Commit Graph

800 Commits

Author SHA1 Message Date
Josef Söntgen
e37792ce94 gpu: introduce information dataspace
The current info implementation (as RPC) is limited in a few ways:

  * The amount of data that may be transferred is constrained by the
    underlying base platform
  * Most information never changes during run time but is copied
    nonetheless
  * The information differs depending on the used GPU device and
    in its current implementation only contains Intel GPU specific
    details

With this commit the 'info' RPC call is replaced with the
'info_dataspace' call that transfers the capability for the dataspace
containing the information only. This is complemented by a client
local 'attached_info' call that allows for getting typed access to
the information. The layout of the information is moved to its own
and GPU-specific header file, e.g., 'gpu/info_intel.h'

Issue #4265.
2021-10-13 14:46:52 +02:00
Josef Söntgen
cfb170c719 gpu: move exec sequence number to Gpu namespace
Moving the type definition removes the aritifial linkage to the Gpu
information structure.

Issue #4265.
2021-10-13 14:46:52 +02:00
Josef Söntgen
3b40790e02 gpu: use Buffer_id to identify buffers
Rather than using the dataspace capability directly, let the client
choose its own local identifier that is linked to the underlying
capability.

Fixes #4265.
2021-10-13 14:46:52 +02:00
Piotr Tworek
b7f66626c2 virtio: Make avail and used ring pointers volatile
The contents of those descriptor rings can be modified by the device.
Mark them as volatile so the compiler does not make any assumptions
about them.

Issue #4264
2021-10-13 14:46:51 +02:00
Alexander Boettcher
cc2363d421 gpu/intel: report slice, subslice, eu via gpu info
used by libdrm & mesa-21 clients

issue #4254
2021-08-30 15:00:37 +02:00
Johannes Schlatow
b5dd1dd01b trace: consolidate Trace_buffer implementations
Both, trace_logger and vfs_trace had their own trace_buffer.h. This
commit consolidates the existing implementations and provides the
resulting trace_buffer.h at 'include/trace/'. It thereby becomes part of
the trace api archive.

genodelabs/genode#4244
2021-08-30 15:00:37 +02:00
Christian Prochaska
149bd999f3 vfs_oss: support more commands for VirtualBox 6 and sndio
Fixes #4252
2021-08-30 15:00:36 +02:00
Martin Stein
812fdec27c nic_router: propagate dns domain name via dhcp
With this commit, the NIC router DHCP client reads out the first DNS domain
name (DHCP option 15) if any from a DHCP reply that generates an IPv4 config
for a domain and stores the name together with the IPv4 config for that domain.
DNS domain names are reported via the new report tag '<dns-domain>' if the
'config' attribute in the config tag '<report>' is set.

Furthermore, the NIC router DHCP server becomes able to obtain a DNS domain
name from another domain that has a DHCP client dynamically (given the config
attribute 'dns_config_from' is set and no static DNS config is given) or
statically from its configuration (new config tag '<dns-domain>') and propagate
this name with DHCP replies (DHCP option 15).

The 'nic_router_dhcp_*' tests are adapted to test the new feautures.

The commit also gets rid of some mirrored files in
'test/nic_router_dhcp/manager'.

Fixes #4246
2021-08-18 15:06:12 +02:00
Martin Stein
9e6f7988c2 nic_router: list dns servers in one dhcp option 6
The NIC router DHCP server used to add an extra option 6 field to DHCP replies
for each DNS server address. This conflicts with RFC #2132 section 3.8 which
states that the addresses should be listed within one option 6 field without
delimiter. The discrepancy is fixed by this commit.

Ref #4242
2021-08-18 15:06:12 +02:00
Martin Stein
b0e558f486 net/icmp: cast from integer to 'Code' enum
Add a function to the header for doing this cast.

Ref #4236
2021-08-18 15:06:12 +02:00
Josef Söntgen
4b653fbac1 gpu/intel: handle double insertion in PPGTT
As the PPGTT is populated by the client, the client has to account for
guard pages and so forth.

Issue #4148 #4233
2021-08-18 15:06:11 +02:00
Alexander Boettcher
b3147050cc gpu/intel: add support to report finished batches
- extend gpu multiplexer to report last completed execution buffer
- on client side lookup finished buffers and disable busy state

issue #4233
2021-08-18 15:06:11 +02:00
Martin Stein
9384e075cb ipv4: get rid of C++ bitsets, add DF/MF flags
The former declaration of the IPv4 packet did not only use the questionable
tool of implementation-defined C++ bitsets but also lacked access to flags
"don't fragment" (DF) and "more fragments" (MF). This commit replaces the
C++ bitsets by using the register framework and introduces accessors for the
missing flags.

Ref #4236
2021-07-28 11:27:04 +02:00
Johannes Schlatow
2afb7c5567 nic_router: fix Tcp_packet header fields
data_offset and NS flag were incorrectly read due to missing endianess
conversion. Also fix name of CWR flag.

Fixes genodelabs/genode#4227

genodelabs/genode#4227
2021-07-28 11:27:04 +02:00
Stefan Kalkowski
ee045a68cc os: introduce C-API to Genode services
This commit introduces a C-API to the Uplink session, as well as to
serve as a Block service. It can be used by drivers ported from
C-only projects, like the Linux kernel, or BSD kernels for instance.

Fix #4226
2021-07-28 11:27:04 +02:00
Martin Stein
16c4aacf34 vfs/dir_fs: allow opening empty dirs
Adapts Dir_file_system::open_composite_dirs in a way that it returns "success"
when the leaf node of the path is an empty directory but "lookup failed", as
usual, if one of the other directories on the way to the leaf node is empty.

I couldn't find a technical reason why we used to return "lookup failed" when
only the leaf node was empty.

The commit also adds a test for en empty root directory and empty
sub-directories to the fs_query run script.

Fixes #4198
2021-06-25 11:41:45 +02:00
Johannes Schlatow
026b117a63 separate sandbox api from os
genodelabs/genode#4191
2021-06-25 11:41:45 +02:00
Sebastian Sumpf
eabda8907f usb_host: add support to flush EP transfers
This causes all pending transfers of a EP to be canceled and in turn to
be acked by the raw session.

issue #4196
2021-06-25 11:41:44 +02:00
Stefan Kalkowski
ed7d6c74f4 i2c: extend API to support transactions
Introduces the notion of a transaction that consists of one or more
messages. Whereby a message has a read or write direction and consists
of one or more bytes.

Issue #4170
Fixes #4169
2021-05-28 14:16:45 +02:00
Norman Feske
100583e262 os/vfs.h: New_file utility
This patch moves the utility from the app/text_area to os/vfs.h to make
it easier to use by other components. By hosting the 'New_file' as a
friend alongside the 'Directory', we can now pass a 'Directory' as
constructor argument, which is consistent with other utilities such as
'File_content'.

As a further improvement, the new version supports the implicit creation
of the directory hierarchy leading to the new file.

Issue #4032
2021-05-28 14:15:27 +02:00
Norman Feske
57fbd2b658 os/vfs.h: Directory::create_sub_directory
This method can be used to create a directory hierarchy within a
'Directory'.

Issue #4032
2021-05-28 14:15:27 +02:00
Stefan Kalkowski
516601b7ba os: add Platform::Device::sigh_omit_initial_signal
Add possibility to register an interrupt handler without triggering
an initial spurious interrupt for ported device driver code.

Fixes #4154
2021-05-28 14:15:27 +02:00
Johannes Schlatow
db97af8dec vfs: fix read of large files in fs_file_systems
For fs_file_systems, reads are limited to the size of the packets from the
File_system session. Hence, we cannot read the large files in one go.

