev); | |
547 | waitp->next = osi_waithash_avail; | |
548 | osi_waithash_avail = waitp; | |
549 | usr_mutex_unlock(&osi_waitq_lock); | |
550 | if (glockOwner) { | |
551 | AFS_GLOCK(); | |
552 | } | |
553 | } | |
554 | return ret; | |
555 | } | |
556 | ||
557 | void | |
558 | afs_osi_CancelWait(struct afs_osi_WaitHandle *handle) | |
559 | { | |
560 | afs_osi_Wakeup(handle); | |
561 | } | |
562 | ||
563 | /* | |
564 | * Netscape NSAPI doesn't have a cond_timed_wait, so we need | |
565 | * to explicitly signal cond_timed_waits when their timers expire | |
566 | */ | |
567 | int | |
568 | afs_osi_CheckTimedWaits(void) | |
569 | { | |
570 | time_t curTime; | |
571 | osi_wait_t *waitp; | |
572 | ||
573 | curTime = time(NULL); | |
574 | usr_mutex_lock(&osi_waitq_lock); | |
575 | waitp = osi_timedwait_head; | |
576 | while (waitp != NULL) { | |
577 | usr_assert(waitp->expiration != 0); | |
578 | if (waitp->expiration <= curTime) { | |
579 | waitp->flag = 1; | |
580 | usr_cond_signal(&waitp->cond); | |
581 | } | |
582 | waitp = waitp->timedNext; | |
583 | } | |
584 | usr_mutex_unlock(&osi_waitq_lock); | |
585 | return 0; | |
586 | } | |
587 | ||
588 | /* | |
589 | * 'dummy' vnode, for non-AFS files. We don't actually need most vnode | |
590 | * information for non-AFS files, so point all of them towards this vnode | |
591 | * to save memory. | |
592 | */ | |
593 | static struct usr_vnode dummy_vnode = { | |
594 | 0, /* v_flag */ | |
595 | 1024, /* v_count */ | |
596 | NULL, /* v_op */ | |
597 | NULL, /* v_vfsp */ | |
598 | 0, /* v_type */ | |
599 | 0, /* v_rdev */ | |
600 | NULL /* v_data */ | |
601 | }; | |
602 | ||
603 | /* | |
604 | * Allocate a slot in the file table if there is not one there already, | |
605 | * copy in the file name and kludge up the vnode and inode structures | |
606 | */ | |
607 | int | |
608 | lookupname(char *fnamep, int segflg, int followlink, | |
609 | struct usr_vnode **compvpp) | |
610 | { | |
611 | int code; | |
612 | ||
613 | /* | |
614 | * Assume relative pathnames refer to files in AFS | |
615 | */ | |
616 | if (*fnamep != '/' || uafs_afsPathName(fnamep) != NULL) { | |
617 | AFS_GLOCK(); | |
618 | code = uafs_LookupName(fnamep, afs_CurrentDir, compvpp, 0, 0); | |
619 | AFS_GUNLOCK(); | |
620 | return code; | |
621 | } | |
622 | ||
623 | /* For non-afs files, nobody really looks at the meaningful values in the | |
624 | * returned vnode, so we can return a 'fake' one. The vnode can be held, | |
625 | * released, etc. and some callers check for a NULL vnode anyway, so we | |
626 | * to return something. */ | |
627 | ||
628 | usr_mutex_lock(&osi_dummy_lock); | |
629 | VN_HOLD(&dummy_vnode); | |
630 | usr_mutex_unlock(&osi_dummy_lock); | |
631 | ||
632 | *compvpp = &dummy_vnode; | |
633 | ||
634 | return 0; | |
635 | } | |
636 | ||
637 | /* | |
638 | * open a file given its i-node number | |
639 | */ | |
640 | void * | |
641 | osi_UFSOpen(afs_dcache_id_t *ino) | |
642 | { | |
643 | int rc; | |
644 | struct osi_file *fp; | |
645 | struct stat st; | |
646 | ||
647 | AFS_ASSERT_GLOCK(); | |
648 | ||
649 | AFS_GUNLOCK(); | |
650 | fp = afs_osi_Alloc(sizeof(struct osi_file)); | |
651 | usr_assert(fp != NULL); | |
652 | ||
653 | usr_assert(ino->ufs); | |
654 | ||
655 | fp->fd = open(ino->ufs, O_RDWR | O_CREAT, 0); | |
656 | if (fp->fd < 0) { | |
657 | get_user_struct()->u_error = errno; | |
658 | afs_osi_Free((char *)fp, sizeof(struct osi_file)); | |
659 | AFS_GLOCK(); | |
660 | return NULL; | |
661 | } | |
662 | rc = fstat(fp->fd, &st); | |
663 | if (rc < 0) { | |
664 | get_user_struct()->u_error = errno; | |
665 | afs_osi_Free((void *)fp, sizeof(struct osi_file)); | |
666 | AFS_GLOCK(); | |
667 | return NULL; | |
668 | } | |
669 | fp->size = st.st_size; | |
670 | fp->offset = 0; | |
671 | fp->vnode = (struct usr_vnode *)fp; | |
672 | ||
673 | AFS_GLOCK(); | |
674 | return fp; | |
675 | } | |
676 | ||
677 | int | |
678 | osi_UFSClose(struct osi_file *fp) | |
679 | { | |
680 | int rc; | |
681 | ||
682 | AFS_ASSERT_GLOCK(); | |
683 | ||
684 | AFS_GUNLOCK(); | |
685 | rc = close(fp->fd); | |
686 | if (rc < 0) { | |
687 | get_user_struct()->u_error = errno; | |
688 | afs_osi_Free((void *)fp, sizeof(struct osi_file)); | |
689 | AFS_GLOCK(); | |
690 | return -1; | |
691 | } | |
692 | afs_osi_Free((void *)fp, sizeof(struct osi_file)); | |
693 | AFS_GLOCK(); | |
694 | return 0; | |
695 | } | |
696 | ||
697 | int | |
698 | osi_UFSTruncate(struct osi_file *fp, afs_int32 len) | |
699 | { | |
700 | int rc; | |
701 | ||
702 | AFS_ASSERT_GLOCK(); | |
703 | ||
704 | AFS_GUNLOCK(); | |
705 | rc = ftruncate(fp->fd, len); | |
706 | if (rc < 0) { | |
707 | get_user_struct()->u_error = errno; | |
708 | AFS_GLOCK(); | |
709 | return -1; | |
710 | } | |
711 | fp->size = len; | |
712 | AFS_GLOCK(); | |
713 | return 0; | |
714 | } | |
715 | ||
716 | int | |
717 | afs_osi_Read(struct osi_file *fp, int offset, void *buf, afs_int32 len) | |
718 | { | |
719 | int rc, ret; | |
720 | struct stat st; | |
721 | ||
722 | AFS_ASSERT_GLOCK(); | |
723 | ||
724 | AFS_GUNLOCK(); | |
725 | if (offset >= 0) { | |
726 | rc = lseek(fp->fd, offset, SEEK_SET); | |
727 | } else { | |
728 | rc = lseek(fp->fd, fp->offset, SEEK_SET); | |
729 | } | |
730 | if (rc < 0) { | |
731 | get_user_struct()->u_error = errno; | |
732 | AFS_GLOCK(); | |
733 | return -1; | |
734 | } | |
735 | fp->offset = rc; | |
736 | ret = read(fp->fd, buf, len); | |
737 | if (ret < 0) { | |
738 | get_user_struct()->u_error = errno; | |
739 | AFS_GLOCK(); | |
740 | return -1; | |
741 | } | |
742 | fp->offset += ret; | |
743 | rc = fstat(fp->fd, &st); | |
744 | if (rc < 0) { | |
745 | get_user_struct()->u_error = errno; | |
746 | AFS_GLOCK(); | |
747 | return -1; | |
748 | } | |
749 | fp->size = st.st_size; | |
750 | AFS_GLOCK(); | |
751 | return ret; | |
752 | } | |
753 | ||
754 | int | |
755 | afs_osi_Write(struct osi_file *fp, afs_int32 offset, void *buf, afs_int32 len) | |
756 | { | |
757 | int rc, ret; | |
758 | struct stat st; | |
759 | ||
760 | AFS_ASSERT_GLOCK(); | |
761 | ||
762 | AFS_GUNLOCK(); | |
763 | if (offset >= 0) { | |
764 | rc = lseek(fp->fd, offset, SEEK_SET); | |
765 | } else { | |
766 | rc = lseek(fp->fd, fp->offset, SEEK_SET); | |
767 | } | |
768 | if (rc < 0) { | |
769 | get_user_struct()->u_error = errno; | |
770 | AFS_GLOCK(); | |
771 | return -1; | |
772 | } | |
773 | fp->offset = rc; | |
774 | ret = write(fp->fd, buf, len); | |
775 | if (ret < 0) { | |
776 | get_user_struct()->u_error = errno; | |
777 | AFS_GLOCK(); | |
778 | return -1; | |
779 | } | |
780 | fp->offset += ret; | |
781 | rc = fstat(fp->fd, &st); | |
782 | if (rc < 0) { | |
783 | get_user_struct()->u_error = errno; | |
784 | AFS_GLOCK(); | |
785 | return -1; | |
786 | } | |
787 | fp->size = st.st_size; | |
788 | AFS_GLOCK(); | |
789 | return ret; | |
790 | } | |
791 | ||
792 | int | |
793 | afs_osi_Stat(struct osi_file *fp, struct osi_stat *stp) | |
794 | { | |
795 | int rc; | |
796 | struct stat st; | |
797 | ||
798 | AFS_GUNLOCK(); | |
799 | rc = fstat(fp->fd, &st); | |
800 | if (rc < 0) { | |
801 | get_user_struct()->u_error = errno; | |
802 | AFS_GLOCK(); | |
803 | return -1; | |
804 | } | |
805 | stp->size = st.st_size; | |
806 | stp->mtime = st.st_mtime; | |
807 | stp->atime = st.st_atime; | |
808 | AFS_GLOCK(); | |
809 | return 0; | |
810 | } | |
811 | ||
812 | /* | |
813 | * VOP_RDWR routine | |
814 | */ | |
815 | int | |
816 | afs_osi_VOP_RDWR(struct usr_vnode *vnodeP, struct usr_uio *uioP, int rw, | |
817 | int flags, struct usr_ucred *credP) | |
818 | { | |
819 | int rc; | |
820 | struct osi_file *fp = (struct osi_file *)vnodeP; | |
821 | ||
822 | /* | |
823 | * We don't support readv/writev. | |
824 | */ | |
825 | usr_assert(uioP->uio_iovcnt == 1); | |
826 | usr_assert(uioP->uio_resid == uioP->uio_iov[0].iov_len); | |
827 | ||
828 | if (rw == UIO_WRITE) { | |
829 | usr_assert(uioP->uio_fmode == FWRITE); | |
830 | rc = afs_osi_Write(fp, uioP->uio_offset, uioP->uio_iov[0].iov_base, | |
831 | uioP->uio_iov[0].iov_len); | |
832 | } else { | |
833 | usr_assert(uioP->uio_fmode == FREAD); | |
834 | rc = afs_osi_Read(fp, uioP->uio_offset, uioP->uio_iov[0].iov_base, | |
835 | uioP->uio_iov[0].iov_len); | |
836 | } | |
837 | if (rc < 0) { | |
838 | return get_user_struct()->u_error; | |
839 | } | |
840 | ||
841 | uioP->uio_resid -= rc; | |
842 | uioP->uio_offset += rc; | |
843 | uioP->uio_iov[0].iov_base = (char *)(uioP->uio_iov[0].iov_base) + rc; | |
844 | uioP->uio_iov[0].iov_len -= rc; | |
845 | return 0; | |
846 | } | |
847 | ||
848 | void * | |
849 | afs_osi_Alloc(size_t size) | |
850 | { | |
851 | return malloc(size); | |
852 | } | |
853 | ||
854 | void | |
855 | afs_osi_Free(void *ptr, size_t size) | |
856 | { | |
857 | free(ptr); | |
858 | } | |
859 | ||
860 | void | |
861 | afs_osi_FreeStr(char *ptr) | |
862 | { | |
863 | free(ptr); | |
864 | } | |
865 | ||
866 | void * | |
867 | osi_AllocLargeSpace(size_t size) | |
868 | { | |
869 | AFS_STATCNT(osi_AllocLargeSpace); | |
870 | return afs_osi_Alloc(size); | |
871 | } | |
872 | ||
873 | void | |
874 | osi_FreeLargeSpace(void *ptr) | |
875 | { | |
876 | AFS_STATCNT(osi_FreeLargeSpace); | |
877 | afs_osi_Free(ptr, 0); | |
878 | } | |
879 | ||
880 | void * | |
881 | osi_AllocSmallSpace(size_t size) | |
882 | { | |
883 | AFS_STATCNT(osi_AllocSmallSpace); | |
884 | return afs_osi_Alloc(size); | |
885 | } | |
886 | ||
887 | void | |
888 | osi_FreeSmallSpace(void *ptr) | |
889 | { | |
890 | AFS_STATCNT(osi_FreeSmallSpace); | |
891 | afs_osi_Free(ptr, 0); | |
892 | } | |
893 | ||
894 | void | |
895 | shutdown_osi(void) | |
896 | { | |
897 | AFS_STATCNT(shutdown_osi); | |
898 | return; | |
899 | } | |
900 | ||
901 | void | |
902 | shutdown_osinet(void) | |
903 | { | |
904 | AFS_STATCNT(shutdown_osinet); | |
905 | return; | |
906 | } | |
907 | ||
908 | void | |
909 | shutdown_osifile(void) | |
910 | { | |
911 | AFS_STATCNT(shutdown_osifile); | |
912 | return; | |
913 | } | |
914 | ||
915 | void | |
916 | afs_nfsclient_init(void) | |
917 | { | |
918 | } | |
919 | ||
920 | void | |
921 | shutdown_nfsclnt(void) | |
922 | { | |
923 | return; | |
924 | } | |
925 | ||
926 | void | |
927 | afs_osi_Invisible(void) | |
928 | { | |
929 | return; | |
930 | } | |
931 | ||
932 | void | |
933 | afs_osi_Visible(void) | |
934 | { | |
935 | return; | |
936 | } | |
937 | ||
938 | int | |
939 | osi_GetTime(struct timeval *tv) | |
940 | { | |
941 | gettimeofday(tv, NULL); | |
942 | return 0; | |
943 | } | |
944 | ||
945 | int | |
946 | osi_SetTime(struct timeval *tv) | |
947 | { | |
948 | return 0; | |
949 | } | |
950 | ||
951 | int | |
952 | osi_Active(struct vcache *avc) | |
953 | { | |
954 | AFS_STATCNT(osi_Active); | |
955 | if (avc->opens > 0) | |
956 | return (1); | |
957 | return 0; | |
958 | } | |
959 | ||
960 | int | |
961 | afs_osi_MapStrategy(int (*aproc) (struct usr_buf *), struct usr_buf *bp) | |
962 | { | |
963 | afs_int32 returnCode; | |
964 | returnCode = (*aproc) (bp); | |
965 | return returnCode; | |
966 | } | |
967 | ||
968 | void | |
969 | osi_FlushPages(struct vcache *avc, afs_ucred_t *credp) | |
970 | { | |
971 | ObtainSharedLock(&avc->lock, 555); | |
972 | if ((hcmp((avc->f.m.DataVersion), (avc->mapDV)) <= 0) | |
973 | || ((avc->execsOrWriters > 0) && afs_DirtyPages(avc))) { | |
974 | ReleaseSharedLock(&avc->lock); | |
975 | return; | |
