Commit Graph

6668 Commits

Author SHA1 Message Date
Josef Söntgen
de8411a5e1 cxx: add missing low-level symbols
Issue #3921
2020-10-23 14:56:36 +02:00
Christian Helmuth
5be1c793a5 depot: update recipe hashes 2020-10-23 14:16:38 +02:00
Emery Hemingway
b4076e762c libc: log a message and exit for raise(...)
Fix #3919
2020-10-21 09:14:55 +02:00
Christian Helmuth
6ea628195f dde_bsd: update mirror URL
It seems RWTH Aachen mirrors only ancient versions currently.
2020-10-20 09:14:40 +02:00
Martin Stein
64487ded7c timeout: don't warn "timestamp value too big" too often
Fixes #3657
2020-10-19 14:26:56 +02:00
Christian Prochaska
405955eaef libc: implement 'posix_memalign()'
Fixes #3915
2020-10-15 15:41:55 +02:00
Alexander Boettcher
0aaed47652 nova: re-/store ep fpu state in vm_session
Fixes #3913
2020-10-13 14:42:06 +02:00
Alexander Boettcher
20606bc6de foc: save/restore fpu state in vm_session
Issue #3913
2020-10-13 14:42:03 +02:00
Christian Prochaska
9cd38a6846 libc: rwlock cleanup
Issue #3912
2020-10-13 14:38:43 +02:00
Christian Prochaska
bf4afefaa1 libc: use semaphore in rwlock implementation
Fixes #3912
2020-10-13 08:21:04 +02:00
Christian Helmuth
f09b0dc224 Improve synchronization in lwip.run
The lynx HTTP GET test was started before the HTTP server was up and
therefore failed on Qemu/PBXA9.

Issue #3874
2020-10-09 16:13:14 +02:00
Christian Prochaska
658030ef49 qt5: update port for qtwebengine improvements
- unlink shared memory files
- lower maximum number of socket pool sockets to reduce chance of file
  descriptor exhaustion
- fix a build dependency which caused sporadic parallel build errors

Fixes #3910
2020-10-09 13:51:26 +02:00
Christian Prochaska
4e8bfed5b1 libc: duplicate the file descriptor on shared 'mmap()' mappings
Fixes #3909
2020-10-09 13:50:35 +02:00
Christian Prochaska
5c47fa0d41 libc: reduce file descriptor lookup exceptions in 'select()'
Fixes #3908
2020-10-09 13:48:23 +02:00
Christian Prochaska
058f2e687c libc: make 'mmap()' address alignment configurable
With this commit, the alignment of anonymous 'mmap()' allocations can be
configured like this:

<config>
  <libc>
    <mmap align_log2="21"/>
  </libc>
</config>

Fixes #3907
2020-10-09 13:47:33 +02:00
Josef Söntgen
7d21335ac9 vfs/oss: VFS plugin for Audio_out access via files
This plugin gives access to the Audio_out session by roughly
implementing a OSS pseudo-device. It merely wrapps the session and does
not provide any resampling or re-coding.

Fixes #3891.
2020-10-09 13:44:27 +02:00
Josef Söntgen
3d2b0cab93 libc: implement SNDCTL I/O control handling
In the same vein as the terminal and block I/O controls, the sound
controls are implemented via poperty files and match the OSS
API ([1] features a nice overview while [2] is v3 and [3] gives
in-depth information on the current v4.x API we eventually might want
to implement).

  [1] https://wiki.freebsd.org/RyanBeasley/ioctlref/
  [2] http://www.opensound.com/pguide/oss.pdf
  [3] http://manuals.opensound.com/developer/

The controls currently implemented are the ones used by the cmus OSS
output plugin, which was the driving factor behind the implementation.
It uses the obsolete (v3) API and does not check if the requested
parameter was actually set, which should be done according to the
official OSS documentation.

At the moment it is not possible to set or rather change any
parameters. In case the requested setting differs from the parameters
of the underlying Audio_out session - in contrast to the suggestion in
the OSS manual - we do not silently adjust the parameters returned
to the callee but outright fail the I/O control operation.

The following list contains all currently handled I/O controls.

