2008-11-19 13:26:10 +01:00
|
|
|
|
|
|
|
|
#define _SYSTEM 1
|
|
|
|
|
|
|
|
|
|
#include <minix/callnr.h>
|
|
|
|
|
#include <minix/com.h>
|
|
|
|
|
#include <minix/config.h>
|
|
|
|
|
#include <minix/const.h>
|
|
|
|
|
#include <minix/ds.h>
|
|
|
|
|
#include <minix/endpoint.h>
|
|
|
|
|
#include <minix/keymap.h>
|
|
|
|
|
#include <minix/minlib.h>
|
|
|
|
|
#include <minix/type.h>
|
|
|
|
|
#include <minix/ipc.h>
|
|
|
|
|
#include <minix/sysutil.h>
|
|
|
|
|
#include <minix/syslib.h>
|
2008-12-08 17:43:20 +01:00
|
|
|
#include <minix/const.h>
|
2009-09-21 16:49:49 +02:00
|
|
|
#include <minix/bitmap.h>
|
|
|
|
|
#include <minix/crtso.h>
|
Initialization protocol for system services.
SYSLIB CHANGES:
- SEF framework now supports a new SEF Init request type from RS. 3 different
callbacks are available (init_fresh, init_lu, init_restart) to specify
initialization code when a service starts fresh, starts after a live update,
or restarts.
SYSTEM SERVICE CHANGES:
- Initialization code for system services is now enclosed in a callback SEF will
automatically call at init time. The return code of the callback will
tell RS whether the initialization completed successfully.
- Each init callback can access information passed by RS to initialize. As of
now, each system service has access to the public entries of RS's system process
table to gather all the information required to initialize. This design
eliminates many existing or potential races at boot time and provides a uniform
initialization interface to system services. The same interface will be reused
for the upcoming publish/subscribe model to handle dynamic
registration / deregistration of system services.
VM CHANGES:
- Uniform privilege management for all system services. Every service uses the
same call mask format. For boot services, VM copies the call mask from init
data. For dynamic services, VM still receives the call mask via rs_set_priv
call that will be soon replaced by the upcoming publish/subscribe model.
RS CHANGES:
- The system process table has been reorganized and split into private entries
and public entries. Only the latter ones are exposed to system services.
- VM call masks are now entirely configured in rs/table.c
- RS has now its own slot in the system process table. Only kernel tasks and
user processes not included in the boot image are now left out from the system
process table.
- RS implements the initialization protocol for system services.
- For services in the boot image, RS blocks till initialization is complete and
panics when failure is reported back. Services are initialized in their order of
appearance in the boot image priv table and RS blocks to implements synchronous
initialization for every system service having the flag SF_SYNCH_BOOT set.
- For services started dynamically, the initialization protocol is implemented
as though it were the first ping for the service. In this case, if the
system service fails to report back (or reports failure), RS brings the service
down rather than trying to restart it.
2010-01-08 02:20:42 +01:00
|
|
|
#include <minix/rs.h>
|
2008-11-19 13:26:10 +01:00
|
|
|
|
|
|
|
|
#include <errno.h>
|
|
|
|
|
#include <string.h>
|
|
|
|
|
#include <env.h>
|
|
|
|
|
#include <stdio.h>
|
|
|
|
|
|
2008-12-08 17:43:20 +01:00
|
|
|
#include <memory.h>
|
|
|
|
|
|
2008-11-19 13:26:10 +01:00
|
|
|
#define _MAIN 1
|
|
|
|
|
#include "glo.h"
|
|
|
|
|
#include "proto.h"
|
|
|
|
|
#include "util.h"
|
|
|
|
|
#include "vm.h"
|
|
|
|
|
#include "sanitycheck.h"
|
|
|
|
|
|
2009-05-12 13:38:29 +02:00
|
|
|
extern int missing_spares;
|
|
|
|
|
|
2008-11-19 13:26:10 +01:00
|
|
|
#include <archtypes.h>
|
|
|
|
|
#include "../../kernel/const.h"
|
|
|
|
|
#include "../../kernel/config.h"
|
|
|
|
|
#include "../../kernel/proc.h"
|
|
|
|
|
|
|
|
|
|
/* Table of calls and a macro to test for being in range. */
|
|
|
|
|
struct {
|
|
|
|
|
int (*vmc_func)(message *); /* Call handles message. */
|
|
|
|
|
char *vmc_name; /* Human-readable string. */
|
Initialization protocol for system services.
SYSLIB CHANGES:
- SEF framework now supports a new SEF Init request type from RS. 3 different
callbacks are available (init_fresh, init_lu, init_restart) to specify
initialization code when a service starts fresh, starts after a live update,
or restarts.
SYSTEM SERVICE CHANGES:
- Initialization code for system services is now enclosed in a callback SEF will
automatically call at init time. The return code of the callback will
tell RS whether the initialization completed successfully.
- Each init callback can access information passed by RS to initialize. As of
now, each system service has access to the public entries of RS's system process
table to gather all the information required to initialize. This design
eliminates many existing or potential races at boot time and provides a uniform
initialization interface to system services. The same interface will be reused
for the upcoming publish/subscribe model to handle dynamic
registration / deregistration of system services.
VM CHANGES:
- Uniform privilege management for all system services. Every service uses the
same call mask format. For boot services, VM copies the call mask from init
data. For dynamic services, VM still receives the call mask via rs_set_priv
call that will be soon replaced by the upcoming publish/subscribe model.
RS CHANGES:
- The system process table has been reorganized and split into private entries
and public entries. Only the latter ones are exposed to system services.
- VM call masks are now entirely configured in rs/table.c
- RS has now its own slot in the system process table. Only kernel tasks and
user processes not included in the boot image are now left out from the system
process table.
- RS implements the initialization protocol for system services.
- For services in the boot image, RS blocks till initialization is complete and
panics when failure is reported back. Services are initialized in their order of
appearance in the boot image priv table and RS blocks to implements synchronous
initialization for every system service having the flag SF_SYNCH_BOOT set.
- For services started dynamically, the initialization protocol is implemented
as though it were the first ping for the service. In this case, if the
system service fails to report back (or reports failure), RS brings the service
down rather than trying to restart it.
2010-01-08 02:20:42 +01:00
|
|
|
} vm_calls[NR_VM_CALLS];
|
2008-11-19 13:26:10 +01:00
|
|
|
|
|
|
|
|
/* Macro to verify call range and map 'high' range to 'base' range
|
|
|
|
|
* (starting at 0) in one. Evaluates to zero-based call number if call
|
|
|
|
|
* number is valid, returns -1 otherwise.
|
|
|
|
|
*/
|
|
|
|
|
#define CALLNUMBER(c) (((c) >= VM_RQ_BASE && \
|
|
|
|
|
(c) < VM_RQ_BASE + ELEMENTS(vm_calls)) ? \
|
|
|
|
|
((c) - VM_RQ_BASE) : -1)
|
|
|
|
|
|
Initialization protocol for system services.
SYSLIB CHANGES:
- SEF framework now supports a new SEF Init request type from RS. 3 different
callbacks are available (init_fresh, init_lu, init_restart) to specify
initialization code when a service starts fresh, starts after a live update,
or restarts.
SYSTEM SERVICE CHANGES:
- Initialization code for system services is now enclosed in a callback SEF will
automatically call at init time. The return code of the callback will
tell RS whether the initialization completed successfully.
- Each init callback can access information passed by RS to initialize. As of
now, each system service has access to the public entries of RS's system process
table to gather all the information required to initialize. This design
eliminates many existing or potential races at boot time and provides a uniform
initialization interface to system services. The same interface will be reused
for the upcoming publish/subscribe model to handle dynamic
registration / deregistration of system services.
VM CHANGES:
- Uniform privilege management for all system services. Every service uses the
same call mask format. For boot services, VM copies the call mask from init
data. For dynamic services, VM still receives the call mask via rs_set_priv
call that will be soon replaced by the upcoming publish/subscribe model.
RS CHANGES:
- The system process table has been reorganized and split into private entries
and public entries. Only the latter ones are exposed to system services.
- VM call masks are now entirely configured in rs/table.c
- RS has now its own slot in the system process table. Only kernel tasks and
user processes not included in the boot image are now left out from the system
process table.
- RS implements the initialization protocol for system services.
- For services in the boot image, RS blocks till initialization is complete and
panics when failure is reported back. Services are initialized in their order of
appearance in the boot image priv table and RS blocks to implements synchronous
initialization for every system service having the flag SF_SYNCH_BOOT set.
- For services started dynamically, the initialization protocol is implemented
as though it were the first ping for the service. In this case, if the
system service fails to report back (or reports failure), RS brings the service
down rather than trying to restart it.
2010-01-08 02:20:42 +01:00
|
|
|
FORWARD _PROTOTYPE(int map_service, (struct rprocpub *rpub));
|
2009-11-03 12:12:23 +01:00
|
|
|
FORWARD _PROTOTYPE(int vm_acl_ok, (endpoint_t caller, int call));
|
2008-11-19 13:26:10 +01:00
|
|
|
|
Initialization protocol for system services.
