Handle [:<character-class>:] expressions in range brackets.
TODO: Collating symbols [.<collsym>'.] and Equivalence class
expressions [=<equiv-class>=] are recognized but skipped as if
they are not present at all.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Handle [:<character-class>:] expressions in range brackets.
TODO: Collating symbols [.<collsym>'.] and Equivalence class
expressions [=<equiv-class>=] are recognized but skipped as if
they are not present at all.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
- call mbrtowi instead of mbrtowc
- drop Cygwin-only surrogate handling from wgetnext and xmbrtowc since
it's encapsulated in mbrtowi.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
So far the input to __collate_range_cmp was handled as a wchar_t.
Change that to handle it as wint_t holding a UTF-32 value and
add creating surrogate pairs for the call to wcscoll.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Given how UTF-16 isn't capable to hold all Unicode chars in a single
wchar_t, we need a function returning a wint_t value representing
a UTF-32 value for comparison functions. Fortunately the important
wide character functions like towupper/towlower, isw<class>, iswctype,
etc, already take wint_t values and newlib handles them as UTF-32.
If only we had switched wchar_t to 32 bit way back when... sigh.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Spaces are filtered out by PathMatchSpecA so they can't
be used as pattern anchors. Overwrite all spaces with
commas and fix the search expresion accordingly.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Avoid the mistake fixed in the preceeding commit by passing
the mode_t argument by reference. This also affects a couple
other functions calling get_posix_access in turn.
Fixes: bc444e5aa4 ("Reapply POSIX ACL changes.")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
commit bc444e5aa4 introduced a call to get_posix_access()
with a NULL pointer for the mode_t parameter because the value
is not needed later on... entirely ignoring the fact that the
mode_t bits are checked for the object being a directory.
In turn, the get_posix_access() call never checked for default
ACEs and returned only the standard ACEs. Thus, every chmod call
on a directory dropped the default ACEs from its permissions, as
well as the default NULL deny-ACE used to store specific bits.
It got also impossible to set the sgid bit on directories.
Fixes: bc444e5aa4 ("Reapply POSIX ACL changes.")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Older coreutils created directories with mode bits filtered through
umask. Newer coreutils creates directories with full permissions,
0777 by default.
This new coreutils behaviour uncovered the fact that default ACEs for
newly created directories were not filtered by umask starting with
commit bc444e5aa4.
Fix it by applying umask on the default ACEs.
Fixes: bc444e5aa4 ("Reapply POSIX ACL change.")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
TODO: implement options to print all deps, all build-deps,
all packages depending on packages matching the search string
and so on.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
A recent binutils version introduced `libsframe` and made it a
dependency of `libbfd`. This caused a linker problem in the MSYS2
project, and once Cygwin upgrades to that binutils version it would
cause the same problems there.
Let's preemptively detect the presence of `libsframe` and if detected,
link to it in addition to `libbfd`.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Previously, SNDCTL_DSP_SETFRAGMENT was just a fake. In this patch,
it has been implemented to allow latency control in some apps.
Reviewed-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
- if the user has no perms to write to /etc/setup, don't try
to fetch user homedir from Cygwin (crashes galore). Use
LOCALAPPDATA path instead.
- info is more rpm like
- print info of installed package
- added info selectors --inst, --curr, --prev, --test
- add installation date
TODO:
- Human-readable filesize
- url and license needs to be added to setup.ini yet
-
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
In preparation of new functionality, split fetching data
from cygwin.com out of the package_grep() function.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
fhandler_dev_dsp (OSS) has a problem that waitforallsent(), which is
called from close(), falls into infinite loop if another thread calls
write() accidentally after close(). This patch fixes the issue.
Reviewed-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
The list of invalid chars for server names differs from the
list of invalid chars for share names. Apart from that,
we don't allow control chars in both kinds of names.
Fixes: 6338d2f24a ("Cygwin: mount: allow any valid character in UNC paths")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The current code only allows server and share names to
start with ASCII chars [a-zA-Z0-9],, which is not correct.
Rather, check for a valid share character.
Fixes: 1fd5e000ac ("import winsup-2000-02-17 snapshot")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The commit af8a7c13b5 has a problem that fsync returns EINVAL for
block device. This patch treats block devices as a special case.
https://cygwin.com/pipermail/cygwin/2023-January/252916.html
Fixes: af8a7c13b5 ("Cygwin: fsync: Return EINVAL for special files.")