This fix is particularly helpful for fonts_fs, as it enables including font
files from a File_system.

genodelabs/genode#4135
2021-05-28 14:15:27 +02:00
Martin Stein
49184fb938 net: circumvent stringop-overflow error
With the update to GCC 10, the compiler stopped with an error when compiling
places where a MAC address is copied from outside into a packed object using
the Net::Netaddress::copy method (e.g. in
Net::Arp_packet::dst_mac(Mac_address)):

! error: writing 6 bytes into a region of size 4 [-Werror=stringop-overflow=]

While trying to find a clean solution for this error, I found posts on
gcc.gnu.org and github that stated that the size calculations that cause these
errors are incorrect. Indeed, I could verify that the actual size of the two
regions was static and exactly the same in places were the error occured.

Furthermore, I couldn't find a way of making it more clear to the compiler
that the sizes are the same. By accident, we found that using the address of
the first element of the array that forms the second region instead of the
array address itself, somehow circumvents the error.

Fixes #4109
2021-05-05 11:35:31 +02:00
Martin Stein
52e8c95321 net: fix packed-conversion compiler warning
With the update to GCC 10 the compiler used to warn when using the internet
checksum functions on packet classes (like in
Net::Ipv4_packet::update_checksum):

warning: converting a packed ‘Net::[PACKET_CLASS]’ pointer
         (alignment 1) to a ‘const uint16_t’ {aka ‘const short
         unsigned int’} pointer (alignment 2) may result in an
         unaligned pointer value

Apparently, the 'packed' attribute normally used on packet classes sets the
alignment of the packet class to 1. However, for the purpose of the
internet-checksum functions, we can assume that the packet data has no
alignment. This is expressed by casting the packet-object pointer to a pointer
of the new packed helper struct 'Packed_uint16' that contains only a single
uint16_t member before handing it over to the checksum function (instead of
casting it to a uint16_t pointer).

Ref #4109
2021-05-05 11:35:31 +02:00
Johannes Schlatow
1c49da8ce4 terminal: don't overwrite last column until eol
Introduce a new _overflowed state variable to indicate whether the
horizontal boundary was reached already and to omit subsequent character
output.

This state is necessary to maintain a valid cursor position at all
times. The _overflowed attribute is reset once the cursor is moved into
a valid position again.

To harmonise the bounds checking for _cursor_pos modifications, the
`constrain()` method was added.

Fixes genodelabs/genode#4093

Also fixes a bug in `vpa()` and `vpb()` which moved the cursor
horizontally instead of vertically.
2021-05-05 11:35:27 +02:00
Stefan Kalkowski
421d2bed40 platform driver: make device info XML optional
* The device XML information dataspace is only provided,
  when the client's policy states `info="yes"`
* The device XM information gets changed to include the
  physical resource names (I/O memory and IRQ addresses)
  instead of virtual ids and page offset

Fix #4077
2021-05-05 11:31:16 +02:00
Norman Feske
6caa74a18e Remove os/slave.h API
Fixes #3754
2021-05-05 11:21:43 +02:00
Norman Feske
ace7c9172b Disambiguate Mmio::local_addr
This is a follow-up fix for "Streamline platform-device API on ARM".
There is an ambiguity of the 'local_addr' method between the inherited
'Attached_dataspace' and the local declaration, which results in the
double application of the sub-page Range::start.

Issue #4075
2021-05-05 11:21:43 +02:00
Josef Söntgen
ddf6a0c276 os: add invalid path exception to Path_base
In case the path is invalid during import raise the 'Path_invalid'
exception.

Issue #4088
2021-05-05 11:21:42 +02:00
Norman Feske
dc8c899c1d Streamline platform-device API on ARM
This API rework eases the access to memory-mapped I/O registers and
interrupts when using the platform driver. It introduces the notions of

- Platform::Device       - one device obtained from a platform session
- Platform::Device::Mmio - locally-mapped MMIO registers of a device
- Platform::Device::Irq  - interface for receiving device interrupts

The patch touches several drivers. Some drivers would require a
significant structural change to adopt the new API (e.g., net/virtio,
dde_linux drivers, imx gpio). In these cases, the patch adds
compatibility shims meant to be temporary. In other cases (e.g., imx
i2c), the adaptation was simple enough to carry through.

Fixes #4075
2021-04-20 12:10:58 +02:00
Stefan Kalkowski
d1cf9c86b8 os: introduce device type in platform driver
* Move "compatible" property value to "type" attribute
* Turn device_by_property helper in Platform::Connection into device_by_type

Fix #4074
2021-04-20 12:10:58 +02:00
Norman Feske
0339318572 platform_session: cache arg for alloc_dma_buffer
This patch extends the 'Platform_session::alloc_dma_buffer' interface
with a 'Cache' argument that corresponds to the argument accepted by
'Ram_allocator::alloc', which is used by the platform driver under the
hood.

Since the x86 platform driver used to be hardwired to allocate DMA
buffers as UNCACHED, I adjusted all drivers by specifying the UNCACHED
argument. Right now, this is needed as a hint for core to steer the
allocation of I/O page tables. Once we eliminate the need for such hints
(by introducing an explicit 'Region_map::attach_dma' operation), we can
revisit the drivers individually because cached DMA buffers should
generally be fine on the x86 architecture.

Issue #2243
2021-04-20 12:10:57 +02:00
Norman Feske
53e44f8bfd x86/platform_session: import Genode namespace
This change avoids many repetetive Genode:: prefixes, making the code
easier to read. The patch also includes a few consistency fixes
regarding include guards and file headers. It also renames
Platform_device::String to Platform_device::Device:name.

Issue #2243
2021-04-20 12:10:57 +02:00
Norman Feske
468e7a825c base/cache.h: rename Cache_attribute to Cache
The short name is better because the type will become prominently
visible at the API.

Issue #2243
2021-04-20 12:10:31 +02:00
Norman Feske
3ed8df9089 x86/platform_drv: add Platform::Session::dma_addr
This patch adds the designated alternative to Dataspace::phys_addr to
the platform-session interface. Under the hood, the platform driver
still calls Dataspace::phys_addr but it should eventuelly become the
only caller before we can abolish this function.

Issue #2243
2021-04-20 12:03:05 +02:00
Norman Feske
97a9ad114c platform_session: bus_addr_dma_buffer to dma_addr
Issue #2243
2021-04-20 12:03:04 +02:00
Norman Feske
f925fef17b base: Refine Range_allocator::alloc_aligned
This patch changes the 'alloc_aligned' interface as follows:

- The former 'from' and 'to' arguments are replaced by a single
  'range' argument.

- The distinction of the use cases of regular allocations vs.
  address-constrained allocations is now overed by a dedicated
  overload instead of relying on a default argument.

- The 'align' argument has been changed from 'int' to 'unsigned'
  to be better compatible with 'addr_t' and 'size_t'.

Fixes #4067
2021-04-20 12:03:04 +02:00
Jean-Adrien DOMAGE
32169cd137 add I2c driver for imx8q based platform
This commit introduces a new i2c driver for the imx8q_evk based platform.

Fixes #4052
2021-03-29 13:45:24 +02:00
Norman Feske
8c7d34ff21 rpi_platform_drv: remove placement new operator
Issue #2106
2021-03-12 12:01:38 +01:00
Sid Hussmann
3ff0efd627 vfs/pipe: add fifo feature to pipe plugin
The vfs pipe plugin can now be used as named pipe which anables data
transfer via file handles from one component to another. E.g. if one
would like to send data from component A to stdin of a libc component B,
one can do so by simply writing to that fifo file.

Issue #3583
2021-02-23 12:07:16 +01:00
Josef Söntgen
a6f0b05834 usb_host: properly handle ISOC read requests
* Update the 'packet_size' information with the actual length for
  each isoc frame to be able to handle short reads at the client side.

* Copy the whole transfer buffer because the host controller stores
  the data at the original offsets, i.e., the buffer is not densely
  packed.