976 | } | |
977 | UpgradeSToWLock(&avc->lock, 565); | |
978 | hset(avc->mapDV, avc->f.m.DataVersion); | |
979 | ReleaseWriteLock(&avc->lock); | |
980 | return; | |
981 | } | |
982 | ||
983 | void | |
984 | osi_FlushText_really(struct vcache *vp) | |
985 | { | |
986 | if (hcmp(vp->f.m.DataVersion, vp->flushDV) > 0) { | |
987 | hset(vp->flushDV, vp->f.m.DataVersion); | |
988 | } | |
989 | return; | |
990 | } | |
991 | ||
992 | int | |
993 | osi_SyncVM(struct vcache *avc) | |
994 | { | |
995 | return 0; | |
996 | } | |
997 | ||
998 | void | |
999 | osi_ReleaseVM(struct vcache *avc, int len, struct usr_ucred *credp) | |
1000 | { | |
1001 | return; | |
1002 | } | |
1003 | ||
1004 | void | |
1005 | osi_Init(void) | |
1006 | { | |
1007 | int i; | |
1008 | int st; | |
1009 | ||
1010 | /* | |
1011 | * Use the thread specific data to implement the user structure | |
1012 | */ | |
1013 | usr_keycreate(&afs_global_u_key, free); | |
1014 | ||
1015 | /* | |
1016 | * Initialize the global ucred structure | |
1017 | */ | |
1018 | afs_global_ucredp = (struct usr_ucred *) | |
1019 | afs_osi_Alloc(sizeof(struct usr_ucred)); | |
1020 | usr_assert(afs_global_ucredp != NULL); | |
1021 | afs_global_ucredp->cr_ref = 1; | |
1022 | afs_set_cr_uid(afs_global_ucredp, geteuid()); | |
1023 | afs_set_cr_gid(afs_global_ucredp, getegid()); | |
1024 | afs_set_cr_ruid(afs_global_ucredp, getuid()); | |
1025 | afs_set_cr_rgid(afs_global_ucredp, getgid()); | |
1026 | afs_global_ucredp->cr_suid = afs_cr_ruid(afs_global_ucredp); | |
1027 | afs_global_ucredp->cr_sgid = afs_cr_rgid(afs_global_ucredp); | |
1028 | st = getgroups(NGROUPS, &afs_global_ucredp->cr_groups[0]); | |
1029 | usr_assert(st >= 0); | |
1030 | afs_global_ucredp->cr_ngroups = (unsigned long)st; | |
1031 | for (i = st; i < NGROUPS; i++) { | |
1032 | afs_global_ucredp->cr_groups[i] = NOGROUP; | |
1033 | } | |
1034 | ||
1035 | /* | |
1036 | * Initialize the global process structure | |
1037 | */ | |
1038 | afs_global_procp = (struct usr_proc *) | |
1039 | afs_osi_Alloc(sizeof(struct usr_proc)); | |
1040 | usr_assert(afs_global_procp != NULL); | |
1041 | afs_global_procp->p_pid = osi_getpid(); | |
1042 | afs_global_procp->p_ppid = (pid_t) 1; | |
1043 | afs_global_procp->p_ucred = afs_global_ucredp; | |
1044 | ||
1045 | /* | |
1046 | * Initialize the mutex and condition variable used to implement | |
1047 | * time sleeps. | |
1048 | */ | |
1049 | pthread_mutex_init(&usr_sleep_mutex, NULL); | |
1050 | pthread_cond_init(&usr_sleep_cond, NULL); | |
1051 | ||
1052 | /* | |
1053 | * Initialize the hash table used for sleep/wakeup | |
1054 | */ | |
1055 | for (i = 0; i < OSI_WAITHASH_SIZE; i++) { | |
1056 | DLL_INIT_LIST(osi_waithash_table[i].head, osi_waithash_table[i].tail); | |
1057 | } | |
1058 | DLL_INIT_LIST(osi_timedwait_head, osi_timedwait_tail); | |
1059 | osi_waithash_avail = NULL; | |
1060 | ||
1061 | /* | |
1062 | * Initialize the AFS file table | |
1063 | */ | |
1064 | for (i = 0; i < MAX_OSI_FILES; i++) { | |
1065 | afs_FileTable[i] = NULL; | |
1066 | } | |
1067 | ||
1068 | /* | |
1069 | * Initialize the global locks | |
1070 | */ | |
1071 | usr_mutex_init(&afs_global_lock); | |
1072 | usr_mutex_init(&rx_global_lock); | |
1073 | usr_mutex_init(&osi_dummy_lock); | |
1074 | usr_mutex_init(&osi_waitq_lock); | |
1075 | usr_mutex_init(&osi_authenticate_lock); | |
1076 | ||
1077 | /* | |
1078 | * Initialize the AFS OSI credentials | |
1079 | */ | |
1080 | afs_osi_cred = *afs_global_ucredp; | |
1081 | afs_osi_credp = &afs_osi_cred; | |
1082 | ||
1083 | init_et_to_sys_error(); | |
1084 | } | |
1085 | ||
1086 | /* | |
1087 | * Set the UDP port number RX uses for UDP datagrams | |
1088 | */ | |
1089 | void | |
1090 | uafs_SetRxPort(int port) | |
1091 | { | |
1092 | usr_assert(usr_rx_port == 0); | |
1093 | usr_rx_port = port; | |
1094 | } | |
1095 | ||
1096 | /* | |
1097 | * uafs_Init is for backwards compatibility only! Do not use it; use | |
1098 | * uafs_Setup, uafs_ParseArgs, and uafs_Run instead. | |
1099 | */ | |
1100 | void | |
1101 | uafs_Init(char *rn, char *mountDirParam, char *confDirParam, | |
1102 | char *cacheBaseDirParam, int cacheBlocksParam, int cacheFilesParam, | |
1103 | int cacheStatEntriesParam, int dCacheSizeParam, int vCacheSizeParam, | |
1104 | int chunkSizeParam, int closeSynchParam, int debugParam, | |
1105 | int nDaemonsParam, int cacheFlagsParam, char *logFile) | |
1106 | { | |
1107 | int code; | |
1108 | int argc = 0; | |
1109 | char *argv[32]; | |
1110 | int freeargc = 0; | |
1111 | void *freeargv[32]; | |
1112 | char buf[1024]; | |
1113 | int i; | |
1114 | ||
1115 | code = uafs_Setup(mountDirParam); | |
1116 | usr_assert(code == 0); | |
1117 | ||
1118 | argv[argc++] = rn; | |
1119 | if (mountDirParam) { | |
1120 | argv[argc++] = "-mountdir"; | |
1121 | argv[argc++] = mountDirParam; | |
1122 | } | |
1123 | if (confDirParam) { | |
1124 | argv[argc++] = "-confdir"; | |
1125 | argv[argc++] = confDirParam; | |
1126 | } | |
1127 | if (cacheBaseDirParam) { | |
1128 | argv[argc++] = "-cachedir"; | |
1129 | argv[argc++] = cacheBaseDirParam; | |
1130 | } | |
1131 | if (cacheBlocksParam) { | |
1132 | snprintf(buf, sizeof(buf), "%d", cacheBlocksParam); | |
1133 | ||
1134 | argv[argc++] = "-blocks"; | |
1135 | argv[argc++] = freeargv[freeargc++] = strdup(buf); | |
1136 | } | |
1137 | if (cacheFilesParam) { | |
1138 | snprintf(buf, sizeof(buf), "%d", cacheFilesParam); | |
1139 | ||
1140 | argv[argc++] = "-files"; | |
1141 | argv[argc++] = freeargv[freeargc++] = strdup(buf); | |
1142 | } | |
1143 | if (cacheStatEntriesParam) { | |
1144 | snprintf(buf, sizeof(buf), "%d", cacheStatEntriesParam); | |
1145 | ||
1146 | argv[argc++] = "-stat"; | |
1147 | argv[argc++] = freeargv[freeargc++] = strdup(buf); | |
1148 | } | |
1149 | if (dCacheSizeParam) { | |
1150 | snprintf(buf, sizeof(buf), "%d", dCacheSizeParam); | |
1151 | ||
1152 | argv[argc++] = "-dcache"; | |
1153 | argv[argc++] = freeargv[freeargc++] = strdup(buf); | |
1154 | } | |
1155 | if (vCacheSizeParam) { | |
1156 | snprintf(buf, sizeof(buf), "%d", vCacheSizeParam); | |
1157 | ||
1158 | argv[argc++] = "-volumes"; | |
1159 | argv[argc++] = freeargv[freeargc++] = strdup(buf); | |
1160 | } | |
1161 | if (chunkSizeParam) { | |
1162 | snprintf(buf, sizeof(buf), "%d", chunkSizeParam); | |
1163 | ||
1164 | argv[argc++] = "-chunksize"; | |
1165 | argv[argc++] = freeargv[freeargc++] = strdup(buf); | |
1166 | } | |
1167 | if (closeSynchParam) { | |
1168 | argv[argc++] = "-waitclose"; | |
1169 | } | |
1170 | if (debugParam) { | |
1171 | argv[argc++] = "-debug"; | |
1172 | } | |
1173 | if (nDaemonsParam) { | |
1174 | snprintf(buf, sizeof(buf), "%d", nDaemonsParam); | |
1175 | ||
1176 | argv[argc++] = "-daemons"; | |
1177 | argv[argc++] = freeargv[freeargc++] = strdup(buf); | |
1178 | } | |
1179 | if (cacheFlagsParam) { | |
1180 | if (cacheFlagsParam & AFSCALL_INIT_MEMCACHE) { | |
1181 | argv[argc++] = "-memcache"; | |
1182 | } | |
1183 | } | |
1184 | if (logFile) { | |
1185 | argv[argc++] = "-logfile"; | |
1186 | argv[argc++] = logFile; | |
1187 | } | |
1188 | ||
1189 | argv[argc] = NULL; | |
1190 | ||
1191 | code = uafs_ParseArgs(argc, argv); | |
1192 | usr_assert(code == 0); | |
1193 | ||
1194 | for (i = 0; i < freeargc; i++) { | |
1195 | free(freeargv[i]); | |
1196 | } | |
1197 | ||
1198 | code = uafs_Run(); | |
1199 | usr_assert(code == 0); | |
1200 | } | |
1201 | ||
1202 | /** | |
1203 | * Calculate the cacheMountDir used for a specified dir. | |
1204 | * | |
1205 | * @param[in] dir Desired mount dir | |
1206 | * @param[out] mountdir On success, contains the literal string that should | |
1207 | * be used as the cache mount dir. | |
1208 | * @param[in] size The number of bytes allocated in mountdir | |
1209 | * | |
1210 | * @post On success, mountdir begins with a slash, and does not contain two | |
1211 | * slashes adjacent to each other | |
1212 | * | |
1213 | * @return operation status | |
1214 | * @retval 0 success | |
1215 | * @retval ENAMETOOLONG the specified dir is too long to fix in the given | |
1216 | * mountdir buffer | |
1217 | * @retval EINVAL the specified dir does not actually specify any meaningful | |
1218 | * mount directory | |
1219 | */ | |
1220 | static int | |
1221 | calcMountDir(const char *dir, char *mountdir, size_t size) | |
1222 | { | |
1223 | char buf[1024]; | |
1224 | char lastchar; | |
1225 | char *p; | |
1226 | int len; | |
1227 | ||
1228 | if (dir && strlen(dir) > size-1) { | |
1229 | return ENAMETOOLONG; | |
1230 | } | |
1231 | ||
1232 | /* | |
1233 | * Initialize the AFS mount point, default is '/afs'. | |
1234 | * Strip duplicate/trailing slashes from mount point string. | |
1235 | * afs_mountDirLen is set to strlen(afs_mountDir). | |
1236 | */ | |
1237 | if (!dir) { | |
1238 | dir = "afs"; | |
1239 | } | |
1240 | sprintf(buf, "%s", dir); | |
1241 | ||
1242 | mountdir[0] = '/'; | |
1243 | len = 1; | |
1244 | for (lastchar = '/', p = &buf[0]; *p != '\0'; p++) { | |
1245 | if (lastchar != '/' || *p != '/') { | |
1246 | mountdir[len++] = lastchar = *p; | |
1247 | } | |
1248 | } | |
1249 | if (lastchar == '/' && len > 1) | |
1250 | len--; | |
1251 | mountdir[len] = '\0'; | |
1252 | if (len <= 1) { | |
1253 | return EINVAL; | |
1254 | } | |
1255 | ||
1256 | return 0; | |
1257 | } | |
1258 | ||
1259 | void | |
1260 | uafs_mount(void) { | |
1261 | int rc; | |
1262 | ||
1263 | /* | |
1264 | * Mount the AFS filesystem | |
1265 | */ | |
1266 | AFS_GLOCK(); | |
1267 | rc = afs_mount(&afs_RootVfs, NULL, NULL); | |
1268 | usr_assert(rc == 0); | |
1269 | rc = afs_root(&afs_RootVfs, &afs_RootVnode); | |
1270 | usr_assert(rc == 0); | |
1271 | AFS_GUNLOCK(); | |
1272 | ||
1273 | /* | |
1274 | * initialize the current directory to the AFS root | |
1275 | */ | |
1276 | afs_CurrentDir = afs_RootVnode; | |
1277 | VN_HOLD(afs_CurrentDir); | |
1278 | ||
1279 | return; | |
1280 | } | |
1281 | ||
1282 | void | |
1283 | uafs_setMountDir(const char *dir) | |
1284 | { | |
1285 | if (dir) { | |
1286 | int rc; | |
1287 | char tmp_mountDir[1024]; | |
1288 | ||
1289 | rc = calcMountDir(dir, tmp_mountDir, sizeof(tmp_mountDir)); | |
1290 | if (rc) { | |
1291 | afs_warn("Invalid mount dir specification (error %d): %s\n", rc, dir); | |
1292 | } else { | |
1293 | if (strcmp(tmp_mountDir, afs_mountDir) != 0) { | |
1294 | /* mount dir changed */ | |
1295 | strcpy(afs_mountDir, tmp_mountDir); | |
1296 | afs_mountDirLen = strlen(afs_mountDir); | |
1297 | } | |
1298 | } | |
1299 | } | |
1300 | } | |
1301 | ||
1302 | int | |
1303 | uafs_statvfs(struct statvfs *buf) | |
1304 | { | |
1305 | int rc; | |
1306 | ||
1307 | AFS_GLOCK(); | |
1308 | ||
1309 | rc = afs_statvfs(&afs_RootVfs, buf); | |
1310 | ||
1311 | AFS_GUNLOCK(); | |
1312 | ||
1313 | if (rc) { | |
1314 | errno = rc; | |
1315 | return -1; | |
1316 | } | |
1317 | ||
1318 | return 0; | |
1319 | } | |
1320 | ||
1321 | void | |
1322 | uafs_Shutdown(void) | |
1323 | { | |
1324 | int rc; | |
1325 | ||
1326 | printf("\n"); | |
1327 | ||
1328 | AFS_GLOCK(); | |
1329 | if (afs_CurrentDir) { | |
1330 | VN_RELE(afs_CurrentDir); | |
1331 | } | |
1332 | rc = afs_unmount(&afs_RootVfs); | |
1333 | usr_assert(rc == 0); | |
1334 | AFS_GUNLOCK(); | |
1335 | ||
1336 | printf("\n"); | |
1337 | } | |
1338 | ||
1339 | /* | |
1340 | * Donate the current thread to the RX server pool. | |
1341 | */ | |
1342 | void | |
