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>
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.
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>
Corinna Vinschen
Sebastian Huber
Erik M. Bray
Ken Brown
Jon Turney
Michael Haubenwallner
Yaakov Selkowitz
David Wohlferd
Ray Donnelly