Systemd will cleanse the system of running processes
in the hand over from the initrd to the main root filesystem,
and at shutdown.
In both cases we want to keep on chugging, so we tag ourselves
in a way that systemd won't kill us.
See http://www.freedesktop.org/wiki/Software/systemd/RootStorageDaemons
The drm driver tells us the minimum dimensions it supports
for buffer objects. We use this minimum for creating a
small temporary 32-bit buffer to test if 32-bit buffers
are supported.
Unfortunately, some drivers neglect to fill in
min_width/min_height and then we try to allocate a buffer
with 0 sized dimensions.
This commit checks for min_width/min_height being 0, and then
bumps them to 1.
Minor changes to initial patch by Ray Strode.
In some cases, clients may need a way to ensure that all queued
messages have been flushed and are sent to the daemon
(before, for instance, exiting).
This commit adds an API to block until the outgoing request queue is
empty.
This commit adds four keyboard shortcuts to the developer
documentation that were found from reading the source:
Esc: Toggle between system console and plymouth boot animation.
Ctrl-V: Toogle verbose mode on and off.
Ctrl-U or Ctrl-W: erase a line
This commit starts to document plymouth to help
new contributors get into the code.
The aim of the document is to provide useful information,
such as the overall architecture, the most
important data structures, and howto recipes for
typical user cases, like debugging.
The document is explicitly not meant to be detailed API documentation.
In the future, that type of documentation may be provided with gtk-doc
style annotations.
The documentation is written in asciidoc
(http://www.methods.co.nz/asciidoc/) and is therefore easily readable as
its ascii text and can also be translated into more rich formats
(like HTML).
For example, to get an HTML version of the document:
yum install asciidoc (or equivalent for your distribution)
cd docs
make development.html
When the computer is progressing through its boot up process, plymouth
calls into the splash plugin's on_boot_progress function at regular
intervals with increasing values for "percent_done". At some point, it
gets to 90% done, and that's when two-step begins its finishing
animation sequence. As soon as this sequence finishes, two-step pulls
its stop trigger, which
1) sets its "is_idle" flag to true and
2) pulls the core plymouthd code's idle trigger, to notify that
code that it's at a good animation frame to quit (if the core
plymouthd code has an idle trigger set up)
During the boot process, the user may need to enter a password
(the "plymouth ask-for-password" command). When that happens,
the splash waits for the user to enter a password, but boot progresses
in the background.
If the user then enters a password, the boot animation restarts again
(from the display_normal function). This restarting of the boot
animation will cause the "is_idle" flag of the splash to get set back
to false.
Later when plymouthd wants to quit, it calls the become_idle function
of the splash plugin. That function notices "is_idle" is false, and
the stop_trigger is not NULL. The function isn't suited to work
with this combination, and so at this point the splash never
tells the code daemon code it's idle.
This commit changes on_boot_progress to return before looking at
percent_done, if the user is getting asked a question. This way
the stop_trigger won't get created prematurely, and is_idle won't
get out of sync.
https://bugs.freedesktop.org/show_bug.cgi?id=49355
Most distributions no longer use this transition, which relies
on plymouth quitting before X starts.
For clarity, rename the #define to include the word DEPRECATED
Since around 2.6.39, the kernel has offered a generic ioctl interface
for modesetting (the KMS 'dumb' interface). This interface is now
provided by most all of the modesetting drivers.
Adding support for this interface means that plymouth will automatically
gain support for new modesetting drivers going forward.
This commit adds that support. Some changes made by Ray Strode.
A ply_label can now be alignment with ply_label_set_alignment()
taking one of PLY_LABEL_ALIGN_LEFT, PLY_LABEL_ALIGN_CENTER, or
PLY_LABEL_ALIGN_RIGHT.
This alignment is made within a horizontal box which width can be set with
ply_label_set_width().
Both functions are now used by the plugin "two-step" to make sure, that
the prompt for "ask-for-password" gets centered on the screen. Previously
the prompt started in the middle of the screen and was cropped at the right
border of the screen (fixes bz #681513). This lead to unreadable prompts
for disk encryption.
The previous commit tries to create a 32bpp 1x1 dummy buffer
to know whether or not the modesetting driver can handle
our needs. It's concievable (though not realized in practice) that
the driver could support our needs fine, but not support buffers
as small as 1x1.
This commit uses the queried minimum buffer dimensions for the dummy
buffer instead of assuming 1x1.
