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attempts to keep them that way. The bg brightness bit is interpreted as blinking in some modes, but it would barely be useful to disallow setting it when it would give blinking in code which knew when that is. The old code mostly knew this wrong, and added handling errors. It is in fact impossible to know, since future mode switches may change the meaning of the bit many times on the screen and in history. Old versions of vidcontrol disallowed bg color numbers >= 8 in all cases. This is very VGA/syscons-centric. Syscons uses the VGA defaults of blinking fg instead of bright bg in text mode and bright bg in graphics mode. On VGA, this is very easy to toggle at any time, and vt blows away the VGA text mode default at boot time. r146736 changed this to try to allow bg color numbers in graphics mode only. This is even more VGA/syscons-centric, and there are many bugs in this, and many nearby bugs in the parser. These are increased or decreased by differences and bugs in vt and teken. Perhaps the most obvious bug was that almost any vidcontrol command which changes any color or the mode causes an error if the initial fg color is bright. E.g., in syscons text mode, after "vidcontrol lightwhite" to make the fg bright, another "vidcontrol lightwhite" is rejected and buggy fixup code changes the fg to white. This is because the bright fg color creates a bright bg color for the phantom reverse video attribute, so was rejected. (The reverse video attribute is phantom because teken ignores the user's setting of it and simply reverses the fg attributes to create the bg attributes. Sometimes some layer masks off the brightness/blinking bit, but not here.) Perhaps the next most obvious one was that "vidcontrol lightgreen lightblue" was misparsed as 2 settings of the fg instead of 1 setting of the fg and 1 invalid setting of the bg. This is because the parser supports an undocumented syntax with many parsing bugs (an ambiguity gives this one). I recently fix bugs in teken that broke setting of bright fg's and bg's in the normal way. This gave more settings of then, so the old bugs showed up more often. |
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|---|---|---|
| bin | ||
| cddl | ||
| contrib | ||
| crypto | ||
| etc | ||
| gnu | ||
| include | ||
| kerberos5 | ||
| lib | ||
| libexec | ||
| release | ||
| rescue | ||
| sbin | ||
| secure | ||
| share | ||
| sys | ||
| targets | ||
| tests | ||
| tools | ||
| usr.bin | ||
| usr.sbin | ||
| .arcconfig | ||
| .arclint | ||
| COPYRIGHT | ||
| LOCKS | ||
| MAINTAINERS | ||
| Makefile | ||
| Makefile.inc1 | ||
| Makefile.libcompat | ||
| ObsoleteFiles.inc | ||
| README | ||
| README.md | ||
| UPDATING | ||
FreeBSD Source:
This is the top level of the FreeBSD source directory. This file
was last revised on:
FreeBSD
For copyright information, please see the file COPYRIGHT in this directory (additional copyright information also exists for some sources in this tree - please see the specific source directories for more information).
The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree. See build(7) and http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html for more information, including setting make(1) variables.
The buildkernel and installkernel targets build and install
the kernel and the modules (see below). Please see the top of
the Makefile in this directory for more information on the
standard build targets and compile-time flags.
Building a kernel is a somewhat more involved process. See build(7), config(8), and http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html for more information.
Note: If you want to build and install the kernel with the
buildkernel and installkernel targets, you might need to build
world before. More information is available in the handbook.
The kernel configuration files reside in the sys/<arch>/conf
sub-directory. GENERIC is the default configuration used in release builds.
NOTES contains entries and documentation for all possible
devices, not just those commonly used.
Source Roadmap:
bin System/user commands.
cddl Various commands and libraries under the Common Development
and Distribution License.
contrib Packages contributed by 3rd parties.
crypto Cryptography stuff (see crypto/README).
etc Template files for /etc.
gnu Various commands and libraries under the GNU Public License.
Please see gnu/COPYING* for more information.
include System include files.
kerberos5 Kerberos5 (Heimdal) package.
lib System libraries.
libexec System daemons.
release Release building Makefile & associated tools.
rescue Build system for statically linked /rescue utilities.
sbin System commands.
secure Cryptographic libraries and commands.
share Shared resources.
sys Kernel sources.
tests Regression tests which can be run by Kyua. See tests/README
for additional information.
tools Utilities for regression testing and miscellaneous tasks.
usr.bin User commands.
usr.sbin System administration commands.
For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see:
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/synching.html