SYSLIB CHANGES:
- SEF framework now supports a new SEF Init request type from RS. 3 different
callbacks are available (init_fresh, init_lu, init_restart) to specify
initialization code when a service starts fresh, starts after a live update,
or restarts.
SYSTEM SERVICE CHANGES:
- Initialization code for system services is now enclosed in a callback SEF will
automatically call at init time. The return code of the callback will
tell RS whether the initialization completed successfully.
- Each init callback can access information passed by RS to initialize. As of
now, each system service has access to the public entries of RS's system process
table to gather all the information required to initialize. This design
eliminates many existing or potential races at boot time and provides a uniform
initialization interface to system services. The same interface will be reused
for the upcoming publish/subscribe model to handle dynamic
registration / deregistration of system services.
VM CHANGES:
- Uniform privilege management for all system services. Every service uses the
same call mask format. For boot services, VM copies the call mask from init
data. For dynamic services, VM still receives the call mask via rs_set_priv
call that will be soon replaced by the upcoming publish/subscribe model.
RS CHANGES:
- The system process table has been reorganized and split into private entries
and public entries. Only the latter ones are exposed to system services.
- VM call masks are now entirely configured in rs/table.c
- RS has now its own slot in the system process table. Only kernel tasks and
user processes not included in the boot image are now left out from the system
process table.
- RS implements the initialization protocol for system services.
- For services in the boot image, RS blocks till initialization is complete and
panics when failure is reported back. Services are initialized in their order of
appearance in the boot image priv table and RS blocks to implements synchronous
initialization for every system service having the flag SF_SYNCH_BOOT set.
- For services started dynamically, the initialization protocol is implemented
as though it were the first ping for the service. In this case, if the
system service fails to report back (or reports failure), RS brings the service
down rather than trying to restart it.
2010-01-08 02:20:42 +01:00
|
|
|
extern int unmap_ok;
|
|
|
|
|
|
Basic System Event Framework (SEF) with ping and live update.
SYSLIB CHANGES:
- SEF must be used by every system process and is thereby part of the system
library.
- The framework provides a receive() interface (sef_receive) for system
processes to automatically catch known system even messages and process them.
- SEF provides a default behavior for each type of system event, but allows
system processes to register callbacks to override the default behavior.
- Custom (local to the process) or predefined (provided by SEF) callback
implementations can be registered to SEF.
- SEF currently includes support for 2 types of system events:
1. SEF Ping. The event occurs every time RS sends a ping to figure out
whether a system process is still alive. The default callback implementation
provided by SEF is to notify RS back to let it know the process is alive
and kicking.
2. SEF Live update. The event occurs every time RS sends a prepare to update
message to let a system process know an update is available and to prepare
for it. The live update support is very basic for now. SEF only deals with
verifying if the prepare state can be supported by the process, dumping the
state for debugging purposes, and providing an event-driven programming
model to the process to react to state changes check-in when ready to update.
- SEF should be extended in the future to integrate support for more types of
system events. Ideally, all the cross-cutting concerns should be integrated into
SEF to avoid duplicating code and ease extensibility. Examples include:
* PM notify messages primarily used at shutdown.
* SYSTEM notify messages primarily used for signals.
* CLOCK notify messages used for system alarms.
* Debug messages. IS could still be in charge of fkey handling but would
forward the debug message to the target process (e.g. PM, if the user
requested debug information about PM). SEF would then catch the message and
do nothing unless the process has registered an appropriate callback to
deal with the event. This simplifies the programming model to print debug
information, avoids duplicating code, and reduces the effort to print
debug information.
SYSTEM PROCESSES CHANGES:
- Every system process registers SEF callbacks it needs to override the default
system behavior and calls sef_startup() right after being started.
- sef_startup() does almost nothing now, but will be extended in the future to
support callbacks of its own to let RS control and synchronize with every
system process at initialization time.
- Every system process calls sef_receive() now rather than receive() directly,
to let SEF handle predefined system events.
RS CHANGES:
- RS supports a basic single-component live update protocol now, as follows:
* When an update command is issued (via "service update *"), RS notifies the
target system process to prepare for a specific update state.
* If the process doesn't respond back in time, the update is aborted.
* When the process responds back, RS kills it and marks it for refreshing.
* The process is then automatically restarted as for a buggy process and can
start running again.
* Live update is currently prototyped as a controlled failure.
2009-12-21 15:12:21 +01:00
|
|
|
/* SEF functions and variables. */
|
|
|
|
|
FORWARD _PROTOTYPE( void sef_local_startup, (void) );
|
Initialization protocol for system services.
SYSLIB CHANGES:
- SEF framework now supports a new SEF Init request type from RS. 3 different
callbacks are available (init_fresh, init_lu, init_restart) to specify
initialization code when a service starts fresh, starts after a live update,
or restarts.
SYSTEM SERVICE CHANGES:
- Initialization code for system services is now enclosed in a callback SEF will
automatically call at init time. The return code of the callback will
tell RS whether the initialization completed successfully.
- Each init callback can access information passed by RS to initialize. As of
now, each system service has access to the public entries of RS's system process
table to gather all the information required to initialize. This design
eliminates many existing or potential races at boot time and provides a uniform
initialization interface to system services. The same interface will be reused
for the upcoming publish/subscribe model to handle dynamic
registration / deregistration of system services.
VM CHANGES:
- Uniform privilege management for all system services. Every service uses the
same call mask format. For boot services, VM copies the call mask from init
data. For dynamic services, VM still receives the call mask via rs_set_priv
call that will be soon replaced by the upcoming publish/subscribe model.
RS CHANGES:
- The system process table has been reorganized and split into private entries
and public entries. Only the latter ones are exposed to system services.
- VM call masks are now entirely configured in rs/table.c
- RS has now its own slot in the system process table. Only kernel tasks and
user processes not included in the boot image are now left out from the system
process table.
- RS implements the initialization protocol for system services.
- For services in the boot image, RS blocks till initialization is complete and
panics when failure is reported back. Services are initialized in their order of
appearance in the boot image priv table and RS blocks to implements synchronous
initialization for every system service having the flag SF_SYNCH_BOOT set.
- For services started dynamically, the initialization protocol is implemented
as though it were the first ping for the service. In this case, if the
system service fails to report back (or reports failure), RS brings the service
down rather than trying to restart it.
2010-01-08 02:20:42 +01:00
|
|
|
FORWARD _PROTOTYPE( int sef_cb_init_fresh, (int type, sef_init_info_t *info) );
|
2008-11-19 13:26:10 +01:00
|
|
|
|
|
|
|
|
/*===========================================================================*
|
|
|
|
|
* main *
|
|
|
|
|
*===========================================================================*/
|
|
|
|
|
PUBLIC int main(void)
|
|
|
|
|
{
|
|
|
|
|
message msg;
|
|
|
|
|
int result, who_e;
|
|
|
|
|
|
Basic System Event Framework (SEF) with ping and live update.
SYSLIB CHANGES:
- SEF must be used by every system process and is thereby part of the system
library.
- The framework provides a receive() interface (sef_receive) for system
processes to automatically catch known system even messages and process them.
- SEF provides a default behavior for each type of system event, but allows
system processes to register callbacks to override the default behavior.
- Custom (local to the process) or predefined (provided by SEF) callback
implementations can be registered to SEF.
- SEF currently includes support for 2 types of system events:
1. SEF Ping. The event occurs every time RS sends a ping to figure out
whether a system process is still alive. The default callback implementation
provided by SEF is to notify RS back to let it know the process is alive
and kicking.
2. SEF Live update. The event occurs every time RS sends a prepare to update
message to let a system process know an update is available and to prepare
for it. The live update support is very basic for now. SEF only deals with
verifying if the prepare state can be supported by the process, dumping the
state for debugging purposes, and providing an event-driven programming
model to the process to react to state changes check-in when ready to update.
- SEF should be extended in the future to integrate support for more types of
system events. Ideally, all the cross-cutting concerns should be integrated into
SEF to avoid duplicating code and ease extensibility. Examples include:
* PM notify messages primarily used at shutdown.
* SYSTEM notify messages primarily used for signals.
* CLOCK notify messages used for system alarms.
* Debug messages. IS could still be in charge of fkey handling but would
forward the debug message to the target process (e.g. PM, if the user
requested debug information about PM). SEF would then catch the message and
do nothing unless the process has registered an appropriate callback to
deal with the event. This simplifies the programming model to print debug
information, avoids duplicating code, and reduces the effort to print
debug information.
SYSTEM PROCESSES CHANGES:
- Every system process registers SEF callbacks it needs to override the default
system behavior and calls sef_startup() right after being started.
- sef_startup() does almost nothing now, but will be extended in the future to
support callbacks of its own to let RS control and synchronize with every
system process at initialization time.
