Commit Graph

1063 Commits

Author SHA1 Message Date
Christian Helmuth
8b073f46df depot: update recipe hashes 2017-08-18 10:25:28 +02:00
Alexander Boettcher
4020766105 sel4: adapt timeouts of run scripts
Issue #2451
2017-08-18 10:24:47 +02:00
Alexander Boettcher
69e71147ef platform_drv: replace nova specific device_pd
by using generic Pd_session::map instead for eager memory mappings of DMA
memory.

Issue #2209
2017-08-18 10:24:47 +02:00
Emery Hemingway
5f35175644 app/sequence: execute components in sequence
Fix #2476
2017-08-18 10:24:46 +02:00
Emery Hemingway
ad6c94bb09 input_filter character mapping rules for the Workman layout
http://workmanlayout.org/

Fix #2473
2017-08-17 11:04:23 +02:00
Emery Hemingway
2deddf1e6d Check for symlink target length errors
Check for symlink length errors at the VFS library and the ram_fs and
vfs servers.

Fix #2462
2017-08-17 11:04:21 +02:00
Emery Hemingway
cfdac3f4c3 ram_fs: check symlink writes for termination bytes
Ref #2461
2017-08-17 11:04:21 +02:00
Alexander Boettcher
da5441292a sel4: add Wandboard Quad (iMX6) support
Issue #2451
2017-08-17 11:04:21 +02:00
Alexander Boettcher
782b457476 wand_quad: re-enable i.MX6 EPIT user level timer
Issue #2451
2017-08-17 11:04:21 +02:00
Alexander Boettcher
66c0c7b6f1 sel4: add x86_64 support
Issue #2451
2017-08-17 11:04:20 +02:00
Norman Feske
e31806d4e6 dde_rump: fix rump_iso test
The run script did not consider the routing for the environment ROM
sessions for the test-iso component. It routed all ROM sessions -
including the ones for the executable and the dynamic linker - to
fs_rom. The patch also adds the cap quota definitions required since
version 17.05 and fixes a whitespace inconsistency between the test
program and the run script.

Thanks to Steven Harp for reporting!
2017-08-17 11:04:20 +02:00
Christian Helmuth
e5f0dae598 terminal_log: carriage-return on newline
This is expected by hardware terminals, ie., terminal programs connected
to null-modem serial connections. Otherwise, the next line starts at the
column right after the last line.
2017-08-17 11:04:20 +02:00
Emery Hemingway
e2c1ea04ea depot: recipes for src/ram_blk, src/vfs
Ref #2446
2017-08-17 11:04:19 +02:00
Alexander Boettcher
95329c82e2 sel4: update to 5.2.0
Issue #2451
2017-08-17 11:04:19 +02:00
Christian Helmuth
145011b420 sd_card_drv: prevent deprecated warnings 2017-08-17 11:04:18 +02:00
Norman Feske
18cea099f0 depot: recipes for ahci, fs_rom, ram_fs, usb_block 2017-08-17 10:59:44 +02:00
Alexander Boettcher
24875c0ea8 platform_drv: add report about available pci devices
Issue #1359
2017-08-17 10:59:44 +02:00
Norman Feske
7d12d7a78f fs_report.run: replace test with dedicated program
The new version of the test exercises the combination of fs_report with
ram_fs and fs_rom as a more flexible alternative to report_rom.

