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"
16 #include "afs/sysincludes.h" /* Standard vendor system headers */
17 #include "afsincludes.h" /* Afs-based standard headers */
18 #include "afs/afs_stats.h" /* afs statistics */
20 #include <sys/adspace.h> /* for vm_att(), vm_det() */
23 static char memZero; /* address of 0 bytes for kmem_alloc */
29 /* osi_Init -- do once per kernel installation initialization.
30 * -- On Solaris this is called from modload initialization.
31 * -- On AIX called from afs_config.
32 * -- On HP called from afsc_link.
33 * -- On SGI called from afs_init. */
36 lock_t afs_event_lock;
43 struct AFS_UCRED *afs_osi_credp;
49 if (once++ > 0) /* just in case */
51 #if defined(AFS_HPUX_ENV)
53 #else /* AFS_HPUX_ENV */
54 #if defined(AFS_GLOBAL_SUNLOCK)
55 #if defined(AFS_SGI62_ENV)
56 mutex_init(&afs_global_lock, MUTEX_DEFAULT, "afs_global_lock");
57 #elif defined(AFS_OSF_ENV)
58 usimple_lock_init(&afs_global_lock);
59 afs_global_owner = (thread_t) 0;
60 #elif defined(AFS_DARWIN_ENV) || defined(AFS_XBSD_ENV)
61 lockinit(&afs_global_lock, PLOCK, "afs global lock", 0, 0);
63 #elif defined(AFS_AIX41_ENV)
64 lock_alloc((void *)&afs_global_lock, LOCK_ALLOC_PIN, 1, 1);
65 simple_lock_init((void *)&afs_global_lock);
66 #elif !defined(AFS_LINUX22_ENV)
67 /* Linux initialization in osi directory. Should move the others. */
68 mutex_init(&afs_global_lock, "afs_global_lock", MUTEX_DEFAULT, NULL);
70 /* afs_rxglobal_lock is initialized in rx_Init. */
71 #endif /* AFS_GLOBAL_SUNLOCK */
72 #endif /* AFS_HPUX_ENV */
74 if (!afs_osicred_initialized) {
76 /* Can't just invent one, must use crget() because of mutex */
77 afs_osi_credp = crdup(osi_curcred());
79 memset(&afs_osi_cred, 0, sizeof(struct AFS_UCRED));
80 crhold(&afs_osi_cred); /* don't let it evaporate */
81 afs_osi_credp = &afs_osi_cred;
83 afs_osicred_initialized = 1;
86 osi_flid.fl_pid = osi_flid.fl_sysid = 0;
89 init_et_to_sys_error();
93 osi_Active(register struct vcache *avc)
95 AFS_STATCNT(osi_Active);
96 #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_XBSD_ENV)
97 if ((avc->opens > 0) || (avc->states & CMAPPED))
98 return 1; /* XXX: Warning, verify this XXX */
99 #elif defined(AFS_MACH_ENV)
101 || ((avc->v.v_flag & VTEXT) && !inode_uncache_try(avc)))
103 #elif defined(AFS_SGI_ENV)
104 if ((avc->opens > 0) || AFS_VN_MAPPED(AFSTOV(avc)))
107 if (avc->opens > 0 || (AFSTOV(avc)->v_flag & VTEXT))
113 /* this call, unlike osi_FlushText, is supposed to discard caches that may
114 contain invalid information if a file is written remotely, but that may
115 contain valid information that needs to be written back if the file is
116 being written locally. It doesn't subsume osi_FlushText, since the latter
117 function may be needed to flush caches that are invalidated by local writes.