- Every system process calls sef_receive() now rather than receive() directly,
to let SEF handle predefined system events.
RS CHANGES:
- RS supports a basic single-component live update protocol now, as follows:
* When an update command is issued (via "service update *"), RS notifies the
target system process to prepare for a specific update state.
* If the process doesn't respond back in time, the update is aborted.
* When the process responds back, RS kills it and marks it for refreshing.
* The process is then automatically restarted as for a buggy process and can
start running again.
* Live update is currently prototyped as a controlled failure.
2009-12-21 15:12:21 +01:00
|
|
|
/* SEF local startup. */
|
|
|
|
|
sef_local_startup();
|
|
|
|
|
|
2008-11-19 13:26:10 +01:00
|
|
|
/* This is VM's main loop. */
|
|
|
|
|
while (TRUE) {
|
|
|
|
|
int r, c;
|
|
|
|
|
|
|
|
|
|
SANITYCHECK(SCL_TOP);
|
2009-05-12 13:38:29 +02:00
|
|
|
if(missing_spares > 0) {
|
|
|
|
|
pt_cycle(); /* pagetable code wants to be called */
|
|
|
|
|
}
|
2008-11-19 13:26:10 +01:00
|
|
|
SANITYCHECK(SCL_DETAIL);
|
|
|
|
|
|
Basic System Event Framework (SEF) with ping and live update.
SYSLIB CHANGES:
- SEF must be used by every system process and is thereby part of the system
library.
- The framework provides a receive() interface (sef_receive) for system
processes to automatically catch known system even messages and process them.
- SEF provides a default behavior for each type of system event, but allows
system processes to register callbacks to override the default behavior.
- Custom (local to the process) or predefined (provided by SEF) callback
implementations can be registered to SEF.
- SEF currently includes support for 2 types of system events:
1. SEF Ping. The event occurs every time RS sends a ping to figure out
whether a system process is still alive. The default callback implementation
provided by SEF is to notify RS back to let it know the process is alive
and kicking.
2. SEF Live update. The event occurs every time RS sends a prepare to update
message to let a system process know an update is available and to prepare
for it. The live update support is very basic for now. SEF only deals with
verifying if the prepare state can be supported by the process, dumping the
state for debugging purposes, and providing an event-driven programming
model to the process to react to state changes check-in when ready to update.
- SEF should be extended in the future to integrate support for more types of
system events. Ideally, all the cross-cutting concerns should be integrated into
SEF to avoid duplicating code and ease extensibility. Examples include:
* PM notify messages primarily used at shutdown.
* SYSTEM notify messages primarily used for signals.
* CLOCK notify messages used for system alarms.
* Debug messages. IS could still be in charge of fkey handling but would
forward the debug message to the target process (e.g. PM, if the user
requested debug information about PM). SEF would then catch the message and
do nothing unless the process has registered an appropriate callback to
deal with the event. This simplifies the programming model to print debug
information, avoids duplicating code, and reduces the effort to print
debug information.
SYSTEM PROCESSES CHANGES:
- Every system process registers SEF callbacks it needs to override the default
system behavior and calls sef_startup() right after being started.
- sef_startup() does almost nothing now, but will be extended in the future to
support callbacks of its own to let RS control and synchronize with every
system process at initialization time.
- Every system process calls sef_receive() now rather than receive() directly,
to let SEF handle predefined system events.
RS CHANGES:
- RS supports a basic single-component live update protocol now, as follows:
* When an update command is issued (via "service update *"), RS notifies the
target system process to prepare for a specific update state.
* If the process doesn't respond back in time, the update is aborted.
* When the process responds back, RS kills it and marks it for refreshing.
* The process is then automatically restarted as for a buggy process and can
start running again.
* Live update is currently prototyped as a controlled failure.
2009-12-21 15:12:21 +01:00
|
|
|
if ((r=sef_receive(ANY, &msg)) != OK)
|
|
|
|
|
vm_panic("sef_receive() error", r);
|
2008-11-19 13:26:10 +01:00
|
|
|
|
|
|
|
|
SANITYCHECK(SCL_DETAIL);
|
|
|
|
|
|
|
|
|
|
if(msg.m_type & NOTIFY_MESSAGE) {
|
|
|
|
|
switch(msg.m_source) {
|
|
|
|
|
case SYSTEM:
|
|
|
|
|
/* Kernel wants to have memory ranges
|
2009-09-21 16:49:49 +02:00
|
|
|
* verified, and/or pagefaults handled.
|
2008-11-19 13:26:10 +01:00
|
|
|
*/
|
2009-04-22 14:39:29 +02:00
|
|
|
do_memory();
|
2008-11-19 13:26:10 +01:00
|
|
|
break;
|
2009-09-21 16:49:49 +02:00
|
|
|
case HARDWARE:
|
|
|
|
|
do_pagefaults();
|
|
|
|
|
break;
|
2008-11-19 13:26:10 +01:00
|
|
|
case PM_PROC_NR:
|
|
|
|
|
/* PM sends a notify() on shutdown, which
|
|
|
|
|
* is OK and we ignore.
|
|
|
|
|
*/
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
/* No-one else should send us notifies. */
|
|
|
|
|
printf("VM: ignoring notify() from %d\n",
|
|
|
|
|
msg.m_source);
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
continue;
|
|
|
|
|
}
|
|
|
|
|
who_e = msg.m_source;
|
2009-11-03 12:12:23 +01:00
|
|
|
c = CALLNUMBER(msg.m_type);
|
2008-11-19 13:26:10 +01:00
|
|
|
result = ENOSYS; /* Out of range or restricted calls return this. */
|
2009-11-03 12:12:23 +01:00
|
|
|
if(c < 0 || !vm_calls[c].vmc_func) {
|
2008-11-19 13:26:10 +01:00
|
|
|
printf("VM: out of range or missing callnr %d from %d\n",
|
2009-11-03 12:12:23 +01:00
|
|
|
msg.m_type, who_e);
|
|
|
|
|
} else if (vm_acl_ok(who_e, c) != OK) {
|
|
|
|
|
printf("VM: unauthorized %s by %d\n",
|
|
|
|
|
vm_calls[c].vmc_name, who_e);
|
2008-11-19 13:26:10 +01:00
|
|
|
} else {
|
|
|
|
|
SANITYCHECK(SCL_FUNCTIONS);
|
|
|
|
|
result = vm_calls[c].vmc_func(&msg);
|
|
|
|
|
SANITYCHECK(SCL_FUNCTIONS);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Send reply message, unless the return code is SUSPEND,
|
|
|
|
|
* which is a pseudo-result suppressing the reply message.
|
|
|
|
|
*/
|
|
|
|
|
if(result != SUSPEND) {
|
|
|
|
|
SANITYCHECK(SCL_DETAIL);
|
|
|
|
|
msg.m_type = result;
|
|
|
|
|
if((r=send(who_e, &msg)) != OK) {
|
|
|
|
|
printf("VM: couldn't send %d to %d (err %d)\n",
|
|
|
|
|
msg.m_type, who_e, r);
|
|
|
|
|
vm_panic("send() error", NO_NUM);
|
|
|
|
|
}
|
|
|
|
|
SANITYCHECK(SCL_DETAIL);
|
|
|
|
|
}
|
|
|
|
|
SANITYCHECK(SCL_DETAIL);
|
|
|
|
|
}
|
|
|
|
|
return(OK);
|
|
|
|
|
}
|
|
|
|
|
|
Basic System Event Framework (SEF) with ping and live update.
SYSLIB CHANGES:
- SEF must be used by every system process and is thereby part of the system
library.
- The framework provides a receive() interface (sef_receive) for system
processes to automatically catch known system even messages and process them.
- SEF provides a default behavior for each type of system event, but allows
system processes to register callbacks to override the default behavior.
- Custom (local to the process) or predefined (provided by SEF) callback
implementations can be registered to SEF.
- SEF currently includes support for 2 types of system events:
1. SEF Ping. The event occurs every time RS sends a ping to figure out
whether a system process is still alive. The default callback implementation
provided by SEF is to notify RS back to let it know the process is alive
and kicking.
2. SEF Live update. The event occurs every time RS sends a prepare to update
message to let a system process know an update is available and to prepare
for it. The live update support is very basic for now. SEF only deals with
verifying if the prepare state can be supported by the process, dumping the
state for debugging purposes, and providing an event-driven programming
model to the process to react to state changes check-in when ready to update.
- SEF should be extended in the future to integrate support for more types of
system events. Ideally, all the cross-cutting concerns should be integrated into
SEF to avoid duplicating code and ease extensibility. Examples include:
* PM notify messages primarily used at shutdown.
* SYSTEM notify messages primarily used for signals.
* CLOCK notify messages used for system alarms.
* Debug messages. IS could still be in charge of fkey handling but would
forward the debug message to the target process (e.g. PM, if the user
requested debug information about PM). SEF would then catch the message and
do nothing unless the process has registered an appropriate callback to
deal with the event. This simplifies the programming model to print debug
information, avoids duplicating code, and reduces the effort to print
debug information.
