This reverts commit 2960780faa.
Sorry for the noise; I thought I'd run a compile but apparently it was
only a partial one.
It seems that the netboot core is linked into the main bootloader
no matter the build configuration, which means that since this one
function was called, the linker tried to resolve all the other symbols
from that static library. Which of course failed.
The NetStack.h header is currently not usable from C code. So while
net_stack_init() is called from platform code, we cannot call
net_stack_cleanup() from OpenFirmware's platform_start_kernel().
Thus call it directly from main()'s cleanup TODO, having assured
that the function is a no-op when no network stack was initialized.
Signed-off-by: Augustin Cavalier <waddlesplash@gmail.com>
The UDP service does not own the UDP sockets. When shutting down,
inform the bound sockets that the service is no longer available.
This allows subsequent method calls to error out cleanly.
Signed-off-by: Augustin Cavalier <waddlesplash@gmail.com>
Add a cleanup function net_stack_cleanup() that calls a new NetStack::ShutDown() method.
Make sure this method works even if the network stack was never initialized.
Signed-off-by: Augustin Cavalier <waddlesplash@gmail.com>
It is currently done in both ~EthernetService() and ~NetStack().
Since NetStack is where it's added and where an explicit accessor function is provided,
choose that location.
Signed-off-by: Augustin Cavalier <waddlesplash@gmail.com>
* With the amd64 architecture, the stack fault exception got a new
meaning: it is raised when an instruction tries to access a
non-canonical address, and the stack is referenced in the
instruction (e.g. by its addressing mode).
So unlike on x86, this is not a fatal exception and shouldn't
trigger a KDL -- instead, it is to be treated like a general
protection fault, terminating the team which caused it.
* Fixes#13744
For readers waiting in select() or simply in read(),
B_SELECT_DISCONNECTED notification didn't wake them anymore.
Now, cascade notifications to be sure to wake them, either
on POLLHUP, POOLERR/B_SELECT_ERROR or, at worst, from read().
See #7859 for details.
* Eventually BoardSetups and target boards will go away.
* Include all known fdt's in the mmc image
* This gets us closer to target board-less arm
* Changing hardware is as simple as plugging a new fdt
into u-boot's startup script.
* Drop my original rpi1 work. We're targetting ARMv7
minimum.
* gcc will emit 64-bit (_8) atomic functions on 32-bit
powerpc architectures. This stubs them out for now
with a warning.
* We could do more here, but i'm just getting PPC
bootstrapped to get the nightly builds going again.
* We could also just completely drop PPC.. but it was
pretty close pre-pm... so I'd hate to lose that work.
Both the user-mode syscalls.h and the kernel-mode one define it
as an int32, not a time_t, and as it's a timezone offset not
an actual time, there's no reason it needs to be one.
Various symbolic links (/bin, for example) in the root directory have
no read, write or execute permissions. This prevents non-privileved users
from logging in.
Signed-off-by: Augustin Cavalier <waddlesplash@gmail.com>
Fixes#13530.
The same wording was used for two unrelated things: using the VESA
driver, and forcing a specific resolution. Relabel the menu items to
make it clear that they are not related.
fixes#8887
Signed-off-by: Adrien Destugues <pulkomandy@pulkomandy.tk>
This allows the loader to skip BFS partitions that don't contain
a bootable system. Useful when you have a BFS data partition that
comes before the system partition when iterated over.
Currently, only the UEFI loader actually returns more than one
possible partition.
* This allows KPath to not allocate a buffer when initialized
without path.
* Added test cases for this.
* Added test for LockBuffer().
* Enhanced tests to allow building them in debug mode.
* Moved calling vfs_normalize_path() into own private method.
* Improved error codes; B_NO_MEMORY is now only returned if the
allocation actually failed.
* If used with LAZY_ALLOC, Path() and LockBuffer() are now allowed
to return a NULL path.
* Normalize() now returns the error code that vfs_normalize_path()
returns.
* Leaf() now returns "" instead of "/" for the root. It's not used
outside of KPath.
* Adapted RemoveLeaf() to deal with this correctly.
* "KPath = string" no longer changes the buffer size.
* Added missing operator tests for =, ==, and !=.
* IOBuffer::FreeVirtualVecCookie() did not put the last physical page
back. This was only an issue in case GetNextVirtualVec() wasn't
iterated through the end, for example in case of an error.
* Fixed the condition when to put back a physical page; the current
solution will also work with the generic page mapper implementation.
