static void iplink_get_mtu_srv(iplink_srv_t *srv, ipc_callid_t callid,
ipc_call_t *call)
{
int rc;
size_t mtu;
rc = srv->ops->get_mtu(srv, &mtu);
async_answer_1(callid, rc, mtu);
}
void remote_audio_mixer_get_item_level(
ddf_fun_t *fun, void *iface, ipc_callid_t callid, ipc_call_t *call)
{
audio_mixer_iface_t *mixer_iface = iface;
if (!mixer_iface->get_item_level) {
async_answer_0(callid, ENOTSUP);
return;
}
const unsigned item = DEV_IPC_GET_ARG1(*call);
unsigned current = 0;
const int ret =
mixer_iface->get_item_level(fun, item, ¤t);
async_answer_1(callid, ret, current);
}
void remote_config_space_read_32(ddf_fun_t *fun, void *iface, ipc_callid_t callid, ipc_call_t *call)
{
assert(iface);
pci_dev_iface_t *pci_iface = (pci_dev_iface_t *)iface;
if (pci_iface->config_space_read_32 == NULL) {
async_answer_0(callid, ENOTSUP);
return;
}
uint32_t address = DEV_IPC_GET_ARG1(*call);
uint32_t value;
int ret = pci_iface->config_space_read_32(fun, address, &value);
if (ret != EOK) {
async_answer_0(callid, ret);
} else {
async_answer_1(callid, EOK, value);
}
}
static void remote_ahci_get_block_size(ddf_fun_t *fun, void *iface,
ipc_callid_t callid, ipc_call_t *call)
{
const ahci_iface_t *ahci_iface = (ahci_iface_t *) iface;
if (ahci_iface->get_block_size == NULL) {
async_answer_0(callid, ENOTSUP);
return;
}
size_t blocks;
const int ret = ahci_iface->get_block_size(fun, &blocks);
if (ret != EOK)
async_answer_0(callid, ret);
else
async_answer_1(callid, EOK, blocks);
}
/** Process the battery_charge_level_get() request from the remote client
*
* @param fun The function from which the battery charge level is read
* @param ops The local ops structure
*
*/
static void
remote_battery_charge_level_get(ddf_fun_t *fun, void *ops, ipc_callid_t callid,
ipc_call_t *call)
{
const battery_dev_ops_t *bops = (battery_dev_ops_t *) ops;
if (bops->battery_charge_level_get == NULL) {
async_answer_0(callid, ENOTSUP);
return;
}
int battery_level;
const int rc = bops->battery_charge_level_get(fun, &battery_level);
if (rc != EOK)
async_answer_0(callid, rc);
else
async_answer_1(callid, rc, battery_level);
}
/** Process the write request from the remote client.
*
* Receive the write request's parameters from the remote client and pass them
* to the local interface. Return the result of the operation processed by the
* local interface to the remote client.
*
* @param fun The function to which the data are written.
* @param ops The local ops structure.
*/
static void
remote_char_write(ddf_fun_t *fun, void *ops, ipc_callid_t callid,
ipc_call_t *call)
{
char_dev_ops_t *char_dev_ops = (char_dev_ops_t *) ops;
ipc_callid_t cid;
size_t len;
if (!async_data_write_receive(&cid, &len)) {
/* TODO handle protocol error. */
async_answer_0(callid, EINVAL);
return;
}
if (!char_dev_ops->write) {
async_data_write_finalize(cid, NULL, 0);
async_answer_0(callid, ENOTSUP);
return;
}
if (len > MAX_CHAR_RW_COUNT)
len = MAX_CHAR_RW_COUNT;
char buf[MAX_CHAR_RW_COUNT];
async_data_write_finalize(cid, buf, len);
int ret = (*char_dev_ops->write)(fun, buf, len);
if (ret < 0) {
/* Some error occured. */
async_answer_0(callid, ret);
} else {
/*
* The operation was successful, return the number of data
* written.
*/
async_answer_1(callid, EOK, ret);
}
}
/** Handle VHC request for device name.
*
* @param dev Target virtual device.
* @param iid Caller id.
* @param icall The call with the request.
*/
static void ipc_get_name(usbvirt_device_t *dev,
ipc_callid_t iid, ipc_call_t *icall)
{
if (dev->name == NULL) {
async_answer_0(iid, ENOENT);
}
size_t size = str_size(dev->name);
ipc_callid_t callid;
size_t accepted_size;
if (!async_data_read_receive(&callid, &accepted_size)) {
async_answer_0(iid, EINVAL);
return;
}
if (accepted_size > size) {
accepted_size = size;
}
async_data_read_finalize(callid, dev->name, accepted_size);
async_answer_1(iid, EOK, accepted_size);
}
/** VFS_REGISTER protocol function.
