/*
 * Copyright 2000, International Business Machines Corporation and others.
 * All Rights Reserved.
 * 
 * This software has been released under the terms of the IBM Public
 * License.  For details, see the LICENSE file in the top-level source
 * directory or online at http://www.openafs.org/dl/license10.html
 */

#include <afsconfig.h>
#include "afs/param.h"

RCSID
    ("$Header: /cvs/openafs/src/afs/afs_call.c,v 1.74.2.23 2007/10/10 16:57:54 shadow Exp $");

#include "afs/sysincludes.h"	/* Standard vendor system headers */
#include "afsincludes.h"	/* Afs-based standard headers */
#include "afs/afs_stats.h"
#include "rx/rx_globals.h"
#if !defined(UKERNEL) && !defined(AFS_LINUX20_ENV)
#include "net/if.h"
#ifdef AFS_SGI62_ENV
#include "h/hashing.h"
#endif
#if !defined(AFS_HPUX110_ENV) && !defined(AFS_DARWIN60_ENV)
#include "netinet/in_var.h"
#endif
#endif /* !defined(UKERNEL) */
#ifdef AFS_LINUX22_ENV
#include "h/smp_lock.h"
#endif
#ifdef AFS_SUN510_ENV
#include "h/ksynch.h"
#include "h/sunddi.h"
#endif

#if defined(AFS_SUN5_ENV) || defined(AFS_AIX_ENV) || defined(AFS_SGI_ENV) || defined(AFS_HPUX_ENV)
#define	AFS_MINBUFFERS	100
#else
#define	AFS_MINBUFFERS	50
#endif

struct afsop_cell {
    afs_int32 hosts[MAXCELLHOSTS];
    char cellName[100];
};

char afs_zeros[AFS_ZEROS];
char afs_rootVolumeName[64] = "";
struct afs_icl_set *afs_iclSetp = (struct afs_icl_set *)0;
struct afs_icl_set *afs_iclLongTermSetp = (struct afs_icl_set *)0;
afs_uint32 rx_bindhost;

#if defined(AFS_SUN5_ENV) || defined(AFS_SGI_ENV)
kmutex_t afs_global_lock;
#endif

#if defined(AFS_SGI_ENV) && !defined(AFS_SGI64_ENV)
long afs_global_owner;
#endif

#if defined(AFS_OSF_ENV)
simple_lock_data_t afs_global_lock;
#endif

#if defined(AFS_DARWIN_ENV) 
#ifdef AFS_DARWIN80_ENV
lck_mtx_t  *afs_global_lock;
#else
struct lock__bsd__ afs_global_lock;
#endif
#endif

#if defined(AFS_XBSD_ENV) && !defined(AFS_FBSD50_ENV)
struct lock afs_global_lock;
struct proc *afs_global_owner;
#endif
#ifdef AFS_FBSD50_ENV
struct mtx afs_global_mtx;
#endif

#if defined(AFS_OSF_ENV) || defined(AFS_DARWIN_ENV)
thread_t afs_global_owner;
#endif /* AFS_OSF_ENV */

#if defined(AFS_AIX41_ENV)
simple_lock_data afs_global_lock;
#endif

#ifdef AFS_SUN510_ENV
ddi_taskq_t *afs_taskq;
krwlock_t afsifinfo_lock;
#endif

afs_int32 afs_initState = 0;
afs_int32 afs_termState = 0;
afs_int32 afs_setTime = 0;
int afs_cold_shutdown = 0;
char afs_SynchronousCloses = '\0';
static int afs_CB_Running = 0;
static int AFS_Running = 0;
static int afs_CacheInit_Done = 0;
static int afs_Go_Done = 0;
extern struct interfaceAddr afs_cb_interface;
static int afs_RX_Running = 0;
static int afs_InitSetup_done = 0;
afs_int32 afs_numcachefiles = -1;
afs_int32 afs_numfilesperdir = -1;
char afs_cachebasedir[1024];

afs_int32 afs_rx_deadtime = AFS_RXDEADTIME;
afs_int32 afs_rx_harddead = AFS_HARDDEADTIME;

static int
  Afscall_icl(long opcode, long p1, long p2, long p3, long p4, long *retval);

static int afscall_set_rxpck_received = 0;

#if defined(AFS_HPUX_ENV)
extern int afs_vfs_mount();
#endif /* defined(AFS_HPUX_ENV) */

/* This is code which needs to be called once when the first daemon enters
 * the client. A non-zero return means an error and AFS should not start.
 */
static int
afs_InitSetup(int preallocs)
{
    extern void afs_InitStats();
    int code;

    if (afs_InitSetup_done)
	return EAGAIN;

#ifdef AFS_SUN510_ENV
    /* Initialize a RW lock for the ifinfo global array */
    rw_init(&afsifinfo_lock, NULL, RW_DRIVER, NULL);

    /* Create a taskq */
    afs_taskq = ddi_taskq_create(NULL, "afs_taskq", 2, TASKQ_DEFAULTPRI, 0);

    osi_StartNetIfPoller();
#endif

#ifndef AFS_NOSTATS
    /*
     * Set up all the AFS statistics variables.  This should be done
     * exactly once, and it should be done here, the first resource-setting
     * routine to be called by the CM/RX.
     */
    afs_InitStats();
#endif /* AFS_NOSTATS */

    memset(afs_zeros, 0, AFS_ZEROS);

    /* start RX */
    if(!afscall_set_rxpck_received)
    rx_extraPackets = AFS_NRXPACKETS;	/* smaller # of packets */
    code = rx_InitHost(rx_bindhost, htons(7001));
    if (code) {
	printf("AFS: RX failed to initialize %d).\n", code);
	return code;
    }
    rx_SetRxDeadTime(afs_rx_deadtime);
    /* resource init creates the services */
    afs_ResourceInit(preallocs);

    afs_InitSetup_done = 1;
    afs_osi_Wakeup(&afs_InitSetup_done);

    return code;
}
#if defined(AFS_DARWIN80_ENV)
struct afsd_thread_info {
    unsigned long parm;
};
static int
afsd_thread(int *rock)
{
    struct afsd_thread_info *arg = (struct afsd_thread_info *)rock;
    unsigned long parm = arg->parm;

    switch (parm) {
    case AFSOP_START_RXCALLBACK:
	AFS_GLOCK();
	wakeup(arg);
	afs_CB_Running = 1;
	while (afs_RX_Running != 2)
	    afs_osi_Sleep(&afs_RX_Running);
	afs_RXCallBackServer();
	AFS_GUNLOCK();
	thread_terminate(current_thread());
	break;
    case AFSOP_START_AFS:
	AFS_GLOCK();
	wakeup(arg);
	AFS_Running = 1;
	while (afs_initState < AFSOP_START_AFS)
	    afs_osi_Sleep(&afs_initState);
	afs_initState = AFSOP_START_BKG;
	afs_osi_Wakeup(&afs_initState);
	afs_Daemon();
	AFS_GUNLOCK();
	thread_terminate(current_thread());
	break;
    case AFSOP_START_BKG:
	AFS_GLOCK();
	wakeup(arg);
	while (afs_initState < AFSOP_START_BKG)
	    afs_osi_Sleep(&afs_initState);
	if (afs_initState < AFSOP_GO) {
	    afs_initState = AFSOP_GO;
	    afs_osi_Wakeup(&afs_initState);
	}
	afs_BackgroundDaemon();
	AFS_GUNLOCK();
	thread_terminate(current_thread());
	break;
    case AFSOP_START_TRUNCDAEMON:
	AFS_GLOCK();
	wakeup(arg);
	while (afs_initState < AFSOP_GO)
	    afs_osi_Sleep(&afs_initState);
	afs_CacheTruncateDaemon();
	AFS_GUNLOCK();
	thread_terminate(current_thread());
	break;
    case AFSOP_START_CS:
	AFS_GLOCK();
	wakeup(arg);
	afs_CheckServerDaemon();
	AFS_GUNLOCK();
	thread_terminate(current_thread());
	break;
    case AFSOP_RXEVENT_DAEMON:
	AFS_GLOCK();
	wakeup(arg);
	while (afs_initState < AFSOP_START_BKG)
	    afs_osi_Sleep(&afs_initState);
	afs_rxevent_daemon();
	AFS_GUNLOCK();
	thread_terminate(current_thread());
	break;
    case AFSOP_RXLISTENER_DAEMON:
	AFS_GLOCK();
	wakeup(arg);
	afs_initState = AFSOP_START_AFS;
	afs_osi_Wakeup(&afs_initState);
	afs_RX_Running = 2;
	afs_osi_Wakeup(&afs_RX_Running);
	afs_osi_RxkRegister();
	rxk_Listener();
	AFS_GUNLOCK();
	thread_terminate(current_thread());
	break;
    default:
	printf("Unknown op %ld in StartDaemon()\n", (long)parm);
	break;
    }
}

void
afs_DaemonOp(long parm, long parm2, long parm3, long parm4, long parm5,
	     long parm6)
{
    int code;
    struct afsd_thread_info info;
    thread_t thread;

    if (parm == AFSOP_START_RXCALLBACK) {
	if (afs_CB_Running)
	    return;
    } else if (parm == AFSOP_RXLISTENER_DAEMON) {
	if (afs_RX_Running)
	    return;
	afs_RX_Running = 1;
	code = afs_InitSetup(parm2);
	if (parm3) {
	    rx_enablePeerRPCStats();
	}
	if (parm4) {
	    rx_enableProcessRPCStats();
	}
	if (code)
	    return;
    } else if (parm == AFSOP_START_AFS) {
	if (AFS_Running)
	    return;
    }				/* other functions don't need setup in the parent */
    info.parm = parm;
    kernel_thread_start((thread_continue_t)afsd_thread, &info, &thread);
    AFS_GUNLOCK();
    /* we need to wait cause we passed stack pointers around.... */
    msleep(&info, NULL, PVFS, "afs_DaemonOp", NULL);
    AFS_GLOCK();
    thread_deallocate(thread);
}
#endif


#if defined(AFS_LINUX24_ENV) && defined(COMPLETION_H_EXISTS)
struct afsd_thread_info {
#if defined(AFS_LINUX26_ENV) && !defined(INIT_WORK_HAS_DATA)
    struct work_struct tq;
#endif
    unsigned long parm;
    struct completion *complete;
};

static int
afsd_thread(void *rock)
{
    struct afsd_thread_info *arg = rock;
    unsigned long parm = arg->parm;
#ifdef SYS_SETPRIORITY_EXPORTED
    int (*sys_setpriority) (int, int, int) = sys_call_table[__NR_setpriority];
#endif
#if defined(AFS_LINUX26_ENV)
    daemonize("afsd");
#else
    daemonize();
#endif
				/* doesn't do much, since we were forked from keventd, but
				 * does call mm_release, which wakes up our parent (since it
				 * used CLONE_VFORK) */
#if !defined(AFS_LINUX26_ENV)
    reparent_to_init();
#endif
    afs_osi_MaskSignals();
    switch (parm) {
    case AFSOP_START_RXCALLBACK:
	sprintf(current->comm, "afs_cbstart");
	AFS_GLOCK();
	complete(arg->complete);
	afs_CB_Running = 1;
	while (afs_RX_Running != 2)
	    afs_osi_Sleep(&afs_RX_Running);
	sprintf(current->comm, "afs_callback");
	afs_RXCallBackServer();
	AFS_GUNLOCK();
	complete_and_exit(0, 0);
	break;
    case AFSOP_START_AFS:
	sprintf(current->comm, "afs_afsstart");
	AFS_GLOCK();
	complete(arg->complete);
	AFS_Running = 1;
	while (afs_initState < AFSOP_START_AFS)
	    afs_osi_Sleep(&afs_initState);
	afs_initState = AFSOP_START_BKG;
	afs_osi_Wakeup(&afs_initState);
	sprintf(current->comm, "afsd");
	afs_Daemon();
	AFS_GUNLOCK();
	complete_and_exit(0, 0);
	break;
    case AFSOP_START_BKG:
	sprintf(current->comm, "afs_bkgstart");
	AFS_GLOCK();
	complete(arg->complete);
	while (afs_initState < AFSOP_START_BKG)
	    afs_osi_Sleep(&afs_initState);
	if (afs_initState < AFSOP_GO) {
	    afs_initState = AFSOP_GO;
	    afs_osi_Wakeup(&afs_initState);
	}
	sprintf(current->comm, "afs_background");
	afs_BackgroundDaemon();
	AFS_GUNLOCK();
	complete_and_exit(0, 0);
	break;
    case AFSOP_START_TRUNCDAEMON:
	sprintf(current->comm, "afs_trimstart");
	AFS_GLOCK();
	complete(arg->complete);
	while (afs_initState < AFSOP_GO)
	    afs_osi_Sleep(&afs_initState);
	sprintf(current->comm, "afs_cachetrim");
	afs_CacheTruncateDaemon();
	AFS_GUNLOCK();
	complete_and_exit(0, 0);
	break;
    case AFSOP_START_CS:
	sprintf(current->comm, "afs_checkserver");
	AFS_GLOCK();
	complete(arg->complete);
	afs_CheckServerDaemon();
	AFS_GUNLOCK();
	complete_and_exit(0, 0);
	break;
    case AFSOP_RXEVENT_DAEMON:
	sprintf(current->comm, "afs_evtstart");
#ifdef SYS_SETPRIORITY_EXPORTED
	sys_setpriority(PRIO_PROCESS, 0, -10);
#else
#ifdef CURRENT_INCLUDES_NICE
	current->nice = -10;
#endif
#endif
	AFS_GLOCK();
	complete(arg->complete);
	while (afs_initState < AFSOP_START_BKG)
	    afs_osi_Sleep(&afs_initState);
	sprintf(current->comm, "afs_rxevent");
	afs_rxevent_daemon();
	AFS_GUNLOCK();
	complete_and_exit(0, 0);
	break;
    case AFSOP_RXLISTENER_DAEMON:
	sprintf(current->comm, "afs_lsnstart");
#ifdef SYS_SETPRIORITY_EXPORTED
	sys_setpriority(PRIO_PROCESS, 0, -10);
#else
#ifdef CURRENT_INCLUDES_NICE
	current->nice = -10;
#endif
#endif
	AFS_GLOCK();
	complete(arg->complete);
	afs_initState = AFSOP_START_AFS;
	afs_osi_Wakeup(&afs_initState);
	afs_RX_Running = 2;
	afs_osi_Wakeup(&afs_RX_Running);
	afs_osi_RxkRegister();
	sprintf(current->comm, "afs_rxlistener");
	rxk_Listener();
	AFS_GUNLOCK();
	complete_and_exit(0, 0);
	break;
    default:
	printf("Unknown op %ld in StartDaemon()\n", (long)parm);
	break;
    }
    return 0;
}

void
#if defined(AFS_LINUX26_ENV) && !defined(INIT_WORK_HAS_DATA)
afsd_launcher(struct work_struct *work)
#else
afsd_launcher(void *rock)
#endif
{
#if defined(AFS_LINUX26_ENV) && !defined(INIT_WORK_HAS_DATA)
    struct afsd_thread_info *rock = container_of(work, struct afsd_thread_info, tq);
#endif

    if (!kernel_thread(afsd_thread, (void *)rock, CLONE_VFORK | SIGCHLD))
	printf("kernel_thread failed. afs startup will not complete\n");
}

void
afs_DaemonOp(long parm, long parm2, long parm3, long parm4, long parm5,
	     long parm6)
{
    int code;
    DECLARE_COMPLETION(c);
#if defined(AFS_LINUX26_ENV)
    struct work_struct tq;
#else
    struct tq_struct tq;
#endif
    struct afsd_thread_info info;
    if (parm == AFSOP_START_RXCALLBACK) {
	if (afs_CB_Running)
	    return;
    } else if (parm == AFSOP_RXLISTENER_DAEMON) {
	if (afs_RX_Running)
	    return;
	afs_RX_Running = 1;
	code = afs_InitSetup(parm2);
	if (parm3) {
	    rx_enablePeerRPCStats();
	}
	if (parm4) {
	    rx_enableProcessRPCStats();
	}
	if (code)
	    return;
    } else if (parm == AFSOP_START_AFS) {
	if (AFS_Running)
	    return;
    }				/* other functions don't need setup in the parent */
    info.complete = &c;
    info.parm = parm;
#if defined(AFS_LINUX26_ENV)
#if !defined(INIT_WORK_HAS_DATA)
    INIT_WORK(&info.tq, afsd_launcher);
    schedule_work(&info.tq);
#else
    INIT_WORK(&tq, afsd_launcher, &info);
    schedule_work(&tq);
#endif
#else
    tq.sync = 0;
    INIT_LIST_HEAD(&tq.list);
    tq.routine = afsd_launcher;
    tq.data = &info;
    schedule_task(&tq);
#endif
    AFS_GUNLOCK();
    /* we need to wait cause we passed stack pointers around.... */
    wait_for_completion(&c);
    AFS_GLOCK();
}
#endif

static void
wait_for_cachedefs(void) {
#ifdef AFS_CACHE_VNODE_PATH
    while ((afs_numcachefiles < 1) || (afs_numfilesperdir < 1) ||
	   (afs_cachebasedir[0] != '/')) {
	printf("afs: waiting for cache parameter definitions\n");
	afs_osi_Sleep(&afs_initState);
    }
#endif
}