* This fixes the low hanging fruits of Ingo's comment in #5777.
* Both functions need to wait when encountering a busy vnode, in order
not to create a race condition in combination with get_vnode().
* This should fix both #5262, and #9839.
* I did not implement Ingo's suggestion to burden the file systems with
solving the problem for the following reasons:
- I think the file system interface should be as simple as possible.
- I can't think of a possible locking issue at least for BFS.
- The solution on the file system side would look pretty similar to
what the VFS already does or has to do (minus controlling the locking
directly), so it would cause quite a functional duplication.
* Solves #13388 and likely a bunch of other bug reports.
* While this *is* an issue that can potentially be serious,
there really isn't a risk of data loss or a system
instability, only broken PCI devices. Show warning and
keep going.
Signed-off-by: Adrien Destugues <pulkomandy@pulkomandy.tk>
This patch was never applied after GSoC 2012. Rebase the parts that
still apply so we can close the ticket.
Fixes#9490.
* Whilst in WcharToMultibyte, we correctly convert our UTF-32
wchar characters to multibyte, the same wasn't done in
MultibyteToWchar. Now, if we detect a leading surrogate,
we'll re-read the multibyte sequence with space for a UTF-16
pair, which allows U16_GET to correctly convert the UTF-16
byte sequence into the needed UTF-32 codepoint.
Fixes#13184.
* We don't have kernel/userspace access to UEFI at this point
either, and with some firmware, if we don't keep the
runtime memory identity mapped, then the loader dies. This
will fix booting on such machines, and shouldn't have any
impact on already working machines.
* Maintain a list of all MESSAGING_DEVICE_PATH and
MEDIA_DEVICE_PATH handles, so we can avoid adding devices
multiple times.
* Split up platform_add_boot_device() into separate functions
for better readability (add_cd_devices, add_boot_device_for_image,
etc.).
* This is useful for UEFI, as we can then add the device that
contains the UEFI loader, as well as all CD devices. As a
result, if the device with the UEFI loader doesn't contain
a bootable BFS partition, it will then attempt the same for
CD devices.
This allows me to find and boot disks and cds(*)
platform_add_boot_device tries to find the disk of the EFI partition
As on other platforms if boot disk isn't found platform_add_block_devices
will be called.
platform_add_block_devices will find all block devices that arn't partitions as
they are handled by Haiku already.
Currently first found suitable partition will be selected.
TODO:
* pass in partition UUID's as boot-loader arg to setup boot for
any partition.
* Better cd detection
* Better disk_identifier
*) vfs_boot.cpp is very restrictive when it comes to booting cds.
It either do very Anyboot check where boot partition should be at offset 0,
which isn't true for EFI. In my case it's not even on that disk.
Or it only allow data session partition types.
This is currently failing as the Anyboot partition type is BFS.
This is an implementation of pthread barriers pursuant to the relevant specification.
Barriers are essentially a special case of conditional variables,
such that all threads waiting on one are woken up when the number of
waiters reaches a number provided at the initialization of the barrier.
In view of that, this implementation mimics the implementation of pthread_cond,
except it is more specialized and self-contained.
Signed-off-by: Jérôme Duval <jerome.duval@gmail.com>
* Fixes problems with setting the partition name after uninitializing
a partition in DriveSetup. Previously, UninitializeJob() was
followed by SetStringJob(), but the kernel was updating the
change counter for the parent partition when uninitializing a
partition, leading to SetStringJob() having an incorrect change
counter for the parent partition. Now the parent change counter
will be correct when SetStringJob() runs.
* Ingo rightly noticed that the defer_signals counter is reinitialized on
thread's user area creation. Setting the flag THREAD_CREATION_FLAG_DEFER_SIGNALS
indeed gives the expected behavior, deferring signals until undefer_signals() is
called in the child thread. Thanks for the review and fix suggestion.
* Added a simple test showing the values of the defer_signals counter after fork().
* Also defer signals while registering fork hooks.
* While malloc provides fork heap hooks which lock the heaps and unlock/reinit,
malloc_debug provides empty hooks.
* Ideas suggested by Ingo, patch reviewed by him. Thanks a lot!
* Also call fork parent hooks on failure.
* Solve locks-up when combining multithreading and process forking, should help
with #13111.
If WP is not enabled then the kernel can freely write to read-only user
pages, which breaks copy-on-write.
