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
10 #include <afsconfig.h>
11 #include "afs/param.h"
15 #include "afs/sysincludes.h" /* Standard vendor system headers */
16 #include "afsincludes.h" /* Afs-based standard headers */
17 #include "afs/afs_stats.h" /* afs statistics */
19 #include <sys/adspace.h> /* for vm_att(), vm_det() */
22 static char memZero; /* address of 0 bytes for kmem_alloc */
28 /* osi_Init -- do once per kernel installation initialization.
29 * -- On Solaris this is called from modload initialization.
30 * -- On AIX called from afs_config.
31 * -- On HP called from afsc_link.
32 * -- On SGI called from afs_init. */
35 lock_t afs_event_lock;
45 if (once++ > 0) /* just in case */
47 #if defined(AFS_HPUX_ENV)
49 #else /* AFS_HPUX_ENV */
50 #if defined(AFS_GLOBAL_SUNLOCK)
51 #if defined(AFS_SGI62_ENV)
52 mutex_init(&afs_global_lock, MUTEX_DEFAULT, "afs_global_lock");
53 #elif defined(AFS_OSF_ENV)
54 usimple_lock_init(&afs_global_lock);
55 afs_global_owner = (thread_t)0;
56 #elif defined(AFS_DARWIN_ENV) || defined(AFS_FBSD_ENV)
57 lockinit(&afs_global_lock, PLOCK, "afs global lock", 0, 0);
59 #elif defined(AFS_AIX41_ENV)
60 lock_alloc((void*)&afs_global_lock, LOCK_ALLOC_PIN, 1, 1);
61 simple_lock_init((void *)&afs_global_lock);
63 #ifndef AFS_LINUX22_ENV
64 /* Linux initialization in osi directory. Should move the others. */
65 mutex_init(&afs_global_lock, "afs_global_lock", MUTEX_DEFAULT, NULL);
68 /* afs_rxglobal_lock is initialized in rx_Init. */
70 #endif /* AFS_HPUX_ENV */
72 if ( !afs_osicred_initialized ) {
73 memset((char *)&afs_osi_cred, 0, sizeof(struct AFS_UCRED));
74 crhold(&afs_osi_cred); /* don't let it evaporate */
75 afs_osicred_initialized = 1;
78 osi_flid.fl_pid = osi_flid.fl_sysid = 0;
82 int osi_Active(register struct vcache *avc)
84 AFS_STATCNT(osi_Active);
85 #if defined(AFS_SUN_ENV) || defined(AFS_AIX_ENV) || defined(AFS_OSF_ENV) || defined(AFS_SUN5_ENV) || (AFS_LINUX20_ENV) || defined(AFS_DARWIN_ENV) || defined(AFS_FBSD_ENV)
86 if ((avc->opens > 0) || (avc->states & CMAPPED)) return 1; /* XXX: Warning, verify this XXX */
88 #if defined(AFS_MACH_ENV)
89 if (avc->opens > 0 || ((avc->v.v_flag & VTEXT) && !inode_uncache_try(avc))) return 1;
91 #if defined(AFS_SGI_ENV)
92 if ((avc->opens > 0) || AFS_VN_MAPPED(AFSTOV(avc)))
95 if (avc->opens > 0 || (AFSTOV(avc)->v_flag & VTEXT)) return(1);
97 #endif /* AFS_MACH_ENV */
102 /* this call, unlike osi_FlushText, is supposed to discard caches that may
103 contain invalid information if a file is written remotely, but that may
104 contain valid information that needs to be written back if the file is
105 being written locally. It doesn't subsume osi_FlushText, since the latter
106 function may be needed to flush caches that are invalidated by local writes.