  * SNDCTL_DSP_CHANNELS sets the number of channels. We return the
    available channels here and return ENOTSUP if it differs from
    the requested number of channels.

  * SNDCTL_DSP_GETOSPACE returns amount of playback data that can
    be written without blocking. For now it amounts the space left
    in the Audio_out packet-stream.

  * SNDCTL_DSP_POST forces playback to start. We do nothing and return
    success.

  * SNDCTL_DSP_RESET is supposed to reset the device when it is
    active before any parameters are changed. We do nothing and return
    success.

  * SNDCTL_DSP_SAMPLESIZE sets the sample size. We return the
    sample size of the underlying Audio_out session and return ENOTSUP
    if it differs from the requested number of channels.

  * SNDCTL_DSP_SETFRAGMENT sets the buffer size hint. We ignore the
    hint and return success.

  * SNDCTL_DSP_SPEED sets the samplerate. For now, we always return
    the rate of the underlying Audio_out session and return ENOTSUP
    if it differs from the requested one.

This commit serves as a starting point for further implementing the
OSS API by exploring more users, e.g. as VirtualBox/Qt5/SDL2 audio
backend or a more sophisticated progam like sndiod.

Issue #3891.
2020-10-09 13:44:14 +02:00
Christian Helmuth
bcf1cc6397 Ensure high priority for timer in test.run 2020-10-09 13:37:17 +02:00
Martin Stein
bff624c75a test/entrypoint: extend timeout interval
At least on some PIT-based platforms (x86_32 + pistachio/okl4/sel4), we run
into trouble with the reworked timeout framework that now proccesses all
pending timeouts before calling their handlers. This order change leads to a
higher rate of handling of short periodic timeouts in the timer driver which
can cause lower prioritized components to starve. Especially, if submitting
signals (from timer to client) isn't cheap (as is the case on qemu + pistachio
for example).

Issue #3884
2020-10-09 13:37:14 +02:00
Martin Stein
512be0a52a test/timer_rate: determine lowest accurate period 2020-10-09 13:37:10 +02:00
Christian Helmuth
91f8281618 depot: update recipe hashes 2020-10-09 13:35:57 +02:00
Christian Prochaska
0e01729d77 libc: handle file descriptor allocation errors
Fixes #3906
2020-10-09 13:35:57 +02:00
Sebastian Sumpf
fe1ee05186 recipe: imx53_qsb_drivers
Do not copy imx53 specfic source code since it has been unified within
the GPIO driver.

follow up for issue #3900
2020-10-09 13:35:57 +02:00
Christian Helmuth
ec957739e9 Adapt some RAM quotas for 2560x1080 screens 2020-10-09 13:35:57 +02:00
Piotr Tworek
8d5005e03a os: add VirtIO nic driver
The driver is faily simple and does not support fancy features like
TCP checksum offloading or vlan filtering, but it is fully capable of
running every Genode network based scenario I've tried. Its currently
known to work on virt_qemu arm platforms and x86_64.

Fix #3825
2020-10-09 13:35:57 +02:00
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
Piotr Tworek
9bd548c4bd os: add platform_drv config generator for virt_qemu
The VirtIO device configuration on Qemu is dynamic. The
order and presence of different command line switches affects
base address and interrupt assignment of each device. One could
probably hard-code the necessary switches and resulting XML ARM
platform driver configuration in each run script, but this seems
like troublesome and hard to maintain solution.

This patch explores an alternative approach to the problem.
It implements a ROM driver which probes the address space region
Qemu virt machines assign to VirtIO MMIO devices and exposes the
result as XML via a ROM session. This XML output can be fed directly
as config to the generic ARM platform driver.

Ref #3825
2020-10-09 13:35:57 +02:00
Piotr Tworek
fe0ad0addb tool: Consolidate qemu nic setup.
Right now the same code dealing with nic setup on qemu is duplicated
in many different run scripts. It makes it unnecesarily complex to
change the existing config or add support for new nic types. Lets move
all this common code to qemu.inc.

