/trunk/kernel/generic/include/ipc/ipc.h |
---|
111,6 → 111,25 |
/* System-specific methods - only through special syscalls |
* These methods have special behaviour |
*/ |
/** Clone connection. |
* |
* The calling task clones one of its phones for the callee. |
* |
* - ARG1 - The caller sets ARG1 to the phone of the cloned connection. |
* - The callee gets the new phone from ARG1. |
* - on answer, the callee acknowledges the new connection by sending EOK back |
* or the kernel closes it |
*/ |
#define IPC_M_CONNECTION_CLONE 1 |
/** Protocol for CONNECT - ME |
* |
* Through this call, the recipient learns about the new cloned connection. |
* |
* - ARG5 - the kernel sets ARG5 to contain the hash of the used phone |
* - on asnwer, the callee acknowledges the new connection by sending EOK back |
* or the kernel closes it |
*/ |
#define IPC_M_CONNECT_ME 2 |
/** Protocol for CONNECT - TO - ME |
* |
* Calling process asks the callee to create a callback connection, |
127,7 → 146,7 |
* - the allocated phoneid is passed to userspace |
* (on the receiving side) as ARG5 of the call. |
*/ |
#define IPC_M_CONNECT_TO_ME 1 |
#define IPC_M_CONNECT_TO_ME 3 |
/** Protocol for CONNECT - ME - TO |
* |
* Calling process asks the callee to create for him a new connection. |
145,11 → 164,11 |
* - recepient may forward message. |
* |
*/ |
#define IPC_M_CONNECT_ME_TO 2 |
#define IPC_M_CONNECT_ME_TO 4 |
/** This message is sent to answerbox when the phone |
* is hung up |
*/ |
#define IPC_M_PHONE_HUNGUP 3 |
#define IPC_M_PHONE_HUNGUP 5 |
/** Send as_area over IPC. |
* - ARG1 - source as_area base address |
159,7 → 178,7 |
* on answer, the recipient must set: |
* - ARG1 - dst as_area base adress |
*/ |
#define IPC_M_SHARE_OUT 4 |
#define IPC_M_SHARE_OUT 6 |
/** Receive as_area over IPC. |
* - ARG1 - destination as_area base address |
171,7 → 190,7 |
* - ARG1 - source as_area base address |
* - ARG2 - flags that will be used for sharing |
*/ |
#define IPC_M_SHARE_IN 5 |
#define IPC_M_SHARE_IN 7 |
/** Send data to another address space over IPC. |
* - ARG1 - source address space virtual address |
182,7 → 201,7 |
* - ARG1 - final destination address space virtual address |
* - ARG2 - final size of data to be copied |
*/ |
#define IPC_M_DATA_WRITE 6 |
#define IPC_M_DATA_WRITE 8 |
/** Receive data from another address space over IPC. |
* - ARG1 - destination virtual address in the source address space |
193,13 → 212,13 |
* - ARG1 - source virtual address in the destination address space |
* - ARG2 - final size of data to be copied |
*/ |
#define IPC_M_DATA_READ 7 |
#define IPC_M_DATA_READ 9 |
/** Debug the recipient. |
* - ARG1 - specifies the debug method (from udebug_method_t) |
* - other arguments are specific to the debug method |
*/ |
#define IPC_M_DEBUG_ALL 8 |
#define IPC_M_DEBUG_ALL 10 |
/* Well-known methods */ |
#define IPC_M_LAST_SYSTEM 511 |
/trunk/kernel/generic/include/ipc/ipcrsc.h |
---|
35,8 → 35,11 |
#ifndef KERN_IPCRSC_H_ |
#define KERN_IPCRSC_H_ |
#include <proc/task.h> |
#include <ipc/ipc.h> |