/* leaving as is, probably will barf if we add prototypes here since it's likely being called
with partial list */
int
afs_syscall_call(parm, parm2, parm3, parm4, parm5, parm6)
     long parm, parm2, parm3, parm4, parm5, parm6;
{
    afs_int32 code = 0;
#if defined(AFS_SGI61_ENV) || defined(AFS_SUN57_ENV) || defined(AFS_DARWIN_ENV) || defined(AFS_XBSD_ENV)
    size_t bufferSize;
#else /* AFS_SGI61_ENV */
    u_int bufferSize;
#endif /* AFS_SGI61_ENV */

    AFS_STATCNT(afs_syscall_call);
    if (
#ifdef	AFS_SUN5_ENV
	!afs_suser(CRED())
#else
	!afs_suser(NULL)
#endif
		    && (parm != AFSOP_GETMTU) && (parm != AFSOP_GETMASK)) {
	/* only root can run this code */
#if defined(AFS_OSF_ENV) || defined(AFS_SUN5_ENV) || defined(KERNEL_HAVE_UERROR)
#if defined(KERNEL_HAVE_UERROR)
        setuerror(EACCES);
#endif
	code = EACCES;
#else
	code = EPERM;
#endif
	AFS_GLOCK();
#ifdef AFS_DARWIN80_ENV
	put_vfs_context();
#endif
	goto out;
    }
    AFS_GLOCK();
#ifdef AFS_DARWIN80_ENV
    put_vfs_context();
#endif
#if ((defined(AFS_LINUX24_ENV) && defined(COMPLETION_H_EXISTS)) || defined(AFS_DARWIN80_ENV)) && !defined(UKERNEL)
    if (parm < AFSOP_ADDCELL || parm == AFSOP_RXEVENT_DAEMON
	|| parm == AFSOP_RXLISTENER_DAEMON) {
	afs_DaemonOp(parm, parm2, parm3, parm4, parm5, parm6);
    }
#else /* !(AFS_LINUX24_ENV && !UKERNEL) */
    if (parm == AFSOP_START_RXCALLBACK) {
	if (afs_CB_Running)
	    goto out;
	afs_CB_Running = 1;
#ifndef RXK_LISTENER_ENV
	code = afs_InitSetup(parm2);
	if (!code)
#endif /* !RXK_LISTENER_ENV */
	{
#ifdef RXK_LISTENER_ENV
	    while (afs_RX_Running != 2)
		afs_osi_Sleep(&afs_RX_Running);
#else /* !RXK_LISTENER_ENV */
	    afs_initState = AFSOP_START_AFS;
	    afs_osi_Wakeup(&afs_initState);
#endif /* RXK_LISTENER_ENV */
	    afs_osi_Invisible();
	    afs_RXCallBackServer();
	}
#ifdef AFS_SGI_ENV
	AFS_GUNLOCK();
	exit(CLD_EXITED, code);
#endif /* AFS_SGI_ENV */
    }
#ifdef RXK_LISTENER_ENV
    else if (parm == AFSOP_RXLISTENER_DAEMON) {
	if (afs_RX_Running)
	    goto out;
	afs_RX_Running = 1;
	code = afs_InitSetup(parm2);
	if (parm3) {
	    rx_enablePeerRPCStats();
	}
	if (parm4) {
	    rx_enableProcessRPCStats();
	}
	if (!code) {
	    afs_initState = AFSOP_START_AFS;
	    afs_osi_Wakeup(&afs_initState);
	    afs_osi_Invisible();
	    afs_RX_Running = 2;
	    afs_osi_Wakeup(&afs_RX_Running);
#ifndef UKERNEL
	    afs_osi_RxkRegister();
#endif /* !UKERNEL */
	    rxk_Listener();
	}
#ifdef	AFS_SGI_ENV
	AFS_GUNLOCK();
	exit(CLD_EXITED, code);
#endif /* AFS_SGI_ENV */
    }
#endif /* RXK_LISTENER_ENV */
    else if (parm == AFSOP_START_AFS) {
	/* afs daemon */
	if (AFS_Running)
	    goto out;
	AFS_Running = 1;
	while (afs_initState < AFSOP_START_AFS)
	    afs_osi_Sleep(&afs_initState);

	afs_initState = AFSOP_START_BKG;
	afs_osi_Wakeup(&afs_initState);
	afs_osi_Invisible();
	afs_Daemon();
#ifdef AFS_SGI_ENV
	AFS_GUNLOCK();
	exit(CLD_EXITED, 0);
#endif /* AFS_SGI_ENV */
    } else if (parm == AFSOP_START_CS) {
	afs_osi_Invisible();
	afs_CheckServerDaemon();
#ifdef AFS_SGI_ENV
	AFS_GUNLOCK();
	exit(CLD_EXITED, 0);
#endif /* AFS_SGI_ENV */
    } else if (parm == AFSOP_START_BKG) {
	while (afs_initState < AFSOP_START_BKG)
	    afs_osi_Sleep(&afs_initState);
	if (afs_initState < AFSOP_GO) {
	    afs_initState = AFSOP_GO;
	    afs_osi_Wakeup(&afs_initState);
	}
	/* start the bkg daemon */
	afs_osi_Invisible();
#ifdef AFS_AIX32_ENV
	if (parm2)
	    afs_BioDaemon(parm2);
	else
#endif /* AFS_AIX32_ENV */
	    afs_BackgroundDaemon();
#ifdef AFS_SGI_ENV
	AFS_GUNLOCK();
	exit(CLD_EXITED, 0);
#endif /* AFS_SGI_ENV */
    } else if (parm == AFSOP_START_TRUNCDAEMON) {
	while (afs_initState < AFSOP_GO)
	    afs_osi_Sleep(&afs_initState);
	/* start the bkg daemon */
	afs_osi_Invisible();
	afs_CacheTruncateDaemon();
#ifdef	AFS_SGI_ENV
	AFS_GUNLOCK();
	exit(CLD_EXITED, 0);
#endif /* AFS_SGI_ENV */
    }
#if defined(AFS_SUN5_ENV) || defined(RXK_LISTENER_ENV)
    else if (parm == AFSOP_RXEVENT_DAEMON) {
	while (afs_initState < AFSOP_START_BKG)
	    afs_osi_Sleep(&afs_initState);
	afs_osi_Invisible();
	afs_rxevent_daemon();
#ifdef AFS_SGI_ENV
	AFS_GUNLOCK();
	exit(CLD_EXITED, 0);
#endif /* AFS_SGI_ENV */
    }
#endif /* AFS_SUN5_ENV || RXK_LISTENER_ENV */
#endif /* AFS_LINUX24_ENV && !UKERNEL */
    else if (parm == AFSOP_BASIC_INIT) {
	afs_int32 temp;

	while (!afs_InitSetup_done)
	    afs_osi_Sleep(&afs_InitSetup_done);

#if defined(AFS_SGI_ENV) || defined(AFS_HPUX_ENV) || defined(AFS_LINUX20_ENV) || defined(AFS_DARWIN_ENV) || defined(AFS_XBSD_ENV) || defined(AFS_SUN5_ENV)
	temp = AFS_MINBUFFERS;	/* Should fix this soon */
#else
	/* number of 2k buffers we could get from all of the buffer space */
	temp = ((afs_bufferpages * NBPG) >> 11);
	temp = temp >> 2;	/* don't take more than 25% (our magic parameter) */
	if (temp < AFS_MINBUFFERS)
	    temp = AFS_MINBUFFERS;	/* though we really should have this many */
#endif
	DInit(temp);
	afs_rootFid.Fid.Volume = 0;
	code = 0;
    } else if (parm == AFSOP_ADDCELL) {
	/* add a cell.  Parameter 2 is 8 hosts (in net order),  parm 3 is the null-terminated
	 * name.  Parameter 4 is the length of the name, including the null.  Parm 5 is the
	 * home cell flag (0x1 bit) and the nosuid flag (0x2 bit) */
	struct afsop_cell *tcell = afs_osi_Alloc(sizeof(struct afsop_cell));

	AFS_COPYIN((char *)parm2, (char *)tcell->hosts, sizeof(tcell->hosts),
		   code);
	if (!code) {
	    if (parm4 > sizeof(tcell->cellName))
		code = EFAULT;
	    else {
		AFS_COPYIN((char *)parm3, tcell->cellName, parm4, code);
		if (!code)
		    afs_NewCell(tcell->cellName, tcell->hosts, parm5, NULL, 0,
				0, 0);
	    }
	}
	afs_osi_Free(tcell, sizeof(struct afsop_cell));
    } else if (parm == AFSOP_ADDCELL2) {
	struct afsop_cell *tcell = afs_osi_Alloc(sizeof(struct afsop_cell));
	char *tbuffer = osi_AllocSmallSpace(AFS_SMALLOCSIZ), *lcnamep = 0;
	char *tbuffer1 = osi_AllocSmallSpace(AFS_SMALLOCSIZ);
	int cflags = parm4;

#if 0
	/* wait for basic init - XXX can't find any reason we need this? */
	while (afs_initState < AFSOP_START_BKG)
	    afs_osi_Sleep(&afs_initState);
#endif

	AFS_COPYIN((char *)parm2, (char *)tcell->hosts, sizeof(tcell->hosts),
		   code);
	if (!code) {
	    AFS_COPYINSTR((char *)parm3, tbuffer1, AFS_SMALLOCSIZ,
			  &bufferSize, code);
	    if (!code) {
		if (parm4 & 4) {
		    AFS_COPYINSTR((char *)parm5, tbuffer, AFS_SMALLOCSIZ,
				  &bufferSize, code);
		    if (!code) {
			lcnamep = tbuffer;
			cflags |= CLinkedCell;
		    }
		}
		if (!code)
		    code =
			afs_NewCell(tbuffer1, tcell->hosts, cflags, lcnamep,
				    0, 0, 0);
	    }
	}
	afs_osi_Free(tcell, sizeof(struct afsop_cell));
	osi_FreeSmallSpace(tbuffer);
	osi_FreeSmallSpace(tbuffer1);
    } else if (parm == AFSOP_ADDCELLALIAS) {
	/*
	 * Call arguments:
	 * parm2 is the alias name
	 * parm3 is the real cell name
	 */
	char *aliasName = osi_AllocSmallSpace(AFS_SMALLOCSIZ);
	char *cellName = osi_AllocSmallSpace(AFS_SMALLOCSIZ);

	AFS_COPYINSTR((char *)parm2, aliasName, AFS_SMALLOCSIZ, &bufferSize,
		      code);
	if (!code)
	    AFS_COPYINSTR((char *)parm3, cellName, AFS_SMALLOCSIZ,
			  &bufferSize, code);
	if (!code)
	    afs_NewCellAlias(aliasName, cellName);
	osi_FreeSmallSpace(aliasName);
	osi_FreeSmallSpace(cellName);
    } else if (parm == AFSOP_SET_THISCELL) {
	/*
	 * Call arguments:
	 * parm2 is the primary cell name
	 */
	char *cell = osi_AllocSmallSpace(AFS_SMALLOCSIZ);

	AFS_COPYINSTR((char *)parm2, cell, AFS_SMALLOCSIZ, &bufferSize, code);
	if (!code)
	    afs_SetPrimaryCell(cell);
	osi_FreeSmallSpace(cell);
    } else if (parm == AFSOP_CACHEINIT) {
	struct afs_cacheParams cparms;

	if (afs_CacheInit_Done)
	    goto out;

	AFS_COPYIN((char *)parm2, (caddr_t) & cparms, sizeof(cparms), code);
	if (code) {
#if defined(KERNEL_HAVE_UERROR)
	    setuerror(code);
	    code = -1;
#endif
	    goto out;
	}
	afs_CacheInit_Done = 1;
	{
	    struct afs_icl_log *logp;
	    /* initialize the ICL system */
	    code = afs_icl_CreateLog("cmfx", 60 * 1024, &logp);
	    if (code == 0)
		code =
		    afs_icl_CreateSetWithFlags("cm", logp, NULL,
					       ICL_CRSET_FLAG_DEFAULT_OFF,
					       &afs_iclSetp);
	    code =
		afs_icl_CreateSet("cmlongterm", logp, NULL,
				  &afs_iclLongTermSetp);
	}
	afs_setTime = cparms.setTimeFlag;

	code =
	    afs_CacheInit(cparms.cacheScaches, cparms.cacheFiles,
			  cparms.cacheBlocks, cparms.cacheDcaches,
			  cparms.cacheVolumes, cparms.chunkSize,
			  cparms.memCacheFlag, cparms.inodes, cparms.users);

    } else if (parm == AFSOP_CACHEINODE) {
	ino_t ainode = parm2;
	/* wait for basic init */
	while (afs_initState < AFSOP_START_BKG)
	    afs_osi_Sleep(&afs_initState);

