2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
11 * osi_vfsops.c for IRIX
13 #include "../afs/param.h" /* Should be always first */
14 #include "../afs/sysincludes.h" /* Standard vendor system headers */
15 #include "../afs/afsincludes.h" /* Afs-based standard headers */
16 #include "../afs/afs_stats.h" /* statistics stuff */
17 #include "sys/syssgi.h"
20 struct vfs *afs_globalVFS = 0;
21 struct vcache *afs_globalVp = 0;
23 #ifdef AFS_SGI_VNODE_GLUE
24 #include <sys/invent.h>
26 mutex_t afs_init_kern_lock;
30 #define SYS_setgroups SGI_SETGROUPS
32 int (*nfs_rfsdisptab_v2)() = NULL;
37 #include "sys/mload.h"
38 char *Afs_mversion = M_VERSION;
40 extern int (*setgroupsp)(int, gid_t *);
41 extern struct afs_lock afs_xvcache;
42 extern int idbg_afsuser();
43 extern void afs_mpservice(void *);
46 * AFS fs initialization - we also plug system calls here
48 #define NewSystemCall(n,f,a) \
49 syscallsw[ABI_IRIX5].sc_sysent[(n)-1000].sy_narg = a; \
50 syscallsw[ABI_IRIX5].sc_sysent[(n)-1000].sy_call = f; \
51 syscallsw[ABI_IRIX5].sc_sysent[(n)-1000].sy_flags = 0;
52 extern struct vfsops Afs_vfsops, *afs_vfsopsp;
53 extern struct vnodeops Afs_vnodeops, *afs_vnodeopsp;
54 extern void (*afsidestroyp)(struct inode *);
55 extern void (*afsdptoipp)(struct efs_dinode *, struct inode *);
56 extern void (*afsiptodpp)(struct inode *, struct efs_dinode *);
57 extern void afsidestroy(struct inode *);
58 extern void afsdptoip(struct efs_dinode *, struct inode *);
59 extern void afsiptodp(struct inode *, struct efs_dinode *);
60 extern int (*idbg_prafsnodep)(vnode_t *);
61 extern int (*idbg_afsvfslistp)(void);
62 extern int idbg_prafsnode(vnode_t *);
63 extern int idbg_afsvfslist(void);
67 Afs_init(struct vfssw *vswp, int fstype)
69 extern int Afs_syscall(), Afs_xsetgroups(), afs_pioctl(), afs_setpag();
70 extern int icreate(), iopen(), iinc(), idec();
71 #ifdef AFS_SGI_XFS_IOPS_ENV
74 extern int iread(), iwrite();
81 #ifdef AFS_SGI_VNODE_GLUE
82 /* Synchronize doing NUMA test. */
83 mutex_init(&afs_init_kern_lock, MUTEX_DEFAULT, "init_kern_lock");
86 * set up pointers from main kernel into us
88 afs_vnodeopsp = &Afs_vnodeops;
89 afs_vfsopsp = &Afs_vfsops;
90 afsidestroyp = afsidestroy;
91 afsiptodpp = afsiptodp;
92 afsdptoipp = afsdptoip;
93 idbg_prafsnodep = idbg_prafsnode;
94 idbg_afsvfslistp = idbg_afsvfslist;
95 NewSystemCall (AFS_SYSCALL, Afs_syscall, 6);
96 NewSystemCall (AFS_PIOCTL, afs_pioctl, 4);
97 NewSystemCall (AFS_SETPAG, afs_setpag, 0);
98 NewSystemCall (AFS_IOPEN, iopen, 3);
99 NewSystemCall (AFS_ICREATE, icreate, 6);
100 NewSystemCall (AFS_IINC, iinc, 3);
101 NewSystemCall (AFS_IDEC, idec, 3);
102 #ifdef AFS_SGI_XFS_IOPS_ENV
103 NewSystemCall (AFS_IOPEN64, iopen64, 4);
105 NewSystemCall (AFS_IREAD, iread, 6);
106 NewSystemCall (AFS_IWRITE, iwrite, 6);
109 /* last replace these */
110 setgroupsp = Afs_xsetgroups;
112 idbg_addfunc("afsuser", idbg_afsuser);
117 extern int afs_mount(), afs_unmount(), afs_root(), afs_statfs();
119 extern int afs_sync(OSI_VFS_DECL(afsp), int flags, struct cred *cr);
121 extern int afs_sync(OSI_VFS_DECL(afsp), short flags, struct cred *cr);