SYSTEM PROCESSES CHANGES:
- Every system process registers SEF callbacks it needs to override the default
system behavior and calls sef_startup() right after being started.
- sef_startup() does almost nothing now, but will be extended in the future to
support callbacks of its own to let RS control and synchronize with every
system process at initialization time.
- Every system process calls sef_receive() now rather than receive() directly,
to let SEF handle predefined system events.
RS CHANGES:
- RS supports a basic single-component live update protocol now, as follows:
* When an update command is issued (via "service update *"), RS notifies the
target system process to prepare for a specific update state.
* If the process doesn't respond back in time, the update is aborted.
* When the process responds back, RS kills it and marks it for refreshing.
* The process is then automatically restarted as for a buggy process and can
start running again.
* Live update is currently prototyped as a controlled failure.
2009-12-21 15:12:21 +01:00
|
|
|
/*===========================================================================*
|
|
|
|
|
* sef_local_startup *
|
|
|
|
|
*===========================================================================*/
|
|
|
|
|
PRIVATE void sef_local_startup()
|
|
|
|
|
{
|
Initialization protocol for system services.
SYSLIB CHANGES:
- SEF framework now supports a new SEF Init request type from RS. 3 different
callbacks are available (init_fresh, init_lu, init_restart) to specify
initialization code when a service starts fresh, starts after a live update,
or restarts.
SYSTEM SERVICE CHANGES:
- Initialization code for system services is now enclosed in a callback SEF will
automatically call at init time. The return code of the callback will
tell RS whether the initialization completed successfully.
- Each init callback can access information passed by RS to initialize. As of
now, each system service has access to the public entries of RS's system process
table to gather all the information required to initialize. This design
eliminates many existing or potential races at boot time and provides a uniform
initialization interface to system services. The same interface will be reused
for the upcoming publish/subscribe model to handle dynamic
registration / deregistration of system services.
VM CHANGES:
- Uniform privilege management for all system services. Every service uses the
same call mask format. For boot services, VM copies the call mask from init
data. For dynamic services, VM still receives the call mask via rs_set_priv
call that will be soon replaced by the upcoming publish/subscribe model.
RS CHANGES:
- The system process table has been reorganized and split into private entries
and public entries. Only the latter ones are exposed to system services.
- VM call masks are now entirely configured in rs/table.c
- RS has now its own slot in the system process table. Only kernel tasks and
user processes not included in the boot image are now left out from the system
process table.
- RS implements the initialization protocol for system services.
- For services in the boot image, RS blocks till initialization is complete and
panics when failure is reported back. Services are initialized in their order of
appearance in the boot image priv table and RS blocks to implements synchronous
initialization for every system service having the flag SF_SYNCH_BOOT set.
- For services started dynamically, the initialization protocol is implemented
as though it were the first ping for the service. In this case, if the
system service fails to report back (or reports failure), RS brings the service
down rather than trying to restart it.
2010-01-08 02:20:42 +01:00
|
|
|
/* Register init callbacks. */
|
|
|
|
|
sef_setcb_init_fresh(sef_cb_init_fresh);
|
|
|
|
|
sef_setcb_init_restart(sef_cb_init_restart_fail);
|
|
|
|
|
|
Basic System Event Framework (SEF) with ping and live update.
SYSLIB CHANGES:
- SEF must be used by every system process and is thereby part of the system
library.
- The framework provides a receive() interface (sef_receive) for system
processes to automatically catch known system even messages and process them.
- SEF provides a default behavior for each type of system event, but allows
system processes to register callbacks to override the default behavior.
- Custom (local to the process) or predefined (provided by SEF) callback
implementations can be registered to SEF.
- SEF currently includes support for 2 types of system events:
1. SEF Ping. The event occurs every time RS sends a ping to figure out
whether a system process is still alive. The default callback implementation
provided by SEF is to notify RS back to let it know the process is alive
and kicking.
2. SEF Live update. The event occurs every time RS sends a prepare to update
message to let a system process know an update is available and to prepare
for it. The live update support is very basic for now. SEF only deals with
verifying if the prepare state can be supported by the process, dumping the
state for debugging purposes, and providing an event-driven programming
model to the process to react to state changes check-in when ready to update.
- SEF should be extended in the future to integrate support for more types of
system events. Ideally, all the cross-cutting concerns should be integrated into
SEF to avoid duplicating code and ease extensibility. Examples include:
* PM notify messages primarily used at shutdown.
* SYSTEM notify messages primarily used for signals.
* CLOCK notify messages used for system alarms.
* Debug messages. IS could still be in charge of fkey handling but would
forward the debug message to the target process (e.g. PM, if the user
requested debug information about PM). SEF would then catch the message and
do nothing unless the process has registered an appropriate callback to
deal with the event. This simplifies the programming model to print debug
information, avoids duplicating code, and reduces the effort to print
debug information.
SYSTEM PROCESSES CHANGES:
- Every system process registers SEF callbacks it needs to override the default
system behavior and calls sef_startup() right after being started.
- sef_startup() does almost nothing now, but will be extended in the future to
support callbacks of its own to let RS control and synchronize with every
system process at initialization time.
- Every system process calls sef_receive() now rather than receive() directly,
to let SEF handle predefined system events.
RS CHANGES:
- RS supports a basic single-component live update protocol now, as follows:
* When an update command is issued (via "service update *"), RS notifies the
target system process to prepare for a specific update state.
* If the process doesn't respond back in time, the update is aborted.
* When the process responds back, RS kills it and marks it for refreshing.
* The process is then automatically restarted as for a buggy process and can
start running again.
* Live update is currently prototyped as a controlled failure.
2009-12-21 15:12:21 +01:00
|
|
|
/* No live update support for now. */
|
|
|
|
|
|
|
|
|
|
/* Let SEF perform startup. */
|
|
|
|
|
sef_startup();
|
|
|
|
|
}
|
|
|
|
|
|
2008-11-19 13:26:10 +01:00
|
|
|
/*===========================================================================*
|
Initialization protocol for system services.
SYSLIB CHANGES:
- SEF framework now supports a new SEF Init request type from RS. 3 different
callbacks are available (init_fresh, init_lu, init_restart) to specify
initialization code when a service starts fresh, starts after a live update,
or restarts.
SYSTEM SERVICE CHANGES:
- Initialization code for system services is now enclosed in a callback SEF will
automatically call at init time. The return code of the callback will
tell RS whether the initialization completed successfully.
- Each init callback can access information passed by RS to initialize. As of
now, each system service has access to the public entries of RS's system process
table to gather all the information required to initialize. This design
eliminates many existing or potential races at boot time and provides a uniform
initialization interface to system services. The same interface will be reused
for the upcoming publish/subscribe model to handle dynamic
registration / deregistration of system services.
VM CHANGES:
- Uniform privilege management for all system services. Every service uses the
same call mask format. For boot services, VM copies the call mask from init
data. For dynamic services, VM still receives the call mask via rs_set_priv
call that will be soon replaced by the upcoming publish/subscribe model.
RS CHANGES:
- The system process table has been reorganized and split into private entries
and public entries. Only the latter ones are exposed to system services.
- VM call masks are now entirely configured in rs/table.c
- RS has now its own slot in the system process table. Only kernel tasks and
user processes not included in the boot image are now left out from the system
process table.
- RS implements the initialization protocol for system services.
- For services in the boot image, RS blocks till initialization is complete and
panics when failure is reported back. Services are initialized in their order of
appearance in the boot image priv table and RS blocks to implements synchronous
initialization for every system service having the flag SF_SYNCH_BOOT set.
- For services started dynamically, the initialization protocol is implemented
as though it were the first ping for the service. In this case, if the
system service fails to report back (or reports failure), RS brings the service
down rather than trying to restart it.
2010-01-08 02:20:42 +01:00
|
|
|
* sef_cb_init_fresh *
|
2008-11-19 13:26:10 +01:00
|
|
|
*===========================================================================*/
|
Initialization protocol for system services.
SYSLIB CHANGES:
- SEF framework now supports a new SEF Init request type from RS. 3 different
callbacks are available (init_fresh, init_lu, init_restart) to specify
initialization code when a service starts fresh, starts after a live update,
or restarts.
SYSTEM SERVICE CHANGES:
- Initialization code for system services is now enclosed in a callback SEF will
automatically call at init time. The return code of the callback will
tell RS whether the initialization completed successfully.
- Each init callback can access information passed by RS to initialize. As of
now, each system service has access to the public entries of RS's system process
table to gather all the information required to initialize. This design
eliminates many existing or potential races at boot time and provides a uniform
initialization interface to system services. The same interface will be reused
for the upcoming publish/subscribe model to handle dynamic
registration / deregistration of system services.