1343 | uafs_RxServerProc(void) | |
1344 | { | |
1345 | osi_socket sock; | |
1346 | int threadID; | |
1347 | struct rx_call *newcall = NULL; | |
1348 | ||
1349 | rxi_MorePackets(2); /* alloc more packets */ | |
1350 | threadID = rxi_availProcs++; | |
1351 | ||
1352 | while (1) { | |
1353 | sock = OSI_NULLSOCKET; | |
1354 | rxi_ServerProc(threadID, newcall, &sock); | |
1355 | if (sock == OSI_NULLSOCKET) { | |
1356 | break; | |
1357 | } | |
1358 | newcall = NULL; | |
1359 | threadID = -1; | |
1360 | rxi_ListenerProc(sock, &threadID, &newcall); | |
1361 | /* assert(threadID != -1); */ | |
1362 | /* assert(newcall != NULL); */ | |
1363 | } | |
1364 | } | |
1365 | ||
1366 | struct syscallThreadArgs { | |
1367 | long syscall; | |
1368 | long afscall; | |
1369 | long param1; | |
1370 | long param2; | |
1371 | long param3; | |
1372 | long param4; | |
1373 | }; | |
1374 | ||
1375 | void * | |
1376 | syscallThread(void *argp) | |
1377 | { | |
1378 | int i; | |
1379 | struct usr_ucred *crp; | |
1380 | struct syscallThreadArgs *sysArgsP = (struct syscallThreadArgs *)argp; | |
1381 | ||
1382 | /* | |
1383 | * AFS daemons run authenticated | |
1384 | */ | |
1385 | get_user_struct()->u_viceid = getuid(); | |
1386 | crp = get_user_struct()->u_cred; | |
1387 | afs_set_cr_uid(crp, getuid()); | |
1388 | afs_set_cr_ruid(crp, getuid()); | |
1389 | crp->cr_suid = getuid(); | |
1390 | crp->cr_groups[0] = getgid(); | |
1391 | crp->cr_ngroups = 1; | |
1392 | for (i = 1; i < NGROUPS; i++) { | |
1393 | crp->cr_groups[i] = NOGROUP; | |
1394 | } | |
1395 | ||
1396 | call_syscall(sysArgsP->syscall, sysArgsP->afscall, sysArgsP->param1, | |
1397 | sysArgsP->param2, sysArgsP->param3, sysArgsP->param4); | |
1398 | ||
1399 | afs_osi_Free(argp, -1); | |
1400 | return 0; | |
1401 | } | |
1402 | ||
1403 | int | |
1404 | fork_syscall(long syscall, long afscall, long param1, long param2, | |
1405 | long param3, long param4) | |
1406 | { | |
1407 | usr_thread_t tid; | |
1408 | struct syscallThreadArgs *sysArgsP; | |
1409 | ||
1410 | sysArgsP = (struct syscallThreadArgs *) | |
1411 | afs_osi_Alloc(sizeof(struct syscallThreadArgs)); | |
1412 | usr_assert(sysArgsP != NULL); | |
1413 | sysArgsP->syscall = syscall; | |
1414 | sysArgsP->afscall = afscall; | |
1415 | sysArgsP->param1 = param1; | |
1416 | sysArgsP->param2 = param2; | |
1417 | sysArgsP->param3 = param3; | |
1418 | sysArgsP->param4 = param4; | |
1419 | ||
1420 | usr_thread_create(&tid, syscallThread, sysArgsP); | |
1421 | usr_thread_detach(tid); | |
1422 | return 0; | |
1423 | } | |
1424 | ||
1425 | int | |
1426 | call_syscall(long syscall, long afscall, long param1, long param2, | |
1427 | long param3, long param4) | |
1428 | { | |
1429 | int code = 0; | |
1430 | struct a { | |
1431 | long syscall; | |
1432 | long afscall; | |
1433 | long parm1; | |
1434 | long parm2; | |
1435 | long parm3; | |
1436 | long parm4; | |
1437 | } a; | |
1438 | ||
1439 | a.syscall = syscall; | |
1440 | a.afscall = afscall; | |
1441 | a.parm1 = param1; | |
1442 | a.parm2 = param2; | |
1443 | a.parm3 = param3; | |
1444 | a.parm4 = param4; | |
1445 | ||
1446 | get_user_struct()->u_error = 0; | |
1447 | get_user_struct()->u_ap = (char *)&a; | |
1448 | ||
1449 | code = Afs_syscall(); | |
1450 | return code; | |
1451 | } | |
1452 | ||
1453 | int | |
1454 | uafs_Setup(const char *mount) | |
1455 | { | |
1456 | int rc; | |
1457 | static int inited = 0; | |
1458 | ||
1459 | if (inited) { | |
1460 | return EEXIST; | |
1461 | } | |
1462 | inited = 1; | |
1463 | ||
1464 | rc = calcMountDir(mount, afs_mountDir, sizeof(afs_mountDir)); | |
1465 | if (rc) { | |
1466 | return rc; | |
1467 | } | |
1468 | afs_mountDirLen = strlen(afs_mountDir); | |
1469 | ||
1470 | /* initialize global vars and such */ | |
1471 | osi_Init(); | |
1472 | ||
1473 | /* initialize cache manager foo */ | |
1474 | afsd_init(); | |
1475 | ||
1476 | return 0; | |
1477 | } | |
1478 | ||
1479 | int | |
1480 | uafs_ParseArgs(int argc, char **argv) | |
1481 | { | |
1482 | return afsd_parse(argc, argv); | |
1483 | } | |
1484 | ||
1485 | int | |
1486 | uafs_Run(void) | |
1487 | { | |
1488 | return afsd_run(); | |
1489 | } | |
1490 | ||
1491 | const char * | |
1492 | uafs_MountDir(void) | |
1493 | { | |
1494 | return afsd_cacheMountDir; | |
1495 | } | |
1496 | ||
1497 | int | |
1498 | uafs_SetTokens(char *tbuffer, int tlen) | |
1499 | { | |
1500 | int rc; | |
1501 | struct afs_ioctl iob; | |
1502 | char outbuf[1024]; | |
1503 | ||
1504 | iob.in = tbuffer; | |
1505 | iob.in_size = tlen; | |
1506 | iob.out = &outbuf[0]; | |
1507 | iob.out_size = sizeof(outbuf); | |
1508 | ||
1509 | rc = call_syscall(AFSCALL_PIOCTL, 0, _VICEIOCTL(3), (long)&iob, 0, 0); | |
1510 | if (rc != 0) { | |
1511 | errno = rc; | |
1512 | return -1; | |
1513 | } | |
1514 | return 0; | |
1515 | } | |
1516 | ||
1517 | int | |
1518 | uafs_RPCStatsEnableProc(void) | |
1519 | { | |
1520 | int rc; | |
1521 | struct afs_ioctl iob; | |
1522 | afs_int32 flag; | |
1523 | ||
1524 | flag = AFSCALL_RXSTATS_ENABLE; | |
1525 | iob.in = (char *)&flag; | |
1526 | iob.in_size = sizeof(afs_int32); | |
1527 | iob.out = NULL; | |
1528 | iob.out_size = 0; | |
1529 | rc = call_syscall(AFSCALL_PIOCTL, 0, _VICEIOCTL(53), (long)&iob, 0, 0); | |
1530 | if (rc != 0) { | |
1531 | errno = rc; | |
1532 | return -1; | |
1533 | } | |
1534 | return rc; | |
1535 | } | |
1536 | ||
1537 | int | |
1538 | uafs_RPCStatsDisableProc(void) | |
1539 | { | |
1540 | int rc; | |
1541 | struct afs_ioctl iob; | |
1542 | afs_int32 flag; | |
1543 | ||
1544 | flag = AFSCALL_RXSTATS_DISABLE; | |
1545 | iob.in = (char *)&flag; | |
1546 | iob.in_size = sizeof(afs_int32); | |
1547 | iob.out = NULL; | |
1548 | iob.out_size = 0; | |
1549 | rc = call_syscall(AFSCALL_PIOCTL, 0, _VICEIOCTL(53), (long)&iob, 0, 0); | |
1550 | if (rc != 0) { | |
1551 | errno = rc; | |
1552 | return -1; | |
1553 | } | |
1554 | return rc; | |
1555 | } | |
1556 | ||
1557 | int | |
1558 | uafs_RPCStatsClearProc(void) | |
1559 | { | |
1560 | int rc; | |
1561 | struct afs_ioctl iob; | |
1562 | afs_int32 flag; | |
1563 | ||
1564 | flag = AFSCALL_RXSTATS_CLEAR; | |
1565 | iob.in = (char *)&flag; | |
1566 | iob.in_size = sizeof(afs_int32); | |
1567 | iob.out = NULL; | |
1568 | iob.out_size = 0; | |
1569 | rc = call_syscall(AFSCALL_PIOCTL, 0, _VICEIOCTL(53), (long)&iob, 0, 0); | |
1570 | if (rc != 0) { | |
1571 | errno = rc; | |
1572 | return -1; | |
1573 | } | |
1574 | return rc; | |
1575 | } | |
1576 | ||
1577 | int | |
1578 | uafs_RPCStatsEnablePeer(void) | |
1579 | { | |
1580 | int rc; | |
1581 | struct afs_ioctl iob; | |
1582 | afs_int32 flag; | |
1583 | ||
1584 | flag = AFSCALL_RXSTATS_ENABLE; | |
1585 | iob.in = (char *)&flag; | |
1586 | iob.in_size = sizeof(afs_int32); | |
1587 | iob.out = NULL; | |
1588 | iob.out_size = 0; | |
1589 | rc = call_syscall(AFSCALL_PIOCTL, 0, _VICEIOCTL(54), (long)&iob, 0, 0); | |
1590 | if (rc != 0) { | |
1591 | errno = rc; | |
1592 | return -1; | |
1593 | } | |
1594 | return rc; | |
1595 | } | |
1596 | ||
1597 | int | |
1598 | uafs_RPCStatsDisablePeer(void) | |
1599 | { | |
1600 | int rc; | |
1601 | struct afs_ioctl iob; | |
1602 | afs_int32 flag; | |
1603 | ||
1604 | flag = AFSCALL_RXSTATS_DISABLE; | |
1605 | iob.in = (char *)&flag; | |
1606 | iob.in_size = sizeof(afs_int32); | |
1607 | iob.out = NULL; | |
1608 | iob.out_size = 0; | |
1609 | rc = call_syscall(AFSCALL_PIOCTL, 0, _VICEIOCTL(54), (long)&iob, 0, 0); | |
1610 | if (rc != 0) { | |
1611 | errno = rc; | |
1612 | return -1; | |
1613 | } | |
1614 | return rc; | |
1615 | } | |
1616 | ||
1617 | int | |
1618 | uafs_RPCStatsClearPeer(void) | |
1619 | { | |
1620 | int rc; | |
1621 | struct afs_ioctl iob; | |
1622 | afs_int32 flag; | |
1623 | ||
1624 | flag = AFSCALL_RXSTATS_CLEAR; | |
1625 | iob.in = (char *)&flag; | |
1626 | iob.in_size = sizeof(afs_int32); | |
1627 | iob.out = NULL; | |
1628 | iob.out_size = 0; | |
1629 | rc = call_syscall(AFSCALL_PIOCTL, 0, _VICEIOCTL(54), (long)&iob, 0, 0); | |
1630 | if (rc != 0) { | |
1631 | errno = rc; | |
1632 | return -1; | |
1633 | } | |
1634 | return rc; | |
1635 | } | |
1636 | ||
1637 | /* | |
1638 | * Lookup the target of a symbolic link | |
1639 | * Call VN_HOLD on the output vnode if successful. | |
1640 | * Returns zero on success, error code on failure. | |
1641 | * If provided, use a path for confirming we are not linked to ourself. | |
1642 | * | |
1643 | * Note: Caller must hold the AFS global lock. | |
1644 | */ | |
1645 | static int | |
1646 | uafs_LookupLinkPath(struct usr_vnode *vp, struct usr_vnode *parentVp, | |
1647 | char *ppathP, struct usr_vnode **vpp) | |
1648 | { | |
1649 | int code; | |
1650 | int len; | |
1651 | char *pathP; | |
1652 | struct usr_vnode *linkVp; | |
1653 | struct usr_uio uio; | |
1654 | struct iovec iov[1]; | |
1655 | ||
1656 | AFS_ASSERT_GLOCK(); | |
1657 | ||
1658 | pathP = afs_osi_Alloc(MAX_OSI_PATH + 1); | |
1659 | usr_assert(pathP != NULL); | |
1660 | ||
1661 | /* | |
1662 | * set up the uio buffer | |
1663 | */ | |
1664 | iov[0].iov_base = pathP; | |
1665 | iov[0].iov_len = MAX_OSI_PATH + 1; | |
1666 | uio.uio_iov = &iov[0]; | |
1667 | uio.uio_iovcnt = 1; | |
1668 | uio.uio_offset = 0; | |
1669 | uio.uio_segflg = 0; | |
1670 | uio.uio_fmode = FREAD; | |
1671 | uio.uio_resid = MAX_OSI_PATH + 1; | |
1672 | ||
1673 | /* | |
1674 | * Read the link data | |
1675 | */ | |
1676 | code = afs_readlink(VTOAFS(vp), &uio, get_user_struct()->u_cred); | |
1677 | if (code) { | |
1678 | afs_osi_Free(pathP, MAX_OSI_PATH + 1); | |
1679 | return code; | |
1680 | } | |
1681 | len = MAX_OSI_PATH + 1 - uio.uio_resid; | |
1682 | pathP[len] = '\0'; | |
1683 | ||
1684 | /* are we linked to ourname or ./ourname? ELOOP */ | |
1685 | if (ppathP) { | |
1686 | if ((strcmp(pathP, ppathP) == 0) || | |
1687 | ((pathP[0] == '.') && | |
1688 | (pathP[1] == '/') && | |
1689 | (strcmp(&(pathP[2]), ppathP) == 0))) { | |
1690 | return ELOOP; | |
1691 | } | |
1692 | } | |
1693 | ||
1694 | /* | |
1695 | * Find the target of the symbolic link | |
1696 | */ | |
1697 | code = uafs_LookupName(pathP, parentVp, &linkVp, 1, 0); | |
1698 | if (code) { | |
1699 | afs_osi_Free(pathP, MAX_OSI_PATH + 1); | |
1700 | return code; | |
1701 | } | |
1702 | ||
1703 | afs_osi_Free(pathP, MAX_OSI_PATH + 1); | |
1704 | *vpp = linkVp; | |
1705 | return 0; | |
1706 | } | |
1707 | ||
1708 | /* | |
1709 | * Lookup a file or directory given its path. | |
1710 | * Call VN_HOLD on the output vnode if successful. | |
1711 | * Returns zero on success, error code on failure. | |
1712 | * | |
1713 | * Note: Caller must hold the AFS global lock. | |
1714 | */ | |
1715 | int | |
1716 | uafs_LookupName(char *path, struct usr_vnode *parentVp, | |
1717 | struct usr_vnode **vpp, int follow, int no_eval_mtpt) | |
1718 | { | |
1719 | int code = 0; | |
1720 | int linkCount; | |
1721 | struct usr_vnode *vp; | |
1722 | struct usr_vnode *nextVp; | |
1723 | struct usr_vnode *linkVp; | |
1724 | struct vcache *nextVc; | |
1725 | char *tmpPath; | |
1726 | char *pathP; | |
1727 | char *nextPathP = NULL; | |
1728 | ||
1729 | AFS_ASSERT_GLOCK(); | |
1730 | ||
1731 | /* | |
1732 | * Absolute paths must start with the AFS mount point. | |
1733 | */ | |
1734 | if (path[0] != '/') { | |
1735 | vp = parentVp; | |
1736 | } else { | |
1737 | path = uafs_afsPathName(path); | |
1738 | if (path == NULL) { | |
1739 | return ENOENT; | |