Ref #3825
2020-10-09 13:35:57 +02:00
Stefan Kalkowski
aa2511e209 platform_drv: make it available for arm_64 generic
Ref #3825
2020-10-09 13:35:57 +02:00
Stefan Kalkowski
3cf3344fa3 sel4 + foc: extend port's tool check rules 2020-10-09 13:35:56 +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
Sebastian Sumpf
b9bd179e54 gpio_drv: remove specs for imx53 and imx6
Also cleanup run scripts and recipes were gpio driver is not required,
update the ones were it is.

issue #3900
2020-10-09 13:35:56 +02:00
Sebastian Sumpf
6c6deb7e8b dde_linux: add touch to i.MX8 recipe
Add touch screen and event filter to drivers interactive package.

issue #3900
2020-10-09 13:35:56 +02:00
Sebastian Sumpf
d387eba0ba os: driver recipe for i.MX8 drivers
Includes touch and gpio driver

issue #3900
2020-10-09 13:35:56 +02:00
Sebastian Sumpf
96eb83f19a os: Synaptics DSX touch screen driver
Provides touch event service for i.MX8M Quad only

issue #3900
2020-10-09 13:35:56 +02:00
Sebastian Sumpf
89972b11b7 gpio_drv: use platform session for i.MX
This makes the driver work for all i.MX boards. A platform driver with
the board specific configuration is required.

issue #3900
2020-10-09 13:35:56 +02:00
Sebastian Sumpf
664b861f9d imx8_fb_drv: MIPI DSI display support
- support for Northwest Logic MIPI DSI bridge
- support for Radium panel (NXP MX8_DSI_OLED1)
- new 'DSI-1' connector in driver config file

issue #3900
2020-10-09 13:35:56 +02:00
Sebastian Sumpf
27f705bc48 bootstrap: iomux adaptions for i.MX8 MIPI
These settings were obtained with a JTAG debugger from a running Linux
system. They work for MIPI as well as for HDMI.

issue #3900
2020-10-09 13:35:56 +02:00
Alexander Boettcher
325e9cb9fa platform_drv(x86): avoid memory leak 2020-10-09 13:35:56 +02:00
Alexander Boettcher
50b10ef4a5 aes_cbc_4k: extend test and run in autopilot
- to compare crypted text with host openssl

Fixes #3905
2020-10-09 13:35:56 +02:00
Alexander Boettcher
c0f8022a78 aes_cbc_4k: use libcrypto
Issue #3905
2020-10-09 13:35:56 +02:00
Alexander Boettcher
5d808cdc01 platform_drv: extend MSI-X supports
The patch handles the case, that the memory for the MSI-X table is part
of one of the Pci::Resource Memory BARs, which got allocated beforehand already.

With this commit, the platform driver will not fall back to use legacy IRQs or MSI, whereby MSI-X is available actually. Additionally, this patch avoids a lot of red
messages about non available IO-MEM printed by the roottask.

Fixes #3904
2020-10-09 13:35:56 +02:00
Christian Helmuth
abefca500b libc: fix deadlock in pthread_cond_timedwait/signal()
The deadlock occured with three concurrently running threads: two
waiters calling pthread_cond_timedwait() and one signaller calling
pthread_cond_signal().

If waiter W1 hits its timeout, the signaller may have called
pthread_cond_signal(), detected this waiter and posted the internal
'signal_sem' concurrently. Then, the signaller waits for 'handshake_sem'
to ensure the waiter got woken up.

Waiter W1 can't consume the 'signal_sem' post by
'sem_wait(&c->signal_sem)' because another waiter W2 may have consumed
the post already above in sem_wait/timedwait(). Waiting for a post on
'signal_sem' would block the waiter W1 in perfect deadlock with
signaller on 'handshake_sem'. As W1 also owns 'counter_mutex' in this
situation, waiter W2 would block when trying to aquire 'counter_mutex'
and can't resolve the situation.