Now that more and more hardware is getting kms support,
we need to be more careful about what hardware we try to
run on. Cirrus cards can't make 32bpp framebuffers, which
is all we support in the drm renderer.
This commit tries to create a small buffer up front, just
to see if the driver will allow it. If the driver chokes,
then we bail and fall back to the /dev/fb renderer, which
is more tolerant of aging hardware.
commit 6baab7a8f8 was the
result of Ray Strode splitting part of a larger patch
out. The splitting and subsequent modifications weren't
completely right.
This commit contains some fixes to address the problems
with those changes.
This commit adds plymouth.ignore-serial-consoles kernel command
line for OLPC to use.
Eventually, we'll support multiple plugins at once, and we can
run details on the serial console and e.g. two-step on the main
console and then this argument won't be needed.
commit e810532e5d contained
a function called add_consoles_from_file that was a badly
modified version of add_consoles_from_kernel_command_line
changed to read from /sys/class/tty/console/active instead
of /proc/cmdline.
Previously, if we had console=SOMETHING on the kernel command
line, then we would assume the user is using serial consoles
and force details. This translated to if add_consoles_from_file
finds any devices in /sys/class/tty/console/active force details.
Of course, /sys/class/tty/console/active contains tty0 even when
the user doesn't specify console=tty0 on the kernel command line,
so this broke show-splash calls.
This commit changes the logic bit. We now only force details if
there is some console in the list that isn't tty0.
This restores show-splash functionality.
add_consoles_from_file was a little fast and loose in its parsing.
This commit makes it a little more fault tolerant.
Patch split from larger patch, and modified by Ray Strode.
If ply_event_loop_handle_timeouts() is called before the events returned
by epoll_wait() are given references, a timeout handler can prematurely
free an event source by calling ply_event_loop_stop_watching_fd leading
to crashes and other undefined behaviour since
ply_event_loop_process_pending_events() dispatches the event sources
returned by epoll_wait() after the timeouts have been handled.
Thanks to cjwatson for a simpler solution to my original fix.
Minor changes by Ray Strode.
https://bugs.freedesktop.org/show_bug.cgi?id=28548
Previously OLPC used --kernel-command-line to make plymouth
ignore specific consoles. That no longer works, now that we
read from /sys/class/tty/console/active
This commit adds an escape hatch, a way to get back to the old
behavior.
add_consoles_from_file suffers from a sever case of
cut-and-paste-itis. This commit renames its variable
"remaining_command_line" to "remaining_file_contents" so that
the variable name actually makes sense.
It did not terminate at space so the log file to use was not
properly defined and any additional kernel command line args were
added to the end of the file name.
The /dev/fb symlink doesn't get created with any recent udev version.
dracut puts it in place "by hand" before starting plymouthd, which is
why things aren't broken in configurations that use dracut's plymouth
module.
Update the default device path so that it works out-of-the-box in
other setups too.
This reverts commit 841068ba12.
That commit made plymouthd hang around until the last round
of slayings by init to keep the splash screen up as long as
possible.
That adds 5 seconds to shut down in some cases, though, so
is wrong. Instead we need a solution that keeps the splash
around after plymouth exits.
See http://bugzilla.redhat.com/744932
We currently read the list of available consoles from the
kernel command line.
This isn't the most reliable way to do things.
This commit changes the code to read
/sys/class/tty/console/active
instead.
It's important we close all terminals in the shutdown path,
so they all get unlocked and returned to cooked mode.
Previously, we would just close the local console terminal,
which meant other terminals would end up left in a broken state.
We call the add_display_and_keyboard_for_terminal function for
every console passed into the kernel command line and once for
/dev/tty1 if no console line is passed in. This function
repeatedly, reinitializes state->terminal with whatever
terminal is passed in each time its called.
This commit changes add_display_and_keyboard_for_terminal to not
touch state->terminal and instead makes the callers do it
(if appropriate)
Right now we pass a terminal to the constructor of the boot splash
object. This terminal is used for going to KD_TEXT mode when
ctrl-T is tapped or when hiding the splash.
We only need to do this, though, when:
1) we're running on a local vt
2) we're showing graphics
the boot-splash code has all the knowledge it needs to figure these
two things out on its own, and furtermore it already can figure out
which terminal is the relevant one without being told at construct
time.
This commit adds those smarts to the boot splash code.
check_for_consoles has another bug (surprised?) where it would
jump too many characters forward if the command line has
console=tty0 in it, since tty0 is transparently changed to /dev/tty1.