Reported-by: Yano Ray <yanorei@hotmail.co.jp>
Reviewed-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
adding <target>_LDFLAGS overrides AM_LDFLAGS and thus fails to
build cygcheck and strace statically. Fix it.
Fixes: 8d318bf142 ("Cygwin: disable high-entropy VA for cygcheck and strace")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Previously, fhandler_dev_dsp (OSS) has a problem that fcntl() does
not take effect at all. This patch fixes the issue.
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
Reviewed-by: Corinna Vinschen <corinna@vinschen.de>
Eventually move user heap initialization to memory_init.
The call order is not changed. Drop a now useless comment.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The new loop in open_shared has a subtil performance problem.
Next_address is bumped only if mapping at this address
failed. Every subsequent call to open_shared has a high probability
having to call MapViewOfFileEx twice, because next_address is still
set to the address of the last successful mapping.
Avoid this by bumping next_address every time.
While at it, fix a comment.
Fixes: dc0fe7742b ("Cygwin: open_shared: try harder allocating a shared region")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
With the previous commit 9ddd48ee1b ("Cygwin: /proc/<PID>/maps:
print real shared region addresses"), the real addresses of
the standard shared regions (cygwin, user, myself, shared console)
are read from the printed process itself. We don't need fixed
addresses anymore, so drop the definitions and simplify open_shared.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
So far, the addresses printed for the shared regions of a process
were faked. The assumption was that the shared regions are always
in the same place in all processes, so we just printed the addresses
of the current process. This is no safe bet. The only safe bet is
the address of the cygheap. So keep track of the addresses in the
cygheap and read the addresses from the cygheap of the observed
processes. Add output for the shared console.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
It's not a good idea to enable high-entropy VA for tools loading the
Cygwin DLL dynamically. The addresses used by HEVA tend to collide with
fixed address areas managed by Cygwin.
Fixes: 60675f1a7e ("Cygwin: decouple shared mem regions from Cygwin DLL")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
For fixed regions (cygwin/user/myself/shared console), try fixed
address first. Fallback to non-fixed region. Don't even try fixed
address if the Cygwin DLL gets dynamically loaded.
For non-fixed regions, try to allocate in a loop within the area
from SHARED_REGIONS_ADDRESS_LOW to SHARED_REGIONS_ADDRESS_HIGH.
Fixes: 60675f1a7e ("Cygwin: decouple shared mem regions from Cygwin DLL")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Fix comments accordingly.
This is in preparation for a change in open_shared, handling shared
regions more cleanly.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
For ages, open_shared uses the shared_locations parameter as
output to indicate if the mapping for a shared region has been
created or just opened. Split this into two parameters. Use
the shared_locations parameter as input only, return the creation
state of the mapping in a bool reference parameter.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The number of args multiplied by 4 was only required for
32 bit x86 to construct the symbol name correctly. Drop it.
In the assembler code, split the numerical values for "notimp"
and "err" into half words for cleaner layout.
Fix description accordingly.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
vmstat from proc-ps-4.0.x prints "Unable to create system stat structure"
if the /proc/cpuinfo output fails to contain topology info. While
Linux always prints topology info if the kernel has been built with
CONFIG_SMP, Cygwin only prints topology info if the CPU is known to
be multi-core (i. e., the HT feature flag is set).
Fix that by printing topology info all the time, even for single-core
CPUs.
Fixes: e0d48debed ("Fix /proc/cpuinfo topology and cache size info")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
- add '-' option
- make group argument optional
- drop ability to take a numerical group argument
- simplify usage output to bare minimum
- Add manpage and documentation
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This tool allows to change the primary group for a child process.
The new primary group MUST be part of the supplementary group list
of newgrp's user token.
The command started as child process is specified on the command line.
If it's missing, start the user's default shell with the new primary
group.
TODO: Implement '-' option.
Add command description to documentation.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Default mutex type is PTHREAD_MUTEX_NORMAL.
Attempting to unlock an unowned mutex of that type is specified as
undefined behaviour, not returning EPERM.
mutex7e verfies that attempting to unlock an unowned mutex of type
PTHREAD_MUTEX_ERRORCHECK returns EPERM.
Build all the testcase executables directly using automake, rather than
passing the compiler information into DejaGnu to have it build them.
(This means you get build avoidance for these executables, so they only
get built once, rather than every time you run the test, and makes it
much easier to run them in isolatation against the installed Cygwin,
which is really nice to have when trying to fix broken tests...)
Rename the 'cygrun' subdirectory to 'mingw', and build all the testsuite
MinGW executables there.