It covers two corner cases that remained unaddressed by fs_rom and
ram_fs so far: First, the late installation of a ROM-update signal
handler at fs_rom right before the content of the file is modified.
Second, the case where the requested file is not present on the file
system at the creation time of the ROM session. Here, the ram_fs missed
to inform listeners for the compound directory about the later created
file.
2017-08-17 10:59:43 +02:00
Norman Feske
d649451c3d fs_rom: trigger deferred ROM-update signal
This patch ensures that fs_rom delivers a ROM-update notification in the
case where the underlying file was changed in-between requesting the
initial ROM content and registering the signal handler.
2017-08-17 10:59:43 +02:00
Norman Feske
bfcdab6079 fs_rom: make read-packet handling more robust
With the introduction of the CONTENT_CHANGED notifications delivered via
the packet stream, the assumption that no more than one READ packet is
in flight at all times does no longer hold. If the fs server responds
to a CONTENT_CHANGED packet while the fs_rom expects the completion of a
read request, the '_update_dataspace' method would prematurely return,
leaving the dataspace unpopulated. This patch solves the problem by
specifically waiting for the completion of the read request.
2017-08-17 10:59:43 +02:00
Norman Feske
0b580628cf file system: track content via version counter
This makes the delivery of CONTENT_CHANGED responses more robust.
2017-08-17 10:59:43 +02:00
Christian Prochaska
6a43f3c11a file system: use Id_space instead of Node_handle_registry
Fixes #2436
2017-08-17 10:59:43 +02:00
Norman Feske
0d1be4abe2 depot: update recipe hashes 2017-06-29 12:00:04 +02:00
Christian Helmuth
78f1fd29f7 Translate buffer-exceeded exception in Session_requester
Session_requester inherits from Dynamic_rom_session::Content_producer
which specifies the Buffer_capacity_exceeded exception which is thrown
on insufficient buffer space.
2017-06-29 12:00:03 +02:00
Norman Feske
a9da97bc4a init.run: lower timing sensitivity
Instead of relying on init's delayed reporting, we explicitly force init
to produce a new report with the up-to-date child-RAM information.
2017-06-29 12:00:03 +02:00
Norman Feske
ce01fd5321 depot: update drivers_interactive-pbxa9 to 17.05
With this commit, the wm.run script works for the pbxa9 platform when
using the base-hw kernel.
2017-06-29 12:00:02 +02:00
Norman Feske
4b862cb047 depot: fix src/pbxa9_drivers recipe
This is a follow-up commit to "os: move private declarations to driver
target".
2017-06-29 12:00:02 +02:00
Martin Stein
67fc1ec42b timeout test: prioritize timer driver over test
Ref #2400
2017-06-29 12:00:00 +02:00
Martin Stein
8d2ee6d040 timer okl4: remove deprecated const_cast
Ref #2400
2017-06-29 12:00:00 +02:00
Martin Stein
61f59818d3 pit/fiasco timeout: raise time error tolerance
On platforms that use the PIT timer driver, 'elapsed_ms' is pretty
inprecise/unsteady (up to 3 ms deviation) for a reason that is not
clearly determined yet. On Fiasco and Fiasco.OC, that use kernel timing,
it is the same. So, on these platforms, our locally interpolated time
seems to be fine but the reference time is bad. Until this is fixed, we
raise the error tolerance for these platforms in the run script.

Ref #2400
2017-06-29 11:59:59 +02:00
Christian Helmuth
82af06a42a sd_card: enable wand_quad/imx6 again 2017-06-29 11:59:58 +02:00
Christian Helmuth
ad824cea11 sd_card: cleanup driver library structure
Now both, the sd_card_drv and sd_card_bench use LIBS=sd_card_drv.
2017-06-29 11:59:58 +02:00
Emery Hemingway
73eb7a52a0 server/fs_report: do not append '.report to file names
Appending a suffix to report filenames was behavior inherited from
fs_log, it prevents creating files where directories need to be created
later. But unlike logs, only a subset of the hierarchy will report and
those that do append a component-local label, so the risk of collision
is low.

By removing the suffix fs_rom can serve reports back as ROM just as
report_rom does.

Ref #2422
2017-06-29 11:59:56 +02:00
Christian Prochaska
04f82721b1 fs_rom_update.run: add capability quota
Fixes #2453
2017-06-29 11:59:54 +02:00
Martin Stein
9b1c26ab7f timeout lib: dynamic interpolation-factor shift
In the timeout framework, we maintain a translation factor value to
translate between time and timestamps. To raise precision we scale-up
the factor when we calculate it and scale-down the result of its
appliance later again. This up and down scaling is achieved through
left and right shifting. Until now, the shift width was statically
choosen. However, some platforms need a big shift width and others a
smaller one. The one static shift width couldn't cover all platforms
which caused overflows or precision problems.

Now, the shift width is choosen optimally for the actual translation
factor each time it gets re-calculated. This way, we can take care that
the shift always renders the best precision level without the risk for
overflows.

Ref #2400
2017-06-29 11:59:54 +02:00
Martin Stein
99d971f348 timeout test: result buffer as struct
The result-buffer related members of the fast polling test are
the same for each buffered result type. Thus, we can make the
code easier by providing them through a struct.

