Commit Graph

468 Commits

Author SHA1 Message Date
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This patch removes the outdated '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
Martin Stein
89085096d2 nic_router: new user interface and optimizations
Fixes #2139
2016-11-30 13:38:05 +01:00
Martin Stein
4eea2a058d net: let Net_address and Ipv4_address be packed
Ref #2139
2016-11-30 13:38:05 +01:00
Martin Stein
4281471a34 net: replace dump.h by modern print methods
Ref #2139
2016-11-30 13:38:05 +01:00
Martin Stein
da925b9cd7 net/ipv4: Ipv4_address_prefix::prefix_matches
The new method checks whether a given IPv4 address matches the IPv4
address prefix.

Ref #2139
2016-11-30 13:38:04 +01:00
Martin Stein
6276daecab net/ipv4: convenience methods valid() and print()
Both methods are now available for Ipv4_address as well as for
Ipv4_address_prefix. An IPv4 address is invalid if it contains zeros only.
An IPv4 address prefix is invalid if its address is invalid and its
prefix is 32.

Ref #2139
2016-11-30 13:38:04 +01:00
Martin Stein
791138ee63 os: introduce and test timeout framework
Ref #2170
2016-11-30 13:38:04 +01:00
Norman Feske
6a24d70120 Fix clang compile errors
Thanks Keiko Nakata for reporting!

Fixes #2164
2016-11-30 13:37:07 +01:00
Norman Feske
5a1cef6381 Make label prefixing more strict
This patch unconditionally applies the labeling of sessions and thereby
removes the most common use case of 'Child_policy::filter_session_args'.
Furthermore, the patch removes an ambiguity of the session labels of
sessions created by the parent of behalf of its child, e.g., the PD
session created as part of 'Child' now has the label "<child-name>"
whereas an unlabeled PD-session request originating from the child
has the label "<child-name> -> ". This way, the routing-policy of
'Child_policy::resolve_session_request' can differentiate both cases.

As a consequence, the stricter labeling must now be considered wherever
a precise label was specified as a key for a session route or a server-
side policy selection. The simplest way to adapt those cases is to use a
'label_prefix' instead of the 'label' attribute. Alternatively, the
'label' attribute may used by appending " -> " (note the whitespace).

Fixes #2171
2016-11-30 13:37:07 +01:00
Alexander Boettcher
6e66e51088 platform_drv: use ram_session_guard
Issue #1039
2016-11-30 13:37:06 +01:00
Alexander Boettcher
e32b78d95d os: extend ram_session_guard for platform_driver
Issue #1039
2016-11-30 13:37:06 +01:00
Alexander Boettcher
dffc1b0497 os: move ram_session_guard from nic_bridge to os
Issue #1039
2016-11-30 13:37:06 +01:00
Norman Feske
b44f0554bd Adapt high-level components to new parent API
This patch adjusts the various users of the 'Child' API to the changes
on the account of the new non-blocking parent interface. It also removes
the use of the no-longer-available 'Connection::KEEP_OPEN' feature.

With the adjustment, we took the opportunity to redesign several
components to fit the non-blocking execution model much better, in
particular the demo applications.

Issue #2120
2016-11-30 13:37:03 +01:00
Norman Feske
8bafb9d41b Adapt low-level components to new parent interface
This patch adjusts the components of the os repository as well as device
drivers to the new parent interface.

Issue #2120
2016-11-25 16:06:42 +01:00
Norman Feske
cfdbccc5c2 Remove blocking calls from root and parent RPCs
This is a redesign of the root and parent interfaces to eliminate
blocking RPC calls.

- New session representation at the parent (base/session_state.h)
- base-internal root proxy mechanism as migration path
- Redesign of base/service.h
- Removes ancient 'Connection::KEEP_OPEN' feature
- Interface change of 'Child', 'Child_policy', 'Slave', 'Slave_policy'
- New 'Slave::Connection'
- Changed child-construction procedure to be compatible with the
  non-blocking parent interface and to be easier to use
- The child's initial LOG session, its binary ROM session, and the
  linker ROM session have become part of the child's envirenment.
- Session upgrading must now be performed via 'env.upgrade' instead
  of performing a sole RPC call the parent. To make RAM upgrades
  easier, the 'Connection' provides a new 'upgrade_ram' method.

Issue #2120
2016-11-25 16:06:42 +01:00
Norman Feske
a27cbfd371 os: make report_rom/rom_module.h better reusable 2016-11-25 15:27:26 +01:00
Emery Hemingway
bae4ce5360 lib/vfs: deduplicate symlink and single_file
Issue #1891
2016-11-08 15:26:31 +01:00
Emery Hemingway
ddf3716cff vfs: pass Env and allocator when creating file-systems
Fix #1891
2016-11-08 15:26:31 +01:00
Emery Hemingway
beebd394fc lib/vfs: seperate implemention and API headers
Issue #1891
2016-11-08 15:26:30 +01:00
Alexander Boettcher
33ce649e85 audio: dissolve signal of Audio_in/out destruction
Fixes #2149
2016-11-08 15:26:30 +01:00
Christian Prochaska
82e228a715 usb_drv: raw session fixes
- use the correct memory free functions on errors
- report packet submit errors
- rename 'Usb::Packet_descriptor::transfer.timeout' as
 'Usb::Packet_descriptor::transfer.polling_interval'

Fixes #2135
2016-10-21 12:39:37 +02:00
Stefan Kalkowski
964239aa7a audio_mixer: use bool for mute XML report parsing
Fix #2123
2016-10-21 12:39:36 +02:00
Sebastian Sumpf
c2e7727f46 usb: add range check to UTF-16 string copy 2016-10-21 12:39:35 +02:00
Stefan Kalkowski
0cbfef7bf1 os: increase init's slack RAM quota (fix #2103) 2016-10-21 12:39:30 +02:00
Emery Hemingway
71f0757a30 transition Input infrastructure to new base API
* Supply Env to Input::Session_component
* Attach input event dataspace at Input::Client
* Process input events by lambda rather than pointer
* Supply Env and a label to Input::Connection