1740 | } | |
1741 | vp = afs_RootVnode; | |
1742 | } | |
1743 | ||
1744 | /* | |
1745 | * Loop through the path looking for the new directory | |
1746 | */ | |
1747 | tmpPath = afs_osi_Alloc(strlen(path) + 1); | |
1748 | usr_assert(tmpPath != NULL); | |
1749 | strcpy(tmpPath, path); | |
1750 | VN_HOLD(vp); | |
1751 | pathP = tmpPath; | |
1752 | while (pathP != NULL && *pathP != '\0') { | |
1753 | usr_assert(*pathP != '/'); | |
1754 | ||
1755 | /* | |
1756 | * terminate the current component and skip over slashes | |
1757 | */ | |
1758 | nextPathP = afs_strchr(pathP, '/'); | |
1759 | if (nextPathP != NULL) { | |
1760 | while (*nextPathP == '/') { | |
1761 | *(nextPathP++) = '\0'; | |
1762 | } | |
1763 | } | |
1764 | ||
1765 | /* | |
1766 | * Don't call afs_lookup on non-directories | |
1767 | */ | |
1768 | if (vp->v_type != VDIR) { | |
1769 | VN_RELE(vp); | |
1770 | afs_osi_Free(tmpPath, strlen(path) + 1); | |
1771 | return ENOTDIR; | |
1772 | } | |
1773 | ||
1774 | if (vp == afs_RootVnode && strcmp(pathP, "..") == 0) { | |
1775 | /* | |
1776 | * The AFS root is its own parent | |
1777 | */ | |
1778 | nextVp = afs_RootVnode; | |
1779 | } else { | |
1780 | /* | |
1781 | * We need execute permission to search a directory | |
1782 | */ | |
1783 | code = afs_access(VTOAFS(vp), VEXEC, get_user_struct()->u_cred); | |
1784 | if (code != 0) { | |
1785 | VN_RELE(vp); | |
1786 | afs_osi_Free(tmpPath, strlen(path) + 1); | |
1787 | return code; | |
1788 | } | |
1789 | ||
1790 | /* | |
1791 | * lookup the next component in the path, we can release the | |
1792 | * subdirectory since we hold the global lock | |
1793 | */ | |
1794 | nextVc = NULL; | |
1795 | nextVp = NULL; | |
1796 | if ((nextPathP != NULL && *nextPathP != '\0') || !no_eval_mtpt) | |
1797 | code = afs_lookup(VTOAFS(vp), pathP, &nextVc, get_user_struct()->u_cred, 0); | |
1798 | else | |
1799 | code = | |
1800 | afs_lookup(VTOAFS(vp), pathP, &nextVc, get_user_struct()->u_cred, | |
1801 | AFS_LOOKUP_NOEVAL); | |
1802 | if (nextVc) | |
1803 | nextVp=AFSTOV(nextVc); | |
1804 | if (code != 0) { | |
1805 | VN_RELE(vp); | |
1806 | afs_osi_Free(tmpPath, strlen(path) + 1); | |
1807 | return code; | |
1808 | } | |
1809 | } | |
1810 | ||
1811 | /* | |
1812 | * Follow symbolic links for parent directories and | |
1813 | * for leaves when the follow flag is set. | |
1814 | */ | |
1815 | if ((nextPathP != NULL && *nextPathP != '\0') || follow) { | |
1816 | linkCount = 0; | |
1817 | while (nextVp->v_type == VLNK) { | |
1818 | if (++linkCount > MAX_OSI_LINKS) { | |
1819 | VN_RELE(vp); | |
1820 | VN_RELE(nextVp); | |
1821 | afs_osi_Free(tmpPath, strlen(path) + 1); | |
1822 | return code; | |
1823 | } | |
1824 | code = uafs_LookupLinkPath(nextVp, vp, NULL, &linkVp); | |
1825 | if (code) { | |
1826 | VN_RELE(vp); | |
1827 | VN_RELE(nextVp); | |
1828 | afs_osi_Free(tmpPath, strlen(path) + 1); | |
1829 | return code; | |
1830 | } | |
1831 | VN_RELE(nextVp); | |
1832 | nextVp = linkVp; | |
1833 | } | |
1834 | } | |
1835 | ||
1836 | VN_RELE(vp); | |
1837 | vp = nextVp; | |
1838 | pathP = nextPathP; | |
1839 | } | |
1840 | ||
1841 | /* | |
1842 | * Special case, nextPathP is non-null if pathname ends in slash | |
1843 | */ | |
1844 | if (nextPathP != NULL && vp->v_type != VDIR) { | |
1845 | VN_RELE(vp); | |
1846 | afs_osi_Free(tmpPath, strlen(path) + 1); | |
1847 | return ENOTDIR; | |
1848 | } | |
1849 | ||
1850 | afs_osi_Free(tmpPath, strlen(path) + 1); | |
1851 | *vpp = vp; | |
1852 | return 0; | |
1853 | } | |
1854 | ||
1855 | int | |
1856 | uafs_LookupLink(struct usr_vnode *vp, struct usr_vnode *parentVp, | |
1857 | struct usr_vnode **vpp) | |
1858 | { | |
1859 | return uafs_LookupLinkPath(vp, parentVp, NULL, vpp); | |
1860 | } | |
1861 | ||
1862 | /* | |
1863 | * Lookup the parent of a file or directory given its path | |
1864 | * Call VN_HOLD on the output vnode if successful. | |
1865 | * Returns zero on success, error code on failure. | |
1866 | * | |
1867 | * Note: Caller must hold the AFS global lock. | |
1868 | */ | |
1869 | int | |
1870 | uafs_LookupParent(char *path, struct usr_vnode **vpp) | |
1871 | { | |
1872 | int len; | |
1873 | int code; | |
1874 | char *pathP; | |
1875 | struct usr_vnode *parentP; | |
1876 | ||
1877 | AFS_ASSERT_GLOCK(); | |
1878 | ||
1879 | /* | |
1880 | * Absolute path names must start with the AFS mount point. | |
1881 | */ | |
1882 | if (*path == '/') { | |
1883 | pathP = uafs_afsPathName(path); | |
1884 | if (pathP == NULL) { | |
1885 | return ENOENT; | |
1886 | } | |
1887 | } | |
1888 | ||
1889 | /* | |
1890 | * Find the length of the parent path | |
1891 | */ | |
1892 | len = strlen(path); | |
1893 | while (len > 0 && path[len - 1] == '/') { | |
1894 | len--; | |
1895 | } | |
1896 | if (len == 0) { | |
1897 | return EINVAL; | |
1898 | } | |
1899 | while (len > 0 && path[len - 1] != '/') { | |
1900 | len--; | |
1901 | } | |
1902 | if (len == 0) { | |
1903 | return EINVAL; | |
1904 | } | |
1905 | ||
1906 | pathP = afs_osi_Alloc(len); | |
1907 | usr_assert(pathP != NULL); | |
1908 | memcpy(pathP, path, len - 1); | |
1909 | pathP[len - 1] = '\0'; | |
1910 | ||
1911 | /* | |
1912 | * look up the parent | |
1913 | */ | |
1914 | code = uafs_LookupName(pathP, afs_CurrentDir, &parentP, 1, 0); | |
1915 | afs_osi_Free(pathP, len); | |
1916 | if (code != 0) { | |
1917 | return code; | |
1918 | } | |
1919 | if (parentP->v_type != VDIR) { | |
1920 | VN_RELE(parentP); | |
1921 | return ENOTDIR; | |
1922 | } | |
1923 | ||
1924 | *vpp = parentP; | |
1925 | return 0; | |
1926 | } | |
1927 | ||
1928 | /* | |
1929 | * Return a pointer to the first character in the last component | |
1930 | * of a pathname | |
1931 | */ | |
1932 | char * | |
1933 | uafs_LastPath(char *path) | |
1934 | { | |
1935 | int len; | |
1936 | ||
1937 | len = strlen(path); | |
1938 | while (len > 0 && path[len - 1] == '/') { | |
1939 | len--; | |
1940 | } | |
1941 | while (len > 0 && path[len - 1] != '/') { | |
1942 | len--; | |
1943 | } | |
1944 | if (len == 0) { | |
1945 | return NULL; | |
1946 | } | |
1947 | return path + len; | |
1948 | } | |
1949 | ||
1950 | /* | |
1951 | * Set the working directory. | |
1952 | */ | |
1953 | int | |
1954 | uafs_chdir(char *path) | |
1955 | { | |
1956 | int retval; | |
1957 | AFS_GLOCK(); | |
1958 | retval = uafs_chdir_r(path); | |
1959 | AFS_GUNLOCK(); | |
1960 | return retval; | |
1961 | } | |
1962 | ||
1963 | int | |
1964 | uafs_chdir_r(char *path) | |
1965 | { | |
1966 | int code; | |
1967 | struct vnode *dirP; | |
1968 | ||
1969 | code = uafs_LookupName(path, afs_CurrentDir, &dirP, 1, 0); | |
1970 | if (code != 0) { | |
1971 | errno = code; | |
1972 | return -1; | |
1973 | } | |
1974 | if (dirP->v_type != VDIR) { | |
1975 | VN_RELE(dirP); | |
1976 | errno = ENOTDIR; | |
1977 | return -1; | |
1978 | } | |
1979 | VN_RELE(afs_CurrentDir); | |
1980 | afs_CurrentDir = dirP; | |
1981 | return 0; | |
1982 | } | |
1983 | ||
1984 | /* | |
1985 | * Create a directory. | |
1986 | */ | |
1987 | int | |
1988 | uafs_mkdir(char *path, int mode) | |
1989 | { | |
1990 | int retval; | |
1991 | AFS_GLOCK(); | |
1992 | retval = uafs_mkdir_r(path, mode); | |
1993 | AFS_GUNLOCK(); | |
1994 | return retval; | |
1995 | } | |
1996 | ||
1997 | int | |
1998 | uafs_mkdir_r(char *path, int mode) | |
1999 | { | |
2000 | int code; | |
2001 | char *nameP; | |
2002 | struct vnode *parentP; | |
2003 | struct vcache *dirP; | |
2004 | struct usr_vattr attrs; | |
2005 | ||
2006 | if (uafs_IsRoot(path)) { | |
2007 | return EACCES; | |
2008 | } | |
2009 | ||
2010 | /* | |
2011 | * Look up the parent directory. | |
2012 | */ | |
2013 | nameP = uafs_LastPath(path); | |
2014 | if (nameP != NULL) { | |
2015 | code = uafs_LookupParent(path, &parentP); | |
2016 | if (code != 0) { | |
2017 | errno = code; | |
2018 | return -1; | |
2019 | } | |
2020 | } else { | |
2021 | parentP = afs_CurrentDir; | |
2022 | nameP = path; | |
2023 | VN_HOLD(parentP); | |
2024 | } | |
2025 | ||
2026 | /* | |
2027 | * Make sure the directory has at least one character | |
2028 | */ | |
2029 | if (*nameP == '\0') { | |
2030 | VN_RELE(parentP); | |
2031 | errno = EINVAL; | |
2032 | return -1; | |
2033 | } | |
2034 | ||
2035 | /* | |
2036 | * Create the directory | |
2037 | */ | |
2038 | usr_vattr_null(&attrs); | |
2039 | attrs.va_type = VREG; | |
2040 | attrs.va_mode = mode; | |
2041 | attrs.va_uid = afs_cr_uid(get_user_struct()->u_cred); | |
2042 | attrs.va_gid = afs_cr_gid(get_user_struct()->u_cred); | |
2043 | dirP = NULL; | |
2044 | code = afs_mkdir(VTOAFS(parentP), nameP, &attrs, &dirP, get_user_struct()->u_cred); | |
2045 | VN_RELE(parentP); | |
2046 | if (code != 0) { | |
2047 | errno = code; | |
2048 | return -1; | |
2049 | } | |
2050 | VN_RELE(AFSTOV(dirP)); | |
2051 | return 0; | |
2052 | } | |
2053 | ||
2054 | /* | |
2055 | * Return 1 if path is the AFS root, otherwise return 0 | |
2056 | */ | |
2057 | int | |
2058 | uafs_IsRoot(char *path) | |
2059 | { | |
2060 | while (*path == '/' && *(path + 1) == '/') { | |
2061 | path++; | |
2062 | } | |
2063 | if (strncmp(path, afs_mountDir, afs_mountDirLen) != 0) { | |
2064 | return 0; | |
2065 | } | |
2066 | path += afs_mountDirLen; | |
2067 | while (*path == '/') { | |
2068 | path++; | |
2069 | } | |
2070 | if (*path != '\0') { | |
2071 | return 0; | |
2072 | } | |
2073 | return 1; | |
2074 | } | |
2075 | ||
2076 | /* | |
2077 | * Open a file | |
2078 | * Note: file name may not end in a slash. | |
2079 | */ | |
2080 | int | |
2081 | uafs_open(char *path, int flags, int mode) | |
2082 | { | |
2083 | int retval; | |
2084 | AFS_GLOCK(); | |
2085 | retval = uafs_open_r(path, flags, mode); | |
2086 | AFS_GUNLOCK(); | |
2087 | return retval; | |
2088 | } | |
2089 | ||
2090 | int | |
2091 | uafs_open_r(char *path, int flags, int mode) | |
2092 | { | |
2093 | int fd; | |
2094 | int code; | |
2095 | int openFlags; | |
2096 | int fileMode; | |
2097 | struct usr_vnode *fileP; | |
2098 | struct usr_vnode *dirP; | |
2099 | struct usr_vattr attrs; | |
2100 | char *nameP; | |
2101 | ||
2102 | struct vcache* vc; | |
2103 | ||
2104 | if (uafs_IsRoot(path)) { | |
2105 | fileP = afs_RootVnode; | |
2106 | VN_HOLD(fileP); | |
2107 | } else { | |
2108 | /* | |
2109 | * Look up the parent directory. | |
2110 | */ | |
2111 | nameP = uafs_LastPath(path); | |
2112 | if (nameP != NULL) { | |
2113 | code = uafs_LookupParent(path, &dirP); | |
2114 | if (code != 0) { | |
2115 | errno = code; | |
2116 | return -1; | |
2117 | } | |
2118 | } else { | |
2119 | dirP = afs_CurrentDir; | |
2120 | nameP = path; | |
2121 | VN_HOLD(dirP); | |
2122 | } | |
2123 | ||
2124 | /* | |
2125 | * Make sure the filename has at least one character | |
2126 | */ | |
2127 | if (*nameP == '\0') { | |
2128 | VN_RELE(dirP); | |
2129 | errno = EINVAL; | |
2130 | return -1; | |
2131 | } | |
2132 | ||
2133 | /* | |
2134 | * Get the VNODE for this file | |
2135 | */ | |
2136 | if (flags & O_CREAT) { | |
2137 | usr_vattr_null(&attrs); | |
2138 | attrs.va_type = VREG; | |
2139 | attrs.va_mode = mode; | |
2140 | attrs.va_uid = afs_cr_uid(get_user_struct()->u_cred); | |
2141 | attrs.va_gid = afs_cr_gid(get_user_struct()->u_cred); | |
2142 | if (flags & O_TRUNC) { | |
2143 | attrs.va_size = 0; | |
2144 | } | |
2145 | fileP = NULL; | |
2146 | vc=VTOAFS(fileP); | |
2147 | code = | |
2148 | afs_create(VTOAFS(dirP), nameP, &attrs, | |
