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.
136 lines
2.8 KiB
C
136 lines
2.8 KiB
C
#include <sys/cdefs.h>
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#include "namespace.h"
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#undef NDEBUG
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#include <errno.h>
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#include <sys/ioctl.h>
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#include <sys/ioc_net.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <sys/un.h>
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#define DEBUG 0
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static ssize_t _uds_recvmsg_conn(int sock, struct msghdr *msg, int flags);
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static ssize_t _uds_recvmsg_dgram(int sock, struct msghdr *msg, int flags);
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ssize_t recvmsg(int sock, struct msghdr *msg, int flags)
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{
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int r;
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int uds_sotype;
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if (msg == NULL) {
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errno= EFAULT;
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return -1;
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}
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r= ioctl(sock, NWIOGUDSSOTYPE, &uds_sotype);
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if (r != -1 || (errno != ENOTTY && errno != EBADIOCTL)) {
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if (r == -1) {
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return r;
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}
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if (uds_sotype == SOCK_DGRAM) {
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return _uds_recvmsg_dgram(sock, msg, flags);
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} else {
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return _uds_recvmsg_conn(sock, msg, flags);
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}
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}
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#if DEBUG
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fprintf(stderr, "recvmsg: not implemented for fd %d\n", sock);
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#endif
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errno= ENOSYS;
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return -1;
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}
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static ssize_t _uds_recvmsg_conn(int sock, struct msghdr *msg, int flags)
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{
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int r, rc;
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if (flags != 0) {
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#if DEBUG
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fprintf(stderr, "recvmsg(uds): flags not implemented\n");
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#endif
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errno= ENOSYS;
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return -1;
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}
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r= readv(sock, msg->msg_iov, msg->msg_iovlen);
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if (r >= 0 && msg->msg_name && msg->msg_namelen > 0) {
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getpeername(sock, msg->msg_name, &msg->msg_namelen);
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}
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/* get control data */
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if (r >= 0 && msg->msg_control && msg->msg_controllen > 0) {
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struct msg_control msg_ctrl;
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memset(&msg_ctrl, '\0', sizeof(struct msg_control));
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msg_ctrl.msg_controllen = msg->msg_controllen;
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rc = ioctl(sock, NWIOGUDSCTRL, &msg_ctrl);
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if (rc == -1) {
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return rc;
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}
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if (msg_ctrl.msg_controllen <= msg->msg_controllen) {
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memcpy(msg->msg_control, msg_ctrl.msg_control,
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msg_ctrl.msg_controllen);
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msg->msg_controllen = msg_ctrl.msg_controllen;
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}
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}
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msg->msg_flags = 0;
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return r;
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}
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static ssize_t _uds_recvmsg_dgram(int sock, struct msghdr *msg, int flags)
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{
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int r, rc;
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if (flags != 0) {
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#if DEBUG
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fprintf(stderr, "recvmsg(uds): flags not implemented\n");
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#endif
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errno= ENOSYS;
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return -1;
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}
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r= readv(sock, msg->msg_iov, msg->msg_iovlen);
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if (r >= 0 && msg->msg_name &&
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msg->msg_namelen >= sizeof(struct sockaddr_un))
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{
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rc= ioctl(sock, NWIOGUDSFADDR, msg->msg_name);
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if (rc == -1) {
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return rc;
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}
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msg->msg_namelen= sizeof(struct sockaddr_un);
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}
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/* get control data */
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if (r >= 0 && msg->msg_control && msg->msg_controllen > 0) {
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struct msg_control msg_ctrl;
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memset(&msg_ctrl, '\0', sizeof(struct msg_control));
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msg_ctrl.msg_controllen = msg->msg_controllen;
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rc = ioctl(sock, NWIOGUDSCTRL, &msg_ctrl);
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if (rc == -1) {
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return rc;
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}
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if (msg_ctrl.msg_controllen <= msg->msg_controllen) {
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memcpy(msg->msg_control, msg_ctrl.msg_control,
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msg_ctrl.msg_controllen);
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msg->msg_controllen = msg_ctrl.msg_controllen;
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}
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}
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msg->msg_flags = 0;
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return r;
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}
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