To allow reopening a file open in another process by HANDLE, introduce
a matching file_pathconv method, taking a file descriptor as parameter.
The result is a serialized path_conv and a HANDLE value. The HANDLE is
valid in the foreign process and MUST be duplicated into the target
process before usage.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
So far io_handle is NULL when calling fhandler_base::open to
open or create a file. Add a check for io_handle to allow
priming the fhandler with a HANDLE value so we can reopen a
file from a HANDLE on file systems supporting it. This allows
to open already deleted files for further action. This will
be used by open("/proc/PID/fd/DESCRIPTOR") scenarios.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The commit message of commit 07e0a9584f
and the expectation set therein, are wrong.
There's no POSIX semantics allowing to link a file with a link
count of 0 and making it available in the file system again.
In fact, the Linux linkat extension AT_EMPTY_PATH explicitely
disallows to link a file descriptor to a file with a link count
of 0, except for O_TMPFILE without O_EXCL.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
- Turns out, the definition of POSIX unlink semantics is half-hearted
so far: It's not possible to link an open file HANDLE if it has
been deleted with POSIX semantics, nor is it possible to remove
the delete disposition. This breaks linkat on an O_TMPFILE.
Tested with W10 1809.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
On Windows 10 1803 and later, create dirs under the Cygwin
installation dir as case sensitive, if WSL is installed.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
- short-circuit most code in unlink_nt since it's not necessary
anymore if FILE_DISPOSITION_POSIX_SEMANTICS is supported.
- Immediately remove O_TMPFILE from filesystem after creation.
Disable code for now because we have to implement /proc/self/fd
opening by handle first, lest linkat fails.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Newer FAT32 and exFAT add FILE_SUPPORTS_ENCRYPTION to their
flags which wasn't handled by Cygwin yet.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Various new file info class members adding important POSIX semantics
have been added with W10 1709. We may want to utilize them, so add
a matching wincaps.
Rearrange checking the W10 build number to prefer the latest builds
over the older builds. Rename wincap_10 to wincap_10_1507 for
enhanced clarity.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
- Add missing members added in later OS versions
- Rearrange accompanying FILE_foo_INFORMATION structs
ordered by info class
- Add promising FILE_foo_INFORMATION structs of later
Windows 10 releases plus accompanying enums
- Drop "Checked on 64 bit" comments since that's self-evident
these days
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The check for the TEB being allocated beyond the first 2GB area is not
valid anymore. At least on W10 WOW64, the TEB is allocated in the
lower 2GB even in large-address aware executables. Use VirtualQuery
instead. It fails for invalid addresses so that's a simple enough test.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
While reformatting the script, backticks `` were replaced with
brackets $(). This in turn invalidated the \\( ... \\) expressions in the
sed script because backslash resolution in $() works differently from
backslash resolution in ``. Only a single backslash is valid now.
While at it, fix up the uname(2) date representation when building a
snapshot.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
when calling clocks too early in DLL init, the vtables are not correctly
set up for some reason. Calls to init() from now() fail because the init
pointer in the vtable is NULL.
Real life example is mintty which runs into a minor problem at startup,
triggering a system_printf call. Strace is another problem, it's called
the first time prior to any class initialization.
Workaround is to make sure that no virtual methods are called in an
early stage. Make init() non-virtual and convert resolution() to a
virtual method instead. Add a special non-virtual
clk_monotonic_t::strace_usecs.
While at it:
- Inline internal-only methods.
- Drop the `inited' member. Convert period/ticks_per_sec toa union.
Initialize period/ticks_per_sec via InterlockeExchange64.
- Fix GetTickCount64 usage. No, it's not returning ticks but
milliseconds since boot (unbiased).
- Fix comment indentation.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Use whatever native unit the system provides for the resolution of
a timer to avoid rounding problems
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
- Drop hires_[nm]s clocks, rename hires.h to clock.h.
- Implement clk_t class as an extensible clock class in new file clock.cc.
- Introduce get_clock(clock_id) returning a pointer to the clk_t instance
for clock_id. Provide the following methods along the lines of the former
hires classes:
void clk_t::nsecs (struct timespec *);
ULONGLONG clk_t::nsecs ();
LONGLONG clk_t::usecs ();
LONGLONG clk_t::msecs ();
void clk_t::resolution (struct timespec *);
- Add CLOCK_REALTIME_COARSE, CLOCK_MONOTONIC_RAW, CLOCK_MONOTONIC_COARSE
and CLOCK_BOOTTIME clocks.
- Allow clock_nanosleep, pthread_condattr_setclock and timer_create to use
all new clocks (both clocks should be usable with a small tweak, though).
- Bump DLL major version to 2.12.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
clock_setres is a questionable function only existing on QNX.
Disable the function, just return success for CLOCK_REALTIME
to maintain backward compatibility.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The current method to make hires_ns priming thread-safe isn't
thread-safe. Rather than hoping that running the thread in
TIME_CRITICAL priority is doing the right thing, use a spinlock.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
LARGE_INTEGER has QuadPart anyway, no reason to compute the
64 bit value from HighPart and LowPart.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
fhandler_socket_wsock::set_socket_handle calls set_flags after
setting the O_NONBLOCK/O_CLOEXEC flags, thus overwriting them.
It also turns out that fhandler_socket_wsock::init_events is called
too late. The inheritence flags are changed before creating the
socket event handling objects. Thus, inheritence flags for
those objects are wrong with SOCK_CLOEXEC.
Fix this by reordering the calls and setting the file flags through
fhandler_base::set_flags.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Regression introduced with 2.11.0:
The failure paths in socket, socketpair and accept4 functions and
methods accidentally release *unused* cygheap_fdmanip objects. The
subsequently called dtable::release method was designed to be called for
*used* cygheap_fdmanip objects only. Using them on unused objects leads
to NULL pointer member dereferencing.
Worse, the inet/local accept4 methods only release the cygheap_fdmanip
object but neglect to delete the just created fhandler_socket_* object.
Fix this by removing the erroneous release calls in the aforementioned
failure paths and delete the fhandler_socket_* object in accept4 instead.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The fhandler_base_overlapped::copyto clears atomic_write_buf on the
clone, but none of the derived classes were doing this. This allowed
the destructor to double-free the buffer and corrupt cygheap.
Clear atomic_write_buf in copyto of all derived classes.
Move common content of the various <sys/dirent.h> and the latest FreeBSD
<dirent.h> to <dirent.h>.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
Drop Cygwin-specific nanl in favor of a generic implementation
in newlib. Requires GCC 3.3 or later.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The current loop condition is borderline. Make sure it ends and
choose a replacement char in the unlikely case the current console
font isn't recognized at all.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Rather than relying on an index variable, store the current
replacement char and use that directly in WriteConsoleW.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
EnumFontFamiliesExW fails if the font is "Terminal" (aka "Raster Fonts")
and lfCharSet requests ANSI_CHARSET. Using DEFAULT_CHARSET fixes this.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Make sure device context is not copied to forked process.
It is a process-specific datastructure.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Try various Unicode characters which may be used as a replacement
character in case an invalid character has to be printed.
Current list is 0xfffd "REPLACEMENT CHARACTER", 0x25a1 "WHITE SQUARE",
and 0x2592 "MEDIUM SHADE" in that order.
Additionally workaround a problem with some fonts (namely DejaVu
Sans Mono) which are returned wit ha broken fontname with trailing
stray characters.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
So far we printed a half filled square (0x2592) if the input char is
invalid, but using REPLACEMENT CHARACTER (0xfffd) is apparently the way
to go.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Commit 35998fc2fa fixed the buffer underun
in win32 path normalization, but introduced a new bug: A wrong
assumption led to the inability to backtrack the path outside of the
current working directory in case of relative paths.