Fixes #4018.
2021-02-23 12:02:44 +01:00
Christian Prochaska
2670ae399b usb_host_drv: improve error handling
Fixes #4005
2021-02-23 12:02:42 +01:00
Martin Stein
cf72d1aac3 os: introduce new "Uplink" session
Adds new Uplink session interface, the corresponding client side (Client,
Connection), and the corresponding API archives. An Uplink session is almost
the same as a NIC session with the difference that the roles of the end points
are swapped. An Uplink client is the one that provides a network interface
(for instance, a NIC driver) whereas an Uplink server is the one that uses
that network interface (for instance, a networking stack).

Therefore, in contrast to the NIC session, MAC address and link state come from
the Uplink client. The link state is reflected through the lifetime of an
Uplink session: The client requests the session only when the link state is
"UP" and closes it whenever the link state becomes "DOWN" again. The MAC
address is transmitted from the Uplink client to the Uplink server as an
argument of the session request.

Ref #3961
2021-01-25 13:48:09 +01:00
Norman Feske
a0fb944721 Propagate session diag flag to core
This commit restores the diag feature for selecting diagnostic output of
services provided by core. This feature became unavailable with commit
"base: remove dependency from deprecated APIs", which hard-wired the
diag flag for core services to false.

To control this feature, three possible policies can be expressed in a
routing target of init's configuration:

* Forcing silence by specifying 'diag="no"'
* Enabling diagnostics by specifying 'diag="yes"'
* Forwarding the preference of the client by omitting the 'diag'
  attribute

Fixes #3962
2020-12-09 14:02:11 +01:00
Sebastian Sumpf
36eeab6df2 dde_linux: usb support extra data and zero config
- Vendor devices add addtional data to the config descriptor, read and
  added to the usb session
- allow '0' configuration within the usb session

issue #3822
2020-12-09 14:02:11 +01:00
Martin Stein
e14b58a82c net/dhcp.h: more specific include guards
Ref #3952
2020-12-09 14:02:10 +01:00
Martin Stein
9b164d20fd vfs directory service: name enum Open_mode
Fixes #3936
2020-11-23 12:02:59 +01:00
Piotr Tworek
7fbb245710 os: add VirtIO device helper classes.
To simplify writing native VirtIO drivers for Genode add helper classes
representing VirtIO device and queue. The queue implementation should
be platform independant. The device abstraction however is closely tied
to the VirtIO transport being used (PCI/MMIO). Both PCI and MMIO
implementations expose the same public API so the actual driver logic
should be the same regardless of which transport is used.

Its also important to note that the PCI version of Virtio::Device
currently does not support MSI-X interrupts. Unfortunately my kowledge
about PCI bus is very limited and my main area of interest was to get
VirtIO drivers working on virt_qemu ARM/Aarch64 platform. As such all
the VirtIO drivers I plan to submit will work with PCI bus, but might
not use some extended capabilities.

Ref #3825
2020-10-09 13:35:57 +02:00
Sebastian Sumpf
c79687f5f4 gpio: introduce Pin and '_with_gpio'
- make GPIO server more robust on imx by not throwing exceptions for
  unknown pins, use '_with_gpio' instead
- use 'Gpio::Pin' data type instead of POD 'unsigned'

issue #3900
2020-10-09 13:35:56 +02:00
Christian Helmuth
2eb8c5e21a net: move ascii_to() into Net namespace
The combination of Net::Mac_address and
Genode::ascii_to(Net::Mac_address) required shaky quirks in several
places because GCC is not able to resolve the ascii_to overload if
base/xml_node.h was included to early. The current solution moves the
several ascii_to overloads "closer" to the Net types by putting them
into the Net namespace, where GCC reliably picks them up.

Hence, co-locating the ascii_to() utility with the overload type in the
same scope/namespace is good practice.

This patch removes the now obsolete <nic/xml_node.h> header file.
2020-09-17 10:13:22 +02:00
Norman Feske
f5dc71ed35 os: remove obsolete single_session_service.h 2020-09-17 10:13:20 +02:00
Norman Feske
3031fd2a7d os/vfs.h: const 'Directory' arg for 'Watch_handler'
The watch mechanism should not require a reference to a mutable
directory.
2020-09-09 16:57:34 +02:00
Stefan Kalkowski
224f5907b2 os: add platform driver for i.MX 8M Quad SoC
The new platform driver supports clock and power-domain settings per device.
IOMUX constroller settings are not part of the driver yet.

Fix #3863
2020-08-25 11:50:12 +02:00
Norman Feske
6c4ce86a34 event_session: make Session_client::Batch abstract
This way, there can exist multiple implementations of the interface such
as event filters.

Issue #3812
2020-08-25 11:49:43 +02:00
Alexander Boettcher
d1be1281bc os: use whole memory in Packet_allocator 2020-08-25 11:42:36 +02:00
Christian Helmuth
5122917d62 os: declare Path::max_len() const 2020-07-30 08:49:23 +02:00
Piotr Tworek
d8539af412 platform_session: Add missing include.
The code uses Genode::Attached_dataspace but fails to include header
defining this type.

Fixes #3824
2020-07-30 08:49:23 +02:00
Alexander Boettcher
41380ff769 base: remove Cancelable_lock
- base/cancelable_lock.h becomes base/lock.h
- all members become private within base/lock.h
- solely Mutex and Blockade are friends to use base/lock.h

Fixes #3819
2020-07-30 08:49:23 +02:00
Norman Feske
443d3c98dd Event session interface
Issue #3812
2020-07-13 11:33:13 +02:00
Norman Feske
3d1d1b439d Capture session interface
Issue #3812
2020-07-13 11:33:13 +02:00
Norman Feske
a7d170adda os: add blit/painter.h
This utility eases the application of the 'blit' function when using the
'Texture' and 'Surface' types.
2020-07-13 11:33:13 +02:00
Norman Feske
ef741ef80d Change pixel format to 32 bits per pixel
Until now, Genode's framebuffer session interface was based on the
RGB565 pixel format. This patch changes the pixel format to 32-bit
XRGB where the X part is ignored. It adapts all graphical applications
and device drivers accordingly.

The patch also adjusts the users of the drivers_interactive packages,
assigning 64 MiB RAM and 1500 caps to the drivers subsystem, which is
sufficient for covering high resolutions at 32 bits per pixel and to
accommodate multi-component USB HID input stacks.

Fixes #3784
2020-06-29 14:22:29 +02:00
Norman Feske
5d40c0c1ce Rename 'Nitpicker' namespace to 'Gui'
Issue #3778
2020-06-22 09:39:40 +02:00
Norman Feske
98f39c698f Rename "Nitpicker" service name to "Gui"
Issue #3778
2020-06-22 09:39:39 +02:00
Norman Feske
c6eda9bd80 Rename include/nitpicker_session to gui_session
This patch also renames the depot api archive accordingly.

Issue #3778
2020-06-22 09:39:39 +02:00
Stefan Kalkowski
1a80f166c5 os: introduce common platform driver for ARM
Ref #3299
2020-05-27 11:56:46 +02:00
Norman Feske
ab8ef5750d doc: tweaks for updated Genode Foundations book 2020-05-27 11:56:46 +02:00
Norman Feske
b078224753 Replace Genode::strncpy by Genode::copy_cstring
- Since Genode::strncpy is not 100% compatible with the POSIX
  strncpy function, better use a distinct name.

- Remove bogus return value from the function, easing the potential
  enforcement of mandatory return-value checks later.

Fixes #3752
2020-05-27 11:56:45 +02:00
Norman Feske
be65c4acd2 Avoid use of deprecated Xml_node methods
Issue #3755
2020-05-18 10:16:14 +02:00
Norman Feske
bbc21cf063 util/bit_array.h: remove use of memset and memcpy
This makes the code less dependent on functions considered unsafe.