119 avc->pvnLock is already held, avc->lock is guaranteed not to be held (by
123 osi_FlushPages(register struct vcache *avc, struct AFS_UCRED *credp)
126 ObtainReadLock(&avc->lock);
127 /* If we've already purged this version, or if we're the ones
128 * writing this version, don't flush it (could lose the
129 * data we're writing). */
130 if ((hcmp((avc->m.DataVersion), (avc->mapDV)) <= 0)
131 || ((avc->execsOrWriters > 0) && afs_DirtyPages(avc))) {
132 ReleaseReadLock(&avc->lock);
135 ReleaseReadLock(&avc->lock);
136 ObtainWriteLock(&avc->lock, 10);
138 if ((hcmp((avc->m.DataVersion), (avc->mapDV)) <= 0)
139 || ((avc->execsOrWriters > 0) && afs_DirtyPages(avc))) {
140 ReleaseWriteLock(&avc->lock);
143 if (hiszero(avc->mapDV)) {
144 hset(avc->mapDV, avc->m.DataVersion);
145 ReleaseWriteLock(&avc->lock);
149 AFS_STATCNT(osi_FlushPages);
150 hset(origDV, avc->m.DataVersion);
151 afs_Trace3(afs_iclSetp, CM_TRACE_FLUSHPAGES, ICL_TYPE_POINTER, avc,
152 ICL_TYPE_INT32, origDV.low, ICL_TYPE_INT32, avc->m.Length);
154 ReleaseWriteLock(&avc->lock);
156 osi_VM_FlushPages(avc, credp);
158 ObtainWriteLock(&avc->lock, 88);
160 /* do this last, and to original version, since stores may occur
161 * while executing above PUTPAGE call */
162 hset(avc->mapDV, origDV);
163 ReleaseWriteLock(&avc->lock);
166 afs_lock_t afs_ftf; /* flush text lock */
170 /* This call is supposed to flush all caches that might be invalidated
171 * by either a local write operation or a write operation done on
172 * another client. This call may be called repeatedly on the same
173 * version of a file, even while a file is being written, so it
174 * shouldn't do anything that would discard newly written data before
175 * it is written to the file system. */
178 osi_FlushText_really(register struct vcache *vp)
180 afs_hyper_t fdv; /* version before which we'll flush */
182 AFS_STATCNT(osi_FlushText);
183 /* see if we've already flushed this data version */
184 if (hcmp(vp->m.DataVersion, vp->flushDV) <= 0)
189 void afs_gfs_FlushText();
190 afs_gfs_FlushText(vp);
195 MObtainWriteLock(&afs_ftf, 317);
196 hset(fdv, vp->m.DataVersion);
198 /* why this disgusting code below?
199 * xuntext, called by xrele, doesn't notice when it is called
200 * with a freed text object. Sun continually calls xrele or xuntext
201 * without any locking, as long as VTEXT is set on the
202 * corresponding vnode.
203 * But, if the text object is locked when you check the VTEXT
204 * flag, several processes can wait in xuntext, waiting for the
205 * text lock; when the second one finally enters xuntext's
206 * critical region, the text object is already free, but the check
207 * was already done by xuntext's caller.
208 * Even worse, it turns out that xalloc locks the text object
209 * before reading or stating a file via the vnode layer. Thus, we
210 * could end up in getdcache, being asked to bring in a new
211 * version of a file, but the corresponding text object could be
212 * locked. We can't flush the text object without causing
213 * deadlock, so now we just don't try to lock the text object
214 * unless it is guaranteed to work. And we try to flush the text
215 * when we need to a bit more often at the vnode layer. Sun
216 * really blew the vm-cache flushing interface.
219 #if defined (AFS_HPUX_ENV)
220 if (vp->v.v_flag & VTEXT) {
223 if (vp->v.v_flag & VTEXT) { /* still has a text object? */
224 MReleaseWriteLock(&afs_ftf);
230 /* next do the stuff that need not check for deadlock problems */
233 /* finally, record that we've done it */
234 hset(vp->flushDV, fdv);
235 MReleaseWriteLock(&afs_ftf);
237 #endif /* AFS_DEC_ENV */
241 /* I don't really like using xinval() here, because it kills processes
242 * a bit aggressively. Previous incarnations of this functionality
243 * used to use xrele() instead of xinval, and didn't invoke
244 * cacheinval(). But they would panic. So it might be worth looking
245 * into some middle ground...