Signed-off-by: Jessica Hamilton <jessica.l.hamilton@gmail.com>
This is separate to the VESA driver, as the VESA driver requires
using the VBE BIOS. Under UEFI, we don't have the VBE BIOS, nor
are we able to switch modes after leaving UEFI Boot Services, so
a dumb framebuffer driver seemed like the easier way to approach
the problem.
The framebuffer & vesa drivers now test for the presence of the
VESA_MODES_BOOT_INFO boot item to distinguish between which driver
to use. Also added check for the VESA mode count to determine
whether to add the VESA_MODES_BOOT_INFO item.
UEFI video updated to explicitly zero out the VESA and EDID
boot data.
The SpinLocker was always initialized to fThread->time_lock even though
fThread may be NULL. This looks like a simple oversight as the rest of
the method handles fThread being NULL and the team variants of these
timers have very similar logic and do the NULL check as well.
This fixes the last remaining KDL in the posixtestsuite.
Chunks may be physically contiguous, but virtually disjoint. Adding
physical addresses may cause ranges to be merged incorrectly.
Signed-off-by: Jessica Hamilton <jessica.l.hamilton@gmail.com>
While struct tm makes things more confusing than they need to be,
nothing in the API prevents handling those. So let's just accept them.
Fixes some strange cases in the cookie test suite (with a cookie set to
expire in year 101 B.C.)
Some libraries buildsystems (eg. zlib) somehow prevent the symbol from
being exported. We should fix that, but binaries with missing symbols
are already out there, so we need to handle them in any case.
The format for the .comment string changed at some point, and this
fallback code would always fail for files built only with "new" versions
of gcc.
Also consider gcc 5 to be ABI version 4, since it is still compatible
with the old ABI (and provides a new one side by side).
See https://gcc.gnu.org/onlinedocs/libstdc++/manual/using_dual_abi.html
for infos on GCC ABI changes in GCC 5.
This however doesn't help with the 64bit float operations that
gcc emits when assigning the physical framebuffer address in kernel_args,
which is a packed struct...
* Commit 337c4ccf introduced usage of plain memcpy in
get_next_frame_no_debugger(), when the frame is already
known to be on the kernel stack. However, it also needs
to check that the end of the frame is still within the
stack bounds. Otherwise this can cause a KDL if bp does
not point to a valid complete frame anymore and is
near a page boundary. Although with commit e477b10c such
cases should already be avoided, it's still safer to
check this here in case of e.g. analyzing broken stacks.
* No need to continue walking the stack when a zero return
address is found, only bogus frames will follow
* Fixes KDLs seen when using the system profiler, due to
a bug that will be fixed in the next commit...
BeRometer works now.
Signed-off-by: Adrien Destugues <pulkomandy@pulkomandy.tk>
This is a private API, but some apps used it anyway. We don't need a
complete implementation to at least make BeRoMeter run.
Fixes#5146.
The code was resetting the pointer to NULL, instead of setting the
pointed char to null-terminate the string. The result was resolving the
current directory later on, instead of the parent as requested.
This only happened when calling open_from with O_CREAT, and a name with
sub-directories inside it. The boot loader never does that, so the code
wasn't used until now.
Fixes#12941.
Thanks to mt for spotting the problem.
This separates the objects required for the various boot
loaders, allowing the build system to be able to build
for different targets alongside each other. Currently
only done for bios_ia32 vs efi, as both loaders will be
needed for the x86_64 images.
The HashMap constructor was called before the heap is initialized,
ending up calling malloc from the OpenHashMap constructor.
Oddly it was still working on x86 but broke other platforms.
Instead we add a Lookup() static method to Partition,
which by default walks gPartitions for the id,
and recursively calls itself on the children lists.
This means we must add a partition even temporarily to gPartitions
before Scan()ing it though.
Signed-off-by: François Revol <revol@free.fr>
EFI boot needs -fpic but all boot code was built with -fno-pic.
This is now set accordingly in HAIKU_BOOT_CCFLAGS and
HAIKU_BOOT_C++FLAGS.
Also setup compile flags for EFI platform.
* Only set HAIKU_BOOT_PLATFORM to bios_ia32 if not defined
* Add gnuefi build feature
* Introduce BOOT_LDFLAGS, and move options for passing to linker
into ArchitectureSetup
* x86_64 compile fixes for warnings in boot loader
* loader/elf.cpp: don't include ELF32 support when targeting EFI
* relocation_func.cpp: copy of the relocation code from gnuefi
to make _relocate extern "C", and avoid including <efilib.h>
* boot_loader_efi.ld: copy of gnuefi's elf_x86_64_efi.lds,
modified to include support for C++ constructors, etc. Keep in
sync with the gnuefi package
Signed-off-by: Jessica Hamilton <jessica.l.hamilton@gmail.com>
The #pragma weak does not work, the symbol is not defined and when
already defined, it is not made weak. Moreover, it does not make the
symbol global so we need to declare it with a FUNCTION.