Fixes #3748
2020-05-05 13:30:15 +02:00
Stefan Kalkowski
0e49336b96 Retire Exynos 5 support (fix #3725) 2020-04-17 12:53:57 +02:00
Tomasz Gajewski
1d9a2dce94 trace: extend policy with log_output
Issue #3714
2020-04-17 12:47:19 +02:00
Roman Iten
12ea494477 vfs/File_content: fix end condition in for_each_line
Fixes #3729
2020-04-17 12:45:10 +02:00
Alexander Boettcher
22d71d5a8b os: use Mutex/Blockade
Issue #3612
2020-04-17 12:40:12 +02:00
Norman Feske
85a1f91f59 Sanitize Framebuffer::Mode member access
Fixes #3719
2020-04-17 12:40:12 +02:00
Norman Feske
c2cf0ae8c6 os/vfs.h: fix possible nullptr dereference
Fixes #3694
2020-03-26 11:38:56 +01:00
Norman Feske
2912096f6e vfs: distinguish NO_PERM from NO_ENTRY in unlink
This patch changes the 'Single_file_system' to return NO_PERM only if
the to-be-unlinked file corresponds to the single file. This way, a
<rom> co-mounted with a <ram> file-system does not stand in the way of
unlinking files from the <ram>. The concrete symptom occurred the
following scenario:

  <vfs>
    <dir name="home">
      <ram/>
      <rom name="..."/>
    </dir>
  </vfs>

The following sequence of commands wrongly resulted in "Operation not
permitted":

 $ mkdir -p /home/a/b/c
 $ rm -f /home/a/b/c/d

In this case, rm should not fail (unlink should return ENOENT)

Fixes #3690
2020-03-26 11:38:55 +01:00
Norman Feske
7118ad494c os/vfs.h: add Directory::Entry::rwx accessor 2020-02-27 14:46:58 +01:00
Josef Söntgen
c53be5a3fb os: omit size check on payloadless Block packets
The check is already performed in 'packet_valid' where the conditions
for payloadless packets are already considered.

Fixes #3660.
2020-02-27 14:46:57 +01:00
Josef Söntgen
6addd6cf1e os: fix Node_rwx::rwx
Fixes #3658.
2020-02-27 14:46:57 +01:00
Norman Feske
9b0fbf000e sandbox: support for local state-report handling
Fixes #3647
2020-02-20 12:11:22 +01:00
Norman Feske
46c5a90ba1 nitpicker_gfx: Text_painter::Font::index_at_xpos
This method is useful for finding the character under a mouse position.
2020-02-20 12:08:16 +01:00
Norman Feske
52e582132f os/vfs.h: handle corner case in join function
When specifying "/" or "" as rel_path to the 'Directory' constructor,
the constructed directory should refer to the same directory. The
implementation of the join utility did not consider this corner case. It
occurred during the attempt to use fs_query with "/" given as path.

This patch also adds a Directory::Entry::dir accessor that returns true
if the entry is a directory.

Fixes #3630
2020-02-20 12:08:16 +01:00
Stefan Kalkowski
22498e0b09 os: add backtrace utility for arm_64
Fix #3621
2020-02-04 16:10:22 +01:00
Norman Feske
c67a0d3dd8 os/dynamic_rom_session.h: support Xml_generator
This patch adds a special variant of a 'Content_producer' called
'Xml_producer', which allows the direct use of an 'Xml_generator'
for generating the ROM-module content.
2020-02-04 15:51:09 +01:00
Norman Feske
78c0e5f6b6 New sandbox library extracted from init component
This patch extracts the child-management functionality from the init
component into a new library called "sandbox". The library API is
located at 'os/include/os/sandbox.h'.

The sandbox API allows for the interaction of the component with the
sandboxed children by providing locally implemented services. This
mechanism is illustrated by the new test at os/src/test/sandbox.

Issue #3601
2020-02-04 15:51:09 +01:00
Norman Feske
f82e7df0ba os/buffered_xml.h: support for generating XML
This patch extends the 'Buffered_xml' utility with a new constructor
that fills the buffer with the output of an 'Xml_generator'. It thereby
presents an easy way to generate XML to be consumed locally.

The patch also add a deprecation mark to the original 'xml' accessor
because copying 'Xml_node' objects (here as return value) is dangerous.
The new 'with_xml_node' method should instead be used to access the XML
content stored in the buffer.

Fixes #3602
2020-02-04 15:51:09 +01:00
Christian Helmuth
9a35743df6 Mark packet-stream descriptor head/tail as volatile
`volatile` effectively prevents instruction reordering by the compiler
and fixes an issue with -O3 compiled components.

Note, this commit does not address further arguments regarding memory
barriers and volatile voiced in issue #693.

Issue #693
2019-12-20 14:34:22 +01:00
Norman Feske
f85ec313de os/vfs.h: handle zero-sized files
The 'File_content' class failed to consider zero-sized files.

Fixes #3557
2019-12-19 16:59:03 +01:00
Norman Feske
3ac970ac1d Streamline Timestamp::INVALID values
This is a follow-up patch for issue #1784 that solves two
inconsistencies.

- The Vfs::Timestamp::INVALID matches File_system::Timestamp::INVALID
- The Noux libc plugin tests for Timestamp::INVALID instead of a
  positive value.

The patch fixes the mtime info as shown in directory listings in
Sculpt's inspect window.
2019-11-21 14:26:27 +01:00
Emery Hemingway
c51b4b5742 New VFS plugin for emulating POSIX pipes
Add a new plugin for creating pipes between pairs of VFS handles. It is
intended to replace the libc_pipe plugin, one of the last remaining libc
plugins.

In contrast to the libc_pipe plugin, this plugin defers cross-handle
notification until I/O signal handling rather than block and unblock
readers using a semaphore. This is a performance regression in the case
of multiple threads blocking on a pipe, but shall be an intermediate
mechanism pending renovations within the libc VFS and threading layers.
As a side effect, threads blocked on a pipe might not be resumed until
the main thread suspends and dispatches I/O signals.

The "test-libc_pipe" test has been adjusted to use the VFS pipe plugin
and tests both local pipes and pipes hosted remotely in the VFS server.

Merge adaptations (such as EOF handling, adjustment to VFS/libc
interface changes) by Norman Feske.

Fix #2303
2019-11-19 14:54:13 +01:00
Norman Feske
d7b1a89087 file-system session: use same dirent size as VFS
This change allows for the conversion of directory entries in place
(i.e., in the VFS server) and anticipates the potential future merge of
both types into one.

Issue #3547
2019-11-19 14:54:13 +01:00
Martin Stein
b541a0d448 smbios.h: move to os/include/smbios
Fixes #3489
2019-11-19 14:54:12 +01:00
Josef Söntgen
dbecceec09 expanding_reporter: configure initial buffer size
Fixes #3543.
2019-11-19 14:44:02 +01:00
Norman Feske
7549189f88 vfs: watch support for Readonly_value_file_system
This patch adds support for watch notifications for the
'Readonly_value_file_system', which is often used by VFS plugins to
implement pseudo files. It thereby enables VFS clients to respond to
VFS-plugin events (think of terminal resize) dynamically.

Fixes #3523
2019-11-19 14:42:23 +01:00
Martin Stein
60d37f690c packet_stream_*: fix missing dissolve on exception
When the construction of a member of Packet_stream_*::Rpc_object after
the _cap member threw an exception, the object was not dissolved from
the entrypoint although the Rpc_object vanished at this point. This was
because the call to 'manage()' happened in the initializer list (for the
_cap member instantiation). The destruction of the _cap member then did
not dissolve the object.

This first fix moves the call to 'manage()' into the constructor body
after the instantiation of all other members. A more sophisticated fix
would use some kind of 'Managed_object' life-time guard that manages an
object on construction and dissolves on destruction.

Ref #3525
2019-11-19 14:42:22 +01:00
Norman Feske
c85bc38802 Move include/gems/vfs.h to include/os/vfs.h
Fixes #3515
2019-11-19 14:23:56 +01:00
Norman Feske
5bb366513b Remove os/src/app/cli_monitor
Nowadays, we use standard command-line tools like vim to edit init
configurations dynamically, which alleviates the need for a custom CLI.
The CLI-monitor component was too limited for use cases like Sculpt
anyway.

