4f294c247f
This patch mainly copies and modifies files existing in the current libc implementing minix specific functions. To keep consisten with the NetBSD libc, we remove namespace stubs and we use "namespace.h" and weak links.
140 lines
2.6 KiB
C
140 lines
2.6 KiB
C
#include <sys/cdefs.h>
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#include "namespace.h"
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#ifdef __weak_alias
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__weak_alias(socket, _socket)
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#endif
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#include <errno.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/socket.h>
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#include <sys/ioc_net.h>
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#include <net/netlib.h>
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#include <netinet/in.h>
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#define DEBUG 0
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static int _tcp_socket(int protocol);
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static int _udp_socket(int protocol);
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static int _uds_socket(int type, int protocol);
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int socket(int domain, int type, int protocol)
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{
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#if DEBUG
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fprintf(stderr, "socket: domain %d, type %d, protocol %d\n",
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domain, type, protocol);
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#endif
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if (domain != AF_INET && domain != AF_UNIX)
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{
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#if DEBUG
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fprintf(stderr, "socket: bad domain %d\n", domain);
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#endif
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errno= EAFNOSUPPORT;
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return -1;
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}
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if (domain == AF_UNIX && (type == SOCK_STREAM ||
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type == SOCK_DGRAM || type == SOCK_SEQPACKET))
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return _uds_socket(type, protocol);
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if (domain == AF_INET && type == SOCK_STREAM)
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return _tcp_socket(protocol);
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if (domain == AF_INET && type == SOCK_DGRAM)
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return _udp_socket(protocol);
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#if DEBUG
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fprintf(stderr, "socket: nothing for domain %d, type %d, protocol %d\n",
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domain, type, protocol);
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#endif
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errno= EPROTOTYPE;
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return -1;
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}
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static int _tcp_socket(int protocol)
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{
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int fd;
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if (protocol != 0 && protocol != IPPROTO_TCP)
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{
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#if DEBUG
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fprintf(stderr, "socket(tcp): bad protocol %d\n", protocol);
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#endif
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errno= EPROTONOSUPPORT;
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return -1;
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}
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fd= open(TCP_DEVICE, O_RDWR);
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return fd;
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}
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static int _udp_socket(int protocol)
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{
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int r, fd, t_errno;
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struct sockaddr_in sin;
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if (protocol != 0 && protocol != IPPROTO_UDP)
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{
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#if DEBUG
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fprintf(stderr, "socket(udp): bad protocol %d\n", protocol);
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#endif
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errno= EPROTONOSUPPORT;
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return -1;
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}
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fd= open(UDP_DEVICE, O_RDWR);
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if (fd == -1)
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return fd;
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/* Bind is implict for UDP sockets? */
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sin.sin_family= AF_INET;
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sin.sin_addr.s_addr= INADDR_ANY;
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sin.sin_port= 0;
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r= bind(fd, (struct sockaddr *)&sin, sizeof(sin));
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if (r != 0)
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{
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t_errno= errno;
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close(fd);
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errno= t_errno;
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return -1;
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}
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return fd;
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}
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static int _uds_socket(int type, int protocol)
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{
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int fd, r;
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if (protocol != 0)
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{
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#if DEBUG
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fprintf(stderr, "socket(uds): bad protocol %d\n", protocol);
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#endif
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errno= EPROTONOSUPPORT;
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return -1;
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}
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fd= open(UDS_DEVICE, O_RDWR);
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if (fd == -1) {
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return fd;
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}
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/* set the type for the socket via ioctl (SOCK_DGRAM,
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* SOCK_STREAM, SOCK_SEQPACKET, etc)
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*/
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r= ioctl(fd, NWIOSUDSTYPE, &type);
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if (r == -1) {
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int ioctl_errno;
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/* if that failed rollback socket creation */
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ioctl_errno= errno;
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close(fd);
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/* return the error thrown by the call to ioctl */
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errno= ioctl_errno;
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return -1;
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}
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return fd;
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}
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