VM CHANGES:
- Uniform privilege management for all system services. Every service uses the
same call mask format. For boot services, VM copies the call mask from init
data. For dynamic services, VM still receives the call mask via rs_set_priv
call that will be soon replaced by the upcoming publish/subscribe model.
RS CHANGES:
- The system process table has been reorganized and split into private entries
and public entries. Only the latter ones are exposed to system services.
- VM call masks are now entirely configured in rs/table.c
- RS has now its own slot in the system process table. Only kernel tasks and
user processes not included in the boot image are now left out from the system
process table.
- RS implements the initialization protocol for system services.
- For services in the boot image, RS blocks till initialization is complete and
panics when failure is reported back. Services are initialized in their order of
appearance in the boot image priv table and RS blocks to implements synchronous
initialization for every system service having the flag SF_SYNCH_BOOT set.
- For services started dynamically, the initialization protocol is implemented
as though it were the first ping for the service. In this case, if the
system service fails to report back (or reports failure), RS brings the service
down rather than trying to restart it.
2010-01-08 02:20:42 +01:00
|
|
|
PRIVATE int sef_cb_init_fresh(int type, sef_init_info_t *info)
|
2008-11-19 13:26:10 +01:00
|
|
|
{
|
Initialization protocol for system services.
SYSLIB CHANGES:
- SEF framework now supports a new SEF Init request type from RS. 3 different
callbacks are available (init_fresh, init_lu, init_restart) to specify
initialization code when a service starts fresh, starts after a live update,
or restarts.
SYSTEM SERVICE CHANGES:
- Initialization code for system services is now enclosed in a callback SEF will
automatically call at init time. The return code of the callback will
tell RS whether the initialization completed successfully.
- Each init callback can access information passed by RS to initialize. As of
now, each system service has access to the public entries of RS's system process
table to gather all the information required to initialize. This design
eliminates many existing or potential races at boot time and provides a uniform
initialization interface to system services. The same interface will be reused
for the upcoming publish/subscribe model to handle dynamic
registration / deregistration of system services.
VM CHANGES:
- Uniform privilege management for all system services. Every service uses the
same call mask format. For boot services, VM copies the call mask from init
data. For dynamic services, VM still receives the call mask via rs_set_priv
call that will be soon replaced by the upcoming publish/subscribe model.
RS CHANGES:
- The system process table has been reorganized and split into private entries
and public entries. Only the latter ones are exposed to system services.
- VM call masks are now entirely configured in rs/table.c
- RS has now its own slot in the system process table. Only kernel tasks and
user processes not included in the boot image are now left out from the system
process table.
- RS implements the initialization protocol for system services.
- For services in the boot image, RS blocks till initialization is complete and
panics when failure is reported back. Services are initialized in their order of
appearance in the boot image priv table and RS blocks to implements synchronous
initialization for every system service having the flag SF_SYNCH_BOOT set.
- For services started dynamically, the initialization protocol is implemented
as though it were the first ping for the service. In this case, if the
system service fails to report back (or reports failure), RS brings the service
down rather than trying to restart it.
2010-01-08 02:20:42 +01:00
|
|
|
/* Initialize the vm server. */
|
2009-05-15 19:07:36 +02:00
|
|
|
int s, i;
|
2009-09-21 16:49:49 +02:00
|
|
|
int click, clicksforgotten = 0;
|
2008-11-19 13:26:10 +01:00
|
|
|
struct memory mem_chunks[NR_MEMS];
|
|
|
|
|
struct boot_image image[NR_BOOT_PROCS];
|
|
|
|
|
struct boot_image *ip;
|
Initialization protocol for system services.
SYSLIB CHANGES:
- SEF framework now supports a new SEF Init request type from RS. 3 different
callbacks are available (init_fresh, init_lu, init_restart) to specify
initialization code when a service starts fresh, starts after a live update,
or restarts.
SYSTEM SERVICE CHANGES:
- Initialization code for system services is now enclosed in a callback SEF will
automatically call at init time. The return code of the callback will
tell RS whether the initialization completed successfully.
- Each init callback can access information passed by RS to initialize. As of
now, each system service has access to the public entries of RS's system process
table to gather all the information required to initialize. This design
eliminates many existing or potential races at boot time and provides a uniform
initialization interface to system services. The same interface will be reused
for the upcoming publish/subscribe model to handle dynamic
registration / deregistration of system services.
VM CHANGES:
- Uniform privilege management for all system services. Every service uses the
same call mask format. For boot services, VM copies the call mask from init
data. For dynamic services, VM still receives the call mask via rs_set_priv
call that will be soon replaced by the upcoming publish/subscribe model.
RS CHANGES:
- The system process table has been reorganized and split into private entries
and public entries. Only the latter ones are exposed to system services.
- VM call masks are now entirely configured in rs/table.c
- RS has now its own slot in the system process table. Only kernel tasks and
user processes not included in the boot image are now left out from the system
process table.
- RS implements the initialization protocol for system services.
- For services in the boot image, RS blocks till initialization is complete and
panics when failure is reported back. Services are initialized in their order of
appearance in the boot image priv table and RS blocks to implements synchronous
initialization for every system service having the flag SF_SYNCH_BOOT set.
- For services started dynamically, the initialization protocol is implemented
as though it were the first ping for the service. In this case, if the
system service fails to report back (or reports failure), RS brings the service
down rather than trying to restart it.
2010-01-08 02:20:42 +01:00
|
|
|
struct rprocpub rprocpub[NR_BOOT_PROCS];
|
2009-12-07 13:10:44 +01:00
|
|
|
phys_bytes limit = 0;
|
2008-11-19 13:26:10 +01:00
|
|
|
|
Initialization protocol for system services.
SYSLIB CHANGES:
- SEF framework now supports a new SEF Init request type from RS. 3 different
callbacks are available (init_fresh, init_lu, init_restart) to specify
initialization code when a service starts fresh, starts after a live update,
or restarts.
SYSTEM SERVICE CHANGES:
- Initialization code for system services is now enclosed in a callback SEF will
automatically call at init time. The return code of the callback will
tell RS whether the initialization completed successfully.
- Each init callback can access information passed by RS to initialize. As of
now, each system service has access to the public entries of RS's system process
table to gather all the information required to initialize. This design
eliminates many existing or potential races at boot time and provides a uniform
initialization interface to system services. The same interface will be reused
for the upcoming publish/subscribe model to handle dynamic
registration / deregistration of system services.
VM CHANGES:
- Uniform privilege management for all system services. Every service uses the
same call mask format. For boot services, VM copies the call mask from init
data. For dynamic services, VM still receives the call mask via rs_set_priv
call that will be soon replaced by the upcoming publish/subscribe model.
RS CHANGES:
- The system process table has been reorganized and split into private entries
and public entries. Only the latter ones are exposed to system services.
- VM call masks are now entirely configured in rs/table.c
- RS has now its own slot in the system process table. Only kernel tasks and
user processes not included in the boot image are now left out from the system
process table.
- RS implements the initialization protocol for system services.
- For services in the boot image, RS blocks till initialization is complete and
panics when failure is reported back. Services are initialized in their order of
appearance in the boot image priv table and RS blocks to implements synchronous
initialization for every system service having the flag SF_SYNCH_BOOT set.
- For services started dynamically, the initialization protocol is implemented
as though it were the first ping for the service. In this case, if the
system service fails to report back (or reports failure), RS brings the service
down rather than trying to restart it.
2010-01-08 02:20:42 +01:00
|
|
|
#if SANITYCHECKS
|
|
|
|
|
incheck = nocheck = 0;
|
|
|
|
|
FIXME("VM SANITYCHECKS are on");
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
vm_paged = 1;
|
|
|
|
|
env_parse("vm_paged", "d", 0, &vm_paged, 0, 1);
|
|
|
|
|
#if SANITYCHECKS
|
|
|
|
|
env_parse("vm_sanitychecklevel", "d", 0, &vm_sanitychecklevel, 0, SCL_MAX);
|
|
|
|
|
#endif
|
|
|
|
|
|
2008-11-19 13:26:10 +01:00
|
|
|
/* Get chunks of available memory. */
|
|
|
|
|
get_mem_chunks(mem_chunks);
|
|
|
|
|
|
|
|
|
|
/* Initialize VM's process table. Request a copy of the system
|
|
|
|
|
* image table that is defined at the kernel level to see which
|
|
|
|
|
* slots to fill in.
|
|
|
|
|
*/
|
|
|
|
|
if (OK != (s=sys_getimage(image)))
|
|
|
|
|
vm_panic("couldn't get image table: %d\n", s);
|
|
|
|
|
|
|
|
|
|
/* Set table to 0. This invalidates all slots (clear VMF_INUSE). */
|
|
|
|
|
memset(vmproc, 0, sizeof(vmproc));
|
|
|
|
|
|
2009-05-15 19:07:36 +02:00
|
|
|
for(i = 0; i < ELEMENTS(vmproc); i++) {
|
|
|
|
|
vmproc[i].vm_slot = i;
|
|
|
|
|
}
|
|
|
|
|
|
2008-11-19 13:26:10 +01:00
|
|
|
/* Walk through boot-time system processes that are alive
|
|
|
|
|
* now and make valid slot entries for them.