*
* @param rid Hash of the call with the request.
* @param request Call structure with the request.
*
*/
void vfs_register(ipc_callid_t rid, ipc_call_t *request)
{
dprintf("Processing VFS_REGISTER request received from %p.\n",
request->in_phone_hash);
vfs_info_t *vfs_info;
int rc = async_data_write_accept((void **) &vfs_info, false,
sizeof(vfs_info_t), sizeof(vfs_info_t), 0, NULL);
if (rc != EOK) {
dprintf("Failed to deliver the VFS info into our AS, rc=%d.\n",
rc);
async_answer_0(rid, rc);
return;
}
/*
* Allocate and initialize a buffer for the fs_info structure.
*/
fs_info_t *fs_info = (fs_info_t *) malloc(sizeof(fs_info_t));
if (!fs_info) {
dprintf("Could not allocate memory for FS info.\n");
async_answer_0(rid, ENOMEM);
return;
}
link_initialize(&fs_info->fs_link);
fs_info->vfs_info = *vfs_info;
free(vfs_info);
dprintf("VFS info delivered.\n");
if (!vfs_info_sane(&fs_info->vfs_info)) {
free(fs_info);
async_answer_0(rid, EINVAL);
return;
}
fibril_mutex_lock(&fs_list_lock);
/*
* Check for duplicit registrations.
*/
if (fs_name_to_handle(fs_info->vfs_info.instance,
fs_info->vfs_info.name, false)) {
/*
* We already register a fs like this.
*/
dprintf("FS is already registered.\n");
fibril_mutex_unlock(&fs_list_lock);
free(fs_info);
async_answer_0(rid, EEXISTS);
return;
}
/*
* Add fs_info to the list of registered FS's.
*/
dprintf("Inserting FS into the list of registered file systems.\n");
list_append(&fs_info->fs_link, &fs_list);
/*
* Now we want the client to send us the IPC_M_CONNECT_TO_ME call so
* that a callback connection is created and we have a phone through
* which to forward VFS requests to it.
*/
fs_info->sess = async_callback_receive(EXCHANGE_PARALLEL);
if (!fs_info->sess) {
dprintf("Callback connection expected\n");
list_remove(&fs_info->fs_link);
fibril_mutex_unlock(&fs_list_lock);
free(fs_info);
async_answer_0(rid, EINVAL);
return;
}
dprintf("Callback connection to FS created.\n");
/*
* The client will want us to send him the address space area with PLB.
*/
size_t size;
ipc_callid_t callid;
if (!async_share_in_receive(&callid, &size)) {
dprintf("Unexpected call, method = %d\n", IPC_GET_IMETHOD(call));
list_remove(&fs_info->fs_link);
fibril_mutex_unlock(&fs_list_lock);
async_hangup(fs_info->sess);
free(fs_info);
async_answer_0(callid, EINVAL);
async_answer_0(rid, EINVAL);
return;
}
/*
* We can only send the client address space area PLB_SIZE bytes long.
*/
if (size != PLB_SIZE) {
dprintf("Client suggests wrong size of PFB, size = %d\n", size);
list_remove(&fs_info->fs_link);
fibril_mutex_unlock(&fs_list_lock);
async_hangup(fs_info->sess);
free(fs_info);
async_answer_0(callid, EINVAL);
async_answer_0(rid, EINVAL);
return;
}
/*
* Commit to read-only sharing the PLB with the client.
*/
(void) async_share_in_finalize(callid, plb,
AS_AREA_READ | AS_AREA_CACHEABLE);
dprintf("Sharing PLB.\n");
/*
* That was it. The FS has been registered.
* In reply to the VFS_REGISTER request, we assign the client file
* system a global file system handle.
