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.
144 lines
2.6 KiB
C
144 lines
2.6 KiB
C
#include <sys/cdefs.h>
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#include "namespace.h"
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#include <errno.h>
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#include <stdio.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <net/netlib.h>
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#include <sys/ioc_net.h>
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#include <sys/socket.h>
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#include <sys/stat.h>
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#include <sys/un.h>
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#ifdef __weak_alias
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__weak_alias(socketpair, _socketpair)
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#endif
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#define DEBUG 0
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static int _uds_socketpair(int type, int protocol, int sv[2]);
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/*
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* Create a pair of connected sockets
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*/
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int socketpair(int domain, int type, int protocol, int sv[2]) {
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#if DEBUG
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fprintf(stderr, "socketpair: 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_UNIX)
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{
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errno = EAFNOSUPPORT;
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return -1;
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}
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if (domain == AF_UNIX &&
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(type == SOCK_STREAM || type == SOCK_SEQPACKET))
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return _uds_socketpair(type, protocol, sv);
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#if DEBUG
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fprintf(stderr,
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"socketpair: 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 _uds_socketpair(int type, int protocol, int sv[2])
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{
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dev_t dev;
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int r, i;
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struct stat sbuf;
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if (protocol != 0)
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{
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#if DEBUG
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fprintf(stderr, "socketpair(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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/* in this 'for' loop two unconnected sockets are created */
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for (i = 0; i < 2; i++) {
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sv[i]= open(UDS_DEVICE, O_RDWR);
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if (sv[i] == -1) {
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int open_errno = errno;
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if (i == 1) {
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/* if we failed to open() the 2nd
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* socket, we need to close the 1st
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*/
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close(sv[0]);
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errno = open_errno;
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}
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return -1;
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}
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/* set the type for the socket via ioctl
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* (SOCK_STREAM, SOCK_SEQPACKET, etc)
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*/
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r= ioctl(sv[i], 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(sv[i]);
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if (i == 1) {
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/* if we just closed the 2nd socket, we
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* need to close the 1st
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*/
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close(sv[0]);
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}
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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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}
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r= fstat(sv[1], &sbuf);
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if (r == -1) {
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int fstat_errno;
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/* if that failed rollback socket creation */
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fstat_errno= errno;
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close(sv[0]);
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close(sv[1]);
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/* return the error thrown by the call to fstat */
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errno= fstat_errno;
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return -1;
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}
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dev = sbuf.st_dev;
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/* connect the sockets sv[0] and sv[1] */
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r= ioctl(sv[0], NWIOSUDSPAIR, &dev);
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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(sv[0]);
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close(sv[1]);
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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 0;
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}
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