2149 | (flags & O_EXCL) ? usr_EXCL : usr_NONEXCL, mode, | |
2150 | &vc, get_user_struct()->u_cred); | |
2151 | VN_RELE(dirP); | |
2152 | if (code != 0) { | |
2153 | errno = code; | |
2154 | return -1; | |
2155 | } | |
2156 | fileP = AFSTOV(vc); | |
2157 | } else { | |
2158 | fileP = NULL; | |
2159 | code = uafs_LookupName(nameP, dirP, &fileP, 1, 0); | |
2160 | VN_RELE(dirP); | |
2161 | if (code != 0) { | |
2162 | errno = code; | |
2163 | return -1; | |
2164 | } | |
2165 | ||
2166 | /* | |
2167 | * Check whether we have access to this file | |
2168 | */ | |
2169 | fileMode = 0; | |
2170 | if (flags & (O_RDONLY | O_RDWR)) { | |
2171 | fileMode |= VREAD; | |
2172 | } | |
2173 | if (flags & (O_WRONLY | O_RDWR)) { | |
2174 | fileMode |= VWRITE; | |
2175 | } | |
2176 | if (!fileMode) | |
2177 | fileMode = VREAD; /* since O_RDONLY is 0 */ | |
2178 | code = afs_access(VTOAFS(fileP), fileMode, get_user_struct()->u_cred); | |
2179 | if (code != 0) { | |
2180 | VN_RELE(fileP); | |
2181 | errno = code; | |
2182 | return -1; | |
2183 | } | |
2184 | ||
2185 | /* | |
2186 | * Get the file attributes, all we need is the size | |
2187 | */ | |
2188 | code = afs_getattr(VTOAFS(fileP), &attrs, get_user_struct()->u_cred); | |
2189 | if (code != 0) { | |
2190 | VN_RELE(fileP); | |
2191 | errno = code; | |
2192 | return -1; | |
2193 | } | |
2194 | } | |
2195 | } | |
2196 | ||
2197 | /* | |
2198 | * Setup the open flags | |
2199 | */ | |
2200 | openFlags = 0; | |
2201 | if (flags & O_TRUNC) { | |
2202 | openFlags |= FTRUNC; | |
2203 | } | |
2204 | if (flags & O_APPEND) { | |
2205 | openFlags |= FAPPEND; | |
2206 | } | |
2207 | if (flags & O_SYNC) { | |
2208 | openFlags |= FSYNC; | |
2209 | } | |
2210 | if (flags & O_SYNC) { | |
2211 | openFlags |= FSYNC; | |
2212 | } | |
2213 | if (flags & (O_RDONLY | O_RDWR)) { | |
2214 | openFlags |= FREAD; | |
2215 | } | |
2216 | if (flags & (O_WRONLY | O_RDWR)) { | |
2217 | openFlags |= FWRITE; | |
2218 | } | |
2219 | if ((openFlags & (FREAD | FWRITE)) == 0) { | |
2220 | /* O_RDONLY is 0, so ... */ | |
2221 | openFlags |= FREAD; | |
2222 | } | |
2223 | ||
2224 | /* | |
2225 | * Truncate if necessary | |
2226 | */ | |
2227 | if ((flags & O_TRUNC) && (attrs.va_size != 0)) { | |
2228 | usr_vattr_null(&attrs); | |
2229 | attrs.va_mask = ATTR_SIZE; | |
2230 | attrs.va_size = 0; | |
2231 | code = afs_setattr(VTOAFS(fileP), &attrs, get_user_struct()->u_cred); | |
2232 | if (code != 0) { | |
2233 | VN_RELE(fileP); | |
2234 | errno = code; | |
2235 | return -1; | |
2236 | } | |
2237 | } | |
2238 | ||
2239 | vc=VTOAFS(fileP); | |
2240 | /* | |
2241 | * do the open | |
2242 | */ | |
2243 | code = afs_open(&vc, openFlags, get_user_struct()->u_cred); | |
2244 | if (code != 0) { | |
2245 | VN_RELE(fileP); | |
2246 | errno = code; | |
2247 | return -1; | |
2248 | } | |
2249 | ||
2250 | /* | |
2251 | * Put the vnode pointer into the file table | |
2252 | */ | |
2253 | for (fd = 0; fd < MAX_OSI_FILES; fd++) { | |
2254 | if (afs_FileTable[fd] == NULL) { | |
2255 | afs_FileTable[fd] = fileP; | |
2256 | afs_FileFlags[fd] = openFlags; | |
2257 | if (flags & O_APPEND) { | |
2258 | afs_FileOffsets[fd] = attrs.va_size; | |
2259 | } else { | |
2260 | afs_FileOffsets[fd] = 0; | |
2261 | } | |
2262 | break; | |
2263 | } | |
2264 | } | |
2265 | if (fd == MAX_OSI_FILES) { | |
2266 | VN_RELE(fileP); | |
2267 | errno = ENFILE; | |
2268 | return -1; | |
2269 | } | |
2270 | ||
2271 | return fd; | |
2272 | } | |
2273 | ||
2274 | /* | |
2275 | * Create a file | |
2276 | */ | |
2277 | int | |
2278 | uafs_creat(char *path, int mode) | |
2279 | { | |
2280 | int rc; | |
2281 | rc = uafs_open(path, O_CREAT | O_WRONLY | O_TRUNC, mode); | |
2282 | return rc; | |
2283 | } | |
2284 | ||
2285 | int | |
2286 | uafs_creat_r(char *path, int mode) | |
2287 | { | |
2288 | int rc; | |
2289 | rc = uafs_open_r(path, O_CREAT | O_WRONLY | O_TRUNC, mode); | |
2290 | return rc; | |
2291 | } | |
2292 | ||
2293 | /* | |
2294 | * Write to a file | |
2295 | */ | |
2296 | int | |
2297 | uafs_write(int fd, char *buf, int len) | |
2298 | { | |
2299 | int retval; | |
2300 | AFS_GLOCK(); | |
2301 | retval = uafs_pwrite_r(fd, buf, len, afs_FileOffsets[fd]); | |
2302 | AFS_GUNLOCK(); | |
2303 | return retval; | |
2304 | } | |
2305 | ||
2306 | int | |
2307 | uafs_pwrite(int fd, char *buf, int len, off_t offset) | |
2308 | { | |
2309 | int retval; | |
2310 | AFS_GLOCK(); | |
2311 | retval = uafs_pwrite_r(fd, buf, len, offset); | |
2312 | AFS_GUNLOCK(); | |
2313 | return retval; | |
2314 | } | |
2315 | ||
2316 | int | |
2317 | uafs_pwrite_r(int fd, char *buf, int len, off_t offset) | |
2318 | { | |
2319 | int code; | |
2320 | struct usr_uio uio; | |
2321 | struct iovec iov[1]; | |
2322 | struct usr_vnode *fileP; | |
2323 | ||
2324 | /* | |
2325 | * Make sure this is an open file | |
2326 | */ | |
2327 | fileP = afs_FileTable[fd]; | |
2328 | if (fileP == NULL) { | |
2329 | errno = EBADF; | |
2330 | return -1; | |
2331 | } | |
2332 | ||
2333 | /* | |
2334 | * set up the uio buffer | |
2335 | */ | |
2336 | iov[0].iov_base = buf; | |
2337 | iov[0].iov_len = len; | |
2338 | uio.uio_iov = &iov[0]; | |
2339 | uio.uio_iovcnt = 1; | |
2340 | uio.uio_offset = offset; | |
2341 | uio.uio_segflg = 0; | |
2342 | uio.uio_fmode = FWRITE; | |
2343 | uio.uio_resid = len; | |
2344 | ||
2345 | /* | |
2346 | * do the write | |
2347 | */ | |
2348 | ||
2349 | code = afs_write(VTOAFS(fileP), &uio, afs_FileFlags[fd], get_user_struct()->u_cred, 0); | |
2350 | if (code) { | |
2351 | errno = code; | |
2352 | return -1; | |
2353 | } | |
2354 | ||
2355 | afs_FileOffsets[fd] = uio.uio_offset; | |
2356 | return (len - uio.uio_resid); | |
2357 | } | |
2358 | ||
2359 | /* | |
2360 | * Read from a file | |
2361 | */ | |
2362 | int | |
2363 | uafs_read(int fd, char *buf, int len) | |
2364 | { | |
2365 | int retval; | |
2366 | AFS_GLOCK(); | |
2367 | retval = uafs_pread_r(fd, buf, len, afs_FileOffsets[fd]); | |
2368 | AFS_GUNLOCK(); | |
2369 | return retval; | |
2370 | } | |
2371 | ||
2372 | int | |
2373 | uafs_pread_nocache(int fd, char *buf, int len, off_t offset) | |
2374 | { | |
2375 | int retval; | |
2376 | AFS_GLOCK(); | |
2377 | retval = uafs_pread_nocache_r(fd, buf, len, offset); | |
2378 | AFS_GUNLOCK(); | |
2379 | return retval; | |
2380 | } | |
2381 | ||
2382 | int | |
2383 | uafs_pread_nocache_r(int fd, char *buf, int len, off_t offset) | |
2384 | { | |
2385 | int code; | |
2386 | struct iovec iov[1]; | |
2387 | struct usr_vnode *fileP; | |
2388 | struct nocache_read_request *bparms; | |
2389 | struct usr_uio uio; | |
2390 | ||
2391 | /* | |
2392 | * Make sure this is an open file | |
2393 | */ | |
2394 | fileP = afs_FileTable[fd]; | |
2395 | if (fileP == NULL) { | |
2396 | errno = EBADF; | |
2397 | return -1; | |
2398 | } | |
2399 | ||
2400 | /* these get freed in PrefetchNoCache, so... */ | |
2401 | bparms = afs_osi_Alloc(sizeof(struct nocache_read_request)); | |
2402 | ||
2403 | code = afs_CreateReq(&bparms->areq, get_user_struct()->u_cred); | |
2404 | if (code) { | |
2405 | afs_DestroyReq(bparms->areq); | |
2406 | afs_osi_Free(bparms, sizeof(struct nocache_read_request)); | |
2407 | errno = code; | |
2408 | return -1; | |
2409 | } | |
2410 | ||
2411 | bparms->auio = &uio; | |
2412 | bparms->offset = offset; | |
2413 | bparms->length = len; | |
2414 | ||
2415 | /* | |
2416 | * set up the uio buffer | |
2417 | */ | |
2418 | iov[0].iov_base = buf; | |
2419 | iov[0].iov_len = len; | |
2420 | uio.uio_iov = &iov[0]; | |
2421 | uio.uio_iovcnt = 1; | |
2422 | uio.uio_offset = offset; | |
2423 | uio.uio_segflg = 0; | |
2424 | uio.uio_fmode = FREAD; | |
2425 | uio.uio_resid = len; | |
2426 | ||
2427 | /* | |
2428 | * do the read | |
2429 | */ | |
2430 | code = afs_PrefetchNoCache(VTOAFS(fileP), get_user_struct()->u_cred, | |
2431 | bparms); | |
2432 | ||
2433 | if (code) { | |
2434 | errno = code; | |
2435 | return -1; | |
2436 | } | |
2437 | ||
2438 | afs_FileOffsets[fd] = uio.uio_offset; | |
2439 | return (len - uio.uio_resid); | |
2440 | } | |
2441 | ||
2442 | int | |
2443 | uafs_pread(int fd, char *buf, int len, off_t offset) | |
2444 | { | |
2445 | int retval; | |
2446 | AFS_GLOCK(); | |
2447 | retval = uafs_pread_r(fd, buf, len, offset); | |
2448 | AFS_GUNLOCK(); | |
2449 | return retval; | |
2450 | } | |
2451 | ||
2452 | int | |
2453 | uafs_pread_r(int fd, char *buf, int len, off_t offset) | |
2454 | { | |
2455 | int code; | |
2456 | struct usr_uio uio; | |
2457 | struct iovec iov[1]; | |
2458 | struct usr_vnode *fileP; | |
2459 | ||
2460 | /* | |
2461 | * Make sure this is an open file | |
2462 | */ | |
2463 | fileP = afs_FileTable[fd]; | |
2464 | if (fileP == NULL) { | |
2465 | errno = EBADF; | |
2466 | return -1; | |
2467 | } | |
2468 | ||
2469 | /* | |
2470 | * set up the uio buffer | |
2471 | */ | |
2472 | iov[0].iov_base = buf; | |
2473 | iov[0].iov_len = len; | |
2474 | uio.uio_iov = &iov[0]; | |
2475 | uio.uio_iovcnt = 1; | |
2476 | uio.uio_offset = offset; | |
2477 | uio.uio_segflg = 0; | |
2478 | uio.uio_fmode = FREAD; | |
2479 | uio.uio_resid = len; | |
2480 | ||
2481 | /* | |
2482 | * do the read | |
2483 | */ | |
2484 | code = afs_read(VTOAFS(fileP), &uio, get_user_struct()->u_cred, 0); | |
2485 | if (code) { | |
2486 | errno = code; | |
2487 | return -1; | |
2488 | } | |
2489 | ||
2490 | afs_FileOffsets[fd] = uio.uio_offset; | |
2491 | return (len - uio.uio_resid); | |
2492 | } | |
2493 | ||
2494 | /* | |
2495 | * Copy the attributes of a file into a stat structure. | |
2496 | * | |
2497 | * NOTE: Caller must hold the global AFS lock. | |
2498 | */ | |
2499 | int | |
2500 | uafs_GetAttr(struct usr_vnode *vp, struct stat *stats) | |
2501 | { | |
2502 | int code; | |
2503 | struct usr_vattr attrs; | |
2504 | ||
2505 | AFS_ASSERT_GLOCK(); | |
2506 | ||
2507 | /* | |
2508 | * Get the attributes | |
2509 | */ | |
2510 | code = afs_getattr(VTOAFS(vp), &attrs, get_user_struct()->u_cred); | |
2511 | if (code != 0) { | |
2512 | return code; | |
2513 | } | |
2514 | ||
2515 | /* | |
2516 | * Copy the attributes, zero fields that aren't set | |
2517 | */ | |
2518 | memset((void *)stats, 0, sizeof(struct stat)); | |
2519 | stats->st_dev = -1; | |
2520 | stats->st_ino = attrs.va_nodeid; | |
2521 | stats->st_mode = attrs.va_mode; | |
2522 | stats->st_nlink = attrs.va_nlink; | |
2523 | stats->st_uid = attrs.va_uid; | |
2524 | stats->st_gid = attrs.va_gid; | |
2525 | stats->st_rdev = attrs.va_rdev; | |
2526 | stats->st_size = attrs.va_size; | |
2527 | stats->st_atime = attrs.va_atime.tv_sec; | |
2528 | stats->st_mtime = attrs.va_mtime.tv_sec; | |
2529 | stats->st_ctime = attrs.va_ctime.tv_sec; | |
2530 | /* preserve dv if possible */ | |
2531 | #if defined(HAVE_STRUCT_STAT_ST_CTIMESPEC) | |
2532 | stats->st_atimespec.tv_nsec = attrs.va_atime.tv_usec * 1000; | |
2533 | stats->st_mtimespec.tv_nsec = attrs.va_mtime.tv_usec * 1000; | |
2534 | stats->st_ctimespec.tv_nsec = attrs.va_ctime.tv_usec * 1000; | |
2535 | #elif defined(HAVE_STRUCT_STAT_ST_CTIMENSEC) | |
2536 | stats->st_atimensec = attrs.va_atime.tv_usec * 1000; | |
2537 | stats->st_mtimensec = attrs.va_mtime.tv_usec * 1000; | |
2538 | stats->st_ctimensec = attrs.va_ctime.tv_usec * 1000; | |
2539 | #endif | |
2540 | stats->st_blksize = attrs.va_blocksize; | |
2541 | stats->st_blocks = attrs.va_blocks; | |
2542 | ||
2543 | return 0; | |
2544 | } | |
