minix/lib/nbsd_libc/sys-minix/sendto.c
Thomas Veerman a209c3ae12 Fix a ton of compiler warnings
This patch fixes most of current reasons to generate compiler warnings.
The changes consist of:
 - adding missing casts
 - hiding or unhiding function declarations
 - including headers where missing
 - add __UNCONST when assigning a const char * to a char *
 - adding missing return statements
 - changing some types from unsigned to signed, as the code seems to want
   signed ints
 - converting old-style function definitions to current style (i.e.,
   void func(param1, param2) short param1, param2; {...} to
   void func (short param1, short param2) {...})
 - making the compiler silent about signed vs unsigned comparisons. We
   have too many of those in the new libc to fix.

A number of bugs in the test set were fixed. These bugs were never
triggered with our old libc. Consequently, these tests are now forced to
link with the new libc or they will generate errors (in particular tests 43
and 55).

Most changes in NetBSD libc are limited to moving aroudn "#ifndef __minix"
or stuff related to Minix-specific things (code in sys-minix or gen/minix).
2011-11-14 10:07:49 +00:00

236 lines
5 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 *)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 *) dest_addr);
if (r == -1) {
return r;
}
/* do the send */
return write(sock, message, length);
}