* Wm serves valid input_session to decorator
* Per-source signal handling at input_merger
* Base API update for dummy_input_drv, test_input
* Input API update for launcher, menu_view, terminal,
  mupdf, sdl, seoul, virtualbox

Ref #1987
2016-10-21 12:39:29 +02:00
Norman Feske
e370e08e01 Define Genode::size_t as unsigned long
Fixes #2105
2016-10-21 12:39:29 +02:00
Martin Stein
b3c877a8bf net: tcp packet class 2016-08-29 17:29:39 +02:00
Martin Stein
0ac37dfc6e net: address operator != and some UDP accessors 2016-08-29 17:29:39 +02:00
Martin Stein
53524be285 net/mac_address: mac_from_string function 2016-08-29 17:29:39 +02:00
Martin Stein
b50fe705d9 net/eth: sized-eth-frame class for creating frames 2016-08-29 17:29:38 +02:00
Martin Stein
47bc5c9a8d net/arp: further write accessors and protocol type 2016-08-29 17:29:38 +02:00
Martin Stein
136b80b7b8 net/dump.h: dump header info of network packets
Ref #114
2016-08-29 17:29:38 +02:00
Martin Stein
0ce79f3a8a udp: rename method calc_checksum update_checksum
In other contexts (IPv4) 'calc_checksum' merely returns a new checksum that is
then installed via 'checksum'. Thus, the UDP 'calc_checksum' that calculates AND
installs a new checksum is misleading.

Ref #114
2016-08-29 17:29:38 +02:00
Martin Stein
ee9c4679df net/ipv4: address prefix and print support 2016-08-29 17:29:38 +02:00
Martin Stein
0f8a39e5ac net: move MAC and IPV4 address to NET namespace
Ref #114
2016-08-29 17:29:38 +02:00
Stefan Kalkowski
dea4123053 os: remove Irq_activation and Irq_handler
Fix #2072
2016-08-29 17:29:36 +02:00
Stefan Kalkowski
f1535b2481 uart_drv: transition to new base API
* Unify uart drivers of different hardware drivers
* Remove deprecated IRQ activations
* Remove additional timer thread in Fiasco* KDB driver
* Move more generic UART definitions to specific supported
  platforms (e.g.: pl011 -> pbxa9)
* Move internal definitions from global to local headers

Ref #1987
Fix #2071
2016-08-29 17:29:35 +02:00
Emery Hemingway
482576fabb server/fs_log: improve client isolation
Use a seperate handle at each session.
Use SEEK_TAIL to append messages to files.
Increase packet buffer.
Refactor to component framework.

Fixes #1777
Issue #2060
2016-08-29 17:29:34 +02:00
Emery Hemingway
6018f594cf include/os/path.h: new path_from_label utility
Converts a session label hierarchy to a path hierarchy.

Issue #1777
Issue #2060
2016-08-29 17:29:33 +02:00
Alexander Boettcher
32bb0e131c gems: extend dither_painter to be used with vbox5
Issue #2059
2016-08-29 17:29:32 +02:00
Norman Feske
17c79a9e23 base: avoid use of deprecated base/printf.h
Besides adapting the components to the use of base/log.h, the patch
cleans up a few base headers, i.e., it removes unused includes from
root/component.h, specifically base/heap.h and
ram_session/ram_session.h. Hence, components that relied on the implicit
inclusion of those headers have to manually include those headers now.

While adjusting the log messages, I repeatedly stumbled over the problem
that printing char * arguments is ambiguous. It is unclear whether to
print the argument as pointer or null-terminated string. To overcome
this problem, the patch introduces a new type 'Cstring' that allows the
caller to express that the argument should be handled as null-terminated
string. As a nice side effect, with this type in place, the optional len
argument of the 'String' class could be removed. Instead of supplying a
pair of (char const *, size_t), the constructor accepts a 'Cstring'.
This, in turn, clears the way let the 'String' constructor use the new
output mechanism to assemble a string from multiple arguments (and
thereby getting rid of snprintf within Genode in the near future).

To enforce the explicit resolution of the char * ambiguity, the 'char *'
overload of the 'print' function is marked as deleted.

Issue #1987
2016-08-29 17:27:10 +02:00
Stefan Kalkowski
7f8f0f50ea block layer: transition to new API
Ref #1987
Fix #2058
2016-08-29 17:23:20 +02:00
Christian Helmuth
747137c201 Increase stack size of alarm schedulers 2016-08-10 11:07:47 +02:00
Emery Hemingway
e410be69a7 server/fs_rom: adjust to component API
- Use component API.
- Use signal handlers.
- Log ROM file path at error.
- Add Output printing support to os/path.h utility.

Fixes #2042
2016-08-10 11:07:47 +02:00
Ben Larson
a4f73ab1ad os: let fs clients install custom signal handlers
This patch adds the methods 'sigh_ack_avail()' and
'sigh_ready_to_submit()', which are needed to build asynchronously
operating file-system clients.

Fixes #2023
2016-07-15 11:38:25 +02:00
Emery Hemingway
0efd5a3078 server/report_rom: componentize
* Check report RAM donation and buffer size.
* Use explicit config ROM attachment.
* Pass Env to session connections.
* Replace logging macros.

Issue #2036
2016-07-15 11:38:24 +02:00
Emery Hemingway
2b8c1af9e0 remove 'filename' from ROM sesion args
Conveying the ROM filename as the final label element simplifies
routing policy and session construction.

Annotations by nfeske:

This commit also changes the ROM session to use base/log.h instead of
base/printf.h, which produced build error of VirtualBox because the
vbox headers have a '#define Log', which collides with the content of
base/log.h. Hence, this commit has to take precautions to resolve this
conflict.

The commit alse refines the previous session-label change by adding a
new 'Session_label::prefix' method and removing the use of 'char const *'
from this part of the API.