Ref #2400
2017-06-29 11:59:53 +02:00
Norman Feske
c7b739cc61 bomb.run: define resource preservation for init
This patch increases init's preserved RAM and capability quota to
account for a current limitation of init with respect to the creation of
sessions to parent services:

In contrast to regular routed services, sessions to parent services are
created via 'Env::session'. The implementation of 'Env::session'
automatically upgrades session quotas on demand, which is the desired
behavior for regular 'Connection' objects. However, for sessions
established on the behalf of init's children, we would need to reflect
the error condition to the child instead of resolving it locally within
init (by subsidizing the session with init's quota). This patch leaves
this issue unresolved but fixes the symptom for the bomb test. It is
meant as an interim solution until the handling of parent sessions is
revised.
2017-06-29 11:59:53 +02:00
Norman Feske
5566aa0f94 bomb test: consider preserved PD session quota
This is an adaptation to the commit "core: prevent transfer of static PD
session quota".
2017-06-29 11:59:52 +02:00
Johannes Kliemann
1205607e78 os: add framebuffer based on platform_info of core
Issue #2242
2017-06-29 11:59:51 +02:00
Alexander Boettcher
04b2919a1a acpi_drv: use platform_info for rsdt/xsdt lookup
Issue #2242
2017-06-29 11:59:50 +02:00
Martin Stein
5fec4a2166 timeout test: raise error tolerance on nova + qemu
On QEMU, NOVA uses the pretty unstable TSC emulation as primary time
source. Thus, timeouts do not trigger with the common precision (< 50
ms). Use an error tolerance of 200 ms for this platform constellation.

Ref #2400
2017-06-29 11:59:49 +02:00
Josef Söntgen
8f577e9d25 usb: use if-else in packet_handler
Apparently this construct leads to a compiler errors like

  error: second operand to the conditional operator is of type ‘void’, but
  the third operand is neither a throw-expression nor of type ‘void’
2017-06-19 12:35:57 +02:00
Martin Stein
745fa4fd67 timeout test: improve documentation
Ref #2400
2017-06-19 12:35:56 +02:00
Martin Stein
71fd2b4cde timeout test: consider time shift between sessions
The fast polling test uses one timer session for raw 'elapsed_ms' calls
and another one for potentially interpolated 'curr_time' calls. It then
compares the two results against each other. However, until now, the
test did not consider that the duration of the session construction may
create a remarkable shift between the local times of the two sessions.
This shift is now determined and compensated before doing any
comparison.

Ref #2400
2017-06-19 12:35:56 +02:00
Christian Helmuth
ba9ef7fdee foc: use slab for meta-data in RPC cap factory 2017-06-19 12:35:56 +02:00
Christian Helmuth
c16288bcde timer/foc: use current KIP-clock API
This prevents L4_DEPRECATED warnings.
2017-06-19 12:35:55 +02:00
Martin Stein
1ea745ca2e signal test: do not test multiple handlers
The multiple-handlers test was checking if handlers at one signal were
activated in a fair manner. But on Qemu, the error tolerance of one was
too small in rare cases (2 of 100 runs). However, having multiple
handlers for the same signal context can be considered deprecated
anyway. With the recommended Signal_handler wrapper for signal sessions,
you can't use this feature. Thus, we removed the multiple-handlers test.

Fixes #2450
2017-06-19 12:35:55 +02:00
Christian Prochaska
a1b1525ec1 lx_fs: handle errors on mkdir correctly
Fixes #2444
2017-06-19 12:35:55 +02:00
Emery Hemingway
47c616ab94 server/fs_report: write reports to file-systems
Fix #2422
2017-06-19 12:35:54 +02:00
Emery Hemingway
1eb37fbe22 VFS: move 'sync' from 'File_system' to 'Directory_service'
The the parent 'Directory_service' interface is reachable from
'Vfs_handle', whereas the 'File_system' interface is not.

Fix #2437
Ref #2422
2017-06-12 14:32:07 +02:00
Emery Hemingway
1838fb4773 vfs/ram: check parent directory on file creation
Fix #2443
2017-06-12 12:44:23 +02:00
Alexander Boettcher
0523736ce4 acpi: limit device scope paths
Fixes #2371
2017-06-08 11:32:39 +02:00
Martin Stein
b8e2253e5f timeout: fix bug in interpolation
We incorrectly used 'unsigned long' (which is 32 or 64 bit depending on
the CPU architecture) for a timestamp (which is always 64 bit) in the
timer-connection implementation.