|
|
|
|
|
*/
|
|
|
|
|
for (ip = &image[0]; ip < &image[NR_BOOT_PROCS]; ip++) {
|
2009-12-07 13:10:44 +01:00
|
|
|
phys_bytes proclimit;
|
2008-12-08 17:43:20 +01:00
|
|
|
struct vmproc *vmp;
|
|
|
|
|
|
2008-11-19 13:26:10 +01:00
|
|
|
if(ip->proc_nr >= _NR_PROCS) { vm_panic("proc", ip->proc_nr); }
|
|
|
|
|
if(ip->proc_nr < 0 && ip->proc_nr != SYSTEM) continue;
|
|
|
|
|
|
2008-12-08 17:43:20 +01:00
|
|
|
#define GETVMP(v, nr) \
|
|
|
|
|
if(nr >= 0) { \
|
|
|
|
|
vmp = &vmproc[ip->proc_nr]; \
|
|
|
|
|
} else if(nr == SYSTEM) { \
|
|
|
|
|
vmp = &vmproc[VMP_SYSTEM]; \
|
|
|
|
|
} else { \
|
|
|
|
|
vm_panic("init: crazy proc_nr", nr); \
|
|
|
|
|
}
|
|
|
|
|
|
2008-11-19 13:26:10 +01:00
|
|
|
/* Initialize normal process table slot or special SYSTEM
|
|
|
|
|
* table slot. Kernel memory is already reserved.
|
|
|
|
|
*/
|
2008-12-08 17:43:20 +01:00
|
|
|
GETVMP(vmp, ip->proc_nr);
|
2008-11-19 13:26:10 +01:00
|
|
|
|
|
|
|
|
/* reset fields as if exited */
|
|
|
|
|
clear_proc(vmp);
|
|
|
|
|
|
|
|
|
|
/* Get memory map for this process from the kernel. */
|
|
|
|
|
if ((s=get_mem_map(ip->proc_nr, vmp->vm_arch.vm_seg)) != OK)
|
|
|
|
|
vm_panic("couldn't get process mem_map",s);
|
|
|
|
|
|
|
|
|
|
/* Remove this memory from the free list. */
|
|
|
|
|
reserve_proc_mem(mem_chunks, vmp->vm_arch.vm_seg);
|
|
|
|
|
|
2009-12-07 13:10:44 +01:00
|
|
|
/* Set memory limit. */
|
|
|
|
|
proclimit = CLICK2ABS(vmp->vm_arch.vm_seg[S].mem_phys +
|
|
|
|
|
vmp->vm_arch.vm_seg[S].mem_len) - 1;
|
|
|
|
|
|
|
|
|
|
if(proclimit > limit)
|
|
|
|
|
limit = proclimit;
|
|
|
|
|
|
2008-11-19 13:26:10 +01:00
|
|
|
vmp->vm_flags = VMF_INUSE;
|
|
|
|
|
vmp->vm_endpoint = ip->endpoint;
|
|
|
|
|
vmp->vm_stacktop =
|
|
|
|
|
CLICK2ABS(vmp->vm_arch.vm_seg[S].mem_vir +
|
|
|
|
|
vmp->vm_arch.vm_seg[S].mem_len);
|
|
|
|
|
|
|
|
|
|
if (vmp->vm_arch.vm_seg[T].mem_len != 0)
|
|
|
|
|
vmp->vm_flags |= VMF_SEPARATE;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Architecture-dependent initialization. */
|
2009-12-07 13:10:44 +01:00
|
|
|
pt_init(limit);
|
2008-11-19 13:26:10 +01:00
|
|
|
|
|
|
|
|
/* Initialize tables to all physical memory. */
|
|
|
|
|
mem_init(mem_chunks);
|
2009-09-21 16:49:49 +02:00
|
|
|
meminit_done = 1;
|
2008-12-18 16:35:22 +01:00
|
|
|
|
2008-12-08 17:43:20 +01:00
|
|
|
/* Give these processes their own page table. */
|
|
|
|
|
for (ip = &image[0]; ip < &image[NR_BOOT_PROCS]; ip++) {
|
|
|
|
|
int s;
|
|
|
|
|
struct vmproc *vmp;
|
|
|
|
|
vir_bytes old_stacktop, old_stack;
|
|
|
|
|
|
|
|
|
|
if(ip->proc_nr < 0) continue;
|
|
|
|
|
|
|
|
|
|
GETVMP(vmp, ip->proc_nr);
|
|
|
|
|
|
2009-12-07 13:10:44 +01:00
|
|
|
if(!(ip->flags & PROC_FULLVM))
|
|
|
|
|
continue;
|
2009-09-21 16:49:49 +02:00
|
|
|
|
2008-12-08 17:43:20 +01:00
|
|
|
old_stack =
|
|
|
|
|
vmp->vm_arch.vm_seg[S].mem_vir +
|
|
|
|
|
vmp->vm_arch.vm_seg[S].mem_len -
|
|
|
|
|
vmp->vm_arch.vm_seg[D].mem_len;
|
|
|
|
|
|
|
|
|
|
if(pt_new(&vmp->vm_pt) != OK)
|
Initialization protocol for system services.
SYSLIB CHANGES:
- SEF framework now supports a new SEF Init request type from RS. 3 different
callbacks are available (init_fresh, init_lu, init_restart) to specify
initialization code when a service starts fresh, starts after a live update,
or restarts.
SYSTEM SERVICE CHANGES:
- Initialization code for system services is now enclosed in a callback SEF will
automatically call at init time. The return code of the callback will
tell RS whether the initialization completed successfully.
- Each init callback can access information passed by RS to initialize. As of
now, each system service has access to the public entries of RS's system process
table to gather all the information required to initialize. This design
eliminates many existing or potential races at boot time and provides a uniform
initialization interface to system services. The same interface will be reused
for the upcoming publish/subscribe model to handle dynamic
registration / deregistration of system services.
VM CHANGES:
- Uniform privilege management for all system services. Every service uses the
same call mask format. For boot services, VM copies the call mask from init
data. For dynamic services, VM still receives the call mask via rs_set_priv
call that will be soon replaced by the upcoming publish/subscribe model.
RS CHANGES:
- The system process table has been reorganized and split into private entries
and public entries. Only the latter ones are exposed to system services.
- VM call masks are now entirely configured in rs/table.c
- RS has now its own slot in the system process table. Only kernel tasks and
user processes not included in the boot image are now left out from the system
process table.
- RS implements the initialization protocol for system services.
- For services in the boot image, RS blocks till initialization is complete and
panics when failure is reported back. Services are initialized in their order of
appearance in the boot image priv table and RS blocks to implements synchronous
initialization for every system service having the flag SF_SYNCH_BOOT set.
- For services started dynamically, the initialization protocol is implemented
as though it were the first ping for the service. In this case, if the
system service fails to report back (or reports failure), RS brings the service
down rather than trying to restart it.
2010-01-08 02:20:42 +01:00
|
|
|
vm_panic("VM: no new pagetable", NO_NUM);
|
2008-12-08 17:43:20 +01:00
|
|
|
#define BASICSTACK VM_PAGE_SIZE
|
|
|
|
|
old_stacktop = CLICK2ABS(vmp->vm_arch.vm_seg[S].mem_vir +
|
|
|
|
|
vmp->vm_arch.vm_seg[S].mem_len);
|
|
|
|
|
if(sys_vmctl(vmp->vm_endpoint, VMCTL_INCSP,
|
|
|
|
|
VM_STACKTOP - old_stacktop) != OK) {
|
|
|
|
|
vm_panic("VM: vmctl for new stack failed", NO_NUM);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
FREE_MEM(vmp->vm_arch.vm_seg[D].mem_phys +
|
|
|
|
|
vmp->vm_arch.vm_seg[D].mem_len,
|
|
|
|
|
old_stack);
|
|
|
|
|
|
2009-09-21 16:49:49 +02:00
|
|
|
if(proc_new(vmp,
|
2009-05-11 21:11:37 +02:00
|
|
|
VM_PROCSTART,
|
2008-12-08 17:43:20 +01:00
|
|
|
CLICK2ABS(vmp->vm_arch.vm_seg[T].mem_len),
|
|
|
|
|
CLICK2ABS(vmp->vm_arch.vm_seg[D].mem_len),
|
|
|
|
|
BASICSTACK,
|
|
|
|
|
CLICK2ABS(vmp->vm_arch.vm_seg[S].mem_vir +
|
|
|
|
|
vmp->vm_arch.vm_seg[S].mem_len -
|
|
|
|
|
vmp->vm_arch.vm_seg[D].mem_len) - BASICSTACK,
|
|
|
|
|
CLICK2ABS(vmp->vm_arch.vm_seg[T].mem_phys),
|
|
|
|
|
CLICK2ABS(vmp->vm_arch.vm_seg[D].mem_phys),
|
2009-09-21 16:49:49 +02:00
|
|
|
VM_STACKTOP) != OK) {
|
|
|
|
|
vm_panic("failed proc_new for boot process", NO_NUM);
|
|
|
|
|
}
|
2008-12-08 17:43:20 +01:00
|
|
|
}
|
|
|
|
|
|
2008-11-19 13:26:10 +01:00
|
|
|
/* Set up table of calls. */
|
Initialization protocol for system services.
