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kernel_liteos_a/syscall/net_syscall.c

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/*
* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
* Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "syscall_pub.h"
#include "stdlib.h"
#include "fs_file.h"
#include "fs/fs.h"
#include "los_process_pri.h"
#include "los_signal.h"
#include "los_syscall.h"
#include "los_vm_map.h"
#include "user_copy.h"
#ifdef LOSCFG_NET_LWIP_SACK
#include "lwip/sockets.h"
#define SOCKET_U2K(s) \
do { \
s = GetAssociatedSystemFd(s); \
if (s == VFS_ERROR) { \
set_errno(EBADF); \
return -get_errno(); \
} \
} while (0)
#define SOCKET_K2U(s) \
do { \
int fd = AllocAndAssocProcessFd(s, MIN_START_FD); \
if (fd == -1) { \
closesocket(s); \
set_errno(EMFILE); \
s = -EMFILE; \
} else { \
s = fd; \
} \
} while (0)
int SysSocket(int domain, int type, int protocol)
{
int ret;
ret = socket(domain, type, protocol);
if (ret == -1) {
return -get_errno();
}
SOCKET_K2U(ret);
return ret;
}
int SysBind(int s, const struct sockaddr *name, socklen_t namelen)
{
int ret;
SOCKET_U2K(s);
CHECK_ASPACE(name, namelen);
DUP_FROM_USER(name, namelen);
if (name == NULL) {
set_errno(EFAULT);
ret = -1;
} else {
ret = bind(s, name, namelen);
}
FREE_DUP(name);
if (ret == -1) {
return -get_errno();
}
return ret;
}
int SysConnect(int s, const struct sockaddr *name, socklen_t namelen)
{
int ret;
SOCKET_U2K(s);
CHECK_ASPACE(name, namelen);
DUP_FROM_USER(name, namelen);
if (name == NULL) {
set_errno(EFAULT);
ret = -1;
} else {
ret = connect(s, name, namelen);
}
FREE_DUP(name);
if (ret == -1) {
return -get_errno();
}
return ret;
}
int SysListen(int sockfd, int backlog)
{
int ret;
SOCKET_U2K(sockfd);
ret = listen(sockfd, backlog);
if (ret == -1) {
return -get_errno();
}
return ret;
}
int SysAccept(int socket, struct sockaddr *address,
socklen_t *addressLen)
{
int ret;
SOCKET_U2K(socket);
CHECK_ASPACE(addressLen, sizeof(socklen_t));
CPY_FROM_USER(addressLen);
CHECK_ASPACE(address, LEN(addressLen));
DUP_FROM_USER_NOCOPY(address, LEN(addressLen));
ret = accept(socket, address, addressLen);
if (ret == -1) {
FREE_DUP(address);
return -get_errno();
}
CPY_TO_USER(addressLen, close(ret); FREE_DUP(address));
DUP_TO_USER(address, LEN(addressLen), close(ret); FREE_DUP(address));
FREE_DUP(address);
SOCKET_K2U(ret);
return ret;
}
int SysGetSockName(int s, struct sockaddr *name, socklen_t *namelen)
{
int ret;
SOCKET_U2K(s);
CHECK_ASPACE(namelen, sizeof(socklen_t));
CPY_FROM_USER(namelen);
CHECK_ASPACE(name, LEN(namelen));
DUP_FROM_USER_NOCOPY(name, LEN(namelen));
if (name == NULL || namelen == NULL) {
set_errno(EFAULT);
ret = -1;
} else {
ret = getsockname(s, name, namelen);
}
if (ret == -1) {
FREE_DUP(name);
return -get_errno();
}
CPY_TO_USER(namelen, FREE_DUP(name));
DUP_TO_USER(name, LEN(namelen), FREE_DUP(name));
FREE_DUP(name);
return ret;
}
int SysGetPeerName(int s, struct sockaddr *name, socklen_t *namelen)
{
int ret;
SOCKET_U2K(s);
CHECK_ASPACE(namelen, sizeof(socklen_t));
CPY_FROM_USER(namelen);
CHECK_ASPACE(name, LEN(namelen));
DUP_FROM_USER_NOCOPY(name, LEN(namelen));
if (name == NULL || namelen == NULL) {
set_errno(EFAULT);
ret = -1;
} else {
ret = getpeername(s, name, namelen);
}
if (ret == -1) {
FREE_DUP(name);
return -get_errno();
}
CPY_TO_USER(namelen, FREE_DUP(name));