248 afs_gfs_FlushText(register struct vcache *vp)
250 afs_hyper_t fdv; /* version before which we'll flush */
251 register struct text *xp;
254 MObtainWriteLock(&afs_ftf, 318);
255 hset(fdv, vp->m.DataVersion);
259 /* this happens frequently after cores are created. */
260 MReleaseWriteLock(&afs_ftf);
264 if (gp->g_flag & GTEXT) {
266 xp = (struct text *)gp->g_textp;
267 /* if text object is locked, give up */
268 if (xp && (xp->x_flag & XLOCK)) {
269 MReleaseWriteLock(&afs_ftf);
275 if (gp->g_flag & GTEXT) { /* still has a text object? */
280 /* next do the stuff that need not check for deadlock problems */
281 /* maybe xinval(gp); here instead of above */
284 /* finally, record that we've done it */
285 hset(vp->flushDV, fdv);
287 MReleaseWriteLock(&afs_ftf);
289 #endif /* AFS_DEC_ENV */
291 #endif /* AFS_TEXT_ENV */
293 /* mask signals in afsds */
295 afs_osi_MaskSignals(void)
297 #ifdef AFS_LINUX22_ENV
302 /* unmask signals in rxk listener */
304 afs_osi_UnmaskRxkSignals(void)
308 /* register rxk listener proc info */
310 afs_osi_RxkRegister(void)
312 #ifdef AFS_LINUX22_ENV
317 /* procedure for making our processes as invisible as we can */
319 afs_osi_Invisible(void)
321 #ifdef AFS_LINUX22_ENV
322 afs_osi_MaskSignals();
323 #elif defined(AFS_DEC_ENV)
324 u.u_procp->p_type |= SSYS;
325 #elif defined(AFS_SUN5_ENV)
326 curproc->p_flag |= SSYS;
327 #elif defined(AFS_HPUX101_ENV)
328 set_system_proc(u.u_procp);
329 #elif defined(AFS_DARWIN_ENV)
330 /* maybe call init_process instead? */
331 current_proc()->p_flag |= P_SYSTEM;
332 #elif defined(AFS_XBSD_ENV)
333 curproc->p_flag |= P_SYSTEM;
334 #elif defined(AFS_SGI_ENV)
338 AFS_STATCNT(osi_Invisible);
342 #if !defined(AFS_LINUX20_ENV) && !defined(AFS_FBSD_ENV)
343 /* set the real time */
345 afs_osi_SetTime(osi_timeval_t * atv)
347 #if defined(AFS_AIX32_ENV)
348 struct timestruc_t t;
350 t.tv_sec = atv->tv_sec;
351 t.tv_nsec = atv->tv_usec * 1000;
352 ksettimer(&t); /* Was -> settimer(TIMEOFDAY, &t); */
353 #elif defined(AFS_SUN55_ENV)
355 #elif defined(AFS_SUN5_ENV)
357 * To get more than second resolution we can use adjtime. The problem
358 * is that the usecs from the server are wrong (by now) so it isn't
359 * worth complicating the following code.