123 extern int afs_vget(OSI_VFS_DECL(afsp), vnode_t **vpp, struct fid *afidp);
125 struct vfsops afs_lockedvfsops =
127 struct vfsops Afs_vfsops =
132 BHV_IDENTITY_INIT_POSITION(VFS_POSITION_BASE),
139 fs_nosys, /* rootinit */
140 fs_nosys, /* mntupdate */
148 fs_nosys, /* mountroot */
150 fs_nosys, /* realvfsops */
151 fs_import, /* import */
152 fs_nosys, /* quotactl */
154 fs_nosys, /* swapvp */
157 extern struct afs_q VLRU; /*vcache LRU*/
160 static bhv_desc_t afs_vfs_bhv;
162 afs_mount(struct vfs *afsp, vnode_t *mvp, struct mounta *uap,
168 AFS_STATCNT(afs_mount);
173 if (mvp->v_type != VDIR)
176 if (afs_globalVFS) { /* Don't allow remounts. */
180 afs_globalVFS = afsp;
181 afsp->vfs_bsize = 8192;
182 afsp->vfs_fsid.val[0] = AFS_VFSMAGIC; /* magic */
183 afsp->vfs_fsid.val[1] = afs_fstype;
185 vfs_insertbhv(afsp, &afs_vfs_bhv, &Afs_vfsops, &afs_vfs_bhv);
187 afsp->vfs_data = NULL;
189 afsp->vfs_fstype = afs_fstype;
190 afsp->vfs_dev = 0xbabebabe; /* XXX this should be unique */
192 #ifndef AFS_NONFSTRANS
193 if (nfs_rfsdisptab_v2)
194 afs_xlatorinit_v2(nfs_rfsdisptab_v2);
200 afs_unmount(OSI_VFS_ARG(afsp), flags, cr)
205 extern int afs_afs_cold_shutdown;
207 vnode_t *vp, *rootvp = NULL;
208 register struct afs_q *tq;
211 OSI_VFS_CONVERT(afsp)
213 AFS_STATCNT(afs_unmount);
219 * flush all pages from inactive vnodes - return
220 * EBUSY if any still in use
222 ObtainWriteLock(&afs_xvcache,172);
223 for (tq = VLRU.prev; tq != &VLRU; tq = uq) {
227 if (error = afs_FlushVCache(tvc, &fv_slept))
228 if (vp->v_flag & VROOT) {
232 ReleaseWriteLock(&afs_xvcache);
238 * rootvp gets lots of ref counts
241 tvc = (struct vcache *)rootvp;
242 if (tvc->opens || CheckLock(&tvc->lock) || LockWaiters(&tvc->lock)) {
243 ReleaseWriteLock(&afs_xvcache);
246 ReleaseWriteLock(&afs_xvcache);
249 ObtainWriteLock(&afs_xvcache,173);
250 afs_FlushVCache(tvc, &fv_slept);
252 ReleaseWriteLock(&afs_xvcache);
256 VFS_REMOVEBHV(afsp, &afs_vfs_bhv);
263 afs_root (OSI_VFS_ARG(afsp), avpp)
267 register afs_int32 code = 0;
268 struct vrequest treq;
269 register struct vcache *tvp=0;
270 OSI_VFS_CONVERT(afsp)
272 AFS_STATCNT(afs_root);
273 if (afs_globalVp && (afs_globalVp->states & CStatd)) {
276 if (!(code = afs_InitReq(&treq, OSI_GET_CURRENT_CRED())) &&
277 !(code = afs_CheckInit())) {
278 tvp = afs_GetVCache(&afs_rootFid, &treq, (afs_int32 *)0,
279 (struct vcache*)0, WRITE_LOCK);
280 /* we really want this to stay around */
289 VN_HOLD((struct vnode *)tvp);
290 s = VN_LOCK((struct vnode *)tvp);
291 tvp->v.v_flag |= VROOT;
292 VN_UNLOCK((struct vnode *)tvp, s);
294 afs_globalVFS = afsp;
295 *avpp = (struct vnode *) tvp;
298 afs_Trace2(afs_iclSetp, CM_TRACE_VFSROOT, ICL_TYPE_POINTER, *avpp,
299 ICL_TYPE_INT32, code);
303 afs_statfs(OSI_VFS_ARG(afsp), abp, avp)
306 struct vnode *avp; /* unused */
308 OSI_VFS_CONVERT(afsp)
310 AFS_STATCNT(afs_statfs);
311 abp->f_bsize = afsp->vfs_bsize;
312 abp->f_frsize = afsp->vfs_bsize;
313 /* Fake a high number below to satisfy programs that use the statfs
314 * call to make sure that there's enough space in the device partition
315 * before storing something there.