*/
fs_info->fs_handle = (fs_handle_t) atomic_postinc(&fs_handle_next);
async_answer_1(rid, EOK, (sysarg_t) fs_info->fs_handle);
fibril_condvar_broadcast(&fs_list_cv);
fibril_mutex_unlock(&fs_list_lock);
dprintf("\"%.*s\" filesystem successfully registered, handle=%d.\n",
FS_NAME_MAXLEN, fs_info->vfs_info.name, fs_info->fs_handle);
}
static void file_bd_connection(ipc_callid_t iid, ipc_call_t *icall, void *arg)
{
void *fs_va = NULL;
ipc_callid_t callid;
ipc_call_t call;
sysarg_t method;
size_t comm_size;
unsigned int flags;
int retval;
uint64_t ba;
size_t cnt;
/* Answer the IPC_M_CONNECT_ME_TO call. */
async_answer_0(iid, EOK);
if (!async_share_out_receive(&callid, &comm_size, &flags)) {
async_answer_0(callid, EHANGUP);
return;
}
(void) async_share_out_finalize(callid, &fs_va);
if (fs_va == AS_MAP_FAILED) {
async_answer_0(callid, EHANGUP);
return;
}
while (true) {
callid = async_get_call(&call);
method = IPC_GET_IMETHOD(call);
if (!method) {
/* The other side has hung up. */
async_answer_0(callid, EOK);
return;
}
switch (method) {
case BD_READ_BLOCKS:
ba = MERGE_LOUP32(IPC_GET_ARG1(call),
IPC_GET_ARG2(call));
cnt = IPC_GET_ARG3(call);
if (cnt * block_size > comm_size) {
retval = ELIMIT;
break;
}
retval = file_bd_read_blocks(ba, cnt, fs_va);
break;
case BD_WRITE_BLOCKS:
ba = MERGE_LOUP32(IPC_GET_ARG1(call),
IPC_GET_ARG2(call));
cnt = IPC_GET_ARG3(call);
if (cnt * block_size > comm_size) {
retval = ELIMIT;
break;
}
retval = file_bd_write_blocks(ba, cnt, fs_va);
break;
case BD_GET_BLOCK_SIZE:
async_answer_1(callid, EOK, block_size);
continue;
case BD_GET_NUM_BLOCKS:
async_answer_2(callid, EOK, LOWER32(num_blocks),
UPPER32(num_blocks));
continue;
default:
retval = EINVAL;
break;
}
async_answer_0(callid, retval);
}
}
static void tcp_sock_recvfrom(tcp_client_t *client, ipc_callid_t callid, ipc_call_t call)
{
int socket_id;
int flags;
size_t addr_length, length;
socket_core_t *sock_core;
tcp_sockdata_t *socket;
ipc_call_t answer;
ipc_callid_t rcallid;
size_t data_len;
struct sockaddr_in addr;
tcp_sock_t *rsock;
int rc;
log_msg(LVL_DEBUG, "%p: tcp_sock_recv[from]()", client);
socket_id = SOCKET_GET_SOCKET_ID(call);
flags = SOCKET_GET_FLAGS(call);
sock_core = socket_cores_find(&client->sockets, socket_id);
if (sock_core == NULL) {
async_answer_0(callid, ENOTSOCK);
return;
}
socket = (tcp_sockdata_t *)sock_core->specific_data;
fibril_mutex_lock(&socket->lock);
if (socket->conn == NULL) {
fibril_mutex_unlock(&socket->lock);
async_answer_0(callid, ENOTCONN);
return;
}
(void)flags;
log_msg(LVL_DEBUG, "tcp_sock_recvfrom(): lock recv_buffer_lock");
fibril_mutex_lock(&socket->recv_buffer_lock);
while (socket->recv_buffer_used == 0 && socket->recv_error == TCP_EOK) {
log_msg(LVL_DEBUG, "wait for recv_buffer_cv + recv_buffer_used != 0");
fibril_condvar_wait(&socket->recv_buffer_cv,
&socket->recv_buffer_lock);
}
log_msg(LVL_DEBUG, "Got data in sock recv_buffer");
data_len = socket->recv_buffer_used;
rc = socket->recv_error;
switch (socket->recv_error) {
case TCP_EOK:
rc = EOK;
break;
case TCP_ENOTEXIST:
case TCP_ECLOSING:
rc = ENOTCONN;
break;
case TCP_ERESET:
rc = ECONNABORTED;
break;
default:
assert(false);
}
log_msg(LVL_DEBUG, "**** recv result -> %d", rc);
if (rc != EOK) {
fibril_mutex_unlock(&socket->recv_buffer_lock);
fibril_mutex_unlock(&socket->lock);
async_answer_0(callid, rc);
return;
}
if (IPC_GET_IMETHOD(call) == NET_SOCKET_RECVFROM) {
/* Fill addr */
rsock = &socket->conn->ident.foreign;
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = host2uint32_t_be(rsock->addr.ipv4);
addr.sin_port = host2uint16_t_be(rsock->port);
log_msg(LVL_DEBUG, "addr read receive");
if (!async_data_read_receive(&rcallid, &addr_length)) {
fibril_mutex_unlock(&socket->recv_buffer_lock);
fibril_mutex_unlock(&socket->lock);
async_answer_0(callid, EINVAL);
return;
}