This patch fixes this problem, together with a minor problem if the CWD
is on a network share: The result erroneously started with tripple
backslash if the src path starts with a single backslash.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Starting with Windows 10, LookupAccountSid/Name return valid
info for the login session with new SID_NAME_USE value
SidTypeLogonSession. To return the same info as on pre-Windows 10,
we have to handle this type.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
cygpsid::get_id neglects to set the type to 0 (ACL_UNDEFINED_TAG
in POSIX speak) if the SID can not be translated into a valid
uid or gid. This in turn leads to incorrect handling of uid/gid -1
entries.
Fix this by setting type to 0 if the id is unknown.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This patch follows glibc. Original commit message:
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu, 14 Apr 2016 06:54:57 +0000
Remove union wait [BZ #19613]
The overloading approach in the W* macros was incompatible with
integer expressions of a type different from int. Applications
using union wait and these macros will have to migrate to the
POSIX-specified int status type.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Add __nl_item to <sys/_types.h> for FreeBSD compatibility. Use it in
<langinfo.h> and the Cygwin <nl_types.h>. Make the enum __nl_item in
<langinfo.h> anonymous.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
This reverts commit 8a32c24a7b.
Replacing page_size() with allocation_granularity() was incorrect.
The values returned by get_mem_values() are # of pages of size
page_size(). Multiplying with allocation_granularity() here
results in values 16 times too big.
By excluding the denormal-operand exception from FE_ALL_EXCEPT, it will not
be possible anymore to UNmask this exception by means of the API defined by
/usr/include/fenv.h
Note: terminology has changed since IEEE Std 854-1987; denormalized numbers
are called subnormal numbers nowadays.
This modification has basically been motivated by the fact that it is also
not possible on Linux to manipulate the denormal-operand exception by means
of the interface as defined by /usr/include/fenv.h. This has been the state
of affairs on Linux since 2001 (Andreas Jaeger).
The exceptions required by the standard (IEEE Std 754), in case they can be
supported by the implementation, are:
FE_INEXACT, FE_UNDERFLOW, FE_OVERFLOW, FE_DIVBYZERO and FE_INVALID.
Although it is allowed to define additional exceptions, there is no reason
to support the "denormal-operand exception" in this case (fenv.h), because
the subnormal numbers can be handled almost as fast the normalized numbers
by the hardware of the x86/x86_64 architecture. Said differently, a reason
to trap on the input of subnormal numbers does not exist. At least that is
what William Kahan and others at Intel asserted around 2000.
(that is William Kahan of the K-C-S draft, the precursor to the standard)
This commit modifies winsup/cygwin/include/fenv.h as follows:
- redefines FE_ALL_EXCEPT from 0x3f to 0x3d
- removes the definition for FE_DENORMAL
- introduces __FE_DENORM (0x2) (enum in Linux also uses __FE_DENORM)
- introduces FE_ALL_EXCEPT_X86 (0x3f), i.e. ALL x86/x86_64 FP exceptions
* create new function __get_cpus_per_group to evaluate # of CPU groups
* Call from format_proc_cpuinfo and sched_getcpu
* Bump API minor version
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
fnstenv MUST be followed by fldenv in fegetenv(), as the former disables all
exceptions in the x87 FPU, which is not appropriate here (fegetenv() ).
fldenv after fnstenv should reload the x87 FPU w/ the configuration that was
saved by fnstenv, i.e. a configuration that might have exceptions enabled.
Note: x86_64 uses SSE for floating-point, not the x87 FPU. However, because
feraiseexcept() attempts to provoke an exception using the x87 FPU, the bug
in fegetenv() will make this attempt futile here (x86_64).
Note: WoW uses the x87 FPU for floating-point, not SSE. Here anything that
would normally result in triggering an exception, not only feraiseexcept(),
will not be able to, as result of the bug in fegetenv().
Updates to misc files to integrate AIO into the Cygwin source tree.
Much of it has to be done when adding any new syscalls. There are
some updates to limits.h for AIO-specific limits. And some doc mods.
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.
Make getfacl print two colons instead of one after "other" and "mask".
Change the help text for setfacl to indicate that there can be either
one colon or two.
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>
Per-socket info in fhandler isn't correctly shared between multiple
instances of th same descriptor. Implement a basic shared info which
is shared between all instances of a socket.
This also requires to move the fhandler_socket status bits into
fhandler_socket_wsock since the data is moved to the shared region
for AF_UNIX sockets.
Also, drop backing file requirement for socketpair server socket.
This will be handled differently in recvmsg/sendmsg.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* don't abort on failing allocation, just return with error
* make sure the allocation is restricted to a single process
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Bad idea. A file hidden from directory listings is not seen by
rm either, so it never calls unlink for the file and a recursive
removal of the parent directory fails with "directory not empty".
Fix comments accordingly.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Use correct cygwait/WFSO invocation to not die on cancel and signals
uncontrolled.
* Manage io handles under io_lock.
* Copy peer address to user space under SEH to avoid a resource leak.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Using TerminateThread potentially leaks resources. In our case,
the connect wait thread may be forcefully terminated after
having successfully opened a client side pipe handle. If this
occurs, we have a stale pipe server instance, so the pipe will
never be closed as long as the process lives.
Avoid this by changing the npfs handle to non-blocking, so we can
wait on a termination event object from inside the thread itself
and cleanly exit from the thread instead of terminating.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Depending on the exact circumstances, some erros are indicated
by different status codes. Add helper macros to handle them
together.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The handle to the device is never needed. As the name impies,
FSCTL_PIPE_WAIT works on the file system, not on the device level.
Drop opening the device and make sure to open only one handle to NPFS.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
They are only used there anyway and it allows to use the AF_UNIX
macro without tweaking header files. While at it, improve
both constructors. The default constructor now creates the name
of an unnamed socket, the constructor taking parameters carefully
checks its input.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
...plus lots of helper functions. Add comment to explain how everything
works. This comment will be improved while implementing the yet missing
parts.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This function is going to be used for transposing sun_path of
abstract sockets. This also adds a transposition of the NUL
character to tfx_chars since NUL-bytes in abstract socket names
are perfectly valid.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Add constructors and new/delete operators to make sure sun_name_t
objects are allocated on the cygheap.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* check_reparse_point_target returns a path flag mask, rather than
just 1. Return PATH_SYMLINK | PATH_REP for symlinks and directory
mount points, PATH_SOCKET | PATH_REP for AF_UNIX sockets.
* Define Cygwin AF_UNIX socket reparse tag and GUID in ntdll.h.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Rearrange includes and drop unneccessary ones.
* Don't pull in cygwin/socket.h into sys/un.h just to get
sa_family_t. Include sys/types.h and use __sa_family_t instead.
* start including Windows headers using the w32api/ path prefix
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
fhandler_cygdrive has a size of 696 bytes on x86_64, while the next
biggest fhandler type, fhandler_pty_master, is 584 bytes. The members
responsible for the size are private to opendir/readdir/closedir usage.
fhandler_disk_file stores private readdir data in DIR->__d_internal
instead. Use equivalent method with fhandler_cygdrive. This drops
the size to 464 bytes.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Make distinct from AF_LOCAL for testing purposes. This will have
to be reverted as soon as fhandler_socket_unix goes life.
* Move saw_reuseaddr flag back to fhandler_socket status
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Insert another class fhandler_socket_wsock between fhandler_socket
and fhandler_socket_inet/fhandler_socket_local.
Also, add a new method fhandler::is_wsock_socket to allow asking
for sockets in general (is_socket) vs. Winsock-based sockets
(is_wsock_socket).
This allows to develop a new handler_socket_unix class as derived
class from fhandler_socket without any trace of wsock code left
in fhandler_socket.