So, W1 does nothing in this case and we accept the spurious wakeup on
next pthread_cond_wait/timedwait().
2020-10-09 13:35:56 +02:00
Martin Stein
7feea78991 timeout: rework timeout framework
* get rid of alarm abstraction
* get rid of Timeout::Time type
* get rid of pointer arguments
* get rid of _discard_timeout indirection
* get rid of 65th bit in stored time values
* get rid of Timeout_scheduler interface
* get rid of uninitialized deadlines
* get rid of default arguments
* get rid of Timeout::_periodic
* get rid of Timeout::Raw
* use list abstraction
* only one interface for timeout handlers
* rework locking scheme to be smp safe
* move all method definitions to CC file
* name mutexes more accurate
* fix when & how to set time-source timeout
* fix deadlocks

Fixes #3884
2020-10-09 13:35:56 +02:00
Martin Stein
9e5d479d03 timeout: test smp support
Ref #3884
2020-10-09 13:35:56 +02:00
Christian Helmuth
26011a7151 libc: update status for component select handlers
In case of contexts blocked in select() the monitor updates the
file-descriptor status, but if the entrypoint is just blocked for the
select handler, the status must be updated explicitly on
dispatch_select().
2020-10-09 13:35:56 +02:00
Stefan Kalkowski
bbb017dc24 muen: update to Community 2019 toolchain version
Fix #3903
2020-10-09 13:35:55 +02:00
Alexander Boettcher
04d3c9e750 nova: re-enable DMAR super pages in kernel
Fixes #3902
2020-10-09 13:35:55 +02:00
Alexander Boettcher
e5fe9c6fc7 qemu-usb: catch exception on already gone devices
Fixes #3893
2020-10-09 13:35:55 +02:00
Norman Feske
04821b1abc nitpicker: apply focus change w/o input events
This patch fixes the corner case where the keyboard focus is defined
independently from user interactivity, e.g., the activation of a
screensaver or lock screen.

In this case, nitpicker would update its internal focus state not before
the next input event is handled. Should this input event be a press
event, this event would wrongly be delivered to the prior focused
session. Another problematic situation is the initial state before the
very first input event occurs. Since the focus remains undefined until
the first input event is handled, an initial key press event would not
be delivered.

This is a regression caused be the transition to the event-session
interface and the removal of the nitpicker's periodic way of operation.
The patch fixes the problem by applying pending focus changes not only
at the input processing but also on the code path that responds to focus
changes (e.g., focus-rom update).

Issue #3812
2020-10-09 13:35:55 +02:00
Alexander Boettcher
afab15f1a4 linux: round up dataspace to 4k sizes
Issue #3901
2020-10-09 13:35:55 +02:00
Alexander Boettcher
e61f6cfd38 base: add thread migration test
Issue #3842
2020-10-09 13:35:55 +02:00
Alexander Boettcher
90bea1499e core: store new affinity on successful migration
Adjust the base-* platforms to acknowledge new thread location solely if
migration is supported and succeeded. Otherwise the wrong thread
locations are observed via the trace session and utilization time calculation
get wrong.

Issue #3842
2020-10-09 13:33:36 +02:00
Alexander Boettcher
99fa203673 nova: add migration support for global threads
Fixes #3842
2020-10-09 13:33:36 +02:00
Martin Stein
1b41d9db90 base: remove alarm library from base
Ref #3884
2020-10-09 13:33:36 +02:00
Martin Stein
c1d0179194 dde_rump: move private headers to src/include
Ref #3884
2020-10-09 13:33:36 +02:00
Martin Stein
04463806a8 dde_rump: remove unused rump_cgd
Ref #3884
2020-10-09 13:33:36 +02:00
Martin Stein
af01370cc1 run/rump_fat: raise ram quota
Ref #3884
2020-10-09 13:33:35 +02:00
Martin Stein
4eb4bd6f96 trace_logger: warn on multiple buffer wraps
Ref #3884
2020-10-09 13:33:35 +02:00
Christian Prochaska
d2d74cc5fa tool chain: fix build error on Ubuntu 20.04 (GCC 9)
Fixes #3899
2020-10-09 13:33:35 +02:00
Josef Söntgen
f53df495db libc: provide 'sys/soundcard.h' header file
Issue #3891.
2020-10-09 13:33:35 +02:00
Josef Söntgen
f3268cade6 libc: split ioctl method
Use one ioctl method for each type of I/O control because by now the
general method will become increasingly long.

Fixes #3890.
2020-10-09 13:33:35 +02:00
Josef Söntgen
1a54ee895e vfs: use compound ioctl in Block-VFS plugin
Instead of using the old 'ioctl' Vfs::File_io_services API implement
the I/O control functionality in a buch of files. This is similar to
the terminal-VFS plugin.