#ifdef AFS_DARWIN80_ENV
	get_vfs_context();
#endif
	/* do it by inode */
#ifdef AFS_SGI62_ENV
	ainode = (ainode << 32) | (parm3 & 0xffffffff);
#endif
	code = afs_InitCacheFile(NULL, ainode);
#ifdef AFS_DARWIN80_ENV
	put_vfs_context();
#endif
    } else if (parm == AFSOP_CACHEDIRS) {
	afs_numfilesperdir = parm2;
	afs_osi_Wakeup(&afs_initState);
    } else if (parm == AFSOP_CACHEFILES) {
	afs_numcachefiles = parm2;
	afs_osi_Wakeup(&afs_initState);
    } else if (parm == AFSOP_ROOTVOLUME) {
	/* wait for basic init */
	while (afs_initState < AFSOP_START_BKG)
	    afs_osi_Sleep(&afs_initState);

	if (parm2) {
	    AFS_COPYINSTR((char *)parm2, afs_rootVolumeName,
			  sizeof(afs_rootVolumeName), &bufferSize, code);
	    afs_rootVolumeName[sizeof(afs_rootVolumeName) - 1] = 0;
	} else
	    code = 0;
    } else if (parm == AFSOP_CACHEFILE || parm == AFSOP_CACHEINFO
	       || parm == AFSOP_VOLUMEINFO || parm == AFSOP_AFSLOG
	       || parm == AFSOP_CELLINFO || parm == AFSOP_CACHEBASEDIR) {
	char *tbuffer = osi_AllocSmallSpace(AFS_SMALLOCSIZ);

	code = 0;
	AFS_COPYINSTR((char *)parm2, tbuffer, AFS_SMALLOCSIZ, &bufferSize,
		      code);
	if (code) {
	    osi_FreeSmallSpace(tbuffer);
	    goto out;
	}
	if (!code) {
	    tbuffer[AFS_SMALLOCSIZ - 1] = '\0';	/* null-terminate the name */
	    /* We have the cache dir copied in.  Call the cache init routine */
#ifdef AFS_DARWIN80_ENV
	    get_vfs_context();
#endif
	    if (parm == AFSOP_CACHEBASEDIR) {
		strncpy(afs_cachebasedir, tbuffer, 1024);
		afs_cachebasedir[1023] = '\0';
		afs_osi_Wakeup(&afs_initState);
	    } else if (parm == AFSOP_CACHEFILE) {
		wait_for_cachedefs();
		code = afs_InitCacheFile(tbuffer, 0);
	    } else if (parm == AFSOP_CACHEINFO) {
		wait_for_cachedefs();
		code = afs_InitCacheInfo(tbuffer);
	    } else if (parm == AFSOP_VOLUMEINFO) {
		wait_for_cachedefs();
		code = afs_InitVolumeInfo(tbuffer);
	    } else if (parm == AFSOP_CELLINFO) {
		wait_for_cachedefs();
		code = afs_InitCellInfo(tbuffer);
	    }
#ifdef AFS_DARWIN80_ENV
	    put_vfs_context();
#endif
	}
	osi_FreeSmallSpace(tbuffer);
    } else if (parm == AFSOP_GO) {
#ifdef AFS_CACHE_VNODE_PATH
       afs_int32 dummy;

       wait_for_cachedefs();

#ifdef AFS_DARWIN80_ENV
       get_vfs_context();
#endif
       if ((afs_numcachefiles > 0) && (afs_numfilesperdir > 0) && 
           (afs_cachebasedir[0] == '/')) {
           for (dummy = 0; dummy < afs_numcachefiles; dummy++) {
               code = afs_InitCacheFile(NULL, dummy);
           }
       }
#ifdef AFS_DARWIN80_ENV
       put_vfs_context();
#endif
#endif
	/* the generic initialization calls come here.  One parameter: should we do the
	 * set-time operation on this workstation */
	if (afs_Go_Done)
	    goto out;
	afs_Go_Done = 1;
	while (afs_initState < AFSOP_GO)
	    afs_osi_Sleep(&afs_initState);
	afs_initState = 101;
	afs_setTime = parm2;
	afs_osi_Wakeup(&afs_initState);
#if	(!defined(AFS_NONFSTRANS)) || defined(AFS_AIX_IAUTH_ENV)
	afs_nfsclient_init();
#endif
	afs_uuid_create(&afs_cb_interface.uuid);
	printf("found %d non-empty cache files (%d%%).\n",
	       afs_stats_cmperf.cacheFilesReused,
	       (100 * afs_stats_cmperf.cacheFilesReused) /
	       (afs_stats_cmperf.cacheNumEntries ? afs_stats_cmperf.
		cacheNumEntries : 1));
    } else if (parm == AFSOP_ADVISEADDR) {
	/* pass in the host address to the rx package */
	int rxbind = 0;
	int refresh = 0;

	afs_int32 count = parm2;
	afs_int32 *buffer =
	    afs_osi_Alloc(sizeof(afs_int32) * AFS_MAX_INTERFACE_ADDR);
	afs_int32 *maskbuffer =
	    afs_osi_Alloc(sizeof(afs_int32) * AFS_MAX_INTERFACE_ADDR);
	afs_int32 *mtubuffer =
	    afs_osi_Alloc(sizeof(afs_int32) * AFS_MAX_INTERFACE_ADDR);
	int i;

	/* This is a refresh */
	if (count & 0x40000000) {
	    count &= ~0x40000000;
	    /* Can't bind after we start. Fix? */
	    count &= ~0x80000000;
	    refresh = 1;
	}

	/* Bind, but only if there's only one address configured */ 
	if ( count & 0x80000000) {
	    count &= ~0x80000000;
	    if (count == 1)
		rxbind=1;
	}

	if (count > AFS_MAX_INTERFACE_ADDR) {
	    code = ENOMEM;
	    count = AFS_MAX_INTERFACE_ADDR;
	}

	AFS_COPYIN((char *)parm3, (char *)buffer, count * sizeof(afs_int32),
		   code);
	if (parm4)
	    AFS_COPYIN((char *)parm4, (char *)maskbuffer,
		       count * sizeof(afs_int32), code);
	if (parm5)
	    AFS_COPYIN((char *)parm5, (char *)mtubuffer,
		       count * sizeof(afs_int32), code);

	afs_cb_interface.numberOfInterfaces = count;
	for (i = 0; i < count; i++) {
	    afs_cb_interface.addr_in[i] = buffer[i];
#ifdef AFS_USERSPACE_IP_ADDR
	    /* AFS_USERSPACE_IP_ADDR means we have no way of finding the
	     * machines IP addresses when in the kernel (the in_ifaddr
	     * struct is not available), so we pass the info in at
	     * startup. We also pass in the subnetmask and mtu size. The
	     * subnetmask is used when setting the rank:
	     * afsi_SetServerIPRank(); and the mtu size is used when
	     * finding the best mtu size. rxi_FindIfnet() is replaced
	     * with rxi_Findcbi().
	     */
	    afs_cb_interface.subnetmask[i] =
		(parm4 ? maskbuffer[i] : 0xffffffff);
	    afs_cb_interface.mtu[i] = (parm5 ? mtubuffer[i] : htonl(1500));
#endif
	}
	rxi_setaddr(buffer[0]);
	if (!refresh) {
	    if (rxbind)
		rx_bindhost = buffer[0];
	    else
		rx_bindhost = htonl(INADDR_ANY);
	}

	afs_osi_Free(buffer, sizeof(afs_int32) * AFS_MAX_INTERFACE_ADDR);
	afs_osi_Free(maskbuffer, sizeof(afs_int32) * AFS_MAX_INTERFACE_ADDR);
	afs_osi_Free(mtubuffer, sizeof(afs_int32) * AFS_MAX_INTERFACE_ADDR);

	if (refresh) {
	    afs_CheckServers(1, NULL);     /* check down servers */
	    afs_CheckServers(0, NULL);     /* check down servers */
	}
    }
#ifdef	AFS_SGI53_ENV
    else if (parm == AFSOP_NFSSTATICADDR) {
	extern int (*nfs_rfsdisptab_v2) ();
	nfs_rfsdisptab_v2 = (int (*)())parm2;
    } else if (parm == AFSOP_NFSSTATICADDR2) {
	extern int (*nfs_rfsdisptab_v2) ();
#ifdef _K64U64
	nfs_rfsdisptab_v2 = (int (*)())((parm2 << 32) | (parm3 & 0xffffffff));
#else /* _K64U64 */
	nfs_rfsdisptab_v2 = (int (*)())(parm3 & 0xffffffff);
#endif /* _K64U64 */
    }
#if defined(AFS_SGI62_ENV) && !defined(AFS_SGI65_ENV)
    else if (parm == AFSOP_SBLOCKSTATICADDR2) {
	extern int (*afs_sblockp) ();
	extern void (*afs_sbunlockp) ();
#ifdef _K64U64
	afs_sblockp = (int (*)())((parm2 << 32) | (parm3 & 0xffffffff));
	afs_sbunlockp = (void (*)())((parm4 << 32) | (parm5 & 0xffffffff));
#else
	afs_sblockp = (int (*)())(parm3 & 0xffffffff);
	afs_sbunlockp = (void (*)())(parm5 & 0xffffffff);
#endif /* _K64U64 */
    }
#endif /* AFS_SGI62_ENV && !AFS_SGI65_ENV */
#endif /* AFS_SGI53_ENV */
    else if (parm == AFSOP_SHUTDOWN) {
	afs_cold_shutdown = 0;
	if (parm2 == 1)
	    afs_cold_shutdown = 1;
#ifndef AFS_DARWIN_ENV
	if (afs_globalVFS != 0) {
	    afs_warn("AFS isn't unmounted yet! Call aborted\n");
	    code = EACCES;
	} else
#endif
	    afs_shutdown();
    } else if (parm == AFSOP_AFS_VFSMOUNT) {
#ifdef	AFS_HPUX_ENV
	vfsmount(parm2, parm3, parm4, parm5);
#else /* defined(AFS_HPUX_ENV) */
#if defined(KERNEL_HAVE_UERROR)
	setuerror(EINVAL);
#else
	code = EINVAL;
#endif
#endif /* defined(AFS_HPUX_ENV) */
    } else if (parm == AFSOP_CLOSEWAIT) {
	afs_SynchronousCloses = 'S';
    } else if (parm == AFSOP_GETMTU) {
	afs_uint32 mtu = 0;
#if	!defined(AFS_SUN5_ENV) && !defined(AFS_LINUX20_ENV)
#ifdef AFS_USERSPACE_IP_ADDR
	afs_int32 i;
	i = rxi_Findcbi(parm2);
	mtu = ((i == -1) ? htonl(1500) : afs_cb_interface.mtu[i]);
#else /* AFS_USERSPACE_IP_ADDR */
	AFS_IFNET_T tifnp;

	tifnp = rxi_FindIfnet(parm2, NULL);	/*  make iterative */
	mtu = (tifnp ? ifnet_mtu(tifnp) : htonl(1500));
#endif /* else AFS_USERSPACE_IP_ADDR */
#endif /* !AFS_SUN5_ENV */
	if (!code)
	    AFS_COPYOUT((caddr_t) & mtu, (caddr_t) parm3, sizeof(afs_int32),
			code);
#ifdef AFS_AIX32_ENV
/* this is disabled for now because I can't figure out how to get access
 * to these kernel variables.  It's only for supporting user-mode rx
 * programs -- it makes a huge difference on the 220's in my testbed,
 * though I don't know why. The bosserver does this with /etc/no, so it's
 * being handled a different way for the servers right now.  */
/*      {
	static adjusted = 0;
	extern u_long sb_max_dflt;
	if (!adjusted) {
	  adjusted = 1;
	  if (sb_max_dflt < 131072) sb_max_dflt = 131072; 
	  if (sb_max < 131072) sb_max = 131072; 
	}
      } */
#endif /* AFS_AIX32_ENV */
    } else if (parm == AFSOP_GETMASK) {	/* parm2 == addr in net order */
	afs_uint32 mask = 0;
#if	!defined(AFS_SUN5_ENV)
#ifdef AFS_USERSPACE_IP_ADDR
	afs_int32 i;
	i = rxi_Findcbi(parm2);
	if (i != -1) {
	    mask = afs_cb_interface.subnetmask[i];
	} else {
	    code = -1;
	}
#else /* AFS_USERSPACE_IP_ADDR */
	AFS_IFNET_T tifnp;

	tifnp = rxi_FindIfnet(parm2, &mask);	/* make iterative */
	if (!tifnp)
	    code = -1;
#endif /* else AFS_USERSPACE_IP_ADDR */
#endif /* !AFS_SUN5_ENV */
	if (!code)
	    AFS_COPYOUT((caddr_t) & mask, (caddr_t) parm3, sizeof(afs_int32),
			code);
    }
#ifdef AFS_AFSDB_ENV
    else if (parm == AFSOP_AFSDB_HANDLER) {
	int sizeArg = (int)parm4;
	int kmsgLen = sizeArg & 0xffff;
	int cellLen = (sizeArg & 0xffff0000) >> 16;
	afs_int32 *kmsg = afs_osi_Alloc(kmsgLen);
	char *cellname = afs_osi_Alloc(cellLen);

#ifndef UKERNEL
	afs_osi_MaskUserLoop();
#endif
	AFS_COPYIN((afs_int32 *) parm2, cellname, cellLen, code);
	AFS_COPYIN((afs_int32 *) parm3, kmsg, kmsgLen, code);
	if (!code) {
	    code = afs_AFSDBHandler(cellname, cellLen, kmsg);
	    if (*cellname == 1)
		*cellname = 0;
	    if (code == -2) {	/* Shutting down? */
		*cellname = 1;
		code = 0;
	    }
	}
	if (!code)
	    AFS_COPYOUT(cellname, (char *)parm2, cellLen, code);
	afs_osi_Free(kmsg, kmsgLen);
	afs_osi_Free(cellname, cellLen);
    }
#endif
    else if (parm == AFSOP_SET_DYNROOT) {
	code = afs_SetDynrootEnable(parm2);
    } else if (parm == AFSOP_SET_FAKESTAT) {
	afs_fakestat_enable = parm2;
	code = 0;
    } else if (parm == AFSOP_SET_BACKUPTREE) {
	afs_bkvolpref = parm2;
    } else if (parm == AFSOP_SET_RXPCK) {
	rx_extraPackets = parm2;
	afscall_set_rxpck_received = 1;
    } else
	code = EINVAL;

  out:
    AFS_GUNLOCK();
#ifdef AFS_LINUX20_ENV
    return -code;
#else
    return code;
#endif
}

#ifdef AFS_AIX32_ENV

#include "sys/lockl.h"

/*
 * syscall -	this is the VRMIX system call entry point.
 *
 * NOTE:
 *	THIS SHOULD BE CHANGED TO afs_syscall(), but requires
 *	all the user-level calls to `syscall' to change.
 */
syscall(syscall, p1, p2, p3, p4, p5, p6)
{
    register rval1 = 0, code;
    register monster;
    int retval = 0;
#ifndef AFS_AIX41_ENV
    extern lock_t kernel_lock;
    monster = lockl(&kernel_lock, LOCK_SHORT);
#endif /* !AFS_AIX41_ENV */

    AFS_STATCNT(syscall);
    setuerror(0);
    switch (syscall) {
    case AFSCALL_CALL:
	rval1 = afs_syscall_call(p1, p2, p3, p4, p5, p6);
	break;

    case AFSCALL_SETPAG:
	AFS_GLOCK();
	rval1 = afs_setpag();
	AFS_GUNLOCK();
	break;

    case AFSCALL_PIOCTL:
	AFS_GLOCK();
	rval1 = afs_syscall_pioctl(p1, p2, p3, p4);
	AFS_GUNLOCK();
	break;

    case AFSCALL_ICREATE:
	rval1 = afs_syscall_icreate(p1, p2, p3, p4, p5, p6);
	break;

    case AFSCALL_IOPEN:
	rval1 = afs_syscall_iopen(p1, p2, p3);
	break;

    case AFSCALL_IDEC:
	rval1 = afs_syscall_iincdec(p1, p2, p3, -1);
	break;

    case AFSCALL_IINC:
	rval1 = afs_syscall_iincdec(p1, p2, p3, 1);
	break;

    case AFSCALL_ICL:
	AFS_GLOCK();
	code = Afscall_icl(p1, p2, p3, p4, p5, &retval);
	AFS_GUNLOCK();
	if (!code)
	    rval1 = retval;
	if (!rval1)
	    rval1 = code;
	break;

    default:
	rval1 = EINVAL;
	setuerror(EINVAL);
	break;
    }

  out:
#ifndef AFS_AIX41_ENV
    if (monster != LOCK_NEST)
	unlockl(&kernel_lock);
#endif /* !AFS_AIX41_ENV */
    return getuerror()? -1 : rval1;
}