SYSLIB CHANGES:
- SEF framework now supports a new SEF Init request type from RS. 3 different
callbacks are available (init_fresh, init_lu, init_restart) to specify
initialization code when a service starts fresh, starts after a live update,
or restarts.
SYSTEM SERVICE CHANGES:
- Initialization code for system services is now enclosed in a callback SEF will
automatically call at init time. The return code of the callback will
tell RS whether the initialization completed successfully.
- Each init callback can access information passed by RS to initialize. As of
now, each system service has access to the public entries of RS's system process
table to gather all the information required to initialize. This design
eliminates many existing or potential races at boot time and provides a uniform
initialization interface to system services. The same interface will be reused
for the upcoming publish/subscribe model to handle dynamic
registration / deregistration of system services.
VM CHANGES:
- Uniform privilege management for all system services. Every service uses the
same call mask format. For boot services, VM copies the call mask from init
data. For dynamic services, VM still receives the call mask via rs_set_priv
call that will be soon replaced by the upcoming publish/subscribe model.
RS CHANGES:
- The system process table has been reorganized and split into private entries
and public entries. Only the latter ones are exposed to system services.
- VM call masks are now entirely configured in rs/table.c
- RS has now its own slot in the system process table. Only kernel tasks and
user processes not included in the boot image are now left out from the system
process table.
- RS implements the initialization protocol for system services.
- For services in the boot image, RS blocks till initialization is complete and
panics when failure is reported back. Services are initialized in their order of
appearance in the boot image priv table and RS blocks to implements synchronous
initialization for every system service having the flag SF_SYNCH_BOOT set.
- For services started dynamically, the initialization protocol is implemented
as though it were the first ping for the service. In this case, if the
system service fails to report back (or reports failure), RS brings the service
down rather than trying to restart it.
2010-01-08 02:20:42 +01:00
|
|
|
#define CALLMAP(code, func) { int i; \
|
2008-11-19 13:26:10 +01:00
|
|
|
if((i=CALLNUMBER(code)) < 0) { vm_panic(#code " invalid", (code)); } \
|
Initialization protocol for system services.
SYSLIB CHANGES:
- SEF framework now supports a new SEF Init request type from RS. 3 different
callbacks are available (init_fresh, init_lu, init_restart) to specify
initialization code when a service starts fresh, starts after a live update,
or restarts.
SYSTEM SERVICE CHANGES:
- Initialization code for system services is now enclosed in a callback SEF will
automatically call at init time. The return code of the callback will
tell RS whether the initialization completed successfully.
- Each init callback can access information passed by RS to initialize. As of
now, each system service has access to the public entries of RS's system process
table to gather all the information required to initialize. This design
eliminates many existing or potential races at boot time and provides a uniform
initialization interface to system services. The same interface will be reused
for the upcoming publish/subscribe model to handle dynamic
registration / deregistration of system services.
VM CHANGES:
- Uniform privilege management for all system services. Every service uses the
same call mask format. For boot services, VM copies the call mask from init
data. For dynamic services, VM still receives the call mask via rs_set_priv
call that will be soon replaced by the upcoming publish/subscribe model.
RS CHANGES:
- The system process table has been reorganized and split into private entries
and public entries. Only the latter ones are exposed to system services.
- VM call masks are now entirely configured in rs/table.c
- RS has now its own slot in the system process table. Only kernel tasks and
user processes not included in the boot image are now left out from the system
process table.
- RS implements the initialization protocol for system services.
- For services in the boot image, RS blocks till initialization is complete and
panics when failure is reported back. Services are initialized in their order of
appearance in the boot image priv table and RS blocks to implements synchronous
initialization for every system service having the flag SF_SYNCH_BOOT set.
- For services started dynamically, the initialization protocol is implemented
as though it were the first ping for the service. In this case, if the
system service fails to report back (or reports failure), RS brings the service
down rather than trying to restart it.
2010-01-08 02:20:42 +01:00
|
|
|
if(i >= NR_VM_CALLS) { vm_panic(#code " invalid", (code)); } \
|
2008-11-19 13:26:10 +01:00
|
|
|
vm_calls[i].vmc_func = (func); \
|
|
|
|
|
vm_calls[i].vmc_name = #code; \
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Set call table to 0. This invalidates all calls (clear
|
|
|
|
|
* vmc_func).
|
|
|
|
|
*/
|
|
|
|
|
memset(vm_calls, 0, sizeof(vm_calls));
|
|
|
|
|
|
Initialization protocol for system services.
SYSLIB CHANGES:
- SEF framework now supports a new SEF Init request type from RS. 3 different
callbacks are available (init_fresh, init_lu, init_restart) to specify
initialization code when a service starts fresh, starts after a live update,
or restarts.
SYSTEM SERVICE CHANGES:
- Initialization code for system services is now enclosed in a callback SEF will
automatically call at init time. The return code of the callback will
tell RS whether the initialization completed successfully.
- Each init callback can access information passed by RS to initialize. As of
now, each system service has access to the public entries of RS's system process
table to gather all the information required to initialize. This design
eliminates many existing or potential races at boot time and provides a uniform
initialization interface to system services. The same interface will be reused
for the upcoming publish/subscribe model to handle dynamic
registration / deregistration of system services.
VM CHANGES:
- Uniform privilege management for all system services. Every service uses the
same call mask format. For boot services, VM copies the call mask from init
data. For dynamic services, VM still receives the call mask via rs_set_priv
call that will be soon replaced by the upcoming publish/subscribe model.
RS CHANGES:
- The system process table has been reorganized and split into private entries
and public entries. Only the latter ones are exposed to system services.
- VM call masks are now entirely configured in rs/table.c
- RS has now its own slot in the system process table. Only kernel tasks and
user processes not included in the boot image are now left out from the system
process table.
- RS implements the initialization protocol for system services.
- For services in the boot image, RS blocks till initialization is complete and
panics when failure is reported back. Services are initialized in their order of
appearance in the boot image priv table and RS blocks to implements synchronous
initialization for every system service having the flag SF_SYNCH_BOOT set.
- For services started dynamically, the initialization protocol is implemented
as though it were the first ping for the service. In this case, if the
system service fails to report back (or reports failure), RS brings the service
down rather than trying to restart it.
2010-01-08 02:20:42 +01:00
|
|
|
/* Basic VM calls. */
|
|
|
|
|
CALLMAP(VM_MMAP, do_mmap);
|
|
|
|
|
CALLMAP(VM_MUNMAP, do_munmap);
|
|
|
|
|
CALLMAP(VM_MUNMAP_TEXT, do_munmap);
|
|
|
|
|
CALLMAP(VM_MAP_PHYS, do_map_phys);
|
|
|
|
|
CALLMAP(VM_UNMAP_PHYS, do_unmap_phys);
|
|
|
|
|
|
|
|
|
|
/* Calls from PM. */
|
|
|
|
|
CALLMAP(VM_EXIT, do_exit);
|
|
|
|
|
CALLMAP(VM_FORK, do_fork);
|
|
|
|
|
CALLMAP(VM_BRK, do_brk);
|
|
|
|
|
CALLMAP(VM_EXEC_NEWMEM, do_exec_newmem);
|
|
|
|
|
CALLMAP(VM_PUSH_SIG, do_push_sig);
|
|
|
|
|
CALLMAP(VM_WILLEXIT, do_willexit);
|
|
|
|
|
CALLMAP(VM_ADDDMA, do_adddma);
|
|
|
|
|
CALLMAP(VM_DELDMA, do_deldma);
|
|
|
|
|
CALLMAP(VM_GETDMA, do_getdma);
|
|
|
|
|
CALLMAP(VM_NOTIFY_SIG, do_notify_sig);
|
|
|
|
|
|
|
|
|
|
/* Calls from RS */
|
|
|
|
|
CALLMAP(VM_RS_SET_PRIV, do_rs_set_priv);
|
|
|
|
|
|
|
|
|
|
/* Generic calls. */
|
|
|
|
|
CALLMAP(VM_REMAP, do_remap);
|
|
|
|
|
CALLMAP(VM_GETPHYS, do_get_phys);
|
|
|
|
|
CALLMAP(VM_SHM_UNMAP, do_shared_unmap);
|
|
|
|
|
CALLMAP(VM_GETREF, do_get_refcount);
|
|
|
|
|
CALLMAP(VM_CTL, do_ctl);
|
|
|
|
|
CALLMAP(VM_QUERY_EXIT, do_query_exit);
|
2009-09-21 16:49:49 +02:00
|
|
|
|
2009-05-11 21:11:37 +02:00
|
|
|
/* Sanity checks */
|
|
|
|
|
if(find_kernel_top() >= VM_PROCSTART)
|
|
|
|
|
vm_panic("kernel loaded too high", NO_NUM);
|
2008-11-19 13:26:10 +01:00
|
|
|
|
2009-09-21 16:49:49 +02:00
|
|
|
/* Initialize the structures for queryexit */
|
|
|
|
|
init_query_exit();
|
|
|
|
|
|
|
|
|
|
/* Unmap our own low pages. */
|
|
|
|
|
unmap_ok = 1;
|
|
|
|
|
_minix_unmapzero();
|
Initialization protocol for system services.
