minix/lib/nbsd_libc/sys-minix/sendmsg.c
Gianluca Guida 4f294c247f Add NBSDLibc Minix specific files.
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.
2011-02-17 17:11:09 +00:00

137 lines
2.7 KiB
C

#include <sys/cdefs.h>
#include "namespace.h"
#undef NDEBUG
#include <errno.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <sys/ioc_net.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/un.h>
#define DEBUG 0
static ssize_t _uds_sendmsg_conn(int sock, const struct msghdr *msg,
int flags);
static ssize_t _uds_sendmsg_dgram(int sock, const struct msghdr *msg,
int flags);
ssize_t sendmsg(int sock, const struct msghdr *msg, int flags)
{
int r;
int uds_sotype;
if (msg == NULL) {
errno= EFAULT;
return -1;
}
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_sendmsg_dgram(sock, msg, flags);
} else {
return _uds_sendmsg_conn(sock, msg, flags);
}
}
#if DEBUG
fprintf(stderr, "sendmsg: not implemented for fd %d\n", sock);
#endif
errno= ENOSYS;
return -1;
}
static ssize_t _uds_sendmsg_conn(int sock, const struct msghdr *msg,
int flags)
{
struct msg_control msg_ctrl;
int r;
if (flags != 0) {
#if DEBUG
fprintf(stderr, "sendmsg(uds): flags not implemented\n");
#endif
errno= ENOSYS;
return -1;
}
/* grab the control data */
memset(&msg_ctrl, '\0', sizeof(struct msg_control));
if (msg->msg_controllen > MSG_CONTROL_MAX) {
errno = ENOMEM;
return -1;
} else if (msg->msg_controllen > 0) {
memcpy(&msg_ctrl.msg_control, msg->msg_control,
msg->msg_controllen);
}
msg_ctrl.msg_controllen = msg->msg_controllen;
/* send the control data to PFS */
r= ioctl(sock, NWIOSUDSCTRL, (void *) &msg_ctrl);
if (r == -1) {
return r;
}
/* Silently ignore destination, if given. */
return writev(sock, msg->msg_iov, msg->msg_iovlen);
}
static ssize_t _uds_sendmsg_dgram(int sock, const struct msghdr *msg,
int flags)
{
struct msg_control msg_ctrl;
struct sockaddr_un *dest_addr;
int i, r;
if (flags != 0) {
#if DEBUG
fprintf(stderr, "sendmsg(uds): flags not implemented\n");
#endif
errno= ENOSYS;
return -1;
}
dest_addr = msg->msg_name;
if (dest_addr == NULL) {
errno= EFAULT;
return -1;
}
/* set the target address */
r= ioctl(sock, NWIOSUDSTADDR, (void *) dest_addr);
if (r == -1) {
return r;
}
/* grab the control data */
memset(&msg_ctrl, '\0', sizeof(struct msg_control));
if (msg->msg_controllen > MSG_CONTROL_MAX) {
errno = ENOMEM;
return -1;
} else if (msg->msg_controllen > 0) {
memcpy(&msg_ctrl.msg_control, msg->msg_control,
msg->msg_controllen);
}
msg_ctrl.msg_controllen = msg->msg_controllen;
/* send the control data to PFS */
r= ioctl(sock, NWIOSUDSCTRL, (void *) &msg_ctrl);
if (r == -1) {
return r;
}
/* do the send */
return writev(sock, msg->msg_iov, msg->msg_iovlen);
}