108 avc->pvnLock is already held, avc->lock is guaranteed not to be held (by
111 void osi_FlushPages(register struct vcache *avc, struct AFS_UCRED *credp)
114 ObtainReadLock(&avc->lock);
115 /* If we've already purged this version, or if we're the ones
116 writing this version, don't flush it (could lose the
117 data we're writing). */
118 if ((hcmp((avc->m.DataVersion), (avc->mapDV)) <= 0) ||
119 ((avc->execsOrWriters > 0) && afs_DirtyPages(avc))) {
120 ReleaseReadLock(&avc->lock);
123 ReleaseReadLock(&avc->lock);
124 ObtainWriteLock(&avc->lock,10);
126 if ((hcmp((avc->m.DataVersion), (avc->mapDV)) <= 0) ||
127 ((avc->execsOrWriters > 0) && afs_DirtyPages(avc))) {
128 ReleaseWriteLock(&avc->lock);
131 if (hiszero(avc->mapDV)) {
132 hset(avc->mapDV, avc->m.DataVersion);
133 ReleaseWriteLock(&avc->lock);
137 AFS_STATCNT(osi_FlushPages);
138 hset(origDV, avc->m.DataVersion);
139 afs_Trace3(afs_iclSetp, CM_TRACE_FLUSHPAGES, ICL_TYPE_POINTER, avc,
140 ICL_TYPE_INT32, origDV.low, ICL_TYPE_INT32, avc->m.Length);
142 ReleaseWriteLock(&avc->lock);
144 osi_VM_FlushPages(avc, credp);
146 ObtainWriteLock(&avc->lock,88);
148 /* do this last, and to original version, since stores may occur
149 while executing above PUTPAGE call */
150 hset(avc->mapDV, origDV);
151 ReleaseWriteLock(&avc->lock);
154 afs_lock_t afs_ftf; /* flush text lock */
158 /* This call is supposed to flush all caches that might be invalidated
159 * by either a local write operation or a write operation done on
160 * another client. This call may be called repeatedly on the same
161 * version of a file, even while a file is being written, so it
162 * shouldn't do anything that would discard newly written data before
163 * it is written to the file system. */
165 void osi_FlushText_really(register struct vcache *vp)
167 afs_hyper_t fdv; /* version before which we'll flush */
169 AFS_STATCNT(osi_FlushText);
170 /* see if we've already flushed this data version */
171 if (hcmp(vp->m.DataVersion, vp->flushDV) <= 0) return;
175 void afs_gfs_FlushText();
176 afs_gfs_FlushText(vp);
181 MObtainWriteLock(&afs_ftf,317);
182 hset(fdv, vp->m.DataVersion);
184 /* why this disgusting code below?
185 * xuntext, called by xrele, doesn't notice when it is called
186 * with a freed text object. Sun continually calls xrele or xuntext
187 * without any locking, as long as VTEXT is set on the
188 * corresponding vnode.
189 * But, if the text object is locked when you check the VTEXT
190 * flag, several processes can wait in xuntext, waiting for the
191 * text lock; when the second one finally enters xuntext's
192 * critical region, the text object is already free, but the check
193 * was already done by xuntext's caller.
194 * Even worse, it turns out that xalloc locks the text object
195 * before reading or stating a file via the vnode layer. Thus, we
196 * could end up in getdcache, being asked to bring in a new
197 * version of a file, but the corresponding text object could be
198 * locked. We can't flush the text object without causing
199 * deadlock, so now we just don't try to lock the text object
200 * unless it is guaranteed to work. And we try to flush the text
201 * when we need to a bit more often at the vnode layer. Sun
202 * really blew the vm-cache flushing interface.
205 #if defined (AFS_HPUX_ENV)
206 if (vp->v.v_flag & VTEXT) {
209 if (vp->v.v_flag & VTEXT) { /* still has a text object? */
210 MReleaseWriteLock(&afs_ftf);
216 /* next do the stuff that need not check for deadlock problems */
219 /* finally, record that we've done it */
220 hset(vp->flushDV, fdv);
221 MReleaseWriteLock(&afs_ftf);
223 #endif /* AFS_DEC_ENV */
227 /* I don't really like using xinval() here, because it kills processes
228 * a bit aggressively. Previous incarnations of this functionality
229 * used to use xrele() instead of xinval, and didn't invoke
230 * cacheinval(). But they would panic. So it might be worth looking
231 * into some middle ground...
