Add NEWS entry for recent ubik changes

[pkg-k5-afs_openafs.git] / src / afsd / afsd.c

/*
 * 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
 */

/*
  *         Information Technology Center
  *         October 1987
  *
  * Description:
  *     The Andrew File System startup process.  It is responsible for
  * reading and parsing the various configuration files, starting up
  * the kernel processes required by AFS and feeding the configuration
  * information to the kernel.
  *
  * Recognized flags are:
  *     -blocks     The number of blocks available in the workstation cache.
  *     -files      The target number of files in the workstation cache (Default:
  *                 1000).
  *     -rootvol    The name of the root volume to use.
  *     -stat       The number of stat cache entries.
  *     -hosts      [OBSOLETE] List of servers to check for volume location info FOR THE
  *                 HOME CELL.
  *     -memcache   Use an in-memory cache rather than disk.
  *     -cachedir   The base directory for the workstation cache.
  *     -mountdir   The directory on which the AFS is to be mounted.
  *     -confdir    The configuration directory.
  *     -nosettime  Don't keep checking the time to avoid drift (default).
  *     -settime    [IGNORED] Keep checking the time to avoid drift.
  *     -rxmaxmtu   Set the max mtu to help with VPN issues.
  *     -verbose    Be chatty.
  *     -disable-dynamic-vcaches     Disable the use of -stat value as the starting size of
  *                          the size of the vcache/stat cache pool,
  *                          but increase that pool dynamically as needed.
  *     -debug     Print out additional debugging info.
  *     -kerndev    [OBSOLETE] The kernel device for AFS.
  *     -dontfork   [OBSOLETE] Don't fork off as a new process.
  *     -daemons   The number of background daemons to start (Default: 2).
  *     -rmtsys    Also fires up an afs remote sys call (e.g. pioctl, setpag)
  *                support daemon
  *     -chunksize [n]   2^n is the chunksize to be used.  0 is default.
  *     -dcache    The number of data cache entries.
  *     -volumes    The number of volume entries.
  *     -biods     Number of bkg I/O daemons (AIX3.1 only)
  *     -prealloc  Number of preallocated "small" memory blocks
  *     -logfile    [IGNORED] Place where to put the logfile (default in
  *                <cache>/etc/AFSLog.
  *     -waitclose make close calls always synchronous (slows em down, tho)
  *     -files_per_subdir [n]   number of files per cache subdir. (def=2048)
  *     -shutdown  Shutdown afs daemons
  *     -enable_peer_stats      Collect RPC statistics by peer.
  *     -enable_process_stats   Collect RPC statistics for this process.
  *     -mem_alloc_sleep [IGNORED] Sleep when allocating memory.
  *     -afsdb      Enable AFSDB support.
  *     -dynroot        Enable dynroot support.
  *     -dynroot-sparse Enable dynroot support with minimal cell list.
  *     -fakestat       Enable fake stat() for cross-cell mounts.
  *     -fakestat-all   Enable fake stat() for all mounts.
  *     -nomount    Do not mount /afs.
  *     -backuptree Prefer backup volumes for mountpoints in backup volumes.
  *     -rxbind     Bind the rx socket.
  *     -rxpck      Value for rx_extraPackets.
  *     -splitcache RW/RO ratio for cache.
  *     -rxmaxfrags Max number of UDP fragments per rx packet.
  *     -inumcalc  inode number calculation method; 0=compat, 1=MD5 digest
  *     -volume-ttl vldb cache timeout in seconds
  *---------------------------------------------------------------------------*/

#include <afsconfig.h>
#include <afs/param.h>
/* darwin dirent.h doesn't give us the prototypes we want if KERNEL is
 * defined, and roken includes dirent */
#if defined(UKERNEL) && defined(AFS_USR_DARWIN_ENV)
# undef KERNEL
# include <roken.h>
# define KERNEL
#else
# include <roken.h>
#endif

#define VFS 1

#include <afs/stds.h>
#include <afs/opr.h>
#include <afs/opr_assert.h>

#include <afs/cmd.h>

#include "afsd.h"

#include <afs/afsutil.h>

#include <sys/file.h>
#include <sys/wait.h>
#include <hcrypto/rand.h>

/* darwin dirent.h doesn't give us the prototypes we want if KERNEL is
 * defined */
#if defined(UKERNEL) && defined(AFS_USR_DARWIN_ENV)
# undef KERNEL
# include <dirent.h>
# define KERNEL
#else
# include <dirent.h>
#endif

#ifdef HAVE_SYS_FS_TYPES_H
#include <sys/fs_types.h>
#endif

#if defined(HAVE_SYS_MOUNT_H) && !defined(AFS_ARM_DARWIN_ENV)
#include <sys/mount.h>
#endif

#ifdef HAVE_SYS_FCNTL_H
#include <sys/fcntl.h>
#endif

#ifdef HAVE_SYS_MNTTAB_H
#include <sys/mnttab.h>
#endif

#ifdef HAVE_SYS_MNTENT_H
#include <sys/mntent.h>
#endif

#ifdef HAVE_MNTENT_H
#include <mntent.h>
#endif

#ifdef HAVE_SYS_VFS_H
#include <sys/vfs.h>
#endif

#ifdef HAVE_SYS_FSTYP_H
#include <sys/fstyp.h>
#endif

#include <ctype.h>

#include <afs/afs_args.h>
#include <afs/cellconfig.h>
#include <afs/afssyscalls.h>
#include <afs/afsutil.h>
#include <afs/sys_prototypes.h>

#if defined(AFS_SGI62_ENV) && !defined(AFS_SGI65_ENV)
#include <sym.h>
#include <symconst.h>
#endif
#ifdef AFS_SGI65_ENV
#include <sched.h>
#endif

#ifdef AFS_DARWIN_ENV
#ifdef AFS_DARWIN80_ENV
#include <sys/xattr.h>
#endif
#include <CoreFoundation/CoreFoundation.h>

static int event_pid;
#ifndef AFS_ARM_DARWIN_ENV
#define MACOS_EVENT_HANDLING 1
#endif
#endif /* AFS_DARWIN_ENV */

#if AFS_HAVE_STATVFS || defined(HAVE_SYS_STATVFS_H)
#include <sys/statvfs.h>
#else
#if defined(AFS_SUN_ENV)
#include <sys/vfs.h>
#else
#ifdef HAVE_SYS_STATFS_H
#include <sys/statfs.h>
#endif
#endif
#endif

#undef  VIRTUE
#undef  VICE


#define CACHEINFOFILE   "cacheinfo"
#define DCACHEFILE      "CacheItems"
#define VOLINFOFILE     "VolumeItems"
#define CELLINFOFILE    "CellItems"

#define MAXIPADDRS 1024

char LclCellName[64];

#define MAX_CACHE_LOOPS 4


/*
 * Internet address (old style... should be updated).  This was pulled out of the old 4.2
 * version of <netinet/in.h>, since it's still useful.
 */
struct in_addr_42 {
    union {
        struct {
            u_char s_b1, s_b2, s_b3, s_b4;
        } S_un_b;
        struct {
            u_short s_w1, s_w2;
        } S_un_w;
        afs_uint32 S_addr;
    } S_un;
};

#define mPrintIPAddr(ipaddr)  printf("[%d.%d.%d.%d] ",          \
      ((struct in_addr_42 *) &(ipaddr))->S_un.S_un_b.s_b1,      \
      ((struct in_addr_42 *) &(ipaddr))->S_un.S_un_b.s_b2,      \
      ((struct in_addr_42 *) &(ipaddr))->S_un.S_un_b.s_b3,      \
      ((struct in_addr_42 *) &(ipaddr))->S_un.S_un_b.s_b4)

/*
 * Global configuration variables.
 */
static int enable_rxbind = 0;
static int afs_shutdown = 0;
static int cacheBlocks;         /*Num blocks in the cache */
static int cacheFiles;          /*Optimal # of files in workstation cache */
static int rwpct = 0;
static int ropct = 0;
static int cacheStatEntries;    /*Number of stat cache entries */
static char *cacheBaseDir;      /*Where the workstation AFS cache lives */
static char *confDir;           /*Where the workstation AFS configuration lives */
static char fullpn_DCacheFile[1024];    /*Full pathname of DCACHEFILE */
static char fullpn_VolInfoFile[1024];   /*Full pathname of VOLINFOFILE */
static char fullpn_CellInfoFile[1024];  /*Full pathanem of CELLINFOFILE */
static char fullpn_CacheInfo[1024];     /*Full pathname of CACHEINFO */
static char fullpn_VFile[1024]; /*Full pathname of data cache files */
static char *vFilePtr;                  /*Ptr to the number part of above pathname */
static int sawCacheMountDir = 0;        /* from cmd line */
static int sawCacheBaseDir = 0;
static int sawCacheBlocks = 0;
static int sawDCacheSize = 0;
#ifdef AFS_AIX32_ENV
static int sawBiod = 0;
#endif
static int sawCacheStatEntries = 0;
char *afsd_cacheMountDir;
static char *rootVolume = NULL;
#ifdef AFS_XBSD_ENV
static int createAndTrunc = O_RDWR | O_CREAT | O_TRUNC; /*Create & truncate on open */
#else
static int createAndTrunc = O_CREAT | O_TRUNC;  /*Create & truncate on open */
#endif
static int ownerRWmode = 0600;          /*Read/write OK by owner */
static int filesSet = 0;        /*True if number of files explicitly set */
static int nFilesPerDir = 2048; /* # files per cache dir */
#if defined(AFS_CACHE_BYPASS)
#define AFSD_NDAEMONS 4
#else
#define AFSD_NDAEMONS 2
#endif
static int nDaemons = AFSD_NDAEMONS;    /* Number of background daemons */
static int chunkSize = 0;       /* 2^chunkSize bytes per chunk */
static int dCacheSize;          /* # of dcache entries */
static int vCacheSize = 200;    /* # of volume cache entries */
static int rootVolSet = 0;      /*True if root volume name explicitly set */
int addrNum;                    /*Cell server address index being printed */
static int cacheFlags = 0;      /*Flags to cache manager */
#ifdef AFS_AIX32_ENV
static int nBiods = 5;          /* AIX3.1 only */
#endif
static int preallocs = 400;     /* Def # of allocated memory blocks */
static int enable_peer_stats = 0;       /* enable rx stats */
static int enable_process_stats = 0;    /* enable rx stats */
static int enable_afsdb = 0;    /* enable AFSDB support */
static int enable_dynroot = 0;  /* enable dynroot support */
static int enable_fakestat = 0; /* enable fakestat support */
static int enable_backuptree = 0;       /* enable backup tree support */
static int enable_nomount = 0;  /* do not mount */
static int enable_splitcache = 0;
static char *inumcalc = NULL;        /* inode number calculation method */
static int afsd_dynamic_vcaches = 0;    /* Enable dynamic-vcache support */
int afsd_verbose = 0;           /*Are we being chatty? */
int afsd_debug = 0;             /*Are we printing debugging info? */
static int afsd_CloseSynch = 0; /*Are closes synchronous or not? */
static int rxmaxmtu = 0;       /* Are we forcing a limit on the mtu? */
static int rxmaxfrags = 0;      /* Are we forcing a limit on frags? */
static int volume_ttl = 0;      /* enable vldb cache timeout support */

#ifdef AFS_SGI62_ENV
#define AFSD_INO_T ino64_t
#else
#define AFSD_INO_T afs_uint32
#endif
struct afsd_file_list {
    int fileNum;
    struct afsd_file_list *next;
};
struct afsd_file_list **cache_dir_filelist = NULL;
int *cache_dir_list = NULL;     /* Array of cache subdirs */
int *dir_for_V = NULL;          /* Array: dir of each cache file.
                                 * -1: file does not exist
                                 * -2: file exists in top-level
                                 * >=0: file exists in Dxxx
                                 */
#if !defined(AFS_CACHE_VNODE_PATH) && !defined(AFS_LINUX26_ENV)
AFSD_INO_T *inode_for_V;        /* Array of inodes for desired
                                 * cache files */
#endif
int missing_DCacheFile = 1;     /*Is the DCACHEFILE missing? */
int missing_VolInfoFile = 1;    /*Is the VOLINFOFILE missing? */
int missing_CellInfoFile = 1;   /*Is the CELLINFOFILE missing? */
int afsd_rmtsys = 0;            /* Default: don't support rmtsys */
struct afs_cacheParams cparams; /* params passed to cache manager */

int PartSizeOverflow(char *path, int cs);

static int afsd_syscall(int code, ...);