Fixes #1787
2016-07-11 13:24:36 +02:00
Emery Hemingway
f8337b511b Move Session_label from os to base
Session_label constructor now takes a bare string rather than a
serialized argument buffer.
Replace all instances of previous constructor with 'label_from_args'
function.

Issue #1787
2016-07-11 13:09:24 +02:00
Christian Helmuth
d8c34237bf vfs: default constructor for Dirent and Stat
Fixes #1743
2016-06-28 11:09:27 +02:00
Emery Hemingway
0a01edded2 Path::strip_last_element removes path delimiter
Remove the trailing slash of a path where the path is not "/".
New Path::append_element convenience function.

Fixes #1744
2016-06-28 11:09:27 +02:00
Sebastian Sumpf
d48219138c usb: transition to the new base API
* remove all 'Genode::env()' calls
* use attached roms to read configuration
* use compoenent framework
* remove all PDBG, PINF, PWRN macros

Issue #1987
Fixes #2019
2016-06-28 11:09:25 +02:00
Stefan Kalkowski
a145e6ad70 nic_bridge: transition to the new base API
* use Component::* instead of Server::*
* do not use old printf format anymore
* do not use old Genode::env()->heap() anymore
* avoid pointers where possible, and use references instead
* throw away the thread-safe variants of list and AVL tree,
  nic_bridge became single-threaded in the past
* introduce Ram_session_guard instead of Allocator_guard

Issue #1987
2016-06-28 11:09:23 +02:00
Emery Hemingway
8ae2f65da8 uniform XML boolean attribute access
Replace 'attribute(...).has_value("yes")`
with 'attribute_value(..., false)'.

This allows for boolean configuration to be set with values such as
"true", "false", "yes", "no", or "1", "0".

Fixes #2002
2016-06-22 12:21:42 +02:00
Emery Hemingway
877676c29f Make label-based policy selection more strict
A configuration policy must match against a policy node label,
label_prefix, or label_suffix atttribute. A fallback to
<default-policy/> is provided as a label wildcard.

Fixes #1901
2016-06-22 12:21:41 +02:00
Sebastian Sumpf
1cfa14b2f2 os: add stack based backtrace support
Fixes odyssey #2001
2016-06-22 12:17:16 +02:00
Emery Hemingway
930e2638b2 lib/libc: remove internal use of getcwd at fstatat
The implementation and behaviour of 'getcwd' is externally defined.

Add move operators to Genode::Path.

Issue: #1984
2016-06-07 08:06:35 +02:00
Sebastian Sumpf
4994616346 os: packets without playload in packet stream
issue #1988
2016-06-04 13:45:26 +02:00
Josef Söntgen
ee804a84fa usb: do not allocate raw packets without size
Allocating a packet in the packet stream without a payload is not
allowed. Therefore we have to allocate CTRL message packets, that do
not have a payload, with a bogus length instead.
2016-05-26 15:54:17 +02:00
Norman Feske
97a41394b4 Documentation changes on account of the book
This patch removes the outdates doc/architecture.txt since the
topics are covered by the book. We keep repos/os/doc/init.txt
because it contains a few details not present in the book (yet).
The patch streamlines the terminology a bit. Furthermore, it
slightly adjusts a few source-code comments to improve the book's
functional specification chapter.
2016-05-26 15:54:16 +02:00
Alexander Boettcher
6b94e761f8 input/ps2: add volume up/down/mute, sysrq, screenlock
This commit renames KEY_COFFEE to KEY_SCREENLOCK, which is more
descriptive.

Issue #1962
2016-05-26 15:54:15 +02:00
Norman Feske
807be83b1b Remove inconsistent use of 'is_' prefix
Fixes #1963
2016-05-23 15:52:39 +02:00
Norman Feske
15141f3ca7 Remove hand-crafted Rpc_functions typedefs 2016-05-23 15:52:39 +02:00
Norman Feske
a99989af40 Separation of thread operations from CPU session
This patch moves the thread operations from the 'Cpu_session'
to the 'Cpu_thread' interface.

A noteworthy semantic change is the meaning of the former
'exception_handler' function, which used to define both, the default
exception handler or a thread-specific signal handler. Now, the
'Cpu_session::exception_sigh' function defines the CPU-session-wide
default handler whereas the 'Cpu_thread::exception_sigh' function
defines the thread-specific one.

To retain the ability to create 'Child' objects without invoking a
capability, the child's initial thread must be created outside the
'Child::Process'. It is now represented by the 'Child::Initial_thread',
which is passed as argument to the 'Child' constructor.

Fixes #1939
2016-05-23 15:52:39 +02:00
Josef Söntgen
59aec6114b vfs_block: remove diagnostic warnings
These warnings are triggered by requests either using byte offsets or
reading a number of bytes that is not a multiple of the block size as
well as by components using the plugin with a different block size than
the backend block session provides.

Fixes #1964.
2016-05-23 15:52:38 +02:00
Norman Feske
a7b3072cc2 Pass Env & as first argument to connection objects
This patch supplements each existing connection type with an new
constructor that is meant to replace the original one. The new
one takes a reference to the component's environment as argument and
thereby does not rely on the presence of the globally accessible
'env()' interface.

The original constructors are marked as deprecated. Once we have
completely abolished the use of the global 'env()', we will remove them.

Fixes #1960
2016-05-23 15:52:37 +02:00
Norman Feske
8d797105b3 Move Attach_*dataspace utils from os to base
Fixes #1958
2016-05-23 15:52:36 +02:00
Johannes Schlatow
27a73b89f0 net: write accessors for Ipv4_packet
Also adds header-checksum calculation function.

Fixes #1915
2016-05-23 15:52:34 +02:00
Johannes Schlatow
bed870ead4 net: fix header_length field in Ipv4_packet
Replace size_t by uint8_t in accessors for the IPv4 header fields
'version' and 'header_length' - uint8_t is the smallest integral type
for 4 bit of information. Note, as the _internet header length_ field is
defined to reflect the number of 32-bit words the header occupies, we
also stick to the specification with our accessor.

