diff options
Diffstat (limited to 'usr/src/lib/libresolv2/common/irs/irs_data.c')
| -rw-r--r-- | usr/src/lib/libresolv2/common/irs/irs_data.c | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/usr/src/lib/libresolv2/common/irs/irs_data.c b/usr/src/lib/libresolv2/common/irs/irs_data.c new file mode 100644 index 0000000000..14d965bf0c --- /dev/null +++ b/usr/src/lib/libresolv2/common/irs/irs_data.c @@ -0,0 +1,221 @@ +/* + * Copyright 2003 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +/* + * Copyright (c) 1996,1999 by Internet Software Consortium. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS + * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE + * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL + * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR + * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS + * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS + * SOFTWARE. + */ + +#pragma ident "%Z%%M% %I% %E% SMI" + +#if !defined(LINT) && !defined(CODECENTER) +static const char rcsid[] = "$Id: irs_data.c,v 1.22 2003/06/20 07:09:33 marka Exp $"; +#endif + +#include "port_before.h" + +#ifndef __BIND_NOSTATIC + +#include <sys/types.h> + +#include <netinet/in.h> +#include <arpa/nameser.h> + +#include <resolv.h> +#include <stdio.h> +#include <string.h> +#include <isc/memcluster.h> +#include <stdlib.h> + +#ifdef DO_PTHREADS +#include <pthread.h> +#endif + +#include <irs.h> + +#include "port_after.h" + +#include "irs_data.h" +#undef _res +#undef h_errno + +extern struct __res_state _res; +extern int h_errno; + +#ifdef DO_PTHREADS +static pthread_key_t key; +static int once = 0; +#else +static struct net_data *net_data; +#endif + +void +irs_destroy(void) { +#ifndef DO_PTHREADS + if (net_data != NULL) + net_data_destroy(net_data); + net_data = NULL; +#endif +} + +void +net_data_destroy(void *p) { + struct net_data *net_data = p; + + res_ndestroy(net_data->res); + if (net_data->gr != NULL) { + (*net_data->gr->close)(net_data->gr); + net_data->gr = NULL; + } + if (net_data->pw != NULL) { + (*net_data->pw->close)(net_data->pw); + net_data->pw = NULL; + } + if (net_data->sv != NULL) { + (*net_data->sv->close)(net_data->sv); + net_data->sv = NULL; + } + if (net_data->pr != NULL) { + (*net_data->pr->close)(net_data->pr); + net_data->pr = NULL; + } + if (net_data->ho != NULL) { + (*net_data->ho->close)(net_data->ho); + net_data->ho = NULL; + } + if (net_data->nw != NULL) { + (*net_data->nw->close)(net_data->nw); + net_data->nw = NULL; + } + if (net_data->ng != NULL) { + (*net_data->ng->close)(net_data->ng); + net_data->ng = NULL; + } + if (net_data->ho_data != NULL) { + free(net_data->ho_data); + net_data->ho_data = NULL; + } + if (net_data->nw_data != NULL) { + free(net_data->nw_data); + net_data->nw_data = NULL; + } + + (*net_data->irs->close)(net_data->irs); + memput(net_data, sizeof *net_data); +} + +/* applications that need a specific config file other than + * _PATH_IRS_CONF should call net_data_init directly rather than letting + * the various wrapper functions make the first call. - brister + */ + +struct net_data * +net_data_init(const char *conf_file) { +#ifdef DO_PTHREADS + static pthread_mutex_t keylock = PTHREAD_MUTEX_INITIALIZER; + struct net_data *net_data; + + if (!once) { + pthread_mutex_lock(&keylock); + if (!once++) + pthread_key_create(&key, net_data_destroy); + pthread_mutex_unlock(&keylock); + } + net_data = pthread_getspecific(key); +#endif + + if (net_data == NULL) { + net_data = net_data_create(conf_file); + if (net_data == NULL) + return (NULL); +#ifdef DO_PTHREADS + pthread_setspecific(key, net_data); +#endif + } + + return (net_data); +} + +struct net_data * +net_data_create(const char *conf_file) { + struct net_data *net_data; + + net_data = memget(sizeof (struct net_data)); + if (net_data == NULL) + return (NULL); + memset(net_data, 0, sizeof (struct net_data)); + + if ((net_data->irs = irs_gen_acc("", conf_file)) == NULL) { + memput(net_data, sizeof (struct net_data)); + return (NULL); + } +#ifndef DO_PTHREADS + (*net_data->irs->res_set)(net_data->irs, &_res, NULL); +#endif + + net_data->res = (*net_data->irs->res_get)(net_data->irs); + if (net_data->res == NULL) { + (*net_data->irs->close)(net_data->irs); + memput(net_data, sizeof (struct net_data)); + return (NULL); + } + + if ((net_data->res->options & RES_INIT) == 0 && + res_ninit(net_data->res) == -1) { + (*net_data->irs->close)(net_data->irs); + memput(net_data, sizeof (struct net_data)); + return (NULL); + } + + return (net_data); +} + + + +void +net_data_minimize(struct net_data *net_data) { + res_nclose(net_data->res); +} + +#ifdef _REENTRANT +struct __res_state * +__res_state(void) { + /* NULL param here means use the default config file. */ + struct net_data *net_data = net_data_init(NULL); + if (net_data && net_data->res) + return (net_data->res); + + return (&_res); +} +#endif + +int * +__h_errno(void) { + /* NULL param here means use the default config file. */ + struct net_data *net_data = net_data_init(NULL); + if (net_data && net_data->res) + return (&net_data->res->res_h_errno); + return (&h_errno); +} + +void +__h_errno_set(struct __res_state *res, int err) { + + h_errno = res->res_h_errno = err; +} + +#endif /*__BIND_NOSTATIC*/ |