#if defined(AFS_SUN510_ENV) && defined(RXK_LISTENER_ENV)
static void fork_rx_syscall_wait(const char *rn, int syscall, ...);
#endif
static void fork_rx_syscall(const char *rn, int syscall, ...);
static void fork_syscall(const char *rn, int syscall, ...);

enum optionsList {
    OPT_blocks,
    OPT_files,
    OPT_rootvol,
    OPT_stat,
    OPT_memcache,
    OPT_cachedir,
    OPT_mountdir,
    OPT_daemons,
    OPT_nosettime,
    OPT_verbose,
    OPT_rmtsys,
    OPT_debug,
    OPT_chunksize,
    OPT_dcache,
    OPT_volumes,
    OPT_biods,
    OPT_prealloc,
    OPT_confdir,
    OPT_logfile,
    OPT_waitclose,
    OPT_shutdown,
    OPT_peerstats,
    OPT_processstats,
    OPT_memallocsleep,
    OPT_afsdb,
    OPT_filesdir,
    OPT_dynroot,
    OPT_fakestat,
    OPT_fakestatall,
    OPT_nomount,
    OPT_backuptree,
    OPT_rxbind,
    OPT_settime,
    OPT_rxpck,
    OPT_splitcache,
    OPT_nodynvcache,
    OPT_rxmaxmtu,
    OPT_dynrootsparse,
    OPT_rxmaxfrags,
    OPT_inumcalc,
    OPT_volume_ttl,
};

#ifdef MACOS_EVENT_HANDLING
#include <SystemConfiguration/SystemConfiguration.h>
#include <SystemConfiguration/SCDynamicStore.h>

#include <IOKit/pwr_mgt/IOPMLib.h>
#include <IOKit/IOMessage.h>

static io_connect_t root_port;
static IONotificationPortRef notify;
static io_object_t iterator;
static CFRunLoopSourceRef source;

static void
afsd_sleep_callback(void * refCon, io_service_t service,
                    natural_t messageType, void * messageArgument )
{
    switch (messageType) {
    case kIOMessageCanSystemSleep:
        /* Idle sleep is about to kick in; can
           prevent sleep by calling IOCancelPowerChange, otherwise
           if we don't ack in 30s the system sleeps anyway */

        /* allow it */
        IOAllowPowerChange(root_port, (long)messageArgument);
        break;

    case kIOMessageSystemWillSleep:
        /* The system WILL go to sleep. Ack or suffer delay */

        IOAllowPowerChange(root_port, (long)messageArgument);
        break;

    case kIOMessageSystemWillRestart:
        /* The system WILL restart. Ack or suffer delay */

        IOAllowPowerChange(root_port, (long)messageArgument);
        break;

    case kIOMessageSystemWillPowerOn:
    case kIOMessageSystemHasPoweredOn:
        /* coming back from sleep */

        IOAllowPowerChange(root_port, (long)messageArgument);
        break;

    default:
        IOAllowPowerChange(root_port, (long)messageArgument);
        break;
    }
}

static void
afsd_update_addresses(CFRunLoopTimerRef timer, void *info)
{
    /* parse multihomed address files */
    afs_uint32 addrbuf[MAXIPADDRS], maskbuf[MAXIPADDRS],
        mtubuf[MAXIPADDRS];
    char reason[1024];
    int code;

    code = afsconf_ParseNetFiles(addrbuf, maskbuf, mtubuf, MAXIPADDRS,
                                 reason, AFSDIR_CLIENT_NETINFO_FILEPATH,
                                 AFSDIR_CLIENT_NETRESTRICT_FILEPATH);

    if (code > 0) {
        /* Note we're refreshing */
        code = code | 0x40000000;
        afsd_syscall(AFSOP_ADVISEADDR, code, addrbuf, maskbuf, mtubuf);
    } else
        printf("ADVISEADDR: Error in specifying interface addresses:%s\n",
               reason);

    /* Since it's likely this means our DNS server changed, reinit now */
    if (enable_afsdb)
        res_init();
}

/* This function is called when the system's ip addresses may have changed. */
static void
afsd_ipaddr_callback (SCDynamicStoreRef store, CFArrayRef changed_keys, void *info)
{
      CFRunLoopTimerRef timer;

      timer = CFRunLoopTimerCreate (NULL, CFAbsoluteTimeGetCurrent () + 1.0,
                                    0.0, 0, 0, afsd_update_addresses, NULL);
      CFRunLoopAddTimer (CFRunLoopGetCurrent (), timer,
                         kCFRunLoopDefaultMode);
      CFRelease (timer);
}

static void
afsd_event_cleanup(int signo) {

    CFRunLoopRemoveSource(CFRunLoopGetCurrent(), source, kCFRunLoopDefaultMode);
    CFRelease (source);
    IODeregisterForSystemPower(&iterator);
    IOServiceClose(root_port);
    IONotificationPortDestroy(notify);
    exit(0);
}

/* Adapted from "Living in a Dynamic TCP/IP Environment" technote. */
static void
afsd_install_events(void)
{
    SCDynamicStoreContext ctx = {0};
    SCDynamicStoreRef store;

    root_port = IORegisterForSystemPower(0,&notify,afsd_sleep_callback,&iterator);

    if (root_port) {
        CFRunLoopAddSource(CFRunLoopGetCurrent(),
                           IONotificationPortGetRunLoopSource(notify),
                           kCFRunLoopDefaultMode);
    }


    store = SCDynamicStoreCreate (NULL,
                                  CFSTR ("AddIPAddressListChangeCallbackSCF"),
                                  afsd_ipaddr_callback, &ctx);

    if (store) {
        const void *keys[1];

        /* Request IPV4 address change notification */
        keys[0] = (SCDynamicStoreKeyCreateNetworkServiceEntity
                   (NULL, kSCDynamicStoreDomainState,
                    kSCCompAnyRegex, kSCEntNetIPv4));

#if 0
        /* This should tell us when the hostname(s) change. do we care? */
        keys[N] = SCDynamicStoreKeyCreateHostNames (NULL);
#endif

        if (keys[0] != NULL) {
            CFArrayRef pattern_array;

            pattern_array = CFArrayCreate (NULL, keys, 1,
                                           &kCFTypeArrayCallBacks);

            if (pattern_array != NULL)
            {
                SCDynamicStoreSetNotificationKeys (store, NULL, pattern_array);
                source = SCDynamicStoreCreateRunLoopSource (NULL, store, 0);

                CFRelease (pattern_array);
            }

            if (keys[0] != NULL)
                CFRelease (keys[0]);
        }

        CFRelease (store);
    }

    if (source != NULL) {
        CFRunLoopAddSource (CFRunLoopGetCurrent(),
                            source, kCFRunLoopDefaultMode);
    }

    signal(SIGTERM, afsd_event_cleanup);

    CFRunLoopRun();
}
#endif

/* ParseArgs is now obsolete, being handled by cmd */

/*------------------------------------------------------------------------------
  * ParseCacheInfoFile
  *
  * Description:
  *     Open the file containing the description of the workstation's AFS cache
  *     and pull out its contents.  The format of this file is as follows:
  *
  *         cacheMountDir:cacheBaseDir:cacheBlocks
  *
  * Arguments:
  *     None.
  *
  * Returns:
  *     0 if everything went well,
  *     1 otherwise.
  *
  * Environment:
  *     Nothing interesting.
  *
  *  Side Effects:
  *     Sets globals.
  *---------------------------------------------------------------------------*/

int
ParseCacheInfoFile(void)
{
    static char rn[] = "ParseCacheInfoFile";    /*This routine's name */
    FILE *cachefd;              /*Descriptor for cache info file */
    int parseResult;            /*Result of our fscanf() */
    int tCacheBlocks;
    char tCacheBaseDir[1024], *tbd, tCacheMountDir[1024], *tmd;

    if (afsd_debug)
        printf("%s: Opening cache info file '%s'...\n", rn, fullpn_CacheInfo);

    cachefd = fopen(fullpn_CacheInfo, "r");
    if (!cachefd) {
        printf("%s: Can't read cache info file '%s'\n", rn, fullpn_CacheInfo);
        return (1);
    }

    /*
     * Parse the contents of the cache info file.  All chars up to the first
     * colon are the AFS mount directory, all chars to the next colon are the
     * full path name of the workstation cache directory and all remaining chars
     * represent the number of blocks in the cache.
     */
    tCacheMountDir[0] = tCacheBaseDir[0] = '\0';
    parseResult =
        fscanf(cachefd, "%1024[^:]:%1024[^:]:%d", tCacheMountDir,
               tCacheBaseDir, &tCacheBlocks);

    /*
     * Regardless of how the parse went, we close the cache info file.
     */
    fclose(cachefd);

    if (parseResult == EOF || parseResult < 3) {
        printf("%s: Format error in cache info file!\n", rn);
        if (parseResult == EOF)
            printf("\tEOF encountered before any field parsed.\n");
        else
            printf("\t%d out of 3 fields successfully parsed.\n",
                   parseResult);

        return (1);
    }

    for (tmd = tCacheMountDir; *tmd == '\n' || *tmd == ' ' || *tmd == '\t';
         tmd++);
    for (tbd = tCacheBaseDir; *tbd == '\n' || *tbd == ' ' || *tbd == '\t';
         tbd++);
    /* now copy in the fields not explicitly overridden by cmd args */
    if (!sawCacheMountDir)
        afsd_cacheMountDir = strdup(tmd);
    if (!sawCacheBaseDir)
        cacheBaseDir = strdup(tbd);
    if (!sawCacheBlocks)
        cacheBlocks = tCacheBlocks;

    if (afsd_debug) {
        printf("%s: Cache info file successfully parsed:\n", rn);
        printf
            ("\tcacheMountDir: '%s'\n\tcacheBaseDir: '%s'\n\tcacheBlocks: %d\n",
             tmd, tbd, tCacheBlocks);
    }
    if (!(cacheFlags & AFSCALL_INIT_MEMCACHE)) {
        return (PartSizeOverflow(tbd, cacheBlocks));
    }

    return (0);
}

/*
 * All failures to open the partition are ignored. Also if the cache dir
 * isn't a mounted partition it's also ignored since we can't guarantee
 * what will be stored afterwards. Too many if's. This is now purely
 * advisory. ODS with over 2G partition also gives warning message.
 *
 * Returns:
 *      0 if everything went well,
 *      1 otherwise.
 */
int
PartSizeOverflow(char *path, int cs)
{
  int bsize = -1;
  afs_int64 totalblks, mint;
#if AFS_HAVE_STATVFS || defined(HAVE_SYS_STATVFS_H)
    struct statvfs statbuf;

    if (statvfs(path, &statbuf) != 0) {
        if (afsd_debug)
            printf
                ("statvfs failed on %s; skip checking for adequate partition space\n",
                 path);
        return 0;
    }
    totalblks = statbuf.f_blocks;
    bsize = statbuf.f_frsize;
#if AFS_AIX51_ENV
    if (strcmp(statbuf.f_basetype, "jfs")) {
        fprintf(stderr, "Cache filesystem '%s' must be jfs (now %s)\n",
                path, statbuf.f_basetype);
        return 1;
    }
#endif /* AFS_AIX51_ENV */

#else /* AFS_HAVE_STATVFS */
    struct statfs statbuf;

    if (statfs(path, &statbuf) < 0) {
        if (afsd_debug)
            printf
                ("statfs failed on %s; skip checking for adequate partition space\n",
                 path);
        return 0;
    }
    totalblks = statbuf.f_blocks;
    bsize = statbuf.f_bsize;
#endif
    if (bsize == -1)
        return 0;               /* success */

    /* now free and totalblks are in fragment units, but we want them in 1K units */
    if (bsize >= 1024) {
        totalblks *= (bsize / 1024);
    } else {
        totalblks /= (1024 / bsize);
    }

    mint = totalblks / 100 * 95;
    if (cs > mint) {
        printf
            ("Cache size (%d) must be less than 95%% of partition size (which is %lld). Lower cache size\n",
             cs, mint);
        return 1;
    }

    return 0;
}

/*-----------------------------------------------------------------------------
  * GetVFileNumber
  *
  * Description:
  *     Given the final component of a filename expected to be a data cache file,
  *     return the integer corresponding to the file.  Note: we reject names that
  *     are not a ``V'' followed by an integer.  We also reject those names having
  *     the right format but lying outside the range [0..cacheFiles-1].
  *
  * Arguments:
  *     fname : Char ptr to the filename to parse.
  *     max   : integer for the highest number to accept
  *
  * Returns:
  *     >= 0 iff the file is really a data cache file numbered from 0 to cacheFiles-1, or
  *     -1      otherwise.
  *
  * Environment:
  *     Nothing interesting.
  *
  * Side Effects:
  *     None.
  *---------------------------------------------------------------------------*/

static int
doGetXFileNumber(char *fname, char filechar, int maxNum)
{
    int computedVNumber;        /*The computed file number we return */
    int filenameLen;            /*Number of chars in filename */
    int currDigit;              /*Current digit being processed */

    /*
     * The filename must have at least two characters, the first of which must be a ``filechar''
     * and the second of which cannot be a zero unless the file is exactly two chars long.
     */
    filenameLen = strlen(fname);
    if (filenameLen < 2)
        return (-1);
    if (fname[0] != filechar)
        return (-1);
    if ((filenameLen > 2) && (fname[1] == '0'))
        return (-1);

    /*
     * Scan through the characters in the given filename, failing immediately if a non-digit
     * is found.
     */
    for (currDigit = 1; currDigit < filenameLen; currDigit++)
        if (isdigit(fname[currDigit]) == 0)
            return (-1);