If we want the symbol to be weak, then we should use .weak to do so. The
_longjmp symbol should also be changed to match, in that case.
Fixes#12912.
A few weeks back, I spotted in the Musl FAQ that they apparently ship
empty libm.a and libpthread.a files (https://www.musl-libc.org/faq.html),
which they said was for POSIX compatibility. A bit of digging got me to
http://pubs.opengroup.org/onlinepubs/9699919799/utilities/c99.html which
says:
> It is unspecified whether the libraries libc.a, libl.a, libm.a, libpthread.a,
> librt.a, [OB] [Option Start] libtrace.a, [Option End] libxnet.a, or liby.a
> exist as regular files. The implementation may accept as -l option-arguments
> names of objects that do not exist as regular files.
So to follow the letter of the law, we only need to have the "c99" command
accept these; however, it appears all Linux and BSD cstdlibs accept them
no matter what compliance mode is in effect.
Discussed with PulkoMandy. This will make HaikuPorts' job a lot easier...
- This is how it is named in other versions of elf.h (Linux, glibc, possibly more)
- ELF_MAGIC is used by libelf for the same thing, and the defines conflicts,
breaking libelf build on Haiku.
The boot still crashes some time later, but at least it is easier to
test now.
- PackageFS included in the net boot archive
- Tell the system it is booted "from image" when netbooting
* The Haiku specific notes contain a structure size field, now.
* Change the type of the count and size fields in the Haiku specific
notes to uint32 also for 64 bit ELF. The size field for a note is a
uint32 anyway.
* Add function core_dump_write_core_file(). It writes a core file for
the current thread's team. The file format is similar to that of
other OSs (i.e. ELF with PT_LOAD segments and a PT_NOTE segment), but
most of the notes are Haiku specific (infos for team, areas, images,
threads). More data will probably need to be added.
* Add team flag TEAM_FLAG_DUMP_CORE, thread flag
THREAD_FLAGS_TRAP_FOR_CORE_DUMP, and Team property coreDumpCondition,
a condition variable available while a core dump is progress. A
thread that finds its flag THREAD_FLAGS_TRAP_FOR_CORE_DUMP set before
exiting the kernel to userland calls core_dump_trap_thread(), which
blocks on the condition variable until the core dump has finished. We
need the team's threads to stop so we can get their CPU state (and
have a generally unchanging team state while writing the core file).
* Add user debugger message B_DEBUG_WRITE_CORE_FILE. It causes
core_dump_write_core_file() to be called for the team.
* Dumping core as an immediate effect of a terminal signal has not been
implemented yet, but that should be fairly straight forward.
Similar to arch_get_debug_cpu_state(), but the thread whose CPU state
to retrieve is specified. Works only for threads that aren't running,
and on x86-64 we can get the FPU state only when the thread was
interrupted in userland.
Not implemented for the incomplete architecture ports.
This resolves a TODO: We used thread_interrupt() to wake up the thread
from an interruptable wait. However, if the thread was already in the
kernel and about to start waiting, that would have no effect and the
thread would wait anyway. Now there's the new non-blockable signal
SIGNAL_DEBUG_THREAD, which is sent to the thread instead, making sure
that thread doesn't start waiting.
* When a watched directory contains a mount point, we need to resolve
the actual parent directory of the mount point in the file system to
serve the monitor.
* Added a directory argument for notify_{stat/attribute}_changed().
* This allows to watch only a directory, and get the notifications for
all of its files, not just add/remove entry notifications.
* Use print format macros to fix the 64 bit build.
* Correct a typo in the shift of the trigger mode definition. As the
value is 0 either way, this does not make a functional difference.
* Use macros instead of values in comparisons.
- Termios: cf{get,set}{i,o}speed can handle arbitrary speed values.
- The value is stored in the appropriate fields of the termios structure
in this case. The old constants (stored in the flags) are preserved
for BeOS binary compatibility.
- Adjust the FTDI FT232* driver to accept custom rates, by replacing the
hardcoded regster values with a function that will compute it
according to FTDI documentation (confirmed giving the same values for
the existing baudrates).