2545 | ||
2546 | /* | |
2547 | * Get the attributes of a file, do follow links | |
2548 | */ | |
2549 | int | |
2550 | uafs_stat(char *path, struct stat *buf) | |
2551 | { | |
2552 | int retval; | |
2553 | AFS_GLOCK(); | |
2554 | retval = uafs_stat_r(path, buf); | |
2555 | AFS_GUNLOCK(); | |
2556 | return retval; | |
2557 | } | |
2558 | ||
2559 | int | |
2560 | uafs_stat_r(char *path, struct stat *buf) | |
2561 | { | |
2562 | int code; | |
2563 | struct vnode *vp; | |
2564 | ||
2565 | code = uafs_LookupName(path, afs_CurrentDir, &vp, 1, 0); | |
2566 | if (code != 0) { | |
2567 | errno = code; | |
2568 | return -1; | |
2569 | } | |
2570 | code = uafs_GetAttr(vp, buf); | |
2571 | VN_RELE(vp); | |
2572 | if (code) { | |
2573 | errno = code; | |
2574 | return -1; | |
2575 | } | |
2576 | return 0; | |
2577 | } | |
2578 | ||
2579 | /* | |
2580 | * Get the attributes of a file, don't follow links | |
2581 | */ | |
2582 | int | |
2583 | uafs_lstat(char *path, struct stat *buf) | |
2584 | { | |
2585 | int retval; | |
2586 | AFS_GLOCK(); | |
2587 | retval = uafs_lstat_r(path, buf); | |
2588 | AFS_GUNLOCK(); | |
2589 | return retval; | |
2590 | } | |
2591 | ||
2592 | int | |
2593 | uafs_lstat_r(char *path, struct stat *buf) | |
2594 | { | |
2595 | int code; | |
2596 | struct vnode *vp; | |
2597 | ||
2598 | code = uafs_LookupName(path, afs_CurrentDir, &vp, 0, 0); | |
2599 | if (code != 0) { | |
2600 | errno = code; | |
2601 | return -1; | |
2602 | } | |
2603 | code = uafs_GetAttr(vp, buf); | |
2604 | VN_RELE(vp); | |
2605 | if (code) { | |
2606 | errno = code; | |
2607 | return -1; | |
2608 | } | |
2609 | return 0; | |
2610 | } | |
2611 | ||
2612 | /* | |
2613 | * Get the attributes of an open file | |
2614 | */ | |
2615 | int | |
2616 | uafs_fstat(int fd, struct stat *buf) | |
2617 | { | |
2618 | int retval; | |
2619 | AFS_GLOCK(); | |
2620 | retval = uafs_fstat_r(fd, buf); | |
2621 | AFS_GUNLOCK(); | |
2622 | return retval; | |
2623 | } | |
2624 | ||
2625 | int | |
2626 | uafs_fstat_r(int fd, struct stat *buf) | |
2627 | { | |
2628 | int code; | |
2629 | struct vnode *vp; | |
2630 | ||
2631 | vp = afs_FileTable[fd]; | |
2632 | if (vp == NULL) { | |
2633 | errno = EBADF; | |
2634 | return -1; | |
2635 | } | |
2636 | code = uafs_GetAttr(vp, buf); | |
2637 | if (code) { | |
2638 | errno = code; | |
2639 | return -1; | |
2640 | } | |
2641 | return 0; | |
2642 | } | |
2643 | ||
2644 | /* | |
2645 | * change the permissions on a file | |
2646 | */ | |
2647 | int | |
2648 | uafs_chmod(char *path, int mode) | |
2649 | { | |
2650 | int retval; | |
2651 | AFS_GLOCK(); | |
2652 | retval = uafs_chmod_r(path, mode); | |
2653 | AFS_GUNLOCK(); | |
2654 | return retval; | |
2655 | } | |
2656 | ||
2657 | int | |
2658 | uafs_chmod_r(char *path, int mode) | |
2659 | { | |
2660 | int code; | |
2661 | struct vnode *vp; | |
2662 | struct usr_vattr attrs; | |
2663 | ||
2664 | code = uafs_LookupName(path, afs_CurrentDir, &vp, 1, 0); | |
2665 | if (code != 0) { | |
2666 | errno = code; | |
2667 | return -1; | |
2668 | } | |
2669 | usr_vattr_null(&attrs); | |
2670 | attrs.va_mask = ATTR_MODE; | |
2671 | attrs.va_mode = mode; | |
2672 | code = afs_setattr(VTOAFS(vp), &attrs, get_user_struct()->u_cred); | |
2673 | VN_RELE(vp); | |
2674 | if (code != 0) { | |
2675 | errno = code; | |
2676 | return -1; | |
2677 | } | |
2678 | return 0; | |
2679 | } | |
2680 | ||
2681 | /* | |
2682 | * change the permissions on an open file | |
2683 | */ | |
2684 | int | |
2685 | uafs_fchmod(int fd, int mode) | |
2686 | { | |
2687 | int retval; | |
2688 | AFS_GLOCK(); | |
2689 | retval = uafs_fchmod_r(fd, mode); | |
2690 | AFS_GUNLOCK(); | |
2691 | return retval; | |
2692 | } | |
2693 | ||
2694 | int | |
2695 | uafs_fchmod_r(int fd, int mode) | |
2696 | { | |
2697 | int code; | |
2698 | struct vnode *vp; | |
2699 | struct usr_vattr attrs; | |
2700 | ||
2701 | vp = afs_FileTable[fd]; | |
2702 | if (vp == NULL) { | |
2703 | errno = EBADF; | |
2704 | return -1; | |
2705 | } | |
2706 | usr_vattr_null(&attrs); | |
2707 | attrs.va_mask = ATTR_MODE; | |
2708 | attrs.va_mode = mode; | |
2709 | code = afs_setattr(VTOAFS(vp), &attrs, get_user_struct()->u_cred); | |
2710 | if (code != 0) { | |
2711 | errno = code; | |
2712 | return -1; | |
2713 | } | |
2714 | return 0; | |
2715 | } | |
2716 | ||
2717 | /* | |
2718 | * truncate a file | |
2719 | */ | |
2720 | int | |
2721 | uafs_truncate(char *path, int length) | |
2722 | { | |
2723 | int retval; | |
2724 | AFS_GLOCK(); | |
2725 | retval = uafs_truncate_r(path, length); | |
2726 | AFS_GUNLOCK(); | |
2727 | return retval; | |
2728 | } | |
2729 | ||
2730 | int | |
2731 | uafs_truncate_r(char *path, int length) | |
2732 | { | |
2733 | int code; | |
2734 | struct vnode *vp; | |
2735 | struct usr_vattr attrs; | |
2736 | ||
2737 | code = uafs_LookupName(path, afs_CurrentDir, &vp, 1, 0); | |
2738 | if (code != 0) { | |
2739 | errno = code; | |
2740 | return -1; | |
2741 | } | |
2742 | usr_vattr_null(&attrs); | |
2743 | attrs.va_mask = ATTR_SIZE; | |
2744 | attrs.va_size = length; | |
2745 | code = afs_setattr(VTOAFS(vp), &attrs, get_user_struct()->u_cred); | |
2746 | VN_RELE(vp); | |
2747 | if (code != 0) { | |
2748 | errno = code; | |
2749 | return -1; | |
2750 | } | |
2751 | return 0; | |
2752 | } | |
2753 | ||
2754 | /* | |
2755 | * truncate an open file | |
2756 | */ | |
2757 | int | |
2758 | uafs_ftruncate(int fd, int length) | |
2759 | { | |
2760 | int retval; | |
2761 | AFS_GLOCK(); | |
2762 | retval = uafs_ftruncate_r(fd, length); | |
2763 | AFS_GUNLOCK(); | |
2764 | return retval; | |
2765 | } | |
2766 | ||
2767 | int | |
2768 | uafs_ftruncate_r(int fd, int length) | |
2769 | { | |
2770 | int code; | |
2771 | struct vnode *vp; | |
2772 | struct usr_vattr attrs; | |
2773 | ||
2774 | vp = afs_FileTable[fd]; | |
2775 | if (vp == NULL) { | |
2776 | errno = EBADF; | |
2777 | return -1; | |
2778 | } | |
2779 | usr_vattr_null(&attrs); | |
2780 | attrs.va_mask = ATTR_SIZE; | |
2781 | attrs.va_size = length; | |
2782 | code = afs_setattr(VTOAFS(vp), &attrs, get_user_struct()->u_cred); | |
2783 | if (code != 0) { | |
2784 | errno = code; | |
2785 | return -1; | |
2786 | } | |
2787 | return 0; | |
2788 | } | |
2789 | ||
2790 | /* | |
2791 | * set the read/write file pointer of an open file | |
2792 | */ | |
2793 | int | |
2794 | uafs_lseek(int fd, int offset, int whence) | |
2795 | { | |
2796 | int retval; | |
2797 | AFS_GLOCK(); | |
2798 | retval = uafs_lseek_r(fd, offset, whence); | |
2799 | AFS_GUNLOCK(); | |
2800 | return retval; | |
2801 | } | |
2802 | ||
2803 | int | |
2804 | uafs_lseek_r(int fd, int offset, int whence) | |
2805 | { | |
2806 | int code; | |
2807 | int newpos; | |
2808 | struct usr_vattr attrs; | |
2809 | struct usr_vnode *vp; | |
2810 | ||
2811 | vp = afs_FileTable[fd]; | |
2812 | if (vp == NULL) { | |
2813 | errno = EBADF; | |
2814 | return -1; | |
2815 | } | |
2816 | switch (whence) { | |
2817 | case SEEK_CUR: | |
2818 | newpos = afs_FileOffsets[fd] + offset; | |
2819 | break; | |
2820 | case SEEK_SET: | |
2821 | newpos = offset; | |
2822 | break; | |
2823 | case SEEK_END: | |
2824 | code = afs_getattr(VTOAFS(vp), &attrs, get_user_struct()->u_cred); | |
2825 | if (code != 0) { | |
2826 | errno = code; | |
2827 | return -1; | |
2828 | } | |
2829 | newpos = attrs.va_size + offset; | |
2830 | break; | |
2831 | default: | |
2832 | errno = EINVAL; | |
2833 | return -1; | |
2834 | } | |
2835 | if (newpos < 0) { | |
2836 | errno = EINVAL; | |
2837 | return -1; | |
2838 | } | |
2839 | afs_FileOffsets[fd] = newpos; | |
2840 | return newpos; | |
2841 | } | |
2842 | ||
2843 | /* | |
2844 | * sync a file | |
2845 | */ | |
2846 | int | |
2847 | uafs_fsync(int fd) | |
2848 | { | |
2849 | int retval; | |
2850 | AFS_GLOCK(); | |
2851 | retval = uafs_fsync_r(fd); | |
2852 | AFS_GUNLOCK(); | |
2853 | return retval; | |
2854 | } | |
2855 | ||
2856 | int | |
2857 | uafs_fsync_r(int fd) | |
2858 | { | |
2859 | int code; | |
2860 | struct usr_vnode *fileP; | |
2861 | ||
2862 | ||
2863 | fileP = afs_FileTable[fd]; | |
2864 | if (fileP == NULL) { | |
2865 | errno = EBADF; | |
2866 | return -1; | |
2867 | } | |
2868 | ||
2869 | code = afs_fsync(VTOAFS(fileP), get_user_struct()->u_cred); | |
2870 | if (code != 0) { | |
2871 | errno = code; | |
2872 | return -1; | |
2873 | } | |
2874 | ||
2875 | return 0; | |
2876 | } | |
2877 | ||
2878 | /* | |
2879 | * Close a file | |
2880 | */ | |
2881 | int | |
2882 | uafs_close(int fd) | |
2883 | { | |
2884 | int retval; | |
2885 | AFS_GLOCK(); | |
2886 | retval = uafs_close_r(fd); | |
2887 | AFS_GUNLOCK(); | |
2888 | return retval; | |
2889 | } | |
2890 | ||
2891 | int | |
2892 | uafs_close_r(int fd) | |
2893 | { | |
2894 | int code; | |
2895 | struct usr_vnode *fileP; | |
2896 | ||
2897 | fileP = afs_FileTable[fd]; | |
2898 | if (fileP == NULL) { | |
2899 | errno = EBADF; | |
2900 | return -1; | |
2901 | } | |
2902 | afs_FileTable[fd] = NULL; | |
2903 | ||
2904 | code = afs_close(VTOAFS(fileP), afs_FileFlags[fd], get_user_struct()->u_cred); | |
2905 | VN_RELE(fileP); | |
2906 | if (code != 0) { | |
2907 | errno = code; | |
2908 | return -1; | |
2909 | } | |
2910 | ||
2911 | return 0; | |
2912 | } | |
2913 | ||
2914 | /* | |
2915 | * Create a hard link from the source to the target | |
2916 | * Note: file names may not end in a slash. | |
2917 | */ | |
2918 | int | |
2919 | uafs_link(char *existing, char *new) | |
2920 | { | |
2921 | int retval; | |
2922 | AFS_GLOCK(); | |
2923 | retval = uafs_link_r(existing, new); | |
2924 | AFS_GUNLOCK(); | |
2925 | return retval; | |
2926 | } | |
2927 | ||
2928 | int | |
2929 | uafs_link_r(char *existing, char *new) | |
2930 | { | |
2931 | int code; | |
2932 | struct usr_vnode *existP; | |
2933 | struct usr_vnode *dirP; | |
2934 | char *nameP; | |
2935 | ||
2936 | if (uafs_IsRoot(new)) { | |
2937 | return EACCES; | |
2938 | } | |
2939 | ||
2940 | /* | |
2941 | * Look up the existing node. | |
2942 | */ | |
2943 | code = uafs_LookupName(existing, afs_CurrentDir, &existP, 1, 0); | |
2944 | if (code != 0) { | |
2945 | errno = code; | |
2946 | return -1; | |
2947 | } | |
2948 | ||
2949 | /* | |
2950 | * Look up the parent directory. | |
2951 | */ | |
2952 | nameP = uafs_LastPath(new); | |
2953 | if (nameP != NULL) { | |
2954 | code = uafs_LookupParent(new, &dirP); | |
2955 | if (code != 0) { | |
2956 | VN_RELE(existP); | |
2957 | errno = code; | |
2958 | return -1; | |
2959 | } | |
2960 | } else { | |
2961 | dirP = afs_CurrentDir; | |
2962 | nameP = new; | |
2963 | VN_HOLD(dirP); | |
2964 | } | |
2965 | ||
2966 | /* | |
2967 | * Make sure the filename has at least one character | |
2968 | */ | |
2969 | if (*nameP == '\0') { | |
2970 | VN_RELE(existP); | |
2971 | VN_RELE(dirP); | |
2972 | errno = EINVAL; | |
2973 | return -1; | |
2974 | } | |
2975 | ||
2976 | /* | |
2977 | * Create the link | |
2978 | */ | |
2979 | code = afs_link(VTOAFS(existP), VTOAFS(dirP), nameP, get_user_struct()->u_cred); | |
2980 | VN_RELE(existP); | |
2981 | VN_RELE(dirP); | |
2982 | if (code != 0) { | |
2983 | errno = code; | |
2984 | return -1; | |
2985 | } | |
2986 | return 0; | |
2987 | } | |
2988 | ||
2989 | /* | |
2990 | * Create a symbolic link from the source to the target | |
2991 | * Note: file names may not end in a slash. | |
2992 | */ | |
2993 | int | |
2994 | uafs_symlink(char *target, char *source) | |
