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rpmdb/dbconfig.c

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00001 
00005 #include "system.h"
00006 
00007 #include <rpmlib.h>
00008 #include <rpmmacro.h>
00009 
00010 #include "rpmdb.h"
00011 #include "debug.h"
00012 
00013 /*@access rpmdb@*/
00014 /*@access dbiIndex@*/
00015 /*@access dbiIndexSet@*/
00016 
00017 #if (DB_VERSION_MAJOR == 3) || (DB_VERSION_MAJOR == 4)
00018 #define __USE_DB3       1
00019 
00020 /*@-exportlocal -exportheadervar@*/
00021 /*@unchecked@*/
00022 struct _dbiIndex db3dbi;
00023 /*@=exportlocal =exportheadervar@*/
00024 
00025 /*@unchecked@*/
00026 static int dbi_use_cursors;
00027 
00028 /*@unchecked@*/
00029 static int dbi_tear_down;
00030 
00031 /*@-compmempass -immediatetrans -exportlocal -exportheadervar@*/
00034 /*@unchecked@*/
00035 struct poptOption rdbOptions[] = {
00036  /* XXX DB_CXX_NO_EXCEPTIONS */
00037  { "client",    0,POPT_BIT_SET, &db3dbi.dbi_ecflags, DB_CLIENT,
00038         NULL, NULL },
00039 
00040  { "xa_create", 0,POPT_BIT_SET, &db3dbi.dbi_cflags, DB_XA_CREATE,
00041         NULL, NULL },
00042 
00043  { "create",    0,POPT_BIT_SET, &db3dbi.dbi_oeflags, DB_CREATE,
00044         NULL, NULL },
00045  { "thread",    0,POPT_BIT_SET, &db3dbi.dbi_oeflags, DB_THREAD,
00046         NULL, NULL },
00047 
00048  { "force",     0,POPT_BIT_SET, &db3dbi.dbi_eflags, DB_FORCE,
00049         NULL, NULL },
00050  { "cdb",       0,POPT_BIT_SET, &db3dbi.dbi_eflags, DB_INIT_CDB,
00051         NULL, NULL },
00052  { "lock",      0,POPT_BIT_SET, &db3dbi.dbi_eflags, DB_INIT_LOCK,
00053         NULL, NULL },
00054  { "log",       0,POPT_BIT_SET, &db3dbi.dbi_eflags, DB_INIT_LOG,
00055         NULL, NULL },
00056  { "mpool",     0,POPT_BIT_SET, &db3dbi.dbi_eflags, DB_INIT_MPOOL,
00057         NULL, NULL },
00058  { "txn",       0,POPT_BIT_SET, &db3dbi.dbi_eflags, DB_INIT_TXN,
00059         NULL, NULL },
00060  { "joinenv",   0,POPT_BIT_SET, &db3dbi.dbi_eflags, DB_JOINENV,
00061         NULL, NULL },
00062  { "recover",   0,POPT_BIT_SET, &db3dbi.dbi_eflags, DB_RECOVER,
00063         NULL, NULL },
00064  { "recover_fatal", 0,POPT_BIT_SET,     &db3dbi.dbi_eflags, DB_RECOVER_FATAL,
00065         NULL, NULL },
00066  { "shared",    0,POPT_BIT_SET, &db3dbi.dbi_eflags, DB_SYSTEM_MEM,
00067         NULL, NULL },
00068  { "txn_nosync", 0,POPT_BIT_SET,        &db3dbi.dbi_eflags, DB_TXN_NOSYNC,
00069         NULL, NULL },
00070  { "use_environ_root", 0,POPT_BIT_SET,  &db3dbi.dbi_eflags, DB_USE_ENVIRON_ROOT,
00071         NULL, NULL },
00072  { "use_environ", 0,POPT_BIT_SET,       &db3dbi.dbi_eflags, DB_USE_ENVIRON,
00073         NULL, NULL },
00074  { "lockdown",  0,POPT_BIT_SET, &db3dbi.dbi_eflags, DB_LOCKDOWN,
00075         NULL, NULL },
00076  { "private",   0,POPT_BIT_SET, &db3dbi.dbi_eflags, DB_PRIVATE,
00077         NULL, NULL },
00078 
00079  { "txn_sync",  0,POPT_BIT_SET, &db3dbi.dbi_tflags, DB_TXN_SYNC,
00080         NULL, NULL },
00081  { "txn_nowait",0,POPT_BIT_SET, &db3dbi.dbi_tflags, DB_TXN_NOWAIT,
00082         NULL, NULL },
00083 
00084  { "excl",      0,POPT_BIT_SET, &db3dbi.dbi_oflags, DB_EXCL,
00085         NULL, NULL },
00086  { "nommap",    0,POPT_BIT_SET, &db3dbi.dbi_oflags, DB_NOMMAP,
00087         NULL, NULL },