233 static void afs_gfs_FlushText(register struct vcache *vp)
235 afs_hyper_t fdv; /* version before which we'll flush */
236 register struct text *xp;
239 MObtainWriteLock(&afs_ftf,318);
240 hset(fdv, vp->m.DataVersion);
244 /* this happens frequently after cores are created. */
245 MReleaseWriteLock(&afs_ftf);
249 if (gp->g_flag & GTEXT) {
251 xp = (struct text *) gp->g_textp ;
252 /* if text object is locked, give up */
253 if (xp && (xp->x_flag & XLOCK)) {
254 MReleaseWriteLock(&afs_ftf);
260 if (gp->g_flag & GTEXT) { /* still has a text object? */
265 /* next do the stuff that need not check for deadlock problems */
266 /* maybe xinval(gp); here instead of above */
269 /* finally, record that we've done it */
270 hset(vp->flushDV, fdv);
272 MReleaseWriteLock(&afs_ftf);
274 #endif /* AFS_DEC_ENV */
276 #endif /* AFS_TEXT_ENV */
278 /* mask signals in afsds */
279 void afs_osi_MaskSignals(void)
281 #ifdef AFS_LINUX22_ENV
286 /* unmask signals in rxk listener */
287 void afs_osi_UnmaskRxkSignals(void)
289 #ifdef AFS_LINUX22_ENV
294 /* register rxk listener proc info */
295 void afs_osi_RxkRegister(void)
297 #ifdef AFS_LINUX22_ENV
302 /* procedure for making our processes as invisible as we can */
303 void afs_osi_Invisible(void)
305 #ifdef AFS_LINUX22_ENV
306 afs_osi_MaskSignals();
309 u.u_procp->p_type |= SSYS;
312 curproc->p_flag |= SSYS;
315 set_system_proc(u.u_procp);
317 #if defined(AFS_DARWIN_ENV)
318 /* maybe call init_process instead? */
319 current_proc()->p_flag |= P_SYSTEM;
321 #if defined(AFS_FBSD_ENV)
322 curproc->p_flag |= P_SYSTEM;
324 #if defined(AFS_SGI_ENV)
326 #endif /* AFS_SGI_ENV */
328 AFS_STATCNT(osi_Invisible);
332 #ifndef AFS_LINUX20_ENV /* Linux version in osi_misc.c */
333 /* set the real time */
334 void afs_osi_SetTime(osi_timeval_t *atv)
337 struct timestruc_t t;
339 t.tv_sec = atv->tv_sec;
340 t.tv_nsec = atv->tv_usec * 1000;
341 ksettimer(&t); /* Was -> settimer(TIMEOFDAY, &t); */
348 * To get more than second resolution we can use adjtime. The problem
349 * is that the usecs from the server are wrong (by now) so it isn't
350 * worth complicating the following code.
