Commit Graph

18984 Commits

Author SHA1 Message Date
Ken Brown 775d8d0242 Cygwin: FIFO: add 'record_connection' method
Future commits will have to re-use the code for recording a client
connection.  For convenience, factor out this code into a new method.
2020-10-14 10:53:52 -04:00
Ken Brown b26fab8cfa Cygwin: FIFO: remove incorrect duplexer code
raw_read had some code that was based on an incorrect implementation
of duplexers.
2020-10-14 10:53:52 -04:00
Ken Brown e1d5be1783 Revert "Cygwin: check for STATUS_PENDING in fhandler_base::raw_read"
This reverts commit 10bf30bebf.  It was
made because an incorrect implementation of duplex FIFOs.
2020-10-14 10:53:52 -04:00
Michael Haubenwallner 1559faf0f2 Cygwin: dll_list: drop unused read_fbi method 2020-10-14 10:53:52 -04:00
Corinna Vinschen 31f4472eff Cygwin: Add release info for 3.0.7
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
(cherry picked from commit 01c253a4c5)
2020-10-14 10:53:52 -04:00
Michael Haubenwallner cc6a1cbe27 Cygwin: dll_list: query dll file id at load time
NtQueryVirtualMemory for MemorySectionName does not reliable return the
changed dll file name when another process does move the file around,
and we may end up creating forkable hardlinks to wrong dll files.
So query the file id when loading the dll rather than before fork.
2020-10-14 10:53:52 -04:00
Michael Haubenwallner ecaa2c5d26 Cygwin: dll_list: stat_real_file_once as dll method
Make stat_real_file_once a method of struct dll, to be more flexible on
where to use.  Also, debug print memory section name queried for a dll.
This is a preparation to query the file id when loading the dll.
2020-10-14 10:53:52 -04:00
Michael Haubenwallner d3e84aef20 Cygwin: dll_list: drop FILE_BASIC_INFORMATION
Querying FILE_BASIC_INFORMATION is needless since using win pid+threadid
for forkables dirname rather than newest last write time.
2020-10-14 10:53:52 -04:00
Corinna Vinschen 62cd365069 Cygwin: update era and message locale data
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2020-10-14 10:53:52 -04:00
Faraz Shahbazker add5a9c033 Fix order of eh_frame sections in linker scripts
The compiler driver positions the linker script at the end of the linker
command-line, after crtend.o.  As a result, any INPUT objects and archive
GROUPs introduced by the linker script are placed after crtend.o and the
end-of-frame marker provided by crtend.o ends up in between .eh_frames
instead of being at the end.

This has always been a problem, but a binutils update to clean-up
redundant NULL markers in .eh_frame exposes it as a execution failure in
exception-handling tests.  This patch re-orders .eh_frames in all
MIPS linker scripts so that the one from crtend.o is always placed last.

libgloss/
	* mips/array.ld: Re-order to place .eh_frame from crtend.o
	after all other .eh_frame sections.
	* mips/cfe.ld: Likewise.
	* mips/ddb-kseg0.ld: Likewise.
	* mips/ddb.ld: Likewise.
	* mips/dve.ld: Likewise.
	* mips/idt.ld: Likewise.
	* mips/idt32.ld: Likewise.
	* mips/idt64.ld: Likewise.
	* mips/jmr3904app.ld: Likewise.
	* mips/lsi.ld: Likewise.
	* mips/mti32.ld: Likewise.
	* mips/mti64.ld: Likewise.
	* mips/mti64_64.ld: Likewise.
	* mips/mti64_n32.ld: Likewise.
	* mips/nullmon.ld: Likewise.
	* mips/pmon.ld: Likewise.
	* mips/sde32.ld: Likewise.
	* mips/sde64.ld: Likewise.
2020-10-14 10:53:52 -04:00
Ken Brown bd02adb85d Cygwin: FIFO: synchronize the blocking mode of a writer's pipe
The blocking mode of the Windows pipe underlying a writer is set to
match that of the writer itself when the latter is opened.  Define
fhandler_fifo::fcntl to keep the pipe and the writer in sync if the
blocking mode is changed via fcntl.
2020-10-14 10:53:52 -04:00
Ken Brown b467e93875 Cygwin: AF_UNIX: sendmsg: avoid double use of variable name
Use 'waitret' instead of 'ret' for the return value of cygwait, since
there is already a different 'ret' variable in use.  The previous
double use of 'ret' was legal because of scoping rules, but possibly
confusing.
2020-10-08 16:41:12 -04:00
Ken Brown de54d280eb Cygwin: AF_UNIX: sendmsg: handle messages that are too long
Return with errno EMSGSIZE if AF_UNIX_PKT_DATA_APPEND fails before any
data has been added to the packet to be sent.
2020-10-08 16:41:12 -04:00
Ken Brown 3eab592c22 Cygwin: AF_UNIX: sendmsg: fix return value
On a successful write, the return value is now the number of bytes of
user data written, not the total number of bytes written.
2020-10-08 16:41:12 -04:00
Ken Brown 780133d455 Cygwin: AF_UNIX: sendmsg: fix signal handling
If a blocking write is interrupted by a signal and call_signal_handler
returns nonzero, resume waiting for the write to complete.
2020-10-08 16:41:12 -04:00
Ken Brown add34a7b53 Cygwin: AF_UNIX: open_pipe: fix invalid handle error
Commit debdfb8b, "Cygwin: AF_UNIX: Rework internal methods to return
HANDLEs", removed a set_handle call.  As a result, the attempt to
exchange socket info fails with "Invalid Handle".