    /*
     * All relevant characters are digits.  Pull out the decimal number they represent.
     * Reject it if it's out of range, otherwise return it.
     */
    computedVNumber = atoi(++fname);
    if (computedVNumber < cacheFiles)
        return (computedVNumber);
    else
        return (-1);
}

int
GetVFileNumber(char *fname, int maxFile)
{
    return doGetXFileNumber(fname, 'V', maxFile);
}

int
GetDDirNumber(char *fname, int maxDir)
{
    return doGetXFileNumber(fname, 'D', maxDir);
}


/*-----------------------------------------------------------------------------
  * CreateCacheFile
  *
  * Description:
  *     Given a full pathname for a file we need to create for the workstation AFS
  *     cache, go ahead and create the file.
  *
  * Arguments:
  *     fname : Full pathname of file to create.
  *     statp : A pointer to a stat buffer which, if NON-NULL, will be
  *             filled by fstat()
  *
  * Returns:
  *     0   iff the file was created,
  *     -1  otherwise.
  *
  * Environment:
  *     The given cache file has been found to be missing.
  *
  * Side Effects:
  *     As described.
  *---------------------------------------------------------------------------*/

static int
CreateCacheSubDir(char *basename, int dirNum)
{
    static char rn[] = "CreateCacheSubDir";     /* Routine Name */
    char dir[1024];
    int ret;

    /* Build the new cache subdirectory */
    sprintf(dir, "%s/D%d", basename, dirNum);

    if (afsd_debug)
        printf("%s: Creating cache subdir '%s'\n", rn, dir);

    if ((ret = mkdir(dir, 0700)) != 0) {
        printf("%s: Can't create '%s', error return is %d (%d)\n", rn, dir,
               ret, errno);
        if (errno != EEXIST)
            return (-1);
    }

    /* Mark this directory as created */
    cache_dir_list[dirNum] = 0;

    /* And return success */
    return (0);
}

static void
SetNoBackupAttr(char *fullpn)
{
#ifdef AFS_DARWIN80_ENV
    int ret;

    ret = setxattr(fullpn, "com.apple.metadata:com_apple_backup_excludeItem",
                   "com.apple.backupd", strlen("com.apple.backupd"), 0,
                   XATTR_CREATE);
    if(ret < 0)
    {
        if(errno != EEXIST)
            fprintf(stderr, "afsd: Warning: failed to set attribute to preclude cache backup: %s\n", strerror(errno));
    }
#endif
    return;
}

static int
MoveCacheFile(char *basename, int fromDir, int toDir, int cacheFile,
              int maxDir)
{
    static char rn[] = "MoveCacheFile";
    char from[1024], to[1024];
    int ret;

    if (cache_dir_list[toDir] < 0
        && (ret = CreateCacheSubDir(basename, toDir))) {
        printf("%s: Can't create directory '%s/D%d'\n", rn, basename, toDir);
        return ret;
    }

    /* Build the from,to dir */
    if (fromDir < 0) {
        /* old-style location */
        snprintf(from, sizeof(from), "%s/V%d", basename, cacheFile);
    } else {
        snprintf(from, sizeof(from), "%s/D%d/V%d", basename, fromDir,
                 cacheFile);
    }

    snprintf(to, sizeof(from), "%s/D%d/V%d", basename, toDir, cacheFile);

    if (afsd_verbose)
        printf("%s: Moving cacheFile from '%s' to '%s'\n", rn, from, to);

    if ((ret = rename(from, to)) != 0) {
        printf("%s: Can't rename '%s' to '%s', error return is %d (%d)\n", rn,
               from, to, ret, errno);
        return -1;
    }
    SetNoBackupAttr(to);

    /* Reset directory pointer; fix file counts */
    dir_for_V[cacheFile] = toDir;
    cache_dir_list[toDir]++;
    if (fromDir < maxDir && fromDir >= 0)
        cache_dir_list[fromDir]--;

    return 0;
}

int
CreateCacheFile(char *fname, struct stat *statp)
{
    static char rn[] = "CreateCacheFile";       /*Routine name */
    int cfd;                    /*File descriptor to AFS cache file */
    int closeResult;            /*Result of close() */

    if (afsd_debug)
        printf("%s: Creating cache file '%s'\n", rn, fname);
    cfd = open(fname, createAndTrunc, ownerRWmode);
    if (cfd <= 0) {
        printf("%s: Can't create '%s', error return is %d (%d)\n", rn, fname,
               cfd, errno);
        return (-1);
    }
    if (statp != NULL) {
        closeResult = fstat(cfd, statp);
        if (closeResult) {
            printf
                ("%s: Can't stat newly-created AFS cache file '%s' (code %d)\n",
                 rn, fname, errno);
            return (-1);
        }
    }
    closeResult = close(cfd);
    if (closeResult) {
        printf
            ("%s: Can't close newly-created AFS cache file '%s' (code %d)\n",
             rn, fname, errno);
        return (-1);
    }

    return (0);
}

static void
CreateFileIfMissing(char *fullpn, int missing)
{
    if (missing) {
        if (CreateCacheFile(fullpn, NULL))
            printf("CreateFileIfMissing: Can't create '%s'\n", fullpn);
    }
}

static void
UnlinkUnwantedFile(char *rn, char *fullpn_FileToDelete, char *fileToDelete)
{
    if (unlink(fullpn_FileToDelete)) {
        if ((errno == EISDIR || errno == EPERM) && *fileToDelete == 'D') {
            if (rmdir(fullpn_FileToDelete)) {
                printf("%s: Can't rmdir '%s', errno is %d\n", rn,
                       fullpn_FileToDelete, errno);
            }
        } else
            printf("%s: Can't unlink '%s', errno is %d\n", rn,
                   fullpn_FileToDelete, errno);
    }
}

/*-----------------------------------------------------------------------------
  * SweepAFSCache
  *
  * Description:
  *     Sweep through the AFS cache directory, recording the inode number for
  *     each valid data cache file there.  Also, delete any file that doesn't belong
  *     in the cache directory during this sweep, and remember which of the other
  *     residents of this directory were seen.  After the sweep, we create any data
  *     cache files that were missing.
  *
  * Arguments:
  *     vFilesFound : Set to the number of data cache files found.
  *
  * Returns:
  *     0   if everything went well,
  *     -1 otherwise.
  *
  * Environment:
  *     This routine may be called several times.  If the number of data cache files
  *     found is less than the global cacheFiles, then the caller will need to call it
  *     again to record the inodes of the missing zero-length data cache files created
  *     in the previous call.
  *
  * Side Effects:
  *     Fills up the global inode_for_V array, may create and/or delete files as
  *     explained above.
  *---------------------------------------------------------------------------*/


static int
doSweepAFSCache(int *vFilesFound,
                char *directory,        /* /path/to/cache/directory */
                int dirNum,             /* current directory number */
                int maxDir)             /* maximum directory number */
{
    static char rn[] = "doSweepAFSCache";       /* Routine Name */
    char fullpn_FileToDelete[1024];     /*File to be deleted from cache */
    char *fileToDelete;         /*Ptr to last component of above */
    DIR *cdirp;                 /*Ptr to cache directory structure */
#ifdef AFS_SGI62_ENV
    struct dirent64 *currp;     /*Current directory entry */
#else
    struct dirent *currp;       /*Current directory entry */
#endif
    int vFileNum;               /*Data cache file's associated number */
    int thisDir;                /* A directory number */
    int highDir = 0;

    if (afsd_debug)
        printf("%s: Opening cache directory '%s'\n", rn, directory);

    if (chmod(directory, 0700)) {       /* force it to be 700 */
        printf("%s: Can't 'chmod 0700' the cache dir, '%s'.\n", rn,
               directory);
        return (-1);
    }
    cdirp = opendir(directory);
    if (cdirp == (DIR *) 0) {
        printf("%s: Can't open AFS cache directory, '%s'.\n", rn, directory);
        return (-1);
    }

    /*
     * Scan the directory entries, remembering data cache file inodes
     * and the existance of other important residents.  Recurse into
     * the data subdirectories.
     *
     * Delete all files and directories that don't belong here.
     */
    sprintf(fullpn_FileToDelete, "%s/", directory);
    fileToDelete = fullpn_FileToDelete + strlen(fullpn_FileToDelete);

#ifdef AFS_SGI62_ENV
    for (currp = readdir64(cdirp); currp; currp = readdir64(cdirp))
#else
    for (currp = readdir(cdirp); currp; currp = readdir(cdirp))
#endif
    {
        if (afsd_debug) {
            printf("%s: Current directory entry:\n", rn);
#if defined(AFS_SGI62_ENV) || defined(AFS_DARWIN90_ENV)
            printf("\tinode=%" AFS_INT64_FMT ", reclen=%d, name='%s'\n", currp->d_ino,
                   currp->d_reclen, currp->d_name);
#elif defined(AFS_DFBSD_ENV) || defined(AFS_USR_DFBSD_ENV)
            printf("\tinode=%ld, name='%s'\n", (long)currp->d_ino, currp->d_name);
#else
            printf("\tinode=%ld, reclen=%d, name='%s'\n", (long)currp->d_ino,
                   currp->d_reclen, currp->d_name);
#endif
        }

        /*
         * If dirNum < 0, we are a top-level cache directory and should
         * only contain sub-directories and other sundry files.  Therefore,
         * V-files are valid only if dirNum >= 0, and Directories are only
         * valid if dirNum < 0.
         */

        if (*(currp->d_name) == 'V'
            && ((vFileNum = GetVFileNumber(currp->d_name, cacheFiles)) >=
                0)) {
            /*
             * Found a valid data cache filename.  Remember this
             * file's inode, directory, and bump the number of files found
             * total and in this directory.
             */
#if !defined(AFS_CACHE_VNODE_PATH) && !defined(AFS_LINUX26_ENV)
            inode_for_V[vFileNum] = currp->d_ino;
#endif
            dir_for_V[vFileNum] = dirNum;       /* remember this directory */

            if (!maxDir) {
                /* If we're in a real subdir, mark this file to be moved
                 * if we've already got too many files in this directory
                 */
                assert(dirNum >= 0);
                cache_dir_list[dirNum]++;       /* keep directory's file count */
                if (cache_dir_list[dirNum] > nFilesPerDir) {
                    /* Too many files -- add to filelist */
                    struct afsd_file_list *tmp = malloc(sizeof(*tmp));
                    if (!tmp)
                        printf
                            ("%s: MALLOC FAILED allocating file_list entry\n",
                             rn);
                    else {
                        tmp->fileNum = vFileNum;
                        tmp->next = cache_dir_filelist[dirNum];
                        cache_dir_filelist[dirNum] = tmp;
                    }
                }
            }
            (*vFilesFound)++;
        } else if (dirNum < 0 && (*(currp->d_name) == 'D')
                   && GetDDirNumber(currp->d_name, 1 << 30) >= 0) {
            int retval = 0;
            if ((vFileNum = GetDDirNumber(currp->d_name, maxDir)) >= 0) {
                /* Found a valid cachefile sub-Directory.  Remember this number
                 * and recurse into it.  Note that subdirs cannot have subdirs.
                 */
                retval = 1;
            } else if ((vFileNum = GetDDirNumber(currp->d_name, 1 << 30)) >=
                       0) {
                /* This directory is going away, but figure out if there
                 * are any cachefiles in here that should be saved by
                 * moving them to other cache directories.  This directory
                 * will be removed later.
                 */
                retval = 2;
            }

            /* Save the highest directory number we've seen */
            if (vFileNum > highDir)
                highDir = vFileNum;

            /* If this directory is staying, be sure to mark it as 'found' */
            if (retval == 1)
                cache_dir_list[vFileNum] = 0;

            /* Print the dirname for recursion */
            sprintf(fileToDelete, "%s", currp->d_name);