extern call_t * get_call(unative_t callid); |
extern int phone_alloc(void); |
extern int phone_alloc(task_t *t); |
extern void phone_connect(int phoneid, answerbox_t *box); |
extern void phone_dealloc(int phoneid); |
/trunk/kernel/generic/src/ipc/ipcrsc.c |
---|
160,27 → 160,29 |
return result; |
} |
/** Allocate new phone slot in the current TASK structure. |
/** Allocate new phone slot in the specified task. |
* |
* @param t Task for which to allocate a new phone. |
* |
* @return New phone handle or -1 if the phone handle limit is |
* exceeded. |
*/ |
int phone_alloc(void) |
int phone_alloc(task_t *t) |
{ |
int i; |
spinlock_lock(&TASK->lock); |
spinlock_lock(&t->lock); |
for (i = 0; i < IPC_MAX_PHONES; i++) { |
if (TASK->phones[i].state == IPC_PHONE_HUNGUP && |
atomic_get(&TASK->phones[i].active_calls) == 0) |
TASK->phones[i].state = IPC_PHONE_FREE; |
if (t->phones[i].state == IPC_PHONE_HUNGUP && |
atomic_get(&t->phones[i].active_calls) == 0) |
t->phones[i].state = IPC_PHONE_FREE; |
if (TASK->phones[i].state == IPC_PHONE_FREE) { |
TASK->phones[i].state = IPC_PHONE_CONNECTING; |
if (t->phones[i].state == IPC_PHONE_FREE) { |
t->phones[i].state = IPC_PHONE_CONNECTING; |
break; |
} |
} |
spinlock_unlock(&TASK->lock); |
spinlock_unlock(&t->lock); |
if (i == IPC_MAX_PHONES) |
return -1; |
/trunk/kernel/generic/src/ipc/kbox.c |
---|
248,7 → 248,7 |
return EINVAL; |
} |
newphid = phone_alloc(); |
newphid = phone_alloc(TASK); |
if (newphid < 0) { |
mutex_unlock(&ta->kb.cleanup_lock); |
return ELIMIT; |
/trunk/kernel/generic/src/ipc/sysipc.c |
---|
93,6 → 93,8 |
static inline int method_is_forwardable(unative_t method) |
{ |
switch (method) { |
case IPC_M_CONNECTION_CLONE: |
case IPC_M_CONNECT_ME: |
case IPC_M_PHONE_HUNGUP: |
/* This message is meant only for the original recipient. */ |
return 0; |
140,6 → 142,8 |
static inline int answer_need_old(call_t *call) |
{ |
switch (IPC_GET_METHOD(call->data)) { |
case IPC_M_CONNECTION_CLONE: |
case IPC_M_CONNECT_ME: |
case IPC_M_CONNECT_TO_ME: |
case IPC_M_CONNECT_ME_TO: |
case IPC_M_SHARE_OUT: |
182,9 → 186,48 |
if (!olddata) |
return 0; |
if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) { |
if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECTION_CLONE) { |
phoneid = IPC_GET_ARG1(*olddata); |
phone_t *phone = &TASK->phones[phoneid]; |
if (IPC_GET_RETVAL(answer->data) != EOK) { |
/* |
* The recipient of the cloned phone rejected the offer. |
* In this case, the connection was established at the |
* request time and therefore we need to slam the phone. |
* We don't merely hangup as that would result in |
* sending IPC_M_HUNGUP to the third party on the |
* other side of the cloned phone. |
*/ |
mutex_lock(&phone->lock); |
if (phone->state == IPC_PHONE_CONNECTED) { |
spinlock_lock(&phone->callee->lock); |
list_remove(&phone->link); |
phone->state = IPC_PHONE_SLAMMED; |
spinlock_unlock(&phone->callee->lock); |
} |
mutex_unlock(&phone->lock); |
} |
} else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME) { |