if (addr_length > sizeof(addr))
addr_length = sizeof(addr);
log_msg(LVL_DEBUG, "addr read finalize");
rc = async_data_read_finalize(rcallid, &addr, addr_length);
if (rc != EOK) {
fibril_mutex_unlock(&socket->recv_buffer_lock);
fibril_mutex_unlock(&socket->lock);
async_answer_0(callid, EINVAL);
return;
}
}
log_msg(LVL_DEBUG, "data read receive");
if (!async_data_read_receive(&rcallid, &length)) {
fibril_mutex_unlock(&socket->recv_buffer_lock);
fibril_mutex_unlock(&socket->lock);
async_answer_0(callid, EINVAL);
return;
}
if (length > data_len)
length = data_len;
log_msg(LVL_DEBUG, "data read finalize");
rc = async_data_read_finalize(rcallid, socket->recv_buffer, length);
socket->recv_buffer_used -= length;
log_msg(LVL_DEBUG, "tcp_sock_recvfrom: %zu left in buffer",
socket->recv_buffer_used);
if (socket->recv_buffer_used > 0) {
memmove(socket->recv_buffer, socket->recv_buffer + length,
socket->recv_buffer_used);
tcp_sock_notify_data(socket->sock_core);
}
fibril_condvar_broadcast(&socket->recv_buffer_cv);
if (length < data_len && rc == EOK)
rc = EOVERFLOW;
SOCKET_SET_READ_DATA_LENGTH(answer, length);
async_answer_1(callid, EOK, IPC_GET_ARG1(answer));
fibril_mutex_unlock(&socket->recv_buffer_lock);
fibril_mutex_unlock(&socket->lock);
}
/**
* Server side implementation of the hound protocol. IPC connection handler.
* @param iid initial call id
* @param icall pointer to initial call structure.
* @param arg (unused)
*/
void hound_connection_handler(ipc_callid_t iid, ipc_call_t *icall, void *arg)
{
/* Accept connection if there is a valid iface*/
if (server_iface) {
async_answer_0(iid, EOK);
} else {
async_answer_0(iid, ENOTSUP);
return;
}
while (1) {
ipc_call_t call;
ipc_callid_t callid = async_get_call(&call);
switch (IPC_GET_IMETHOD(call)) {
case IPC_M_HOUND_CONTEXT_REGISTER: {
/* check interface functions */
if (!server_iface || !server_iface->add_context) {
async_answer_0(callid, ENOTSUP);
break;
}
bool record = IPC_GET_ARG1(call);
void *name;
/* Get context name */
int ret =
async_data_write_accept(&name, true, 0, 0, 0, 0);
if (ret != EOK) {
async_answer_0(callid, ret);
break;
}
hound_context_id_t id = 0;
ret = server_iface->add_context(server_iface->server,
&id, name, record);
/** new context should create a copy */
free(name);
if (ret != EOK) {
async_answer_0(callid, ret);
} else {
async_answer_1(callid, EOK, id);
}
break;
}
case IPC_M_HOUND_CONTEXT_UNREGISTER: {
/* check interface functions */
if (!server_iface || !server_iface->rem_context) {
async_answer_0(callid, ENOTSUP);
break;
}
/* get id, 1st param */
hound_context_id_t id = IPC_GET_ARG1(call);
const int ret =
server_iface->rem_context(server_iface->server, id);
async_answer_0(callid, ret);
break;
}
case IPC_M_HOUND_GET_LIST: {
/* check interface functions */
if (!server_iface || !server_iface->get_list) {
async_answer_0(callid, ENOTSUP);
break;
}
const char **list = NULL;
const int flags = IPC_GET_ARG1(call);
size_t count = IPC_GET_ARG2(call);
const bool conn = IPC_GET_ARG3(call);
char *conn_name = NULL;
int ret = EOK;
/* get connected actor name if provided */
if (conn)
ret = async_data_write_accept(
(void**)&conn_name, true, 0, 0, 0, 0);
if (ret == EOK)
ret = server_iface->get_list(
server_iface->server, &list, &count,
conn_name, flags);
free(conn_name);
/* Alloc string sizes array */
size_t *sizes = NULL;
if (count)
sizes = calloc(count, sizeof(size_t));
if (count && !sizes)
ret = ENOMEM;
async_answer_1(callid, ret, count);
/* We are done */
if (count == 0 || ret != EOK)
break;
/* Prepare sizes table */
for (unsigned i = 0; i < count; ++i)
sizes[i] = str_size(list[i]);
/* Send sizes table */
ipc_callid_t id;
if (async_data_read_receive(&id, NULL)) {
ret = async_data_read_finalize(id, sizes,
count * sizeof(size_t));
}
free(sizes);
/* Proceed to send names */