Ref #2435
2017-06-06 13:01:43 +02:00
Martin Stein
23337eb6e7 run/timeout: run also on arm w/o hw and qemu
On platforms were we do not have local time interpolation we can simply
skip the first test stage in the timeout test. This way, we can at least
test the rest.

Fixes #2435
2017-05-31 17:50:28 +02:00
Martin Stein
685f509a43 timer connection: no interpolation on arm w/o hw
On ARM, we do not have a component-local hardware time-source. The ARM
performance counter has no reliable frequency as the ARM idle command
halts the counter. Thus, we do not do local time interpolation on ARM.
Except we're on the HW kernel. In this case we can read out the kernel
time instead.

Ref #2435
2017-05-31 17:50:28 +02:00
Christian Helmuth
892ede515f depot: update recipe hashes 2017-05-31 16:18:01 +02:00
Christian Helmuth
67e33d3948 depot: adjust cap quotas in drivers_interactive_pc (64-bit) 2017-05-31 16:18:01 +02:00
Norman Feske
1e8689bafe depot: adjust cap quotas in drivers_interactive_pc 2017-05-31 13:16:25 +02:00
Norman Feske
7bb8e332a9 depot: adjust base recipe to removed headers
This patch updates the recipes for the base-<kernel> archives to the
recently removed os/config.h and os/timeout.h headers.
2017-05-31 13:16:25 +02:00
Sebastian Sumpf
c3cf7f3c3a riscv: ISA-1.9.1 and GCC-6.3.0 adaptions
Adds 1.9.1 support to base-hw

Note:
* the kernel timer is not working
* dynamic linking is currently not supported
2017-05-31 13:16:24 +02:00
Christian Prochaska
697f179e21 ram_fs: acknowledge packet in error case
Fixes #2434
2017-05-31 13:16:24 +02:00
Christian Helmuth
8bd0efced6 Remove obsolete RAM/CAP services from run scripts
Adapted launchpad and also the rm_fault and resource_request tests.

Issue #2407
2017-05-31 13:16:22 +02:00
Stefan Kalkowski
632ef28463 os: removal of deprecated os/config.h (fix #2431) 2017-05-31 13:16:22 +02:00
Emery Hemingway
16be05e530 Optional session label for Rtc connection constructor
Ref #2410
2017-05-31 13:16:22 +02:00
Christian Helmuth
febfb3bfe6 Fix source file location in RPi GPIO driver
The explicit relative location of the file instructed both target builds
to generate ../main.o which gloriously fails with parallel builds. The
produced range of error messages was astonishing ranging from "file
truncated" to "TLS reference in ../main.o mismatches non-TLS reference
in ../main.o".
2017-05-31 13:16:21 +02:00
Norman Feske
adb26b5216 API documentation refinements 2017-05-31 13:16:21 +02:00
Christian Helmuth
3c785a4ffb init: use service name from session class
Fixes issue with RAM constrains no longer effective.
2017-05-31 13:16:21 +02:00
Christian Helmuth
b37f411c3f ahci: optionally report discovered devices
Issue #2417
2017-05-31 13:16:20 +02:00
Christian Prochaska
16deaa9a72 timed_semaphore: fix deprecated warning
Fixes #2429
2017-05-31 13:16:19 +02:00
Stefan Kalkowski
0fb672b493 run: use default Qemu memory size for x86
Fix #2428
2017-05-31 13:16:19 +02:00
Emery Hemingway
25ec021fee server/vfs: ignore invalid handles at close()
Ref #2410
2017-05-31 13:16:18 +02:00
Christian Helmuth
923b3ec54d part_blk: prevent deprecated warning 2017-05-31 13:16:18 +02:00
Boris Mulder
d094ff995f part_blk: added optional partitions report 2017-05-31 13:16:16 +02:00
Norman Feske
0167d5af50 Integrate core's RAM service into the PD service
Fixes #2407
2017-05-31 13:16:14 +02:00
Norman Feske
3fc2a798b2 init: heuristics for DMA buffer allocations
If a child is allowed to constrain physical memory allocations but left
the 'phys_start' and 'phys_size' session arguments blank, init applies
builtin constraints for allocating DMA buffers.

The only component that makes use of the physical-memory constraint
feature is the platform driver. Since the built-in heuristics are
applied to the platform driver's environment RAM session, all
allocations performed by the platform driver satisfy the DMA
constraints.