365 sta.time = atv->tv_sec;
368 #elif defined(AFS_SGI_ENV)
374 sta.time = atv->tv_sec;
377 #elif defined(AFS_DARWIN_ENV)
382 /* stolen from kern_time.c */
384 boottime.tv_sec += atv->tv_sec - time.tv_sec;
388 #if !defined(AFS_HPUX1122_ENV)
389 /* drop the setting of the clock for now. spl7 is not
394 t.tv_sec = atv->tv_sec;
395 t.tv_usec = atv->tv_usec;
412 logtchg(atv->tv_sec);
414 #endif /* AFS_DARWIN_ENV */
415 AFS_STATCNT(osi_SetTime);
417 #endif /* AFS_LINUX20_ENV */
421 afs_osi_Alloc(size_t x)
423 register struct osimem *tm = NULL;
426 AFS_STATCNT(osi_Alloc);
427 /* 0-length allocs may return NULL ptr from AFS_KALLOC, so we special-case
428 * things so that NULL returned iff an error occurred */
432 AFS_STATS(afs_stats_cmperf.OutStandingAllocs++);
433 AFS_STATS(afs_stats_cmperf.OutStandingMemUsage += x);
434 #ifdef AFS_LINUX20_ENV
435 return osi_linux_alloc(x, 1);
438 tm = (struct osimem *)AFS_KALLOC(size);
441 osi_Panic("osi_Alloc: Couldn't allocate %d bytes; out of memory!\n",
448 #if defined(AFS_SUN_ENV) || defined(AFS_SGI_ENV)
451 afs_osi_Alloc_NoSleep(size_t x)
453 register struct osimem *tm;
456 AFS_STATCNT(osi_Alloc);
457 /* 0-length allocs may return NULL ptr from AFS_KALLOC, so we special-case
458 * things so that NULL returned iff an error occurred */
463 AFS_STATS(afs_stats_cmperf.OutStandingAllocs++);
464 AFS_STATS(afs_stats_cmperf.OutStandingMemUsage += x);
465 tm = (struct osimem *)AFS_KALLOC_NOSLEEP(size);
469 #endif /* SUN || SGI */
472 afs_osi_Free(void *x, size_t asize)
474 AFS_STATCNT(osi_Free);
476 return; /* check for putting memZero back */
478 AFS_STATS(afs_stats_cmperf.OutStandingAllocs--);
479 AFS_STATS(afs_stats_cmperf.OutStandingMemUsage -= asize);
480 #if defined(AFS_LINUX20_ENV)
483 AFS_KFREE((struct osimem *)x, asize);
488 afs_osi_FreeStr(char *x)
490 afs_osi_Free(x, strlen(x) + 1);
493 /* ? is it moderately likely that there are dirty VM pages associated with
496 * Prereqs: avc must be write-locked
498 * System Dependencies: - *must* support each type of system for which
499 * memory mapped files are supported, even if all
500 * it does is return TRUE;
502 * NB: this routine should err on the side of caution for ProcessFS to work
503 * correctly (or at least, not to introduce worse bugs than already exist)
507 osi_VMDirty_p(struct vcache *avc)
511 if (avc->execsOrWriters <= 0)
512 return 0; /* can't be many dirty pages here, I guess */
514 #if defined (AFS_AIX32_ENV)
516 /* because of the level of hardware involvment with VM and all the
517 * warnings about "This routine must be called at VMM interrupt
518 * level", I thought it would be safest to disable interrupts while
519 * looking at the software page fault table. */
521 /* convert vm handle into index into array: I think that stoinio is
522 * always zero... Look into this XXX */
523 #define VMHASH(handle) ( \
524 ( ((handle) & ~vmker.stoinio) \
525 ^ ((((handle) & ~vmker.stoinio) & vmker.stoimask) << vmker.stoihash) \
529 unsigned int pagef, pri, index, next;
531 index = VMHASH(avc->segid);
532 if (scb_valid(index)) { /* could almost be an ASSERT */
534 pri = disable_ints();
535 for (pagef = scb_sidlist(index); pagef >= 0; pagef = next) {
536 next = pft_sidfwd(pagef);
537 if (pft_modbit(pagef)) { /* has page frame been modified? */
547 #endif /* AFS_AIX32_ENV */
549 #if defined (AFS_SUN_ENV)
550 if (avc->states & CMAPPED) {
552 for (pg = avc->v.v_s.v_Pages; pg; pg = pg->p_vpnext) {
565 * Solaris osi_ReleaseVM should not drop and re-obtain the vcache entry lock.