            /* Note: vFileNum is the directory number */
            retval =
                doSweepAFSCache(vFilesFound, fullpn_FileToDelete, vFileNum,
                                (retval == 1 ? 0 : -1));
            if (retval) {
                printf("%s: Recursive sweep failed on directory %s\n", rn,
                       currp->d_name);
                return retval;
            }
        } else if (dirNum < 0 && strcmp(currp->d_name, DCACHEFILE) == 0) {
            /*
             * Found the file holding the dcache entries.
             */
            missing_DCacheFile = 0;
            SetNoBackupAttr(fullpn_DCacheFile);
        } else if (dirNum < 0 && strcmp(currp->d_name, VOLINFOFILE) == 0) {
            /*
             * Found the file holding the volume info.
             */
            missing_VolInfoFile = 0;
            SetNoBackupAttr(fullpn_VolInfoFile);
        } else if (dirNum < 0 && strcmp(currp->d_name, CELLINFOFILE) == 0) {
            /*
             * Found the file holding the cell info.
             */
            missing_CellInfoFile = 0;
            SetNoBackupAttr(fullpn_CellInfoFile);
        } else if ((strcmp(currp->d_name, ".") == 0)
                   || (strcmp(currp->d_name, "..") == 0) ||
#ifdef AFS_DECOSF_ENV
                   /* these are magic AdvFS files */
                   (strcmp(currp->d_name, ".tags") == 0)
                   || (strcmp(currp->d_name, "quota.user") == 0)
                   || (strcmp(currp->d_name, "quota.group") == 0) ||
#endif
#ifdef AFS_LINUX22_ENV
                   /* this is the ext3 journal file */
                   (strcmp(currp->d_name, ".journal") == 0) ||
#endif
                   (strcmp(currp->d_name, "lost+found") == 0)) {
            /*
             * Don't do anything - this file is legit, and is to be left alone.
             */
        } else {
            /*
             * This file/directory doesn't belong in the cache.  Nuke it.
             */
            sprintf(fileToDelete, "%s", currp->d_name);
            if (afsd_verbose)
                printf("%s: Deleting '%s'\n", rn, fullpn_FileToDelete);
            UnlinkUnwantedFile(rn, fullpn_FileToDelete, fileToDelete);
        }
    }

    if (dirNum < 0) {

        /*
         * Create all the cache files that are missing.
         */
        CreateFileIfMissing(fullpn_DCacheFile, missing_DCacheFile);
        CreateFileIfMissing(fullpn_VolInfoFile, missing_VolInfoFile);
        CreateFileIfMissing(fullpn_CellInfoFile, missing_CellInfoFile);

        /* ADJUST CACHE FILES */

        /* First, let's walk through the list of files and figure out
         * if there are any leftover files in extra directories or
         * missing files.  Move the former and create the latter in
         * subdirs with extra space.
         */

        thisDir = 0;            /* Keep track of which subdir has space */

        for (vFileNum = 0; vFileNum < cacheFiles; vFileNum++) {
            if (dir_for_V[vFileNum] == -1) {
                /* This file does not exist.  Create it in the first
                 * subdir that still has extra space.
                 */
                while (thisDir < maxDir
                       && cache_dir_list[thisDir] >= nFilesPerDir)
                    thisDir++;
                if (thisDir >= maxDir)
                    printf("%s: can't find directory to create V%d\n", rn,
                           vFileNum);
                else {
                    struct stat statb;
#if !defined(AFS_CACHE_VNODE_PATH) && !defined(AFS_LINUX26_ENV)
                    assert(inode_for_V[vFileNum] == (AFSD_INO_T) 0);
#endif
                    sprintf(vFilePtr, "D%d/V%d", thisDir, vFileNum);
                    if (afsd_verbose)
                        printf("%s: Creating '%s'\n", rn, fullpn_VFile);
                    if (cache_dir_list[thisDir] < 0
                        && CreateCacheSubDir(directory, thisDir))
                        printf("%s: Can't create directory for '%s'\n", rn,
                               fullpn_VFile);
                    if (CreateCacheFile(fullpn_VFile, &statb))
                        printf("%s: Can't create '%s'\n", rn, fullpn_VFile);
                    else {
#if !defined(AFS_CACHE_VNODE_PATH) && !defined(AFS_LINUX26_ENV)
                        inode_for_V[vFileNum] = statb.st_ino;
#endif
                        dir_for_V[vFileNum] = thisDir;
                        cache_dir_list[thisDir]++;
                        (*vFilesFound)++;
                    }
                    SetNoBackupAttr(fullpn_VFile);
                }

            } else if (dir_for_V[vFileNum] >= maxDir
                       || dir_for_V[vFileNum] == -2) {
                /* This file needs to move; move it to the first subdir
                 * that has extra space.  (-2 means it's in the toplevel)
                 */
                while (thisDir < maxDir
                       && cache_dir_list[thisDir] >= nFilesPerDir)
                    thisDir++;
                if (thisDir >= maxDir)
                    printf("%s: can't find directory to move V%d\n", rn,
                           vFileNum);
                else {
                    if (MoveCacheFile
                        (directory, dir_for_V[vFileNum], thisDir, vFileNum,
                         maxDir)) {
                        /* Cannot move.  Ignore this file??? */
                        /* XXX */
                    }
                }
            }
        }                       /* for */

        /* At this point, we've moved all of the valid cache files
         * into the valid subdirs, and created all the extra
         * cachefiles we need to create.  Next, rebalance any subdirs
         * with too many cache files into the directories with not
         * enough cache files.  Note that thisDir currently sits at
         * the lowest subdir that _may_ have room.
         */

        for (dirNum = 0; dirNum < maxDir; dirNum++) {
            struct afsd_file_list *thisFile;

            for (thisFile = cache_dir_filelist[dirNum];
                 thisFile && cache_dir_list[dirNum] >= nFilesPerDir;
                 thisFile = thisFile->next) {
                while (thisDir < maxDir
                       && cache_dir_list[thisDir] >= nFilesPerDir)
                    thisDir++;
                if (thisDir >= maxDir)
                    printf("%s: can't find directory to move V%d\n", rn,
                           vFileNum);
                else {
                    if (MoveCacheFile
                        (directory, dirNum, thisDir, thisFile->fileNum,
                         maxDir)) {
                        /* Cannot move.  Ignore this file??? */
                        /* XXX */
                    }
                }
            }                   /* for each file to move */
        }                       /* for each directory */

        /* Remove any directories >= maxDir -- they should be empty */
        for (; highDir >= maxDir; highDir--) {
            sprintf(fileToDelete, "D%d", highDir);
            UnlinkUnwantedFile(rn, fullpn_FileToDelete, fileToDelete);
        }
    }

    /* dirNum < 0 */
    /*
     * Close the directory, return success.
     */
    if (afsd_debug)
        printf("%s: Closing cache directory.\n", rn);
    closedir(cdirp);
    return (0);
}

char *
CheckCacheBaseDir(char *dir)
{
    struct stat statbuf;

    if (!dir) {
        return "cache base dir not specified";
    }
    if (stat(dir, &statbuf) != 0) {
        return "unable to stat cache base directory";
    }

    /* might want to check here for anything else goofy, like cache pointed at a non-dedicated directory, etc */

#ifdef AFS_LINUX24_ENV
    {
        int res;
        struct statfs statfsbuf;

        res = statfs(dir, &statfsbuf);
        if (res != 0) {
            return "unable to statfs cache base directory";
        }
#if !defined(AFS_LINUX26_ENV)
        if (statfsbuf.f_type == 0x52654973) {   /* REISERFS_SUPER_MAGIC */
            return "cannot use reiserfs as cache partition";
        } else if (statfsbuf.f_type == 0x58465342) {    /* XFS_SUPER_MAGIC */
            return "cannot use xfs as cache partition";
        } else if (statfsbuf.f_type == 0x01021994) {    /* TMPFS_SUPER_MAGIC */
            return "cannot use tmpfs as cache partition";
        } else if (statfsbuf.f_type != 0xEF53) {
            return "must use ext2 or ext3 for cache partition";
        }
#endif
    }
#endif

#ifdef AFS_HPUX_ENV
    {
        int res;
        struct statfs statfsbuf;
        char name[FSTYPSZ];

        res = statfs(dir, &statfsbuf);
        if (res != 0) {
            return "unable to statfs cache base directory";
        }

        if (sysfs(GETFSTYP, statfsbuf.f_fsid[1], name) != 0) {
            return "unable to determine filesystem type for cache base dir";
        }

        if (strcmp(name, "hfs")) {
            return "can only use hfs filesystem for cache partition on hpux";
        }
    }
#endif

#ifdef AFS_SUN5_ENV
    {
        FILE *vfstab;
        struct mnttab mnt;
        struct stat statmnt, statci;

        if ((stat(dir, &statci) == 0)
            && ((vfstab = fopen(MNTTAB, "r")) != NULL)) {
            while (getmntent(vfstab, &mnt) == 0) {
                if (strcmp(dir, mnt.mnt_mountp) != 0) {
                    char *cp;
                    int rdev = 0;

                    if (cp = hasmntopt(&mnt, "dev="))
                        rdev =
                            (int)strtol(cp + strlen("dev="), NULL,
                                        16);

                    if ((rdev == 0) && (stat(mnt.mnt_mountp, &statmnt) == 0))
                        rdev = statmnt.st_dev;

                    if ((rdev == statci.st_dev)
                        && (hasmntopt(&mnt, "logging") != NULL)) {

                        fclose(vfstab);
                        return
                            "mounting a multi-use partition which contains the AFS cache with the\n\"logging\" option may deadlock your system.\n\n";
                    }
                }
            }

            fclose(vfstab);
        }
    }
#endif

    return NULL;
}

int
SweepAFSCache(int *vFilesFound)
{
    static char rn[] = "SweepAFSCache"; /*Routine name */
    int maxDir = (cacheFiles + nFilesPerDir - 1) / nFilesPerDir;
    int i;

    *vFilesFound = 0;

    if (cacheFlags & AFSCALL_INIT_MEMCACHE) {
        if (afsd_debug)
            printf("%s: Memory Cache, no cache sweep done\n", rn);
        return 0;
    }

    if (cache_dir_list == NULL) {
        cache_dir_list = malloc(maxDir * sizeof(*cache_dir_list));
        if (cache_dir_list == NULL) {
            printf("%s: Malloc Failed!\n", rn);
            return (-1);
        }
        for (i = 0; i < maxDir; i++)
            cache_dir_list[i] = -1;     /* Does not exist */
    }

    if (cache_dir_filelist == NULL) {
        cache_dir_filelist = calloc(maxDir, sizeof(*cache_dir_filelist));
        if (cache_dir_filelist == NULL) {
            printf("%s: Malloc Failed!\n", rn);
            return (-1);
        }
    }

    if (dir_for_V == NULL) {
        dir_for_V = malloc(cacheFiles * sizeof(*dir_for_V));
        if (dir_for_V == NULL) {
            printf("%s: Malloc Failed!\n", rn);
            return (-1);
        }
        for (i = 0; i < cacheFiles; i++)
            dir_for_V[i] = -1;  /* Does not exist */
    }

    /* Note, setting dirNum to -2 here will cause cachefiles found in
     * the toplevel directory to be marked in directory "-2".  This
     * allows us to differentiate between 'file not seen' (-1) and
     * 'file seen in top-level' (-2).  Then when we try to move the
     * file into a subdirectory, we know it's in the top-level instead
     * of some other cache subdir.
     */
    return doSweepAFSCache(vFilesFound, cacheBaseDir, -2, maxDir);
}

static int
ConfigCell(struct afsconf_cell *aci, void *arock, struct afsconf_dir *adir)
{
    int isHomeCell;
    int i, code;
    int cellFlags = 0;
    afs_int32 hosts[MAXHOSTSPERCELL];

    /* figure out if this is the home cell */
    isHomeCell = (strcmp(aci->name, LclCellName) == 0);
    if (!isHomeCell) {
        cellFlags = 2;          /* not home, suid is forbidden */
        if (enable_dynroot == 2)
            cellFlags |= 8; /* don't display foreign cells until looked up */
    }
    /* build address list */
    for (i = 0; i < MAXHOSTSPERCELL; i++)
        memcpy(&hosts[i], &aci->hostAddr[i].sin_addr, sizeof(afs_int32));

    if (aci->linkedCell)
        cellFlags |= 4;         /* Flag that linkedCell arg exists,
                                 * for upwards compatibility */

    /* configure one cell */
    code = afsd_syscall(AFSOP_ADDCELL2, hosts,  /* server addresses */
                        aci->name,      /* cell name */
                        cellFlags,      /* is this the home cell? */
                        aci->linkedCell);       /* Linked cell, if any */
    if (code)
        printf("Adding cell '%s': error %d\n", aci->name, code);
    return 0;
}

static int
ConfigCellAlias(struct afsconf_cellalias *aca,
                void *arock, struct afsconf_dir *adir)
{
    /* push the alias into the kernel */
    afsd_syscall(AFSOP_ADDCELLALIAS, aca->aliasName, aca->realName);
    return 0;
}

static void
AfsdbLookupHandler(void)
{
    afs_int32 kernelMsg[64];
    char acellName[128];
    afs_int32 code;
    struct afsconf_cell acellInfo;
    int i;

    kernelMsg[0] = 0;
    kernelMsg[1] = 0;
    acellName[0] = '\0';

#ifdef MACOS_EVENT_HANDLING
    /* Fork the event handler also. */
    code = fork();
    if (code == 0) {
        afsd_install_events();
        return;
    } else if (code != -1) {
        event_pid = code;
    }
#endif
    while (1) {
        /* On some platforms you only get 4 args to an AFS call */
        int sizeArg = ((sizeof acellName) << 16) | (sizeof kernelMsg);
        code =
            afsd_syscall(AFSOP_AFSDB_HANDLER, acellName, kernelMsg, sizeArg);
        if (code) {             /* Something is wrong? */
            sleep(1);
            continue;
        }

        if (*acellName == 1)    /* Shutting down */
            break;

        code = afsconf_GetAfsdbInfo(acellName, 0, &acellInfo);
        if (code) {
            kernelMsg[0] = 0;
            kernelMsg[1] = 0;
        } else {
            kernelMsg[0] = acellInfo.numServers;
            if (acellInfo.timeout)
                kernelMsg[1] = acellInfo.timeout - time(0);
            else
                kernelMsg[1] = 0;
            for (i = 0; i < acellInfo.numServers; i++)
                kernelMsg[i + 2] = acellInfo.hostAddr[i].sin_addr.s_addr;
            strncpy(acellName, acellInfo.name, sizeof(acellName));
            acellName[sizeof(acellName) - 1] = '\0';
        }
    }
#ifdef AFS_DARWIN_ENV
    kill(event_pid, SIGTERM);
#endif
}