Issue #1915
2016-05-23 15:49:57 +02:00
Christian Helmuth
abed38e8ac net: transform packet data accessor into template
Supports stronger typing of raw accesses and const correctness.

Issue #1915
2016-05-23 15:49:56 +02:00
Norman Feske
fd401bdf53 Thread API cleanup
This patch cleans up the thread API and comes with the following
noteworthy changes:

- Introduced Cpu_session::Weight type that replaces a formerly used
  plain integer value to prevent the accidental mix-up of
  arguments.
- The enum definition of Cpu_session::DEFAULT_WEIGHT moved to
  Cpu_session::Weight::DEFAULT_WEIGHT
- New Thread constructor that takes a 'Env &' as first argument.
  The original constructors are now marked as deprecated. For the
  common use case where the default 'Weight' and 'Affinity' are
  used, a shortcut is provided. In the long term, those two
  constructors should be the only ones to remain.
- The former 'Thread<>' class template has been renamed to
  'Thread_deprecated'.
- The former 'Thread_base' class is now called 'Thread'.
- The new 'name()' accessor returns the thread's name as 'Name'
  object as centrally defined via 'Cpu_session::Name'. It is meant to
  replace the old-fashioned 'name' method that takes a buffer and size
  as arguments.
- Adaptation of the thread test to the new API

Issue #1954
2016-05-23 15:49:55 +02:00
Emery Hemingway
52cc50174f Amend File_system session with SEEK_TAIL support
Used to read or write from the end of a file when multiple packets may
be in transit.

Supported by ram_fs, rump_fs, and vfs servers.

Fixes #1775
2016-05-09 13:10:53 +02:00
Christian Helmuth
b38c5006d8 vfs: support UNLINK_ERR_NO_ENTRY in TAR file system
We report UNLINK_ERR_NO_PERM only for files in TAR archive, otherwise
UNLINK_ERR_NO_ENTRY is returned. This permits the arbitrary layering of
file systems with support for proper ENOENT reporting, for example,
when using 'rm -f non_existent_file' that aborts if EPERM is wrongly
reported.
2016-05-09 13:10:53 +02:00
Norman Feske
7274ca997d Remove Genode::Process from API
This patch makes the former 'Process' class private to the 'Child'
class and changes the constructor of the 'Child' in a way that
principally enables the implementation of single-threaded runtime
environments that virtualize the CPU, PD, and RAM services. The
new interfaces has become free from side effects. I.e., instead
of implicitly using Genode::env()->rm_session(), it takes the reference
to the local region map as argument. Also, the handling of the dynamic
linker via global variables is gone. Now, the linker binary must be
provided as constructor argument.

Fixes #1949
2016-05-09 13:10:52 +02:00
Norman Feske
b49e588c1c Assign threads to PD at its creation time
This patch replaces the former 'Pd_session::bind_thread' function by a
PD-capability argument of the 'Cpu_session::create_thread' function, and
removes the ancient thread-start protocol via 'Rm_session::add_client' and
'Cpu_session::set_pager'. Threads are now bound to PDs at their creation
time and implicitly paged according to the address space of the PD.

Note the API change:

This patch changes the signature of the 'Child' and 'Process' constructors.
There is a new 'address_space' argument, which represents the region map
representing the child's address space. It is supplied separately to the
PD session capability (which principally can be invoked to obtain the
PD's address space) to allow the population of the address space
without relying on an 'Pd_session::address_space' RPC call.
Furthermore, a new (optional) env_pd argument allows the explicit
overriding of the PD capability handed out to the child as part of its
environment. It can be used to intercept the interaction of the child
with its PD session at core. This is used by Noux.

Issue #1938
2016-05-09 13:10:52 +02:00
Norman Feske
2bc8a0f76a Move XML util from os to base repository
Since the dynamic linker depends on the XML utils and we plan to replace
the ancient 'Arg_string' with XML, it is time to move the 'Xml_node' and
'Xml_generator' to base/include.
2016-05-09 13:10:52 +02:00
Norman Feske
73b463cdbb Signal_handler: remove num argument from handler
We will eventually remove the delivery of the number of occurred signals
to the recipient. There haven't been any convincing use cases for this
feature. In the contrary, it actually led to wrong design choices in the
past where the rate of signals carried information (such as the progress
of time) that should better be obtained via an explicit RPC call.

The old 'Signal_rpc_member' template retains the old interface for now.
But the new 'Signal_handler' omits the 'unsigned' argument from the
handler function.
2016-05-09 13:10:52 +02:00
Emery Hemingway
549f77eafe Catch exceptions when creating VFS
Catch exceptions at File_system_factory::create.
Print error message in Dir_file_system.

Fixes #1786
2016-05-09 13:10:51 +02:00
Emery Hemingway
4aafa882d8 XML node type and attribute name string accessors
Issue #1786
2016-05-09 13:10:51 +02:00
Norman Feske
511acad507 Consolidate RM service into PD session
This patch integrates three region maps into each PD session to
reduce the session overhead and to simplify the PD creation procedure.
Please refer to the issue cited below for an elaborative discussion.

Note the API change:

With this patch, the semantics of core's RM service have changed. Now,
the service is merely a tool for creating and destroying managed
dataspaces, which are rarely needed. Regular components no longer need a
RM session. For this reason, the corresponding argument for the
'Process' and 'Child' constructors has been removed.

The former interface of the 'Rm_session' is not named 'Region_map'. As a
minor refinement, the 'Fault_type' enum values are now part of the
'Region_map::State' struct.

Issue #1938
2016-05-09 13:10:51 +02:00
Josef Söntgen
133c46a784 usb_drv: handle EP stall in Usb_session
Fixes #1945.
2016-05-09 13:09:54 +02:00
Alexander Boettcher
463b39fc73 xml reporter: support different start node name
Currently the report name is used implicitly as first xml node name for the
report.  This is inconvenient if one component wants to generate various xml
reports under various names (e.g. to steer consumers/clients slightly
differently) but with the same xml node tree structure.