317 abp->f_blocks = abp->f_bfree = abp->f_bavail = abp->f_files =
318 abp->f_ffree = abp->f_favail = 900000;
320 abp->f_fsid = AFS_VFSMAGIC; /* magic */
321 strcpy(abp->f_basetype, AFS_MOUNT_AFS);
323 abp->f_namemax = 256;
330 * sync's responsibilities include pushing back DELWRI pages
331 * Things to watch out for:
332 * 1) don't want to hold off new vnodes in the file system
333 * while pushing back pages
334 * 2) since we can deal with un-referenced vndoes need to watch
335 * races with folks who recycle vnodes
337 * SYNC_BDFLUSH - do NOT sleep waiting for an inode - also, when
338 * when pushing DELWRI - only push old ones.
339 * SYNC_PDFLUSH - push v_dpages.
340 * SYNC_ATTR - sync attributes - note that ordering considerations
341 * dictate that we also flush dirty pages
342 * SYNC_WAIT - do synchronouse writes - inode & delwri
343 * SYNC_NOWAIT - start delayed writes.
344 * SYNC_DELWRI - look at inodes w/ delwri pages. Other flags
345 * decide how to deal with them.
346 * SYNC_CLOSE - flush delwri and invalidate others.
347 * SYNC_FSDATA - push fs data (e.g. superblocks)
350 extern afs_int32 vcachegen;
351 #define PREEMPT_MASK 0x7f
357 afs_sync(OSI_VFS_DECL(afsp),
365 /* Why enable the vfs sync operation?? */
366 int error, lasterr, preempt;
369 afs_uint32 lvcachegen;
370 register struct afs_q *tq;
373 OSI_VFS_CONVERT(afsp)
377 * if not interested in vnodes, skip all this
380 if ((flags & (SYNC_CLOSE|SYNC_DELWRI|SYNC_PDFLUSH)) == 0)
382 #else /* AFS_SGI61_ENV */
383 if ((flags & (SYNC_CLOSE|SYNC_DELWRI|SYNC_ATTR)) == 0)
385 #endif /* AFS_SGI61_ENV */
387 ObtainReadLock(&afs_xvcache);
388 for (tq = VLRU.prev; tq != &VLRU; tq = uq) {
393 * Since we push all dirty pages on last close/VOP_INACTIVE
394 * we are only concerned with vnodes with
395 * active reference counts.
398 if (vp->v_count == 0) {
402 if ((flags & SYNC_CLOSE) == 0 && !AFS_VN_DIRTY(vp)) {
408 * ignore vnodes which need no flushing
410 if (flags & SYNC_DELWRI) {
411 if (!AFS_VN_DIRTY(vp)) {
417 else if (flags & SYNC_PDFLUSH) {
418 if (!VN_GET_DPAGES(vp)) {
423 #endif /* AFS_SGI61_ENV */
427 lvcachegen = vcachegen;
428 ReleaseReadLock(&afs_xvcache);
431 * Try to lock rwlock without sleeping. If we can't, we must
434 if (afs_rwlock_nowait(vp, 1) == 0) {
436 if (flags & (SYNC_BDFLUSH | SYNC_PDFLUSH))
437 #else /* AFS_SGI61_ENV */
438 if (flags & SYNC_BDFLUSH)
439 #endif /* AFS_SGI61_ENV */
442 ObtainReadLock(&afs_xvcache);
443 if (vcachegen != lvcachegen) {
444 ReleaseReadLock(&afs_xvcache);
449 AFS_RWLOCK(vp, VRWLOCK_WRITE);
453 if (flags & SYNC_CLOSE) {
454 PFLUSHINVALVP(vp, (off_t)0, (off_t)tvc->m.Length);
457 else if (flags & SYNC_PDFLUSH) {
458 if (VN_GET_DPAGES(vp)) {
459 pdflush(vp, B_ASYNC);
462 #endif /* AFS_SGI61_ENV */
465 if ((flags & SYNC_DELWRI) && AFS_VN_DIRTY(vp)) {
467 PFLUSHVP(vp, (off_t)tvc->m.Length,
468 (flags & SYNC_WAIT) ? 0 : B_ASYNC, error);
469 #else /* AFS_SGI61_ENV */
470 if (flags & SYNC_WAIT)