#ifdef AFS_NEW_BKG
static void
BkgHandler(void)
{
    afs_int32 code;
    struct afs_uspc_param *uspc;
    char srcName[256];
    char dstName[256];

    uspc = calloc(1, sizeof(struct afs_uspc_param));
    memset(srcName, 0, sizeof(srcName));
    memset(dstName, 0, sizeof(dstName));

    /* brscount starts at 0 */
    uspc->ts = -1;

    while (1) {
        pid_t child = 0;
        int status;
        char srcpath[BUFSIZ];
        char dstpath[BUFSIZ];

        /* pushing in a buffer this large */
        uspc->bufSz = 256;

        code = afsd_syscall(AFSOP_BKG_HANDLER, uspc, srcName, dstName);
        if (code) {             /* Something is wrong? */
            if (code == -2) /* shutting down */
                break;

            sleep(1);
            uspc->retval = -1;
            continue;
        }

        switch (uspc->reqtype) {
        case AFS_USPC_UMV:
            snprintf(srcpath, BUFSIZ, "/afs/.:mount/%d:%d:%d:%d/%s",
                     uspc->req.umv.sCell, uspc->req.umv.sVolume,
                     uspc->req.umv.sVnode, uspc->req.umv.sUnique, srcName);
            snprintf(dstpath, BUFSIZ, "/afs/.:mount/%d:%d:%d:%d/%s",
                     uspc->req.umv.dCell, uspc->req.umv.dVolume,
                     uspc->req.umv.dVnode, uspc->req.umv.dUnique, dstName);
            if ((child = fork()) == 0) {
                /* first child does cp; second, rm. mv would re-enter. */

                switch (uspc->req.umv.idtype) {
                case IDTYPE_UID:
                    if (setuid(uspc->req.umv.id) != 0) {
                        exit(-1);
                    }
                    break;
                default:
                    exit(-1);
                    break; /* notreached */
                }
                execl("/bin/cp", "(afsd EXDEV helper)", "-PRp", "--", srcpath,
                      dstpath, (char *) NULL);
            }
            if (child == (pid_t) -1) {
                uspc->retval = -1;
                continue;
            }

            if (waitpid(child, &status, 0) == -1)
                uspc->retval = EIO;
            else if (WIFEXITED(status) != 0 && WEXITSTATUS(status) == 0) {
                if ((child = fork()) == 0) {
                    switch (uspc->req.umv.idtype) {
                    case IDTYPE_UID:
                        if (setuid(uspc->req.umv.id) != 0) {
                            exit(-1);
                        }
                        break;
                    default:
                        exit(-1);
                        break; /* notreached */
                    }
                    execl("/bin/rm", "(afsd EXDEV helper)", "-rf", "--",
                          srcpath, (char *) NULL);
                }
                if (child == (pid_t) -1) {
                    uspc->retval = -1;
                    continue;
                }
                if (waitpid(child, &status, 0) == -1)
                    uspc->retval = EIO;
                else if (WIFEXITED(status) != 0) {
                    /* rm exit status */
                    uspc->retval = WEXITSTATUS(status);
                } else {
                    /* rm signal status */
                    uspc->retval = -(WTERMSIG(status));
                }
            } else {
                /* error from cp: exit or signal status */
                uspc->retval = (WIFEXITED(status) != 0) ?
                    WEXITSTATUS(status) : -(WTERMSIG(status));
            }
            memset(srcName, 0, sizeof(srcName));
            memset(dstName, 0, sizeof(dstName));
            break;

        default:
            /* unknown req type */
            uspc->retval = -1;
            break;
        }
    }
}
#endif

static void *
afsdb_thread(void *rock)
{
    /* Since the AFSDB lookup handler runs as a user process,
     * need to drop the controlling TTY, etc.
     */
    if (afsd_daemon(0, 0) == -1) {
        printf("Error starting AFSDB lookup handler: %s\n",
               strerror(errno));
        exit(1);
    }
    AfsdbLookupHandler();
    return NULL;
}

static void *
daemon_thread(void *rock)
{
#ifdef AFS_NEW_BKG
    /* Since the background daemon runs as a user process,
     * need to drop the controlling TTY, etc.
     */
    if (afsd_daemon(0, 0) == -1) {
        printf("Error starting background daemon: %s\n",
               strerror(errno));
        exit(1);
    }
    BkgHandler();
#else
    afsd_syscall(AFSOP_START_BKG, 0);
#endif
    return NULL;
}

#ifndef UKERNEL
static void *
rmtsysd_thread(void *rock)
{
    rmtsysd();
    return NULL;
}
#endif /* !UKERNEL */

/**
 * Check the command line and cacheinfo options.
 *
 * @param[in] as  parsed command line arguments
 *
 * @note Invokes the shutdown syscall and exits with 0 when
 *       -shutdown is given.
 */
static int
CheckOptions(struct cmd_syndesc *as)
{
    afs_int32 code;             /*Result of fork() */
#ifdef  AFS_SUN5_ENV
    struct stat st;
#endif
#ifdef AFS_SGI65_ENV
    struct sched_param sp;
#endif

#ifdef AFS_SGI_VNODE_GLUE
    if (afs_init_kernel_config(-1) < 0) {
        printf("Can't determine NUMA configuration, not starting AFS.\n");
        exit(1);
    }
#endif

    cmd_OpenConfigFile(AFSDIR_CLIENT_CONFIG_FILE_FILEPATH);
    cmd_SetCommandName("afsd");

    /* call atoi on the appropriate parsed results */
    if (cmd_OptionAsInt(as, OPT_blocks, &cacheBlocks) == 0)
        sawCacheBlocks = 1;

    if (cmd_OptionAsInt(as, OPT_files, &cacheFiles) == 0)
        filesSet = 1;

    if (cmd_OptionAsString(as, OPT_rootvol, &rootVolume) == 0)
        rootVolSet = 1;

    if (cmd_OptionAsInt(as, OPT_stat, &cacheStatEntries) == 0)
        sawCacheStatEntries = 1;

    if (cmd_OptionPresent(as, OPT_memcache)) {
        cacheBaseDir = NULL;
        sawCacheBaseDir = 1;
        cacheFlags |= AFSCALL_INIT_MEMCACHE;
    }

    if (cmd_OptionAsString(as, OPT_cachedir, &cacheBaseDir) == 0)
        sawCacheBaseDir = 1;

    if (cmd_OptionAsString(as, OPT_mountdir, &afsd_cacheMountDir) == 0)
        sawCacheMountDir = 1;

    cmd_OptionAsInt(as, OPT_daemons, &nDaemons);

    afsd_verbose = cmd_OptionPresent(as, OPT_verbose);

    if (cmd_OptionPresent(as, OPT_rmtsys)) {
        afsd_rmtsys = 1;
#ifdef UKERNEL
        printf("-rmtsys not supported for UKERNEL\n");
        return -1;
#endif
    }

    if (cmd_OptionPresent(as, OPT_debug)) {
        afsd_debug = 1;
        afsd_verbose = 1;
    }

    if (cmd_OptionAsInt(as, OPT_chunksize, &chunkSize) == 0) {
        if (chunkSize < 0 || chunkSize > 30) {
            printf
                ("afsd:invalid chunk size (not in range 0-30), using default\n");
            chunkSize = 0;
        }
    }

    if (cmd_OptionAsInt(as, OPT_dcache, &dCacheSize) == 0)
        sawDCacheSize = 1;

    cmd_OptionAsInt(as, OPT_volumes, &vCacheSize);

    if (cmd_OptionPresent(as, OPT_biods)) {
        /* -biods */
#ifndef AFS_AIX32_ENV
        printf
            ("afsd: [-biods] currently only enabled for aix3.x VM supported systems\n");
#else
        cmd_OptionAsInt(as, OPT_biods, &nBiods);
#endif
    }
    cmd_OptionAsInt(as, OPT_prealloc, &preallocs);

    if (cmd_OptionAsString(as, OPT_confdir, &confDir) == CMD_MISSING) {
        confDir = strdup(AFSDIR_CLIENT_ETC_DIRPATH);
    }
    sprintf(fullpn_CacheInfo, "%s/%s", confDir, CACHEINFOFILE);

    if (cmd_OptionPresent(as, OPT_logfile)) {
        printf("afsd: Ignoring obsolete -logfile flag\n");
    }

    afsd_CloseSynch = cmd_OptionPresent(as, OPT_waitclose);

    if (cmd_OptionPresent(as, OPT_shutdown)) {
        /* -shutdown */
        afs_shutdown = 1;
        /*
         * Cold shutdown is the default
         */
        printf("afsd: Shutting down all afs processes and afs state\n");
        code = afsd_syscall(AFSOP_SHUTDOWN, 1);
        if (code) {
            printf("afsd: AFS still mounted; Not shutting down\n");
            exit(1);
        }
        exit(0);
    }

    enable_peer_stats = cmd_OptionPresent(as, OPT_peerstats);
    enable_process_stats = cmd_OptionPresent(as, OPT_processstats);

    if (cmd_OptionPresent(as, OPT_memallocsleep)) {
        printf("afsd: -mem_alloc_sleep is deprecated -- ignored\n");
    }

    enable_afsdb = cmd_OptionPresent(as, OPT_afsdb);
    if (cmd_OptionPresent(as, OPT_filesdir)) {
        /* -files_per_subdir */
        int res;
        cmd_OptionAsInt(as, OPT_filesdir, &res);
        if (res < 10 || res > (1 << 30)) {
            printf
                ("afsd:invalid number of files per subdir, \"%s\". Ignored\n",
                 as->parms[25].items->data);
        } else {
            nFilesPerDir = res;
        }
    }
    enable_dynroot = cmd_OptionPresent(as, OPT_dynroot);

    if (cmd_OptionPresent(as, OPT_fakestat)) {
        enable_fakestat = 2;
    }
    if (cmd_OptionPresent(as, OPT_fakestatall)) {
        enable_fakestat = 1;
    }
    if (cmd_OptionPresent(as, OPT_settime)) {
        /* -settime */
        printf("afsd: -settime ignored\n");
        printf("afsd: the OpenAFS client no longer sets the system time; "
               "please use NTP or\n");
        printf("afsd: another such system to synchronize client time\n");
    }

    enable_nomount = cmd_OptionPresent(as, OPT_nomount);
    enable_backuptree = cmd_OptionPresent(as, OPT_backuptree);
    enable_rxbind = cmd_OptionPresent(as, OPT_rxbind);

    /* set rx_extraPackets */
    if (cmd_OptionPresent(as, OPT_rxpck)) {
        /* -rxpck */
        int rxpck;
        cmd_OptionAsInt(as, OPT_rxpck, &rxpck);
        printf("afsd: set rxpck = %d\n", rxpck);
        code = afsd_syscall(AFSOP_SET_RXPCK, rxpck);
        if (code) {
            printf("afsd: failed to set rxpck\n");
            exit(1);
        }
    }
    if (cmd_OptionPresent(as, OPT_splitcache)) {
        char *c;
        char *var = NULL;

        cmd_OptionAsString(as, OPT_splitcache, &var);

        if (var == NULL || ((c = strchr(var, '/')) == NULL))
            printf
                ("ignoring splitcache (specify as RW/RO percentages: 60/40)\n");
        else {
            ropct = atoi(c + 1);
            *c = '\0';
            rwpct = atoi(var);
            if ((rwpct != 0) && (ropct != 0) && (ropct + rwpct == 100)) {
                /* -splitcache */
                enable_splitcache = 1;
            }
        }
        free(var);
    }
    if (cmd_OptionPresent(as, OPT_nodynvcache)) {
#ifdef AFS_MAXVCOUNT_ENV
       afsd_dynamic_vcaches = 0;
#else
       printf("afsd: Error toggling flag, dynamically allocated vcaches not supported on your platform\n");
       exit(1);
#endif
    }
#ifdef AFS_MAXVCOUNT_ENV
    else {
       /* -dynamic-vcaches */
       afsd_dynamic_vcaches = 1;
    }

    if (afsd_verbose)
    printf("afsd: %s dynamically allocated vcaches\n", ( afsd_dynamic_vcaches ? "enabling" : "disabling" ));
#endif

    cmd_OptionAsInt(as, OPT_rxmaxmtu, &rxmaxmtu);

    if (cmd_OptionPresent(as, OPT_dynrootsparse)) {
        enable_dynroot = 2;
    }

    cmd_OptionAsInt(as, OPT_rxmaxfrags, &rxmaxfrags);
    if (cmd_OptionPresent(as, OPT_inumcalc)) {
        cmd_OptionAsString(as, OPT_inumcalc, &inumcalc);
    }
    cmd_OptionAsInt(as, OPT_volume_ttl, &volume_ttl);