Fixes #1940
2016-05-09 13:09:54 +02:00
Emery Hemingway
ccd50cc9f5 Vfs::Dir_file_system: adjust rename error priority
CROSS_FS error must not propagate before NO_PERM.
New order is OK, NO_PERM, CROSS_FS, NO_ENTRY.

Fixes #1900
2016-04-25 11:02:02 +02:00
Christian Helmuth
579f4d4991 vfs: count of written bytes in Fs_file_system 2016-04-25 10:48:01 +02:00
Emery Hemingway
1d301e9c14 lib/vfs: consistent device and inode enumeration
Issue #1751
2016-04-25 10:47:54 +02:00
Emery Hemingway
b8e52189d5 lib/vfs: new permissions errors
New errors STAT_ERR_NO_PERM, DIRENT_ERR_NO_PERM, and READLINK_NO_PERM to
distinguish lookup errors from permissions or other errors.

Issue #1751
2016-04-25 10:47:54 +02:00
Emery Hemingway
14ca140135 lib/vfs: fix disappearing <dir><dir/></dir>
Issue #1751
2016-04-25 10:47:53 +02:00
Emery Hemingway
4a58154e07 server/vfs: refactor for client isolation
VFS handles are allocated from per-session heaps.

Fixes #1751
2016-04-25 10:47:53 +02:00
Emery Hemingway
e22cd98a4f File_system::Connection: session upgrading
Upgrade the File_system session RAM quota when an Out_of_metadata
exception is caught.

Issue #1751
Issue #1909
2016-04-25 10:47:52 +02:00
Emery Hemingway
cb952d2087 obscure File_system::Out_of_node_handles exception
Replace the Out_of_node_handles exception with Out_of_metadata.
Clients need to know when the server is out of internal resources,
but not why.

Cleanup and sort the errors at file_system_session.h.
Remove 'Size_limit_reached exception' from File_system, which was
internal to ram_fs.

Issue #1751
Fixes #1909
2016-04-25 10:47:52 +02:00
Emery Hemingway
58632ab8b5 lib/vfs: improve memory safety at ram file system
Reference count files to prevent dangling handles.
Catch out-of-memory conditions and throw NO_SPACE.

Issue #1751
2016-04-11 12:56:54 +02:00
Emery Hemingway
82a7799638 lib/vfs: pass handle allocator to open(...)
Opening a VFS handle previously involved allocating from the global heap
at each VFS file system. By amending open with an allocator argument,
dynamic allocation can be partitioned.

A new close method is used to deallocate open handles.

Issue #1751
Issue #1891
2016-04-11 12:56:54 +02:00
Norman Feske
051e84c4b4 Move server API concept to base framework
This commit introduces the new `Component` interface in the form of the
headers base/component.h and base/entrypoint.h. The os/server.h API
has become merely a compatibilty wrapper and will eventually be removed.
The same holds true for os/signal_rpc_dispatcher.h. The mechanism has
moved to base/signal.h and is now called 'Signal_handler'.

Since the patch shuffles headers around, please do a 'make clean' in the
build directory.

Issue #1832
2016-04-11 11:51:46 +02:00
Christian Prochaska
146c694513 Reduce the maximum LOG session string length
The maximum possible string length is defined by the platform with the
lowest maximum IPC payload size (currently OKL4).

Fixes #1919
2016-04-11 11:51:43 +02:00
Tomasz Gajewski
611a73be36 Fixed inconsistency in XML parser
Changed Xml_node::next() to treat text between nodes in the same
manner like Xml_node::_init_end_tag which counts number of subnodes.

Issue #1424
2016-03-15 11:57:52 +01:00
Norman Feske
9a3185f8ed base-linux: remove chroot support
Fixes #1903
2016-03-08 17:00:54 +01:00
Emery Hemingway
23c1d4c66d libc, vfs: rename improvements
Perform POSIX rename checks at the libc VFS plugin.
Clarify rename at VFS fs, ram, single, and tar file systems.

Issue #1900
Fixes #1782
2016-03-07 12:40:04 +01:00
Norman Feske
5d559a0699 Move util/volatile_object.h from os to base 2016-03-07 12:34:44 +01:00
Christian Helmuth
20c9b02326 Mark Server::Entrypoint noncopyable 2016-02-05 10:47:45 +01:00
Sebastian Sumpf
716eab21e3 usb_drv: change Usb session and raw driver
- Use 'label' attribute to identify device instead of
  bus/dev and vendor_id/product_id

- Implement release_interface RPC

- Report 'label' as well as 'bus' and 'dev'

- Add policy handling to raw driver (includes reconfiguration
  at runtime)

- Use own memory backing store for large DMA allocations

Issue #1863.
2016-01-27 16:15:34 +01:00
Norman Feske
fc6c2537ee vfs: add Rom_file_system::dataspace
By providing this function, we can start a mounted ROM module as program
under Noux.
2016-01-26 16:20:37 +01:00
Norman Feske
900c795df2 os: add Attached_rom_dataspace::cap accessor
The accessor works analogously to the Attached_dataspace.
2016-01-26 16:20:37 +01:00
Alexander Boettcher
82e35326b7 os: support different binary name for slaves
Issue #1848
2016-01-13 14:59:04 +01:00
Emery Hemingway
3087b72438 os/path.h: new convenience functions
Infix operators == and !=.
Capacity accessor.

Issue #403
2016-01-13 14:49:11 +01:00
Emery Hemingway
2d50552522 Remove Genode namespace from File_system
Fixes #1845
2016-01-08 14:48:52 +01:00
Emery Hemingway
56c637c1f6 VFS tar: always set dirent type
Assume tar nodes with missing records are directories.

Fixes #1843
2016-01-08 14:37:58 +01:00
Christian Helmuth
6699290766 Optional label in Nic::Connection constructor
Fixes #1826
2015-12-17 15:15:24 +01:00
Christian Helmuth
c43bd472ac packet_stream: peek_packet() should be const
This also fixes the wrong return type.

Fixes #1800
2015-12-17 11:12:53 +01:00
Christian Helmuth
14c8380507 xml_generator: support bool and integer types
The Xml_generator is extended by overloads for bool as well as signed
and unsigned int, long, and long long.