for (unsigned i = 0; i < count; ++i) {
size_t size = str_size(list[i]);
ipc_callid_t id;
if (ret == EOK &&
async_data_read_receive(&id, NULL)) {
ret = async_data_read_finalize(id,
list[i], size);
}
free(list[i]);
}
free(list);
break;
}
case IPC_M_HOUND_CONNECT: {
/* check interface functions */
if (!server_iface || !server_iface->connect) {
async_answer_0(callid, ENOTSUP);
break;
}
void *source = NULL;
void *sink = NULL;
/* read source name */
int ret =
async_data_write_accept(&source, true, 0, 0, 0, 0);
/* read sink name */
if (ret == EOK)
ret = async_data_write_accept(&sink,
true, 0, 0, 0, 0);
if (ret == EOK)
ret = server_iface->connect(
server_iface->server, source, sink);
free(source);
free(sink);
async_answer_0(callid, ret);
break;
}
case IPC_M_HOUND_DISCONNECT: {
/* check interface functions */
if (!server_iface || !server_iface->disconnect) {
async_answer_0(callid, ENOTSUP);
break;
}
void *source = NULL;
void *sink = NULL;
/* read source name */
int ret =
async_data_write_accept(&source, true, 0, 0, 0, 0);
/*read sink name */
if (ret == EOK)
ret = async_data_write_accept(&sink,
true, 0, 0, 0, 0);
if (ret == EOK)
ret = server_iface->connect(
server_iface->server, source, sink);
free(source);
free(sink);
async_answer_0(callid, ret);
break;
}
case IPC_M_HOUND_STREAM_ENTER: {
/* check interface functions */
if (!server_iface || !server_iface->is_record_context
|| !server_iface->add_stream
|| !server_iface->rem_stream) {
async_answer_0(callid, ENOTSUP);
break;
}
/* get parameters */
hound_context_id_t id = IPC_GET_ARG1(call);
const int flags = IPC_GET_ARG2(call);
const format_convert_t c = {.arg = IPC_GET_ARG3(call)};
const pcm_format_t f = {
.sampling_rate = c.f.rate * 100,
.channels = c.f.channels,
.sample_format = c.f.format,
};
size_t bsize = IPC_GET_ARG4(call);
void *stream;
int ret = server_iface->add_stream(server_iface->server,
id, flags, f, bsize, &stream);
if (ret != EOK) {
async_answer_0(callid, ret);
break;
}
const bool rec = server_iface->is_record_context(
server_iface->server, id);
if (rec) {
if(server_iface->stream_data_read) {
async_answer_0(callid, EOK);
/* start answering read calls */
hound_server_write_data(stream);
server_iface->rem_stream(
server_iface->server, stream);
} else {
async_answer_0(callid, ENOTSUP);
}
} else {
if (server_iface->stream_data_write) {
async_answer_0(callid, EOK);
/* accept write calls */
hound_server_read_data(stream);
server_iface->rem_stream(
server_iface->server, stream);
} else {
async_answer_0(callid, ENOTSUP);
}
}
break;
}
case IPC_M_HOUND_STREAM_EXIT:
case IPC_M_HOUND_STREAM_DRAIN:
/* Stream exit/drain is only allowed in stream context*/
async_answer_0(callid, EINVAL);
break;
default:
async_answer_0(callid, ENOTSUP);
return;
}
}
}
/**
* Read data and push it to the stream.
* @param stream target stream, will push data there.
*/
static void hound_server_read_data(void *stream)
{
ipc_callid_t callid;
ipc_call_t call;
size_t size = 0;
int ret_answer = EOK;
/* accept data write or drain */
while (async_data_write_receive_call(&callid, &call, &size)
|| (IPC_GET_IMETHOD(call) == IPC_M_HOUND_STREAM_DRAIN)) {
/* check drain first */
if (IPC_GET_IMETHOD(call) == IPC_M_HOUND_STREAM_DRAIN) {
int ret = ENOTSUP;
if (server_iface->drain_stream)
ret = server_iface->drain_stream(stream);
async_answer_0(callid, ret);
continue;
}
/* there was an error last time */
if (ret_answer != EOK) {
async_answer_0(callid, ret_answer);
continue;
}
char *buffer = malloc(size);
if (!buffer) {
async_answer_0(callid, ENOMEM);
continue;
}
const int ret = async_data_write_finalize(callid, buffer, size);
if (ret == EOK) {
/* push data to stream */
ret_answer = server_iface->stream_data_write(
stream, buffer, size);
}
}
const int ret = IPC_GET_IMETHOD(call) == IPC_M_HOUND_STREAM_EXIT
? EOK : EINVAL;
async_answer_0(callid, ret);
}