2995 | { | |
2996 | int retval; | |
2997 | AFS_GLOCK(); | |
2998 | retval = uafs_symlink_r(target, source); | |
2999 | AFS_GUNLOCK(); | |
3000 | return retval; | |
3001 | } | |
3002 | ||
3003 | int | |
3004 | uafs_symlink_r(char *target, char *source) | |
3005 | { | |
3006 | int code; | |
3007 | struct usr_vnode *dirP; | |
3008 | struct usr_vattr attrs; | |
3009 | char *nameP; | |
3010 | ||
3011 | if (uafs_IsRoot(source)) { | |
3012 | return EACCES; | |
3013 | } | |
3014 | ||
3015 | /* | |
3016 | * Look up the parent directory. | |
3017 | */ | |
3018 | nameP = uafs_LastPath(source); | |
3019 | if (nameP != NULL) { | |
3020 | code = uafs_LookupParent(source, &dirP); | |
3021 | if (code != 0) { | |
3022 | errno = code; | |
3023 | return -1; | |
3024 | } | |
3025 | } else { | |
3026 | dirP = afs_CurrentDir; | |
3027 | nameP = source; | |
3028 | VN_HOLD(dirP); | |
3029 | } | |
3030 | ||
3031 | /* | |
3032 | * Make sure the filename has at least one character | |
3033 | */ | |
3034 | if (*nameP == '\0') { | |
3035 | VN_RELE(dirP); | |
3036 | errno = EINVAL; | |
3037 | return -1; | |
3038 | } | |
3039 | ||
3040 | /* | |
3041 | * Create the link | |
3042 | */ | |
3043 | usr_vattr_null(&attrs); | |
3044 | attrs.va_type = VLNK; | |
3045 | attrs.va_mode = 0777; | |
3046 | attrs.va_uid = afs_cr_uid(get_user_struct()->u_cred); | |
3047 | attrs.va_gid = afs_cr_gid(get_user_struct()->u_cred); | |
3048 | code = afs_symlink(VTOAFS(dirP), nameP, &attrs, target, NULL, | |
3049 | get_user_struct()->u_cred); | |
3050 | VN_RELE(dirP); | |
3051 | if (code != 0) { | |
3052 | errno = code; | |
3053 | return -1; | |
3054 | } | |
3055 | return 0; | |
3056 | } | |
3057 | ||
3058 | /* | |
3059 | * Read a symbolic link into the buffer | |
3060 | */ | |
3061 | int | |
3062 | uafs_readlink(char *path, char *buf, int len) | |
3063 | { | |
3064 | int retval; | |
3065 | AFS_GLOCK(); | |
3066 | retval = uafs_readlink_r(path, buf, len); | |
3067 | AFS_GUNLOCK(); | |
3068 | return retval; | |
3069 | } | |
3070 | ||
3071 | int | |
3072 | uafs_readlink_r(char *path, char *buf, int len) | |
3073 | { | |
3074 | int code; | |
3075 | struct usr_vnode *vp; | |
3076 | struct usr_uio uio; | |
3077 | struct iovec iov[1]; | |
3078 | ||
3079 | code = uafs_LookupName(path, afs_CurrentDir, &vp, 0, 0); | |
3080 | if (code != 0) { | |
3081 | errno = code; | |
3082 | return -1; | |
3083 | } | |
3084 | ||
3085 | if (vp->v_type != VLNK) { | |
3086 | VN_RELE(vp); | |
3087 | errno = EINVAL; | |
3088 | return -1; | |
3089 | } | |
3090 | ||
3091 | /* | |
3092 | * set up the uio buffer | |
3093 | */ | |
3094 | iov[0].iov_base = buf; | |
3095 | iov[0].iov_len = len; | |
3096 | uio.uio_iov = &iov[0]; | |
3097 | uio.uio_iovcnt = 1; | |
3098 | uio.uio_offset = 0; | |
3099 | uio.uio_segflg = 0; | |
3100 | uio.uio_fmode = FREAD; | |
3101 | uio.uio_resid = len; | |
3102 | ||
3103 | /* | |
3104 | * Read the the link | |
3105 | */ | |
3106 | code = afs_readlink(VTOAFS(vp), &uio, get_user_struct()->u_cred); | |
3107 | VN_RELE(vp); | |
3108 | if (code) { | |
3109 | errno = code; | |
3110 | return -1; | |
3111 | } | |
3112 | ||
3113 | /* | |
3114 | * return the number of bytes read | |
3115 | */ | |
3116 | return (len - uio.uio_resid); | |
3117 | } | |
3118 | ||
3119 | /* | |
3120 | * Remove a file (or directory) | |
3121 | * Note: file name may not end in a slash. | |
3122 | */ | |
3123 | int | |
3124 | uafs_unlink(char *path) | |
3125 | { | |
3126 | int retval; | |
3127 | AFS_GLOCK(); | |
3128 | retval = uafs_unlink_r(path); | |
3129 | AFS_GUNLOCK(); | |
3130 | return retval; | |
3131 | } | |
3132 | ||
3133 | int | |
3134 | uafs_unlink_r(char *path) | |
3135 | { | |
3136 | int code; | |
3137 | struct usr_vnode *dirP; | |
3138 | char *nameP; | |
3139 | ||
3140 | if (uafs_IsRoot(path)) { | |
3141 | return EACCES; | |
3142 | } | |
3143 | ||
3144 | /* | |
3145 | * Look up the parent directory. | |
3146 | */ | |
3147 | nameP = uafs_LastPath(path); | |
3148 | if (nameP != NULL) { | |
3149 | code = uafs_LookupParent(path, &dirP); | |
3150 | if (code != 0) { | |
3151 | errno = code; | |
3152 | return -1; | |
3153 | } | |
3154 | } else { | |
3155 | dirP = afs_CurrentDir; | |
3156 | nameP = path; | |
3157 | VN_HOLD(dirP); | |
3158 | } | |
3159 | ||
3160 | /* | |
3161 | * Make sure the filename has at least one character | |
3162 | */ | |
3163 | if (*nameP == '\0') { | |
3164 | VN_RELE(dirP); | |
3165 | errno = EINVAL; | |
3166 | return -1; | |
3167 | } | |
3168 | ||
3169 | /* | |
3170 | * Remove the file | |
3171 | */ | |
3172 | code = afs_remove(VTOAFS(dirP), nameP, get_user_struct()->u_cred); | |
3173 | VN_RELE(dirP); | |
3174 | if (code != 0) { | |
3175 | errno = code; | |
3176 | return -1; | |
3177 | } | |
3178 | ||
3179 | return 0; | |
3180 | } | |
3181 | ||
3182 | /* | |
3183 | * Rename a file (or directory) | |
3184 | */ | |
3185 | int | |
3186 | uafs_rename(char *old, char *new) | |
3187 | { | |
3188 | int retval; | |
3189 | AFS_GLOCK(); | |
3190 | retval = uafs_rename_r(old, new); | |
3191 | AFS_GUNLOCK(); | |
3192 | return retval; | |
3193 | } | |
3194 | ||
3195 | int | |
3196 | uafs_rename_r(char *old, char *new) | |
3197 | { | |
3198 | int code; | |
3199 | char *onameP; | |
3200 | char *nnameP; | |
3201 | struct usr_vnode *odirP; | |
3202 | struct usr_vnode *ndirP; | |
3203 | ||
3204 | if (uafs_IsRoot(new)) { | |
3205 | return EACCES; | |
3206 | } | |
3207 | ||
3208 | /* | |
3209 | * Look up the parent directories. | |
3210 | */ | |
3211 | onameP = uafs_LastPath(old); | |
3212 | if (onameP != NULL) { | |
3213 | code = uafs_LookupParent(old, &odirP); | |
3214 | if (code != 0) { | |
3215 | errno = code; | |
3216 | return -1; | |
3217 | } | |
3218 | } else { | |
3219 | odirP = afs_CurrentDir; | |
3220 | onameP = old; | |
3221 | VN_HOLD(odirP); | |
3222 | } | |
3223 | nnameP = uafs_LastPath(new); | |
3224 | if (nnameP != NULL) { | |
3225 | code = uafs_LookupParent(new, &ndirP); | |
3226 | if (code != 0) { | |
3227 | errno = code; | |
3228 | return -1; | |
3229 | } | |
3230 | } else { | |
3231 | ndirP = afs_CurrentDir; | |
3232 | nnameP = new; | |
3233 | VN_HOLD(ndirP); | |
3234 | } | |
3235 | ||
3236 | /* | |
3237 | * Make sure the filename has at least one character | |
3238 | */ | |
3239 | if (*onameP == '\0' || *nnameP == '\0') { | |
3240 | VN_RELE(odirP); | |
3241 | VN_RELE(ndirP); | |
3242 | errno = EINVAL; | |
3243 | return -1; | |
3244 | } | |
3245 | ||
3246 | /* | |
3247 | * Rename the file | |
3248 | */ | |
3249 | code = afs_rename(VTOAFS(odirP), onameP, VTOAFS(ndirP), nnameP, get_user_struct()->u_cred); | |
3250 | VN_RELE(odirP); | |
3251 | VN_RELE(ndirP); | |
3252 | if (code != 0) { | |
3253 | errno = code; | |
3254 | return -1; | |
3255 | } | |
3256 | ||
3257 | return 0; | |
3258 | } | |
3259 | ||
3260 | /* | |
3261 | * Remove a or directory | |
3262 | * Note: file name may not end in a slash. | |
3263 | */ | |
3264 | int | |
3265 | uafs_rmdir(char *path) | |
3266 | { | |
3267 | int retval; | |
3268 | AFS_GLOCK(); | |
3269 | retval = uafs_rmdir_r(path); | |
3270 | AFS_GUNLOCK(); | |
3271 | return retval; | |
3272 | } | |
3273 | ||
3274 | int | |
3275 | uafs_rmdir_r(char *path) | |
3276 | { | |
3277 | int code; | |
3278 | struct usr_vnode *dirP; | |
3279 | char *nameP; | |
3280 | ||
3281 | if (uafs_IsRoot(path)) { | |
3282 | return EACCES; | |
3283 | } | |
3284 | ||
3285 | /* | |
3286 | * Look up the parent directory. | |
3287 | */ | |
3288 | nameP = uafs_LastPath(path); | |
3289 | if (nameP != NULL) { | |
3290 | code = uafs_LookupParent(path, &dirP); | |
3291 | if (code != 0) { | |
3292 | errno = code; | |
3293 | return -1; | |
3294 | } | |
3295 | } else { | |
3296 | dirP = afs_CurrentDir; | |
3297 | nameP = path; | |
3298 | VN_HOLD(dirP); | |
3299 | } | |
3300 | ||
3301 | /* | |
3302 | * Make sure the directory name has at least one character | |
3303 | */ | |
3304 | if (*nameP == '\0') { | |
3305 | VN_RELE(dirP); | |
3306 | errno = EINVAL; | |
3307 | return -1; | |
3308 | } | |
3309 | ||
3310 | /* | |
3311 | * Remove the directory | |
3312 | */ | |
3313 | code = afs_rmdir(VTOAFS(dirP), nameP, get_user_struct()->u_cred); | |
3314 | VN_RELE(dirP); | |
3315 | if (code != 0) { | |
3316 | errno = code; | |
3317 | return -1; | |
3318 | } | |
3319 | ||
3320 | return 0; | |
3321 | } | |
3322 | ||
3323 | /* | |
3324 | * Flush a file from the AFS cache | |
3325 | */ | |
3326 | int | |
3327 | uafs_FlushFile(char *path) | |
3328 | { | |
3329 | int code; | |
3330 | struct afs_ioctl iob; | |
3331 | ||
3332 | iob.in = NULL; | |
3333 | iob.in_size = 0; | |
3334 | iob.out = NULL; | |
3335 | iob.out_size = 0; | |
3336 | ||
3337 | code = | |
3338 | call_syscall(AFSCALL_PIOCTL, (long)path, _VICEIOCTL(6), (long)&iob, 0, | |
3339 | 0); | |
3340 | if (code != 0) { | |
3341 | errno = code; | |
3342 | return -1; | |
3343 | } | |
3344 | ||
3345 | return 0; | |
3346 | } | |
3347 | ||
3348 | int | |
3349 | uafs_FlushFile_r(char *path) | |
3350 | { | |
3351 | int retval; | |
3352 | AFS_GUNLOCK(); | |
3353 | retval = uafs_FlushFile(path); | |
3354 | AFS_GLOCK(); | |
3355 | return retval; | |
3356 | } | |
3357 | ||
3358 | /* | |
3359 | * open a directory | |
3360 | */ | |
3361 | usr_DIR * | |
3362 | uafs_opendir(char *path) | |
3363 | { | |
3364 | usr_DIR *retval; | |
3365 | AFS_GLOCK(); | |
3366 | retval = uafs_opendir_r(path); | |
3367 | AFS_GUNLOCK(); | |
3368 | return retval; | |
3369 | } | |
3370 | ||
3371 | usr_DIR * | |
3372 | uafs_opendir_r(char *path) | |
3373 | { | |
3374 | usr_DIR *dirp; | |
3375 | struct usr_vnode *fileP; | |
3376 | int fd; | |
3377 | ||
3378 | /* | |
3379 | * Open the directory for reading | |
3380 | */ | |
3381 | fd = uafs_open_r(path, O_RDONLY, 0); | |
3382 | if (fd < 0) { | |
3383 | return NULL; | |
3384 | } | |
3385 | ||
3386 | fileP = afs_FileTable[fd]; | |
3387 | if (fileP == NULL) { | |
3388 | return NULL; | |
3389 | } | |
3390 | ||
3391 | if (fileP->v_type != VDIR) { | |
3392 | uafs_close_r(fd); | |
3393 | errno = ENOTDIR; | |
3394 | return NULL; | |
3395 | } | |
3396 | ||
3397 | /* | |
3398 | * Set up the directory structures | |
3399 | */ | |
3400 | dirp = afs_osi_Alloc(sizeof(usr_DIR) + USR_DIRSIZE + | |
3401 | sizeof(struct usr_dirent)); | |
3402 | usr_assert(dirp != NULL); | |
3403 | dirp->dd_buf = (char *)(dirp + 1); | |
3404 | dirp->dd_fd = fd; | |
3405 | dirp->dd_loc = 0; | |
3406 | dirp->dd_size = 0; | |
3407 | ||
3408 | errno = 0; | |
3409 | return dirp; | |
3410 | } | |
3411 | ||
3412 | /* | |
3413 | * Read directory entries into a file system independent format. | |
3414 | * This routine was developed to support AFS cache consistency testing. | |
3415 | * You should use uafs_readdir instead. | |
3416 | */ | |
3417 | int | |
3418 | uafs_getdents(int fd, struct min_direct *buf, int len) | |
3419 | { | |
3420 | int retval; | |
3421 | AFS_GLOCK(); | |
3422 | retval = uafs_getdents_r(fd, buf, len); | |
3423 | AFS_GUNLOCK(); | |
3424 | return retval; | |
3425 | } | |
3426 | ||
3427 | int | |
3428 | uafs_getdents_r(int fd, struct min_direct *buf, int len) | |
3429 | { | |
3430 | int code; | |
3431 | struct usr_uio uio; | |
3432 | struct usr_vnode *vp; | |
3433 | struct iovec iov[1]; | |
3434 | ||
3435 | /* | |
3436 | * Make sure this is an open file | |
3437 | */ | |
3438 | vp = afs_FileTable[fd]; | |
3439 | if (vp == NULL) { | |
3440 | AFS_GUNLOCK(); | |