* Reverts f3e381dd
* Details in #12633
* For some unknown reason, this change breaks an Intel Core 2
system from booting (Dell Optiplex 960, E8400)
* If anyone has any ideas on why, let me know :-)
The heap implementation of the runtime_loader was switched to the one
of the bootloader in 6f0994d but was since updated independently.
To keep the diff between the two implementations as small as possible,
the bootloader implementation was first copied to the runtime_loader
and then some features not relevant in the runtime_loader (like the
special large allocation handling) have been removed and the
runtime_loader specific features (grow_heap, add_area) have been
reintegrated. But basically this applies 96689a5..HEAD of
src/system/boot/loader/heap.cpp to the runtime_loader heap.
This brings in the switch from a linked list to a splay tree based
free chunk management. Since the allocation counts in the runtime_loader
are rather small, this does not perceptibly affect performance in either
direction though.
The needed storage space for tracking the allocation size was not
accounted for when growing the heap. Since the growth size is always
rounded up to a multiple of 32KiB, this did almost never matter as the
new allocation wouldn't need the full size. If the allocation did
happen to need the full size however, the newly added area would always
be too small. As the allocation attempt was simply restarted after each
successful growth, this lead to an endless loop creating small new
areas, which would then quickly starve the system for memory.
Haiku does not yet support certain features related to POSIX threads.
Constants used to test for the presence of these features should
therefore be left undefined, according to the POSIX spec, but are
currently set to -1. This can cause software built on Haiku to
incorrectly detect the presence of these features.
* unistd.h: Undefine _POSIX_THREAD_ATTR_STACKADDR,
_POSIX_THREAD_PRIORITY_SCHEDULING feature constants.
* conf.cpp: __sysconf: Return -1 for unsupported features.
Signed-off-by: Augustin Cavalier <waddlesplash@gmail.com>
This commit replaces the placeholder implementation of sbrk(), which
operated on a process' heap, with real implementations of brk() and
sbrk() that adjust a process' program break.
* unistd.h: Add standard definitions of brk() and sbrk(); include
stdint.h for intptr_t.
* thread.cpp: Recognize RLIMIT_AS and RLIMIT_DATA resource limits
(both currently unlimited); order limit identifiers alphabetically.
* arch-specific.cpp: Remove sbrk_hook().
* malloc_debug_api.cpp: Remove sbrk_hook().
* unistd/Jamfile: Build brk.c instead of sbrk.c.
* unistd/brk.c: Add.
* unistd/sbrk.c: Delete (placeholder implementation).
* libroot_stubs.c: Remove sbrk_hook().
* libroot_stubs_legacy.c: Remove sbrk_hook().
* src/tests/.../posix/Jamfile: Build brk_test.c.
* brk_test.c: Add (simple unit test that demonstrates behaviour of
sbrk()).
Signed-off-by: Jérôme Duval <jerome.duval@gmail.com>
The anonymous namespace makes type definitions local to the translation
unit (like static does for objects). For pretty much any type not shared
across multiple files this is what one wants to happen (and might
erroneously expect to happen automatically).
This commit solves some actual collisions that were present:
* The VFS and the rootfs both used an incompatible VnodeHash struct for
their BOpenHashTable.
* XSI semaphores and message queues both used queued_thread, Ipc and
IpcHashTableDefinition.
For release builds these did not cause problems as the types were fully
inlined. Debug builds would crash at boot however because parts of a
BOpenHashTable<VnodeHash> from the rootfs meant to operate on struct
rootfs_vnode would be applied to one from the VFS expecting struct
vnode.
As such collisions are violations of the one definition rule, the code
is at fault and unfortunatley the compiler isn't required to diagnose
such problems across translation units (which isn't actually trivial).
This can lead to subtle and hard to debug problems and it's therefore
best to avoid leaking types into the global namespace whenever possible.
The opendir and closedir/free_dircookie hooks were called with
mismatched vnode. It seems only googlefs is actually affected by this,
since all other fs without a get_vnode_name just don't are about the
passed vnode arg to closedir and free_dircookie.
Now I should really get some sleep!
Reduce duplication of code by
* Removing from elf_common.h definitions available in os/kernel/elf.h
* Deleting elf32.h and elf64.h
* Renaming elf_common.h to elf_private.h
* Updating source to build using public and private ELF header files
together
Signed-off-by: Jessica Hamilton <jessica.l.hamilton@gmail.com>
The use of an unreliable test for relocatability effectively broke
runtime_loader's support for non-position-independent executables, as it
would insist on randomly positioning these files' segments in memory
anyway causing the program to quickly crash.
