int uv__accept(int sockfd, struct sockaddr* saddr, socklen_t slen) {
int peerfd;
assert(sockfd >= 0);
while (1) {
#if HAVE_SYS_ACCEPT4
peerfd = sys_accept4(sockfd, saddr, &slen, SOCK_NONBLOCK | SOCK_CLOEXEC);
if (peerfd != -1)
break;
if (errno == EINTR)
continue;
if (errno != ENOSYS)
break;
#endif
if ((peerfd = accept(sockfd, saddr, &slen)) == -1) {
if (errno == EINTR)
continue;
else
break;
}
if (uv__cloexec(peerfd, 1) || uv__nonblock(peerfd, 1)) {
uv__close(peerfd);
peerfd = -1;
}
break;
}
return peerfd;
}
asmlinkage long compat_sys_socketcall(int call, u32 __user *args)
{
int ret;
u32 a[6];
u32 a0, a1;
if (call < SYS_SOCKET || call > SYS_SENDMMSG)
return -EINVAL;
if (copy_from_user(a, args, nas[call]))
return -EFAULT;
a0 = a[0];
a1 = a[1];
switch (call) {
case SYS_SOCKET:
ret = sys_socket(a0, a1, a[2]);
break;
case SYS_BIND:
ret = sys_bind(a0, compat_ptr(a1), a[2]);
break;
case SYS_CONNECT:
ret = sys_connect(a0, compat_ptr(a1), a[2]);
break;
case SYS_LISTEN:
ret = sys_listen(a0, a1);
break;
case SYS_ACCEPT:
ret = sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), 0);
break;
case SYS_GETSOCKNAME:
ret = sys_getsockname(a0, compat_ptr(a1), compat_ptr(a[2]));
break;
case SYS_GETPEERNAME:
ret = sys_getpeername(a0, compat_ptr(a1), compat_ptr(a[2]));
break;
case SYS_SOCKETPAIR:
ret = sys_socketpair(a0, a1, a[2], compat_ptr(a[3]));
break;
case SYS_SEND:
ret = sys_send(a0, compat_ptr(a1), a[2], a[3]);
break;
case SYS_SENDTO:
ret = sys_sendto(a0, compat_ptr(a1), a[2], a[3], compat_ptr(a[4]), a[5]);
break;
case SYS_RECV:
ret = compat_sys_recv(a0, compat_ptr(a1), a[2], a[3]);
break;
case SYS_RECVFROM:
ret = compat_sys_recvfrom(a0, compat_ptr(a1), a[2], a[3],
compat_ptr(a[4]), compat_ptr(a[5]));
break;
case SYS_SHUTDOWN:
ret = sys_shutdown(a0, a1);
break;
case SYS_SETSOCKOPT:
ret = compat_sys_setsockopt(a0, a1, a[2],
compat_ptr(a[3]), a[4]);
break;
case SYS_GETSOCKOPT:
ret = compat_sys_getsockopt(a0, a1, a[2],
compat_ptr(a[3]), compat_ptr(a[4]));
break;
case SYS_SENDMSG:
ret = compat_sys_sendmsg(a0, compat_ptr(a1), a[2]);
break;
case SYS_SENDMMSG:
ret = compat_sys_sendmmsg(a0, compat_ptr(a1), a[2], a[3]);
break;
case SYS_RECVMSG:
ret = compat_sys_recvmsg(a0, compat_ptr(a1), a[2]);
break;
case SYS_RECVMMSG:
ret = compat_sys_recvmmsg(a0, compat_ptr(a1), a[2], a[3],
compat_ptr(a[4]));
break;
case SYS_ACCEPT4:
ret = sys_accept4(a0, compat_ptr(a1), compat_ptr(a[2]), a[3]);
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
DEFINE_SYSCALL(socketcall, int, call, uintptr_t *, args)
{
if (call < 1 || call > SYS_SENDMMSG)
return -L_EINVAL;
if (!mm_check_read(args, nargs[call]))
return -L_EFAULT;
switch (call)
{
case SYS_SOCKET:
return sys_socket(args[0], args[1], args[2]);
case SYS_BIND:
return sys_bind(args[0], (const struct sockaddr *)args[1], args[2]);
case SYS_CONNECT:
return sys_connect(args[0], (const struct sockaddr *)args[1], args[2]);
case SYS_LISTEN:
return sys_listen(args[0], args[1]);
case SYS_ACCEPT:
return sys_accept(args[0], (struct sockaddr *)args[1], (int *)args[2]);
case SYS_GETSOCKNAME:
return sys_getsockname(args[0], (struct sockaddr *)args[1], (int *)args[2]);
case SYS_GETPEERNAME:
return sys_getpeername(args[0], (struct sockaddr *)args[1], (int *)args[2]);
case SYS_SEND:
return sys_send(args[0], (const void *)args[1], args[2], args[3]);
case SYS_RECV:
return sys_recv(args[0], (void *)args[1], args[2], args[3]);
case SYS_SENDTO:
return sys_sendto(args[0], (const void *)args[1], args[2], args[3], (const struct sockaddr *)args[4], args[5]);
case SYS_RECVFROM:
return sys_recvfrom(args[0], (void *)args[1], args[2], args[3], (struct sockaddr *)args[4], (int *)args[5]);
case SYS_SHUTDOWN:
return sys_shutdown(args[0], args[1]);
case SYS_SETSOCKOPT:
return sys_setsockopt(args[0], args[1], args[2], (const void *)args[3], args[4]);
case SYS_GETSOCKOPT:
return sys_getsockopt(args[0], args[1], args[2], (void *)args[3], (int *)args[4]);
case SYS_SENDMSG:
return sys_sendmsg(args[0], (const struct msghdr *)args[1], args[2]);
case SYS_RECVMSG:
return sys_recvmsg(args[0], (struct msghdr *)args[1], args[2]);
case SYS_ACCEPT4:
return sys_accept4(args[0], (struct sockaddr *)args[1], (int *)args[2], args[3]);
case SYS_SENDMMSG:
return sys_sendmmsg(args[0], (struct mmsghdr *)args[1], args[2], args[3]);
default:
{
log_error("Unimplemented socketcall: %d", call);
return -L_EINVAL;
}
}
}