DUP_TO_USER(name, LEN(namelen), FREE_DUP(name));
FREE_DUP(name);
return ret;
}
ssize_t SysSend(int s, const void *dataptr, size_t size, int flags)
{
int ret;
SOCKET_U2K(s);
CHECK_ASPACE(dataptr, size);
DUP_FROM_USER(dataptr, size);
if (dataptr == NULL) {
set_errno(EFAULT);
ret = -1;
} else {
ret = send(s, dataptr, size, flags);
}
FREE_DUP(dataptr);
if (ret == -1) {
return -get_errno();
}
return ret;
}
ssize_t SysSendTo(int s, const void *dataptr, size_t size, int flags,
const struct sockaddr *to, socklen_t tolen)
{
int ret;
SOCKET_U2K(s);
CHECK_ASPACE(dataptr, size);
CHECK_ASPACE(to, tolen);
DUP_FROM_USER(dataptr, size);
DUP_FROM_USER(to, tolen, FREE_DUP(dataptr));
if (dataptr == NULL) {
set_errno(EFAULT);
ret = -1;
} else {
ret = sendto(s, dataptr, size, flags, to, tolen);
}
FREE_DUP(dataptr);
FREE_DUP(to);
if (ret == -1) {
return -get_errno();
}
return ret;
}
ssize_t SysRecv(int socket, void *buffer, size_t length, int flags)
{
int ret;
SOCKET_U2K(socket);
CHECK_ASPACE(buffer, length);
DUP_FROM_USER_NOCOPY(buffer, length);
if (buffer == NULL) {
set_errno(EFAULT);
ret = -1;
} else {
ret = recv(socket, buffer, length, flags);
}
if (ret == -1) {
FREE_DUP(buffer);
return -get_errno();
}
DUP_TO_USER(buffer, ret, FREE_DUP(buffer));
FREE_DUP(buffer);
return ret;
}
ssize_t SysRecvFrom(int socket, void *buffer, size_t length,
int flags, struct sockaddr *address,
socklen_t *addressLen)
{
int ret;
SOCKET_U2K(socket);
CHECK_ASPACE(buffer, length);
CHECK_ASPACE(addressLen, sizeof(socklen_t));
CPY_FROM_USER(addressLen);
CHECK_ASPACE(address, LEN(addressLen));
DUP_FROM_USER_NOCOPY(address, LEN(addressLen));
DUP_FROM_USER_NOCOPY(buffer, length, FREE_DUP(address));
if (buffer == NULL || (address != NULL && addressLen == NULL)) {
set_errno(EFAULT);
ret = -1;
} else {
ret = recvfrom(socket, buffer, length, flags, address, addressLen);
}
if (ret == -1) {
FREE_DUP(address);
FREE_DUP(buffer);
return -get_errno();
}
CPY_TO_USER(addressLen, FREE_DUP(address); FREE_DUP(buffer));
DUP_TO_USER(address, LEN(addressLen), FREE_DUP(address); FREE_DUP(buffer));
DUP_TO_USER(buffer, ret, FREE_DUP(address); FREE_DUP(buffer));
FREE_DUP(address);
FREE_DUP(buffer);
return ret;
}
int SysShutdown(int socket, int how)
{
int ret;
SOCKET_U2K(socket);
ret = shutdown(socket, how);
if (ret == -1) {
return -get_errno();
}
return ret;
}
int SysSetSockOpt(int socket, int level, int optName,
const void *optValue, socklen_t optLen)
{
int ret;
SOCKET_U2K(socket);
CHECK_ASPACE(optValue, optLen);
DUP_FROM_USER(optValue, optLen);
ret = setsockopt(socket, level, optName, optValue, optLen);
FREE_DUP(optValue);
if (ret == -1) {
return -get_errno();
}
return ret;
}
int SysGetSockOpt(int sockfd, int level, int optName,
void *optValue, socklen_t *optLen)
{
int ret;
SOCKET_U2K(sockfd);
CHECK_ASPACE(optLen, sizeof(socklen_t));
CPY_FROM_USER(optLen);
CHECK_ASPACE(optValue, LEN(optLen));
DUP_FROM_USER_NOCOPY(optValue, LEN(optLen));
if (optLen == NULL) {
set_errno(EFAULT);
ret = -1;
} else {
ret = getsockopt(sockfd, level, optName, optValue, optLen);
}
if (ret == -1) {
FREE_DUP(optValue);
return -get_errno();
}
CPY_TO_USER(optLen, FREE_DUP(optValue));
DUP_TO_USER(optValue, LEN(optLen), FREE_DUP(optValue));
FREE_DUP(optValue);
return ret;
}
ssize_t SysSendMsg(int s, const struct msghdr *message, int flags)