00088  { "rdonly",    0,POPT_BIT_SET, &db3dbi.dbi_oflags, DB_RDONLY,
00089         NULL, NULL },
00090  { "truncate",  0,POPT_BIT_SET, &db3dbi.dbi_oflags, DB_TRUNCATE,
00091         NULL, NULL },
00092  { "fcntl_locking",0,POPT_BIT_SET,      &db3dbi.dbi_oflags, DB_FCNTL_LOCKING,
00093         NULL, NULL },
00094 
00095  { "btree",     0,POPT_ARG_VAL,         &db3dbi.dbi_type, DB_BTREE,
00096         NULL, NULL },
00097  { "hash",      0,POPT_ARG_VAL,         &db3dbi.dbi_type, DB_HASH,
00098         NULL, NULL },
00099  { "recno",     0,POPT_ARG_VAL,         &db3dbi.dbi_type, DB_RECNO,
00100         NULL, NULL },
00101  { "queue",     0,POPT_ARG_VAL,         &db3dbi.dbi_type, DB_QUEUE,
00102         NULL, NULL },
00103  { "unknown",   0,POPT_ARG_VAL,         &db3dbi.dbi_type, DB_UNKNOWN,
00104         NULL, NULL },
00105 
00106  { "root",      0,POPT_ARG_STRING,      &db3dbi.dbi_root, 0,
00107         NULL, NULL },
00108  { "home",      0,POPT_ARG_STRING,      &db3dbi.dbi_home, 0,
00109         NULL, NULL },
00110  { "file",      0,POPT_ARG_STRING,      &db3dbi.dbi_file, 0,
00111         NULL, NULL },
00112  { "subfile",   0,POPT_ARG_STRING,      &db3dbi.dbi_subfile, 0,
00113         NULL, NULL },
00114  { "mode",      0,POPT_ARG_INT,         &db3dbi.dbi_mode, 0,
00115         NULL, NULL },
00116  { "perms",     0,POPT_ARG_INT,         &db3dbi.dbi_perms, 0,
00117         NULL, NULL },
00118  { "shmkey",    0,POPT_ARG_LONG,        &db3dbi.dbi_shmkey, 0,
00119         NULL, NULL },
00120  { "tmpdir",    0,POPT_ARG_STRING,      &db3dbi.dbi_tmpdir, 0,
00121         NULL, NULL },
00122 
00123  { "host",      0,POPT_ARG_STRING,      &db3dbi.dbi_host, 0,
00124         NULL, NULL },
00125  { "server",    0,POPT_ARG_STRING,      &db3dbi.dbi_host, 0,
00126         NULL, NULL },
00127  { "cl_timeout", 0,POPT_ARG_LONG,       &db3dbi.dbi_cl_timeout, 0,
00128         NULL, NULL },
00129  { "sv_timeout", 0,POPT_ARG_LONG,       &db3dbi.dbi_sv_timeout, 0,
00130         NULL, NULL },
00131 
00132  { "verify",    0,POPT_ARG_NONE,        &db3dbi.dbi_verify_on_close, 0,
00133         NULL, NULL },
00134  { "teardown",  0,POPT_ARG_NONE,        &dbi_tear_down, 0,
00135         NULL, NULL },
00136  { "usecursors",0,POPT_ARG_NONE,        &dbi_use_cursors, 0,
00137         NULL, NULL },
00138  { "usedbenv",  0,POPT_ARG_NONE,        &db3dbi.dbi_use_dbenv, 0,
00139         NULL, NULL },
00140  { "nofsync",   0,POPT_ARG_NONE,        &db3dbi.dbi_no_fsync, 0,
00141         NULL, NULL },
00142  { "nodbsync",  0,POPT_ARG_NONE,        &db3dbi.dbi_no_dbsync, 0,
00143         NULL, NULL },
00144  { "lockdbfd",  0,POPT_ARG_NONE,        &db3dbi.dbi_lockdbfd, 0,
00145         NULL, NULL },
00146  { "temporary", 0,POPT_ARG_NONE,        &db3dbi.dbi_temporary, 0,
00147         NULL, NULL },
00148  { "debug",     0,POPT_ARG_NONE,        &db3dbi.dbi_debug, 0,
00149         NULL, NULL },
00150 
00151  { "cachesize", 0,POPT_ARG_INT,         &db3dbi.dbi_cachesize, 0,
00152         NULL, NULL },
00153  { "errpfx",    0,POPT_ARG_STRING,      &db3dbi.dbi_errpfx, 0,
00154         NULL, NULL },
00155  { "region_init", 0,POPT_ARG_VAL,       &db3dbi.dbi_region_init, 1,
00156         NULL, NULL },
00157  { "tas_spins", 0,POPT_ARG_INT,         &db3dbi.dbi_tas_spins, 0,