566 * This leads to bad races when osi_ReleaseVM() is called from
567 * afs_InvalidateAllSegments().
569 * We can do this because Solaris osi_VM_Truncate() doesn't care whether the
570 * vcache entry lock is held or not.
572 * For other platforms, in some cases osi_VM_Truncate() doesn't care, but
573 * there may be cases where it does care. If so, it would be good to fix
574 * them so they don't care. Until then, we assume the worst.
576 * Locking: the vcache entry lock is held. It is dropped and re-obtained.
579 osi_ReleaseVM(struct vcache *avc, struct AFS_UCRED *acred)
583 osi_VM_Truncate(avc, 0, acred);
586 ReleaseWriteLock(&avc->lock);
588 osi_VM_Truncate(avc, 0, acred);
590 ObtainWriteLock(&avc->lock, 80);
598 AFS_STATCNT(shutdown_osi);
599 if (afs_cold_shutdown) {
600 LOCK_INIT(&afs_ftf, "afs_ftf");
606 afs_osi_suser(void *credp)
608 #if defined(AFS_SUN5_ENV)
609 return afs_suser(credp);
618 /* afs_osi_TraverseProcTable() - Walk through the systems process
619 * table, calling afs_GCPAGs_perproc_func() for each process.
622 #if defined(AFS_SUN5_ENV)
624 afs_osi_TraverseProcTable(void)
627 for (prp = practive; prp != NULL; prp = prp->p_next) {
628 afs_GCPAGs_perproc_func(prp);
633 #if defined(AFS_HPUX_ENV)
636 * NOTE: h/proc_private.h gives the process table locking rules
637 * It indicates that access to p_cred must be protected by
639 * mp_mtproc_unlock(p);
641 * The code in sys/pm_prot.c uses pcred_lock() to protect access to
642 * the process creds, and uses mp_mtproc_lock() only for audit-related
643 * changes. To be safe, we use both.
647 afs_osi_TraverseProcTable(void)
652 MP_SPINLOCK(activeproc_lock);
653 MP_SPINLOCK(sched_lock);
657 * Instead of iterating through all of proc[], traverse only
658 * the list of active processes. As an example of this,
659 * see foreach_process() in sys/vm_sched.c.
661 * We hold the locks for the entire scan in order to get a
662 * consistent view of the current set of creds.
665 for (p = proc; endchain == 0; p = &proc[p->p_fandx]) {
666 if (p->p_fandx == 0) {
674 afs_GCPAGs_perproc_func(p);
679 MP_SPINUNLOCK(sched_lock);
680 MP_SPINUNLOCK(activeproc_lock);
684 #if defined(AFS_SGI_ENV)
687 /* TODO: Fix this later. */
689 SGI_ProcScanFunc(void *p, void *arg, int mode)
693 #else /* AFS_SGI65_ENV */
695 SGI_ProcScanFunc(proc_t * p, void *arg, int mode)
697 afs_int32(*perproc_func) (struct proc *) = arg;
699 /* we pass in the function pointer for arg,
700 * mode ==0 for startup call, ==1 for each valid proc,
701 * and ==2 for terminate call.
704 code = perproc_func(p);
708 #endif /* AFS_SGI65_ENV */
711 afs_osi_TraverseProcTable(void)
713 procscan(SGI_ProcScanFunc, afs_GCPAGs_perproc_func);
715 #endif /* AFS_SGI_ENV */
717 #if defined(AFS_AIX_ENV)
719 #define max_proc v.ve_proc
722 afs_osi_TraverseProcTable(void)
728 * For binary compatibility, on AIX we need to be careful to use the
729 * proper size of a struct proc, even if it is different from what
730 * we were compiled with.