The patch also removes the ancient (and untested for long time)
terminal_mux.run script, which used to be the only remaining user of the
CLI monitor.

Issue #3512
2019-11-19 14:23:56 +01:00
Norman Feske
5ab1505d43 file system: enhanced file status info
This patch extends the 'File_system::Status',
'File_system::Directory_entry', and the related 'Vfs' types with
the following additional information:

- Distinction between continuous and transactional files (Node_type)
  (issue #3507)
- Readable, writeable, and executable attributes (Node_rwx),
  replacing the former 'mode' bits
  (issue #3030)

The types 'Node_rwx', 'Node_type' are defined twice,
once for the VFS (vfs/types.h) and once for the 'File_system'
session (file_system_session/file_system_session.h).
Similarly, there is a direct correspondance between
'Vfs::Directory_service::Dirent' and 'File_system::Directory_entry'.

This duplication of types follows the existing pattern of keeping the
VFS and file-system session independent from each other.
2019-11-19 14:23:56 +01:00
Christian Helmuth
cc611834c9 input: repeat events require valid codepoints
Issue #3483
2019-11-19 14:23:54 +01:00
Josef Söntgen
9a82bbb54d vfs: add modification time member to directory_service
Issue #1784.
2019-11-19 14:17:30 +01:00
Josef Söntgen
2ec3aaf639 file_system_session: add modification time
* add modification_time member
* add WRITE_TIMESTAMP packet
2019-11-19 14:17:30 +01:00
Christian Helmuth
4491c070be input: fix Codepoint::INVALID in Press event
The Press event is actually a Press_char event with a default codepoint.
The default codepoint is now

  Codepoint { Codepoint::INVALID } /* value 0xfffe */

in contrast to

  Codepoint { Input::Event::INVALID } /* value 0 */

Issue #3483
2019-08-28 14:22:32 +02:00
Christian Helmuth
a97b8043b5 utf8: non-character U+fffe as invalid codepoint
Unicode non-characters [1] are guaranteed to never be used for a
character. The formerly used U+fffd however is a valid character - the
replacement character [2] correctly displayed by Qt5 as <?>.

[1] https://en.wikipedia.org/wiki/Universal_Character_Set_characters#Non-characters
[2] https://en.wikipedia.org/wiki/Specials_(Unicode_block)#Replacement_character

Issue #3483
2019-08-28 14:22:32 +02:00
Norman Feske
cc437a5eca Spelling fix in os/single_session_service.h 2019-08-21 13:35:52 +02:00
Martin Stein
cb6377355e sntp_client: report received transmit timestamp
For now in libports because it relies on contrib sources from musl doing
the time data conversion.

Ref #3448
Ref #3450
2019-08-21 12:37:02 +02:00
Josef Söntgen
ea2b330158 rtc: extended session with set-signal
A client may register a signal handler to be notified whenever the
RTC value was changed, i.e., a mis-configured clock was synchronized,
by calling 'set_sigh()'.

Issue #3450
2019-08-21 12:37:01 +02:00
Josef Söntgen
86cacd23bb rtc: add documentation comments
Issue #3450
2019-08-21 12:37:01 +02:00
Martin Stein
1e379cb3a9 drivers/acpi: provide plain SMBIOS table as report
Ref #3430
2019-08-13 12:02:03 +02:00
Josef Söntgen
91ce57848c rtc_session: make timestamp printable
Issue #3438.
2019-08-13 12:02:03 +02:00
Norman Feske
fc7b983a40 terminal: clipboard support
Fixes #2079
2019-07-09 08:58:38 +02:00
Christian Prochaska
f99a1d78bb os: fix 'CUU' terminal command
Decrement the y position to move the cursor up.

Fixes #3379
2019-05-29 10:20:52 +02:00
Norman Feske
405a9d2144 Refinements for updated "Genode Foundations" book
- Improve API descriptions
- Remove obsolete Xml_node::value method (fixes #3323)
- Follow coding style 'const char' -> 'char const'
- Avoid '>>' when nesting templates (limitation of parse_cxx)
2019-05-27 14:52:53 +02:00
Emery Hemingway
4caffd79db Ethernet multicast support at nic_bridge
Fix #3282
2019-05-27 14:46:53 +02:00
Christian Prochaska
2aeb1a70ea os: remove 'register' keyword from 'pixel_rgba.h'
Fixes #3331
2019-05-16 13:11:02 +02:00
Stefan Kalkowski
911f4ada0a os: make platform_drv package ready for ARM
* Make target binaries independent of board SPECS
* Name binaries of one architecture unambigously
* Extend include path to match board specifics
* Adapt run-scripts to use the right binary

Ref #2190
Ref #3180
2019-05-16 12:52:59 +02:00
Stefan Kalkowski
c767f6ccf1 os: explicit cache policy in Nic::Session_component
To enable the use of uncached DMA buffers as RX and TX communication
buffers in between driver (service) and client, introduce a cache
attribute in the constructor of Nic::Session_component

Ref #3291
2019-05-06 16:15:26 +02:00
Norman Feske
784206c85c block_session: new client-side API
This patch equips the 'Block::Connection' with a framework API for the
implementation of robust block-session clients that perform block I/O in
an asynchronous fashion.

An application-defined 'JOB' type, inherited from 'Connection::Job',
encapsulates the application's context information associated with a
block operation.

The lifecycle of the jobs is implemented by the 'Connection' and driven
by the application's invokation of 'Connection::update_jobs'. The
'update_jobs' mechanism takes three hook functions as arguments, which
implement the applications-defined policy for producing and consuming
data, and for the completion of jobs.

Issue #3283
2019-05-06 16:15:25 +02:00
Norman Feske
976f67eee6 os: make 'Block::Operation' printable
Issue #3283
2019-05-06 16:15:25 +02:00
Norman Feske
e5f27b44b5 block_session: turn 'Connection' into template
As a preparatory step for introducing the new block-client API, we have
to turn the 'Block::Connection' into a class template. The template
argument will be used to tie an application-defined job type to the
block connection.

Issue #3283
2019-05-06 16:15:25 +02:00
Norman Feske
6c0dd9fe3b block_session: use types from block/request.h
Issue #3283
2019-05-06 16:15:25 +02:00
Norman Feske
c433f87000 os: batching of packet-stream source operations
This patch adds support for manually triggering the wakeup of the packet
sink by the source. This way, a packet source becomes able to marshal
batches of submissions or unmarshal batches of acknowledgements before
yielding the control over to the sink.

Issue #3283
2019-05-06 16:15:25 +02:00
Norman Feske
593e971121 block_session: SYNC and TRIM as async operations
This patch removes the blocking Block::Session::sync RPC function and
adds the asynchronous operations SYNC and TRIM to the block session's
packet-stream interface.

Even though the patch adjusts all block components to the interface
change, the components keep the former blocking handling of sync
internally for now because of the design of the 'Block::Driver'
interface. This old interface is not worth changing. We should instead
migrate the block servers step by step to the new
'Block::Request_stream' API.

Fixes #3274
2019-05-06 16:15:24 +02:00
Norman Feske
e058adc4fe block_session: add client-defined request tag
The new request tag allows a block-session client to uniquely correlate
acknowledgements with outstanding requests. Until now, this was possible
for read and write operations by taking the value of the request's
packet-stream offset. However, SYNC and TRIM requests do not carry any
packet-stream payload and thereby lack meaningful offset values. By
introducing the notion of a 'tag', we can support multiple outstanding
requests of any type and don't need to overload the meaning of the
'offset' value.

Issue #3274
2019-05-06 16:15:24 +02:00
Norman Feske
a39474a245 block-request stream: split Operation from Request
This patch splits the 'Request' definition into smaller types that are
suitable for the client-side API too.