00158         NULL, NULL },
00159 
00160  { "chkpoint",  0,POPT_BIT_SET, &db3dbi.dbi_verbose, DB_VERB_CHKPOINT,
00161         NULL, NULL },
00162  { "deadlock",  0,POPT_BIT_SET, &db3dbi.dbi_verbose, DB_VERB_DEADLOCK,
00163         NULL, NULL },
00164  { "recovery",  0,POPT_BIT_SET, &db3dbi.dbi_verbose, DB_VERB_RECOVERY,
00165         NULL, NULL },
00166  { "waitsfor",  0,POPT_BIT_SET, &db3dbi.dbi_verbose, DB_VERB_WAITSFOR,
00167         NULL, NULL },
00168  { "verbose",   0,POPT_ARG_VAL,         &db3dbi.dbi_verbose, -1,
00169         NULL, NULL },
00170 
00171  { "lk_oldest", 0,POPT_ARG_VAL,         &db3dbi.dbi_lk_detect, DB_LOCK_OLDEST,
00172         NULL, NULL },
00173  { "lk_random", 0,POPT_ARG_VAL,         &db3dbi.dbi_lk_detect, DB_LOCK_RANDOM,
00174         NULL, NULL },
00175  { "lk_youngest",0, POPT_ARG_VAL,       &db3dbi.dbi_lk_detect, DB_LOCK_YOUNGEST,
00176         NULL, NULL },
00177 /* XXX lk_conflicts matrix */
00178  { "lk_max",    0,POPT_ARG_INT,         &db3dbi.dbi_lk_max, 0,
00179         NULL, NULL },
00180 
00181  { "lg_bsize",  0,POPT_ARG_INT,         &db3dbi.dbi_lg_bsize, 0,
00182         NULL, NULL },
00183  { "lg_max",    0,POPT_ARG_INT,         &db3dbi.dbi_lg_max, 0,
00184         NULL, NULL },
00185 
00186 /* XXX tx_recover */
00187  { "tx_max",    0,POPT_ARG_INT,         &db3dbi.dbi_tx_max, 0,
00188         NULL, NULL },
00189 
00190  { "lorder",    0,POPT_ARG_INT,         &db3dbi.dbi_lorder, 0,
00191         NULL, NULL },
00192 
00193  { "mp_mmapsize", 0,POPT_ARG_INT,       &db3dbi.dbi_mp_mmapsize, 0,
00194         NULL, NULL },
00195  { "mp_size",   0,POPT_ARG_INT,         &db3dbi.dbi_mp_size, 0,
00196         NULL, NULL },
00197  { "pagesize",  0,POPT_ARG_INT,         &db3dbi.dbi_pagesize, 0,
00198         NULL, NULL },
00199 
00200 /* XXX bt_minkey */
00201 /* XXX bt_compare */
00202 /* XXX bt_dup_compare */
00203 /* XXX bt_prefix */
00204  { "bt_dup",    0,POPT_BIT_SET, &db3dbi.dbi_bt_flags, DB_DUP,
00205         NULL, NULL },
00206  { "bt_dupsort",0,POPT_BIT_SET, &db3dbi.dbi_bt_flags, DB_DUPSORT,
00207         NULL, NULL },
00208  { "bt_recnum", 0,POPT_BIT_SET, &db3dbi.dbi_bt_flags, DB_RECNUM,
00209         NULL, NULL },
00210  { "bt_revsplitoff", 0,POPT_BIT_SET,    &db3dbi.dbi_bt_flags, DB_REVSPLITOFF,
00211         NULL, NULL },
00212 
00213  { "h_dup",     0,POPT_BIT_SET, &db3dbi.dbi_h_flags, DB_DUP,
00214         NULL, NULL },
00215  { "h_dupsort", 0,POPT_BIT_SET, &db3dbi.dbi_h_flags, DB_DUPSORT,
00216         NULL, NULL },
00217  { "h_ffactor", 0,POPT_ARG_INT,         &db3dbi.dbi_h_ffactor, 0,
00218         NULL, NULL },
00219  { "h_nelem",   0,POPT_ARG_INT,         &db3dbi.dbi_h_nelem, 0,
00220         NULL, NULL },
00221 
00222  { "re_renumber", 0,POPT_BIT_SET,       &db3dbi.dbi_re_flags, DB_RENUMBER,
00223         NULL, NULL },
00224  { "re_snapshot",0,POPT_BIT_SET,        &db3dbi.dbi_re_flags, DB_SNAPSHOT,
00225         NULL, NULL },
00226  { "re_delim",  0,POPT_ARG_INT,         &db3dbi.dbi_re_delim, 0,
00227         NULL, NULL },
00228  { "re_len",    0,POPT_ARG_INT,         &db3dbi.dbi_re_len, 0,
00229         NULL, NULL },
00230  { "re_pad",    0,POPT_ARG_INT,         &db3dbi.dbi_re_pad, 0,
00231         NULL, NULL },
00232  { "re_source", 0,POPT_ARG_STRING,      &db3dbi.dbi_re_source, 0,