While this is basically a temporary measure at this time, it may
prove useful for later interoperability with the upcoming Windows 10
AF_UNIX implementation at one point.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Rename DEV_TCP_MAJOR to DEV_SOCK_MAJOR
* Drop FH_TCP, FH_UDP, FH_ICMP in favor of single FH_INET
* Drop FH_UNIX, FH_STREAM, FH_DGRAM in favor of single FH_LOCAL
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
First cut, still incomplete
* fhandler_socket is now base class for other socket classes
* fhandler_socket_inet handles AF_INET and AF_INET6 sockets
* fhandler_socket_local handles AF_LOCAL/AF_UNIX sockets
* finally get rid of fdsock by using set_socket_handle in accept4
* align file-related calls (fstat, fstatvfs, fchown, fchmod, facl)
to Linux.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
- Move definition of windows to POSIX error mapping struct into
cygerrno.h
- Move declaration of winsock errno functions to cygerrno.h
- Input to error mapping functions is DWORD
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Dropping the 'LL' specifier leads to 32 bit truncation during timestamp
computation. Revert it. Exempt MSPERSEC which is used for 32 bit values.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Add fhandler_socket::socket method
Add fhandler_socket::set_socket_handle method, basically duplicating
what fdsock is doing. This is the first step in getting rid of fdsock.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Windows does not remove FILE_ATTRIBUTE_TEMPORARY by itself after a
file has been closed. It's just some attribute which can be set or
removed at will, despite its purpose.
Apparently there are tools out there which use FILE_ATTRIBUTE_TEMPORARY
accidentally or wrongly, even Microsoft's own tools are affected. In
the end, the filesystem is potentially full of files with this attribute
set.
Implement O_TMPFILE files with FILE_ATTRIBUTE_TEMPORARY and
FILE_ATTRIBUTE_HIDDEN set. This combination is pretty unlikely.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Fix an incorrect condition to recognize AF_LOCAL sockets in
file-related functions (fchmod, fchown, fstat, fsttavfs, facl, link).
* Return successfully when called on unnamed or abstract AF_LOCAL sockets,
except link, just as on Linux.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Use 64 bit timestamps
* Use System boot and process start time to compute starttime value per
Linux proc.5 description.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The previous patch introduced a compiler warning on x86.
Given time_t is only 4 bytes on x86 we get a long vs. unsigned long
comparison in timeval_to_ms. Fix it by careful casting.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Redefine NSPERSEC to NS100PERSEC
* Define NSPERSEC as nanosecs per second
* Define USPERSEC as microsecs per second
* Use above constants throughout where appropriate
* Rename to_us to timespec_to_us and inline
* Rename it_bad to timespec_bad and inline
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Rearrange setsockopt/getsockopt into per level/per optname
preprocessing switch, actual call, per level/per optname
postprocessing switch for better readability as well as
extensibility.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Workaround the problem that bind doesn't fail with EADDRINUSE
if a socket with the same local address is still in TIME_WAIT.
Use IP Helper functions to check if such a socket exist and don't
even try this port, if so.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Assuming the address parameter is non-NULL, the test in
cygwin_bindresvport_sa only tests if the address family is
supported at all, which is insufficient.
Check if the incoming address family matches the socket
address family and for being AF_INET in cygwin_bindresvport
since the latter doesn't support any other family.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
We're still using ~SO_REUSEADDR because SO_EXCLUSIVEADDRUSE wasn't
defined in Mingw. But it is in Mingw-w64, so fix it.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This new function returns the name of the calling thread; works for both
cygthreads and pthreads. All calls to cygthread::name(/*void*/) replaced
by calls to mythreadname(/*void*/).
While POSIX mandates that certain socket types shall be defined by the
inclusing of <netinet/in.h>, it also says that this header may also make
visible all <sys/socket.h> symbols. Glibc does this, and without out it,
some packages end up requiring an additional #include <sys/socket.h>.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
POSIX does not mention the inclusion of <sys/time.h> in <sys/socket.h>
or <netinet/in.h>, nor is there anything in the latter two that would
require the former.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
When reading/writing block devices, Cygwin emulates Linux, providing
a byte-exact file position, albeit the underlying device drivers don't.
Unfortunately this only worked correctly for reading. The raw_write
method failed to revalidate the buffer after the read-modify-write
cycle in case len is not a multiple of the sector length. This in
turn resulted in lseek reporting a wrong file pointer.
Also, fix a condition for invalidating the buffer after writing from
a remaining read buffer.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Rounddown incoming addr on a page boundary. Without this, we may end
up with a fork error for private, anonymous maps. The reason is, we
use VirtualAlloc in this case which will potentially overcommit if
addr is not on a page boundary. This isn't taken into account in
bookkeeping, but fixup_mmaps_after_fork will eventually stumble over
this when trying to reproduce the copy-on-write pages: VirtualQuery
returns a region reaching beyond the supposedly allocated address
range and from there it goes downhill.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* change memcpy to internal _memcpy not setting the return value in %rax
* implement all memcpy-like functions as caller to _memcpy, setting %rax
to correct return value beforehand. This is possible because _memcpy
does not use %rax at all
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Since commit 8128f5482f, we have all the
non-tracing functions listed in posixoptions(7). The tracing functions
are gated by their own option, and are obsolecent anyway.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
* Don't use a bool var to store three states (-1, 0, 1).
* Correctly check for NT_SUCCESS of a function returning NTSTATUS.
* Straighten out code for better readability.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Commit 603ef545bd broke this snippet and
commit 5b312b4747 didn't help at all since
FILE_CREATE is exactly *not* the situation the test was originally
supposed to handle.
In fact, none of the open flags used by fhandler_base::open actually
hits this problem anymore, so just drop the code.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Difference to Linux: We can't create files which don't show up
in the filesystem due to OS restrictions. As a kludge, make a
(half-hearted) attempt to hide the file in the filesystem.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
* Fix the maximum number of sockets allowed in the session to 2048,
instead of making it relative to sizeof(wsa_event).
The original choice of 2048 was in order to fit the wsa_events array
in the .cygwin_dll_common shared section, but there is still enough
room to grow there to have 2048 sockets on 64-bit as well.
* Return an error and set errno=ENOBUF if a socket can't be created
due to this limit being reached.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Also updates the fhandler_*::ftruncate implementations to adhere to the same
semantics. The error handling semantics of those syscalls that use
fhandler_*::ftruncate are moved to the implementations of those syscalls (
in particular ftruncate() and friends still set errno and return -1 on error
but that logic is handled in the syscall implementation).
This was called only on filenames in /etc/setup/installed.db, which
are all basenames anyway. Moreover, base wasn't correctly handling
filenames containing colons.
Under some not quite clear conditions, NFS fails to use its
unlink workaround to rename a file to ".nfsXYZ". The problem has been
reproduced with the GAWK testext.awk testcase. To workaround this in
Cygwin, we now call try_to_bin on NFS, too. For some reason NFS doesn't
fail to rename the .cygXYZ file to .nfsXYZ after this Cygwin rename.
Fix comment in unlink_nt accordingly.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The "final trick" code in try_to_bin accidentally never worked on
remote drives because it relies on rootdir. Which isn't set for
remote unlinks. The code now creates a full path for remote files.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The try_to_bin function isn't called for netapp FSes anyway, so testing
for this FS type in the function is moot.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The first argument of gethostbyaddr needs to accept a generic pointer
to be compatible with e.g. struct in_addr *. This caused an issue
compiling krb5-1.15.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
herror etc. are MISC, rcmd etc. are BSD, addrinfo functions are
POSIX.1-2001, except for IDN functionality which is GNU.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
When fork fails, we can use "%s" now with system_sprintf for the errmsg
rather than a (potentially too small) buffer for the format string.
* fork.cc (fork): Use "%s" with system_printf now.
With "%C" format string, argument may convert in up to MB_LEN_MAX bytes.
Relying on sys_wcstombs to add a trailing zero here requires us to
provide a large enough buffer.
* smallprint.c (__small_vsprintf): Use MB_LEN_MAX+1 bufsize for "%C".
