diff options
Diffstat (limited to 'lib/libc/net/getproto.c')
| -rw-r--r-- | lib/libc/net/getproto.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/lib/libc/net/getproto.c b/lib/libc/net/getproto.c new file mode 100644 index 0000000..b923edf --- /dev/null +++ b/lib/libc/net/getproto.c @@ -0,0 +1,143 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "@(#)getproto.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <errno.h> +#include <netdb.h> +#include <nsswitch.h> +#include "netdb_private.h" +#ifdef NS_CACHING +#include "nscache.h" +#endif +#include "nss_tls.h" + +static const ns_src defaultsrc[] = { + { NSSRC_FILES, NS_SUCCESS }, + { NULL, 0 } +}; + +#ifdef NS_CACHING +extern int __proto_id_func(char *, size_t *, va_list, void *); +extern int __proto_marshal_func(char *, size_t *, void *, va_list, void *); +extern int __proto_unmarshal_func(char *, size_t, void *, va_list, void *); +#endif + +static int +files_getprotobynumber(void *retval, void *mdata, va_list ap) +{ + struct protoent pe; + struct protoent_data *ped; + int error; + + int number; + struct protoent *pptr; + char *buffer; + size_t buflen; + int *errnop; + + number = va_arg(ap, int); + pptr = va_arg(ap, struct protoent *); + buffer = va_arg(ap, char *); + buflen = va_arg(ap, size_t); + errnop = va_arg(ap, int *); + + if ((ped = __protoent_data_init()) == NULL) { + *errnop = errno; + return (NS_NOTFOUND); + } + + __setprotoent_p(ped->stayopen, ped); + while ((error = __getprotoent_p(&pe, ped)) == 0) + if (pe.p_proto == number) + break; + if (!ped->stayopen) + __endprotoent_p(ped); + if (error != 0) { + *errnop = errno; + return (NS_NOTFOUND); + } + if (__copy_protoent(&pe, pptr, buffer, buflen) != 0) { + *errnop = errno; + return (NS_RETURN); + } + + *((struct protoent **)retval) = pptr; + return (NS_SUCCESS); +} + +int +getprotobynumber_r(int proto, struct protoent *pptr, char *buffer, + size_t buflen, struct protoent **result) +{ +#ifdef NS_CACHING + static const nss_cache_info cache_info = + NS_COMMON_CACHE_INFO_INITIALIZER( + protocols, (void *)nss_lt_id, + __proto_id_func, __proto_marshal_func, __proto_unmarshal_func); +#endif + + static const ns_dtab dtab[] = { + { NSSRC_FILES, files_getprotobynumber, NULL }, +#ifdef NS_CACHING + NS_CACHE_CB(&cache_info) +#endif + { NULL, NULL, NULL } + }; + int rv, ret_errno; + + ret_errno = 0; + *result = NULL; + rv = nsdispatch(result, dtab, NSDB_PROTOCOLS, "getprotobynumber_r", + defaultsrc, proto, pptr, buffer, buflen, &ret_errno); + + if (rv != NS_SUCCESS) { + errno = ret_errno; + return (ret_errno); + } + return (0); +} + +struct protoent * +getprotobynumber(int proto) +{ + struct protodata *pd; + struct protoent *rval; + + if ((pd = __protodata_init()) == NULL) + return (NULL); + if (getprotobynumber_r(proto, &pd->proto, pd->data, sizeof(pd->data), + &rval) != 0) + return (NULL); + return (rval); +} |