00233         NULL, NULL },
00234 
00235  { "q_extentsize", 0,POPT_ARG_INT,      &db3dbi.dbi_q_extentsize, 0,
00236         NULL, NULL },
00237 
00238     POPT_TABLEEND
00239 };
00240 /*@=compmempass =immediatetrans =exportlocal =exportheadervar@*/
00241 
00242 dbiIndex db3Free(dbiIndex dbi)
00243 {
00244     if (dbi) {
00245         dbi->dbi_root = _free(dbi->dbi_root);
00246         dbi->dbi_home = _free(dbi->dbi_home);
00247         dbi->dbi_file = _free(dbi->dbi_file);
00248         dbi->dbi_subfile = _free(dbi->dbi_subfile);
00249         dbi->dbi_tmpdir = _free(dbi->dbi_tmpdir);
00250         dbi->dbi_host = _free(dbi->dbi_host);
00251         dbi->dbi_errpfx = _free(dbi->dbi_errpfx);
00252         dbi->dbi_re_source = _free(dbi->dbi_re_source);
00253         dbi->dbi_stats = _free(dbi->dbi_stats);
00254         dbi = _free(dbi);
00255     }
00256     return dbi;
00257 }
00258 
00260 /*@observer@*/ /*@unchecked@*/
00261 static const char *db3_config_default =
00262     "db3:hash:mpool:cdb:usecursors:verbose:mp_mmapsize=8Mb:mp_size=512Kb:pagesize=512:perms=0644";
00263 
00264 /*@-bounds@*/
00265 dbiIndex db3New(rpmdb rpmdb, rpmTag rpmtag)
00266 {
00267     dbiIndex dbi = xcalloc(1, sizeof(*dbi));
00268     char dbiTagMacro[128];
00269     char * dbOpts;
00270 
00271     sprintf(dbiTagMacro, "%%{_dbi_config_%s}", tagName(rpmtag));
00272     dbOpts = rpmExpand(dbiTagMacro, NULL);
00273     if (!(dbOpts && *dbOpts && *dbOpts != '%')) {
00274         dbOpts = _free(dbOpts);
00275         dbOpts = rpmExpand("%{_dbi_config}", NULL);
00276         if (!(dbOpts && *dbOpts && *dbOpts != '%')) {
00277             dbOpts = rpmExpand(db3_config_default, NULL);
00278         }
00279     }
00280 
00281     /* Parse the options for the database element(s). */
00282     /*@-branchstate@*/
00283     if (dbOpts && *dbOpts && *dbOpts != '%') {
00284         char *o, *oe;
00285         char *p, *pe;
00286 
00287         memset(&db3dbi, 0, sizeof(db3dbi));
00288 /*=========*/
00289         for (o = dbOpts; o && *o; o = oe) {
00290             struct poptOption *opt;
00291             const char * tok;
00292             int argInfo;
00293 
00294             /* Skip leading white space. */
00295             while (*o && xisspace(*o))
00296                 o++;
00297 
00298             /* Find and terminate next key=value pair. Save next start point. */
00299             for (oe = o; oe && *oe; oe++) {
00300                 if (xisspace(*oe))
00301                     /*@innerbreak@*/ break;
00302                 if (oe[0] == ':' && !(oe[1] == '/' && oe[2] == '/'))
00303                     /*@innerbreak@*/ break;
00304             }
00305             if (oe && *oe)
00306                 *oe++ = '\0';
00307             if (*o == '\0')
00308                 continue;
00309 
00310             /* Separate key from value, save value start (if any). */
00311             for (pe = o; pe && *pe && *pe != '='; pe++)
00312                 {};
00313             p = (pe ? *pe++ = '\0', pe : NULL);
00314 
00315             /* Skip over negation at start of token. */
00316             for (tok = o; *tok == '!'; tok++)
00317                 {};
00318 
00319             /* Find key in option table. */
00320             for (opt = rdbOptions; opt->longName != NULL; opt++) {