471 /* push all and wait */
472 PFLUSHVP(vp, (off_t)tvc->m.Length,
474 else if (flags & SYNC_BDFLUSH) {
476 error = pdflush(vp, B_ASYNC);
479 /* push all but don't wait */
480 PFLUSHVP(vp, (off_t)tvc->m.Length,
481 (off_t)B_ASYNC, error);
483 #endif /* AFS_SGI61_ENV */
487 * Release vp, check error and whether to preempt, and if
488 * we let go of xvcache lock and someone has changed the
489 * VLRU, restart the loop
492 AFS_RWUNLOCK(vp, VRWLOCK_WRITE);
496 if ((++preempt & PREEMPT_MASK) == 0) {
501 ObtainReadLock(&afs_xvcache);
502 if (vcachegen != lvcachegen) {
503 ReleaseReadLock(&afs_xvcache);
507 ReleaseReadLock(&afs_xvcache);
513 afs_vget(OSI_VFS_DECL(afsp), vnode_t **avcp, struct fid *fidp)
515 struct VenusFid vfid;
516 struct vrequest treq;
517 extern struct cell *afs_GetCellByIndex();
518 register struct cell *tcell;
519 register afs_int32 code = 0;
522 #if defined(AFS_SGI64_ENV) && defined(CKPT)
526 OSI_VFS_CONVERT(afsp)
528 AFS_STATCNT(afs_vget);
532 #if defined(AFS_SGI64_ENV) && defined(CKPT)
533 afid2 = (afs_fid2_t*)fidp;
534 if (afid2->af_len == sizeof(afs_fid2_t) - sizeof(afid2->af_len)) {
535 /* It's a checkpoint restart fid. */
536 tcell = afs_GetCellByIndex(afid2->af_cell, READ_LOCK);
541 vfid.Cell = tcell->cell;
542 afs_PutCell(tcell, WRITE_LOCK);
543 vfid.Fid.Volume = afid2->af_volid;
544 vfid.Fid.Vnode = afid2->af_vno;
545 vfid.Fid.Unique = afid2->af_uniq;
547 if (code = afs_InitReq(&treq, OSI_GET_CURRENT_CRED()))
549 *avcp = (vnode_t*) afs_GetVCache(&vfid, &treq, (afs_int32 *)0,
550 (struct vcache*)0, 0);
558 if (code = afs_InitReq(&treq, OSI_GET_CURRENT_CRED())) goto out;
559 code = afs_osi_vget((struct vcache**)avcp, fidp, &treq);
562 afs_Trace3(afs_iclSetp, CM_TRACE_VGET, ICL_TYPE_POINTER, *avcp,
563 ICL_TYPE_INT32, treq.uid, ICL_TYPE_FID, &vfid);
564 code = afs_CheckCode(code, &treq, 42);
569 #ifdef MP /* locked versions of vfs operations. */
571 /* wrappers for vfs calls */
573 #define AFS_MP_VFS_ARG(A) bhv_desc_t A
575 #define AFS_MP_VFS_ARG(A) struct vfs A
578 int mp_afs_mount(struct vfs *a, struct vnode *b, struct mounta *c,
586 rv = afs_lockedvfsops.vfs_mount(a, b, c, d
595 int mp_afs_unmount(AFS_MP_VFS_ARG(*a), int b, struct cred *c)
599 rv = afs_lockedvfsops.vfs_unmount(a, b, c);
604 int mp_afs_root(AFS_MP_VFS_ARG(*a), struct vnode **b)
608 rv = afs_lockedvfsops.vfs_root(a, b);
613 int mp_afs_statvfs(AFS_MP_VFS_ARG(*a), struct statvfs *b, struct vnode *c)
617 rv = afs_lockedvfsops.vfs_statvfs(a, b, c);
621 int mp_afs_sync(AFS_MP_VFS_ARG(*a),
631 rv = afs_lockedvfsops.vfs_sync(a, b, c);
635 int mp_afs_vget(AFS_MP_VFS_ARG(*a), struct vnode **b, struct fid *c)
639 rv = afs_lockedvfsops.vfs_vget(a, b, c);
644 struct vfsops Afs_vfsops = {
647 BHV_IDENTITY_INIT_POSITION(VFS_POSITION_BASE),
654 fs_nosys, /* rootinit */
655 fs_nosys, /* mntupdate */
663 fs_nosys, /* mountroot */
665 fs_nosys, /* realvfsops */
666 fs_import, /* import */
667 fs_nosys, /* quotactl */
669 fs_nosys, /* swapvp */