    /* parse cacheinfo file if this is a diskcache */
    if (ParseCacheInfoFile()) {
        exit(1);
    }

    return 0;
}

int
afsd_run(void)
{
    static char rn[] = "afsd";  /*Name of this routine */
    struct afsconf_dir *cdir;   /* config dir */
    int lookupResult;           /*Result of GetLocalCellName() */
    int i;
    int code;                   /*Result of fork() */
    char *fsTypeMsg = NULL;
    int cacheIteration;         /*How many times through cache verification */
    int vFilesFound;            /*How many data cache files were found in sweep */
    int currVFile;              /*Current AFS cache file number passed in */

        /*
     * Pull out all the configuration info for the workstation's AFS cache and
     * the cellular community we're willing to let our users see.
     */
    cdir = afsconf_Open(confDir);
    if (!cdir) {
        printf("afsd: some file missing or bad in %s\n", confDir);
        exit(1);
    }

    lookupResult =
        afsconf_GetLocalCell(cdir, LclCellName, sizeof(LclCellName));
    if (lookupResult) {
        printf("%s: Can't get my home cell name!  [Error is %d]\n", rn,
               lookupResult);
    } else {
        if (afsd_verbose)
            printf("%s: My home cell is '%s'\n", rn, LclCellName);
    }

    if (!enable_nomount) {
        if (afsd_check_mount(rn, afsd_cacheMountDir)) {
            return -1;
        }
    }

    /* do some random computations in memcache case to get things to work
     * reasonably no matter which parameters you set.
     */
    if (cacheFlags & AFSCALL_INIT_MEMCACHE) {
        /* memory cache: size described either as blocks or dcache entries, but
         * not both.
         */
        if (filesSet) {
            fprintf(stderr, "%s: -files ignored with -memcache\n", rn);
        }
        if (sawDCacheSize) {
            if (chunkSize == 0) {
                chunkSize = 13; /* 8k default chunksize for memcache */
            }
            if (sawCacheBlocks) {
                printf
                    ("%s: can't set cache blocks and dcache size simultaneously when diskless.\n",
                     rn);
                exit(1);
            }
            /* compute the cache size based on # of chunks times the chunk size */
            i = (1 << chunkSize);       /* bytes per chunk */
            cacheBlocks = i * dCacheSize;
            sawCacheBlocks = 1; /* so that ParseCacheInfoFile doesn't overwrite */
        } else {
            if (chunkSize == 0) {
                /* Try to autotune the memcache chunksize based on size
                 * of memcache. This is done on the assumption that approx
                 * 1024 chunks is suitable, it's a balance between enough
                 * chunks to be useful and ramping up nicely when using larger
                 * memcache to improve bulk read/write performance
                 */
                for (i = 14;
                     i <= 21 && (1 << i) / 1024 < (cacheBlocks / 1024); i++);
                chunkSize = i - 1;
            }
            /* compute the dcache size from overall cache size and chunk size */
            if (chunkSize > 10) {
                dCacheSize = (cacheBlocks >> (chunkSize - 10));
            } else if (chunkSize < 10) {
                dCacheSize = (cacheBlocks << (10 - chunkSize));
            } else {
                dCacheSize = cacheBlocks;
            }
            /* don't have to set sawDCacheSize here since it isn't overwritten
             * by ParseCacheInfoFile.
             */
        }
        if (afsd_verbose)
            printf("%s: chunkSize autotuned to %d\n", rn, chunkSize);

        /* kernel computes # of dcache entries as min of cacheFiles and
         * dCacheSize, so we now make them equal.
         */
        cacheFiles = dCacheSize;
    } else {
        /* Disk cache:
         * Compute the number of cache files based on cache size,
         * but only if -files isn't given on the command line.
         * Don't let # files be so small as to prevent full utilization
         * of the cache unless user has explicitly asked for it.
         */
        if (chunkSize == 0) {
            /* Set chunksize to 256kB - 1MB depending on cache size */
            if (cacheBlocks < 500000) {
                chunkSize = 18;
            } else if (cacheBlocks < 1000000) {
                chunkSize = 19;
            } else {
                chunkSize = 20;
            }
        }

        if (!filesSet) {
            cacheFiles = cacheBlocks / 32;      /* Assume 32k avg filesize */

            cacheFiles = max(cacheFiles, 1000);

            /* Always allow more files than chunks.  Presume average V-file
             * is ~67% of a chunk...  (another guess, perhaps Honeyman will
             * have a grad student write a paper).  i is KILOBYTES.
             */
            i = 1 << (chunkSize < 10 ? 0 : chunkSize - 10);
            cacheFiles = max(cacheFiles, 1.5 * (cacheBlocks / i));

            /* never permit more files than blocks, while leaving space for
             * VolumeInfo and CacheItems files.  VolumeInfo is usually 20K,
             * CacheItems is 50 Bytes / file (== 1K/20)
             */
#define CACHEITMSZ (cacheFiles / 20)
#define VOLINFOSZ 50            /* 40kB has been seen, be conservative */
#define CELLINFOSZ 4            /* Assuming disk block size is 4k ... */
#define INFOSZ (VOLINFOSZ+CELLINFOSZ+CACHEITMSZ)

            /* Sanity check: If the obtained number of disk cache files
             * is larger than the number of available (4k) disk blocks, we're
             * doing something wrong. Fail hard so we can fix the bug instead
             * of silently hiding it like before */

            if (cacheFiles > (cacheBlocks - INFOSZ) / 4) {
                fprintf(stderr,
                        "%s: ASSERT: cacheFiles %d  diskblocks %d\n",
                        rn, cacheFiles, (cacheBlocks - INFOSZ) / 4);
                exit(1);
            }
            if (cacheFiles < 100)
                fprintf(stderr, "%s: WARNING: cache probably too small!\n",
                        rn);

            if (afsd_verbose)
                printf("%s: cacheFiles autotuned to %d\n", rn, cacheFiles);
        }
#if 0
       /* This actually needs to
          1) use powers of 2
          2) not second-guess when a chunksize comes from the command line
          3) be less, um, small. 2^2??
       */
        /* Sanity check chunkSize */
        i = max(cacheBlocks / 1000, cacheBlocks / cacheFiles);
        chunkSize = min(chunkSize, i);
        chunkSize = max(chunkSize, 2);
        if (afsd_verbose)
            printf("%s: chunkSize autotuned to %d\n", rn, chunkSize);
#endif

        if (!sawDCacheSize) {
            dCacheSize = cacheFiles / 2;
            if (dCacheSize > 10000) {
                dCacheSize = 10000;
            }
            if (dCacheSize < 2000) {
                dCacheSize = 2000;
            }
            if (afsd_verbose)
                printf("%s: dCacheSize autotuned to %d\n", rn, dCacheSize);
        }
    }
    if (!sawCacheStatEntries) {
        if (chunkSize <= 13) {
            cacheStatEntries = dCacheSize / 4;
        } else if (chunkSize >= 16) {
            cacheStatEntries = dCacheSize * 1.5;
        } else {
            cacheStatEntries = dCacheSize;
        }
        if (afsd_verbose)
            printf("%s: cacheStatEntries autotuned to %d\n", rn,
                   cacheStatEntries);
    }

#if !defined(AFS_CACHE_VNODE_PATH) && !defined(AFS_LINUX26_ENV)
    /*
     * Create and zero the inode table for the desired cache files.
     */
    inode_for_V = calloc(cacheFiles, sizeof(AFSD_INO_T));
    if (inode_for_V == (AFSD_INO_T *) 0) {
        printf
            ("%s: malloc() failed for cache file inode table with %d entries.\n",
             rn, cacheFiles);
        exit(1);
    }
    if (afsd_debug)
        printf("%s: %d inode_for_V entries at %p, %lu bytes\n", rn,
               cacheFiles, inode_for_V,
               (unsigned long)cacheFiles * sizeof(AFSD_INO_T));
#endif

    if (!(cacheFlags & AFSCALL_INIT_MEMCACHE)) {
        /*
         * Set up all the pathnames we'll need for later.
         */
        sprintf(fullpn_DCacheFile, "%s/%s", cacheBaseDir, DCACHEFILE);
        sprintf(fullpn_VolInfoFile, "%s/%s", cacheBaseDir, VOLINFOFILE);
        sprintf(fullpn_CellInfoFile, "%s/%s", cacheBaseDir, CELLINFOFILE);
        sprintf(fullpn_VFile, "%s/", cacheBaseDir);
        vFilePtr = fullpn_VFile + strlen(fullpn_VFile);

        fsTypeMsg = CheckCacheBaseDir(cacheBaseDir);
        if (fsTypeMsg) {
#ifdef AFS_SUN5_ENV
            printf("%s: WARNING: Cache dir check failed (%s)\n", rn, fsTypeMsg);
#else
            printf("%s: ERROR: Cache dir check failed (%s)\n", rn, fsTypeMsg);
            exit(1);
#endif
        }
    }

    /*
     * Set up all the kernel processes needed for AFS.
     */
#ifdef mac2
    setpgrp(getpid(), 0);
#endif /* mac2 */

    /*
     * Set the primary cell name.
     */
    afsd_syscall(AFSOP_SET_THISCELL, LclCellName);

    /* Initialize RX daemons and services */

    /* initialize the rx random number generator from user space */
    {
        /* rand-fortuna wants at least 128 bytes of seed; be generous. */
        unsigned char seedbuf[256];
        if (RAND_bytes(seedbuf, sizeof(seedbuf)) != 1) {
            printf("SEED_ENTROPY: Error retrieving seed entropy\n");
        }
        afsd_syscall(AFSOP_SEED_ENTROPY, seedbuf, sizeof(seedbuf));
        memset(seedbuf, 0, sizeof(seedbuf));
        /* parse multihomed address files */
        afs_uint32 addrbuf[MAXIPADDRS], maskbuf[MAXIPADDRS],
            mtubuf[MAXIPADDRS];
        char reason[1024];
        code = afsconf_ParseNetFiles(addrbuf, maskbuf, mtubuf, MAXIPADDRS, reason,
                                     AFSDIR_CLIENT_NETINFO_FILEPATH,
                                     AFSDIR_CLIENT_NETRESTRICT_FILEPATH);
        if (code > 0) {
            if (enable_rxbind)
                code = code | 0x80000000;
            afsd_syscall(AFSOP_ADVISEADDR, code, addrbuf, maskbuf, mtubuf);
        } else
            printf("ADVISEADDR: Error in specifying interface addresses:%s\n",
                   reason);
    }

    /* Set realtime priority for most threads to same as for biod's. */
    afsd_set_afsd_rtpri();

    /* Start listener, then callback listener. Lastly, start rx event daemon.
     * Change in ordering is so that Linux port has socket fd in listener
     * process.
     * preallocs are passed for both listener and callback server. Only
     * the one which actually does the initialization uses them though.
     */
    if (preallocs < cacheStatEntries + 50)
        preallocs = cacheStatEntries + 50;
#ifdef RXK_LISTENER_ENV
    if (afsd_verbose)
        printf("%s: Forking rx listener daemon.\n", rn);
# ifdef AFS_SUN510_ENV
    fork_rx_syscall_wait(rn, AFSOP_RXLISTENER_DAEMON, preallocs,
                         enable_peer_stats, enable_process_stats);
# else /* !AFS_SUN510_ENV */
    fork_rx_syscall(rn, AFSOP_RXLISTENER_DAEMON, preallocs, enable_peer_stats,
                    enable_process_stats);
# endif /* !AFS_SUN510_ENV */
#endif
    if (afsd_verbose)
        printf("%s: Forking rx callback listener.\n", rn);
#ifndef RXK_LISTENER_ENV
    fork_rx_syscall(rn, AFSOP_START_RXCALLBACK, preallocs, enable_peer_stats,
                    enable_process_stats);
#else
    fork_syscall(rn, AFSOP_START_RXCALLBACK, preallocs, 0, 0);
#endif
#if defined(AFS_SUN5_ENV) || defined(RXK_LISTENER_ENV) || defined(RXK_UPCALL_ENV)
    if (afsd_verbose)
        printf("%s: Forking rxevent daemon.\n", rn);
    fork_rx_syscall(rn, AFSOP_RXEVENT_DAEMON);
#endif

    if (enable_afsdb) {
        if (afsd_verbose)
            printf("%s: Forking AFSDB lookup handler.\n", rn);
        afsd_fork(0, afsdb_thread, NULL);
    }
    code = afsd_syscall(AFSOP_BASIC_INIT, 1);
    if (code) {
        printf("%s: Error %d in basic initialization.\n", rn, code);
        exit(1);
    }

