Commit Graph

340 Commits

Author SHA1 Message Date
Norman Feske
e4fba26a85 init: Genode::String for unique and binary name
This patch removes the use of C-style string functions from init.
2017-02-28 12:59:26 +01:00
Josef Söntgen
69c48a3626 os: refactor Global_file_system_factory
The global file system factory is now created explicitly and the
global singleton accessor function was removed.

Fixes #2281.
2017-02-28 12:59:23 +01:00
Norman Feske
9cba459958 base: remove Child::heap
This patch improves the accounting for the backing store of
session-state meta data. Originally, the session state used to be
allocated by a child-local heap partition fed from the child's RAM
session. However, whereas this approach was somehow practical from a
runtime's (parent's) point of view, the child component could not count
on the quota in its own RAM session. I.e., if the Child::heap grew at
the parent side, the child's RAM session would magically diminish. This
caused two problems. First, it violates assumptions of components like
init that carefully manage their RAM resources (and giving most of them
away their children). Second, if a child transfers most of its RAM
session quota to another RAM session (like init does), the child's RAM
session may actually not allow the parent's heap to grow, which is a
very difficult error condition to deal with.

In the new version, there is no Child::heap anymore. Instead, session
states are allocated from the runtime's RAM session. In order to let
children pay for these costs, the parent withdraws the local session
costs from the session quota donated from the child when the child
initiates a new session. Hence, in principle, all components on the
route of the session request take a small bite from the session quota to
pay for their local book keeping

Consequently, the session quota that ends up at the server may become
depleted more or less, depending on the route. In the case where the
remaining quota is insufficient for the server, the server responds with
'QUOTA_EXCEEDED'. Since this behavior must generally be expected, this
patch equips the client-side 'Env::session' implementation with the
ability to re-issue session requests with successively growing quota
donations.

For several of core's services (ROM, IO_MEM, IRQ), the default session
quota has now increased by 2 KiB, which should suffice for session
requests to up to 3 hops as is the common case for most run scripts. For
longer routes, the retry mechanism as described above comes into effect.
For the time being, we give a warning whenever the server-side quota
check triggers the retry mechanism. The warning may eventually be
removed at a later stage.
2017-02-28 12:59:23 +01:00
Norman Feske
84fddafda7 init: enable init to report its internal state
This patch equips init with the ability to report its internal state in
the form of a "state" report. This feature can be enabled by placing a
'<report>' node in init's configuration.

The report node accepts the following arguments (with their default
values):

'delay_ms="100"': specifies the number of milliseconds to wait before
  producing a new report. This way, many consecutive state changes -
  like they occur during the startup - do not result in an overly
  large number of reports but are merged into one final report.

'buffer="4K"': the maximum size of the report in bytes. The attribute
  accepts the use of K/M/G as units.

'init_ram="no"': if enabled, the report will contain a '<ram>' node
  with the memory stats of init.

'ids="no"': supplement the children in the report with unique IDs, which
  may be used to infer the lifetime of children accross configuration
  updates in the future;

'requested="no"': if enabled, the report will contain information about
  all session requests initiated by the children.

'provided="no"': if enabled, the report will contain information about
  all sessions provided by all servers.

'session_args="no"': level of detail of the session information
  generated via 'requested' or 'provided'.

'child_ram="no"': if enabled, the report will contain a '<ram>' node
  for each child based on the information obtained from the child's RAM
  session.

Issue #2246
2017-02-28 12:59:22 +01:00
Norman Feske
e17811fb7a cli_monitor: API transition
Issue #1987
2017-02-28 12:59:20 +01:00
Norman Feske
8cb0dc9c16 init: session-label rewriting
This patch enhances init with the support for rewriting session labels
in the target node of a matching session route. For example, a Noux
instance may have the following session route for the "home" file
system:

<route>
  <service name="File_system" label="home">
    <child name="rump_fs"/>
  </service>
  ...
</route>

At the rump_fs file-system server, the label of the file-system session
will appear as "noux -> home". This information may be evaluated by
rump_fs's server-side policy. However, when renaming the noux instance,
we'd need to update this server-side policy.