356 sta.time = atv->tv_sec;
360 #if defined(AFS_SGI_ENV)
366 sta.time = atv->tv_sec;
370 #if defined(AFS_FBSD_ENV)
371 /* does not impliment security features of kern_time.c:settime() */
373 struct timeval tv,delta;
379 timevalsub(&delta, &tv);
380 ts.tv_sec=atv->tv_sec;
381 ts.tv_nsec=atv->tv_usec * 1000;
382 set_timecounter(&ts);
383 (void) splsoftclock();
384 lease_updatetime(delta.tv_sec);
389 #if defined(AFS_DARWIN_ENV)
394 /* stolen from kern_time.c */
396 boottime.tv_sec += atv->tv_sec - time.tv_sec;
402 t.tv_sec = atv->tv_sec;
403 t.tv_usec = atv->tv_usec;
404 s = spl7(); time = t; (void) splx(s);
410 s = splclock(); time = *atv; (void) splx(s);
415 logtchg(atv->tv_sec);
417 #endif /* AFS_DARWIN_ENV */
418 #endif /* AFS_FBSD_ENV */
419 #endif /* AFS_SGI_ENV */
420 #endif /* AFS_SUN55_ENV */
421 #endif /* AFS_SUN5_ENV */
422 #endif /* AFS_AIX32_ENV */
423 AFS_STATCNT(osi_SetTime);
425 #endif /* AFS_LINUX20_ENV */
428 void *afs_osi_Alloc(size_t x)
430 register struct osimem *tm = NULL;
433 AFS_STATCNT(osi_Alloc);
434 /* 0-length allocs may return NULL ptr from AFS_KALLOC, so we special-case
435 things so that NULL returned iff an error occurred */
436 if (x == 0) return &memZero;
438 AFS_STATS(afs_stats_cmperf.OutStandingAllocs++);
439 AFS_STATS(afs_stats_cmperf.OutStandingMemUsage += x);
440 #ifdef AFS_LINUX20_ENV
441 return osi_linux_alloc(x, 1);
445 MALLOC(tm, struct osimem *, size, M_AFSGENERIC, M_WAITOK);
447 tm = (struct osimem *) AFS_KALLOC(size);
451 osi_Panic("osi_Alloc: Couldn't allocate %d bytes; out of memory!\n",
458 #if defined(AFS_SUN_ENV) || defined(AFS_SGI_ENV)
460 void *afs_osi_Alloc_NoSleep(size_t x)
462 register struct osimem *tm;
465 AFS_STATCNT(osi_Alloc);
466 /* 0-length allocs may return NULL ptr from AFS_KALLOC, so we special-case
467 things so that NULL returned iff an error occurred */
468 if (x == 0) return &memZero;
471 AFS_STATS(afs_stats_cmperf.OutStandingAllocs++);
472 AFS_STATS(afs_stats_cmperf.OutStandingMemUsage += x);
474 MALLOC(tm, struct osimem *, size, M_AFSGENERIC, 0);
476 tm = (struct osimem *) AFS_KALLOC_NOSLEEP(size);
481 #endif /* SUN || SGI */
483 void afs_osi_Free(void *x, size_t asize)
485 AFS_STATCNT(osi_Free);
486 if (x == &memZero) return; /* check for putting memZero back */
488 AFS_STATS(afs_stats_cmperf.OutStandingAllocs--);
489 AFS_STATS(afs_stats_cmperf.OutStandingMemUsage -= asize);
490 #if defined(AFS_LINUX20_ENV)
492 #elif defined(AFS_OBSD_ENV)
493 FREE(x, M_AFSGENERIC);
495 AFS_KFREE((struct osimem *)x, asize);
499 void afs_osi_FreeStr(char *x)
501 afs_osi_Free(x, strlen(x) + 1);
504 /* ? is it moderately likely that there are dirty VM pages associated with
507 * Prereqs: avc must be write-locked
509 * System Dependencies: - *must* support each type of system for which
510 * memory mapped files are supported, even if all
511 * it does is return TRUE;
513 * NB: this routine should err on the side of caution for ProcessFS to work
514 * correctly (or at least, not to introduce worse bugs than already exist)
517 int osi_VMDirty_p(struct vcache *avc)
521 if (avc->execsOrWriters <= 0)
522 return 0; /* can't be many dirty pages here, I guess */
524 #if defined (AFS_AIX32_ENV)
526 /* because of the level of hardware involvment with VM and all the
527 * warnings about "This routine must be called at VMM interrupt
528 * level", I thought it would be safest to disable interrupts while
529 * looking at the software page fault table. */
531 /* convert vm handle into index into array: I think that stoinio is
532 * always zero... Look into this XXX */
533 #define VMHASH(handle) ( \
534 ( ((handle) & ~vmker.stoinio) \
535 ^ ((((handle) & ~vmker.stoinio) & vmker.stoimask) << vmker.stoihash) \
539 unsigned int pagef, pri, index, next;
541 index = VMHASH(avc->vmh);
542 if (scb_valid(index)) { /* could almost be an ASSERT */
544 pri = disable_ints();
545 for (pagef = scb_sidlist(index); pagef >= 0; pagef = next) {
546 next = pft_sidfwd(pagef);
547 if (pft_modbit(pagef)) { /* has page frame been modified? */
557 #endif /* AFS_AIX32_ENV */
559 #if defined (AFS_SUN_ENV)
560 if (avc->states & CMAPPED) {
562 for (pg = avc->v.v_s.v_Pages ; pg ; pg = pg->p_vpnext) {
575 * Solaris osi_ReleaseVM should not drop and re-obtain the vcache entry lock.