    /*
     * Tell the kernel some basic information about the workstation's cache.
     */
    if (afsd_verbose)
        printf
            ("%s: Calling AFSOP_CACHEINIT: %d stat cache entries, %d optimum cache files, %d blocks in the cache, flags = 0x%x, dcache entries %d\n",
             rn, cacheStatEntries, cacheFiles, cacheBlocks, cacheFlags,
             dCacheSize);
    memset(&cparams, '\0', sizeof(cparams));
    cparams.cacheScaches = cacheStatEntries;
    cparams.cacheFiles = cacheFiles;
    cparams.cacheBlocks = cacheBlocks;
    cparams.cacheDcaches = dCacheSize;
    cparams.cacheVolumes = vCacheSize;
    cparams.chunkSize = chunkSize;
    cparams.setTimeFlag = 0;
    cparams.memCacheFlag = cacheFlags;
    cparams.dynamic_vcaches = afsd_dynamic_vcaches;
    afsd_syscall(AFSOP_CACHEINIT, &cparams);

    /* do it before we init the cache inodes */
    if (enable_splitcache) {
        afsd_syscall(AFSOP_BUCKETPCT, 1, rwpct);
        afsd_syscall(AFSOP_BUCKETPCT, 2, ropct);
    }

    if (afsd_CloseSynch)
        afsd_syscall(AFSOP_CLOSEWAIT);

    /*
     * Sweep the workstation AFS cache directory, remembering the inodes of
     * valid files and deleting extraneous files.  Keep sweeping until we
     * have the right number of data cache files or we've swept too many
     * times.
     *
     * This also creates files in the cache directory like VolumeItems and
     * CellItems, and thus must be ran before those are sent to the kernel.
     */
    if (afsd_verbose)
        printf("%s: Sweeping workstation's AFS cache directory.\n", rn);
    cacheIteration = 0;
    /* Memory-cache based system doesn't need any of this */
    if (!(cacheFlags & AFSCALL_INIT_MEMCACHE)) {
        do {
            cacheIteration++;
            if (SweepAFSCache(&vFilesFound)) {
                printf("%s: Error on sweep %d of workstation AFS cache \
                       directory.\n", rn, cacheIteration);
                exit(1);
            }
            if (afsd_verbose)
                printf
                    ("%s: %d out of %d data cache files found in sweep %d.\n",
                     rn, vFilesFound, cacheFiles, cacheIteration);
        } while ((vFilesFound < cacheFiles)
                 && (cacheIteration < MAX_CACHE_LOOPS));
    } else if (afsd_verbose)
        printf("%s: Using memory cache, not swept\n", rn);

    /*
     * Pass the kernel the name of the workstation cache file holding the
     * dcache entries.
     */
    if (afsd_debug)
        printf("%s: Calling AFSOP_CACHEINFO: dcache file is '%s'\n", rn,
               fullpn_DCacheFile);
    /* once again, meaningless for a memory-based cache. */
    if (!(cacheFlags & AFSCALL_INIT_MEMCACHE))
        afsd_syscall(AFSOP_CACHEINFO, fullpn_DCacheFile);

    /*
     * Pass the kernel the name of the workstation cache file holding the
     * cell information.
     */
    if (!(cacheFlags & AFSCALL_INIT_MEMCACHE)) {
        if (afsd_debug)
            printf("%s: Calling AFSOP_CELLINFO: cell info file is '%s'\n", rn,
                   fullpn_CellInfoFile);
        afsd_syscall(AFSOP_CELLINFO, fullpn_CellInfoFile);
    }

    if (rxmaxfrags) {
        if (afsd_verbose)
            printf("%s: Setting rxmaxfrags in kernel = %d\n", rn, rxmaxfrags);
        code = afsd_syscall(AFSOP_SET_RXMAXFRAGS, rxmaxfrags);
        if (code)
            printf("%s: Error seting rxmaxfrags\n", rn);
    }

    if (rxmaxmtu) {
        if (afsd_verbose)
            printf("%s: Setting rxmaxmtu in kernel = %d\n", rn, rxmaxmtu);
        code = afsd_syscall(AFSOP_SET_RXMAXMTU, rxmaxmtu);
        if (code)
            printf("%s: Error seting rxmaxmtu\n", rn);
    }

    if (inumcalc != NULL) {
        if (strcmp(inumcalc, "compat") == 0) {
            if (afsd_verbose) {
                printf("%s: Setting original inode number calculation method in kernel.\n",
                       rn);
            }
            code = afsd_syscall(AFSOP_SET_INUMCALC, AFS_INUMCALC_COMPAT);
            if (code) {
                printf("%s: Error setting inode calculation method: code=%d.\n",
                       rn, code);
            }
        } else if (strcmp(inumcalc, "md5") == 0) {
            if (afsd_verbose) {
                printf("%s: Setting md5 digest inode number calculation in kernel.\n",
                       rn);
            }
            code = afsd_syscall(AFSOP_SET_INUMCALC, AFS_INUMCALC_MD5);
            if (code) {
                printf("%s: Error setting inode calculation method: code=%d.\n",
                       rn, code);
            }
        } else {
            printf("%s: Unknown value for -inumcalc: %s."
                   "Using default inode calculation method.\n", rn, inumcalc);
        }
    }

    if (enable_dynroot) {
        if (afsd_verbose)
            printf("%s: Enabling dynroot support in kernel%s.\n", rn,
                   (enable_dynroot==2)?", not showing cells.":"");
        code = afsd_syscall(AFSOP_SET_DYNROOT, 1);
        if (code)
            printf("%s: Error enabling dynroot support.\n", rn);
    }

    if (enable_fakestat) {
        if (afsd_verbose)
            printf("%s: Enabling fakestat support in kernel%s.\n", rn,
                   (enable_fakestat==1)?" for all mountpoints."
                   :" for crosscell mountpoints");
        code = afsd_syscall(AFSOP_SET_FAKESTAT, enable_fakestat);
        if (code)
            printf("%s: Error enabling fakestat support.\n", rn);
    }

    if (enable_backuptree) {
        if (afsd_verbose)
            printf("%s: Enabling backup tree support in kernel.\n", rn);
        code = afsd_syscall(AFSOP_SET_BACKUPTREE, enable_backuptree);
        if (code)
            printf("%s: Error enabling backup tree support.\n", rn);
    }

    /*
     * Tell the kernel about each cell in the configuration.
     */
    afsconf_CellApply(cdir, ConfigCell, NULL);
    afsconf_CellAliasApply(cdir, ConfigCellAlias, NULL);

    /* Initialize AFS daemon threads. */
    if (afsd_verbose)
        printf("%s: Forking AFS daemon.\n", rn);
    fork_syscall(rn, AFSOP_START_AFS);

    if (afsd_verbose)
        printf("%s: Forking Check Server Daemon.\n", rn);
    fork_syscall(rn, AFSOP_START_CS);

    if (afsd_verbose)
        printf("%s: Forking %d background daemons.\n", rn, nDaemons);
#if defined(AFS_SGI_ENV) && defined(AFS_SGI_SHORTSTACK)
    /* Add one because for sgi we always "steal" the first daemon for a
     * different task if we only have a 4K stack.
     */
    nDaemons++;
#endif
    for (i = 0; i < nDaemons; i++) {
        afsd_fork(0, daemon_thread, NULL);
    }
#ifdef  AFS_AIX32_ENV
    if (!sawBiod)
        nBiods = nDaemons * 2;
    if (nBiods < 5)
        nBiods = 5;
    for (i = 0; i < nBiods; i++) {
        fork_syscall(rn, AFSOP_START_BKG, nBiods);
    }
#endif

    /*
     * If the root volume has been explicitly set, tell the kernel.
     */
    if (rootVolSet) {
        if (afsd_verbose)
            printf("%s: Calling AFSOP_ROOTVOLUME with '%s'\n", rn,
                   rootVolume);
        afsd_syscall(AFSOP_ROOTVOLUME, rootVolume);
    }

    if (volume_ttl != 0) {
        if (afsd_verbose)
            printf("%s: Calling AFSOP_SET_VOLUME_TTL with '%d'\n", rn, volume_ttl);
        code = afsd_syscall(AFSOP_SET_VOLUME_TTL, volume_ttl);
        if (code != 0)
            printf("%s: Error setting volume ttl to %d seconds; code=%d.\n", rn, volume_ttl, code);
    }

    /*
     * Pass the kernel the name of the workstation cache file holding the
     * volume information.
     */
    if (afsd_debug)
        printf("%s: Calling AFSOP_VOLUMEINFO: volume info file is '%s'\n", rn,
               fullpn_VolInfoFile);
    /* once again, meaningless for a memory-based cache. */
    if (!(cacheFlags & AFSCALL_INIT_MEMCACHE))
        afsd_syscall(AFSOP_VOLUMEINFO, fullpn_VolInfoFile);

    /*
     * Give the kernel the names of the AFS files cached on the workstation's
     * disk.
     */
    if (!(cacheFlags & AFSCALL_INIT_MEMCACHE)) {
        int nocachefile = 0;
        if (afsd_debug)
            printf
                ("%s: Calling AFSOP_CACHEFILE for each of the %d files in '%s'\n",
                 rn, cacheFiles, cacheBaseDir);
        /* ... and again ... */
        for (currVFile = 0; currVFile < cacheFiles; currVFile++) {
            if (!nocachefile) {
                sprintf(fullpn_VFile, "%s/D%d/V%d", cacheBaseDir, dir_for_V[currVFile], currVFile);
                code = afsd_syscall(AFSOP_CACHEFILE, fullpn_VFile);
                if (code) {
                    if (currVFile == 0) {
                        if (afsd_debug)
                            printf
                                ("%s: Calling AFSOP_CACHEINODE for each of the %d files in '%s'\n",
                                 rn, cacheFiles, cacheBaseDir);
                        nocachefile = 1;
                    } else {
                        printf
                            ("%s: Error calling AFSOP_CACHEFILE for '%s'\n",
                             rn, fullpn_VFile);
                        exit(1);
                    }
                } else {
                    continue;
                }
                /* fall through to setup-by-inode */
            }
#if defined(AFS_SGI62_ENV) || !(defined(AFS_LINUX26_ENV) || defined(AFS_CACHE_VNODE_PATH))
            afsd_syscall(AFSOP_CACHEINODE, inode_for_V[currVFile]);
#else
            printf
                ("%s: Error calling AFSOP_CACHEINODE: not configured\n",
                 rn);
            exit(1);
#endif
        }
    }
    /*end for */
    /*
     * All the necessary info has been passed into the kernel to run an AFS
     * system.  Give the kernel our go-ahead.
     */
    if (afsd_debug)
        printf("%s: Calling AFSOP_GO with cacheSetTime = %d\n", rn,
               0);
    afsd_syscall(AFSOP_GO, 0);

    /*
     * At this point, we have finished passing the kernel all the info
     * it needs to set up the AFS.  Mount the AFS root.
     */
    printf("%s: All AFS daemons started.\n", rn);

    if (afsd_verbose)
        printf("%s: Forking trunc-cache daemon.\n", rn);
    fork_syscall(rn, AFSOP_START_TRUNCDAEMON);

    if (!enable_nomount) {
        afsd_mount_afs(rn, afsd_cacheMountDir);
    }

#ifndef UKERNEL
    if (afsd_rmtsys) {
        if (afsd_verbose)
            printf("%s: Forking 'rmtsys' daemon.\n", rn);
        afsd_fork(0, rmtsysd_thread, NULL);
        code = afsd_syscall(AFSOP_SET_RMTSYS_FLAG, 1);
        if (code)
            printf("%s: Error enabling rmtsys support.\n", rn);
    }
#endif /* !UKERNEL */
    /*
     * Exit successfully.
     */
    return 0;
}

#ifndef UKERNEL
#include "AFS_component_version_number.c"
#endif

void
afsd_init(void)
{
    struct cmd_syndesc *ts;

    ts = cmd_CreateSyntax(NULL, NULL, NULL, 0, "start AFS");