Fixes #3889.
2020-10-09 13:33:35 +02:00
Josef Söntgen
27d4cb871f libc: use property files for block ioctl
Like already done for terminal I/O controls use collect the information
by reading property files instead of using the old VFS ioctl interface.

Fixes #3888.
2020-10-09 13:33:35 +02:00
Josef Söntgen
2312ad35dd libc: match ioctl request type to contrib type
There is a type mismatch as in the FreeBSD contrib code the type of the
request is 'unsigned long'. So far, only I/O controls where the request
falls into the signed range where used and this was not a problem.

Some of the SNDCTL requests, however, have the bit set.

Fixes #3887.
2020-10-09 13:33:35 +02:00
Christian Prochaska
85a84f5042 qt5: generate enter events related to popup menus
Fixes #3894
2020-09-18 15:23:45 +02:00
Sebastian Sumpf
0fd979b147 imx8_fb_drv: make 'Capture' constructible
Reconstruct capture connection on config update in order to receive
update of complete screen data from GUI session.

fixes #3878
2020-09-18 15:21:10 +02:00
Christian Helmuth
ad595d2701 sculpt: version 20.09 2020-09-18 15:20:18 +02:00
Christian Helmuth
f6337a6446 depot: update recipe hashes 2020-09-18 14:04:56 +02:00
Stefan Kalkowski
f1b3e826d5 sculpt: update building section of sculpt README 2020-09-18 14:04:56 +02:00
Alexander Boettcher
2afba3c137 driver_manager: provide more memory to boot_fb
Fixes #3896
2020-09-18 14:04:56 +02:00
Norman Feske
e0d9a04f67 libc: resolve circular dependency in fork
This patch is a follow-up for the commit "libc: use monitor for fork".
It removes the use of the monitor mechanism from the
'Local_clone_service::close' RPC function because the fork_ep must stay
responsive for the destruction and creation of 'Child' objects.

Issue #3874
2020-09-18 14:04:56 +02:00
Christian Helmuth
c59c266afc depot: update recipe hashes 2020-09-17 14:23:14 +02:00
Norman Feske
3e83b4b39e Update Sculpt documentation for version 20.08 2020-09-17 14:01:19 +02:00
Stefan Kalkowski
d7eb174c88 muen: fix building on modern devel distros
* Use python2 interpreter not available by default explicitely
* Update ada-bfd binding library to meet binutils-dev >= 2.34
2020-09-17 10:14:07 +02:00
Stefan Kalkowski
c48b3ca16f okl4: use python2 explicitely in elfweaver tool
Fix #3892
2020-09-17 10:14:07 +02:00
Norman Feske
951409f14b intel_fb: reinit capture session on mode change
The current version of the driver leaves the screen in a black state
after a mode change, e.g., when connecting an external display.
With this patch, the framebuffer content is fetched for the entire
screen after a mode change. Thanks to Sebastian Sumpf for investigating.

Issue #3878
2020-09-17 10:14:07 +02:00
Norman Feske
2075b119ac sculpt: usability tweaks in popup dialog
- Show "..." for resource-assignment menu entry because it leads
  to a sub menu.

- Avoid dialog changes when clicking on "Add component" while a
  routing or resource dialog is unfolded.
2020-09-17 10:14:07 +02:00
Norman Feske
0d61029d7e depot_deploy: move affinity to <affinity> sub node
The initial implementation of the affinity configuration in
"depot_deploy: support affinity configuration" added the affinity
location attributes to the <start> node of the deploy config. This patch
moves the information into a dedicated <affinity> sub node as done by
the init configuration. So the context of the attributes 'xpos', 'ypos',
'width' and 'height' becomes clear.

It also fixes a usability issue in Sculpt that occurred during testing:
When configuring multiple components with custom affinities, the
resources dialog of later components would wrongly display the state of
earlier components instead of displaying the fresh (default) state. The
resulting configuration would then not match the displayed information.
This is fixed by resetting the dialog state.

As another minor cosmetic change, the patch adds a line break in front
of copied <config> or <heartbeat> nodes.