00321                 if (strcmp(tok, opt->longName))
00322                     /*@innercontinue@*/ continue;
00323                 /*@innerbreak@*/ break;
00324             }
00325             if (opt->longName == NULL) {
00326                 rpmError(RPMERR_DBCONFIG,
00327                         _("unrecognized db option: \"%s\" ignored.\n"), o);
00328                 continue;
00329             }
00330 
00331             /* Toggle the flags for negated tokens, if necessary. */
00332             argInfo = opt->argInfo;
00333             if (argInfo == POPT_BIT_SET && *o == '!' && ((tok - o) % 2))
00334                 argInfo = POPT_BIT_CLR;
00335 
00336             /* Save value in template as appropriate. */
00337             switch (argInfo & POPT_ARG_MASK) {
00338 
00339             case POPT_ARG_NONE:
00340                 (void) poptSaveInt((int *)opt->arg, argInfo, 1L);
00341                 /*@switchbreak@*/ break;
00342             case POPT_ARG_VAL:
00343                 (void) poptSaveInt((int *)opt->arg, argInfo, (long)opt->val);
00344                 /*@switchbreak@*/ break;
00345             case POPT_ARG_STRING:
00346             {   const char ** t = opt->arg;
00347                 /*@-mods@*/
00348                 if (t) {
00349 /*@-unqualifiedtrans@*/ /* FIX: opt->arg annotation in popt.h */
00350                     *t = _free(*t);
00351 /*@=unqualifiedtrans@*/
00352                     *t = xstrdup( (p ? p : "") );
00353                 }
00354                 /*@=mods@*/
00355             }   /*@switchbreak@*/ break;
00356 
00357             case POPT_ARG_INT:
00358             case POPT_ARG_LONG:
00359               { long aLong = strtol(p, &pe, 0);
00360                 if (pe) {
00361                     if (!xstrncasecmp(pe, "Mb", 2))
00362                         aLong *= 1024 * 1024;
00363                     else if (!xstrncasecmp(pe, "Kb", 2))
00364                         aLong *= 1024;
00365                     else if (*pe != '\0') {
00366                         rpmError(RPMERR_DBCONFIG,
00367                                 _("%s has invalid numeric value, skipped\n"),
00368                                 opt->longName);
00369                         continue;
00370                     }
00371                 }
00372 
00373                 if ((argInfo & POPT_ARG_MASK) == POPT_ARG_LONG) {
00374                     if (aLong == LONG_MIN || aLong == LONG_MAX) {
00375                         rpmError(RPMERR_DBCONFIG,
00376                                 _("%s has too large or too small long value, skipped\n"),
00377                                 opt->longName);
00378                         continue;
00379                     }
00380                     (void) poptSaveLong((long *)opt->arg, argInfo, aLong);
00381                     /*@switchbreak@*/ break;
00382                 } else {
00383                     if (aLong > INT_MAX || aLong < INT_MIN) {
00384                         rpmError(RPMERR_DBCONFIG,
00385                                 _("%s has too large or too small integer value, skipped\n"),
00386                                 opt->longName);
00387                         continue;
00388                     }