    /* 0 - 10 */
    cmd_AddParmAtOffset(ts, OPT_blocks, "-blocks", CMD_SINGLE,
                        CMD_OPTIONAL, "1024 byte blocks in cache");
    cmd_AddParmAtOffset(ts, OPT_files, "-files", CMD_SINGLE,
                        CMD_OPTIONAL, "files in cache");
    cmd_AddParmAtOffset(ts, OPT_rootvol, "-rootvol", CMD_SINGLE,
                        CMD_OPTIONAL, "name of AFS root volume");
    cmd_AddParmAtOffset(ts, OPT_stat, "-stat", CMD_SINGLE,
                        CMD_OPTIONAL, "number of stat entries");
    cmd_AddParmAtOffset(ts, OPT_memcache, "-memcache", CMD_FLAG,
                        CMD_OPTIONAL, "run diskless");
    cmd_AddParmAtOffset(ts, OPT_cachedir, "-cachedir", CMD_SINGLE,
                        CMD_OPTIONAL, "cache directory");
    cmd_AddParmAtOffset(ts, OPT_mountdir, "-mountdir", CMD_SINGLE,
                        CMD_OPTIONAL, "mount location");
    cmd_AddParmAtOffset(ts, OPT_daemons, "-daemons", CMD_SINGLE,
                        CMD_OPTIONAL, "number of daemons to use");
    cmd_AddParmAtOffset(ts, OPT_nosettime, "-nosettime", CMD_FLAG,
                        CMD_OPTIONAL, "don't set the time");
    cmd_AddParmAtOffset(ts, OPT_verbose, "-verbose", CMD_FLAG,
                        CMD_OPTIONAL, "display lots of information");
    cmd_AddParmAtOffset(ts, OPT_rmtsys, "-rmtsys", CMD_FLAG,
                        CMD_OPTIONAL, "start NFS rmtsysd program");
    cmd_AddParmAtOffset(ts, OPT_debug, "-debug", CMD_FLAG,
                        CMD_OPTIONAL, "display debug info");
    cmd_AddParmAtOffset(ts, OPT_chunksize, "-chunksize", CMD_SINGLE,
                        CMD_OPTIONAL, "log(2) of chunk size");
    cmd_AddParmAtOffset(ts, OPT_dcache, "-dcache", CMD_SINGLE,
                        CMD_OPTIONAL, "number of dcache entries");
    cmd_AddParmAtOffset(ts, OPT_volumes, "-volumes", CMD_SINGLE,
                        CMD_OPTIONAL, "number of volume entries");
    cmd_AddParmAtOffset(ts, OPT_biods, "-biods", CMD_SINGLE,
                        CMD_OPTIONAL, "number of bkg I/O daemons (aix vm)");
    cmd_AddParmAtOffset(ts, OPT_prealloc, "-prealloc", CMD_SINGLE,
                        CMD_OPTIONAL, "number of 'small' preallocated blocks");
    cmd_AddParmAtOffset(ts, OPT_confdir, "-confdir", CMD_SINGLE,
                        CMD_OPTIONAL, "configuration directory");
    cmd_AddParmAtOffset(ts, OPT_logfile, "-logfile", CMD_SINGLE,
                        CMD_OPTIONAL, "Place to keep the CM log");
    cmd_AddParmAtOffset(ts, OPT_waitclose, "-waitclose", CMD_FLAG,
                        CMD_OPTIONAL, "make close calls synchronous");
    cmd_AddParmAtOffset(ts, OPT_shutdown, "-shutdown", CMD_FLAG,
                        CMD_OPTIONAL, "Shutdown all afs state");
    cmd_AddParmAtOffset(ts, OPT_peerstats, "-enable_peer_stats", CMD_FLAG,
                        CMD_OPTIONAL, "Collect rpc statistics by peer");
    cmd_AddParmAtOffset(ts, OPT_processstats, "-enable_process_stats",
                        CMD_FLAG, CMD_OPTIONAL, "Collect rpc statistics for this process");
    cmd_AddParmAtOffset(ts, OPT_memallocsleep, "-mem_alloc_sleep",
                        CMD_FLAG, CMD_OPTIONAL | CMD_HIDE,
                        "Allow sleeps when allocating memory cache");
    cmd_AddParmAtOffset(ts, OPT_afsdb, "-afsdb", CMD_FLAG,
                        CMD_OPTIONAL, "Enable AFSDB support");
    cmd_AddParmAtOffset(ts, OPT_filesdir, "-files_per_subdir", CMD_SINGLE,
                        CMD_OPTIONAL,
                        "log(2) of the number of cache files per "
                        "cache subdirectory");
    cmd_AddParmAtOffset(ts, OPT_dynroot, "-dynroot", CMD_FLAG,
                        CMD_OPTIONAL, "Enable dynroot support");
    cmd_AddParmAtOffset(ts, OPT_fakestat, "-fakestat", CMD_FLAG,
                        CMD_OPTIONAL,
                        "Enable fakestat support for cross-cell mounts");
    cmd_AddParmAtOffset(ts, OPT_fakestatall, "-fakestat-all", CMD_FLAG,
                        CMD_OPTIONAL,
                        "Enable fakestat support for all mounts");
    cmd_AddParmAtOffset(ts, OPT_nomount, "-nomount", CMD_FLAG,
                        CMD_OPTIONAL, "Do not mount AFS");
    cmd_AddParmAtOffset(ts, OPT_backuptree, "-backuptree", CMD_FLAG,
                        CMD_OPTIONAL,
                        "Prefer backup volumes for mountpoints in backup "
                        "volumes");
    cmd_AddParmAtOffset(ts, OPT_rxbind, "-rxbind", CMD_FLAG,
                        CMD_OPTIONAL,
                        "Bind the Rx socket (one interface only)");
    cmd_AddParmAtOffset(ts, OPT_settime, "-settime", CMD_FLAG,
                        CMD_OPTIONAL, "set the time");
    cmd_AddParmAtOffset(ts, OPT_rxpck, "-rxpck", CMD_SINGLE, CMD_OPTIONAL,
                        "set rx_extraPackets to this value");
    cmd_AddParmAtOffset(ts, OPT_splitcache, "-splitcache", CMD_SINGLE,
                        CMD_OPTIONAL,
                        "Percentage RW versus RO in cache (specify as 60/40)");
    cmd_AddParmAtOffset(ts, OPT_nodynvcache, "-disable-dynamic-vcaches",
                        CMD_FLAG, CMD_OPTIONAL,
                        "disable stat/vcache cache growing as needed");
    cmd_AddParmAtOffset(ts, OPT_rxmaxmtu, "-rxmaxmtu", CMD_SINGLE,
                        CMD_OPTIONAL, "set rx max MTU to use");
    cmd_AddParmAtOffset(ts, OPT_dynrootsparse, "-dynroot-sparse", CMD_FLAG,
                        CMD_OPTIONAL,
                        "Enable dynroot support with minimal cell list");
    cmd_AddParmAtOffset(ts, OPT_rxmaxfrags, "-rxmaxfrags", CMD_SINGLE,
                        CMD_OPTIONAL,
                        "Set the maximum number of UDP fragments Rx should "
                        "send/receive per Rx packet");
    cmd_AddParmAtOffset(ts, OPT_inumcalc, "-inumcalc", CMD_SINGLE, CMD_OPTIONAL,
                        "Set inode number calculation method");
    cmd_AddParmAtOffset(ts, OPT_volume_ttl, "-volume-ttl", CMD_SINGLE,
                        CMD_OPTIONAL,
                        "Set the vldb cache timeout value in seconds.");
}

/**
 * Parse and check the command line options.
 *
 * @note The -shutdown command is handled in CheckOptions().
 */
int
afsd_parse(int argc, char **argv)
{
    struct cmd_syndesc *ts = NULL;
    int code;

    code = cmd_Parse(argc, argv, &ts);
    if (code) {
        return code;
    }
    code = CheckOptions(ts);
    cmd_FreeOptions(&ts);
    return code;
}

/**
 * entry point for calling a syscall from another proc/thread.
 *
 * @param[in] rock  a struct afsd_syscall_args* specifying what syscall to call
 *
 * @return unused
 *   @retval NULL always
 */
static void *
call_syscall_thread(void *rock)
{
    struct afsd_syscall_args *args = rock;
    int code;

    if (args->rxpri) {
        afsd_set_rx_rtpri();
    }

    code = afsd_call_syscall(args);
    if (code && args->syscall == AFSOP_START_CS) {
        printf("%s: No check server daemon in client.\n", args->rn);
    }

    free(args);

    return NULL;
}

static void
afsd_syscall_populate(struct afsd_syscall_args *args, int syscall, va_list ap)
{
    afsd_syscall_param_t *params;

    memset(args, 0, sizeof(struct afsd_syscall_args));

    args->syscall = syscall;
    params = args->params;

    switch (syscall) {
    case AFSOP_RXEVENT_DAEMON:
    case AFSOP_CLOSEWAIT:
    case AFSOP_START_AFS:
    case AFSOP_START_CS:
    case AFSOP_START_TRUNCDAEMON:
        break;
    case AFSOP_START_BKG:
    case AFSOP_SHUTDOWN:
    case AFSOP_SET_RXPCK:
    case AFSOP_BASIC_INIT:
    case AFSOP_SET_RXMAXFRAGS:
    case AFSOP_SET_RXMAXMTU:
    case AFSOP_SET_DYNROOT:
    case AFSOP_SET_FAKESTAT:
    case AFSOP_SET_BACKUPTREE:
    case AFSOP_BUCKETPCT:
    case AFSOP_GO:
    case AFSOP_SET_RMTSYS_FLAG:
    case AFSOP_SET_INUMCALC:
    case AFSOP_SET_VOLUME_TTL:
        params[0] = CAST_SYSCALL_PARAM((va_arg(ap, int)));
        break;
    case AFSOP_SET_THISCELL:
    case AFSOP_ROOTVOLUME:
    case AFSOP_VOLUMEINFO:
    case AFSOP_CACHEFILE:
    case AFSOP_CACHEINFO:
    case AFSOP_CACHEINIT:
    case AFSOP_CELLINFO:
        params[0] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
        break;
    case AFSOP_ADDCELLALIAS:
        params[0] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
        params[1] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
        break;
    case AFSOP_AFSDB_HANDLER:
        params[0] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
        params[1] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
        params[2] = CAST_SYSCALL_PARAM((va_arg(ap, int)));
        break;
    case AFSOP_BKG_HANDLER:
        params[0] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
        params[1] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
        params[2] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
        break;
    case AFSOP_RXLISTENER_DAEMON:
    case AFSOP_START_RXCALLBACK:
        params[0] = CAST_SYSCALL_PARAM((va_arg(ap, int)));
        params[1] = CAST_SYSCALL_PARAM((va_arg(ap, int)));
        params[2] = CAST_SYSCALL_PARAM((va_arg(ap, int)));
        break;
    case AFSOP_ADVISEADDR:
        params[0] = CAST_SYSCALL_PARAM((va_arg(ap, int)));
        params[1] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
        params[2] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
        params[3] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
        break;
    case AFSOP_ADDCELL2:
        params[0] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
        params[1] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
        params[2] = CAST_SYSCALL_PARAM((va_arg(ap, afs_int32)));
        params[3] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
        break;
    case AFSOP_CACHEINODE:
#if defined AFS_SGI62_ENV
        {
            afs_int64 tmp = va_arg(ap, afs_int64);
            params[0] = CAST_SYSCALL_PARAM((afs_uint32)(tmp >> 32));
            params[1] = CAST_SYSCALL_PARAM((afs_uint32)(tmp & 0xffffffff));
        }
#else
        params[0] = CAST_SYSCALL_PARAM((va_arg(ap, afs_uint32)));
#endif
        break;
    case AFSOP_SEED_ENTROPY:
        params[0] = CAST_SYSCALL_PARAM((va_arg(ap, void *)));
        params[1] = CAST_SYSCALL_PARAM((va_arg(ap, afs_uint32)));
        break;
    default:
        printf("Unknown syscall enountered: %d\n", syscall);
        opr_Assert(0);
    }
}

/**
 * common code for calling a syscall in another proc/thread.
 *
 * @param[in] rx   1 if this is a thread for RX stuff, 0 otherwise
 * @param[in] wait 1 if we should wait for the new proc/thread to finish, 0 to
 *                 let it run in the background
 * @param[in] rn   the name of the running program
 * @param[in] syscall syscall to run
 */
static void
fork_syscall_impl(int rx, int wait, const char *rn, int syscall, va_list ap)
{
    struct afsd_syscall_args *args;

    args = malloc(sizeof(*args));
    afsd_syscall_populate(args, syscall, ap);
    args->rxpri = rx;
    args->rn = rn;

    afsd_fork(wait, call_syscall_thread, args);
}

/**
 * call a syscall in another process or thread.
 */
static void
fork_syscall(const char *rn, int syscall, ...)
{
    va_list ap;

    va_start(ap, syscall);
    fork_syscall_impl(0, 0, rn, syscall, ap);
    va_end(ap);
}

/**
 * call a syscall in another process or thread, and give it RX priority.
 */
static void
fork_rx_syscall(const char *rn, int syscall, ...)
{
    va_list ap;

    va_start(ap, syscall);
    fork_syscall_impl(1, 0, rn, syscall, ap);
    va_end(ap);
}

#if defined(AFS_SUN510_ENV) && defined(RXK_LISTENER_ENV)
/**
 * call a syscall in another process or thread, give it RX priority, and wait
 * for it to finish before returning.
 */
static void
fork_rx_syscall_wait(const char *rn, int syscall, ...)
{
    va_list ap;

    va_start(ap, syscall);
    fork_syscall_impl(1, 1, rn, syscall, ap);
    va_end(ap);
}
#endif /* AFS_SUN510_ENV && RXK_LISTENER_ENV */

static int
afsd_syscall(int syscall, ...)
{
    va_list ap;
    struct afsd_syscall_args args;

    va_start(ap, syscall);
    afsd_syscall_populate(&args, syscall, ap);
    va_end(ap);

    return afsd_call_syscall(&args);
}