* The vm86 code or the code running in virtual 8086 mode may clobber the
%fs register that we use for the CPU dependent thread local storage
(TLS). Previously the vm86 code would simply restore %fs on exit, but
this doesn't always work. If the thread got unscheduled while running
in virtual 8086 mode and was then rescheduled on a different CPU, the
vm86 exit code would restore the %fs register with the TLS value of
the old CPU, causing anything using TLS in userland to crash later on.
Instead we skip the %fs register restore on exit (as do the other
interrupt return functions) and explicitly update the potentially
clobbered %fs by calling x86_set_tls_context(). This will repopulate
the %fs register with the TLS value for the right CPU. Fixes#8068.
* Made the static set_tls_context() into x86_set_tls_context() and made
it available to others to faciliate the above.
* Sync the vm86 specific interrupt code with the changes from hrev23370,
using the iframe pop macro to properly return. Previously what was
pushed in int_bottom wasn't poped on return.
* Account for the time update macro resetting the in_kernel flag and
reset it to 1, as we aren't actually returning to userland. This
didn't cause any harm though as only the time tracking is using that
flag so far.
* Some minor cleanup.
Apparently I should have done a complete rebuild after moving
directories.h from headers/private/libroot to .../system, since a lot of
stuff didn't build anymore.
The implementation is temporary. Currently it reads through the packages
in the respective packages directory and checks against the package
links. Once package activation is tracked explicitly we'll use the
activation file/directory.
A BPackageContentHandler subclass that initializes a BPackageInfo from
the read package attributes. Pulled out of RepositoryWriterImpl's
PackageContentHandler.
* Remove InitCheck() and the initializing constructor.
* Rename PackageCount() to CountPackages().
* Use BOpenHashTable instead of HashMap for the internal PackageMap.
* Allow multiple packages with the same name. Equally named packages are
in a singly linked list after the first package with that name.
* Add an Iterator inner class and a GetIterator() method, so one can now
iterate through the packages in the repository.
The attribute is intended for simplifying package building. The
package's install path will be used for the package's .self package
symlink, allowing installation to a temporary directory when building
the package.
* AVLTreeMap::_GetKey(): Change return type from const Key& to Key, so
the strategy can do that as well and doesn't have have a Key object in
the node.
* Fix the Auto strategy: It was using the undefined _GetKey() instead
of GetKey().
Extended policy by IndexIteratorSuspend() and IndexIteratorResume()
methods that are invoked for the index iterator by Query::GetNextEntry()
after entering respectively before exiting.
both:
* Add Previous()/Next().
* Add Insert() version that returns a Node* instead of an Iterator.
* Add Remove() version that takes a Node* instead of a key.
TwoKeyAVLTree:
* Add GetIterator() version that takes an additional Node*, i.e.
initializing an iterator to point to the node.
* Add Iterator::CurrentNode().
This is a tree implementation with elements with primary and secondary
key. The code is a cleaned up version of ramfs's implementation. ramfs
doesn't use this version yet.
Add flags parameter to BPackageWriter::Init() (and the private
implementation classes) to indicate that an existing package file shall
be updated instead of created. Currently that always happens in-place.
When compression doesn't save space, using it nonetheless results in a
file that the reader complains about. So we fall back to writing an
uncompressed package attributes section in such a case.
The same still needs to be done for the TOC section.
* Add hooks HandleSectionStart() and HandleSectionEnd(). They are
invoked to bracket package file section, so the handler can
discriminate which section the attributes belong to.
HandleSectionStart() features a return parameter _handleSection, which
allows to handler to pick which sections it wants to handle.
* "package dump" does now print the section names.
If a FD is specified, instead of using the file with the given the FD is
used. Allows for adding entries without first copying them into the
directory structure.
This makes opening symlinks work universally in the build system tools.
Two mechanisms have been implemented, both of which don't always work.
The first is remapping via preprocessor macros. This fails where equally
named methods are used (e.g. STL fstream::open()). The other is using
hidden functions in the new libroot_build_function_remapper.a that is
linked into everything that is linked against libroot_build.so. This one
fails for functions that are defined inline in headers (Linux/glibc does
that). Together they seem to cover our build system needs ATM.
To avoid a clash with the regular version or an extra attribute level we
use the "package:provides.compatible" package attribute instead of
"package:version.major".