Fixes #1819
2015-12-17 10:38:19 +01:00
Emery Hemingway
cffa4fddec util/xml_node.h: mark for_each_node const
Issue #1801
2015-12-10 13:16:24 +01:00
Sebastian Sumpf
6a186f6ed0 packet_stream: implement peek_packet function
issue #1800
2015-12-01 15:12:11 +01:00
Josef Söntgen
627ecc44d2 Revert "os: reset Audio_out stream prior to calling start"
This reverts commit d8b95c263b.

Some clients might want to fiddle with the clients play position
(e.g. the mixer) within 'Audio_out::start()' and we might reset
it to an old value if we do it afterwards.

Fixes #1796.
2015-11-29 18:17:09 +01:00
Josef Söntgen
6d1e417250 os: reset one packet further in Audio_out stream
Since all Audio_out server components loop over the packet stream
queue it is save to reset the tail position to one after the play
position. We have to do this because we do not know exactly when
the play position changes (i.e. the driver has processed the packet)
and we might end up with a tail position before the current play
position.

Issue #1796.
2015-11-29 18:17:09 +01:00
Norman Feske
3f6ff39d76 os: improved label matching
This patch unifies the mechanism of selecting server-side policies and
taking session-routing decisions based on session labels. In both cases,
XML nodes are scored against session labels. The score depends on the
XML attributes 'label' (exact match), 'label_prefix', and
'label_suffix'.

Issue #1766
2015-11-29 18:17:05 +01:00
Emery Hemingway
ee25dcbae3 VFS: check path on the symlink node readlink
Fixes #1790
2015-11-29 18:17:05 +01:00
Emery Hemingway
1d92631ef0 VFS, File_system: Not_empty
Unlink returns an error for non-empty directories when the backend does
not support recursive unlinking.

Fixes #1750
2015-11-29 18:17:05 +01:00
Emery Hemingway
6cb0f3bb71 VFS ram: remove quota
Fixes #1780
2015-11-29 18:17:05 +01:00
Christian Prochaska
25643fa00a init: fix uninitialized variables
Fixes #1753
2015-11-29 18:17:04 +01:00
Josef Söntgen
e13971fcf0 xml_generator: add attribute String<N> method
Make it possible to directly pass on a Genode::String<N> object instead
of using Genode::String<N>.string() by hand.

Fixes #1783.
2015-11-29 18:17:04 +01:00
Alexander Boettcher
92cb9eb06d x86: support dynamic upgrades for platform driver
and, especially, for the device_pd. Account all resources per platform session
separately.

Fixes #1539
2015-11-29 18:17:02 +01:00
Alexander Boettcher
4c4e7c64d0 x86: start per platform session separate device_pd
Issue #1539
2015-11-27 12:18:54 +01:00
Alexander Boettcher
b902f42482 os: support reference ram cap for slaves
Issue #1539
2015-11-27 12:18:54 +01:00
Christian Helmuth
50dd0dda38 Notify report-rom client on signal-handler registration
Notify client initially to enforce a client-side ROM update. Otherwise,
a server-side ROM update between session creation and signal-handler
registration would go unnoticed.

Issue #1788
2015-11-27 12:18:54 +01:00
Norman Feske
f9d0e57b0e decorator: fix hover detection 2015-11-27 12:18:53 +01:00
Norman Feske
e4678a4dc1 decorator: do not defer stacking changes
This patch changes the decorator to always apply stacking-order changes
immediately instead of deferring the re-stacking of the nitpicker views
to the next call of 'update_nitpicker_views'. The deferred application
did not always work when more then one windows changed their stacking
position at once because the cached '_neighbor' values interfered with
each other.

The eager re-stacking should not have negative effects on the user
experience because, in contrast to re-positioning, re-stacking a rare
operation.
2015-11-27 12:18:53 +01:00
Norman Feske
acb0ddd9ef decorator: generalize include/decorator/window.h
This change makes it possible to reuse the generic window decorator
classes in include/decorator/ for decorators of a different structure.
E.g., instead of painting decorations on a single nitpicker session,
each window may paint its decorations into additional window-specific
nitpicker sessions.
2015-11-27 12:18:53 +01:00
Norman Feske
909c4c9ffc os: define storage type of rgb888 as 32-bit value
The original version used unsigned long as storage type, which wasted
memory on 64-bit machines.
2015-11-27 12:18:52 +01:00
Norman Feske
853378960c init: prevent division by zero
During the reconfiguration of init, the CPU-quota computation caused
init to produce a division-by-zero exception.
2015-11-27 12:18:52 +01:00
Alexander Boettcher
3789a75ed6 base: support ascii_to for uint64_t
Issue #1764
2015-11-18 12:22:07 +01:00
Norman Feske
7920b57d34 Consider byte offset in Attached_io_mem_dataspace
Ref #1764
2015-11-18 12:22:07 +01:00
Josef Söntgen
fe1a0e5f65 os: add mixer utility header for Channel struct
The notion of a channel is shared by the mixer backend as well as the
frontend. To make dealing with reports between those easier move the
Channel definition to a global header.

Issue #1770.
2015-11-18 12:22:06 +01:00
Sebastian Sumpf
06fe755f8c noux: Enable setting of file handle flags
Fixes #1765
2015-11-18 12:22:04 +01:00
Josef Söntgen
83e5a64864 os: extend Audio_out with queue query method
Issue #1767.
2015-11-09 13:08:30 +01:00
Josef Söntgen
d8b95c263b os: reset Audio_out stream prior to calling start
Issue #1767.
2015-11-09 13:08:30 +01:00
Josef Söntgen
de8794321b os: add tail accessor to Audio_out stream
Issue #1767.
2015-11-09 13:08:30 +01:00
Josef Söntgen
663e8fad9b os: increase Audio_out queue size
Issue #1767.
2015-11-09 13:08:30 +01:00
Alexander Boettcher
bdaf79e3b8 x86: extend io_mem call of platform_drv
Support allocation of sub I/O memory spaces of one I/O memory bar with
write-combined caching attribute.
2015-11-04 14:09:25 +01:00
Emery Hemingway
8ed6364388 refactor Vfs::Ram_file_system
Issue #1648
2015-11-04 14:09:24 +01:00
Emery Hemingway
cdb44850d3 Strip slashes from Path in Vfs::Fs_file_system
strip_last_element at Path removes everything after the trailing slash,
which causes lookup failures at the VFS server when opening directories.