576 * This leads to bad races when osi_ReleaseVM() is called from
577 * afs_InvalidateAllSegments().
579 * We can do this because Solaris osi_VM_Truncate() doesn't care whether the
580 * vcache entry lock is held or not.
582 * For other platforms, in some cases osi_VM_Truncate() doesn't care, but
583 * there may be cases where it does care. If so, it would be good to fix
584 * them so they don't care. Until then, we assume the worst.
586 * Locking: the vcache entry lock is held. It is dropped and re-obtained.
588 void osi_ReleaseVM(struct vcache *avc, struct AFS_UCRED *acred)
592 osi_VM_Truncate(avc, 0, acred);
595 ReleaseWriteLock(&avc->lock);
597 osi_VM_Truncate(avc, 0, acred);
599 ObtainWriteLock(&avc->lock, 80);
604 void shutdown_osi(void)
606 AFS_STATCNT(shutdown_osi);
607 if (afs_cold_shutdown) {
608 LOCK_INIT(&afs_ftf, "afs_ftf");
613 int afs_osi_suser(void *credp)
615 #if defined(AFS_SUN5_ENV)
616 return afs_suser(credp);
625 /* afs_osi_TraverseProcTable() - Walk through the systems process
626 * table, calling afs_GCPAGs_perproc_func() for each process.
629 #if defined(AFS_SUN5_ENV)
630 void afs_osi_TraverseProcTable(void)
633 for (prp = practive; prp != NULL; prp = prp->p_next) {
634 afs_GCPAGs_perproc_func(prp);
639 #if defined(AFS_HPUX_ENV)
642 * NOTE: h/proc_private.h gives the process table locking rules
643 * It indicates that access to p_cred must be protected by
645 * mp_mtproc_unlock(p);
647 * The code in sys/pm_prot.c uses pcred_lock() to protect access to
648 * the process creds, and uses mp_mtproc_lock() only for audit-related
649 * changes. To be safe, we use both.
652 void afs_osi_TraverseProcTable(void)
657 MP_SPINLOCK(activeproc_lock);
658 MP_SPINLOCK(sched_lock);
662 * Instead of iterating through all of proc[], traverse only
663 * the list of active processes. As an example of this,
664 * see foreach_process() in sys/vm_sched.c.
666 * We hold the locks for the entire scan in order to get a
667 * consistent view of the current set of creds.
670 for(p = proc; endchain == 0; p = &proc[p->p_fandx]) {
671 if (p->p_fandx == 0) {
679 afs_GCPAGs_perproc_func(p);
684 MP_SPINUNLOCK(sched_lock);
685 MP_SPINUNLOCK(activeproc_lock);
689 #if defined(AFS_SGI_ENV)
692 /* TODO: Fix this later. */
693 static int SGI_ProcScanFunc(void *p, void *arg, int mode)
697 #else /* AFS_SGI65_ENV */
698 static int SGI_ProcScanFunc(proc_t *p, void *arg, int mode)
700 afs_int32 (*perproc_func)(struct proc *) = arg;
702 /* we pass in the function pointer for arg,
703 * mode ==0 for startup call, ==1 for each valid proc,
704 * and ==2 for terminate call.