{
int ret;
SOCKET_U2K(s);
CHECK_ASPACE(message, sizeof(struct msghdr));
CPY_FROM_CONST_USER(struct msghdr, message);
if (message && message->msg_iovlen > IOV_MAX) {
set_errno(EMSGSIZE);
return -get_errno();
}
CHECK_FIELD_ASPACE(message, msg_name, message->msg_namelen);
CHECK_FIELD_ASPACE(message, msg_iov, message->msg_iovlen * sizeof(struct iovec));
CHECK_FIELD_ASPACE(message, msg_control, message->msg_controllen);
DUP_FIELD_FROM_USER(message, msg_iov, message->msg_iovlen * sizeof(struct iovec));
CHECK_ARRAY_FIELD_ASPACE(message, msg_iov, message->msg_iovlen, iov_base, iov_len,
FREE_DUP_FIELD(message, msg_iov));
DUP_FIELD_FROM_USER(message, msg_name, message->msg_namelen,
FREE_DUP_FIELD(message, msg_iov));
DUP_FIELD_FROM_USER(message, msg_control, message->msg_controllen,
FREE_DUP_FIELD(message, msg_iov);
FREE_DUP_FIELD(message, msg_name));
DUP_ARRAY_FIELD_FROM_USER(message, msg_iov, message->msg_iovlen, iov_base, iov_len,
FREE_DUP_FIELD(message, msg_control);
FREE_DUP_FIELD(message, msg_iov);
FREE_DUP_FIELD(message, msg_name));
if (message == NULL) {
set_errno(EFAULT);
ret = -1;
} else {
ret = sendmsg(s, message, flags);
}
FREE_DUP_ARRAY_FIELD(message, msg_iov, message->msg_iovlen, iov_base);
FREE_DUP_FIELD(message, msg_control);
FREE_DUP_FIELD(message, msg_iov);
FREE_DUP_FIELD(message, msg_name);
if (ret == -1) {
return -get_errno();
}
return ret;
}
ssize_t SysRecvMsg(int s, struct msghdr *message, int flags)
{
int ret;
SOCKET_U2K(s);
CHECK_ASPACE(message, sizeof(struct msghdr));
CPY_FROM_NONCONST_USER(message);
if (message && message->msg_iovlen > IOV_MAX) {
set_errno(EMSGSIZE);
return -get_errno();
}
CHECK_FIELD_ASPACE(message, msg_name, message->msg_namelen);
CHECK_FIELD_ASPACE(message, msg_iov, message->msg_iovlen * sizeof(struct iovec));
CHECK_FIELD_ASPACE(message, msg_control, message->msg_controllen);
DUP_FIELD_FROM_USER(message, msg_iov, message->msg_iovlen * sizeof(struct iovec));
CHECK_ARRAY_FIELD_ASPACE(message, msg_iov, message->msg_iovlen, iov_base, iov_len,
FREE_DUP_FIELD(message, msg_iov));
DUP_FIELD_FROM_USER_NOCOPY(message, msg_name, message->msg_namelen,
FREE_DUP_FIELD(message, msg_iov));
DUP_FIELD_FROM_USER_NOCOPY(message, msg_control, message->msg_controllen,
FREE_DUP_FIELD(message, msg_iov);
FREE_DUP_FIELD(message, msg_name));
DUP_ARRAY_FIELD_FROM_USER_NOCOPY(message, msg_iov, message->msg_iovlen, iov_base, iov_len,
FREE_DUP_FIELD(message, msg_control);
FREE_DUP_FIELD(message, msg_iov);
FREE_DUP_FIELD(message, msg_name));
if (message == NULL) {
set_errno(EFAULT);
ret = -1;
} else {
ret = recvmsg(s, message, flags);
}
if (ret == -1) {
goto OUT;
}
CPY_TO_USER(message, ret = -1; goto OUT);
DUP_FIELD_TO_USER(message, msg_control, message->msg_controllen, ret = -1; goto OUT);
DUP_FIELD_TO_USER(message, msg_iov, message->msg_iovlen * sizeof(struct iovec), ret = -1; goto OUT);
DUP_FIELD_TO_USER(message, msg_name, message->msg_namelen, ret = -1; goto OUT);
DUP_ARRAY_FIELD_TO_USER(message, msg_iov, message->msg_iovlen, iov_base, iov_len, ret = -1; goto OUT);
OUT:
FREE_DUP_ARRAY_FIELD(message, msg_iov, message->msg_iovlen, iov_base);
FREE_DUP_FIELD(message, msg_control);
FREE_DUP_FIELD(message, msg_iov);
FREE_DUP_FIELD(message, msg_name);
return (ret == -1) ? -get_errno() : ret;
}
#endif
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