phone_t *phone = (phone_t *)IPC_GET_ARG5(*olddata); |
if (IPC_GET_RETVAL(answer->data) != EOK) { |
/* |
* The other party on the cloned phoned rejected our |
* request for connection on the protocol level. |
* We need to break the connection without sending |
* IPC_M_HUNGUP back. |
*/ |
mutex_lock(&phone->lock); |
if (phone->state == IPC_PHONE_CONNECTED) { |
spinlock_lock(&phone->callee->lock); |
list_remove(&phone->link); |
phone->state = IPC_PHONE_SLAMMED; |
spinlock_unlock(&phone->callee->lock); |
} |
mutex_unlock(&phone->lock); |
} |
} else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_TO_ME) { |
phoneid = IPC_GET_ARG5(*olddata); |
if (IPC_GET_RETVAL(answer->data)) { |
if (IPC_GET_RETVAL(answer->data) != EOK) { |
/* The connection was not accepted */ |
phone_dealloc(phoneid); |
} else { |
196,7 → 239,7 |
} |
} else if (IPC_GET_METHOD(*olddata) == IPC_M_CONNECT_ME_TO) { |
/* If the users accepted call, connect */ |
if (!IPC_GET_RETVAL(answer->data)) { |
if (IPC_GET_RETVAL(answer->data) == EOK) { |
ipc_phone_connect((phone_t *) IPC_GET_ARG5(*olddata), |
&TASK->answerbox); |
} |
308,8 → 351,48 |
int rc; |
switch (IPC_GET_METHOD(call->data)) { |
case IPC_M_CONNECTION_CLONE: { |
phone_t *cloned_phone; |
GET_CHECK_PHONE(cloned_phone, IPC_GET_ARG1(call->data), |
return ENOENT); |
if (cloned_phone < phone) { |
mutex_lock(&cloned_phone->lock); |
mutex_lock(&phone->lock); |
} else { |
mutex_lock(&phone->lock); |
mutex_lock(&cloned_phone->lock); |
} |
if ((cloned_phone->state != IPC_PHONE_CONNECTED) || |
phone->state != IPC_PHONE_CONNECTED) { |
mutex_unlock(&cloned_phone->lock); |
mutex_unlock(&phone->lock); |
return EINVAL; |
} |
/* |
* We can be pretty sure now that both tasks exist and we are |
* connected to them. As we continue to hold the phone locks, |
* we are effectively preventing them from finishing their |
* potential cleanup. |
*/ |
newphid = phone_alloc(phone->callee->task); |
if (newphid < 0) { |
mutex_unlock(&cloned_phone->lock); |
mutex_unlock(&phone->lock); |
return ELIMIT; |
} |
ipc_phone_connect(&phone->callee->task->phones[newphid], |
cloned_phone->callee); |
mutex_unlock(&cloned_phone->lock); |
mutex_unlock(&phone->lock); |
/* Set the new phone for the callee. */ |
IPC_SET_ARG1(call->data, newphid); |
break; |
} |
case IPC_M_CONNECT_ME: |
IPC_SET_ARG5(call->data, (unative_t) phone); |
break; |
case IPC_M_CONNECT_ME_TO: |
newphid = phone_alloc(); |
newphid = phone_alloc(TASK); |
if (newphid < 0) |
return ELIMIT; |
/* Set arg5 for server */ |
399,7 → 482,7 |
int phoneid; |
if (IPC_GET_METHOD(call->data) == IPC_M_CONNECT_TO_ME) { |
phoneid = phone_alloc(); |
phoneid = phone_alloc(TASK); |
if (phoneid < 0) { /* Failed to allocate phone */ |
IPC_SET_RETVAL(call->data, ELIMIT); |
ipc_answer(box, call); |
/trunk/uspace/lib/libc/generic/async.c |
---|
592,6 → 592,7 |
} |
switch (IPC_GET_METHOD(*call)) { |
case IPC_M_CONNECT_ME: |
case IPC_M_CONNECT_ME_TO: |
/* Open new connection with fibril etc. */ |
async_new_connection(IPC_GET_ARG5(*call), callid, call, |