The new 'Operation' type comprises the block operation's type (opcode)
and the operation's arguments (block number, block count).
The former 'Request::operation_defined' is now 'Operation::valid'.
The 'Request' aggregates an 'Operation', which changes its object
layout.

Note that this commit relaxes the bit-precise definition of 'Request' to
facilitate the use of 'unsigned long' where appropriate, in particular
for the request tag (which should correspond to an 'Id_space::Id'). The
originally bit-precise definition was pursued to allow the sharing of
the 'Request' type between SPARK and C++ code. However, it turns out
that defining a native type in each language and a (set of) converting
constructors is a more natural approach.

Issue #3283
2019-05-06 16:15:24 +02:00
Norman Feske
51f51c18af block/request_stream: rename wakeup_client
This patch renames 'wakeup_client' to 'wakeup_client_if_needed' to
clarify that the method triggers signals only when needed, not on every
call.

The name 'wakeup_client' is prone to misguide users to call the function
conditionally as an optimization, thereby complicating the code, but to
no effect.

Fixes #3279
2019-05-03 13:53:12 +02:00
Norman Feske
bbe3ee8dc5 block_session: server-defined payload alignment
This patch replaces the formerly fixed 2 KiB data alignment within the
packet-stream buffer by a server-defined alignment. This has two
benefits.

First, when using block servers that provide small block sizes like 512
bytes, we avoid fragmenting the packet-stream buffer, which occurs when
aligning 512-byte requests at 2 KiB boundaries. This reduces meta data
costs for the packet-stream allocator and also allows fitting more
requests into the buffer.

Second, block drivers with alignment constraints dictated by the
hardware can now pass those constraints to the client, thereby easing
the use of zero-copy DMA directly into the packet stream.

The alignment is determined by the Block::Session_client at construction
time and applied by the Block::Session_client::alloc_packet method.
Block-session clients should always use this method, not the 'alloc_packet'
method of the packet stream (tx source) directly. The latter merely
applies a default alignment of 2 KiB.

At the server side, the alignment is automatically checked by
block/component.h (old API) and block/request_stream.h (new API).

Issue #3274
2019-05-03 13:53:12 +02:00
Norman Feske
2208220c12 block session: remove Block::Session::Operations
This patch modernizes the 'Block::Session::info' interface. Instead of
using out parameters, the 'init' RPC function returns a compound 'Info'
object now. The rather complicated 'Operations' struct is replaced by
a 'writeable' attribute in the 'Info' object.

Fixes #3275
2019-05-03 13:53:12 +02:00
Martin Stein
9d236e8e03 block/request: fixed enum values 2019-04-09 12:30:35 +02:00
Martin Stein
a9851aca55 block/request: add member 'tag'
Issue #3274
2019-04-09 12:30:35 +02:00
Emery Hemingway
a635873568 VFS: Replace global response handlers with local handlers
Replace the I/O response handler that is passed to the VFS at
construction with an object that is dynamically attached to handles.
This object shall also accept read-ready notifications, and plugins are
encouraged to keep handles awaiting ready-ready notifications separate
from handles that await I/O progress.

Replace the use of handle lists in plugins with handle queues, this
makes the code easier to understand and the ordering of notifications to
the application more explicit.

These changes replace the use of the Post_signal_hook from all VFS
plugins, applications must assume that read-ready and I/O notifications
occur during I/O signal dispatch and use an Io_progress_handler at its
entrypoints to defer response until after signal dispatching.

Fix #3257
2019-04-09 12:30:34 +02:00
Josef Söntgen
3362216b66 os: clear remaining samples in Audio packet
... instead of potentially producing out-of-bounds write in the source
buffer.

Fixes #3264.
2019-04-09 12:30:34 +02:00
Josef Söntgen
5ceba11982 os: make Audio_out content filler data arg const
Issue #3264.
2019-04-09 12:30:34 +02:00
Emery Hemingway
800b4e44b1 Reduce Vfs::Vfs_handle::Context to empty struct type
The "Vfs::Vfs_handle" type should not contain any public members that
can be initialized by the VFS internally and by the application, so
remove inheritance from the "Genode::list::Element" class. The VFS
plugins must instead use lists of "Vfs::Vfs_handle" sub-classes, the
lifetime of which are always managed by the plugin.

Ref #3036
2019-04-01 19:33:47 +02:00
Norman Feske
4353c9e0f1 os: make Block::Request_stream::Ack noncopyable
This is a safeguard against accidentally taking the 'Ack' interface as a
value instead of a reference.

The 'Payload' interface should also not be copied (and potentially
stored) because it contains a pointer.
2019-03-19 11:00:01 +01:00
Norman Feske
4f99224255 ram_fs: increase max file size on 64 bit to 8 GiB
Fixes #2315
2019-03-18 15:57:00 +01:00
Norman Feske
ebd9f36b0d os: Pixel_rgba::transfer interface
The new 'transfer' function interface defines how pixel/alpha values
sampled from texture are applied to a destination pixel, similar to the
role of a fragment shader in GPU-based rendering. The transfer function
can be customized by defining custom pixel types, which may be (but
don't need to be) derived from 'Pixel_rgba'.

Issue #3221
2019-03-18 15:56:24 +01:00
Emery Hemingway
93fb79f357 Check for existing directories at Vfs::Dir_file_system
Return OPENDIR_ERR_NODE_ALREADY_EXISTS for existing directories.
Remove deprecated 'is_directory' method.

Fix #3083
2019-03-04 10:57:04 +01:00
Christian Helmuth
fb155b95c7 Clarify documentation of Block::Session::info()
Also cleanup some proscribed abbrevations.

Fixes #3185
2019-02-28 11:34:07 +01:00
Johannes Schlatow
c1caeb7e70 zynq: improve cache handling in nic_drv
Clean and invalidate caches in nic_drv before/after triggering DMA.

Issue #3179
2019-02-26 14:47:02 +01:00
Norman Feske
5ed5fddb7c base/os: remove deprecated APIs
This commit removes APIs that were previously marked as deprecated. This
change has the following implications:

- The use of the global 'env()' accessor is not possible anymore.
- Boolean accessor methods are no longer prefixed with 'is_'. E.g.,
  instead of 'is_valid()', use 'valid()'.
- The last traces of 'Ram_session' are gone now. The 'Env::ram()'
  accessor returns the 'Ram_allocator' interface, which is a subset of
  the 'Pd_session' interface.
- All connection constructors need the 'Env' as argument.
- The 'Reporter' constructor needs an 'Env' argument now because the
  reporter creates a report connection.
- The old overload 'Child_policy::resolve_session_request' that returned
  a 'Service' does not exist anymore.
- The base/printf.h header has been removed, use base/log.h instead.
- The old notion of 'Signal_dispatcher' is gone. Use 'Signal_handler'.
- Transitional headers like os/server.h, cap_session/,
  volatile_object.h, os/attached*_dataspace.h, signal_rpc_dispatcher.h
  have been removed.
- The distinction between 'Thread_state' and 'Thread_state_base' does
  not exist anymore.
- The header cpu_thread/capability.h along with the type definition of
  'Cpu_thread_capability' has been removed. Use the type
  'Thread_capability' define in cpu_session/cpu_session.h instead.
- Several XML utilities (i.e., at os/include/decorator) could be removed
  because their functionality is nowadays covered by util/xml_node.h.
- The 'os/ram_session_guard.h' has been removed.
  Use 'Constrained_ram_allocator' provided by base/ram_allocator.h instead.