Drop sample-miscompile.c (testing that compile failure is detected is
perhaps useful, but not here...)
objdir isn't a predefined output variable in Automake (any more?), so
this was just using the absolute path /testsuite as the test's temporary
directory. Use builddir instead.
So far the capability bits were stored in the .cygwin_dll_common
R/W section because we overwrite the is_server bit. Just don't.
Move the bit to class wincapc instead and define all wincaps
bitfields const.
Fixes: 8937c103ed ("* wincap.cc (all wincaps): Store in .cygwin_dll_common section same as wincap. Add comment to explain why.")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
_pinfo::ctty has two special values other than the device id of
the allocated ctty:
-1: CTTY is not initialized yet. Can be associated with the TTY
which is associated with the session leader.
-2: CTTY has been released by setsid(). Can be associate only with
new TTY which is not associated with any other session as CTTY,
but cannot be associate with the TTYs already associated with
other sessions.
This patch adds the comments in some source files.
Suggested-by: Corinna Vinschen <corinna@vinschen.de>
Signedoff-by: Takashi Yano <takashi.yano@nifty.ne.jp>
The commit 25c4ad6ea5 did not fix the CTTY behavior enough. For
example, in the following test case, TTY will be associated as
a CTTY on the second open() call even though the TTY is already
CTTY of another session. This patch fixes the issue.
#include <unistd.h>
#include <sys/fcntl.h>
int main()
{
if (fork () == 0) {
char *tty = ttyname(0);
int fd;
setsid();
fd = open(tty, O_RDWR);
close(fd);
fd = open(tty, O_RDWR);
usleep (60000000L);
}
return 0;
}
Fixes: 25c4ad6ea5 ("Cygwin: pinfo: Align CTTY behavior to the
statement of POSIX.")
Reviewed-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
After the commit 30add3e6b3, the problem:
https://cygwin.com/pipermail/cygwin/2022-December/252759.html
occurs rarely. It seems that myself_pinfo should be initialized
where the timing before child_copy() and after cygheap allocation.
This patch moves the initialization there.
Fixes: 30add3e6b3 ("Cygwin: exec: don't access cygheap before it's
initialized")
Reported-by: Brian Inglis <Brian.Inglis@Shaw.ca>
Reviewed-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
The code computing the mask of pending signals used the per-queued
signal TLS pointer without checking it for NULL. Fix this by using
the process-wide signal mask in that case.
Fixes: 195169186b ("Cygwin: wait_sig: allow to compute process-wide mask of pending signals")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Since 4e7817498e, we're just running the tests against the installed
DLL. We're arranging to put the build directory on the path, but since
it doesn't contain cygwin1.dll (since it's built with a different name
and renamed on installation), that doesn't have any effect.
Arrange to place the just-built DLL into a directory which the testsuite
can place on it's path (while running the test, but not while compiling
it).
Also fix any remaining references to cygwin0.dll in testsuite,
documentation and comments.
Fixes: 4e7817498e ("Cygwin: Makefile: Drop all the "test dll" considerations")
The code generating the signal info in _pinfo::siginfo() and in
commune_process() are doing the same thing. Create a local static
function commune_process_siginfo() to have the code in one place
only. Remove a useless sigpending() call.
Fixes: 9a3c058f66 ("Cygwin: /proc/<PID>/status: Fill SigPnd, SigBlk and SigIgn values with life")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Previously, the console device could not be accessed from other terminals.
Due to this limitation, GNU screen and tmux cannot be opened in console.
With this patch, console device can be accessed from other TTYs, such as
other consoles or ptys. Thanks to this patch, screen and tmux get working
in console.
Reviewed-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
The devices /dev/conin,conout,console were wrongly visible from ptys,
though they are inaccessible. This is because fhandler_console::exists()
returns true due to existing invisible console. This patch makes these
devices invisible from ptys.
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
POSIX states "A terminal may be the controlling terminal for at most
one session."
https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap11.html
However, in cygwin, multiple sessions could be associated with the
same TTY. This patch aligns CTTY behavior to the statement of POSIX.
Reviewed-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
https://cygwin.com/pipermail/cygwin/2022-December/252737.html
If the less is started from non-cygwin shell and window size is
changed, it will hang-up when quitting. The cause of the proglem is
that less uses longjump() in signal handler. If the signal handler
is called while cygwin is acquiring the mutex, cygwin loses the
chance to release mutex. With this patch, the mutex is released
just before calling kill_pgrp() and re-acquired when kill_pgrp()
returns.
