This code is where the AIO implementation is wired into existing Cygwin
mechanisms for file and device I/O: the fhandler* functions. It makes
use of an existing internal routine prw_open to supply a "shadow fd"
that permits asynchronous operations on a file the user app accesses
via its own fd. This allows AIO to read or write at arbitrary locations
within a file without disturbing the app's file pointer. (This was
already the case with normal pread|pwrite; we're just adding "async"
to the mix.)
This is the core of the AIO implementation: aio.cc and aio.h. The
latter is used within the Cygwin DLL by aio.cc and the fhandler* modules,
as well as by user programs wanting the AIO functionality.
Bug in current ARM64 WOW64: GetNativeSystemInfo returns
PROCESSOR_ARCHITECTURE_INTEL rather than PROCESSOR_ARCHITECTURE_ARM64.
Provide for this.
Make code better readable.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Guard the entire operation with the FastPebLock critical section
used by RtlSetCurrentDirectory_U as well, thus eliminating the
race between concurrent chdir/fchdir/SetCurrentDirectory calls.
Streamline comment explaining the fallback method.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* fhandler_socket_local.cc (get_inet_addr_local): Change type from
'static int' to 'int' to be callable from syslog.cc.
* syslog.cc (connect_syslogd): Use get_inet_addr_local() instead of
getsockname() to retrieve name information of the syslogd socket.
Our local ntsecapi.h wrapper corrects a bug in the definition of
SystemFunction036 which otherwise leads to crashes on 32 bit when
using RtlGenRandom. The fhandler_socket_local.cc file accidentally
included the incorrect w32api version of that file, rather than the
local wrapper. Fix it.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Certain tape drives (known example: QUANTUM_ULTRIUM-HH6) return
the non-standard ERROR_NOT_READY rather than ERROR_NO_MEDIA_IN_DRIVE
if no media is present. ERROR_NOT_READY is not documented as valid
return code from GetTapeStatus. Without handling this error code
Cygwin's tape code can't report an offline state to user space.
Fix this by converting ERROR_NOT_READY to ERROR_NO_MEDIA_IN_DRIVE
where appropriate.
Add a debug_printf to mtinfo_drive::get_status to allow requesting
user info without having to rebuild the DLL.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
pthread_timedjoin_np returns ETIMEDOUT if a thread is still running,
not EBUSY as pthread_tryjoin_np.
Also, clean up initializing timeout in pthread_tryjoin_np.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
- Move pthread_join to thread.cc to have all `join' calls in
the same file (pthread_timedjoin_np needs pthread_convert_abstime
which is static inline in thread.cc)
- Bump API version
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* fhandler.h (class fhandler_socket_inet): Add variable bool oobinline.
* fhandler_socket_inet.cc (fhandler_socket_inet::fhandler_socket_inet):
Initialize variable oobinline.
(fhandler_socket_inet::recv_internal): Make the handling of OOB data
as consistent with POSIX as possible. Add simulation of inline mode
for OOB data as a workaround for broken winsock behavior.
(fhandler_socket_inet::setsockopt): Ditto.
(fhandler_socket_inet::getsockopt): Ditto.
(fhandler_socket_wsock::ioctl): Fix return value of SIOCATMARK command.
The return value of SIOCATMARK of winsock is almost opposite to
expectation.
* fhandler_socket_local.cc (fhandler_socket_local::recv_internal):
Remove the handling of OOB data from AF_LOCAL domain socket. Operation
related to OOB data will result in an error like Linux does.
(fhandler_socket_local::sendto): Ditto.
(fhandler_socket_local::sendmsg): Ditto.
This fixes the issue reported in following post.
https://cygwin.com/ml/cygwin/2018-06/msg00143.html
Commit ebd645e on 2001-10-03 made environ.cc:_addenv() add unneeded
space at the end of the environment block to "work around problems
with some buggy applications." This clutters the code and is
presumably no longer needed.
Thanks to Ken Harris <Ken.Harris@mathworks.com> for the diagnosis.
When backing up tail to handle a "..", the code only checked that
it didn't underrun the destination buffer while removing path
components. It did *not* take into account that the first backslash
in the path had to be kept intact. Example path to trigger the
problem: "C:\A..\..\..\B'
Fix this by moving the dst pointer to the first backslash so subsequent
tests cannot underrun this position. Also make sure that we always
*have* a backslash.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Thanks to Ken Harris <Ken.Harris@mathworks.com> for the diagnosis
which led to a buffer underrun in this loop.
Revert before release.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
GCC 7 is able to see straight through this trick, so use a more formal
method to avoid the warning.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
There are systems with a MaximumProcessorCount not
reflecting the actually available CPUs. The ActiveProcessorCount
is correct though. So we use ActiveProcessorCount rather than
MaximumProcessorCount per group to set group affinity correctly.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Change set_socket_type/get_socket_type to virtual methods
* Move various variables into af_unix_shmem_t
* Change sun_name_t to match new usage pattern
* Move shut_state definition and add a name for the 0 value
* Allow marking packet as administrative packet. This allows
filtering out info packets exchange between peers and tweak
data accordingly.
* Rename send_my_name to send_sock_info and send credentials
if not called from bind (so the socket was already connected)
* Handle SO_PASSCRED in setsockopt/getsockopt
* Add input size checking to setsockopt/getsockopt
* Use NT functions where appropriate
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
We need to share socket info between threads *and* processes.
SRWLOCKs are single-process only, unfortunately. Provide a
sharable low-profile spinlock instead.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
E.g. arm ABI requires -fshort-enums for bare-metal toolchains.
Given there are only 29 category enums, the compiler chooses an
8 bit enum type, so a size of 11 bits for the bitfield leads to
a compile time error:
error: width of 'cat' exceeds its type
enum category cat: 11;
^~~
Fix this by aligning the size of the category members to byte
borders.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Mark Geisert
Corinna Vinschen
Takashi Yano
Ken Brown
Sergejs Lukanihins
Yaakov Selkowitz