Fix this by moving the send_sock_info call into a new 'xchg_sock_info'
method, which is then invoked by the callers of open_pipe if
necessary, after they have called set_handle.

Also, call recv_peer_info in addition to send_sock_info when
exchanging socket information.

Remove the last argument of open_pipe, which is no longer needed.
Adjust all callers.
2020-10-08 16:37:52 -04:00
Ken Brown 0f800bf44a Cygwin: AF_UNIX: accept4: copy trailing NUL byte
If the caller has requested the peer's address, include the trailing
NUL byte of the address if possible.
2020-10-08 16:35:49 -04:00
Corinna Vinschen a0dd60f857 Cygwin: AF_UNIX: sendmsg: first cut, untested 2019-04-25 19:04:50 +02:00
Corinna Vinschen dab6ac1b33 Cygwin: AF_UNIX: introduce methods to handle ancillary data
...doing nothing for now.
2019-04-25 19:02:42 +02:00
Corinna Vinschen 3bd0df5170 Cygwin: AF_UNIX: setsockopt: align SO_RCVBUF/SO_SNDBUF to Linux
The incoming size is doubled and must not be less than 256.
Fold both options into one code block.  Fix indentation.
2019-04-25 19:02:42 +02:00
Corinna Vinschen b54240b08a Cygwin: AF_UNIX: convert AF_UNIX_PKT helpers to inline functions
add AF_UNIX_PKT_DATA_END and AF_UNIX_PKT_DATA_APPEND
2019-04-25 19:02:42 +02:00
Corinna Vinschen debdfb8bb6 Cygwin: AF_UNIX: Rework internal methods to return HANDLEs
- Return HANDLE value of just opened/created objects

- open_pipe does not set the fhandler io_handle.  The caller
  is now resonsible how to use the handle.

- Rename create_file/open_file to create_socket/open_socket

- Drop sockaddr_in validity check from connect.  It's performed
  in open_socket anyway.
2019-04-25 19:02:41 +02:00
Corinna Vinschen bd16e44f1b Cygwin: AF_UNIX: fix #ifdef __WITH_AF_UNIX spot 2019-04-25 19:02:41 +02:00
Corinna Vinschen f527171a93 Cygwin: define MSG_EOR and refuse in send(2)
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2019-04-25 19:00:08 +02:00
Erik M. Bray 489e7e2048 Minor improvements to socket error handling:
* Change default fallback for failed winsock error -> POSIX error
  mappings to EACCES, which is a valid errno for more socket-related
  syscalls.