3441 | errno = EBADF; | |
3442 | return -1; | |
3443 | } | |
3444 | ||
3445 | /* | |
3446 | * set up the uio buffer | |
3447 | */ | |
3448 | iov[0].iov_base = (char *)buf; | |
3449 | iov[0].iov_len = len; | |
3450 | uio.uio_iov = &iov[0]; | |
3451 | uio.uio_iovcnt = 1; | |
3452 | uio.uio_offset = afs_FileOffsets[fd]; | |
3453 | uio.uio_segflg = 0; | |
3454 | uio.uio_fmode = FREAD; | |
3455 | uio.uio_resid = len; | |
3456 | ||
3457 | /* | |
3458 | * read the next chunk from the directory | |
3459 | */ | |
3460 | code = afs_readdir(VTOAFS(vp), &uio, get_user_struct()->u_cred); | |
3461 | if (code != 0) { | |
3462 | errno = code; | |
3463 | return -1; | |
3464 | } | |
3465 | ||
3466 | afs_FileOffsets[fd] = uio.uio_offset; | |
3467 | return (len - uio.uio_resid); | |
3468 | } | |
3469 | ||
3470 | /* | |
3471 | * read from a directory (names only) | |
3472 | */ | |
3473 | struct usr_dirent * | |
3474 | uafs_readdir(usr_DIR * dirp) | |
3475 | { | |
3476 | struct usr_dirent *retval; | |
3477 | AFS_GLOCK(); | |
3478 | retval = uafs_readdir_r(dirp); | |
3479 | AFS_GUNLOCK(); | |
3480 | return retval; | |
3481 | } | |
3482 | ||
3483 | struct usr_dirent * | |
3484 | uafs_readdir_r(usr_DIR * dirp) | |
3485 | { | |
3486 | int code; | |
3487 | int len; | |
3488 | struct usr_uio uio; | |
3489 | struct usr_vnode *vp; | |
3490 | struct iovec iov[1]; | |
3491 | struct usr_dirent *direntP; | |
3492 | struct min_direct *directP; | |
3493 | ||
3494 | if (!dirp) { | |
3495 | errno = EBADF; | |
3496 | return NULL; | |
3497 | } | |
3498 | ||
3499 | /* | |
3500 | * Make sure this is an open file | |
3501 | */ | |
3502 | vp = afs_FileTable[dirp->dd_fd]; | |
3503 | if (vp == NULL) { | |
3504 | errno = EBADF; | |
3505 | return NULL; | |
3506 | } | |
3507 | ||
3508 | /* | |
3509 | * If there are no entries in the stream buffer | |
3510 | * then read another chunk | |
3511 | */ | |
3512 | directP = (struct min_direct *)(dirp->dd_buf + dirp->dd_loc); | |
3513 | if (dirp->dd_size == 0 || directP->d_fileno == 0) { | |
3514 | /* | |
3515 | * set up the uio buffer | |
3516 | */ | |
3517 | iov[0].iov_base = dirp->dd_buf; | |
3518 | iov[0].iov_len = USR_DIRSIZE; | |
3519 | uio.uio_iov = &iov[0]; | |
3520 | uio.uio_iovcnt = 1; | |
3521 | uio.uio_offset = afs_FileOffsets[dirp->dd_fd]; | |
3522 | uio.uio_segflg = 0; | |
3523 | uio.uio_fmode = FREAD; | |
3524 | uio.uio_resid = USR_DIRSIZE; | |
3525 | ||
3526 | /* | |
3527 | * read the next chunk from the directory | |
3528 | */ | |
3529 | code = afs_readdir(VTOAFS(vp), &uio, get_user_struct()->u_cred); | |
3530 | if (code != 0) { | |
3531 | errno = code; | |
3532 | return NULL; | |
3533 | } | |
3534 | afs_FileOffsets[dirp->dd_fd] = uio.uio_offset; | |
3535 | ||
3536 | dirp->dd_size = USR_DIRSIZE - iov[0].iov_len; | |
3537 | dirp->dd_loc = 0; | |
3538 | directP = (struct min_direct *)(dirp->dd_buf + dirp->dd_loc); | |
3539 | } | |
3540 | ||
3541 | /* | |
3542 | * Check for end of file | |
3543 | */ | |
3544 | if (dirp->dd_size == 0 || directP->d_fileno == 0) { | |
3545 | errno = 0; | |
3546 | return NULL; | |
3547 | } | |
3548 | len = ((sizeof(struct min_direct) + directP->d_namlen + 4) & (~3)); | |
3549 | usr_assert(len <= dirp->dd_size); | |
3550 | ||
3551 | /* | |
3552 | * Copy the next entry into the usr_dirent structure and advance | |
3553 | */ | |
3554 | direntP = (struct usr_dirent *)(dirp->dd_buf + USR_DIRSIZE); | |
3555 | direntP->d_ino = directP->d_fileno; | |
3556 | direntP->d_off = direntP->d_reclen; | |
3557 | direntP->d_reclen = | |
3558 | sizeof(struct usr_dirent) - MAXNAMLEN + directP->d_namlen + 1; | |
3559 | memcpy(&direntP->d_name[0], (void *)(directP + 1), directP->d_namlen); | |
3560 | direntP->d_name[directP->d_namlen] = '\0'; | |
3561 | dirp->dd_loc += len; | |
3562 | dirp->dd_size -= len; | |
3563 | ||
3564 | return direntP; | |
3565 | } | |
3566 | ||
3567 | /* | |
3568 | * Close a directory | |
3569 | */ | |
3570 | int | |
3571 | uafs_closedir(usr_DIR * dirp) | |
3572 | { | |
3573 | int retval; | |
3574 | AFS_GLOCK(); | |
3575 | retval = uafs_closedir_r(dirp); | |
3576 | AFS_GUNLOCK(); | |
3577 | return retval; | |
3578 | } | |
3579 | ||
3580 | int | |
3581 | uafs_closedir_r(usr_DIR * dirp) | |
3582 | { | |
3583 | int fd; | |
3584 | int rc; | |
3585 | ||
3586 | if (!dirp) { | |
3587 | errno = EBADF; | |
3588 | return -1; | |
3589 | } | |
3590 | ||
3591 | fd = dirp->dd_fd; | |
3592 | afs_osi_Free((char *)dirp, | |
3593 | sizeof(usr_DIR) + USR_DIRSIZE + sizeof(struct usr_dirent)); | |
3594 | rc = uafs_close_r(fd); | |
3595 | return rc; | |
3596 | } | |
3597 | ||
3598 | /* | |
3599 | * Destroy AFS credentials from the kernel cache | |
3600 | */ | |
3601 | int | |
3602 | uafs_unlog(void) | |
3603 | { | |
3604 | int code; | |
3605 | ||
3606 | usr_mutex_lock(&osi_authenticate_lock); | |
3607 | code = ktc_ForgetAllTokens(); | |
3608 | usr_mutex_unlock(&osi_authenticate_lock); | |
3609 | return code; | |
3610 | } | |
3611 | ||
3612 | int | |
3613 | uafs_unlog_r(void) | |
3614 | { | |
3615 | int retval; | |
3616 | AFS_GUNLOCK(); | |
3617 | retval = uafs_unlog(); | |
3618 | AFS_GLOCK(); | |
3619 | return retval; | |
3620 | } | |
3621 | ||
3622 | /* | |
3623 | * Strip the AFS mount point from a pathname string. Return | |
3624 | * NULL if the path is a relative pathname or if the path | |
3625 | * doesn't start with the AFS mount point string. | |
3626 | */ | |
3627 | char * | |
3628 | uafs_afsPathName(char *path) | |
3629 | { | |
3630 | char *p; | |
3631 | char lastchar; | |
3632 | int i; | |
3633 | ||
3634 | if (path[0] != '/') | |
3635 | return NULL; | |
3636 | lastchar = '/'; | |
3637 | for (i = 1, p = path + 1; *p != '\0'; p++) { | |
3638 | /* Ignore duplicate slashes */ | |
3639 | if (*p == '/' && lastchar == '/') | |
3640 | continue; | |
3641 | /* Is this a subdirectory of the AFS mount point? */ | |
3642 | if (afs_mountDir[i] == '\0' && *p == '/') { | |
3643 | /* strip leading slashes */ | |
3644 | while (*(++p) == '/'); | |
3645 | return p; | |
3646 | } | |
3647 | /* Reject paths that are not within AFS */ | |
3648 | if (*p != afs_mountDir[i]) | |
3649 | return NULL; | |
3650 | lastchar = *p; | |
3651 | i++; | |
3652 | } | |
3653 | /* Is this the AFS mount point? */ | |
3654 | if (afs_mountDir[i] == '\0') { | |
3655 | usr_assert(*p == '\0'); | |
3656 | return p; | |
3657 | } | |
3658 | return NULL; | |
3659 | } | |
3660 | ||
3661 | /* | |
3662 | * uafs_getcellstatus | |
3663 | * get the cell status | |
3664 | */ | |
3665 | int | |
3666 | uafs_getcellstatus(char *cell, afs_int32 * status) | |
3667 | { | |
3668 | int rc; | |
3669 | struct afs_ioctl iob; | |
3670 | ||
3671 | iob.in = cell; | |
3672 | iob.in_size = strlen(cell) + 1; | |
3673 | iob.out = 0; | |
3674 | iob.out_size = 0; | |
3675 | ||
3676 | rc = call_syscall(AFSCALL_PIOCTL, /*path */ 0, _VICEIOCTL(35), | |
3677 | (long)&iob, 0, 0); | |
3678 | ||
3679 | if (rc < 0) { | |
3680 | errno = rc; | |
3681 | return -1; | |
3682 | } | |
3683 | ||
3684 | *status = (intptr_t)iob.out; | |
3685 | return 0; | |
3686 | } | |
3687 | ||
3688 | /* | |
3689 | * uafs_getvolquota | |
3690 | * Get quota of volume associated with path | |
3691 | */ | |
3692 | int | |
3693 | uafs_getvolquota(char *path, afs_int32 * BlocksInUse, afs_int32 * MaxQuota) | |
3694 | { | |
3695 | int rc; | |
3696 | struct afs_ioctl iob; | |
3697 | VolumeStatus status; | |
3698 | ||
3699 | iob.in = 0; | |
3700 | iob.in_size = 0; | |
3701 | iob.out = (char *)&status; | |
3702 | iob.out_size = sizeof status; | |
3703 | ||
3704 | rc = call_syscall(AFSCALL_PIOCTL, (long)path, _VICEIOCTL(4), (long)&iob, | |
3705 | 0, 0); | |
3706 | ||
3707 | if (rc != 0) { | |
3708 | errno = rc; | |
3709 | return -1; | |
3710 | } | |
3711 | ||
3712 | *BlocksInUse = status.BlocksInUse; | |
3713 | *MaxQuota = status.MaxQuota; | |
3714 | return 0; | |
3715 | } | |
3716 | ||
3717 | /* | |
3718 | * uafs_setvolquota | |
3719 | * Set quota of volume associated with path | |
3720 | */ | |
3721 | int | |
3722 | uafs_setvolquota(char *path, afs_int32 MaxQuota) | |
3723 | { | |
3724 | int rc; | |
3725 | struct afs_ioctl iob; | |
3726 | VolumeStatus status = { 0 }; | |
3727 | ||
3728 | iob.in = (char *)&status; | |
3729 | iob.in_size = sizeof status; | |
3730 | iob.out = 0; | |
3731 | iob.out_size = 0; | |
3732 | ||
3733 | status.MaxQuota = MaxQuota; | |
3734 | status.MinQuota = -1; | |
3735 | ||
3736 | rc = call_syscall(AFSCALL_PIOCTL, (long)path, _VICEIOCTL(5), (long)&iob, | |
3737 | 0, 0); | |
3738 | ||
3739 | if (rc != 0) { | |
3740 | errno = rc; | |
3741 | return -1; | |
3742 | } | |
3743 | ||
3744 | return 0; | |
3745 | } | |
3746 | ||
3747 | /* | |
3748 | * uafs_statmountpoint | |
3749 | * Determine whether a dir. is a mount point or not | |
3750 | * return 1 if mount point, 0 if not | |
3751 | */ | |
3752 | int | |
3753 | uafs_statmountpoint(char *path) | |
3754 | { | |
3755 | int retval; | |
3756 | ||
3757 | AFS_GLOCK(); | |
3758 | retval = uafs_statmountpoint_r(path); | |
3759 | AFS_GUNLOCK(); | |
3760 | return retval; | |
3761 | } | |
3762 | ||
3763 | int | |
3764 | uafs_statmountpoint_r(char *path) | |
3765 | { | |
3766 | int code; | |
3767 | struct vnode *vp; | |
3768 | struct vcache *avc; | |
3769 | int r; | |
3770 | ||
3771 | code = uafs_LookupName(path, afs_CurrentDir, &vp, 0, 1); | |
3772 | if (code != 0) { | |
3773 | errno = code; | |
3774 | return -1; | |
3775 | } | |
3776 | ||
3777 | avc = VTOAFS(vp); | |
3778 | ||
3779 | r = avc->mvstat; | |
3780 | VN_RELE(vp); | |
3781 | return r; | |
3782 | } | |
3783 | ||
3784 | /* | |
3785 | * uafs_getRights | |
3786 | * Get a list of rights for the current user on path. | |
3787 | */ | |
3788 | int | |
3789 | uafs_access(char *path, int flags) | |
3790 | { | |
3791 | int code; | |
3792 | struct vnode *vp; | |
3793 | int fileMode = 0; | |
3794 | ||
3795 | if (flags & R_OK) { | |
3796 | fileMode |= VREAD; | |
3797 | } | |
3798 | if (flags & W_OK) { | |
3799 | fileMode |= VWRITE; | |
3800 | } | |
3801 | if (flags & X_OK) { | |
3802 | fileMode |= VEXEC; | |
3803 | } | |
3804 | ||
3805 | AFS_GLOCK(); | |
3806 | code = uafs_LookupName(path, afs_CurrentDir, &vp, 1, 0); | |
3807 | if (code != 0) { | |
3808 | errno = code; | |
3809 | AFS_GUNLOCK(); | |
3810 | return -1; | |
3811 | } | |
3812 | ||
3813 | code = afs_access(VTOAFS(vp), fileMode, get_user_struct()->u_cred); | |
3814 | VN_RELE(vp); | |
3815 | ||
3816 | if (code != 0) | |
3817 | errno = code; | |
3818 | ||
3819 | AFS_GUNLOCK(); | |
3820 | return code ? -1 : 0; | |
3821 | } | |
3822 | ||
3823 | /* | |
3824 | * uafs_getRights | |
3825 | * Get a list of rights for the current user on path. | |
3826 | */ | |
3827 | int | |
3828 | uafs_getRights(char *path) | |
3829 | { | |
3830 | int code; | |
3831 | struct vnode *vp; | |
3832 | int afs_rights; | |
3833 | ||
3834 | AFS_GLOCK(); | |
3835 | code = uafs_LookupName(path, afs_CurrentDir, &vp, 1, 0); | |
3836 | if (code != 0) { | |
3837 | errno = code; | |
3838 | AFS_GUNLOCK(); | |
3839 | return -1; | |
3840 | } | |
3841 | ||
3842 | afs_rights = | |
3843 | PRSFS_READ | PRSFS_WRITE | PRSFS_INSERT | PRSFS_LOOKUP | PRSFS_DELETE | |
3844 | | PRSFS_LOCK | PRSFS_ADMINISTER; | |
3845 | ||
3846 | afs_rights = afs_getRights(VTOAFS(vp), afs_rights, get_user_struct()->u_cred); | |
3847 | ||
3848 | AFS_GUNLOCK(); | |
3849 | return afs_rights; | |
3850 | } | |
3851 | #endif /* UKERNEL */ |