minix/lib/libc/sys-minix/sendto.c
Ben Gras 2fe8fb192f Full switch to clang/ELF. Drop ack. Simplify.
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
2012-02-14 14:52:02 +01:00

236 lines
5.1 KiB
C

#include <sys/cdefs.h>
#include "namespace.h"
#undef NDEBUG
#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <net/gen/in.h>
#include <net/gen/tcp.h>
#include <net/gen/tcp_io.h>
#include <net/gen/udp.h>
#include <net/gen/udp_hdr.h>
#include <net/gen/udp_io.h>
#define DEBUG 0
static ssize_t _tcp_sendto(int sock, const void *message, size_t length,
int flags, const struct sockaddr *dest_addr, socklen_t dest_len);
static ssize_t _udp_sendto(int sock, const void *message, size_t length,
int flags, const struct sockaddr *dest_addr, socklen_t dest_len,
nwio_udpopt_t *udpoptp);
static ssize_t _uds_sendto_conn(int sock, const void *message, size_t length,
int flags, const struct sockaddr *dest_addr, socklen_t dest_len);
static ssize_t _uds_sendto_dgram(int sock, const void *message, size_t length,
int flags, const struct sockaddr *dest_addr, socklen_t dest_len);
ssize_t sendto(int sock, const void *message, size_t length, int flags,
const struct sockaddr *dest_addr, socklen_t dest_len)
{
int r;
nwio_tcpopt_t tcpopt;
nwio_udpopt_t udpopt;
int uds_sotype = -1;
r= ioctl(sock, NWIOGTCPOPT, &tcpopt);
if (r != -1 || (errno != ENOTTY && errno != EBADIOCTL))
{
if (r == -1)
return r;
return _tcp_sendto(sock, message, length, flags,
dest_addr, dest_len);
}
r= ioctl(sock, NWIOGUDPOPT, &udpopt);
if (r != -1 || (errno != ENOTTY && errno != EBADIOCTL))
{
if (r == -1)
return r;
return _udp_sendto(sock, message, length, flags,
dest_addr, dest_len, &udpopt);
}
r= ioctl(sock, NWIOGUDSSOTYPE, &uds_sotype);
if (r != -1 || (errno != ENOTTY && errno != EBADIOCTL))
{
if (r == -1) {
return r;
}
if (uds_sotype == SOCK_DGRAM) {
return _uds_sendto_dgram(sock, message,
length, flags,dest_addr, dest_len);
} else {
return _uds_sendto_conn(sock, message,
length, flags, dest_addr, dest_len);
}
}
#if DEBUG
fprintf(stderr, "sendto: not implemented for fd %d\n", sock);
#endif
errno= ENOSYS;
return -1;
}
static ssize_t _tcp_sendto(int sock, const void *message, size_t length,
int flags, const struct sockaddr *dest_addr, socklen_t dest_len)
{
if (flags != 0) {
#if DEBUG
fprintf(stderr, "sendto(tcp): flags not implemented\n");
#endif
errno= ENOSYS;
return -1;
}
/* Silently ignore destination, if given. */
return write(sock, message, length);
}
static ssize_t _udp_sendto(int sock, const void *message, size_t length,
int flags, const struct sockaddr *dest_addr, socklen_t dest_len,
nwio_udpopt_t *udpoptp)
{
int r, t_errno;
size_t buflen;
void *buf;
struct sockaddr_in *sinp;
udp_io_hdr_t *io_hdrp;
if (flags)
{
#if DEBUG
fprintf(stderr, "sendto(udp): flags not implemented\n");
#endif
errno= ENOSYS;
return -1;
}
if (udpoptp->nwuo_flags & NWUO_RWDATONLY)
return write(sock, message, length);
if ((udpoptp->nwuo_flags & NWUO_RP_ANY) ||
(udpoptp->nwuo_flags & NWUO_RA_ANY))
{
if (!dest_addr)
{
errno= ENOTCONN;
return -1;
}
/* Check destination address */
if (dest_len < sizeof(*sinp))
{
errno= EINVAL;
return -1;
}
sinp= (struct sockaddr_in *) __UNCONST(dest_addr);
if (sinp->sin_family != AF_INET)
{
errno= EAFNOSUPPORT;
return -1;
}
}
buflen= sizeof(*io_hdrp) + length;
if (buflen < length)
{
/* Overflow */
errno= EMSGSIZE;
return -1;
}
buf= malloc(buflen);
if (buf == NULL)
return -1;
io_hdrp= buf;
io_hdrp->uih_src_addr= 0; /* Unused */
io_hdrp->uih_src_port= 0; /* Will cause error if NWUO_LP_ANY */
if (udpoptp->nwuo_flags & NWUO_RA_ANY)
io_hdrp->uih_dst_addr= sinp->sin_addr.s_addr;
else
io_hdrp->uih_dst_addr= 0;
if (udpoptp->nwuo_flags & NWUO_RP_ANY)
io_hdrp->uih_dst_port= sinp->sin_port;
else
io_hdrp->uih_dst_port= 0;
io_hdrp->uih_ip_opt_len= 0;
io_hdrp->uih_data_len= 0;
memcpy(&io_hdrp[1], message, length);
r= write(sock, buf, buflen);
if (r == -1)
{
t_errno= errno;
free(buf);
errno= t_errno;
return -1;
}
assert(r == buflen);
free(buf);
return length;
}
static ssize_t _uds_sendto_conn(int sock, const void *message, size_t length,
int flags, const struct sockaddr *dest_addr, socklen_t dest_len)
{
/* for connection oriented unix domain sockets (SOCK_STREAM /
* SOCK_SEQPACKET)
*/
if (flags != 0) {
#if DEBUG
fprintf(stderr, "sendto(uds): flags not implemented\n");
#endif
errno= ENOSYS;
return -1;
}
/* Silently ignore destination, if given. */
return write(sock, message, length);
}
static ssize_t _uds_sendto_dgram(int sock, const void *message, size_t length,
int flags, const struct sockaddr *dest_addr, socklen_t dest_len)
{
int r;
/* for connectionless unix domain sockets (SOCK_DGRAM) */
if (flags != 0) {
#if DEBUG
fprintf(stderr, "sendto(uds): flags not implemented\n");
#endif
errno= ENOSYS;
return -1;
}
if (dest_addr == NULL) {
errno = EFAULT;
return -1;
}
/* set the target address */
r= ioctl(sock, NWIOSUDSTADDR, (void *) __UNCONST(dest_addr));
if (r == -1) {
return r;
}
/* do the send */
return write(sock, message, length);
}