* Added a few previously missing entries to the wsock_errmap table
  that have obvious POSIX errno.h analogues.
2019-04-23 17:20:57 +02:00
Ken Brown 9957a7895b Cygwin: FIFO: restart listen_client thread after fork/exec
This allows writers to connect immediately.  Previously the lct wasn't
restarted until the reader attempted to read.
2019-04-22 07:55:58 -04:00
Ken Brown 4443100b53 Cygwin: FIFO: stop the listen_client thread before fork/exec
Add methods need_fixup_before, init_fixup_before, and
fixup_before_fork_exec to accomplish this.  Stopping the thread makes
sure that the client handler lists of the parent and child remain in
sync while the forking/execing is in progress.
2019-04-20 14:31:07 -04:00
Ken Brown 252cd0ce2b Cygwin: FIFO: close connect_evt handles as soon as possible
Keeping them open too long can cause an attempt to close them twice
after a fork or exec.
2019-04-20 14:31:07 -04:00
Ken Brown 24c56e5a2c Cygwin: FIFO: avoid WFMO error in listen_client_thread
Don't set lct_termination_evt to NULL too early in
fhandler_fifo::stop_listen_client.  Doing so leads to an "Invalid
Handle" error in WFMO.
2019-04-20 14:31:07 -04:00
Ken Brown ef269531a9 Cygwin: FIFO: duplicate the i/o handle when opening a duplexer
Don't use the same i/o handle for the first client handler as is used
for the fhandler itself; this can lead to a later attempt to close the
same handle twice.  Instead use a duplicate.
2019-04-20 14:31:07 -04:00
Ken Brown 4ecea14a58 Cygwin: FIFO: stop the listen_client thread on an opening error
Don't just close the thread handle.
2019-04-20 14:31:07 -04:00
Corinna Vinschen 28182bca18 Cygwin: drop unsupported Windows 10 versions
* Pre-release version still reporting kernel version 6.4.
* Windows 10 1511 is out of support since 2017-10-10.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2019-04-19 18:13:02 +02:00
Ken Brown 230c5df2df Cygwin: FIFO: avoid hang after exec
Define fhandler:fifo::fixup_after_exec, which sets listen_client_thr
and lct_termination_evt to NULL.  This forces the listen_client thread
to restart on the first attempt to read after an exec.  Previously the
exec'd process could hang in fhandler_fifo::raw_read.
2019-04-18 19:34:07 +02:00
Jozef Lawrynowicz f811485ffb MSP430: Make the inclusion of run_*_array fns depend on defined assembler symbols
Many of the MSP430 crt functions (e.g. to initialize bss) are linked
"dynamically", based on symbols defined in the program.
The GNU assembler defines the symbols corresponding to the crt
functions by examining the section names in the input file.

If GCC has been configured with --enable-initfini-array, then
.init_array and .fini_array will hold pointers to global
constructors/destructors. These sections can also hold functions that
need to be executed for other purposes.

The attached patch puts the __crt0_run_{preinit,init,fini}_array and
__crt0_run_array functions in their own object files, so they will
only be linked when needed.

Successfully regtested the DejaGNU GCC testsuite using the binutils and
newlib changes together with GCC trunk configured with
--enable-initfini-array.
2019-04-18 10:29:24 +02:00
Jozef Lawrynowicz 38ecf252e5 Fix incorrect assembly code in _msp430_run_array 2019-04-16 13:23:46 +02:00
Ken Brown 2b4cf7622e Cygwin: FIFO: fix and simplify listen_client_thread
Remove fifo_client_handler::connect and move its code into
listen_client_thread.  That way we can check the return status when a
client handler's connect_evt is signaled.  Previously we incorrectly
assumed there was a successful connection.

Also simplify listen_client_thread in the following ways:

- Replace fhandler_fifo::disconnect_and_reconnect by a new
  delete_client_handler method.  Now we just delete invalid client
  handlers rather than trying to re-use them.

- Try to maintain a client handler list that consists of connected
  client handlers and exactly one that is listening for a connection.
  This allows us to call WaitForMultipleObjects with only two wait
  objects.

- Remove 'dummy_evt' from the fifo_client_handler struct; it is no
  longer needed.

- On exit from listen_client_thread, delete the "extra" (listening)
  client handler.  Otherwise there could be a connection that doesn't
  get recorded in the client handler list.  This could happen when a
  file descriptor is being duplicated.
2019-04-16 12:54:43 +02:00
Ken Brown bb46627871 Cygwin: FIFO: improve raw_write
Don't set the write end of the pipe to non-blocking mode if the FIFO
is opened in blocking mode.

In fhandler_fifo::raw_write in blocking mode, wait for the write to
complete rather than returning -1 with EAGAIN.

If the amount to write is large, write in smaller chunks (of size
determined by a new data member max_atomic_write), as in
fhandler_base_overlapped.

For convenience, add two new NTSTATUS codes, STATUS_THREAD_SIGNALED
and STATUS_THREAD_CANCELED, to ntdll.h.
2019-04-16 12:54:43 +02:00
Ken Brown a7d08b3ecd Cygwin: FIFO: start the listen_client thread when duping a reader
Otherwise it doesn't get started until the dup'd fd tries to read,
which delays client connections.
2019-04-16 12:54:43 +02:00
Ken Brown 7b28776d3f Cygwin: FIFO: fix clone
After copyto is called, make the new fhandler's pipe_name point to the
new fhandler's pipe_name_buf, which is a *copy* of the old fhandler's
pipe_name_buf.  Previously, get_pipe_name would return the wrong
result after a clone/dup, causing create_pipe_instance and open_pipe
to fail.

Also, stop the listen_client thread when cloning.  Otherwise the
thread can keep accepting connections that the cloned fhandler won't
know about.