732 if (!afs_gcpags_procsize)
735 #ifndef AFS_AIX51_ENV
736 simple_lock(&proc_tbl_lock);
738 for (p = (struct proc *)v.vb_proc, i = 0; p < max_proc;
739 p = (struct proc *)((char *)p + afs_gcpags_procsize), i++) {
742 if (p->p_pvprocp->pv_stat == SNONE)
744 if (p->p_pvprocp->pv_stat == SIDL)
746 if (p->p_pvprocp->pv_stat == SEXIT)
749 if (p->p_stat == SNONE)
751 if (p->p_stat == SIDL)
753 if (p->p_stat == SEXIT)
759 if (PROCMASK(p->p_pid) != i) {
760 afs_gcpags = AFS_GCPAGS_EPIDCHECK;
766 if ((p->p_nice < P_NICE_MIN) || (P_NICE_MAX < p->p_nice)) {
767 afs_gcpags = AFS_GCPAGS_ENICECHECK;
771 afs_GCPAGs_perproc_func(p);
773 #ifndef AFS_AIX51_ENV
774 simple_unlock(&proc_tbl_lock);
779 #if defined(AFS_OSF_ENV)
781 afs_osi_TraverseProcTable(void)
783 struct pid_entry *pe;
785 #define pidNPID (pidtab + npid)
790 for (pe = pidtab; pe < pidNPID; ++pe) {
791 if (pe->pe_proc != PROC_NULL)
792 afs_GCPAGs_perproc_func(pe->pe_proc);
798 #if defined(AFS_DARWIN_ENV) || defined(AFS_FBSD_ENV)
800 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)
817 afs_osi_TraverseProcTable()
819 struct task_struct *p;
821 #ifdef EXPORTED_TASKLIST_LOCK
822 read_lock(&tasklist_lock);
824 #ifdef DEFINED_FOR_EACH_PROCESS
825 for_each_process(p) if (p->pid) {
826 if (p->state & TASK_ZOMBIE)
828 afs_GCPAGs_perproc_func(p);
831 for_each_task(p) if (p->pid) {
832 if (p->state & TASK_ZOMBIE)
834 afs_GCPAGs_perproc_func(p);
837 #ifdef EXPORTED_TASKLIST_LOCK
838 read_unlock(&tasklist_lock);
843 /* return a pointer (sometimes a static copy ) to the cred for a
845 * subsequent calls may overwrite the previously returned value.
848 #if defined(AFS_SGI65_ENV)
849 const struct AFS_UCRED *
850 afs_osi_proc2cred(AFS_PROC * p)
854 #elif defined(AFS_HPUX_ENV)
855 const struct AFS_UCRED *
856 afs_osi_proc2cred(AFS_PROC * p)
862 * Cannot use afs_warnuser() here, as the code path
863 * eventually wants to grab sched_lock, which is
869 #elif defined(AFS_AIX_ENV)
871 /* GLOBAL DECLARATIONS */
874 * LOCKS: the caller must do
875 * simple_lock(&proc_tbl_lock);
876 * simple_unlock(&proc_tbl_lock);
877 * around calls to this function.
880 const struct AFS_UCRED *
881 afs_osi_proc2cred(AFS_PROC * pproc)
883 struct AFS_UCRED *pcred = 0;
886 * pointer to process user structure valid in *our*
889 * The user structure for a process is stored in the user
890 * address space (as distinct from the kernel address
891 * space), and so to refer to the user structure of a
892 * different process we must employ special measures.
894 * I followed the example used in the AIX getproc() system
895 * call in bos/kernel/proc/getproc.c
897 struct user *xmem_userp;
899 struct xmem dp; /* ptr to xmem descriptor */
900 int xm; /* xmem result */
907 * The process private segment in which the user
908 * area is located may disappear. We need to increment
909 * its use count. Therefore we
910 * - get the proc_tbl_lock to hold the segment.
911 * - get the p_lock to lockout vm_cleardata.
912 * - vm_att to load the segment register (no check)
913 * - xmattach to bump its use count.