/*
 * lsetpag -	interface to afs_setpag().
 */
lsetpag()
{

    AFS_STATCNT(lsetpag);
    return syscall(AFSCALL_SETPAG, 0, 0, 0, 0, 0);
}

/*
 * lpioctl -	interface to pioctl()
 */
lpioctl(path, cmd, cmarg, follow)
     char *path, *cmarg;
{

    AFS_STATCNT(lpioctl);
    return syscall(AFSCALL_PIOCTL, path, cmd, cmarg, follow);
}

#else /* !AFS_AIX32_ENV       */

#if defined(AFS_SGI_ENV)
struct afsargs {
    sysarg_t syscall;
    sysarg_t parm1;
    sysarg_t parm2;
    sysarg_t parm3;
    sysarg_t parm4;
    sysarg_t parm5;
};


int
Afs_syscall(struct afsargs *uap, rval_t * rvp)
{
    int error;
    long retval;

    AFS_STATCNT(afs_syscall);
    switch (uap->syscall) {
    case AFSCALL_ICL:
	retval = 0;
	AFS_GLOCK();
	error =
	    Afscall_icl(uap->parm1, uap->parm2, uap->parm3, uap->parm4,
			uap->parm5, &retval);
	AFS_GUNLOCK();
	rvp->r_val1 = retval;
	break;
#ifdef AFS_SGI_XFS_IOPS_ENV
    case AFSCALL_IDEC64:
	error =
	    afs_syscall_idec64(uap->parm1, uap->parm2, uap->parm3, uap->parm4,
			       uap->parm5);
	break;
    case AFSCALL_IINC64:
	error =
	    afs_syscall_iinc64(uap->parm1, uap->parm2, uap->parm3, uap->parm4,
			       uap->parm5);
	break;
    case AFSCALL_ILISTINODE64:
	error =
	    afs_syscall_ilistinode64(uap->parm1, uap->parm2, uap->parm3,
				     uap->parm4, uap->parm5);
	break;
    case AFSCALL_ICREATENAME64:
	error =
	    afs_syscall_icreatename64(uap->parm1, uap->parm2, uap->parm3,
				      uap->parm4, uap->parm5);
	break;
#endif
#ifdef AFS_SGI_VNODE_GLUE
    case AFSCALL_INIT_KERNEL_CONFIG:
	error = afs_init_kernel_config(uap->parm1);
	break;
#endif
    default:
	error =
	    afs_syscall_call(uap->syscall, uap->parm1, uap->parm2, uap->parm3,
			     uap->parm4, uap->parm5);
    }
    return error;
}

#else /* AFS_SGI_ENV */

struct iparam {
    long param1;
    long param2;
    long param3;
    long param4;
};

struct iparam32 {
    int param1;
    int param2;
    int param3;
    int param4;
};


#if defined(AFS_HPUX_64BIT_ENV) || defined(AFS_SUN57_64BIT_ENV) || (defined(AFS_LINUX_64BIT_KERNEL) && !defined(AFS_ALPHA_LINUX20_ENV) && !defined(AFS_IA64_LINUX20_ENV))
static void
iparam32_to_iparam(const struct iparam32 *src, struct iparam *dst)
{
    dst->param1 = src->param1;
    dst->param2 = src->param2;
    dst->param3 = src->param3;
    dst->param4 = src->param4;
}
#endif

/*
 * If you need to change copyin_iparam(), you may also need to change
 * copyin_afs_ioctl().
 */

static int
copyin_iparam(caddr_t cmarg, struct iparam *dst)
{
    int code;

#if defined(AFS_HPUX_64BIT_ENV)
    struct iparam32 dst32;

    if (is_32bit(u.u_procp)) {	/* is_32bit() in proc_iface.h */
	AFS_COPYIN(cmarg, (caddr_t) & dst32, sizeof dst32, code);
	if (!code)
	    iparam32_to_iparam(&dst32, dst);
	return code;
    }
#endif /* AFS_HPUX_64BIT_ENV */

#if defined(AFS_SUN57_64BIT_ENV)
    struct iparam32 dst32;

    if (get_udatamodel() == DATAMODEL_ILP32) {
	AFS_COPYIN(cmarg, (caddr_t) & dst32, sizeof dst32, code);
	if (!code)
	    iparam32_to_iparam(&dst32, dst);
	return code;
    }
#endif /* AFS_SUN57_64BIT_ENV */

#if defined(AFS_LINUX_64BIT_KERNEL) && !defined(AFS_ALPHA_LINUX20_ENV) && !defined(AFS_IA64_LINUX20_ENV)
    struct iparam32 dst32;

#ifdef AFS_SPARC64_LINUX26_ENV
    if (test_thread_flag(TIF_32BIT))
#elif defined(AFS_SPARC64_LINUX24_ENV)
    if (current->thread.flags & SPARC_FLAG_32BIT)
#elif defined(AFS_SPARC64_LINUX20_ENV)
    if (current->tss.flags & SPARC_FLAG_32BIT)

#elif defined(AFS_AMD64_LINUX26_ENV)
    if (test_thread_flag(TIF_IA32))
#elif defined(AFS_AMD64_LINUX20_ENV)
    if (current->thread.flags & THREAD_IA32)

#elif defined(AFS_PPC64_LINUX26_ENV)
    if (current->thread_info->flags & _TIF_32BIT) 
#elif defined(AFS_PPC64_LINUX20_ENV)
    if (current->thread.flags & PPC_FLAG_32BIT) 

#elif defined(AFS_S390X_LINUX26_ENV)
    if (test_thread_flag(TIF_31BIT))
#elif defined(AFS_S390X_LINUX20_ENV)
    if (current->thread.flags & S390_FLAG_31BIT) 

#else
#error iparam32 not done for this linux platform
#endif
    {
	AFS_COPYIN(cmarg, (caddr_t) & dst32, sizeof dst32, code);
	if (!code)
	    iparam32_to_iparam(&dst32, dst);
	return code;
    }
#endif /* AFS_LINUX_64BIT_KERNEL */

    AFS_COPYIN(cmarg, (caddr_t) dst, sizeof *dst, code);
    return code;
}

/* Main entry of all afs system calls */
#ifdef	AFS_SUN5_ENV
extern int afs_sinited;

/** The 32 bit OS expects the members of this structure to be 32 bit
 * quantities and the 64 bit OS expects them as 64 bit quanties. Hence
 * to accomodate both, *long* is used instead of afs_int32
 */

#ifdef AFS_SUN57_ENV
struct afssysa {
    long syscall;
    long parm1;
    long parm2;
    long parm3;
    long parm4;
    long parm5;
    long parm6;
};
#else
struct afssysa {
    afs_int32 syscall;
    afs_int32 parm1;
    afs_int32 parm2;
    afs_int32 parm3;
    afs_int32 parm4;
    afs_int32 parm5;
    afs_int32 parm6;
};
#endif

Afs_syscall(register struct afssysa *uap, rval_t * rvp)
{
    int *retval = &rvp->r_val1;
#else /* AFS_SUN5_ENV */
#if	defined(AFS_OSF_ENV) || defined(AFS_DARWIN_ENV) || defined(AFS_XBSD_ENV)
int
afs3_syscall(p, args, retval)
#ifdef AFS_FBSD50_ENV
     struct thread *p;
#else
     struct proc *p;
#endif
     void *args;
     long *retval;
{
    register struct a {
	long syscall;
	long parm1;
	long parm2;
	long parm3;
	long parm4;
	long parm5;
	long parm6;
    } *uap = (struct a *)args;
#else /* AFS_OSF_ENV */
#ifdef AFS_LINUX20_ENV
struct afssysargs {
    long syscall;
    long parm1;
    long parm2;
    long parm3;
    long parm4;
    long parm5;
    long parm6;			/* not actually used - should be removed */
};
/* Linux system calls only set up for 5 arguments. */
asmlinkage long
afs_syscall(long syscall, long parm1, long parm2, long parm3, long parm4)
{
    struct afssysargs args, *uap = &args;
    long linux_ret = 0;
    long *retval = &linux_ret;
    long eparm[4];		/* matches AFSCALL_ICL in fstrace.c */
#ifdef AFS_SPARC64_LINUX24_ENV
    afs_int32 eparm32[4];
#endif
    /* eparm is also used by AFSCALL_CALL in afsd.c */
#else
#if defined(UKERNEL)
Afs_syscall()
{
    register struct a {
	long syscall;
	long parm1;
	long parm2;
	long parm3;
	long parm4;
	long parm5;
	long parm6;
    } *uap = (struct a *)u.u_ap;
#else /* UKERNEL */
int
Afs_syscall()
{
    register struct a {
	long syscall;
	long parm1;
	long parm2;
	long parm3;
	long parm4;
	long parm5;
	long parm6;
    } *uap = (struct a *)u.u_ap;
#endif /* UKERNEL */
#if defined(AFS_HPUX_ENV)
    long *retval = &u.u_rval1;
#else
    int *retval = &u.u_rval1;
#endif
#endif /* AFS_LINUX20_ENV */
#endif /* AFS_OSF_ENV */
#endif /* AFS_SUN5_ENV */
    register int code = 0;

    AFS_STATCNT(afs_syscall);
#ifdef        AFS_SUN5_ENV
    rvp->r_vals = 0;
    if (!afs_sinited) {
	return (ENODEV);
    }
#endif
#ifdef AFS_LINUX20_ENV
    lock_kernel();
    /* setup uap for use below - pull out the magic decoder ring to know
     * which syscalls have folded argument lists.
     */
    uap->syscall = syscall;
    uap->parm1 = parm1;
    uap->parm2 = parm2;
    uap->parm3 = parm3;
    if (syscall == AFSCALL_ICL || syscall == AFSCALL_CALL) {
#ifdef AFS_SPARC64_LINUX24_ENV
/* from arch/sparc64/kernel/sys_sparc32.c */
#define AA(__x)                                \
({     unsigned long __ret;            \
       __asm__ ("srl   %0, 0, %0"      \
                : "=r" (__ret)         \
                : "0" (__x));          \
       __ret;                          \
})


#ifdef AFS_SPARC64_LINUX26_ENV
	if (test_thread_flag(TIF_32BIT))
#else
	if (current->thread.flags & SPARC_FLAG_32BIT)
#endif
	{
	    AFS_COPYIN((char *)parm4, (char *)eparm32, sizeof(eparm32), code);
	    eparm[0] = AA(eparm32[0]);
	    eparm[1] = AA(eparm32[1]);
	    eparm[2] = AA(eparm32[2]);
#undef AA
	} else
#endif
	    AFS_COPYIN((char *)parm4, (char *)eparm, sizeof(eparm), code);
	uap->parm4 = eparm[0];
	uap->parm5 = eparm[1];
	uap->parm6 = eparm[2];
    } else {
	uap->parm4 = parm4;
	uap->parm5 = 0;
	uap->parm6 = 0;
    }
#endif
#if defined(AFS_DARWIN80_ENV)
    get_vfs_context();
    osi_Assert(*retval == 0);
#endif
#if defined(AFS_HPUX_ENV)
    /*
     * There used to be code here (duplicated from osi_Init()) for
     * initializing the semaphore used by AFS_GLOCK().  Was the
     * duplication to handle the case of a dynamically loaded kernel
     * module?
     */
    osi_InitGlock();
#endif
    if (uap->syscall == AFSCALL_CALL) {
#ifdef	AFS_SUN5_ENV
	code =
	    afs_syscall_call(uap->parm1, uap->parm2, uap->parm3, uap->parm4,
			     uap->parm5, uap->parm6, rvp, CRED());
#else
	code =
	    afs_syscall_call(uap->parm1, uap->parm2, uap->parm3, uap->parm4,
			     uap->parm5, uap->parm6);
#endif
    } else if (uap->syscall == AFSCALL_SETPAG) {
#ifdef	AFS_SUN5_ENV
	register proc_t *procp;

	procp = ttoproc(curthread);
	AFS_GLOCK();
	code = afs_setpag(&procp->p_cred);
	AFS_GUNLOCK();
#else
	AFS_GLOCK();
#if	defined(AFS_OSF_ENV) || defined(AFS_DARWIN_ENV) || defined(AFS_XBSD_ENV)
	code = afs_setpag(p, args, retval);
#else /* AFS_OSF_ENV */
	code = afs_setpag();
#endif
	AFS_GUNLOCK();
#endif
    } else if (uap->syscall == AFSCALL_PIOCTL) {
	AFS_GLOCK();
#if defined(AFS_SUN5_ENV)
	code =
	    afs_syscall_pioctl(uap->parm1, uap->parm2, uap->parm3, uap->parm4,
			       rvp, CRED());
#elif defined(AFS_FBSD50_ENV)
	code =
	    afs_syscall_pioctl(uap->parm1, uap->parm2, uap->parm3, uap->parm4,
			       p->td_ucred);
#elif defined(AFS_DARWIN80_ENV)
	code =
	    afs_syscall_pioctl(uap->parm1, uap->parm2, uap->parm3, uap->parm4,
			       kauth_cred_get());
#elif defined(AFS_DARWIN_ENV) || defined(AFS_XBSD_ENV)
	code =
	    afs_syscall_pioctl(uap->parm1, uap->parm2, uap->parm3, uap->parm4,
			       p->p_cred->pc_ucred);
#else
	code =
	    afs_syscall_pioctl(uap->parm1, uap->parm2, uap->parm3,
			       uap->parm4);
#endif
	AFS_GUNLOCK();
    } else if (uap->syscall == AFSCALL_ICREATE) {
	struct iparam iparams;

	code = copyin_iparam((char *)uap->parm3, &iparams);
	if (code) {
#if defined(KERNEL_HAVE_UERROR)
	    setuerror(code);
#endif
	} else
#ifdef	AFS_SUN5_ENV
	    code =
		afs_syscall_icreate(uap->parm1, uap->parm2, iparams.param1,
				    iparams.param2, iparams.param3,
				    iparams.param4, rvp, CRED());
#else
	    code =
		afs_syscall_icreate(uap->parm1, uap->parm2, iparams.param1,
				    iparams.param2,
#if defined(AFS_OSF_ENV) || defined(AFS_DARWIN_ENV) || defined(AFS_XBSD_ENV)
				    iparams.param3, iparams.param4, retval);
#else
				    iparams.param3, iparams.param4);
#endif
#endif /* AFS_SUN5_ENV */
    } else if (uap->syscall == AFSCALL_IOPEN) {
#ifdef	AFS_SUN5_ENV
	code =
	    afs_syscall_iopen(uap->parm1, uap->parm2, uap->parm3, rvp,
			      CRED());
#else
#if defined(AFS_OSF_ENV) || defined(AFS_DARWIN_ENV) || defined(AFS_XBSD_ENV)
	code = afs_syscall_iopen(uap->parm1, uap->parm2, uap->parm3, retval);
#else
	code = afs_syscall_iopen(uap->parm1, uap->parm2, uap->parm3);
#endif
#endif /* AFS_SUN5_ENV */
    } else if (uap->syscall == AFSCALL_IDEC) {
#ifdef	AFS_SUN5_ENV
	code =
	    afs_syscall_iincdec(uap->parm1, uap->parm2, uap->parm3, -1, rvp,
				CRED());
#else
	code = afs_syscall_iincdec(uap->parm1, uap->parm2, uap->parm3, -1);
#endif /* AFS_SUN5_ENV */
    } else if (uap->syscall == AFSCALL_IINC) {
#ifdef	AFS_SUN5_ENV
	code =
	    afs_syscall_iincdec(uap->parm1, uap->parm2, uap->parm3, 1, rvp,
				CRED());
#else
	code = afs_syscall_iincdec(uap->parm1, uap->parm2, uap->parm3, 1);
#endif /* AFS_SUN5_ENV */
    } else if (uap->syscall == AFSCALL_ICL) {
	AFS_GLOCK();
	code =
	    Afscall_icl(uap->parm1, uap->parm2, uap->parm3, uap->parm4,
			uap->parm5, retval);
	AFS_GUNLOCK();
#ifdef AFS_LINUX20_ENV
	if (!code) {
	    /* ICL commands can return values. */
	    code = -linux_ret;	/* Gets negated again at exit below */
	}
#else
	if (code) {
#if defined(KERNEL_HAVE_UERROR)
	    setuerror(code);
#endif
	}
#endif /* !AFS_LINUX20_ENV */
    } else {
#if defined(KERNEL_HAVE_UERROR)
	setuerror(EINVAL);
#else
	code = EINVAL;
#endif
    }