The third argument of RtlLookupFunctionEntry actually is documented as
_Inout_opt_ for both x64 and ARM, although generic doc says _Out_ only.
* exceptions.cc (__unwind_single_frame): Initialize hist variable.
In order to avoid the year 2038 problem, define time_t to a signed
integer with at least 64-bits. The type for time_t can be forced to
long with the --enable-newlib-long-time_t configure option or with the
_USE_LONG_TIME_T system configuration define.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
Always use the __-decorated form of an attribute name in public
headers, as the bareword form is in the user's namespace, and we
don't want compilation to break just because the user defines the
bareword to mean something else.
Signed-off-by: Eric Blake <eblake@redhat.com>
- pthread_mutex::lock now takes a PLARGE_INTEGER timeout pointer
and uses that in the call to cygwait.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
- Introduce inline helper pthread_convert_abstime. It converts
an absolute timespec to a Windows LARGE_INTEGER timestamp,
depending on the used clock.
- Use this function from pthread_cond_timedwait and semaphore::timedwait
- Merge semaphore::_wait and semaphore::_timedwait into single _wait
method, taking a LARGER_INTEGER timestamp.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This is copied from musl (MIT license). This is newer and more thorough
than that of FreeBSD currently shipped only on Cygwin.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
For historical reasons peek_console was calling the functions
PeekConsoleInputA and ReadConsoleInputA. However, these functions are
not working correctly under at least codepage 65001 (UTF-8) on systems
prior to Windows 10.
Use PeekConsoleInputW and ReadConsoleInputW instead, which work
correctly under all systems and all codepages.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
FillConsoleOutputCharacterA doesn't work correctly in codepage 65001
(UTF-8). Looks like the character conversion function from ascii char
to unicode char works incorrectly then. Use FillConsoleOutputCharacterW
instead.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
So far we had two functions checking the content of a reparse point,
readdir_check_reparse_point in fhandler_disk_file.cc for the sake of
readdir, and symlink_info::check_reparse_point for the sake of
generic path checking.
* Rename check_reparse_point_target helper to check_reparse_point_string
and convert to static function.
* Create new check_reparse_point_target helper containing the core
reparse point checking code
* Just call check_reparse_point_target from readdir_check_reparse_point
and symlink_info::check_reparse_point and only perform the unique
task in those functions.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
struct sigaction is POSIX.1-1990 but siginfo_t, which is used by its
sa_sigaction member, is POSIX.1b-1993. Therefore it needs to be guarded
as well, and as part of a union, the struct size is protected.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Error messages of regtool can't be read, which are encoded in,
for instance, SHIFT_JIS in Japanese Windows. Fix by using
wide chars instead of multibyte.
When SA_RESTART is not set on a socket, a blocking send() that is
interrupted mid-transition by a signal should return success (and
report just how many bytes were actually transmitted).
The err variable used here was not always guaranteed to be set
correctly in the loop, so better to just remove it and call
WSAGetLastError() explicitly.
There are two common sigpause variants, both of which take an int argument.
If you request _XOPEN_SOURCE or _GNU_SOURCE, you get the System V version,
which removes the given signal from the process's signal mask; otherwise
you get the BSD version, which sets the process's signal mask to the given
value.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
So far Cygwin's readdir returned the inode number of a mount target
in d_ino, rather than the actual inode number of the mount point in
the underlying filesystem. This not only results in a performance
hit if the mount target is a remote FS, it is also not done on other
POSIX systems.
Remove the code evaluating the mount target inode number.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This patch fixes a minor compatibility issue w/ cygwin mount point handling in
readdir(), compared to equivalent behavior of Linux and MacOS. dentry.d_ino
should indicate the INO of the mount point itself, not the target volume root
folder.
Changed return type from readdir_check_reparse_point to uint8_t, to avoid
unnecessarily being implicitly cast to and from a signed int.
Renamed a related local variable "attr" to "oattr" that was eclipsing a member
variable with the same name.
Joe L.
Mingw-w64 (where the code has been taken from) has 4 byte longs
independently of the architecture but x86_64 Cygwin has 64 bit longs.
So use fistpll instead of fistpl on x86_64 Cygwin.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Workaround a bug (or undocumented behaviour) in LCMapStringW:
It's documented(*) that the cchDest parameter is a byte count with
LCMAP_SORTKEY, but a character count otherwise. But the docs don't
state what happens if you combine LCMAP_SORTKEY with LCMAP_BYTEREV.
Tests indicate that LCMAP_SORTKEY treats cchDest as byte count, but
then LCMAP_BYTEREV treats it as char count in the same call. So the
latter swaps twice as much bytes in the destination buffer than the
byte count it returns, which potentially results in writing past the
end of the given output buffer.
Solution: Don't specify LCMAP_BYTEREV in the LCMapStringW(LCMAP_SORTKEY)
call, rather byte swap afterwards.
(*) https://msdn.microsoft.com/en-us/library/windows/desktop/dd318702(v=vs.85).aspx
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This leads to excessive lag when stracing processes if the inferior
process checks the process table. The reason is that ppid isn't set
in the procinfo memory of the dynamically loading strace itself.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Add new SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE flag to
CreateSymbolicLinkW call when running on W10 1703 or later.
Don't do that on older versions to avoid ERROR_INVALID_PARAMETER.
Preliminary, needs testing. There's an off-chance that the
flag results in the same ERROR_INVALID_PARAMETER on 1703 if the
developer settings are not enabled.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
RtlGetNtVersionNumbers returns the build number with some upper bits
set for no apparent reason. The fact that RtlGetNtVersionNumbers is
undocumented doesn't exactly help.
Just filter out the upper WORD for now. If build numbers are in
danger to become 6 digit numbers, re-evaluate.
Always retrieve FileCompressionInformation for non-empty
files if FileStandardInformation returns 0 allocated blocks.
This fixes stat.st_blocks for files compressed with CompactOS method.
Signed-off-by: Christian Franke <franke@computer.org>
Also:
Remove obsolete reference to g-b-s
Remove mention of ancient pre-invisiconsole behaviour of setup scripts
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
Recent versions of gcc are optimizing away the TLS buffer allocated in
main, so we need to tell gcc that it's really used. RtlSecureZeroMemory
accomplishes this while also inlining the memset.
Signed-off-by: Daniel Santos <daniel.santos@pobox.com>
previous commit 4c90db7bc8 introduced
a compile time error because libm/common/s_infconst.c used the remove
__fmath, __dmath, and __ldmath union types.
Since this is very old, and unused for a very long time, just drop the
file and thus the __infinity constants entirely.
Exception: Cygwin exports __infinity from the beginning. There's a very,
VERY low probability that any existing executable or lib still uses this
constant, but we just keep it in for backward compat, nevertheless.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Explicitly format the contents of /proc/loadavg to avoid the decimal point
getting localized according to LC_NUMERIC. Using anything other than '.' is
wrong and breaks top.
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
Ensure that ldd always stops when the exception is flagged as
non-continuable.
Also arrange for ldd to exit with a non-zero exit code if something went
wrong which prevented us from listing all dynamic dependencies.
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
v2:
autoload PerfDataHelper functions
Keep loadavg in shared memory
Guard loadavg access by a mutex
Initialize loadavg to the current load
v3:
Shared memory version bump isn't needed if we are only extending it
Remove unused autoload
Mark inititalized flags as NO_COPY for correct behaviour in fork child
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
_log/_vlog were always called so we always had a function call hit even
if we're not debugging. Expand on the debugging macros so the decision
to call _log/_vlog is done in the caller already. Also, make a log level
difference between syscall_printf and system_printf.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The current implementation is a very simple approach to implement
a statically sized sleep queue. The problem is that this code requires
a certain amount of synchronization because the slots in the queue are
used dynamically. To top it off, the Event objects used for sync'ing
are created and destroyed on demand. This is complicated, slow, and
error prone.