Reported-by: Gregory Mason <grmason@epic.com>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
After 90236c3a2c, the testsuite is failing, as the cygwin0.dll
referenced by the implib that testsuite programs are linked with doesn't
exist anymore.
We don't need to make and link the testsuite with a specially named DLL,
as the cygwin DLL (since 526b0fbca3) takes into consideration the path
it's executing from to define separate "Cygwin installations", which
don't interact.
Fixes: 90236c3a2c ("Cygwin: Makefile: build new-cygwin1.dll in a single step")
Commit c1023ee353 introduced a split between mount flags and
path flags. It didn't initialize symlink_info::path_flags in
path_conv::check, because that's done in symlink_info::check.
However, there are two code paths expecting symlink_info::path_flags
being already initialized and both skip symlink_info::check.
Make sure symlink_info::path_flags is initalized to 0 early in
path_conv::check.
Fixes: c1023ee353 ("Cygwin: path_conv: decouple path_types from mount types")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Rather than guessing, based on just the presence of libbfd, add an
explicit configuration option, to build dumper or not, defaulting to
building it.
This might have some use when bootstrapping Cygwin for a new
architecture, or when building your own Cygwin-targetted cross-compiler,
rather than installing one from the copr, along with the dependencies of
libbfd.
Tweak slightly to allow implementing entire {w}mem{p}{cpy,move}
family:
Add WIDE macro processing for wmem* and POST macro processing for
memp* functions.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The complicated build routine was only required because we needed
the .cygheap section at the end of the file, and the debug sections
broke this. Now that the cygheap is out of the way, we really don't
have to do this anymore, and the build can just generate a DLL with
integrated debug info.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Make sure to create a new cygwin_version.c if it either doesn't
exist yet, or if it would be different from the former file.
This avoids unnecessary DLL rebuilding.
Fixes: 97eb64b909 ("Cygwin: uname: generate default release string from git as well")
Fixes: 4949a82cde ("Cygwin: uname: fix building in non-git source dir")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Move the drive substitution code after the call to
GetFinalPathNameByHandleW into a local function revert_virtual_drive
and add code to handle non-remote virtual drives, i. e., those
created with the subst command. (Try to) make sure that virtual
drives are never treated like symlinks.
Fixes: 19d59ce75d ("Cygwin: path_conv: Rework handling native symlinks as inner path components")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
https://cygwin.com/pipermail/cygwin/2022-December/252628.html
After the commit 9e4d308cd5, the performance of read from non-cygwin
pipe has been degraded. This is because select_sem mechanism does not
work for non-cygwin pipe. This patch fixes the issue.
Fixes: 9e4d308cd5 ("Cygwin: pipe: Adopt FILE_SYNCHRONOUS_IO_NONALERT
flag for read pipe.")
Reported-by: tryandbuy <tryandbuy@proton.me>
Reviewed-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
Until Cygwin 3.3.6, we define __LARGE64_FILES unconditionally, so we
were using the type __sFILE64 even for 64 bit. That was lazy and wrong.
so commit 2902b3a09e ("Cygwin: drop requirement to build newlib's
stdio64") tried to fix that.
Unfortunately this patch forgot to take the exposure of the typename
__sFILE64 in userspace into account. This leads to trouble in C++ due
to name mangling.
Commit 0f376ae220 tried to fix this by just renaming __sFILE to
__sFILE64 by using a macro. While __sFILE and __sFILE64 are the same
size, they are not exactly congruent.
To avoid backward compatibility problems, make sure to define FILE
as the real __sFILE64, and make sure that __sFILE is not defined at
all on Cygwin.
Fixes: 0f376ae220 ("Cygwin: rename __sFILE to __sFILE64 for backward
compatibility")
Fixes: 2902b3a09e ("Cygwin: drop requirement to build newlib's stdio64")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Until Cygwin 3.3.6, we define __LARGE64_FILES unconditionally, so we
were using the type __sFILE64 even for 64 bit. That was lazy and wrong.
so commit 2902b3a09e ("Cygwin: drop requirement to build newlib's
stdio64") tried to fix that.
Unfortunately this patch forgot to take the exposure of the typename
__sFILE64 in userspace into account. This leads to trouble in C++ due
to name mangling.
Fix this by redefining __sFILE to __sFILE64. The type name is very much
internal, so it doesn't really matter, except for the fact that it needs
to stay backward compatible so as not to break building against C++ libs
built under older versions of Cygwin.