#if defined(AFS_DARWIN80_ENV)
    if (uap->syscall != AFSCALL_CALL)
	put_vfs_context();
#endif
#ifdef AFS_LINUX20_ENV
    code = -code;
    unlock_kernel();
#endif
    return code;
}
#endif /* AFS_SGI_ENV */
#endif /* !AFS_AIX32_ENV       */

/*
 * Initstate in the range 0 < x < 100 are early initialization states.
 * Initstate of 100 means a AFSOP_START operation has been done.  After this,
 *  the cache may be initialized.
 * Initstate of 101 means a AFSOP_GO operation has been done.  This operation
 *  is done after all the cache initialization has been done.
 * Initstate of 200 means that the volume has been looked up once, possibly
 *  incorrectly.
 * Initstate of 300 means that the volume has been *successfully* looked up.
 */
int
afs_CheckInit(void)
{
    register int code = 0;

    AFS_STATCNT(afs_CheckInit);
    if (afs_initState <= 100)
	code = ENXIO;		/* never finished init phase */
    else if (afs_initState == 101) {	/* init done, wait for afs_daemon */
	while (afs_initState < 200)
	    afs_osi_Sleep(&afs_initState);
    } else if (afs_initState == 200)
	code = ETIMEDOUT;	/* didn't find root volume */
    return code;
}

int afs_shuttingdown = 0;
void
afs_shutdown(void)
{
    extern short afs_brsDaemons;
    extern afs_int32 afs_CheckServerDaemonStarted;
    extern struct afs_osi_WaitHandle AFS_WaitHandler, AFS_CSWaitHandler;
    extern struct osi_file *afs_cacheInodep;

    AFS_STATCNT(afs_shutdown);
    if (afs_initState == 0) {
        afs_warn("AFS not initialized - not shutting down\n");
      return;
    }

    if (afs_shuttingdown)
	return;
    afs_shuttingdown = 1;
    if (afs_cold_shutdown)
	afs_warn("COLD ");
    else
	afs_warn("WARM ");
    afs_warn("shutting down of: CB... ");

    afs_termState = AFSOP_STOP_RXCALLBACK;
    rx_WakeupServerProcs();
#ifdef AFS_AIX51_ENV
    shutdown_rxkernel();
#endif
    /* shutdown_rxkernel(); */
    while (afs_termState == AFSOP_STOP_RXCALLBACK)
	afs_osi_Sleep(&afs_termState);

    afs_warn("afs... ");
    while (afs_termState == AFSOP_STOP_AFS) {
	afs_osi_CancelWait(&AFS_WaitHandler);
	afs_osi_Sleep(&afs_termState);
    }
    if (afs_CheckServerDaemonStarted) {
	while (afs_termState == AFSOP_STOP_CS) {
	    afs_osi_CancelWait(&AFS_CSWaitHandler);
	    afs_osi_Sleep(&afs_termState);
	}
    }
    afs_warn("BkG... ");
    /* Wake-up afs_brsDaemons so that we don't have to wait for a bkg job! */
    while (afs_termState == AFSOP_STOP_BKG) {
	afs_osi_Wakeup(&afs_brsDaemons);
	afs_osi_Sleep(&afs_termState);
    }
    afs_warn("CTrunc... ");
    /* Cancel cache truncate daemon. */
    while (afs_termState == AFSOP_STOP_TRUNCDAEMON) {
	afs_osi_Wakeup((char *)&afs_CacheTruncateDaemon);
	afs_osi_Sleep(&afs_termState);
    }
#ifdef AFS_AFSDB_ENV
    afs_warn("AFSDB... ");
    afs_StopAFSDB();
    while (afs_termState == AFSOP_STOP_AFSDB)
	afs_osi_Sleep(&afs_termState);
#endif
#if	defined(AFS_SUN5_ENV) || defined(RXK_LISTENER_ENV)
    afs_warn("RxEvent... ");
    /* cancel rx event daemon */
    while (afs_termState == AFSOP_STOP_RXEVENT)
	afs_osi_Sleep(&afs_termState);
#if defined(RXK_LISTENER_ENV)
#ifndef UKERNEL
    afs_warn("UnmaskRxkSignals... ");
    afs_osi_UnmaskRxkSignals();
#endif
    /* cancel rx listener */
    afs_warn("RxListener... ");
    osi_StopListener();		/* This closes rx_socket. */
    while (afs_termState == AFSOP_STOP_RXK_LISTENER) {
	afs_warn("Sleep... ");
	afs_osi_Sleep(&afs_termState);
    }
#endif
#else
    afs_termState = AFSOP_STOP_COMPLETE;
#endif
    afs_warn("\n");

    /* Close file only after daemons which can write to it are stopped. */
    if (afs_cacheInodep) {	/* memcache won't set this */
	osi_UFSClose(afs_cacheInodep);	/* Since we always leave it open */
	afs_cacheInodep = 0;
    }
    return;			/* Just kill daemons for now */
#ifdef notdef
    shutdown_CB();
    shutdown_AFS();
    shutdown_rxkernel();
    shutdown_rxevent();
    shutdown_rx();
    afs_shutdown_BKG();
    shutdown_bufferpackage();
#endif
#ifdef AFS_AIX51_ENV
    shutdown_daemons();
#endif
#ifdef notdef
    shutdown_cache();
    shutdown_osi();
    shutdown_osinet();
    shutdown_osifile();
    shutdown_vnodeops();
    shutdown_vfsops();
    shutdown_exporter();
    shutdown_memcache();
#if (!defined(AFS_NONFSTRANS) || defined(AFS_AIX_IAUTH_ENV)) && !defined(AFS_OSF_ENV)
    shutdown_nfsclnt();
#endif
    shutdown_afstest();
    /* The following hold the cm stats */
/*
    memset(&afs_cmstats, 0, sizeof(struct afs_CMStats));
    memset(&afs_stats_cmperf, 0, sizeof(struct afs_stats_CMPerf));
    memset(&afs_stats_cmfullperf, 0, sizeof(struct afs_stats_CMFullPerf));
*/
    afs_warn(" ALL allocated tables\n");
    afs_shuttingdown = 0;
#endif
}

void
shutdown_afstest(void)
{
    AFS_STATCNT(shutdown_afstest);
    afs_initState = afs_termState = afs_setTime = 0;
    AFS_Running = afs_CB_Running = 0;
    afs_CacheInit_Done = afs_Go_Done = 0;
    if (afs_cold_shutdown) {
	*afs_rootVolumeName = 0;
    }
}


/* In case there is a bunch of dynamically build bkg daemons to free */
void
afs_shutdown_BKG(void)
{
    AFS_STATCNT(shutdown_BKG);
}


#if defined(AFS_OSF_ENV) || defined(AFS_SGI61_ENV)
/* For SGI 6.2, this can is changed to 1 if it's a 32 bit kernel. */
#if defined(AFS_SGI62_ENV) && defined(KERNEL) && !defined(_K64U64)
int afs_icl_sizeofLong = 1;
#else
int afs_icl_sizeofLong = 2;
#endif /* SGI62 */
#else
#if defined(AFS_AIX51_ENV) && defined(AFS_64BIT_KERNEL)
int afs_icl_sizeofLong = 2;
#else
int afs_icl_sizeofLong = 1;
#endif
#endif

int afs_icl_inited = 0;

/* init function, called once, under afs_icl_lock */
int
afs_icl_Init(void)
{
    afs_icl_inited = 1;
    return 0;
}

extern struct afs_icl_log *afs_icl_FindLog();
extern struct afs_icl_set *afs_icl_FindSet();


static int
Afscall_icl(long opcode, long p1, long p2, long p3, long p4, long *retval)
{
    afs_int32 *lp, elts, flags;
    register afs_int32 code;
    struct afs_icl_log *logp;
    struct afs_icl_set *setp;
#if defined(AFS_SGI61_ENV) || defined(AFS_SUN57_ENV) || defined(AFS_DARWIN_ENV) || defined(AFS_XBSD_ENV)
    size_t temp;
#else /* AFS_SGI61_ENV */
#if defined(AFS_AIX51_ENV) && defined(AFS_64BIT_KERNEL)
    afs_uint64 temp;
#else
    afs_uint32 temp;
#endif
#endif /* AFS_SGI61_ENV */
    char tname[65];
    afs_int32 startCookie;
    afs_int32 allocated;
    struct afs_icl_log *tlp;

#ifdef	AFS_SUN5_ENV
    if (!afs_suser(CRED())) {	/* only root can run this code */
	return (EACCES);
    }
#else
    if (!afs_suser(NULL)) {	/* only root can run this code */
#if defined(KERNEL_HAVE_UERROR)
	setuerror(EACCES);
	return EACCES;
#else
	return EPERM;
#endif
    }
#endif
    switch (opcode) {
    case ICL_OP_COPYOUTCLR:	/* copy out data then clear */
    case ICL_OP_COPYOUT:	/* copy ouy data */
	/* copyout: p1=logname, p2=&buffer, p3=size(words), p4=&cookie
	 * return flags<<24 + nwords.
	 * updates cookie to updated start (not end) if we had to
	 * skip some records.
	 */
	AFS_COPYINSTR((char *)p1, tname, sizeof(tname), &temp, code);
	if (code)
	    return code;
	AFS_COPYIN((char *)p4, (char *)&startCookie, sizeof(afs_int32), code);
	if (code)
	    return code;
	logp = afs_icl_FindLog(tname);
	if (!logp)
	    return ENOENT;
#define	BUFFERSIZE	AFS_LRALLOCSIZ
	lp = (afs_int32 *) osi_AllocLargeSpace(AFS_LRALLOCSIZ);
	elts = BUFFERSIZE / sizeof(afs_int32);
	if (p3 < elts)
	    elts = p3;
	flags = (opcode == ICL_OP_COPYOUT) ? 0 : ICL_COPYOUTF_CLRAFTERREAD;
	code =
	    afs_icl_CopyOut(logp, lp, &elts, (afs_uint32 *) & startCookie,
			    &flags);
	if (code) {
	    osi_FreeLargeSpace((struct osi_buffer *)lp);
	    break;
	}
	AFS_COPYOUT((char *)lp, (char *)p2, elts * sizeof(afs_int32), code);
	if (code)
	    goto done;
	AFS_COPYOUT((char *)&startCookie, (char *)p4, sizeof(afs_int32),
		    code);
	if (code)
	    goto done;
#if defined(AFS_AIX51_ENV) && defined(AFS_64BIT_KERNEL)
	if (!(IS64U))
	    *retval = ((long)((flags << 24) | (elts & 0xffffff))) << 32;
	else
#endif
	    *retval = (flags << 24) | (elts & 0xffffff);
      done:
	afs_icl_LogRele(logp);
	osi_FreeLargeSpace((struct osi_buffer *)lp);
	break;

    case ICL_OP_ENUMLOGS:	/* enumerate logs */
	/* enumerate logs: p1=index, p2=&name, p3=sizeof(name), p4=&size.
	 * return 0 for success, otherwise error.
	 */
	for (tlp = afs_icl_allLogs; tlp; tlp = tlp->nextp) {
	    if (p1-- == 0)
		break;
	}
	if (!tlp)
	    return ENOENT;	/* past the end of file */
	temp = strlen(tlp->name) + 1;
	if (temp > p3)
	    return EINVAL;
	AFS_COPYOUT(tlp->name, (char *)p2, temp, code);
	if (!code)		/* copy out size of log */
	    AFS_COPYOUT((char *)&tlp->logSize, (char *)p4, sizeof(afs_int32),
			code);
	break;

    case ICL_OP_ENUMLOGSBYSET:	/* enumerate logs by set name */
	/* enumerate logs: p1=setname, p2=index, p3=&name, p4=sizeof(name).
	 * return 0 for success, otherwise error.
	 */
	AFS_COPYINSTR((char *)p1, tname, sizeof(tname), &temp, code);
	if (code)
	    return code;
	setp = afs_icl_FindSet(tname);
	if (!setp)
	    return ENOENT;
	if (p2 > ICL_LOGSPERSET)
	    return EINVAL;
	if (!(tlp = setp->logs[p2]))
	    return EBADF;
	temp = strlen(tlp->name) + 1;
	if (temp > p4)
	    return EINVAL;
	AFS_COPYOUT(tlp->name, (char *)p3, temp, code);
	break;

    case ICL_OP_CLRLOG:	/* clear specified log */
	/* zero out the specified log: p1=logname */
	AFS_COPYINSTR((char *)p1, tname, sizeof(tname), &temp, code);
	if (code)
	    return code;
	logp = afs_icl_FindLog(tname);
	if (!logp)
	    return ENOENT;
	code = afs_icl_ZeroLog(logp);
	afs_icl_LogRele(logp);
	break;

    case ICL_OP_CLRSET:	/* clear specified set */
	/* zero out the specified set: p1=setname */
	AFS_COPYINSTR((char *)p1, tname, sizeof(tname), &temp, code);
	if (code)
	    return code;
	setp = afs_icl_FindSet(tname);
	if (!setp)
	    return ENOENT;
	code = afs_icl_ZeroSet(setp);
	afs_icl_SetRele(setp);
	break;

    case ICL_OP_CLRALL:	/* clear all logs */
	/* zero out all logs -- no args */
	code = 0;
	ObtainWriteLock(&afs_icl_lock, 178);
	for (tlp = afs_icl_allLogs; tlp; tlp = tlp->nextp) {
	    tlp->refCount++;	/* hold this guy */
	    ReleaseWriteLock(&afs_icl_lock);
	    /* don't clear persistent logs */
	    if ((tlp->states & ICL_LOGF_PERSISTENT) == 0)
		code = afs_icl_ZeroLog(tlp);
	    ObtainWriteLock(&afs_icl_lock, 179);
	    if (--tlp->refCount == 0)
		afs_icl_ZapLog(tlp);
	    if (code)
		break;
	}
	ReleaseWriteLock(&afs_icl_lock);
	break;