There's also a blatant bug here: The number of slots in the queue was
wrongly computed in size. It was too small if XSI IPC was used a lot.
Make the code more robust. Let the queue have the right size. Every
slot is now used for a specific IPC object. All sync objects (switched
to Semaphores) are only created when first required, but never destroyed.
This reduces the usage of a critical section to the creation of a new
sync object.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The number of threads in the worker pool is fixed so far. This is a
problem in XSI IPC scenarions with an unknown number of consumers.
It doesn't make sense to make the pool very big for a start, but when
the need arises, we need to make sure we can serve the request even if
all other worker threads are in a wait state.
This patch changes threaded_queue to just add another worker thread
if all current workers are busy.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The locale_t type is provided by <xlocale.h> on Linux, FreeBSD, and Darwin.
While, like on some of those systems, it is automatically included by
<locale.h> with the proper feature test macros, its presence under this
particular name is still presumed in real-world software.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
The original dll_init code was living under the wrong assumption that
dll_dllcrt0_1 and in turn dll_list::alloc will be called for each
LoadLibrary call. The same wrong assumption was made for
cygwin_detach_dll/dll_list::detach called via FreeLibrary.
In reality, dll_dllcrt0_1 gets only called once at first LoadLibrary
and cygwin_detach_dll once at last FreeLibrary.
In effect, reference counting for DLLs was completely broken after fork:
parent:
l1 = dlopen ("lib1"); // LoadLibrary, LoadCount = 1
l2 = dlopen ("lib1"); // LoadLibrary, LoadCount = 2
fork (); // LoadLibrary in the child, LoadCount = 1!
child:
dlclose (l1); // FreeLibrary actually frees the lib
x = dlsym (l2); // SEGV
* Move reference counting to dlopen/dlclose since only those functions
have to keep track of loading/unloading DLLs in the application context.
* Remove broken accounting code from dll_list::alloc and dll_list::detach.
* Fix error handling in dlclose.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Windows NUL device returns only the lower 32 bit of the number of
bytes written. Implement a fake write function to ignore the underlying
NUL device.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
So far we copy *_impure_ptr into _main_tls->local_clib if the child
process has been forked from a pthread. But that's not required.
The local_clib area of the new thread is on the stack and the stack
gets copied from the parent anyway (in frok::parent). So we only
have to make sure _main_tls is pointing to the right address and
do the simple post-fork thread init.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This test was broken from the start. It leads to creating a completely
new stack for the main thread of the child process when started from
the main thread of the parent. However, the main thread of a process
can easily running on a completely different stack, if the parent's main
thread was created by calling fork() from a pthread. For an example,
see https://cygwin.com/ml/cygwin/2017-03/msg00113.html
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
We use errno AKA _REENT->_errno since the last century and only set
_impure_ptr->_errno for backward compat. Stop that. Also, remove
the last check for _impure_ptr->_errno in Cygwin code.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Note that this always returns with dli_sname and dli_saddr set to NULL,
indicating no symbol matching addr could be found.
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
POSIX states as follows about pthread_cond_wait:
If a signal is delivered to a thread waiting for a condition variable,
upon return from the signal handler the thread resumes waiting for the
condition variable as if it was not interrupted, or it returns zero
due to spurious wakeup.
Cygwin so far employs the latter behaviour, while Linux and BSD employ
the former one.
Align Cygwin behaviour to Linux and BSD.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
There are certain, very obscure scenarios, which render the Windows
CWD handle inaccessible for reopening. An easy one is, the handle can
be NULL if the permissions of the CWD changed under the parent processes
feet.
Originally we just set errno and returned, but in case of init at
process startup that left the "posix" member NULL and subsequent
calls to getcwd failed with EFAULT.
We now check for a NULL handle and change the reopen approach
accordingly. If that doesn't work, try to duplicate the handle instead.
If duplicating fails, too, we set the dir handle to NULL and carry on.
This will at least set posix to some valid path and subsequent getcwd
calls won't fail. A NULL dir handle is ok, because we already do this
for virtual paths.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This patch alters the behaviour of dll_list::topsort to preserve the
order of dlopen'd units.
The load order of unrelated DLLs is reversed every time fork is called,
since dll_list::topsort finds the tail of the list and then unwinds to
reinsert items. My change takes advantage of what should be undefined
behaviour in dll_list::populate_deps (ndeps non-zero and ndeps and deps
not initialised) to allow the deps field to be initialised prior to the
call and appended to, rather than overwritten.
All DLLs which have been dlopen'd have their deps list initialised with
the list of all previously dlopen'd units. These extra dependencies mean
that the unwind preserves the order of dlopen'd units.
The motivation for this is the FlexDLL linker used in OCaml. The FlexDLL
linker allows a dlopen'd unit to refer to symbols in previously dlopen'd
units and it resolves these symbols in DllMain before anything else has
initialised (including the Cygwin DLL). This means that dependencies may
exist between dlopen'd units (which the OCaml runtime system
understands) but which Windows is unaware of. During fork, the
process-level table which FlexDLL uses to get the symbol table of each
DLL is copied over but because the load order of dlopen'd DLLs is
reversed, it is possible for FlexDLL to attempt to access memory in the
DLL before it has been loaded and hence it fails with an access
violation. Because the list is reversed on each call to fork, it means
that a subsequent call to fork puts the DLLs back into the correct
order, hence "even" invocations of fork work!
An interesting side-effect is that this only occurs if the DLLs load at
their preferred base address - if they have to be rebased, then FlexDLL
works because at the time that the dependent unit is loaded out of
order, there is still in memory the "dummy" DONT_RESOLVE_DLL_REFERENCES
version of the dependency which, as it happens, will contain the correct
symbol table in the data section. For my tests, this initially appeared
to be an x86-only problem, but that was only because the two DLLs on x64
should have been rebased.
Signed-off-by: David Allsopp <david.allsopp@metastack.com>
Match glibc behaviour to expose the public bswap_* macros only with an
explicity #include <byteswap.h>; #include'ing <endian.h> should not expose
them.
Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
Give more elements ids, so random ids aren't assigned to them, so anchors
are stable between builds.
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
Don't set SO_RCVBUF/SO_SNDBUF to fixed values, thus disabling autotuning.
Patch modeled after a patch suggestion from Daniel Havey <dhavey@gmail.com>
in https://cygwin.com/ml/cygwin-patches/2017-q1/msg00010.html:
At Windows we love what you are doing with Cygwin. However, we have
been getting reports from our hardware vendors that iperf is slow on
Windows. Iperf is of course compiled against the cygwin1.dll and we
believe we have traced the problem down to the function fdsock in
net.cc. SO_RCVBUF and SO_SNDBUF are being manually set. The comments
indicate that the idea was to increase the buffer size, but, this code
must have been written long ago because Windows has used autotuning
for a very long time now. Please do not manually set SO_RCVBUF or
SO_SNDBUF as this will limit your internet speed.
I am providing a patch, an STC and my cygcheck -svr output. Hope we
can fix this. Please let me know if I can help further.