To justify building-in these heuristics into init as opposed to
supplying the values as configuration arguments, the values differ
between 32 and 64 bit. The configuration approach would raise the need
to differentiate init configurations for both cases, which are
completely identical otherwise.

Issue #2407
2017-05-31 13:16:13 +02:00
Alexander Boettcher
420b66a1f0 platform_drv: remove usage of ram_connection
This commit removes support for limitation of RAM allocations from the
platform_drv. A subsequent commit adds this feature to init.

Issue #2398
Issue #2407
2017-05-31 13:16:13 +02:00
Norman Feske
71efb59873 terminal: add Cell_array destructor
With the capability-quota mechanism, the terminal-session won't always
be constructed completely on the first try (we may run out of caps in
the middle of the construction). Therefore, all members of the object
must be properly destructable. Furthermore, the patch replaces the
sliced heap by a heap to avoid allocating a new dataspace for each line
of the cell array.
2017-05-31 13:16:12 +02:00
Martin Stein
c70fed29f7 os/timer: interpolate time via timestamps
Previously, the Genode::Timer::curr_time always used the
Timer_session::elapsed_ms RPC as back end.  Now, Genode::Timer reads
this remote time only in a periodic fashion independently from the calls
to Genode::Timer::curr_time. If now one calls Genode::Timer::curr_time,
the function takes the last read remote time value and adapts it using
the timestamp difference since the remote-time read. The conversion
factor from timestamps to time is estimated on every remote-time read
using the last read remote-time value and the timestamp difference since
the last remote time read.

This commit also re-works the timeout test. The test now has two stages.
In the first stage, it tests fast polling of the
Genode::Timer::curr_time. This stage checks the error between locally
interpolated and timer-driver time as well as wether the locally
interpolated time is monotone and sufficiently homogeneous. In the
second stage several periodic and one-shot timeouts are scheduled at
once. This stage checks if the timeouts trigger sufficiently precise.

This commit adds the new Kernel::time syscall to base-hw. The syscall is
solely used by the Genode::Timer on base-hw as substitute for the
timestamp. This is because on ARM, the timestamp function uses the ARM
performance counter that stops counting when the WFI (wait for
interrupt) instruction is active. This instruction, however is used by
the base-hw idle contexts that get active when no user thread needs to
be scheduled.  Thus, the ARM performance counter is not a good choice for
time interpolation and we use the kernel internal time instead.

With this commit, the timeout library becomes a basic library. That means
that it is linked against the LDSO which then provides it to the program it
serves. Furthermore, you can't use the timeout library anymore without the
LDSO because through the kernel-dependent LDSO make-files we can achieve a
kernel-dependent timeout implementation.

This commit introduces a structured Duration type that shall successively
replace the use of Microseconds, Milliseconds, and integer types for duration
values.

Open issues:

* The timeout test fails on Raspberry PI because of precision errors in the
  first stage. However, this does not render the framework unusable in general
  on the RPI but merely is an issue when speaking of microseconds precision.

* If we run on ARM with another Kernel than HW the timestamp speed may
  continuously vary from almost 0 up to CPU speed. The Timer, however,
  only uses interpolation if the timestamp speed remained stable (12.5%
  tolerance) for at least 3 observation periods. Currently, one period is
  100ms, so its 300ms. As long as this is not the case,
  Timer_session::elapsed_ms is called instead.

  Anyway, it might happen that the CPU load was stable for some time so
  interpolation becomes active and now the timestamp speed drops. In the
  worst case, we would now have 100ms of slowed down time. The bad thing
  about it would be, that this also affects the timeout of the period.
  Thus, it might "freeze" the local time for more than 100ms.

  On the other hand, if the timestamp speed suddenly raises after some
  stable time, interpolated time can get too fast. This would shorten the
  period but nonetheless may result in drifting away into the far future.
  Now we would have the problem that we can't deliver the real time
  anymore until it has caught up because the output of Timer::curr_time
  shall be monotone. So, effectively local time might "freeze" again for
  more than 100ms.

  It would be a solution to not use the Trace::timestamp on ARM w/o HW but
  a function whose return value causes the Timer to never use
  interpolation because of its stability policy.