With the new mechanism, the client's identity can be hidden from the
server. The label could instead represent the role of the client, or a
name of a physical resource. For example, the Noux route could be
changed to this:

<route>
  <service name="File_system" label="home">
    <child name="rump_fs" label="primary_user"/>
  </service>
  ...
</route>

When the rump_fs receives the session request, it is presented with the
label "primary_user". The fact that the client is "noux" is not taken
into account for the server-side policy selection.

Issue #2248
2017-02-28 12:59:20 +01:00
Norman Feske
b1a9addeb6 os/child_policy_dynamic_rom.h: API transition
Issue #1987
2017-02-28 12:59:19 +01:00
Josef Söntgen
15821e32ec nic: remove usage of deprecated env()
This commit includes changes to the Nic::Session_component interface.
We now pass the entire env to the component instead of only ram, rm and
the ep because we need the env to open connections from within the
Session_component implemenation. So far only the cadence_gem driver
needs this, though.

Issue #2280.
2017-02-28 12:59:18 +01:00
Josef Söntgen
3c57a8b3c2 usb_session: pass Region_map explicitly
Issue #2280.
2017-02-28 12:59:17 +01:00
Norman Feske
652f92c9c9 init: 'unscoped_label' session-routing attribute
This patch enhances init with the ability to route individual
environment sessions. Prior this patch, environment sessions could be
routed only by an all-encompassing '<service>' node that would match
both child-initiated and environment sessions.

In contrast to the existing 'label', 'label_prefix', and 'label_suffix'
attributes of '<service>' nodes, which are always scoped with ther name
of the corresponding child, the 'unscoped_label' allows the definition
of routing rules for all session requests, including init's requests for
the child's environment sessions. For example, to route the ROM session
requests for a child's dynamic linker, the following route would match:

<route>
  <service name="ROM" unscoped_label="ld.lib.so"> ... </service>
</route>

Issue #2215
2017-02-27 15:37:49 +01:00
Norman Feske
19868de69a launcher: API transition (deprecated warnings)
Issue #1987
2017-02-27 15:37:49 +01:00
Norman Feske
455bd9396e gems/terminal: support 'CHARACTER' events
This patch adds the handling of 'CHARACTER' events as emitted by the
input-filter's character generator (<chargen>). To avoid interpreting
press/release events twice (at the input filter and by the terminal's
built-in scancode tracker), the terminal's scancode tracker can be
explicitly disabled via <config> <keyboard layout="none"/> </config>.
In the future, the terminal's built-in scancode tracker will be
removed.

The use of the terminal with the input filter is illustrated by the
'terminal_echo.run' script.

Issue #2264
2017-02-27 15:37:49 +01:00
Norman Feske
859d23d92b os: introduce Input::Event::CHARACTER type
Character events are created via a dedicated 'Event' constructor that
takes an 'Event:Utf8' object as argument. Internally, the character is
kept in the '_code' member. The 'Utf8' value can by retrieved by the
recipient via the new 'utf8' method.

Issue #2264
2017-02-23 15:03:29 +01:00
Christian Helmuth
61b6dccf13 Queued read/write/read_ready in VFS and servers 2017-02-23 15:03:28 +01:00
Christian Helmuth
b805e001db Add READ_READY support to file-system session
The read-ready packet informs the server that the client wants to be
notified if a handle becomes readable. When becoming readable, the
server acknowledges packet and the client may queue a read requests
accordingly.
2017-02-23 14:54:51 +01:00
Sebastian Sumpf
aa602032dd vfs: dynamic configuration support 2017-02-23 14:54:48 +01:00
Josef Söntgen
e6e85fce74 os: remove Server from nic/component
Issue #2275.
2017-02-23 14:54:44 +01:00
Christian Helmuth
f9389109bf Support select in libc VFS plugin by read_ready() 2017-02-07 11:12:29 +01:00
Norman Feske
f8349b5bc7 os/slave.h: Remove use of global allocator
This patch eliminates the need for a global allocator by passing the
parent-service registry as argument to the 'Slave::Policy' constructor.