Simple Test Case:
I have a script that pings 4 times and then iperfs for 10 seconds to
debit.k-net.fr
With patch
$ bash buffer_test.sh 178.250.209.22
usage: bash buffer_test.sh <iperf server name>
Pinging 178.250.209.22 with 32 bytes of data:
Reply from 178.250.209.22: bytes=32 time=167ms TTL=34
Reply from 178.250.209.22: bytes=32 time=173ms TTL=34
Reply from 178.250.209.22: bytes=32 time=173ms TTL=34
Reply from 178.250.209.22: bytes=32 time=169ms TTL=34
Ping statistics for 178.250.209.22:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 167ms, Maximum = 173ms, Average = 170ms
------------------------------------------------------------
Client connecting to 178.250.209.22, TCP port 5001
TCP window size: 64.0 KByte (default)
------------------------------------------------------------
[ 3] local 10.137.196.108 port 58512 connected with 178.250.209.22 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0- 1.0 sec 768 KBytes 6.29 Mbits/sec
[ 3] 1.0- 2.0 sec 9.25 MBytes 77.6 Mbits/sec
[ 3] 2.0- 3.0 sec 18.0 MBytes 151 Mbits/sec
[ 3] 3.0- 4.0 sec 18.0 MBytes 151 Mbits/sec
[ 3] 4.0- 5.0 sec 18.0 MBytes 151 Mbits/sec
[ 3] 5.0- 6.0 sec 18.0 MBytes 151 Mbits/sec
[ 3] 6.0- 7.0 sec 18.0 MBytes 151 Mbits/sec
[ 3] 7.0- 8.0 sec 18.0 MBytes 151 Mbits/sec
[ 3] 8.0- 9.0 sec 18.0 MBytes 151 Mbits/sec
[ 3] 9.0-10.0 sec 18.0 MBytes 151 Mbits/sec
[ 3] 0.0-10.0 sec 154 MBytes 129 Mbits/sec
Without patch:
dahavey@DMH-DESKTOP ~
$ bash buffer_test.sh 178.250.209.22
Pinging 178.250.209.22 with 32 bytes of data:
Reply from 178.250.209.22: bytes=32 time=168ms TTL=34
Reply from 178.250.209.22: bytes=32 time=167ms TTL=34
Reply from 178.250.209.22: bytes=32 time=170ms TTL=34
Reply from 178.250.209.22: bytes=32 time=169ms TTL=34
Ping statistics for 178.250.209.22:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 167ms, Maximum = 170ms, Average = 168ms
------------------------------------------------------------
Client connecting to 178.250.209.22, TCP port 5001
TCP window size: 208 KByte (default)
------------------------------------------------------------
[ 3] local 10.137.196.108 port 58443 connected with 178.250.209.22 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0- 1.0 sec 512 KBytes 4.19 Mbits/sec
[ 3] 1.0- 2.0 sec 1.50 MBytes 12.6 Mbits/sec
[ 3] 2.0- 3.0 sec 1.50 MBytes 12.6 Mbits/sec
[ 3] 3.0- 4.0 sec 1.50 MBytes 12.6 Mbits/sec
[ 3] 4.0- 5.0 sec 1.50 MBytes 12.6 Mbits/sec
[ 3] 5.0- 6.0 sec 1.50 MBytes 12.6 Mbits/sec
[ 3] 6.0- 7.0 sec 1.50 MBytes 12.6 Mbits/sec
[ 3] 7.0- 8.0 sec 1.50 MBytes 12.6 Mbits/sec
[ 3] 8.0- 9.0 sec 1.50 MBytes 12.6 Mbits/sec
[ 3] 9.0-10.0 sec 1.50 MBytes 12.6 Mbits/sec
[ 3] 0.0-10.1 sec 14.1 MBytes 11.7 Mbits/sec
The output shows that the RTT from my machine to the iperf server is
similar in both cases (about 170ms) however with the patch the
throughput averages 129 Mbps while without the patch the throughput
only averages 11.7 Mbps. If we calculate the maximum throughput using
Bandwidth = Queue/RTT we get (212992 * 8)/0.170 = 10.0231 Mbps. This
is just about what iperf is showing us without the patch since the
buffer size is set to 212992 I believe that the buffer size is
limiting the throughput. With the patch we have no buffer limitation
(autotuning) and can develop the full potential bandwidth on the link.
If you want to duplicate the STC you will have to find an iperf server
(I found an extreme case) that has a large enough RTT distance from
you and try a few times. I get varying results depending on Internet
traffic but without the patch never exceed the limit caused by the
buffering.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The form data sent to the server should be application/x-www-form-urlencoded
This replaces spaces with '+' before being RFC 1738 encoded, so a literal
'+' must be %-encoded also.
See https://cygwin.com/ml/cygwin/2014-01/msg00287.html et seq.
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
The termios code doesn't handle erasing of multibyte characters
in canonical mode, it always erases a single byte. When entering
a multibyte character and then pressing VERASE, the input ends up
with an invalid character.
Following Linux we introduce the IUTF8 input flag now, set by
default. When this flag is set, VERASE or VWERASE will check
if the just erased input byte is a UTF-8 continuation byte. If
so, it erases another byte and checks again until the entire
UTF-8 character has been removed from the input buffer.
Note that this (just as on Linux) does NOT work with arbitrary
multibyte codesets. This only works with UTF-8.
For a discussion what happens, see
https://cygwin.com/ml/cygwin/2017-01/msg00299.html
Sidenote: The eat_readahead function is now member of fhandler_termios,
not fhandler_base. That's necessary to get access to the terminal's
termios flags.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
- Drop virtual_key_code (only used once)
- Convert macros wch and control_key_state to const vars
unicode_char and ctrl_key_state.
- Fix formatting
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Create two new inline functions is_alt_numpad_key(PINPUT_RECORD) and
is_alt_numpad_event(PINPUT_RECORD) which contain the actual checks.
Call these functions from fhandler_console::read and peek_console for
better readability.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
{p}select/{p}poll completely ignored Alt+Numpad key sequences in console
input which results in newer readline using pselect to fail handling such
sequences correctly. See https://cygwin.com/ml/cygwin/2017-01/msg00135.html
During debugging and testing it turned out that while reading console
input, single key presses during an Alt+Numpad sequences where not
ignored, so ultimately a sequence like
Alt-down Numpad-1 Numpad-2 Numpad-3
whihc is supposed to result in a single character in the input stream
will actually result in 4 chars in the input stream, three control
sequences and the actual character.
Both problems should be fixed by this patch.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This patch fixes the following problem:
Commit 9636c426 refactored the pipe code especially to make sure
to call WriteFile only with chunks matching the maximum atomic write
count. This accidentally introduced a small change in behaviour
on blocking pipes due to the success case falling through into the
error case. Rather then writing atomic chunks until all bytes are
written, the code immediately broke from the loop after writing
the first chunk, basically the same as in case of non-blocking
writes. This behaviour is not compliant to POSIX which requires
"Write requests to a pipe or FIFO [...]
* If the O_NONBLOCK flag is clear, a write request may cause the
thread to block, but on normal completion it shall return nbyte."
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
If newfile already exists and is in use, trying to overwrite it with
NtSetInformationFile(FileRenameInformation) fails exactly as if we
don't have the permissions to delete it. Unfortunately the return code
is the same STATUS_ACCESS_DENIED, so we have no way to distinguish
these cases. What we do here so far is to start a transaction to delete
newfile. If this open fails with a transactional error we stop the
transaction and retry opening the file without transaction.
But, here's the problem: If newfile is in use, NtOpenFile(oldfile)
naturally does NOT fail with a transactional error. Rather, the
subsequent call to unlink_nt(newfile) does, because there's another
handle open to newfile outside a transaction. However, the code does
not check if unlink_nt fails with a transactional error and so fails
to retry without transaction.
This patch recifies the problem and checks unlink_nt's status as well.
Refactor code to get rid of goto into another code block.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
A *very* recent Windows build adds more code to the preamble of
RtlGetCurrentDirectory_U() so that the previous heuristic failed to find
the call to the locking routine.
This only affects the 64-bit version of ntdll, where the 0xe8 byte is
now found at offset 40, not the 32-bit version. However, let's just
double the area we search for said byte for good measure.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Returns the process's environment concatenated into a single block of
null-terminated strings, along with the length of the environment block.
Adds an associated PICOM_ENVIRON commune_process handler.
win32env_to_cygwenv handles converting wchar to char and some other
minor taks. Optionally it handles converting any paths in variables to
posix paths.
