diff options
author | jkar8572 <jkar8572> | 2002-11-21 21:15:26 +0000 |
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committer | jkar8572 <jkar8572> | 2002-11-21 21:15:26 +0000 |
commit | edd700c9902a76af807794e00a121dd64d12efde (patch) | |
tree | ef58d18a03cb14e96d1b6bf97fa436a3df808f41 /svc_socket.c | |
parent | ad868a7b3e1c2cdaeddcf93b8ccf55434b0d1c21 (diff) | |
download | linuxquota-edd700c9902a76af807794e00a121dd64d12efde.tar.gz |
Made quota tools aware of /etc/services (unknown)
Diffstat (limited to 'svc_socket.c')
-rw-r--r-- | svc_socket.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/svc_socket.c b/svc_socket.c new file mode 100644 index 0000000..4abb37c --- /dev/null +++ b/svc_socket.c @@ -0,0 +1,110 @@ +/* Copyright (C) 2002 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <stdio.h> +#include <string.h> +#include <unistd.h> +#include <netdb.h> +#include <rpc/rpc.h> +#include <sys/socket.h> +#include <errno.h> + +#include "pot.h" + +static int svc_socket (u_long number, int type, int protocol, int reuse) +{ + struct sockaddr_in addr; + socklen_t len = sizeof (struct sockaddr_in); + char rpcdata [1024], servdata [1024]; + struct rpcent rpcbuf, *rpcp; + struct servent servbuf, *servp; + int sock, ret; + const char *proto = protocol == IPPROTO_TCP ? "tcp" : "udp"; + + if ((sock = socket (AF_INET, type, protocol)) < 0) { + perror (_("svc_socket: socket creation problem")); + return sock; + } + + if (reuse) { + ret = 1; + ret = setsockopt (sock, SOL_SOCKET, SO_REUSEADDR, &ret, sizeof(ret)); + if (ret < 0) { + perror (_("svc_socket: socket reuse problem")); + return ret; + } + } + + memset(&addr, sizeof (addr), 0); + addr.sin_family = AF_INET; + + ret = getrpcbynumber_r (number, &rpcbuf, rpcdata, sizeof(rpcdata), &rpcp); + if (ret == 0 && rpcp != NULL) { + /* First try name. */ + ret = getservbyname_r(rpcp->r_name, proto, &servbuf, servdata, + sizeof servdata, &servp); + if ((ret != 0 || servp == NULL) && rpcp->r_aliases) { + const char **a; + + /* Then we try aliases. */ + for (a = (const char **) rpcp->r_aliases; *a != NULL; a++) { + ret = getservbyname_r (*a, proto, &servbuf, servdata, + sizeof servdata, &servp); + if (ret == 0 && servp != NULL) + break; + } + } + } + + if (ret == 0 && servp != NULL) { + addr.sin_port = servp->s_port; + if (bind (sock, (struct sockaddr *) &addr, len) < 0) { + perror (_("svc_socket: bind problem")); + close (sock); + sock = -1; + } + } + else { + if (bindresvport (sock, &addr)) { + addr.sin_port = 0; + if (bind (sock, (struct sockaddr *) &addr, len) < 0) { + perror (_("svc_socket: bind problem")); + close (sock); + sock = -1; + } + } + } + + return sock; +} + +/* + * Create and bind a TCP socket based on program number + */ +int svctcp_socket (u_long number, int reuse) +{ + return svc_socket (number, SOCK_STREAM, IPPROTO_TCP, reuse); +} + +/* + * Create and bind a UDP socket based on program number + */ +int svcudp_socket (u_long number, int reuse) +{ + return svc_socket (number, SOCK_DGRAM, IPPROTO_UDP, reuse); +} |