707 code = perproc_func(p);
711 #endif /* AFS_SGI65_ENV */
713 void afs_osi_TraverseProcTable(void)
715 procscan(SGI_ProcScanFunc, afs_GCPAGs_perproc_func);
717 #endif /* AFS_SGI_ENV */
719 #if defined(AFS_AIX_ENV)
721 #define max_proc v.ve_proc
723 void afs_osi_TraverseProcTable(void)
729 * For binary compatibility, on AIX we need to be careful to use the
730 * proper size of a struct proc, even if it is different from what
731 * we were compiled with.
733 if (!afs_gcpags_procsize)
736 #ifndef AFS_AIX51_ENV
737 simple_lock(&proc_tbl_lock);
739 for (p = (struct proc *)v.vb_proc, i = 0;
741 p = (struct proc *)((char *)p + afs_gcpags_procsize), i++) {
744 if (p->p_pvprocp->pv_stat == SNONE)
746 if (p->p_pvprocp->pv_stat == SIDL)
748 if (p->p_pvprocp->pv_stat == SEXIT)
751 if (p->p_stat == SNONE)
753 if (p->p_stat == SIDL)
755 if (p->p_stat == SEXIT)
761 if (PROCMASK(p->p_pid) != i) {
762 afs_gcpags = AFS_GCPAGS_EPIDCHECK;
768 if ((p->p_nice < P_NICE_MIN) || (P_NICE_MAX < p->p_nice)) {
769 afs_gcpags = AFS_GCPAGS_ENICECHECK;
773 afs_GCPAGs_perproc_func(p);
775 #ifndef AFS_AIX51_ENV
776 simple_unlock(&proc_tbl_lock);
781 #if defined(AFS_OSF_ENV)
782 void afs_osi_TraverseProcTable(void)
784 struct pid_entry *pe;
786 #define pidNPID (pidtab + npid)
791 for (pe = pidtab; pe < pidNPID; ++pe) {
792 if (pe->pe_proc != PROC_NULL)
793 afs_GCPAGs_perproc_func(pe->pe_proc);
799 #if defined(AFS_DARWIN_ENV) || defined(AFS_FBSD_ENV)
800 void afs_osi_TraverseProcTable(void)
803 LIST_FOREACH(p, &allproc, p_list) {
804 if (p->p_stat == SIDL)
806 if (p->p_stat == SZOMB)
808 if (p->p_flag & P_SYSTEM)
810 afs_GCPAGs_perproc_func(p);
815 #if defined(AFS_LINUX22_ENV)
816 void afs_osi_TraverseProcTable()
818 struct task_struct *p;
820 #ifdef EXPORTED_TASKLIST_LOCK
821 read_lock(&tasklist_lock);
823 for_each_task(p) if (p->pid) {
824 if (p->state & TASK_ZOMBIE)
826 afs_GCPAGs_perproc_func(p);
828 #ifdef EXPORTED_TASKLIST_LOCK
829 read_unlock(&tasklist_lock);
834 /* return a pointer (sometimes a static copy ) to the cred for a
836 * subsequent calls may overwrite the previously returned value.
839 #if defined(AFS_SGI65_ENV)
840 const struct AFS_UCRED *afs_osi_proc2cred(AFS_PROC *p)
844 #elif defined(AFS_HPUX_ENV)
845 const struct AFS_UCRED *afs_osi_proc2cred(AFS_PROC *p)
851 * Cannot use afs_warnuser() here, as the code path
852 * eventually wants to grab sched_lock, which is
858 #elif defined(AFS_AIX_ENV)
860 /* GLOBAL DECLARATIONS */
863 * LOCKS: the caller must do
864 * simple_lock(&proc_tbl_lock);
865 * simple_unlock(&proc_tbl_lock);
866 * around calls to this function.
869 const struct AFS_UCRED *afs_osi_proc2cred(AFS_PROC *pproc)
871 struct AFS_UCRED *pcred = 0;
874 * pointer to process user structure valid in *our*
877 * The user structure for a process is stored in the user
878 * address space (as distinct from the kernel address
879 * space), and so to refer to the user structure of a
880 * different process we must employ special measures.