This will be useful for implementing /proc/<pid>/environ
commit 67fd2101 introduced a bad bug. Changing sys_privs to a static
area and just returning a pointer is nice... *if* the calling code doesn't
call free() on it. Make sure callers check pointer for sys_privs and
refrain from calling free, if so.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
GNU no longer encourages the use of documentation mirrors, to avoid
referring to obsolete documentation. Also www.fsf.org/manual/ is
just a redirect to www.gnu.org/manual/
Links to using-utils.html #fragments are no longer correct as each utility
is now a separate page, since 646745cb.
indiana.edu seems to have moved XLiveCD information, without a redirect.
Linking to clean_setup.pl on cygwin.com doesn't work, as direct downloads
aren't allowed, so instead state where it can be found on a mirror.
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
Include ntsecapi.h where required and just redefine RtlGenRandom
correctly in the ntsecapi.h wrapper.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
In preparation of exporting getentropy/getrandom to userspace, rearrange
code a bit:
- Define RtlGenRandom in ntdll.h.
- Drop calls to getentropy in favor of RtlGenRandom (fhandler_socket,
fhandler_dev_random).
- Add try/except blocks in fhandler_dev_random to return EFAULT rather
than crashing if buffer pointer is invalid.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
NtOpenFile/NtCreateFile on non-existent paths on network drives has a
bug. Assuming a path Z:\dir\file. Further assuming that Z:\dir does
not exist.
The first NtOpenFile("Z:\dir\file") correctly returns
STATUS_OBJECT_PATH_NOT_FOUND. Subsequent calls incorrectly
return STATUS_OBJECT_NAME_NOT_FOUND.
This appears to be some kind of caching behaviour. Waiting a while
before repeating the call correctly returns STATUS_OBJECT_PATH_NOT_FOUND
again.
This patch works around the observed misbehaviour.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
So far, when converting from POSIX to Windows notation, cygwin_conv_path
fails to check for .exe suffix, so /path/foo did not return /path/foo.exe
even if this file exists.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The original code only skipped the "./", but missed to test if more
trailing slashes are present. This in turn leads to invalid conversion.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Don't allow signal 0 in signal(2), sigaction(2), siginterrupt(3).
Don't allow any signal in sigqueue(3) but explicitely handle
signal 0 as in kill(2).
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Provide <memory.h> for all standard Newlib targets and remove
Cygwin-specific header. Most POSIX like systems provide this historic
header.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
This makes it possible provide operating system specific types for
<pthread.h>. It is in line with the FreeBSD header file structure and
allows a future cleanup of <pthread.h> to not expose unrelated things
via <sys/types.h> and <unistd.h>. Glibc uses the similar
<bits/pthreadtypes.h> for this purpose.
Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>
This not only simplifies the code but also fixes potential
memory corruption
Fixes Coverity CID 66952
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Update the getconf utility to support the new flag as well as
_PC_POSIX_PERMISSIONS and _PC_POSIX_SECURITY. These were previously
unsupported, probably as an oversight.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Additionally to eccefd97, we need to ensure the exception handler is
installed for the _ljfault used to implement _try/_except to get called.
Also use the correct macro for x86 conditional compilation.
Addresses https://cygwin.com/ml/cygwin/2016-09/msg00143.html
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
Long-standing problem in one of the corner cases of rename(2):
If we rename a directory a check is performed to see if newpath is
identical to oldpath or a subdir of oldpath. This check is
(accidentally? no hints anywhere in ChangeLogs or code) performed
case-insensitive for as long as we use Unicode paths and NT functions.
This leads to the problems described in
https://cygwin.com/ml/cygwin/2016-09/msg00264.html
Change this to be conditional case-sensitive as all other checks but
let's take this with a grain of salt. There may be corner-cases in
this corner-case which require to chek parts of the path always
case-insensitive. Off the top of my head I can't construct such a
case but that's no proof they don't exist :}
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Commit d16a5630 dropped usage of cygheap's locale functions
in favor of local on-the-fly usage of UTF-8 instead of ASCII.
This allowed to use the current local rather than a fixed
system-wide locale set at startup time. d16a5630 just missed
to add the ASCII->UTF-8 conversion in the console as well.
Fixes https://cygwin.com/ml/cygwin/2016-10/msg00000.html
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
On 09/02/2016 11:03 AM, Corinna Vinschen wrote:
> On Sep 2 10:46, Michael Haubenwallner wrote:
>> On 09/01/2016 03:32 PM, Corinna Vinschen wrote:
>>> You could just use the global variable program_invocation_name. If in
>>> doubt, use the Windows path global_progname and convert it to full POSIX
>>> via cygwin_conv_path.
>>
>> Patch updated, using global_progname now.
>
> Looks good and you're right to do it this way since I just noticed
> that program_invocation_name may return a relative pathname.
Yep.
> Btw., in other calls which require the full POSIX path we use
> mount_table->conv_to_posix_path instead of cygwin_conv_path (see
> e. g. fillout_pinfo()). It's a bit faster. Maybe something for a
> followup patch.
No problem - attached.
This renders the original patch 4/4 valid again.
> Note for some later improvement: I really wonder why we don't store
> the absolute POSIX path of the current executable globally yet...
Same here.
Thanks!
/haubi/
>From f7255edd33cb4abe34f27188aab8dccdfa5dd2a0 Mon Sep 17 00:00:00 2001
From: Michael Haubenwallner <michael.haubenwallner@ssi-schaefer.com>
Date: Wed, 31 Aug 2016 18:05:11 +0200
Subject: [PATCH 3/4] dlopen: on x/lib search x/bin if exe is in x/bin
citing https://cygwin.com/ml/cygwin-developers/2016-08/msg00020.html
> Consider the file /usr/bin/cygz.dll:
> - dlopen (libz.so) success
> - dlopen (/usr/bin/libz.so) success
> - dlopen (/usr/lib/libz.so) fails
* dlfcn.c (dlopen): For dlopen("x/lib/N"), when the application
executable is in "x/bin/", search for "x/bin/N" before "x/lib/N".
Rather than searching all search dirs per one basename,
search for all basenames within per one search dir.
pathfinder.h (check_path_access): Interchange dir- and basename-loops.
Instead of find_exec, without changing behaviour use new pathfinder
class with new allocator_interface around tmp_pathbuf and new vstrlist
class.
* pathfinder.h (pathfinder): New file.
* vstrlist.h (allocator_interface, allocated_type, vstrlist): New file.
* dlfcn.cc (dlopen): Avoid redundant GetModuleHandleExW with RTLD_NOLOAD
and RTLD_NODELETE. Switch to new pathfinder class, using
(tmp_pathbuf_allocator): New class.
(get_full_path_of_dll): Drop.
The new functionality to set the thread name for debugging purposes
creates exception debugging events. These are printed out when running
strace. Since these exceptions have nothing to do with real exceptions
but are, like breakpoint execptions, expected and non-fatal, don't print
exception info for them.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
On Windows 8.1 and later, the NetUserChangePassword call apparently
doesn't accept the usual "\\server" string anymore, but requires to
use the "domain" instead, otherwise it emits en error code 1265,
ERROR_DOWNGRADE_DETECTED. Since this is accepted by pre-8.1 as well,
use the domain indiscriminately when calling NetUserChangePassword
from passwd(1).
While at it, do some minor cleanup in passwd.c.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Keep __ctype_ptr__ available on Cygwin only, for backward compatibility
with existing apps referencing it via the ctype macros.
Otherwise initialize __global_locale.ctype_ptr and __C_locale.ctype_ptr
and use them throughout.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Wrap SetThreadName()'s call to RaiseException() in __try/__except/__endtry,
so that if the attached debugger doesn't know about MS_VC_EXCEPTION (e.g.
current gdb and probably strace as well) and continues exception processing,
we ignore it, rather than dying due an unhandled exception.
Also remove an unnecessary cast in the RaiseException() invocation.
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
GDB since commit 24cdb46e [1] can report and use these names.