With this change runtime_loader uses the object type specified in the
file's header to determine whether its segments can be safely relocated,
restoring support for non-PI executables.
Fixes#12427.
Signed-off-by: Adrien Destugues <pulkomandy@pulkomandy.tk>
* Add -fgnu89-inline flag for libroot/posix/glibc
* Change __GNUC__ == 4 to __GNUC__ >= 4
Signed-off-by: Adrien Destugues <pulkomandy@pulkomandy.tk>
Fixes#11990, most of the changes had already been done.
* devfs: set st_rdev to the inode number of the node being queried. This
may not be the best thing to do, as it does not match what is set in
st_dev for other files, so it can't be used to find which device
stores a particular file. I'm not sure if st_rdev is actually used that
way anywhere, however.
* vfs: do not clobber st_rdev with -1 for "special" (device) files.
Refactor the code a little so setting the common attributes is done in
a single place.
Fixes#12390.
POSIX requires SIGTTOU to be sent to a process in a background process
group that tries to change the foreground process group ID associated
with its controlling terminal, unless the process is ignoring SIGTTOU or
the calling thread is blocking it. Previously the code checked the
former condition but not the latter, making it possible for calls to
tcsetpgrp() to get stuck in a loop and never return.
Should fix#3417.
Signed-off-by: Augustin Cavalier <waddlesplash@gmail.com>
Changed from white on red background, to yellow on black
(neutral) background. Red on black made it look like a
warning, whereas yellow feels more informative.
* This should fix ticket #4157, although I probably have missed
something.
* In any case, it no longer messes with the ref counts of the
file descriptor, and the race condition in put_fd() should be
gone.
* It's still rather messy all in all.
* Each io_context now has a "inherit_fds" member that decides whether
or not this context allows to inherit FDs to its children.
* This replaces the former O_CLOEXEC mechanism.
Previously the thread member was overwritten with the freeing thread
when a page was freed, leading to confusion when hitting unallocated
pages due to the debugger message still stating "allocated by thread".
Track the freeing thread separately as it might be interesting to know
both, which thread initially allocated and which thread eventually freed
an allocation.
These are always allocated using an area. The allocation size is
increased as to guarantee the availability of a suitable address. The
pages between the allocation info and the actual, aligned start address
and the pages past the allocation end are then protected.
This commit also fixes corruption of the allocation info for large
allocations that used areas. The alignment wasn't taken into account
when calculating the amount of space needed. The alignment could then
lead to rounding down the allocation start such that it would overlap
with the allocation info.
It provides a way for filesystems to cache a lookup failure and
therefore prevents repeated lookups of missing entries. This is a
common scenario for example in command lookup and compiling, where
each directory in PATH or each include directory is searched for the
given entry.
* Using native assembly functions would be a lot faster,
but would require quite a bit of changes to glibc.
* This gets arm linking for now... I'd personally like
to see musl in here in the future for gcc4 images. (pre-R2)
The individual debug heap implementations are now exposed via a
structure of function pointers and a common frontend dispatches the
malloc and malloc_debug APIs through them.
The MALLOC_DEBUG environment variable can be used to select the guarded
heap by adding 'g', otherwise the debug heap is used as the default.
Consequently the separate libroot_guarded is not needed anymore and has
been removed.
To allow the use of environment variables this early, init_env_post_heap
has been added and the heap dependent atfork() moved there. This allowed
to fold the code of init_heap_post_env into init_heap so the former has
been removed.
fts.c:
- Our fts functions were imported from FreeBSD and consequently did not
use the same weak alias methodology that most of our glibc-derived
POSIX functions do. These subsequently wound up clashing with the
implementation of said functions in current versions of coreutils,
resulting in assertion failures when e.g. running a program through
stdbuf, since the BSD-derived functions had different flag constraints
than their GNU peers. Consequently, this change adjusts the fts_*
family of functions to similarly be exported as weak symbols so they
can be preempted.
- B_DEBUG_MESSAGE_CONTINUE_THREAD now checks if the thread in question
is in a suspended state rather than waiting on the debug nub port, and
if so, handles resuming it automatically. This allows the continue message
to be used on the main thread of a team that was freshly created under
debug control without the API user having to be cognizant of the distinction.