Issue #1987
2019-02-26 14:44:15 +01:00
Norman Feske
b24edc1633 Remove residual uses of deprecated APIs
Issue #1987, related also to issue #3163 and issue #3164.
2019-02-19 11:12:12 +01:00
Norman Feske
b3727a9b46 Add missing override annotations
Issue #3159
2019-02-19 11:12:11 +01:00
Norman Feske
00fa48a886 os: new Block::Request_stream API
Issue #3092
2019-02-19 11:12:10 +01:00
Josef Söntgen
f9523c32d5 os: accessor for addr and size of packet stream 2019-02-19 11:08:18 +01:00
Norman Feske
3858e1df51 os: support for deferred packet-stream signals
This patch enhances the packet-stream API with the principle ability to
side-step the built-in implicity data-flow signals and manage the
signals manually. This allows for a more efficient batching of packet
processing.

Issue #3092
2019-02-19 11:08:18 +01:00
Norman Feske
69d6145f5a os: don't hide tx_cap from block-session interface
The 'tx_cap' RPC function is only used at session-creation time. For
this reason, it was not listed in the "official" RPC interface in
'block_session.h'. However, this makes the interface more obscure than
it needs to be. So this patch promotes it to a regular RPC function.

Issue #3092
2019-02-19 11:08:18 +01:00
Emery Hemingway
22327b43ae Refactor terminal for intrinsic Unicode support
Refactor the graphical terminal server to internally represent
characters as 16-bit codepoints and handle the duplex terminal stream as
UTF-8.

- Make the Codepoint class printable to the Output interface
- Decode data received at the Terminal session from UTF-8 to a 16-bit
  character
- Pass 16-bit characters through terminal decoder and char-cell arrays
- Send Unicode through terminal session in a burst of UTF-8 bytes

Fix #3148
2019-02-19 11:08:17 +01:00
Norman Feske
d3759811b6 os/session_policy: warn if no policy exists
The situation where a 'Session_policy' is constructed for a label with
no matching policy is in almost all cases a configuration problem.
A diagnostic message eases pin-pointing such mistaks. By adding the
message to the 'Session_policy', servers don't need to manually handle
the exception to provide diagnostic information. This simplifies the
server code in many components.
2019-01-30 13:49:55 +01:00
Norman Feske
ba2b0b8360 gems: remove the use of deprecated APIs
This patch also updates os/slave.h because the app/launcher cannot be
reasonably updated without it.

Issue #1987
Issue #3125
2019-01-30 13:49:54 +01:00
Norman Feske
6b94e65a95 os: avoid using deprecated APIs
Issue #1987
Issue #3125
2019-01-30 13:49:54 +01:00
Norman Feske
bf62d6b896 Move timer from os to base repository
Since the timer and timeout handling is part of the base library (the
dynamic linker), it belongs to the base repository.

Besides moving the timer and its related infrastructure (alarm, timeout
libs, tests) to the base repository, this patch also moves the timer
from the 'drivers' subdirectory directly to 'src' and disamibuates the
timer's build locations for the various kernels. Otherwise the different
timer implementations could interfere with each other when using one
build directory with multiple kernels.

Note that this patch changes the include paths for the former os/timer,
os/alarm.h, os/duration.h, and os/timed_semaphore.h to base/.

Issue #3101
2019-01-14 12:33:57 +01:00
Norman Feske
76e96e92cb nitpicker: avoid color bleeding
This patch improves the output of opaque pixels in the presence of an
alpha channel by adding a special case for the maximum alpha value.

Fixes #2831
2019-01-07 12:43:23 +01:00
Norman Feske
56cb1885bb decorator: make window-layout updates more robust
This patch improves the window decorators in the following respects:

* Strict warnings are enabled now.
* The use of the 'List_model' makes the application of window-
  layout changes more robust. This is particularly the case for
  the restacking of windows.
* Display-mode changes are now supported by both decorators.

Issue #3094
2019-01-07 12:33:57 +01:00
Josef Söntgen
108034b050 packet_stream: packets w/o payload are still valid
Packets whose data is stored within the Packet_descriptor itself
but not as payload, .e.g Usb::Packet_descriptor, are valid packets
after all. So loosen the packet valid check for zero-sized packets
is reasonable.

Fixes #3076.
2019-01-07 12:33:54 +01:00
Alexander Boettcher
85b998a4af os: nullpointer check in os/path.h
Issue #3022
2019-01-07 12:25:45 +01:00
Alexander Boettcher
dbeb1b82a9 os: avoid warning in ethernet.h
issued by clang/llvm static analyzer
2019-01-07 12:25:45 +01:00
Alexander Boettcher
aa03c4ce9f os: avoid garbage warnings in app/painter
Issue #3022
2019-01-07 12:25:45 +01:00
Alexander Boettcher
5572430ba5 os: avoid ambiguous warnings for vfs/server
between File_system and Vfs::File_system

Issue #3022
2019-01-07 12:25:45 +01:00
Emery Hemingway
9c7d5b2a66 Implement print and min/max for Microseconds and Milliseconds
Ref #3050
2019-01-07 12:25:42 +01:00
Emery Hemingway
a2bdcc68c2 Throw exception for invalid packets at packet streams
Some application code is dereferencing the pointer returned by
'packet_content' at packet streams without checking that it is valid.
Throw an exception rather than return a null pointer, except for
zero-length packets, which have somewhat implicit invalid content and
that we believe to be properly handled in all current cases.

The client-side of a packet stream cannot take corrective action if the
server-side is sending packets with invalid content, but the servers
that provide packet streams should catch this exception to detect
misbehaving clients.

Ref #3059
2018-11-29 11:54:29 +01:00
Johannes Schlatow
74f2954013 packet_stream: improve buffer alignment
The bulk buffer is now 64Byte-aligned so that the allocated
packets get aligned likewise (assumed the packet allocator uses an
appropriately aligned block size). This ensures that each packet
starts at a new cache line on common platforms.

Issue #3053
2018-11-29 11:46:02 +01:00
Christian Prochaska
fd7ab79fe0 vfs: implement 'complete_sync()' in 'Single_file_system'
Fixes #3047
2018-11-27 11:38:13 +01:00
Norman Feske
c60604062c decorator: improve robustness of window restacking
This patch improves the detection of new appearing top-most windows.
Such a window should prompt the decorator to bring the corresponding
nitpicker view(s) to the front of the view stack. The original
implementation relied on hints provided by the layouter (the 'topped'
attribute). With the patch, the decorator tracks the top-most window by
itself, which improves the robustness.

As a second improvement, the patch defers the destruction of windows to
the point when all other window operations are completed. This hides
intermediate states when replacing one window by another in one step,
which is typical for console-like scenarios. Hence, this patch should
eliminate flickering artifacts when switching from one virtual console
to another.

Issue #3031
2018-11-16 14:53:26 +01:00
Christian Prochaska
9a2af89c4e vfs: use correct enum values in 'Dir_file_system::open_composite_dirs()'
Fixes #2968
2018-09-13 15:21:11 +02:00
Josef Söntgen
0603481aaa terminal: remove upper character range check
The more constrained upper limit leads to ommitted characters like
umlauts.

Fixes #2957.
2018-09-03 17:07:00 +02:00
Emery Hemingway
2041f957da Terminal: improved handling of escape sequences
Add additional parsing modes to the sequence decoder to detect and
discard unhandled sequences for ECMA-48, DEC private, and Xterm.

Add new behavior for cursor movement, cursor hiding, character deletion,
and line-wrapping.

Fix #2923
2018-08-08 11:27:41 +02:00
Emery Hemingway
08b774e318 VFS: add an error to to the Sync_result enum
Sync errors can be used to indicate failed writes across the File_system
session.

Ref #2920
2018-08-02 14:36:49 +02:00
Sebastian Sumpf
037a0d6822 usb_drv: add isochronous packet support
Commit extents USB session an driver accordingly.

issue #2910
2018-08-02 14:36:46 +02:00
Christian Prochaska
b2f7a6a934 vfs_lxip: look up path in 'leaf_path()'
Fixes #2913
2018-08-02 14:36:43 +02:00
Christian Prochaska
e3005266b6 vfs: no 'handle_io_response()' in regular VFS functions
Calling 'handle_io_response()' in a regular VFS function (in contrast to a
post-signal hook) can cause problems if the caller of the VFS function holds
a lock which prevents the io response handler from returning.