Fixes #2269
2017-02-07 11:12:28 +01:00
Christian Helmuth
c0d61858c3 Support for suspendable read in VFS and libC
The support has two parts. First, a VFS plugin now gets passed an
I/O-response handler callback on construction, which informs users of the
VFS that an I/O event occurred. This enables, for example, the libC to
check if blocking read can be completed. Further, the VFS file I/O
interface provides now functions for suspendable reads, i.e.,
queue_read() and complete_read().
2017-02-07 11:12:27 +01:00
Emery Hemingway
ded2f7e2d4 server/vfs: use Id_space to manage open nodes
Replacing the node lookup table with an Id_space removes the
limit on open handles per session and allows mutal associativity
between File_system handles and local VFS handles.

Fix #2221
2017-02-07 11:12:21 +01:00
Christian Helmuth
531e35ec42 Define Microseconds max value in timeout framework 2017-01-31 14:58:37 +01:00
Norman Feske
9fffb004b2 os/timer.h: disambiguate Timer::curr_time 2017-01-31 14:58:36 +01:00
Norman Feske
9adc6f1228 os: compile-time-defined parent-service registry
The new utility at 'os/static_parent_services.h' allows the creation of
a registry of parent services at compile time and thereby eliminates the need
for dynamic memory allocations whenever the set of services is known at
compile time as is the case for most uses of 'Slave::Policy'. The commit
showcases the utility in the bomb test.
2017-01-31 12:01:19 +01:00
Norman Feske
cd3a5852d6 Warn about the use of deprecated headers
This commit enables compile-time warnings displayed whenever a deprecated
API header is included, and adjusts the existing #include directives
accordingly.

Issue #1987
2017-01-31 12:01:18 +01:00
Norman Feske
02d5efcf3f init: apply routing to environment sessions
The init component used to create the CPU/RAM/PD/ROM sessions (the child
environment) for its children by issuing session requests to its parent,
which is typically core. This policy was hard-wired. This patch enables
the routing of the environment sessions of the children of init
according to the configured routing policy.

Because there is no hard-wired policy regarding the environment sessions
anymore, routes to respective services must be explicitly declared in
the init configuration. For this reason, the patch adjusts several run
scripts in this respect.

This patch removes the outdated '<if-args>' special handling of session
labels. The '<if-args>' feature will eventually be removed completely
(ref #2250)

Issue #2197
Issue #2215
Issue #2233
Issue #2250
2017-01-31 12:01:11 +01:00
Norman Feske
c1e399025e os: let empty label prefix/suffix match
This patch changes the 'Xml_node_label_score' to regard an empty
label_prefix or label_suffix as a match instead of a conflict. Until
now, there was no use case for an empty label_prefix. But with init's
new ability to route environment sessions, an empty prefix denotes any
child-initiated session (as oposed to an parent-initiated environment
session).

Issue #2215
Issue #2233
2017-01-23 16:46:05 +01:00
Christian Prochaska
dbb641d44a terminal session: return number of bytes written
To better support non-blocking terminal components, let the
'Terminal::Session::write()' function return the number of bytes
actually written.

Fixes #2240
2017-01-20 16:46:59 +01:00
Christian Prochaska
201bfabdac os/include/file_system_session: API transition (fix 'deprecated' warnings)
...and adaptation of the users of 'File_system::Session_rpc_object' to the
modified interface.

Issue #1987
2017-01-20 16:46:58 +01:00
Christian Prochaska
344f6f9e53 os/include/block: API transition (fix 'deprecated' warnings)
...and adaptation of the users of 'Block::Driver', 'Block::Root' and
'Block::Session_component' to the modified interface.

