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Implement sock_send_to and sock_recv_from system calls (#1457)

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This commit is contained in:
Marcin Kolny
2022-09-13 02:00:05 +01:00
committed by GitHub
parent 56b4a8bd4c
commit b731ca4668
16 changed files with 844 additions and 254 deletions
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62
core/iwasm/libraries/lib-socket/src/wasi/wasi_socket_ext.c
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@ -59,7 +59,7 @@ sockaddr_to_wasi_addr(const struct sockaddr *sock_addr, socklen_t addrlen,
((struct sockaddr_in *)sock_addr)->sin_port, wasi_addr);
}
else if (AF_INET6 == sock_addr->sa_family) {
assert(sizeof(struct sockaddr_in6) == addrlen);
assert(sizeof(struct sockaddr_in6) <= addrlen);
ipv6_addr_to_wasi_addr(
(uint16_t *)((struct sockaddr_in6 *)sock_addr)->sin6_addr.s6_addr,
((struct sockaddr_in6 *)sock_addr)->sin6_port, wasi_addr);
@ -252,6 +252,66 @@ sendmsg(int sockfd, const struct msghdr *msg, int flags)
return so_datalen;
}
ssize_t
sendto(int sockfd, const void *buf, size_t len, int flags,
const struct sockaddr *dest_addr, socklen_t addrlen)
{
// Prepare input parameters.
__wasi_ciovec_t iov = { .buf = buf, .buf_len = len };
uint32_t so_datalen = 0;
__wasi_addr_t wasi_addr;
__wasi_errno_t error;
size_t si_data_len = 1;
__wasi_siflags_t si_flags = 0;
// This implementation does not support any flags.
if (flags != 0) {
HANDLE_ERROR(__WASI_ERRNO_NOPROTOOPT)
}
error = sockaddr_to_wasi_addr(dest_addr, addrlen, &wasi_addr);
HANDLE_ERROR(error);
// Perform system call.
error = __wasi_sock_send_to(sockfd, &iov, si_data_len, si_flags, &wasi_addr,
&so_datalen);
HANDLE_ERROR(error)
return so_datalen;
}
ssize_t
recvfrom(int sockfd, void *buf, size_t len, int flags,
struct sockaddr *src_addr, socklen_t *addrlen)
{
// Prepare input parameters.
__wasi_ciovec_t iov = { .buf = buf, .buf_len = len };
uint32_t so_datalen = 0;
__wasi_addr_t wasi_addr;
__wasi_errno_t error;
size_t si_data_len = 1;
__wasi_siflags_t si_flags = 0;
// This implementation does not support any flags.
if (flags != 0) {
HANDLE_ERROR(__WASI_ERRNO_NOPROTOOPT)
}
if (!src_addr) {
return recv(sockfd, buf, len, flags);
}
// Perform system call.
error = __wasi_sock_recv_from(sockfd, &iov, si_data_len, si_flags,
&wasi_addr, &so_datalen);
HANDLE_ERROR(error);
error = wasi_addr_to_sockaddr(&wasi_addr, src_addr, addrlen);
HANDLE_ERROR(error);
return so_datalen;
}
int
socket(int domain, int type, int protocol)
{