Issue #1648
2015-11-04 14:09:24 +01:00
Emery Hemingway
1c6164a0c5 File_system session: broaden error handling
Throw Invalid_name, No_space, and Out_of_node_handles where appropriate.

Catch the new range of errors thrown by at the VFS.
Catch Out_of_node_handles at the VFS, but print a message and re-throw.

Issue #1648
2015-11-04 14:09:24 +01:00
Emery Hemingway
1d4bd10701 fix handle leak in Vfs::Fs_file_system
Issue #1648
2015-11-04 14:09:23 +01:00
Emery Hemingway
48fd034cfe New session arguments at File_system connection
Session root and writeablity may be specified at the session
convenience constructor.

Issue #1648
2015-11-04 14:09:23 +01:00
Emery Hemingway
2da239d0c8 void sync(char const *path)
Sync now takes a path argument at VFS and File system interfaces.

Issue #1648
2015-11-04 14:09:23 +01:00
Norman Feske
a528aa097a init: add 'label' criterion for session routing
This patch introduces a shortcut for conditional session routes of the
form '<if-arg key="label" value="..."/>'. With this change, the label
can be directly specified as 'label' attribute of an '<any-service>' or
a '<service>' node. The '<if-arg>' mechanism was not documented anyway
and I hope to be able to ultimately remove it.
2015-11-03 17:04:16 +01:00
Sebastian Sumpf
2b429ee84c base: Dispatch server signal in entry point
Currently, when a signal arrives in the main thread, the signal dispatcher is
retrieved and called from the main thread, the dispatcher uses a proxy object
that in turn sends an RPC to the entry point. This becomes a problem when the
entry point destroys the dispatcher object, before the dispatch function has
been called by the main thread. Therefore, the main thread should simply send an
RPC to the entry point upon signal arrival and the dispatching should be handled
solely by the entry point.

Issue #1738
2015-10-28 15:06:22 +01:00
Sebastian Sumpf
78e18981fb nic session: fix quota check
Check for overflow.

Issue #1735
2015-10-09 16:38:48 +02:00
Emery Hemingway
b121212b23 init: improve priority upgrade message
Fixes #1731
2015-10-09 16:36:31 +02:00
Norman Feske
afac1e86bb decorator: window colors and controls
This patch improves the decorator in two ways. First, it enables the
assignment of window colors depending on the window labels. This
configuration can be changed dynamically. Second, it adds the handling
of window controls for closing, maximizing, minimizing windows.

Issue #1689
Fixes #1688
2015-10-06 12:18:54 +02:00
Norman Feske
02d07655ce os: make internal report_rom classes reusable
This patch moves the formerly internal classes of the report-ROM service
to the public location os/include/report_rom/ so that they can be reused
by other components such as the upcoming clipboard.
2015-10-06 12:18:53 +02:00
Norman Feske
6ecbc419c0 Xml_node, Xml_generator: sanitize node content
Fixes #1698
2015-10-06 12:18:53 +02:00
Norman Feske
e590d90bf6 xml_generator: support appending of node content
The new 'Xml_generator::append' method can be used to append strings
into the body of an XML node.
2015-10-06 12:18:53 +02:00
Norman Feske
a80d944944 os: add Xml_attribute::value(String<N> *out)
This overload of the value member eases the retrieval of Genode::String
objects from XML attributes. So we won't need to deal with C-style
character buffers anymore.
2015-10-06 12:18:53 +02:00
Norman Feske
c8ec7b6ffb os: add print_lines utility
The code originates from the report_rom server. This patch makes the
code easy to reuse in other components.
2015-10-06 12:18:52 +02:00
Norman Feske
32a227ce77 os: Add == and != operators to Genode::Color 2015-10-06 12:18:52 +02:00
Norman Feske
dce6e14e3e os: generalize Session_label, Session_policy
The utilities in os/session_policy.h used to be tailored for the
matching of session arguments against a server-side policy
configuration. However, the policy-matching part is useful in other
situations, too. This patch removes the tight coupling with the
session-argument parsing (via Arg_string) and the hard-wired use of
'Genode::config()'.

To make the utilities more versatile, the 'Session_label' has become a
'Genode::String' (at the time when we originally introduced the
'Session_label', there was no 'Genode::String'). The parsing of the
session arguments happens in the constructor of this special 'String'.
The constructor of 'Session_policy' now takes a 'Genode::String' as
argument. So it can be used with the 'Session_label' but also with other
'String' types. Furthermore, the implicit use of 'Genode::config()' can
be overridden by explicitly specifying the config node as an argument.
2015-10-06 12:18:52 +02:00
Emery Hemingway
1779a0511b vfs: add new error codes
The codes are OPEN_ERR_NAME_TOO_LONG, OPEN_ERR_NO_SPACE, and
FTRUNCATE_ERR_NO_SPACE.

Issue #1693
2015-10-06 12:18:51 +02:00
Norman Feske
20f961cbd8 cli_monitor, launcher: handle exiting subsystems
Until now, the CLI monitor and the laucher allowed the user to explitly
kill subsystems but both used to ignore gracefully exiting subsystems.
It was the user's job to remove the remains of those subsystems. The
patch takes the burden of manually killing exited subsystems from the
user.