SYSLIB CHANGES:
- SEF framework now supports a new SEF Init request type from RS. 3 different
callbacks are available (init_fresh, init_lu, init_restart) to specify
initialization code when a service starts fresh, starts after a live update,
or restarts.
SYSTEM SERVICE CHANGES:
- Initialization code for system services is now enclosed in a callback SEF will
automatically call at init time. The return code of the callback will
tell RS whether the initialization completed successfully.
- Each init callback can access information passed by RS to initialize. As of
now, each system service has access to the public entries of RS's system process
table to gather all the information required to initialize. This design
eliminates many existing or potential races at boot time and provides a uniform
initialization interface to system services. The same interface will be reused
for the upcoming publish/subscribe model to handle dynamic
registration / deregistration of system services.
VM CHANGES:
- Uniform privilege management for all system services. Every service uses the
same call mask format. For boot services, VM copies the call mask from init
data. For dynamic services, VM still receives the call mask via rs_set_priv
call that will be soon replaced by the upcoming publish/subscribe model.
RS CHANGES:
- The system process table has been reorganized and split into private entries
and public entries. Only the latter ones are exposed to system services.
- VM call masks are now entirely configured in rs/table.c
- RS has now its own slot in the system process table. Only kernel tasks and
user processes not included in the boot image are now left out from the system
process table.
- RS implements the initialization protocol for system services.
- For services in the boot image, RS blocks till initialization is complete and
panics when failure is reported back. Services are initialized in their order of
appearance in the boot image priv table and RS blocks to implements synchronous
initialization for every system service having the flag SF_SYNCH_BOOT set.
- For services started dynamically, the initialization protocol is implemented
as though it were the first ping for the service. In this case, if the
system service fails to report back (or reports failure), RS brings the service
down rather than trying to restart it.
2010-01-08 02:20:42 +01:00
|
|
|
|
|
|
|
|
/* Map all the services in the boot image. */
|
|
|
|
|
if((s = sys_safecopyfrom(RS_PROC_NR, info->rproctab_gid, 0,
|
|
|
|
|
(vir_bytes) rprocpub, sizeof(rprocpub), S)) != OK) {
|
|
|
|
|
panic("VM", "sys_safecopyfrom failed", s);
|
|
|
|
|
}
|
|
|
|
|
for(i=0;i < NR_BOOT_PROCS;i++) {
|
|
|
|
|
if(rprocpub[i].in_use) {
|
|
|
|
|
if((s = map_service(&rprocpub[i])) != OK) {
|
|
|
|
|
vm_panic("unable to map service", s);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return(OK);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*===========================================================================*
|
|
|
|
|
* map_service *
|
|
|
|
|
*===========================================================================*/
|
|
|
|
|
PRIVATE int map_service(rpub)
|
|
|
|
|
struct rprocpub *rpub;
|
|
|
|
|
{
|
|
|
|
|
/* Map a new service by initializing its call mask. */
|
|
|
|
|
int r, proc_nr;
|
|
|
|
|
|
|
|
|
|
if ((r = vm_isokendpt(rpub->endpoint, &proc_nr)) != OK) {
|
|
|
|
|
return r;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Copy the call mask. */
|
|
|
|
|
memcpy(&vmproc[proc_nr].vm_call_mask, &rpub->vm_call_mask,
|
|
|
|
|
sizeof(vmproc[proc_nr].vm_call_mask));
|
|
|
|
|
|
|
|
|
|
return(OK);
|
2008-12-08 17:43:20 +01:00
|
|
|
}
|
2009-09-21 16:49:49 +02:00
|
|
|
|
2009-11-03 12:12:23 +01:00
|
|
|
/*===========================================================================*
|
|
|
|
|
* vm_acl_ok *
|
|
|
|
|
*===========================================================================*/
|
|
|
|
|
PRIVATE int vm_acl_ok(endpoint_t caller, int call)
|
|
|
|
|
{
|
|
|
|
|
int n, r;
|
|
|
|
|
|
|
|
|
|
if ((r = vm_isokendpt(caller, &n)) != OK)
|
|
|
|
|
vm_panic("VM: from strange source.", caller);
|
|
|
|
|
|
Initialization protocol for system services.
SYSLIB CHANGES:
- SEF framework now supports a new SEF Init request type from RS. 3 different
callbacks are available (init_fresh, init_lu, init_restart) to specify
initialization code when a service starts fresh, starts after a live update,
or restarts.
SYSTEM SERVICE CHANGES:
- Initialization code for system services is now enclosed in a callback SEF will
automatically call at init time. The return code of the callback will
tell RS whether the initialization completed successfully.
- Each init callback can access information passed by RS to initialize. As of
now, each system service has access to the public entries of RS's system process
table to gather all the information required to initialize. This design
eliminates many existing or potential races at boot time and provides a uniform
initialization interface to system services. The same interface will be reused
for the upcoming publish/subscribe model to handle dynamic
registration / deregistration of system services.
VM CHANGES:
- Uniform privilege management for all system services. Every service uses the
same call mask format. For boot services, VM copies the call mask from init
data. For dynamic services, VM still receives the call mask via rs_set_priv
call that will be soon replaced by the upcoming publish/subscribe model.
RS CHANGES:
- The system process table has been reorganized and split into private entries
and public entries. Only the latter ones are exposed to system services.
- VM call masks are now entirely configured in rs/table.c
- RS has now its own slot in the system process table. Only kernel tasks and
user processes not included in the boot image are now left out from the system
process table.
- RS implements the initialization protocol for system services.
- For services in the boot image, RS blocks till initialization is complete and
panics when failure is reported back. Services are initialized in their order of
appearance in the boot image priv table and RS blocks to implements synchronous
initialization for every system service having the flag SF_SYNCH_BOOT set.
- For services started dynamically, the initialization protocol is implemented
as though it were the first ping for the service. In this case, if the
system service fails to report back (or reports failure), RS brings the service
down rather than trying to restart it.
2010-01-08 02:20:42 +01:00
|
|
|
/* See if the call is allowed. */
|
|
|
|
|
if (!GET_BIT(vmproc[n].vm_call_mask, call)) {
|
2009-11-03 12:12:23 +01:00
|
|
|
return EPERM;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return OK;
|
|
|
|
|
}
|
Initialization protocol for system services.
SYSLIB CHANGES:
- SEF framework now supports a new SEF Init request type from RS. 3 different
callbacks are available (init_fresh, init_lu, init_restart) to specify
initialization code when a service starts fresh, starts after a live update,
or restarts.
SYSTEM SERVICE CHANGES:
- Initialization code for system services is now enclosed in a callback SEF will
automatically call at init time. The return code of the callback will
tell RS whether the initialization completed successfully.
- Each init callback can access information passed by RS to initialize. As of
now, each system service has access to the public entries of RS's system process
table to gather all the information required to initialize. This design
eliminates many existing or potential races at boot time and provides a uniform
initialization interface to system services. The same interface will be reused
for the upcoming publish/subscribe model to handle dynamic
registration / deregistration of system services.
VM CHANGES:
- Uniform privilege management for all system services. Every service uses the
same call mask format. For boot services, VM copies the call mask from init
data. For dynamic services, VM still receives the call mask via rs_set_priv
call that will be soon replaced by the upcoming publish/subscribe model.
RS CHANGES:
- The system process table has been reorganized and split into private entries
and public entries. Only the latter ones are exposed to system services.
- VM call masks are now entirely configured in rs/table.c
- RS has now its own slot in the system process table. Only kernel tasks and
user processes not included in the boot image are now left out from the system
process table.
- RS implements the initialization protocol for system services.
- For services in the boot image, RS blocks till initialization is complete and
panics when failure is reported back. Services are initialized in their order of
appearance in the boot image priv table and RS blocks to implements synchronous
initialization for every system service having the flag SF_SYNCH_BOOT set.
- For services started dynamically, the initialization protocol is implemented
as though it were the first ping for the service. In this case, if the
system service fails to report back (or reports failure), RS brings the service
down rather than trying to restart it.
2010-01-08 02:20:42 +01:00
|
|
|
|