Issue #3597
2020-09-17 10:14:07 +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
c0f9f2c6d7 sculpt: restore toggleable format button
With the move of the storage-management dialogs to the graph in Sculpt
version 20.02, the ability to unselect the buttons for destructive
storage operations such as format or expand disappeared. This patch
restores the original behavior.
2020-09-17 10:13:21 +02:00
Alexander Boettcher
f0f8d0e0ca base: add affinity to session creation request
Fixes #3838
2020-09-17 10:13:21 +02:00
Norman Feske
5dc8e330b6 sculpt: add button for restarting a component
Fixes #3885
2020-09-17 10:13:21 +02:00
Stefan Kalkowski
fcb0ca305c dde_linux: don't zero out framebuffer of imx8
* On this platform there is no need to zero out the framebuffer
  dataspace, which is already blanked by core
* But it might happen that the GUI server is sending a capture
  event before the zero out happens. Thereby screen content can get
  lost

Fix #3878
2020-09-17 10:13:21 +02:00
Stefan Kalkowski
fd161cd814 dde_linux: turn imx8_fb_drv into Platform client
* Requests its I/O resources and clock settings from the platform driver

Fix #3877
2020-09-17 10:13:21 +02:00
Stefan Kalkowski
5913cdae89 os: fix clock settings for i.MX 8M platform_drv
* Fixes faulty algorithm in fractional pll rate calculation
* Enables clocks that are set as reference clock to prevent system freeze
* Enables/disables root clocks of gates implicitely

Fix #3876
2020-09-17 10:13:21 +02:00
Norman Feske
8dde14f93e bash: prevent aliasing of libc's 'getenv'
By default, bash brings its own version of 'getenv', named exactly like
the libc function. This becomes a problem in fork/execve scenarios if
the dynamic linker resolves 'getenv' to the bash binary instead of the
libc.

This patch fixes the generate step of the genodians.org scenario.

Issue #3882
2020-09-17 10:13:20 +02:00
Norman Feske
f5dc71ed35 os: remove obsolete single_session_service.h 2020-09-17 10:13:20 +02:00
Christian Prochaska
e0ca250232 libc: support detached pthreads
Fixes #3880
2020-09-17 10:13:20 +02:00
Christian Helmuth
75ba52a52b libc: remove mutex parameter from monitor
Issue #3874
2020-09-17 10:13:20 +02:00
Christian Helmuth
a0a112ffe7 libc: use monitor for fork
Issue #3874
2020-09-17 10:13:20 +02:00
Christian Helmuth
a891b3832c libc: use monitor for pthread join/cancel
Issue #3874
2020-09-17 10:13:20 +02:00
Christian Helmuth
d6f89b285d libc: use monitor for sleep()
Issue #3874
2020-09-17 10:13:20 +02:00
Norman Feske
e9a3f0f095 libc: use monitor for select
This patch simplifies the control flow within the libc kernel by
facilitating the monitor mechanism for the implementation of 'select'.

Issue #3874
2020-09-17 10:13:20 +02:00
Christian Helmuth
52a6cf1412 libc: support creat() 2020-09-09 16:57:34 +02:00
Norman Feske
aeeade53f9 sculpt: don't restart menu view if font changes
This patch enables the menu view's new ability to respond to font-size
changes in Sculpt so that the menu view instanced no longer need to be
restarted whenever the screen resolution or font size is changed.

Fixes #3875
2020-09-09 16:57:34 +02:00
Norman Feske
c05f716478 menu view: respond to font configuration changes
Issue #3875
2020-09-09 16:57:34 +02:00
Norman Feske
4aca94b08b vfs/ttf: support for watching font-size changes
This patch allows the use of the VFS watch mechanism for the glyph file
of the TTF VFS plugin so that clients become able to dynamically respond
to font reconfigurations.

Issue #3875
2020-09-09 16:57:34 +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
Norman Feske
7de2b040f8 vfs: deliver ACKs after config change
This is needed to enable VFS plugins to notify VFS clients about file
changes that depend on the plugin configuration, E.g., whenever the vfs_ttf
plugin responds to a font-size change, it generates a watch notification
for the glyphs file. Since the change is independent from I/O, we need
to manually call 'handle_io_progress'.
2020-09-09 16:57:34 +02:00