914 * - release the p_lock.
915 * - release the proc_tbl_lock.
916 * - do whatever we need.
917 * - xmdetach to decrement the use count.
918 * - vm_det to free the segment register (no check)
923 /* simple_lock(&proc_tbl_lock); */
925 if (pproc->p_adspace != vm_handle(NULLSEGID, (int32long64_t) 0)) {
927 if (pproc->p_adspace != NULLSEGVAL) {
931 simple_lock(&pproc->p_pvprocp->pv_lock);
933 simple_lock(&pproc->p_lock);
936 if (pproc->p_threadcount &&
938 pproc->p_pvprocp->pv_threadlist) {
940 pproc->p_threadlist) {
944 * arbitrarily pick the first thread in pproc
946 struct thread *pproc_thread =
948 pproc->p_pvprocp->pv_threadlist;
954 * location of 'struct user' in pproc's
957 struct user *pproc_userp = pproc_thread->t_userp;
960 * create a pointer valid in my own address space
963 xmem_userp = (struct user *)vm_att(pproc->p_adspace, pproc_userp);
965 dp.aspace_id = XMEM_INVAL;
966 xm = xmattach(xmem_userp, sizeof(*xmem_userp), &dp, SYS_ADSPACE);
970 simple_unlock(&pproc->p_pvprocp->pv_lock);
972 simple_unlock(&pproc->p_lock);
975 /* simple_unlock(&proc_tbl_lock); */
976 if (xm == XMEM_SUCC) {
978 static struct AFS_UCRED cred;
981 * What locking should we use to protect access to the user
982 * area? If needed also change the code in AIX/osi_groups.c.
985 /* copy cred to local address space */
986 cred = *xmem_userp->U_cred;
992 vm_det((void *)xmem_userp);
998 #elif defined(AFS_OSF_ENV)
999 const struct AFS_UCRED *
1000 afs_osi_proc2cred(AFS_PROC * pr)
1002 struct AFS_UCRED *rv = NULL;
1008 if ((pr->p_stat == SSLEEP) || (pr->p_stat == SRUN)
1009 || (pr->p_stat == SSTOP))
1014 #elif defined(AFS_DARWIN_ENV) || defined(AFS_FBSD_ENV)
1015 const struct AFS_UCRED *
1016 afs_osi_proc2cred(AFS_PROC * pr)
1018 struct AFS_UCRED *rv = NULL;
1019 static struct AFS_UCRED cr;
1025 if ((pr->p_stat == SSLEEP) || (pr->p_stat == SRUN)
1026 || (pr->p_stat == SSTOP)) {
1029 cr.cr_uid = pr->p_cred->pc_ucred->cr_uid;
1030 cr.cr_ngroups = pr->p_cred->pc_ucred->cr_ngroups;
1031 memcpy(cr.cr_groups, pr->p_cred->pc_ucred->cr_groups,
1032 NGROUPS * sizeof(gid_t));
1039 #elif defined(AFS_LINUX22_ENV)
1040 const struct AFS_UCRED *
1041 afs_osi_proc2cred(AFS_PROC * pr)
1043 struct AFS_UCRED *rv = NULL;
1044 static struct AFS_UCRED cr;
1050 if ((pr->state == TASK_RUNNING) || (pr->state == TASK_INTERRUPTIBLE)
1051 || (pr->state == TASK_UNINTERRUPTIBLE)
1052 || (pr->state == TASK_STOPPED)) {
1054 cr.cr_uid = pr->uid;
1055 cr.cr_ngroups = pr->ngroups;
1056 memcpy(cr.cr_groups, pr->groups, NGROUPS * sizeof(gid_t));
1063 const struct AFS_UCRED *
1064 afs_osi_proc2cred(AFS_PROC * pr)
1066 struct AFS_UCRED *rv = NULL;
1077 #endif /* AFS_GCPAGS */