    case ICL_OP_ENUMSETS:	/* enumerate all sets */
	/* enumerate sets: p1=index, p2=&name, p3=sizeof(name), p4=&states.
	 * return 0 for success, otherwise error.
	 */
	for (setp = afs_icl_allSets; setp; setp = setp->nextp) {
	    if (p1-- == 0)
		break;
	}
	if (!setp)
	    return ENOENT;	/* past the end of file */
	temp = strlen(setp->name) + 1;
	if (temp > p3)
	    return EINVAL;
	AFS_COPYOUT(setp->name, (char *)p2, temp, code);
	if (!code)		/* copy out size of log */
	    AFS_COPYOUT((char *)&setp->states, (char *)p4, sizeof(afs_int32),
			code);
	break;

    case ICL_OP_SETSTAT:	/* set status on a set */
	/* activate the specified set: p1=setname, p2=op */
	AFS_COPYINSTR((char *)p1, tname, sizeof(tname), &temp, code);
	if (code)
	    return code;
	setp = afs_icl_FindSet(tname);
	if (!setp)
	    return ENOENT;
	code = afs_icl_SetSetStat(setp, p2);
	afs_icl_SetRele(setp);
	break;

    case ICL_OP_SETSTATALL:	/* set status on all sets */
	/* activate the specified set: p1=op */
	code = 0;
	ObtainWriteLock(&afs_icl_lock, 180);
	for (setp = afs_icl_allSets; setp; setp = setp->nextp) {
	    setp->refCount++;	/* hold this guy */
	    ReleaseWriteLock(&afs_icl_lock);
	    /* don't set states on persistent sets */
	    if ((setp->states & ICL_SETF_PERSISTENT) == 0)
		code = afs_icl_SetSetStat(setp, p1);
	    ObtainWriteLock(&afs_icl_lock, 181);
	    if (--setp->refCount == 0)
		afs_icl_ZapSet(setp);
	    if (code)
		break;
	}
	ReleaseWriteLock(&afs_icl_lock);
	break;

    case ICL_OP_SETLOGSIZE:	/* set size of log */
	/* set the size of the specified log: p1=logname, p2=size (in words) */
	AFS_COPYINSTR((char *)p1, tname, sizeof(tname), &temp, code);
	if (code)
	    return code;
	logp = afs_icl_FindLog(tname);
	if (!logp)
	    return ENOENT;
	code = afs_icl_LogSetSize(logp, p2);
	afs_icl_LogRele(logp);
	break;

    case ICL_OP_GETLOGINFO:	/* get size of log */
	/* zero out the specified log: p1=logname, p2=&logSize, p3=&allocated */
	AFS_COPYINSTR((char *)p1, tname, sizeof(tname), &temp, code);
	if (code)
	    return code;
	logp = afs_icl_FindLog(tname);
	if (!logp)
	    return ENOENT;
	allocated = !!logp->datap;
	AFS_COPYOUT((char *)&logp->logSize, (char *)p2, sizeof(afs_int32),
		    code);
	if (!code)
	    AFS_COPYOUT((char *)&allocated, (char *)p3, sizeof(afs_int32),
			code);
	afs_icl_LogRele(logp);
	break;

    case ICL_OP_GETSETINFO:	/* get state of set */
	/* zero out the specified set: p1=setname, p2=&state */
	AFS_COPYINSTR((char *)p1, tname, sizeof(tname), &temp, code);
	if (code)
	    return code;
	setp = afs_icl_FindSet(tname);
	if (!setp)
	    return ENOENT;
	AFS_COPYOUT((char *)&setp->states, (char *)p2, sizeof(afs_int32),
		    code);
	afs_icl_SetRele(setp);
	break;

    default:
	code = EINVAL;
    }

    return code;
}


afs_lock_t afs_icl_lock;

/* exported routine: a 4 parameter event */
int
afs_icl_Event4(register struct afs_icl_set *setp, afs_int32 eventID,
	       afs_int32 lAndT, long p1, long p2, long p3, long p4)
{
    afs_int32 mask;
    register int i;
    register afs_int32 tmask;
    int ix;

    /* If things aren't init'ed yet (or the set is inactive), don't panic */
    if (!ICL_SETACTIVE(setp))
	return 0;

    AFS_ASSERT_GLOCK();
    mask = lAndT >> 24 & 0xff;	/* mask of which logs to log to */
    ix = ICL_EVENTBYTE(eventID);
    ObtainReadLock(&setp->lock);
    if (setp->eventFlags[ix] & ICL_EVENTMASK(eventID)) {
	for (i = 0, tmask = 1; i < ICL_LOGSPERSET; i++, tmask <<= 1) {
	    if (mask & tmask) {
		afs_icl_AppendRecord(setp->logs[i], eventID, lAndT & 0xffffff,
				     p1, p2, p3, p4);
	    }
	    mask &= ~tmask;
	    if (mask == 0)
		break;		/* break early */
	}
    }
    ReleaseReadLock(&setp->lock);
    return 0;
}

/* Next 4 routines should be implemented via var-args or something.
 * Whole purpose is to avoid compiler warnings about parameter # mismatches.
 * Otherwise, could call afs_icl_Event4 directly.
 */
int
afs_icl_Event3(register struct afs_icl_set *setp, afs_int32 eventID,
	       afs_int32 lAndT, long p1, long p2, long p3)
{
    return afs_icl_Event4(setp, eventID, lAndT, p1, p2, p3, (long)0);
}

int
afs_icl_Event2(register struct afs_icl_set *setp, afs_int32 eventID,
	       afs_int32 lAndT, long p1, long p2)
{
    return afs_icl_Event4(setp, eventID, lAndT, p1, p2, (long)0, (long)0);
}

int
afs_icl_Event1(register struct afs_icl_set *setp, afs_int32 eventID,
	       afs_int32 lAndT, long p1)
{
    return afs_icl_Event4(setp, eventID, lAndT, p1, (long)0, (long)0,
			  (long)0);
}

int
afs_icl_Event0(register struct afs_icl_set *setp, afs_int32 eventID,
	       afs_int32 lAndT)
{
    return afs_icl_Event4(setp, eventID, lAndT, (long)0, (long)0, (long)0,
			  (long)0);
}

struct afs_icl_log *afs_icl_allLogs = 0;

/* function to purge records from the start of the log, until there
 * is at least minSpace long's worth of space available without
 * making the head and the tail point to the same word.
 *
 * Log must be write-locked.
 */
static void
afs_icl_GetLogSpace(register struct afs_icl_log *logp, afs_int32 minSpace)
{
    register unsigned int tsize;

    while (logp->logSize - logp->logElements <= minSpace) {
	/* eat a record */
	tsize = ((logp->datap[logp->firstUsed]) >> 24) & 0xff;
	logp->logElements -= tsize;
	logp->firstUsed += tsize;
	if (logp->firstUsed >= logp->logSize)
	    logp->firstUsed -= logp->logSize;
	logp->baseCookie += tsize;
    }
}

/* append string astr to buffer, including terminating null char.
 *
 * log must be write-locked.
 */
#define ICL_CHARSPERLONG	4
static void
afs_icl_AppendString(struct afs_icl_log *logp, char *astr)
{
    char *op;			/* ptr to char to write */
    int tc;
    register int bib;		/* bytes in buffer */

    bib = 0;
    op = (char *)&(logp->datap[logp->firstFree]);
    while (1) {
	tc = *astr++;
	*op++ = tc;
	if (++bib >= ICL_CHARSPERLONG) {
	    /* new word */
	    bib = 0;
	    if (++(logp->firstFree) >= logp->logSize) {
		logp->firstFree = 0;
		op = (char *)&(logp->datap[0]);
	    }
	    logp->logElements++;
	}
	if (tc == 0)
	    break;
    }
    if (bib > 0) {
	/* if we've used this word at all, allocate it */
	if (++(logp->firstFree) >= logp->logSize) {
	    logp->firstFree = 0;
	}
	logp->logElements++;
    }
}

/* add a long to the log, ignoring overflow (checked already) */
#define ICL_APPENDINT32(lp, x) \
    MACRO_BEGIN \
        (lp)->datap[(lp)->firstFree] = (x); \
	if (++((lp)->firstFree) >= (lp)->logSize) { \
		(lp)->firstFree = 0; \
	} \
        (lp)->logElements++; \
    MACRO_END

#if defined(AFS_OSF_ENV) || (defined(AFS_SGI61_ENV) && (_MIPS_SZLONG==64)) || (defined(AFS_AIX51_ENV) && defined(AFS_64BIT_KERNEL))
#define ICL_APPENDLONG(lp, x) \
    MACRO_BEGIN \
	ICL_APPENDINT32((lp), ((x) >> 32) & 0xffffffffL); \
	ICL_APPENDINT32((lp), (x) & 0xffffffffL); \
    MACRO_END

#else /* AFS_OSF_ENV */
#define ICL_APPENDLONG(lp, x) ICL_APPENDINT32((lp), (x))
#endif /* AFS_OSF_ENV */

/* routine to tell whether we're dealing with the address or the
 * object itself
 */
int
afs_icl_UseAddr(int type)
{
    if (type == ICL_TYPE_HYPER || type == ICL_TYPE_STRING
	|| type == ICL_TYPE_FID || type == ICL_TYPE_INT64)
	return 1;
    else
	return 0;
}

/* Function to append a record to the log.  Written for speed
 * since we know that we're going to have to make this work fast
 * pretty soon, anyway.  The log must be unlocked.
 */

void
afs_icl_AppendRecord(register struct afs_icl_log *logp, afs_int32 op,
		     afs_int32 types, long p1, long p2, long p3, long p4)
{
    int rsize;			/* record size in longs */
    register int tsize;		/* temp size */
    osi_timeval_t tv;
    int t1, t2, t3, t4;

    t4 = types & 0x3f;		/* decode types */
    types >>= 6;
    t3 = types & 0x3f;
    types >>= 6;
    t2 = types & 0x3f;
    types >>= 6;
    t1 = types & 0x3f;

    osi_GetTime(&tv);		/* It panics for solaris if inside */
    ObtainWriteLock(&logp->lock, 182);
    if (!logp->datap) {
	ReleaseWriteLock(&logp->lock);
	return;
    }

    /* get timestamp as # of microseconds since some time that doesn't
     * change that often.  This algorithm ticks over every 20 minutes
     * or so (1000 seconds).  Write a timestamp record if it has.
     */
    if (tv.tv_sec - logp->lastTS > 1024) {
	/* the timer has wrapped -- write a timestamp record */
	if (logp->logSize - logp->logElements <= 5)
	    afs_icl_GetLogSpace(logp, 5);

	ICL_APPENDINT32(logp,
			(afs_int32) (5 << 24) + (ICL_TYPE_UNIXDATE << 18));
	ICL_APPENDINT32(logp, (afs_int32) ICL_INFO_TIMESTAMP);
	ICL_APPENDINT32(logp, (afs_int32) 0);	/* use thread ID zero for clocks */
	ICL_APPENDINT32(logp,
			(afs_int32) (tv.tv_sec & 0x3ff) * 1000000 +
			tv.tv_usec);
	ICL_APPENDINT32(logp, (afs_int32) tv.tv_sec);

	logp->lastTS = tv.tv_sec;
    }

    rsize = 4;			/* base case */
    if (t1) {
	/* compute size of parameter p1.  Only tricky case is string.
	 * In that case, we have to call strlen to get the string length.
	 */
	ICL_SIZEHACK(t1, p1);
    }
    if (t2) {
	/* compute size of parameter p2.  Only tricky case is string.
	 * In that case, we have to call strlen to get the string length.
	 */
	ICL_SIZEHACK(t2, p2);
    }
    if (t3) {
	/* compute size of parameter p3.  Only tricky case is string.
	 * In that case, we have to call strlen to get the string length.
	 */
	ICL_SIZEHACK(t3, p3);
    }
    if (t4) {
	/* compute size of parameter p4.  Only tricky case is string.
	 * In that case, we have to call strlen to get the string length.
	 */
	ICL_SIZEHACK(t4, p4);
    }

    /* At this point, we've computed all of the parameter sizes, and
     * have in rsize the size of the entire record we want to append.
     * Next, we check that we actually have room in the log to do this
     * work, and then we do the append.
     */
    if (rsize > 255) {
	ReleaseWriteLock(&logp->lock);
	return;			/* log record too big to express */
    }

    if (logp->logSize - logp->logElements <= rsize)
	afs_icl_GetLogSpace(logp, rsize);

    ICL_APPENDINT32(logp,
		    (afs_int32) (rsize << 24) + (t1 << 18) + (t2 << 12) +
		    (t3 << 6) + t4);
    ICL_APPENDINT32(logp, (afs_int32) op);
    ICL_APPENDINT32(logp, (afs_int32) osi_ThreadUnique());
    ICL_APPENDINT32(logp,
		    (afs_int32) (tv.tv_sec & 0x3ff) * 1000000 + tv.tv_usec);

