diff options
Diffstat (limited to 'contrib/bind/lib/irs/irs_data.c')
| -rw-r--r-- | contrib/bind/lib/irs/irs_data.c | 171 |
1 files changed, 163 insertions, 8 deletions
diff --git a/contrib/bind/lib/irs/irs_data.c b/contrib/bind/lib/irs/irs_data.c index 7f23751..f31fe69 100644 --- a/contrib/bind/lib/irs/irs_data.c +++ b/contrib/bind/lib/irs/irs_data.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 1996 by Internet Software Consortium. + * 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 @@ -16,24 +16,179 @@ */ #if !defined(LINT) && !defined(CODECENTER) -static char rcsid[] = "$Id: irs_data.c,v 1.7 1997/12/04 04:57:54 halley Exp $"; +static const char rcsid[] = "$Id: irs_data.c,v 1.14 1999/10/13 16:39:31 vixie 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 <isc/memcluster.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() { +#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_nclose(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; + } + + (*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; +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) + return (NULL); +#ifndef DO_PTHREADS + (*net_data->irs->res_set)(net_data->irs, &_res, NULL); +#endif -int -net_data_init() { - if (!net_data.irs) - net_data.irs = irs_gen_acc(""); - return (net_data.irs != NULL); + net_data->res = (*net_data->irs->res_get)(net_data->irs); + if (net_data->res == NULL) + return (NULL); + + if (res_ninit(net_data->res) == -1) + return (NULL); + + return (net_data); } + + + +void +net_data_minimize(struct net_data *net_data) { + res_nclose(net_data->res); +} + +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); +} + +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*/ |
