This is a very simple heap implementation that allocates memory so that
the end of each allocation always coincides with a page end and is
followed by a guard page which is marked non-present. Out of bounds
access (both read and write) therefore cause a crash (unhandled page
fault).
Note that this allocator is neither speed nor space efficient, indeed it
wastes huge amounts of pages and address space so it is quite easy to
hit limits. It is intended as a pure debug feature.
* Fixes #7986 - behavior of Print command fixed to be consistent
with other application, like StyledEdit. This change
display the print job settings dialog instead of "Printing
was cancelled" alert;
* Fixes #6998 - the path to storing windows settings changed from
~/config/settings/Terminal_windows to ~/c/s/Terminal/Windows;
This patch was created during GCI 2011 by doctorkohaku.
Thanks for the contribution!
This adds a pair of functions vm_prepare_kernel_area_debug_protection()
and vm_set_kernel_area_debug_protection() to set a kernel area up for
page wise protection and to actually protect individual pages
respectively.
It was already possible to read and write protect full areas via area
protection flags and not mapping any actual pages. For areas that
actually have mapped pages this doesn't work however as no fault, at
which the permissions could be checked, is generated on access.
These new functions use the debug helpers of the translation map to mark
individual pages as non-present without unmapping them. This allows them
to be "protected", i.e. causing a fault on read and write access. As they
aren't actually unmapped they can later be marked present again.
Note that these are debug helpers and have quite a few restrictions as
described in the comment above the function and is only useful for some
very specific and constrained use cases.
They can be used to mark pages as present/non-present without actually
unmapping them. Marking pages as non-present causes every access to
fault. We can use that for debugging as it allows us to "read protect"
individual kernel pages.
* rename encoder_isexternal to encoder_is_external
* add encoder_is_dp_bridge call for special DP cases
* add initial get_dp_link_clock, hard code a guess for now
* take external DP encoders into consideration when making
pixel clock adjustments
The change to this initial index for safemode was brought in with the
flat import of the package manager branch in 323b654 where presumably
more paths were used. With this value selecting either just safe mode
or disable user add-ons would lead to no input_server add-ons being
loaded at all, leading to a system without input.
* instead of in /boot/home/config/settings/be, the compatibility
link has to live directly in the config folder, as otherwise
it doesn't help compatibility-wise at all ;-)
* Apply reworked version of the patch from "RQ" in #8156 that adds a "live in the deskbar" menu item.
* Also added a "Remove replicant" menu item for the replicant case.
Package management will move the directory from common/etc to
common/settings/etc. The kernel side change that sets up the etc symlink
in the rootfs was already commited, everything still installs into the
old dir however. This symlink makes things that depend on /etc work for
now and can be removed once the files aren't populated to the old place
anymore.
* The about-like screen saver info has bold styling of heading part
of the information string string. Localizing this string has
provoked partial styling and visual "corruption-looking" glitches.
Getting the object slab does a hash lookup which needs to be protected
by the cache lock. Otherwise the hash table may be resized or otherwise
modified while we do the lookup, leading to errors.
* Added possibility to localize projects driven by Jamfile-engine in
the easy way. Targets "catkeys", "catalogs", "catlogsinstall",
"bindcatalogs" introduced.
* This contribution was made by Peter Polacik during working on GCI 2011
tasks. Thank you!