    if (t1) {
	/* marshall parameter 1 now */
	if (t1 == ICL_TYPE_STRING) {
	    afs_icl_AppendString(logp, (char *)p1);
	} else if (t1 == ICL_TYPE_HYPER) {
	    ICL_APPENDINT32(logp,
			    (afs_int32) ((struct afs_hyper_t *)p1)->high);
	    ICL_APPENDINT32(logp,
			    (afs_int32) ((struct afs_hyper_t *)p1)->low);
	} else if (t1 == ICL_TYPE_INT64) {
#ifndef WORDS_BIGENDIAN
#ifdef AFS_64BIT_CLIENT
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p1)[1]);
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p1)[0]);
#else /* AFS_64BIT_CLIENT */
	    ICL_APPENDINT32(logp, (afs_int32) p1);
	    ICL_APPENDINT32(logp, (afs_int32) 0);
#endif /* AFS_64BIT_CLIENT */
#else /* AFSLITTLE_ENDIAN */
#ifdef AFS_64BIT_CLIENT
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p1)[0]);
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p1)[1]);
#else /* AFS_64BIT_CLIENT */
	    ICL_APPENDINT32(logp, (afs_int32) 0);
	    ICL_APPENDINT32(logp, (afs_int32) p1);
#endif /* AFS_64BIT_CLIENT */
#endif /* AFSLITTLE_ENDIAN */
	} else if (t1 == ICL_TYPE_FID) {
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p1)[0]);
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p1)[1]);
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p1)[2]);
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p1)[3]);
	}
#if defined(AFS_OSF_ENV) || (defined(AFS_SGI61_ENV) && (_MIPS_SZLONG==64)) || (defined(AFS_AIX51_ENV) && defined(AFS_64BIT_KERNEL))
	else if (t1 == ICL_TYPE_INT32)
	    ICL_APPENDINT32(logp, (afs_int32) p1);
#endif /* AFS_OSF_ENV */
	else
	    ICL_APPENDLONG(logp, p1);
    }
    if (t2) {
	/* marshall parameter 2 now */
	if (t2 == ICL_TYPE_STRING)
	    afs_icl_AppendString(logp, (char *)p2);
	else if (t2 == ICL_TYPE_HYPER) {
	    ICL_APPENDINT32(logp,
			    (afs_int32) ((struct afs_hyper_t *)p2)->high);
	    ICL_APPENDINT32(logp,
			    (afs_int32) ((struct afs_hyper_t *)p2)->low);
	} else if (t2 == ICL_TYPE_INT64) {
#ifndef WORDS_BIGENDIAN
#ifdef AFS_64BIT_CLIENT
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p2)[1]);
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p2)[0]);
#else /* AFS_64BIT_CLIENT */
	    ICL_APPENDINT32(logp, (afs_int32) p2);
	    ICL_APPENDINT32(logp, (afs_int32) 0);
#endif /* AFS_64BIT_CLIENT */
#else /* AFSLITTLE_ENDIAN */
#ifdef AFS_64BIT_CLIENT
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p2)[0]);
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p2)[1]);
#else /* AFS_64BIT_CLIENT */
	    ICL_APPENDINT32(logp, (afs_int32) 0);
	    ICL_APPENDINT32(logp, (afs_int32) p2);
#endif /* AFS_64BIT_CLIENT */
#endif /* AFSLITTLE_ENDIAN */
	} else if (t2 == ICL_TYPE_FID) {
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p2)[0]);
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p2)[1]);
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p2)[2]);
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p2)[3]);
	}
#if defined(AFS_OSF_ENV) || (defined(AFS_SGI61_ENV) && (_MIPS_SZLONG==64)) || (defined(AFS_AIX51_ENV) && defined(AFS_64BIT_KERNEL))
	else if (t2 == ICL_TYPE_INT32)
	    ICL_APPENDINT32(logp, (afs_int32) p2);
#endif /* AFS_OSF_ENV */
	else
	    ICL_APPENDLONG(logp, p2);
    }
    if (t3) {
	/* marshall parameter 3 now */
	if (t3 == ICL_TYPE_STRING)
	    afs_icl_AppendString(logp, (char *)p3);
	else if (t3 == ICL_TYPE_HYPER) {
	    ICL_APPENDINT32(logp,
			    (afs_int32) ((struct afs_hyper_t *)p3)->high);
	    ICL_APPENDINT32(logp,
			    (afs_int32) ((struct afs_hyper_t *)p3)->low);
	} else if (t3 == ICL_TYPE_INT64) {
#ifndef WORDS_BIGENDIAN
#ifdef AFS_64BIT_CLIENT
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p3)[1]);
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p3)[0]);
#else /* AFS_64BIT_CLIENT */
	    ICL_APPENDINT32(logp, (afs_int32) p3);
	    ICL_APPENDINT32(logp, (afs_int32) 0);
#endif /* AFS_64BIT_CLIENT */
#else /* AFSLITTLE_ENDIAN */
#ifdef AFS_64BIT_CLIENT
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p3)[0]);
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p3)[1]);
#else /* AFS_64BIT_CLIENT */
	    ICL_APPENDINT32(logp, (afs_int32) 0);
	    ICL_APPENDINT32(logp, (afs_int32) p3);
#endif /* AFS_64BIT_CLIENT */
#endif /* AFSLITTLE_ENDIAN */
	} else if (t3 == ICL_TYPE_FID) {
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p3)[0]);
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p3)[1]);
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p3)[2]);
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p3)[3]);
	}
#if defined(AFS_OSF_ENV) || (defined(AFS_SGI61_ENV) && (_MIPS_SZLONG==64)) || (defined(AFS_AIX51_ENV) && defined(AFS_64BIT_KERNEL))
	else if (t3 == ICL_TYPE_INT32)
	    ICL_APPENDINT32(logp, (afs_int32) p3);
#endif /* AFS_OSF_ENV */
	else
	    ICL_APPENDLONG(logp, p3);
    }
    if (t4) {
	/* marshall parameter 4 now */
	if (t4 == ICL_TYPE_STRING)
	    afs_icl_AppendString(logp, (char *)p4);
	else if (t4 == ICL_TYPE_HYPER) {
	    ICL_APPENDINT32(logp,
			    (afs_int32) ((struct afs_hyper_t *)p4)->high);
	    ICL_APPENDINT32(logp,
			    (afs_int32) ((struct afs_hyper_t *)p4)->low);
	} else if (t4 == ICL_TYPE_INT64) {
#ifndef WORDS_BIGENDIAN
#ifdef AFS_64BIT_CLIENT
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p4)[1]);
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p4)[0]);
#else /* AFS_64BIT_CLIENT */
	    ICL_APPENDINT32(logp, (afs_int32) p4);
	    ICL_APPENDINT32(logp, (afs_int32) 0);
#endif /* AFS_64BIT_CLIENT */
#else /* AFSLITTLE_ENDIAN */
#ifdef AFS_64BIT_CLIENT
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p4)[0]);
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p4)[1]);
#else /* AFS_64BIT_CLIENT */
	    ICL_APPENDINT32(logp, (afs_int32) 0);
	    ICL_APPENDINT32(logp, (afs_int32) p4);
#endif /* AFS_64BIT_CLIENT */
#endif /* AFSLITTLE_ENDIAN */
	} else if (t4 == ICL_TYPE_FID) {
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p4)[0]);
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p4)[1]);
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p4)[2]);
	    ICL_APPENDINT32(logp, (afs_int32) ((afs_int32 *) p4)[3]);
	}
#if defined(AFS_OSF_ENV) || (defined(AFS_SGI61_ENV) && (_MIPS_SZLONG==64)) || (defined(AFS_AIX51_ENV) && defined(AFS_64BIT_KERNEL))
	else if (t4 == ICL_TYPE_INT32)
	    ICL_APPENDINT32(logp, (afs_int32) p4);
#endif /* AFS_OSF_ENV */
	else
	    ICL_APPENDLONG(logp, p4);
    }
    ReleaseWriteLock(&logp->lock);
}

/* create a log with size logSize; return it in *outLogpp and tag
 * it with name "name."
 */
int
afs_icl_CreateLog(char *name, afs_int32 logSize,
		  struct afs_icl_log **outLogpp)
{
    return afs_icl_CreateLogWithFlags(name, logSize, /*flags */ 0, outLogpp);
}

/* create a log with size logSize; return it in *outLogpp and tag
 * it with name "name."  'flags' can be set to make the log unclearable.
 */
int
afs_icl_CreateLogWithFlags(char *name, afs_int32 logSize, afs_uint32 flags,
			   struct afs_icl_log **outLogpp)
{
    register struct afs_icl_log *logp;

    /* add into global list under lock */
    ObtainWriteLock(&afs_icl_lock, 183);
    if (!afs_icl_inited)
	afs_icl_Init();

    for (logp = afs_icl_allLogs; logp; logp = logp->nextp) {
	if (strcmp(logp->name, name) == 0) {
	    /* found it already created, just return it */
	    logp->refCount++;
	    *outLogpp = logp;
	    if (flags & ICL_CRLOG_FLAG_PERSISTENT) {
		ObtainWriteLock(&logp->lock, 184);
		logp->states |= ICL_LOGF_PERSISTENT;
		ReleaseWriteLock(&logp->lock);
	    }
	    ReleaseWriteLock(&afs_icl_lock);
	    return 0;
	}
    }

    logp = (struct afs_icl_log *)
	osi_AllocSmallSpace(sizeof(struct afs_icl_log));
    memset((caddr_t) logp, 0, sizeof(*logp));

    logp->refCount = 1;
    logp->name = osi_AllocSmallSpace(strlen(name) + 1);
    strcpy(logp->name, name);
    LOCK_INIT(&logp->lock, "logp lock");
    logp->logSize = logSize;
    logp->datap = NULL;		/* don't allocate it until we need it */

    if (flags & ICL_CRLOG_FLAG_PERSISTENT)
	logp->states |= ICL_LOGF_PERSISTENT;

    logp->nextp = afs_icl_allLogs;
    afs_icl_allLogs = logp;
    ReleaseWriteLock(&afs_icl_lock);

    *outLogpp = logp;
    return 0;
}

/* called with a log, a pointer to a buffer, the size of the buffer
 * (in *bufSizep), the starting cookie (in *cookiep, use 0 at the start)
 * and returns data in the provided buffer, and returns output flags
 * in *flagsp.  The flag ICL_COPYOUTF_MISSEDSOME is set if we can't
 * find the record with cookie value cookie.
 */
int
afs_icl_CopyOut(register struct afs_icl_log *logp, afs_int32 * bufferp,
		afs_int32 * bufSizep, afs_uint32 * cookiep,
		afs_int32 * flagsp)
{
    afs_int32 nwords;		/* number of words to copy out */
    afs_uint32 startCookie;	/* first cookie to use */
    afs_int32 outWords;		/* words we've copied out */
    afs_int32 inWords;		/* max words to copy out */
    afs_int32 code;		/* return code */
    afs_int32 ix;		/* index we're copying from */
    afs_int32 outFlags;		/* return flags */
    afs_int32 inFlags;		/* flags passed in */
    afs_int32 end;

    inWords = *bufSizep;	/* max to copy out */
    outWords = 0;		/* amount copied out */
    startCookie = *cookiep;
    outFlags = 0;
    inFlags = *flagsp;
    code = 0;

    ObtainWriteLock(&logp->lock, 185);
    if (!logp->datap) {
	ReleaseWriteLock(&logp->lock);
	goto done;
    }

    /* first, compute the index of the start cookie we've been passed */
    while (1) {
	/* (re-)compute where we should start */
	if (startCookie < logp->baseCookie) {
	    if (startCookie)	/* missed some output */
		outFlags |= ICL_COPYOUTF_MISSEDSOME;
	    /* skip to the first available record */
	    startCookie = logp->baseCookie;
	    *cookiep = startCookie;
	}

	/* compute where we find the first element to copy out */
	ix = logp->firstUsed + startCookie - logp->baseCookie;
	if (ix >= logp->logSize)
	    ix -= logp->logSize;

	/* if have some data now, break out and process it */
	if (startCookie - logp->baseCookie < logp->logElements)
	    break;

	/* At end of log, so clear it if we need to */
	if (inFlags & ICL_COPYOUTF_CLRAFTERREAD) {
	    logp->firstUsed = logp->firstFree = 0;
	    logp->logElements = 0;
	}
	/* otherwise, either wait for the data to arrive, or return */
	if (!(inFlags & ICL_COPYOUTF_WAITIO)) {
	    ReleaseWriteLock(&logp->lock);
	    code = 0;
	    goto done;
	}
	logp->states |= ICL_LOGF_WAITING;
	ReleaseWriteLock(&logp->lock);
	afs_osi_Sleep(&logp->lock);
	ObtainWriteLock(&logp->lock, 186);
    }
    /* copy out data from ix to logSize or firstFree, depending
     * upon whether firstUsed <= firstFree (no wrap) or otherwise.
     * be careful not to copy out more than nwords.
     */
    if (ix >= logp->firstUsed) {
	if (logp->firstUsed <= logp->firstFree)
	    /* no wrapping */
	    end = logp->firstFree;	/* first element not to copy */
	else
	    end = logp->logSize;
	nwords = inWords;	/* don't copy more than this */
	if (end - ix < nwords)
	    nwords = end - ix;
	if (nwords > 0) {
	    memcpy((char *)bufferp, (char *)&logp->datap[ix],
		   sizeof(afs_int32) * nwords);
	    outWords += nwords;
	    inWords -= nwords;
	    bufferp += nwords;
	}
	/* if we're going to copy more out below, we'll start here */
	ix = 0;
    }
    /* now, if active part of the log has wrapped, there's more stuff
     * starting at the head of the log.  Copy out more from there.
     */
    if (logp->firstUsed > logp->firstFree && ix < logp->firstFree
	&& inWords > 0) {
	/* (more to) copy out from the wrapped section at the
	 * start of the log.  May get here even if didn't copy any
	 * above, if the cookie points directly into the wrapped section.
	 */
	nwords = inWords;
	if (logp->firstFree - ix < nwords)
	    nwords = logp->firstFree - ix;
	memcpy((char *)bufferp, (char *)&logp->datap[ix],
	       sizeof(afs_int32) * nwords);
	outWords += nwords;
	inWords -= nwords;
	bufferp += nwords;
    }

    ReleaseWriteLock(&logp->lock);

  done:
    if (code == 0) {
	*bufSizep = outWords;
	*flagsp = outFlags;
    }
    return code;
}

/* return basic parameter information about a log */
int
afs_icl_GetLogParms(struct afs_icl_log *logp, afs_int32 * maxSizep,
		    afs_int32 * curSizep)
{
    ObtainReadLock(&logp->lock);
    *maxSizep = logp->logSize;
    *curSizep = logp->logElements;
    ReleaseReadLock(&logp->lock);
    return 0;
}


/* hold and release logs */
int
afs_icl_LogHold(register struct afs_icl_log *logp)
{
    ObtainWriteLock(&afs_icl_lock, 187);
    logp->refCount++;
    ReleaseWriteLock(&afs_icl_lock);
    return 0;
}

/* hold and release logs, called with lock already held */
int
afs_icl_LogHoldNL(register struct afs_icl_log *logp)
{
    logp->refCount++;
    return 0;
}

/* keep track of how many sets believe the log itself is allocated */
int
afs_icl_LogUse(register struct afs_icl_log *logp)
{
    ObtainWriteLock(&logp->lock, 188);
    if (logp->setCount == 0) {
	/* this is the first set actually using the log -- allocate it */
	if (logp->logSize == 0) {
	    /* we weren't passed in a hint and it wasn't set */
	    logp->logSize = ICL_DEFAULT_LOGSIZE;
	}
	logp->datap =
	    (afs_int32 *) afs_osi_Alloc(sizeof(afs_int32) * logp->logSize);
#ifdef	KERNEL_HAVE_PIN
	pin((char *)logp->datap, sizeof(afs_int32) * logp->logSize);
#endif
    }
    logp->setCount++;
    ReleaseWriteLock(&logp->lock);
    return 0;
}

/* decrement the number of real users of the log, free if possible */
int
afs_icl_LogFreeUse(register struct afs_icl_log *logp)
{
    ObtainWriteLock(&logp->lock, 189);
    if (--logp->setCount == 0) {
	/* no more users -- free it (but keep log structure around) */
#ifdef	KERNEL_HAVE_PIN
	unpin((char *)logp->datap, sizeof(afs_int32) * logp->logSize);
#endif
	afs_osi_Free(logp->datap, sizeof(afs_int32) * logp->logSize);
	logp->firstUsed = logp->firstFree = 0;
	logp->logElements = 0;
	logp->datap = NULL;
    }
    ReleaseWriteLock(&logp->lock);
    return 0;
}

/* set the size of the log to 'logSize' */
int
afs_icl_LogSetSize(register struct afs_icl_log *logp, afs_int32 logSize)
{
    ObtainWriteLock(&logp->lock, 190);
    if (!logp->datap) {
	/* nothing to worry about since it's not allocated */
	logp->logSize = logSize;
    } else {
	/* reset log */
	logp->firstUsed = logp->firstFree = 0;
	logp->logElements = 0;

	/* free and allocate a new one */
#ifdef	KERNEL_HAVE_PIN
	unpin((char *)logp->datap, sizeof(afs_int32) * logp->logSize);
#endif
	afs_osi_Free(logp->datap, sizeof(afs_int32) * logp->logSize);
	logp->datap =
	    (afs_int32 *) afs_osi_Alloc(sizeof(afs_int32) * logSize);
#ifdef	KERNEL_HAVE_PIN
	pin((char *)logp->datap, sizeof(afs_int32) * logSize);
#endif
	logp->logSize = logSize;
    }
    ReleaseWriteLock(&logp->lock);

    return 0;
}

/* free a log.  Called with afs_icl_lock locked. */
int
afs_icl_ZapLog(register struct afs_icl_log *logp)
{
    register struct afs_icl_log **lpp, *tp;

    for (lpp = &afs_icl_allLogs, tp = *lpp; tp; lpp = &tp->nextp, tp = *lpp) {
	if (tp == logp) {
	    /* found the dude we want to remove */
	    *lpp = logp->nextp;
	    osi_FreeSmallSpace(logp->name);
#ifdef KERNEL_HAVE_PIN
	    unpin((char *)logp->datap, sizeof(afs_int32) * logp->logSize);
#endif
	    afs_osi_Free(logp->datap, sizeof(afs_int32) * logp->logSize);
	    osi_FreeSmallSpace(logp);
	    break;		/* won't find it twice */
	}
    }
    return 0;
}