00389                     (void) poptSaveInt((int *)opt->arg, argInfo, aLong);
00390                 }
00391               } /*@switchbreak@*/ break;
00392             default:
00393                 /*@switchbreak@*/ break;
00394             }
00395         }
00396 /*=========*/
00397     }
00398     /*@=branchstate@*/
00399 
00400     dbOpts = _free(dbOpts);
00401 
00402     /*@-assignexpose@*/
00403 /*@i@*/ *dbi = db3dbi;  /* structure assignment */
00404     /*@=assignexpose@*/
00405     memset(&db3dbi, 0, sizeof(db3dbi));
00406 
00407     if (!(dbi->dbi_perms & 0600))
00408         dbi->dbi_perms = 0644;
00409     dbi->dbi_mode = rpmdb->db_mode;
00410     /*@-assignexpose -newreftrans@*/ /* FIX: figger rpmdb/dbi refcounts */
00411 /*@i@*/ dbi->dbi_rpmdb = rpmdb;
00412     /*@=assignexpose =newreftrans@*/
00413     dbi->dbi_rpmtag = rpmtag;
00414     
00415     /*
00416      * Inverted lists have join length of 2, primary data has join length of 1.
00417      */
00418     /*@-sizeoftype@*/
00419     switch (rpmtag) {
00420     case RPMDBI_PACKAGES:
00421     case RPMDBI_DEPENDS:
00422         dbi->dbi_jlen = 1 * sizeof(int_32);
00423         break;
00424     default:
00425         dbi->dbi_jlen = 2 * sizeof(int_32);
00426         break;
00427     }
00428     /*@=sizeoftype@*/
00429 
00430     dbi->dbi_byteswapped = 0;   /* -1 unknown, 0 native order, 1 alien order */
00431 
00432     if (!dbi->dbi_use_dbenv) {          /* db3 dbenv is always used now. */
00433         dbi->dbi_use_dbenv = 1;
00434         dbi->dbi_eflags |= (DB_INIT_MPOOL|DB_JOINENV);
00435         dbi->dbi_mp_mmapsize = 16 * 1024 * 1024;
00436         dbi->dbi_mp_size = 1 * 1024 * 1024;
00437     }
00438 
00439     if ((dbi->dbi_bt_flags | dbi->dbi_h_flags) & DB_DUP)
00440         dbi->dbi_permit_dups = 1;
00441 
00442     /*@-globstate@*/ /* FIX: *(rdbOptions->arg) reachable */
00443     return dbi;
00444     /*@=globstate@*/
00445 }
00446 /*@=bounds@*/
00447 
00448 /*@-boundswrite@*/
00449 const char *const prDbiOpenFlags(int dbflags, int print_dbenv_flags)
00450 {
00451     static char buf[256];
00452     struct poptOption *opt;
00453     char * oe;
00454 
00455     oe = buf;
00456     *oe = '\0';
00457     for (opt = rdbOptions; opt->longName != NULL; opt++) {
00458         if (opt->argInfo != POPT_BIT_SET)
00459             continue;
00460         if (print_dbenv_flags) {
00461             if (!(opt->arg == &db3dbi.dbi_oeflags ||
00462                   opt->arg == &db3dbi.dbi_eflags))
00463                 continue;
00464         } else {
00465             if (!(opt->arg == &db3dbi.dbi_oeflags ||
00466                   opt->arg == &db3dbi.dbi_oflags))
00467                 continue;
00468         }
00469         if ((dbflags & opt->val) != opt->val)
00470             continue;
00471         if (oe != buf)
00472             *oe++ = ':';
00473         oe = stpcpy(oe, opt->longName);
00474         dbflags &= ~opt->val;
00475     }
00476     if (dbflags) {
00477         if (oe != buf)
00478             *oe++ = ':';
00479             sprintf(oe, "0x%x", (unsigned)dbflags);
00480     }
00481     return buf;
00482 }
00483 /*@=boundswrite@*/
00484 
00485 #endif

Generated on Tue Sep 17 15:59:55 2002 for rpm by doxygen1.2.14 written by Dimitri van Heesch, © 1997-2002