Add or fix options to control static and dynamic configuration. Keep
the default of scteken, but default to statically configuring all available
emulators (now 3 instead of 1).
The dumb emulator is almost usable. libedit and libreadline handle
dumb terminals perfectly for at least shell history. less(1) works
as well as possible except on exit. But curses programs make messes.
The dumb emulator has strange color support, with 2 dumb colors for
normal output but fancy colorization for the cursor, mouse pointer and
(with a non-dumb initial emulator) for low-level console output.
Using the sc emulator instead of the default of scteken fixes at least
the following bugs:
- NUL is a printing character in cons25 but not in teken
- teken doesn't support fixed colors for "reverse" video.
- The best versions of sc are about 10 times faster than scteken (for
printing to the frame buffer). This version is only about 5 times
faster.
Fix configuration features:
- make SC_DFLT_TERM (for setting the initial emulator) a normal option.
Add configuration features:
- negative options SC_NO_TERM_* for omitting emulators in the static config.
Modules for emulators might work, but I don't know of any
- vidcontrol -e shows the available emulators
- vidcontrol -E <emulator> sets the active emulator.
Advertise this by changing the defaults to mostly red. If you don't like
this, change them (almost) back using:
vidcontrol -c charcolors,base=7,height=0
vidcontrol -c mousecolors,base=0[,height=15]
The (graphics mode only) mouse cursor colors were hard-coded to a black
border and lightwhite interior. Black for the border is the worst
possible default, since it is the same as the default black background
and not good for any dark background. Reversing this gives the better
default of X Windows. Coloring everything works better still. Now
the coloring defaults to a lightwhite border and red interior.
Coloring for the character cursor is more complicated and mode
dependent. The new coloring doesn't apply for hardware cursors. For
non-block cursors, it only applies in graphics mode. In text mode,
the cursor color was usually a hard-coded (dull)white for the background
only, unless the foreground was white when it was a hard-coded black
for the background only, unless the foreground was white and the
background was black it was reverse video. In graphics mode, it was
always reverse video for the block cursor. Reverse video is worse,
especially over cutmarking regions, since cutmarking still uses simple
reverse video (nothing better is possible in text mode) and double
reverse video for the cursor gives normal video. Now, graphics mode
uses the same algorithm as the best case for text mode in all cases
for graphics mode. The hard-coded sequence { white, black, } for the
background is now { red, white, blue, } where the first 2 colors can
be configured. The blue color at the end is a sentinel which prevents
reverse video being used in most cases but breaks the compatibility
setting for white on black and black on white characters. This will
be fixed later. The compatibility setting is most needed for mono modes.
The previous commit to syscons.c changed sc_cnterm() to be more careful.
It followed null pointers in some cases. But sc_cnterm() has been
unreachable for 15+ years since changes for multiple consoles turned
off calls to the the cnterm destructor for all console drivers. Before
them, it was only called at boot time. So no driver with an attached
console has ever been unloadable and not even the non-console destructors
have been tested much.
and repurposing "blink". Improve accuracy of documentation of historical
mistakes and other bugs.
"blink" now means "set the blink attribute for the target(s)" instead of
"set the blink attribute and clear other attributes [and control flags]".
It was even more confusing to use "blinking" for the single attribute to
keep the old meaning for "blink".
"destructive" is not as historically broken or gone as the previous version
said.
The bugs involving resetting from defaults are now understood and partly
documented (the defaults are mis-initialized).
capabilities.
Most of the capabilities (all of the arcane ones) were in FreeBSD-2.0.5,
but were harder to use then, and vidcontrol didn't try. FreeBSD-4.1.0
added per-vty support, fixed the destructivness of the "destructive"
cursor, and improved APIs. Start using the new APIs, support all of
their capabilities, and document all of the capabilities and some of
the historical mistakes.
vt doesn't support any of this before or after the change.
Fix minor unrelated bitrot in the usage message for the syscons case.
to be used with eg "vidcontrol -s".
Reviewed by: emaste@
MFC after: 1 month
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D4968
To restore the default font using vidcontrol(1), use the "-f" flag
without an argument:
vidcontrol -f < /dev/ttyv0
PR: 193910
Differential Revision: https://reviews.freebsd.org/D971
Submitted by: Marcin Cieslak <saper@saper.info>
Reviewed by: ray@, emaste@
Approved by: ray@
MFC after: 1 week
This will make it more easy for people to experiment with TERM=xterm.
Instead of echoing these strange escape sequences, I can just instruct
them to run `vidcontrol -T xterm'.
24, and 32 bit modes. To use that, syscons(4) must be built with
the compile time option 'options SC_PIXEL_MODE', and VESA support (a.k.a.
vesa.ko) must be either loaded, or be compiled into the kernel.
Do not return EINVAL when the mouse state is changed to what it already is,
which seems to cause problems when you have two mice attached, and
applications are not likely obtain useful information through the EINVAL
caused by showing the mouse pointer twice.
Teach vidcontrol(8) about mode names like MODE_<NUMBER>, where <NUMBER> is
the video mode number from the vidcontrol -i mode output. Also, revert the
video mode if something fails.
Obtained from: DragonFlyBSD
Discussed at: current@ with patch attached [1]
PR: kern/71142 [2]
Submitted by: Xuefeng DENG <dsnofe at msn com> [1],
Cyrille Lefevre <cyrille dot lefevre at laposte dot net> [2]
implemented using a new VT_LOCKSWITCH ioctl. Although it is possible
to implement something like this by VT_SETMODEing to VT_PROCESS and
never releasing the vty, that method has a number of downsides, the
biggest of which is that some program has to stay resident for the
lock to be in effect.
Reviewed by: roam, sheldonh
case use size of the currently displaying font as a suffix. For example,
when the when the size of the currently displayed font is 8x8 the
following command will load koi8-r-8x8.fnt.
# vidcontrol -f koi8-r
MFC after: 2 weeks
1) Removed the low-level (unneeded in this context) details on
escape sequences that are already documented in screen(4).
2) Removed whitespace at EOL.
3) Removed the garbage from previous revision.
Avoid using parenthesis enclosure macros (.Pq and .Po/.Pc) with plain text.
Not only this slows down the mdoc(7) processing significantly, but it also
has an undesired (in this case) effect of disabling hyphenation within the
entire enclosed block.
the following fixes had been made:
- check the size of the font being loaded and compare it with possible sizes
to minimise possibility of loading something that is not a fontfile at all
and turning console screen into garbage;
- prevent buffer overflow (and coredump as a result ) when loading valid
uuencoded file with size that exceeds allocated buffer;
- correct and improve several error messages.
Approved by: -audit, -hackers (silently)
