2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
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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