Fixes #1685
2015-09-30 15:48:12 +02:00
Stefan Kalkowski
ccb968ff7d safeguard the synchronized allocator template
* Move the Synced_interface from os -> base
* Align the naming of "synchronized" helpers to "Synced_*"
* Move Synced_range_allocator to core's private headers
* Remove the raw() and lock() members from Synced_allocator and
  Synced_range_allocator, and re-use the Synced_interface for them
* Make core's Mapped_mem_allocator a friend class of Synced_range_allocator
  to enable the needed "unsafe" access of its physical and virtual allocators

Fix #1697
2015-09-30 12:20:39 +02:00
Christian Helmuth
24b1f269be Remove Packet_ref from File_system::Packet_descriptor
The intention of Packet_ref was to allow clients to place opaque
references into the packet descriptor itself, which could be observed on
packet completion. Currently no component in our sources uses this
feature and beyond that it is questionable if it should be used at all:
If the server tampers with the ref the client may easily be confused
into observing an incorrect or invalid context. It seems better to
remove the opaque context from the descriptor and leave the actual
implementation to the client and its needs.
2015-09-30 12:20:37 +02:00
Norman Feske
0f052357ef init: propagate exit conditions of children
This patch extends the configuration concept of init with an additional
sub node for the <start> node:

<start name="noux">
  <exit propagate="yes"/>
  ...
</start>

If the 'propagate' attribute is set to "yes", the exit of the respective
child will appear to init's parent as the exit of the entire init
subsystem.

Fixes #1686
2015-09-30 12:20:36 +02:00
Emery Hemingway
7ce19216f4 VFS: symlink file system
add symlinks to a VFS tree with <symlink name="..." target="..."/>

Issue #1648
Fixes #1653
2015-09-30 12:20:36 +02:00
Emery Hemingway
4a5b7be4e7 TAR VFS: dereference hard links when opening files
Fixes #1636
Issue #1653
2015-09-30 12:20:35 +02:00
Stefan Kalkowski
ed52d5a211 Introduce 'spec' subdirectories to outline aspects
Instead of holding SPEC-variable dependent files and directories inline
within the repository structure, move them into 'spec' subdirectories
at the corresponding levels, e.g.:

  repos/base/include/spec
  repos/base/mk/spec
  repos/base/lib/mk/spec
  repos/base/src/core/spec
  ...

Moreover, this commit removes the 'platform' directories. That term was
used in an overloaded sense. All SPEC-relative 'platform' directories are
now named 'spec'. Other files, like for instance those related to the
kernel/architecture specific startup library, where moved from 'platform'
directories to explicit, more meaningful places like e.g.: 'src/lib/startup'.

Fix #1673
2015-09-16 13:58:50 +02:00
Stefan Kalkowski
acc46f70b7 codezero: remove support from Genode (fix #1668) 2015-09-09 15:14:29 +02:00
Norman Feske
9402261dda os: Add Handle_registry::has_handle
Issue #1649
2015-08-21 11:00:58 +02:00
Josef Söntgen
a6c5716796 os: add invalidate_all packets to Audio_out
When a stream was stopped it may still contain valid packets that
will be played automatically when the stream is started again. The
invalidate_all() method may be called after stopping the stream to
prevent this.

Issue #1647.
2015-08-21 11:00:57 +02:00
Norman Feske
26524edbf4 alarm: reposition reprogrammed alarms in queue
The alarm library failed to handle the case properly where an already
scheduled alarm gets rescheduled before it triggered. Even though the
attempt to reschedule the alarm (twice insertion into alarm queue) was
detected, this condition resulted in the mere modification of the
alarm's parameters while keeping the alarm's queue position unchanged.
This, in turn, may violate the invariant that all enqueued alarm objects
are strictly ordered by their deadlines. The patch handles the case by
dequeuing the alarm object before reinserting it into the queue at the
right position.

Fixes #1646
2015-08-21 11:00:57 +02:00
Josef Söntgen
61f5ca1e4d os: add Audio_in session for recording audio
In line with the Audio_out session a Audio_in session is used to
record audio frames. Like in the Audio_out session shared memory
in form of the Audio_in::Stream is used to transport the frames
from the server to the client. These frames consist of single
channel (mono) samples. An Audio_in::Packet always contains a full
period of frames.

A Audio_in server captures frames and puts them into the
Audio_in::Stream. To do so the server allocates a Audio_in::Packet
from the packet queue embedded in the Audio_in::Stream. If the queue
is already full, the server will override packets and notify the
client by submitting the 'overrun' signal. The client has to cope
with this situation, e.g., by saving packets more frequently.

A client will also receive a 'progress' signal from the server when
a new Audio_in::Packet was submitted to the packet queue.

Fixes #1644.
2015-08-21 10:59:46 +02:00
Josef Söntgen
81599f89ea os: decrease Audio::PERIOD to lower latency
To archive lower latency the length of a period was reduced from
2048 (~46ms) to 512 (~11.6ms) samples.

It should be noted that this change probably breaks audio in Qemu on
most systems.

Issue #1644.
2015-08-21 10:59:45 +02:00
Josef Söntgen
2843a70c0e os: add missing header in Audio_out session header
Include <base/signal.h> directly in the session header to make it
self contained rather than depend on including it outside.

Issue #1644.
2015-08-21 10:59:45 +02:00
Norman Feske
1feaf75605 ram_fs: coding style, license headers
Issue #1635
2015-08-21 10:58:58 +02:00
Emery Hemingway
f996697fd5 VFS: local ram_fs instances
Move FS Node implementations from server/ram_fs to include/ram_fs.
Support embedded ram_fs instances in VFS configurations using <ram/>.
Add 'no space' handling to VFS symlink ops.

Fixes #1635
2015-08-21 10:58:40 +02:00
Emery Hemingway
2f1db06deb rump_fs/fuse_fs/lx_fs/ram_fs: symlink fixup
Allow symlinks to be passed to the read and write file system utilities.

Disallow writes to symlinks with offsets in file system servers, this is
to ensure that writing the target of a symlink is an atomic operation.

Fixes #1604
2015-07-21 09:40:19 +02:00
Emery Hemingway
c72c9924d3 init: prios shall not exceed the lowest prio level
Fixes #1570
2015-07-21 09:29:03 +02:00