882 * I followed the example used in the AIX getproc() system
883 * call in bos/kernel/proc/getproc.c
885 struct user *xmem_userp;
887 struct xmem dp; /* ptr to xmem descriptor */
888 int xm; /* xmem result */
895 * The process private segment in which the user
896 * area is located may disappear. We need to increment
897 * its use count. Therefore we
898 * - get the proc_tbl_lock to hold the segment.
899 * - get the p_lock to lockout vm_cleardata.
900 * - vm_att to load the segment register (no check)
901 * - xmattach to bump its use count.
902 * - release the p_lock.
903 * - release the proc_tbl_lock.
904 * - do whatever we need.
905 * - xmdetach to decrement the use count.
906 * - vm_det to free the segment register (no check)
911 /* simple_lock(&proc_tbl_lock); */
912 if (pproc->p_adspace != NULLSEGVAL) {
915 simple_lock(&pproc->p_pvprocp->pv_lock);
917 simple_lock(&pproc->p_lock);
920 if (pproc->p_threadcount &&
922 pproc->p_pvprocp->pv_threadlist) {
924 pproc->p_threadlist) {
928 * arbitrarily pick the first thread in pproc
930 struct thread *pproc_thread =
932 pproc->p_pvprocp->pv_threadlist;
938 * location of 'struct user' in pproc's
941 struct user *pproc_userp =
942 pproc_thread->t_userp;
945 * create a pointer valid in my own address space
949 (struct user *)vm_att(pproc->p_adspace,
952 dp.aspace_id = XMEM_INVAL;
953 xm = xmattach(xmem_userp,
959 simple_unlock(&pproc->p_pvprocp->pv_lock);
961 simple_unlock(&pproc->p_lock);
964 /* simple_unlock(&proc_tbl_lock); */
965 if (xm == XMEM_SUCC) {
967 static struct AFS_UCRED cred;
970 * What locking should we use to protect access to the user
971 * area? If needed also change the code in AIX/osi_groups.c.
974 /* copy cred to local address space */
975 cred = *xmem_userp->U_cred;
981 vm_det((void *)xmem_userp);
987 #elif defined(AFS_OSF_ENV)
988 const struct AFS_UCRED *afs_osi_proc2cred(AFS_PROC *pr)
990 struct AFS_UCRED *rv=NULL;
996 if((pr->p_stat == SSLEEP) ||
997 (pr->p_stat == SRUN) ||
998 (pr->p_stat == SSTOP))
1003 #elif defined(AFS_DARWIN_ENV) || defined(AFS_FBSD_ENV)
1004 const struct AFS_UCRED *afs_osi_proc2cred(AFS_PROC *pr)
1006 struct AFS_UCRED *rv=NULL;
1007 static struct AFS_UCRED cr;
1013 if((pr->p_stat == SSLEEP) ||
1014 (pr->p_stat == SRUN) ||
1015 (pr->p_stat == SSTOP)) {
1018 cr.cr_uid=pr->p_cred->pc_ucred->cr_uid;
1019 cr.cr_ngroups=pr->p_cred->pc_ucred->cr_ngroups;
1020 memcpy(cr.cr_groups, pr->p_cred->pc_ucred->cr_groups, NGROUPS *
1028 #elif defined(AFS_LINUX22_ENV)
1029 const struct AFS_UCRED *afs_osi_proc2cred(AFS_PROC *pr)
1031 struct AFS_UCRED *rv=NULL;
1032 static struct AFS_UCRED cr;
1038 if ((pr->state == TASK_RUNNING) ||
1039 (pr->state == TASK_INTERRUPTIBLE) ||
1040 (pr->state == TASK_UNINTERRUPTIBLE) ||
1041 (pr->state == TASK_STOPPED)) {
1044 cr.cr_ngroups=pr->ngroups;
1045 memcpy(cr.cr_groups, pr->groups, NGROUPS * sizeof(gid_t));
1052 const struct AFS_UCRED *afs_osi_proc2cred(AFS_PROC *pr)
1054 struct AFS_UCRED *rv=NULL;
1065 #endif /* AFS_GCPAGS */