Do this via a new method fhandler_fifo::stop_listen_client, extracted
from fhandler_fifo::close.
2019-04-16 12:54:43 +02:00
Ken Brown c5bc7a8065 Cygwin: FIFO: use a retry loop when opening a writer
There may be short periods when there's no pipe instance available.
Keep trying.
2019-04-16 12:54:43 +02:00
Ken Brown 6b20be0944 Cygwin: FIFO: fix the use of the read_ready event
Make read_ready a manual reset event.  It should always be set shortly
after startup of the listen_client thread and remain set until the
thread terminates.  (We don't want writers to connect without being
recorded in the client handler list.)

Remove the unnecessary code that checks for read_ready when a reader
is opening.
2019-04-16 12:54:43 +02:00
Ken Brown 3ef03376c5 Cygwin: FIFO: fix fifo_client_handler::close
Make sure that fhandler_base::close rather than fhandler_fifo::close
is called on the fhandler.  Also, delete the fhandler, since we
allocated it.
2019-04-16 12:54:43 +02:00
Ken Brown d243b3c70e Cygwin: FIFO: code simplification: don't overload get_handle
Rename fhandler_fifo::get_handle(int) to get_fc_handle(int), and
remove fhandler_fifo::get_handle(void).
2019-04-16 12:54:43 +02:00
Ken Brown 10bf30bebf Cygwin: check for STATUS_PENDING in fhandler_base::raw_read
If NtReadFile returns STATUS_PENDING, wait for the read to complete.
This can happen, for instance, in the case of a FIFO opened with
O_RDRW.
2019-04-16 12:54:43 +02:00
Ken Brown 513f050cbf Cygwin: FIFO: fix the error checking in raw_read
If the pipe is empty, we can get either ERROR_NO_DATA or
ERROR_PIPE_LISTENING.
2019-04-16 12:54:43 +02:00
Ken Brown 0c72e766e2 Cygwin: FIFO: fix a thinko in listen_client_thread 2019-04-16 12:54:43 +02:00
Ken Brown 1643789517 Cygwin: FIFO: remember the type of the fhandler
Add data members 'reader', 'writer', and 'duplexer' to the
fhandler_fifo class.  Set them in fhandler_fifo::open.  ('duplexer'
replaces the previous '_duplexer'.)

This will be useful in later commits.
2019-04-16 12:54:43 +02:00
Ken Brown 5281699926 Cygwin: FIFO: hit_eof: add a call to fifo_client_lock
The second check of nconnected needs to be protected by a lock as well
as the first.
2019-04-16 12:54:43 +02:00
Ken Brown b63843ed56 Cygwin: FIFO: rename client[] to fc_handler[]
The word "client" suggests something that holds a handle to the client
side of the pipe (in Windows terminology).  But our
fifo_client_handlers hold a handle the server side of the pipe, and
they *connect* to clients.
2019-04-16 12:54:43 +02:00
Jozef Lawrynowicz 1e6c561d48 Implement reduced code size "tiny" printf and puts
"tiny" printf is derived from _vfprintf_r in libc/stdio/nano-vfprintf.c.
"tiny" puts has been implemented so that it just calls write, without
any other processing.
Support for buffering, reentrancy and streams has been removed from
these functions to achieve reduced code size.

This reduced code size implementation of printf and puts can be enabled
in an application by passing "--wrap printf" and "--wrap puts" to the
GNU linker. This will replace references to "printf" and "puts" in user
code with "__wrap_printf" and "__wrap_puts" respectively.
If there is no implementation of these __wrap* functions in user code,
these "tiny" printf and puts implementations will be linked into the
final executable.

The wrapping mechanism is supposed to be invisible to the user:
- A GCC wrapper option such as "-mtiny-printf" will be added to alias
  these wrap commands.
- If the user is unaware of the "tiny" implementation, and chooses to
  implement their own __wrap_printf and __wrap_puts, their own
  implementation will be automatically chosen over the "tiny" printf and
  puts from the library.

Newlib must be configured with --enable-newlib-nano-formatted-io for
the "tiny" printf and puts functions to be built into the library.

Code size reduction examples:
printf("Hello World\n")
  baseline - msp430-elf-gcc gcc-8_3_0-release
     text    data     bss
   5638     214      26
  "tiny" puts enabled
    text    data     bss
     714      90      20

printf("Hello %d\n", a)
  baseline - msp430-elf-gcc gcc-8_3_0-release
    text    data     bss
   10916     614      28

  "tiny" printf enabled
    text    data     bss
    4632     280      20
2019-04-15 14:22:33 +02:00