Fixes #2400
2017-05-31 13:16:11 +02:00
Christian Helmuth
307dd5768c Test for part_blk with GPT
Issue #1576
2017-05-31 13:16:11 +02:00
Christian Helmuth
03a1008f2e Use parted in part_blk test
Fixes #1576
2017-05-31 13:16:10 +02:00
Christian Helmuth
fd893a4f9b part_blk: support CHS and LBA extended partitions
Issue #1576
2017-05-31 13:16:10 +02:00
Stefan Kalkowski
9b350e7706 os: move private declarations to driver target
Ref #2403
2017-05-31 13:16:09 +02:00
Emery Hemingway
eaeb77a867 drivers/nic/linux: replace Thread_deprecated
Ref #1987
2017-05-31 13:16:09 +02:00
Stefan Kalkowski
10e2e223cd foc: remove obsolete features (ref #2405)
Removes the following Fiasco.OC specific features:
* GDB extensions for Fiasco.OC
* i.MX53 support for Fiasco.OC
* Kernel debugger terminal driver
* Obsolete interface Native_pd
* Obsolete function of interface Native_cpu
2017-05-31 13:16:08 +02:00
Christian Helmuth
24a0810cbc trace: disable out-of-metadata test step 2017-05-31 13:16:08 +02:00
Norman Feske
4d442bca30 Streamline exception types
This patch reduces the number of exception types by facilitating
globally defined exceptions for common usage patterns shared by most
services. In particular, RPC functions that demand a session-resource
upgrade not longer reflect this condition via a session-specific
exception but via the 'Out_of_ram' or 'Out_of_caps' types.

Furthermore, the 'Parent::Service_denied', 'Parent::Unavailable',
'Root::Invalid_args', 'Root::Unavailable', 'Service::Invalid_args',
'Service::Unavailable', and 'Local_service::Factory::Denied' types have
been replaced by the single 'Service_denied' exception type defined in
'session/session.h'.

This consolidation eases the error handling (there are fewer exceptions
to handle), alleviates the need to convert exceptions along the
session-creation call chain, and avoids possible aliasing problems
(catching the wrong type with the same name but living in a different
scope).
2017-05-31 13:16:07 +02:00
Norman Feske
1f4f119b1e Capability quota accounting and trading
This patch mirrors the accounting and trading scheme that Genode employs
for physical memory to the accounting of capability allocations.

Capability quotas must now be explicitly assigned to subsystems by
specifying a 'caps=<amount>' attribute to init's start nodes.
Analogously to RAM quotas, cap quotas can be traded between clients and
servers as part of the session protocol. The capability budget of each
component is maintained by the component's corresponding PD session at
core.

At the current stage, the accounting is applied to RPC capabilities,
signal-context capabilities, and dataspace capabilities. Capabilities
that are dynamically allocated via core's CPU and TRACE service are not
yet covered. Also, the capabilities allocated by resource multiplexers
outside of core (like nitpicker) must be accounted by the respective
servers, which is not covered yet.

If a component runs out of capabilities, core's PD service prints a
warning to the log. To observe the consumption of capabilities per
component in detail, the PD service is equipped with a diagnostic
mode, which can be enabled via the 'diag' attribute in the target
node of init's routing rules. E.g., the following route enables the
diagnostic mode for the PD session of the "timer" component:

  <default-route>
    <service name="PD" unscoped_label="timer">
      <parent diag="yes"/>
    </service>
    ...
  </default-route>

For subsystems based on a sub-init instance, init can be configured
to report the capability-quota information of its subsystems by
adding the attribute 'child_caps="yes"' to init's '<report>'
config node. Init's own capability quota can be reported by adding
the attribute 'init_caps="yes"'.

Fixes #2398
2017-05-31 13:16:06 +02:00
Norman Feske
773e08976d Assign cap quotas in run scripts and recipes
Issue #2398
2017-05-31 13:16:06 +02:00
Norman Feske
e44f65f3b2 core: RAM service based on 'Session_object'
This patch reworks the implementation of core's RAM service to make use
of the 'Session_object' and to remove the distinction between the
"metadata" quota and the managed RAM quota. With the new implementation,
the session implicitly allocates its metadata from its own account. So
there is not need to handle 'Out_of_metadata' and 'Quota_exceeded' via
different exceptions. Instead, the new version solely uses the
'Out_of_ram' exception.

Furthermore, the 'Allocator::Out_of_memory' exception has become an alias
for 'Out_of_ram', which simplifies the error handling.