/* do the release, watching for deleted entries */
int
afs_icl_LogRele(register struct afs_icl_log *logp)
{
    ObtainWriteLock(&afs_icl_lock, 191);
    if (--logp->refCount == 0 && (logp->states & ICL_LOGF_DELETED)) {
	afs_icl_ZapLog(logp);	/* destroys logp's lock! */
    }
    ReleaseWriteLock(&afs_icl_lock);
    return 0;
}

/* do the release, watching for deleted entries, log already held */
int
afs_icl_LogReleNL(register struct afs_icl_log *logp)
{
    if (--logp->refCount == 0 && (logp->states & ICL_LOGF_DELETED)) {
	afs_icl_ZapLog(logp);	/* destroys logp's lock! */
    }
    return 0;
}

/* zero out the log */
int
afs_icl_ZeroLog(register struct afs_icl_log *logp)
{
    ObtainWriteLock(&logp->lock, 192);
    logp->firstUsed = logp->firstFree = 0;
    logp->logElements = 0;
    logp->baseCookie = 0;
    ReleaseWriteLock(&logp->lock);
    return 0;
}

/* free a log entry, and drop its reference count */
int
afs_icl_LogFree(register struct afs_icl_log *logp)
{
    ObtainWriteLock(&logp->lock, 193);
    logp->states |= ICL_LOGF_DELETED;
    ReleaseWriteLock(&logp->lock);
    afs_icl_LogRele(logp);
    return 0;
}

/* find a log by name, returning it held */
struct afs_icl_log *
afs_icl_FindLog(char *name)
{
    register struct afs_icl_log *tp;
    ObtainWriteLock(&afs_icl_lock, 194);
    for (tp = afs_icl_allLogs; tp; tp = tp->nextp) {
	if (strcmp(tp->name, name) == 0) {
	    /* this is the dude we want */
	    tp->refCount++;
	    break;
	}
    }
    ReleaseWriteLock(&afs_icl_lock);
    return tp;
}

int
afs_icl_EnumerateLogs(int (*aproc)
		        (char *name, char *arock, struct afs_icl_log * tp),
		      char *arock)
{
    register struct afs_icl_log *tp;
    register afs_int32 code;

    code = 0;
    ObtainWriteLock(&afs_icl_lock, 195);
    for (tp = afs_icl_allLogs; tp; tp = tp->nextp) {
	tp->refCount++;		/* hold this guy */
	ReleaseWriteLock(&afs_icl_lock);
	ObtainReadLock(&tp->lock);
	code = (*aproc) (tp->name, arock, tp);
	ReleaseReadLock(&tp->lock);
	ObtainWriteLock(&afs_icl_lock, 196);
	if (--tp->refCount == 0)
	    afs_icl_ZapLog(tp);
	if (code)
	    break;
    }
    ReleaseWriteLock(&afs_icl_lock);
    return code;
}

struct afs_icl_set *afs_icl_allSets = 0;

int
afs_icl_CreateSet(char *name, struct afs_icl_log *baseLogp,
		  struct afs_icl_log *fatalLogp,
		  struct afs_icl_set **outSetpp)
{
    return afs_icl_CreateSetWithFlags(name, baseLogp, fatalLogp,
				      /*flags */ 0, outSetpp);
}

/* create a set, given pointers to base and fatal logs, if any.
 * Logs are unlocked, but referenced, and *outSetpp is returned
 * referenced.  Function bumps reference count on logs, since it
 * addds references from the new afs_icl_set.  When the set is destroyed,
 * those references will be released.
 */
int
afs_icl_CreateSetWithFlags(char *name, struct afs_icl_log *baseLogp,
			   struct afs_icl_log *fatalLogp, afs_uint32 flags,
			   struct afs_icl_set **outSetpp)
{
    register struct afs_icl_set *setp;
    register int i;
    afs_int32 states = ICL_DEFAULT_SET_STATES;

    ObtainWriteLock(&afs_icl_lock, 197);
    if (!afs_icl_inited)
	afs_icl_Init();

    for (setp = afs_icl_allSets; setp; setp = setp->nextp) {
	if (strcmp(setp->name, name) == 0) {
	    setp->refCount++;
	    *outSetpp = setp;
	    if (flags & ICL_CRSET_FLAG_PERSISTENT) {
		ObtainWriteLock(&setp->lock, 198);
		setp->states |= ICL_SETF_PERSISTENT;
		ReleaseWriteLock(&setp->lock);
	    }
	    ReleaseWriteLock(&afs_icl_lock);
	    return 0;
	}
    }

    /* determine initial state */
    if (flags & ICL_CRSET_FLAG_DEFAULT_ON)
	states = ICL_SETF_ACTIVE;
    else if (flags & ICL_CRSET_FLAG_DEFAULT_OFF)
	states = ICL_SETF_FREED;
    if (flags & ICL_CRSET_FLAG_PERSISTENT)
	states |= ICL_SETF_PERSISTENT;

    setp = (struct afs_icl_set *)afs_osi_Alloc(sizeof(struct afs_icl_set));
    memset((caddr_t) setp, 0, sizeof(*setp));
    setp->refCount = 1;
    if (states & ICL_SETF_FREED)
	states &= ~ICL_SETF_ACTIVE;	/* if freed, can't be active */
    setp->states = states;

    LOCK_INIT(&setp->lock, "setp lock");
    /* next lock is obtained in wrong order, hierarchy-wise, but
     * it doesn't matter, since no one can find this lock yet, since
     * the afs_icl_lock is still held, and thus the obtain can't block.
     */
    ObtainWriteLock(&setp->lock, 199);
    setp->name = osi_AllocSmallSpace(strlen(name) + 1);
    strcpy(setp->name, name);
    setp->nevents = ICL_DEFAULTEVENTS;
    setp->eventFlags = afs_osi_Alloc(ICL_DEFAULTEVENTS);
#ifdef	KERNEL_HAVE_PIN
    pin((char *)setp->eventFlags, ICL_DEFAULTEVENTS);
#endif
    for (i = 0; i < ICL_DEFAULTEVENTS; i++)
	setp->eventFlags[i] = 0xff;	/* default to enabled */

    /* update this global info under the afs_icl_lock */
    setp->nextp = afs_icl_allSets;
    afs_icl_allSets = setp;
    ReleaseWriteLock(&afs_icl_lock);

    /* set's basic lock is still held, so we can finish init */
    if (baseLogp) {
	setp->logs[0] = baseLogp;
	afs_icl_LogHold(baseLogp);
	if (!(setp->states & ICL_SETF_FREED))
	    afs_icl_LogUse(baseLogp);	/* log is actually being used */
    }
    if (fatalLogp) {
	setp->logs[1] = fatalLogp;
	afs_icl_LogHold(fatalLogp);
	if (!(setp->states & ICL_SETF_FREED))
	    afs_icl_LogUse(fatalLogp);	/* log is actually being used */
    }
    ReleaseWriteLock(&setp->lock);

    *outSetpp = setp;
    return 0;
}

/* function to change event enabling information for a particular set */
int
afs_icl_SetEnable(struct afs_icl_set *setp, afs_int32 eventID, int setValue)
{
    char *tp;

    ObtainWriteLock(&setp->lock, 200);
    if (!ICL_EVENTOK(setp, eventID)) {
	ReleaseWriteLock(&setp->lock);
	return -1;
    }
    tp = &setp->eventFlags[ICL_EVENTBYTE(eventID)];
    if (setValue)
	*tp |= ICL_EVENTMASK(eventID);
    else
	*tp &= ~(ICL_EVENTMASK(eventID));
    ReleaseWriteLock(&setp->lock);
    return 0;
}

/* return indication of whether a particular event ID is enabled
 * for tracing.  If *getValuep is set to 0, the event is disabled,
 * otherwise it is enabled.  All events start out enabled by default.
 */
int
afs_icl_GetEnable(struct afs_icl_set *setp, afs_int32 eventID, int *getValuep)
{
    ObtainReadLock(&setp->lock);
    if (!ICL_EVENTOK(setp, eventID)) {
	ReleaseWriteLock(&setp->lock);
	return -1;
    }
    if (setp->eventFlags[ICL_EVENTBYTE(eventID)] & ICL_EVENTMASK(eventID))
	*getValuep = 1;
    else
	*getValuep = 0;
    ReleaseReadLock(&setp->lock);
    return 0;
}

/* hold and release event sets */
int
afs_icl_SetHold(register struct afs_icl_set *setp)
{
    ObtainWriteLock(&afs_icl_lock, 201);
    setp->refCount++;
    ReleaseWriteLock(&afs_icl_lock);
    return 0;
}

/* free a set.  Called with afs_icl_lock locked */
int
afs_icl_ZapSet(register struct afs_icl_set *setp)
{
    register struct afs_icl_set **lpp, *tp;
    int i;
    register struct afs_icl_log *tlp;

    for (lpp = &afs_icl_allSets, tp = *lpp; tp; lpp = &tp->nextp, tp = *lpp) {
	if (tp == setp) {
	    /* found the dude we want to remove */
	    *lpp = setp->nextp;
	    osi_FreeSmallSpace(setp->name);
#ifdef	KERNEL_HAVE_PIN
	    unpin((char *)setp->eventFlags, ICL_DEFAULTEVENTS);
#endif
	    afs_osi_Free(setp->eventFlags, ICL_DEFAULTEVENTS);
	    for (i = 0; i < ICL_LOGSPERSET; i++) {
		if ((tlp = setp->logs[i]))
		    afs_icl_LogReleNL(tlp);
	    }
	    osi_FreeSmallSpace(setp);
	    break;		/* won't find it twice */
	}
    }
    return 0;
}

/* do the release, watching for deleted entries */
int
afs_icl_SetRele(register struct afs_icl_set *setp)
{
    ObtainWriteLock(&afs_icl_lock, 202);
    if (--setp->refCount == 0 && (setp->states & ICL_SETF_DELETED)) {
	afs_icl_ZapSet(setp);	/* destroys setp's lock! */
    }
    ReleaseWriteLock(&afs_icl_lock);
    return 0;
}

/* free a set entry, dropping its reference count */
int
afs_icl_SetFree(register struct afs_icl_set *setp)
{
    ObtainWriteLock(&setp->lock, 203);
    setp->states |= ICL_SETF_DELETED;
    ReleaseWriteLock(&setp->lock);
    afs_icl_SetRele(setp);
    return 0;
}

/* find a set by name, returning it held */
struct afs_icl_set *
afs_icl_FindSet(char *name)
{
    register struct afs_icl_set *tp;
    ObtainWriteLock(&afs_icl_lock, 204);
    for (tp = afs_icl_allSets; tp; tp = tp->nextp) {
	if (strcmp(tp->name, name) == 0) {
	    /* this is the dude we want */
	    tp->refCount++;
	    break;
	}
    }
    ReleaseWriteLock(&afs_icl_lock);
    return tp;
}

/* zero out all the logs in the set */
int
afs_icl_ZeroSet(struct afs_icl_set *setp)
{
    register int i;
    int code = 0;
    int tcode;
    struct afs_icl_log *logp;

    ObtainReadLock(&setp->lock);
    for (i = 0; i < ICL_LOGSPERSET; i++) {
	logp = setp->logs[i];
	if (logp) {
	    afs_icl_LogHold(logp);
	    tcode = afs_icl_ZeroLog(logp);
	    if (tcode != 0)
		code = tcode;	/* save the last bad one */
	    afs_icl_LogRele(logp);
	}
    }
    ReleaseReadLock(&setp->lock);
    return code;
}

int
afs_icl_EnumerateSets(int (*aproc)
		        (char *name, char *arock, struct afs_icl_log * tp),
		      char *arock)
{
    register struct afs_icl_set *tp, *np;
    register afs_int32 code;

    code = 0;
    ObtainWriteLock(&afs_icl_lock, 205);
    for (tp = afs_icl_allSets; tp; tp = np) {
	tp->refCount++;		/* hold this guy */
	ReleaseWriteLock(&afs_icl_lock);
	code = (*aproc) (tp->name, arock, (struct afs_icl_log *)tp);
	ObtainWriteLock(&afs_icl_lock, 206);
	np = tp->nextp;		/* tp may disappear next, but not np */
	if (--tp->refCount == 0 && (tp->states & ICL_SETF_DELETED))
	    afs_icl_ZapSet(tp);
	if (code)
	    break;
    }
    ReleaseWriteLock(&afs_icl_lock);
    return code;
}

int
afs_icl_AddLogToSet(struct afs_icl_set *setp, struct afs_icl_log *newlogp)
{
    register int i;
    int code = -1;

    ObtainWriteLock(&setp->lock, 207);
    for (i = 0; i < ICL_LOGSPERSET; i++) {
	if (!setp->logs[i]) {
	    setp->logs[i] = newlogp;
	    code = i;
	    afs_icl_LogHold(newlogp);
	    if (!(setp->states & ICL_SETF_FREED)) {
		/* bump up the number of sets using the log */
		afs_icl_LogUse(newlogp);
	    }
	    break;
	}
    }
    ReleaseWriteLock(&setp->lock);
    return code;
}

int
afs_icl_SetSetStat(struct afs_icl_set *setp, int op)
{
    int i;
    afs_int32 code;
    struct afs_icl_log *logp;

    ObtainWriteLock(&setp->lock, 208);
    switch (op) {
    case ICL_OP_SS_ACTIVATE:	/* activate a log */
	/*
	 * If we are not already active, see if we have released
	 * our demand that the log be allocated (FREED set).  If
	 * we have, reassert our desire.
	 */
	if (!(setp->states & ICL_SETF_ACTIVE)) {
	    if (setp->states & ICL_SETF_FREED) {
		/* have to reassert desire for logs */
		for (i = 0; i < ICL_LOGSPERSET; i++) {
		    logp = setp->logs[i];
		    if (logp) {
			afs_icl_LogHold(logp);
			afs_icl_LogUse(logp);
			afs_icl_LogRele(logp);
		    }
		}
		setp->states &= ~ICL_SETF_FREED;
	    }
	    setp->states |= ICL_SETF_ACTIVE;
	}
	code = 0;
	break;

    case ICL_OP_SS_DEACTIVATE:	/* deactivate a log */
	/* this doesn't require anything beyond clearing the ACTIVE flag */
	setp->states &= ~ICL_SETF_ACTIVE;
	code = 0;
	break;

    case ICL_OP_SS_FREE:	/* deassert design for log */
	/* 
	 * if we are already in this state, do nothing; otherwise
	 * deassert desire for log
	 */
	if (setp->states & ICL_SETF_ACTIVE)
	    code = EINVAL;
	else {
	    if (!(setp->states & ICL_SETF_FREED)) {
		for (i = 0; i < ICL_LOGSPERSET; i++) {
		    logp = setp->logs[i];
		    if (logp) {
			afs_icl_LogHold(logp);
			afs_icl_LogFreeUse(logp);
			afs_icl_LogRele(logp);
		    }
		}
		setp->states |= ICL_SETF_FREED;
	    }
	    code = 0;
	}
	break;

    default:
	code = EINVAL;
    }
    ReleaseWriteLock(&setp->lock);
    return code;
}