Issue #1987
2017-01-20 16:46:57 +01:00
Christian Prochaska
9be07d2244 os/include/nic: API transition (fix 'deprecated' warnings)
...and adaptation of the users of 'Nic::Root' and 'Nic::Session_component'
to the modified interface.

Issue #1987
2017-01-20 16:46:56 +01:00
Norman Feske
28d497549c report_rom/clipboard: API transition
Issue #1987
2017-01-13 13:07:14 +01:00
Norman Feske
a7f40b24ca Warn about the use of deprecated env() function
This patch enables warnings if one of the deprecate functions that rely
in the implicit use of the global Genode::env() accessor are called.

For the time being, some places within the base framework continue
to rely on the global function while omitting the warning by calling
'env_deprecated' instead of 'env'.

Issue #1987
2017-01-13 13:07:13 +01:00
Emery Hemingway
ec6cff7ba8 label timer session requests
Ref #1752
Ref #2224
2017-01-13 13:07:12 +01:00
Norman Feske
5e75ac4f87 timeout: change timer resolution from 100 to 5 ms
Issue #2225
2017-01-13 13:07:12 +01:00
Emery Hemingway
f957fcdd98 use Attached_dataspace at audio streams
Ref #1987
2017-01-13 13:07:10 +01:00
Martin Stein
b33c35a003 sd_card: get rid of wait_for_irq
Most implementations use a Signal_handler now to acknowledge the packet
instead of waiting for the transfer completion. The exceptions to that are
the non-DMA implementations for RPI and PL180

Ref #2206
2017-01-13 13:07:06 +01:00
Martin Stein
8c1e2f0555 regulator: add missing inline and static constexpr
The exynos5/consts header defined global symbols. If included by
multiple compilation units, this lead to multiple-definition errors.

Ref #2206
2017-01-13 13:07:05 +01:00
Stefan Kalkowski
6775b4077d os: platform_drv (arm) API transition (ref #1987) 2017-01-13 13:07:03 +01:00
Norman Feske
fa1a105d64 init: API transition
Ref #1987
2017-01-13 13:07:02 +01:00
Emery Hemingway
9bae4823a0 os/packet_stream: avoid global env
Pass an explicit Region_map reference to stream constructors.

Issue #1987
Issue #2034
2017-01-13 13:07:02 +01:00
Norman Feske
e91170a49c app/cli_monitor: API transition
Besides updating CLI monitor to the new API, the patch removes
Fiasco.OC-specific extensions that remained unused for a long time.

Ref #1987
2017-01-13 13:07:00 +01:00
Josef Söntgen
d10a69c7bc os: pass Env on in Attached_mmio constructor
Issue #1987.
2017-01-13 13:06:55 +01:00
Martin Stein
8d521036fb IPv4: fix buggy ascii_to implementations
Ref #2193
2017-01-13 13:05:47 +01:00
Martin Stein
cd708b24db IPv4: treat 0.0.0.0/0 as valid IPv4 prefix
0.0.0.0/x is now only seen as invalid if x > 0.

Ref #2193
2017-01-13 13:05:46 +01:00
Christian Helmuth
f2568856dd Hide implementation details in timeout framework
Fixes #2205
2017-01-13 13:05:45 +01:00
Martin Stein
eef18e1ecd net: introduce and apply Net::Port type
Thereby fix bug in the NIC router that previously used uint8_t values for ports in
some places.

Ref #2193
2016-12-23 16:52:10 +01:00
Norman Feske
dda054aa27 os: fix null termination in fb connection 2016-12-14 11:22:28 +01:00
Norman Feske
25a7ea3d40 base: rename 'Volatile_object' to 'Reconstructible'
Fixes #2151
2016-12-01 17:46:50 +01:00
Martin Stein
7eabe482b6 Increase RAM quota for Nic::Connection
At least on foc_x86_64, nic_router refused to create sessions for the
test clients as the session object's size exceeds the old quota
donation.

Ref #2139
2016-11-30 13:38:06 +01:00