Issue #2398
2017-05-31 13:16:06 +02:00
Norman Feske
aea5d03691 base: add Child_policy::Route::Diag flag
The 'diag' flag can be defined by a target node of a route in init's
configuration. It is propagated as session argument to the server, which
may evaluate the flag to enable diagnostic output for the corresponding
session.

Issue #2398
2017-05-31 13:16:06 +02:00
Norman Feske
3670f7735d base: use 'Quota_transfer::Account' for 'Service'
This patch makes use of the new 'Quota_transfer::Account' by the service
types in base/service.h and uses 'Quota_transfer' objects in
base/child.cc and init/server.cc.

Furthermore, it decouples the notion of an 'Async_service' from
'Child_service'. Init's 'Routed_service' is no longer a 'Child_service'
but is based on the new 'Async_service' instead.

With this patch in place, quota transfers do no longer implicitly use
'Ram_session_client' objects. So transfers can in principle originate
from component-local 'Ram_session_component' objects, e.g., as used by
noux. Therefore, this patch removes a strumbling block for turning noux
into a single threaded component in the future.

Issue #2398
2017-05-31 13:16:06 +02:00
Norman Feske
f02c8328db init: access Ram_session as const
This is now possible because the new 'used_ram' and 'ram_quota' RPC
functions are declared as const.

Issue #2398
2017-05-31 13:16:05 +02:00
Norman Feske
6609aafb05 Replace Quota_exceeded by Insufficient_ram_quota
This patch replaces the 'Parent::Quota_exceeded',
'Service::Quota_exceeded', and 'Root::Quota_exceeded' exceptions
by the single 'Insufficient_ram_quota' exception type.

Furthermore, the 'Parent' interface distinguished now between
'Out_of_ram' (the child's RAM is exhausted) from
'Insufficient_ram_quota' (the child's RAM donation does not suffice to
establish the session).

This eliminates ambiguities and removes the need to convert exception
types along the path of the session creation.

Issue #2398
2017-05-31 13:16:05 +02:00
Norman Feske
843dd179d7 base: remove int return types from 'Ram_session'
This patch replaces the existing C-style error codes with C++
exceptions.

Fixes #895
2017-05-31 13:16:04 +02:00
Norman Feske
58f44d39c5 base: use 'Ram_quota' in 'Ram_session' args
This patch replaces the former use of size_t with the use of the
'Ram_quota' type to improve type safety (in particular to avoid
accidentally mixing up RAM quotas with cap quotas).

Issue #2398
2017-05-31 13:16:04 +02:00
Norman Feske
ff68d77c7d base: new 'Ram_allocator' interface
The 'Ram_allocator' interface contains the subset of the RAM session
interface that is needed to satisfy the needs of the 'Heap' and
'Sliced_heap'. Its small size makes it ideal for intercepting memory
allocations as done by the new 'Constrained_ram_allocator' wrapper
class, which is meant to replace the existing 'base/allocator_guard.h'
and 'os/ram_session_guard.h'.

Issue #2398
2017-05-31 13:16:04 +02:00
Norman Feske
5a468919bb base: new session-creation helper types
This patch augments the existing session/session.h with useful types for
the session creation:

* The new 'Insufficient_ram_quota' and 'Insufficient_cap_quota'
  exceptions are meant to supersede the old 'Quota_exceeded' exception
  of the 'Parent' and 'Root' interfaces.

* The 'Session::Resources' struct subsumes the information about the
  session quota provided by the client.

* The boolean 'Session::Diag' type will allow sessions to operate in a
  diagnostic mode.

* The existing 'Session_label' is not also available under the alias
  'Session::Label'.

* A few helper functions ease the extraction of typed session arguments
  from the session-argument string.

Issue #2398
2017-05-31 13:16:04 +02:00
Norman Feske
c1b981ede4 Annotate session interfaces with CAP_QUOTA
The new 'CAP_QUOTA' enum value denotes the capability quota to be
transferred from the client to the server at session-creation time.

Issue #2398
2017-05-31 13:16:04 +02:00
Emery Hemingway
f7d80a9bf9 drivers/ahci: clean exit when no controllers are found
Fix #2402
2017-05-31 13:16:02 +02:00
Christian Helmuth
1828f70037 Fix deprecated warnings in servers
Issue #1987
2017-05-31 13:16:02 +02:00