Add utility function SetThreadName(), which sends a thread name to the
debugger.
Use that:
- to set the default thread name for main thread and newly created pthreads.
- in pthread_setname_np() for user thread names.
- for helper thread names in cygthread::create()
- for helper threads which are created directly with CreateThread.
Note that there can still be anonymous threads, created by system or
injected DLLs.
[1] https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=24cdb46e9f0a694b4fbc11085e094857f08c0419
This patch adds pthread_getname_np and pthread_setname_np.
These were added to glibc in 2.12[1] and are also present in some form on
NetBSD and several UNIXes.
The code is based on NetBSD's implementation with changes to better match
Linux behaviour.
Implementation quirks:
* pthread_setname_np with a NULL pointer segfaults (as linux)
* pthread_setname_np returns ERANGE for names longer than 16 characters (as
linux)
* pthread_getname_np with a NULL pointer returns EFAULT (as linux)
* pthread_getname_np with a buffer length of less than 16 returns ERANGE (as
linux)
* pthread_getname_np truncates the thread name to fit the buffer length.
This guarantees success even when the default thread name is longer than 16
characters, but means there is no way to discover the actual length of the
thread name. (Linux always truncates the thread name to 16 characters)
* Changing program_invocation_short_name changes the default thread name (on
linux, it has no effect on the default thread name)
I'll leave it up to you to decide if any of these matter.
This is implemented via class pthread_attr to make it easier to add
pthread_attr_[gs]etname_np (present in NetBSD and some UNIXes) should it
ever be added to Linux (or we decide we want it anyway).
[1] https://sourceware.org/git/?p=glibc.git;a=blob;f=NEWS
This routine makes a call to fabs instead of fabsl(), causing truncation.
Clang complains (warning: absolute value function 'fabs' given an argument of type 'long double' but has parameter of type 'double' which may cause truncation of value).
Signed-off-by: David Wohlferd <dw@LimeGreenSocks.com>
The R language has some hacks specifically for mingw-w64 that
were caused by our handling of NaNs in sqrt(x). R uses a
special valued NaN to mean 'Not Available' and expects it to
be retained through various calculations. Our sqrt(x) doesn't
do this, instead it normalises such a NaN (retaining sign).
From:
http://wwwf.imperial.ac.uk/~drmii/M3SC_2016/IEEE_2008_4610935.pdf
"6.2.3 NaN propagation
An operation that propagates a NaN operand to its result and
has a single NaN as an input should produce a NaN with the
payload of the input NaN if representable in the destination
format."
There might even be a slight speed-up from this too.
Thanks to Duncan Murdoch for finding the reference.
Change nl_langinfo to nl_langinfo_l using locale given as argument.
Remove outdated TRANSITION_PERIOD_HACK. The codeset is stored in
the locale for quite some time now. For !MB_CAPABLE targets, just
return "US_ASCII" as codeset.
Implement nl_langinfo by calling nl_langinfo_l. Export nl_langinfo_l
from Cygwin DLL and bump minor API version number.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The former __locale_charset always fetched the current locale's charset.
We need the per-locale charset, too, in future. Rename __locale_charset
to __current_locale_charset and change __locale_charset to take a
locale_t as parameter. Accommodate througout.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Commit 6f3943b erroneously removed the `#ifdef _COMPILING_NEWLIB'
guarding the __getreent inline function. This patch ignored the
fact that config.h is included when building applications, and the
code in question requires internal, auto-generated headers to be
available which are not exposed to user-space.
Reinstantiate defined(_COMPILING_NEWLIB) test and alternatively
check for defined (__INSIDE_CYGWIN__), otherwise we'd have to
reinstantiate the __getreent macro in cygtls.h which is really
confusing.
While testing it turned out that a low number of source codes inside
Cygwin won't see the inline __getreent due to a missing __INSIDE_CYGWIN__
definition. For malloc.cc this was actually deliberate to get different
definitions from including cygmalloc.h. Change this by defining
__INSIDE_CYGWIN__ in malloc.cc but changing the test in cygmalloc.h
to test for defined(DLMALLOC_VERSION). This might need a change if we
ever get around to replace dlmalloc with a newer, more threading-aware
malloc implementation.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Commit 97d0449 left a bit to be desired. First, the fact that any
new-style ACL couldn't be "standard ACL" anymore was very much over
the top. On one hand Admins and SYSTEM ACEs are not supposed to be
masked, but on the other hand we *must* create the CLASS_OBJ
because otherwise we don't have information about masking the
execute perms for both groups. The ACL would also fail aclcheck.
And while get_posix_access now returns the "is standard acl" flag,
it hasn't been utilized by set_created_file_access. Rather,
set_created_file_access has simply continued to check for
nentries > MIN_ACL_ENTRIES, which led to all kinds of weird group
and CLASS_OBJ perms. The new code now always manipulates CLASS_OBJ
perms if a CLASS_OBJ is present, and it always manipulates group perms
if the ACL has been marked as "standard" ACL.
Another problem (not related to commit 97d0449) is the order
get_posix_access adds missing perms. CLASS_OBJ perms are computed
*before* missing GROUP_OBJ perms have been added. Thus the CLASS_OBJ
perms could be too tight and led to additional, buggy DENY ACEs.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This partially reverts commit 10a30e7 as far as the Cygwin version of
the __getreent function is concerned. Remove _COMPILING_NEWLIB guard
only allowing to use __getreent inline function when building newlib,
since we wan to use it in Cygwin as well.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Stefan Assmann <sassmann@redhat.com>
This reverts commit 4de8596. It worked around a problem which was
actually introduced by patch 10a30e7 a few weeks ago. Rather than
adding special code to the newlib version of __getreent, the followup
patch reinstantiates the original, Cygwin-only implementation of
__getreent.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Stefan Assmann <sassmann@redhat.com>
No real domain, no DC, no infos via NetUserGetInfo... nothing. Just nothing.
Use fixed uid 0x1000 (4096) for AzureAD user and gid 0x1001 (4097) for
AzureAD group. Note that this group is part of the user token, but it's
not the primary group. The primary group SID is, unfortunately, the
user's SID.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
So far the lib function __getreent always returned _impure_ptr. On Cygwin
this is only correct after _impure_ptr got initialized. The inline
function in include/cygwin/config.h always returns the right _reent ptr,
though.
After introducing per-thread locales, the __getreent function is called
prior to initialization of _impure_ptr (from dll_crt0_0) to access the
locale pointer, which leads to a crash.
Fix the __getreent lib function for Cygwin to return the correct _reent
pointer all the time. Rename inline function to __inline_getreent
and introduce a macro __getreent calling the inline function. Change
the lib function __getreent to call __inline_getreent on Cygwin.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The default UI language returned by GetUserDefaultUILanguage does not
necessarily reflect what the user really wants. E. g., the system could
be en_US, but the desired language is en_CA, without having a CA langpack
installed.
Changing the settings under "Languages" and changing the keyboard layout
is only affecting the so-called "Input language", while what's returned
by GetUserDefaultUILanguage is the "Display language". Changing the
latter requires installing MUI langpacks.
Thus, we introduce a way to fetch the "Input language" using the -i or
--input option.
Also clean up documentation of locale(1).
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Corinna Vinschen
Mark Geisert
David McFarland
Sebastian Huber
Ken Brown
J.H. van de Water
Yaakov Selkowitz
Takashi Yano
Sergejs Lukanihins
Thomas Wolff
David Macek
Brian Inglis
Jon Turney
Xiaofeng Liu
Erik M. Bray
Yaakov Selkowitz
Michael Haubenwallner
Achim Gratz
Eric Blake
Fujii Hironori
Joe_Lowe
Christian Franke
Daniel Santos
David Allsopp
Kenneth Nellis
Johannes Schindelin
Erik M. Bray
David Wohlferd
Ray Donnelly