With this commit, the user of the VFS becomes responsible for unblocking
threads which might be blocking after a failed 'queue_read()', 'queue_sync()'
or 'write()' call.

Fixes #2896
2018-08-02 14:36:43 +02:00
Emery Hemingway
c18bee3d5b Input::Binding for non-C++ language bindings
Quietly insert forward declaration of a Input::Binding class, and make
it a friend of Input::Event and Input::Session_client. This is to allow
non-C++ language bindings (Nim) to access private members by providing
their own implementation of the Binding class.

Fix #2889
2018-07-03 09:39:35 +02:00
Emery Hemingway
e8dc6c84a4 Add missing XML header to vfs/file_system.h
Ref #2870
2018-07-03 09:39:34 +02:00
Emery Hemingway
366913c146 ram_fs: unmark modification from nodes that have been synced
Removed the modified mark from handles that have been written to when
they are synced, otherwise a notification would be sent again when the
handle is closed.

Ref #2839
2018-06-29 10:44:54 +02:00
Norman Feske
87be50c542 os: add Expanding_reporter::generate(Xml_node)
This method allows for the verbatim reporting of an existing XML node.
2018-05-30 13:36:40 +02:00
Martin Stein
734d174f33 net: get rid of unused mac_from_string method
Issue #2815
2018-05-30 13:36:36 +02:00
Martin Stein
342bdaf4a2 net: generic ascii_to for Netaddress template
Issue #2837
2018-05-30 13:36:32 +02:00
Christian Prochaska
c5f1ac615c Usb::Packet_handler: avoid completion handler recursion
Fixes #2828
2018-05-30 13:36:20 +02:00
Emery Hemingway
29c08d4751 Fix types for VFS error printing
Ref #2793
2018-05-30 13:36:14 +02:00
Martin Stein
41dbad13e4 nic_router/nic_bridge: re-work Mac_allocator
The old MAC allocator had several drawbacks:

* the address base was a public static that could and must have been written
  directly from outside the class
* the in-use-flag array was based on unsigned values consuming 4 bytes each
  for only one bit of information
* it was a public header that we actually don't want to expose to all
  components but only to the few networking components
* it used the not-so-safe bit notation for integer members of GCC

The new version fixes all these drawbacks.

Issue #2795
2018-05-30 13:36:11 +02:00
Martin Stein
980f3e9c5c net: use Size_guard for packet-data accessors
Instead of handing over the maximum available size to the packet data
accessors, hand over a size guard that keeps track of the packets
boundaries.

This commit also moves the size-guard utilitiy header of Ping and NIC
Router to the include/net directory making it a part of the net library.
It applies the new approach to all net-lib users in the basic repositories.

Ping looses its configurability regarding the ICMP data size as this would
require an additional method in the size guard which would be used only by
Ping.

The size guard was also re-worked to fit the fact that a packet can
bring a tail as well as a header (Ethernet).

Issue #2788
2018-05-30 13:36:11 +02:00
Emery Hemingway
483d005350 VFS: detect root dir based on config node type
Ref #2782
2018-05-03 15:32:00 +02:00
Norman Feske
8e0cc44e24 terminal: preserve content during resize
This patch eliminates the flickering of the terminal during resize.
2018-05-03 15:31:59 +02:00
Emery Hemingway
0b980073c1 VFS: close handles via handle method
The using pattern 'handle->close' is less error prone than attempting
'handle->ds().close(handle)' or 'fs.close(handle)'.

Ref #2782
2018-05-03 15:31:57 +02:00
Martin Stein
11a297b557 net: consider tail of Ethernet frame
The Ethernet payload may be followed by padding of variable length and
the FCS (Frame Check Sequence). Thus, we should consider the value
"Ethernet-frame size minus Ethernet-header size" to be only the maximum
size of the encapsulated IP packet. But until now, we considered it to
be also the actual size of the encapsulated IP packet. This commit fixes
the problem for all affected components of the Genode base-repository.

Fixes #2775
2018-05-03 15:31:57 +02:00
Martin Stein
841d583678 net: implement Udp_packet::checksum_error
For checking the checksum of a UDP packet.

Issue #2775
2018-05-03 15:31:56 +02:00
Martin Stein
6b55790e73 net: use generic internet checksum
This reduces the redundant implementations of checksum calculation to
one generic implementation, makes the checksum interface conform over
all protocols, and brings performance optimizations. For instance,
the checksum is now calculated directly in big endian which saves us
most of the previously done byte-re-ordering.

Issue #2775
2018-05-03 15:31:56 +02:00
Martin Stein
373134c4e7 net: safer access to packet data
Replace packet method 'T *data' by the new methods 'T &reinterpret_data'
for parsing or modifying existing sub-protocol packets and 'T
&construct_at_data' for composing a new sub-protocol packet. This has
the advantage that, when composing a new packet, the default constructor
that zero-fills the packet is always called first.

Fixes #2751
2018-05-03 15:31:54 +02:00
Norman Feske
afcad2a968 os: new Input::Event representation
This commit changes the 'Input::Event' type to be more safe and to
deliver symbolic character information along with press events.

Issue #2761
Fixes #2786
2018-05-03 15:31:25 +02:00
Norman Feske
1f1302e185 terminal: use VFS-based font handling
This patch replaces the terminal's formerly built-in fonts with the new
VFS-based font handling.

To avoid the copying of the terminal's font configuration across run
scripts, this patch adds the new terminal/pkg runtime package, which
includes everything needed for instantiating a terminal: the actual
terminal component, the library dependencies (vfs_ttf, which in turn
depends on the libc), a font (bitstream-vera), and a reasonable default
configuration.

Fixes #2758
2018-05-03 15:31:17 +02:00
Norman Feske
0011dd1623 terminal: remove built-in keyboard layout handling
Fixes #2757
2018-04-19 13:38:34 +02:00
Norman Feske
8bcf540915 os: add Text_painter::Font::height method
Issue #2716
2018-04-19 13:38:33 +02:00
Norman Feske
0a72b37363 vfs: Simple::env::apply_config 2018-04-19 13:38:33 +02:00
Emery Hemingway
3c07860aad VFS: watch result is ERR_UNACCESSIBLE by default
Ref #2745
2018-04-19 12:38:50 +02:00
Emery Hemingway
97f50e8e15 VFS: dir fs Opendir must open at least one directory to succeed
Ref #2745
2018-04-19 12:38:50 +02:00
Emery Hemingway
82a683eccc VFS: construct file-systems using Vfs::Env object
Reduce the size and forward compatibility of VFS file-system
constructors by passing an object holding accessors for 'Genode::Env',
'Genode::Allocator', response handlers, and the root file-system.

Fix #2742
2018-04-19 12:38:27 +02:00
Martin Stein
f9af0e6f0c net: packed attribute for Icmp_packet 2018-04-10 13:03:26 +02:00
Martin Stein
ca1751528d net: utilities for DHCP parameter-request lists
Issue #2738
2018-04-10 11:20:49 +02:00
Norman Feske
9d233b73a3 nitpicker: improve 'Session::focus' handling
Nitpicker's 'Session:focus' call used to trigger a one-off focus change
at call time. This focus change did not pass the same code paths as a
focus change triggered by a "focus" ROM update, which led to
inconsistencies.

This patch changes the implementation of 'Session::focus' such that the
relationship of the caller and the focused session is preserved after
call time. Whenever the calling session is focused in the future, the
specified session will receive the focus instead. So 'Session::focus'
represents no longer a single operation but propagates the information
about the inter-session relationship. This information is taken into
account whenever the focus is evaluated regardless of how the change is
triggered.

This makes the focus handling in scenarios like the window manager more
robust.

Issue #2746
2018-04-10 11:20:47 +02:00