Fixes: 2902b3a09e ("Cygwin: drop requirement to build newlib's stdio64")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
commit 97eb64b909 broke building outside of a git dir, because
the git describe command would fail. Fix this by checking if
we're in a git tree at all and just generate an empty string
as version string. Use this in uname_x to generate a fallback
version.
Fixes: 97eb64b909 ("Cygwin: uname: generate default release
string from git as well"
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
When building a release with cygport, we get uname version info
from cygport, which in turn gets version info from `git describe'.
During development, the release info for local builds was not
that helpful yet. Fix that, by creating version info from
`git describe' if CYGPORT_RELEASE_INFO isn't given. Make sure to
always force rebuild of the version info to pick up source file
changes as well as git actions.
Rearrange code slightly to generate machine info first, release info
after that. Use snprintf to generate release string safely.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Commit 188d5f6c9a erroneously moved the mcountFunc.S file to the
TARGET_FILES target, rather than keeping it in GMON_FILES. The
result is that the __fentry__ entry point is now entirely undefined,
so `gcc -pg' is broken.
Create new target-specific GMON_TARGET_FILES and move mcountFunc.S
into it. Add $(GMON_TARGET_FILES) to GMON_FILES.
Fixes: 188d5f6c9a ("Cygwin: x86_64: add wmemset assembler entry point")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
DiscardVirtualMemory, PrefetchVirtualMemory and
GetSystemTimePreciseAsFileTime are available since
Windows 8.1. Merge PseudoConsole functions into
kernel32 function block.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Only required for Windows 7.
This in turn allows to drop the helper_pid and related
methods from fhandler_pty_common.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Only required for Windows 7.
This allows to remove fhandler_pipe::get_query_hdl_per_system(),
too.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Using ulinks here makes the result work on cygwin.com only, while
xrefs to FAQs are creating realtive links. Add xreflabel where
appropriate.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
fetch_account_from_windows shortcuts the current user in that
it takes the user's domain SID and just adds the matching RID
from the token's primary group to create a group SID.
How wrong this is can be very simply reproduced:
Assuming you run a native process, like cmd, with primary group
set to the Administrators builtin group. Run Cygwin's id(1) as
child process. id(1) will print a non-existent group as primary
group and also add it to the group list.
This can only be avoided by not special casing the current user
and thus not creating a group SID from partial information.
Fixes: 6cc7c925ce ("(pwdgrp::fetch_account_from_windows): Default primary group for the
current user to primary group from user token.")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
internal_getlogin overwrites the process token primary group if it
differs from the primary group as stored in the passwd DB.
However, this also overwrites the primary group of the process if
it has been deliberately changed by a former process (e. g., newgrp),
and the current process has a non-Cygwin process as parent.
Our docs claim we restrict overwriting the primary group to local,
non-domain user accounts anyway, and it was actually meant this way.
So check for exactly that before overwriting the primary group
in the token: It's only allowed if the user is a local account
and the primary group in the token is still the default group
"None".
Fixes: 6cc7c925ce ("(internal_getlogin): Give primary group
from user token more weight.")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Originally the code was written to allow three ways of prefixing
accounts and to freely define a domain/account separator. This code
has been disabled even before being officially released, and it was
never re-enabled. Given there has been no complaints for eight years
now, drop this code eventually. Just add a macro to define the
domain/account separator statically.
Fixes: cc332c9e27 ("(cygheap_pwdgrp::nss_init_line): Disable db_prefix
and db_separator settings. Add comment")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This is a long-standing thinko.
When you exec a process, dll_crt0_0 in the child process calls
child_info_spawn::handle_spawn(). handle_spawn() initialises the
cygheap.
Now consider calling strace. Strace is a non-Cygwin process dynamically
loading cygwin1.dll via LoadLibrary. This in turn initializes the DLL:
- dll_crt0_0 finds that the process it attaches to has been exec'd, so
child_info_spawn::handle_spawn() is called.
- If the DLL is being dynamically loaded, handle_spawn() calls
child_info_spawn::get_parent_handle(). This in turn tries to set
the moreinfo->myself_pinfo value inside the cygheap to NULL.
- However, at this time, the cygheap has not yet been initialized. This
only occurs in the cygheap_fixup_in_child() call after get_parent_handle()
returns.
--> SEGV
This thinko never had a negative side effect, because the cygheap was
pre-allocated at DLL load time until commit 2f9b8ff00c ("Cygwin:
decouple cygheap from Cygwin DLL"). With 2f9b8ff00c, the cygheap
actually doesn't exist until after the call to cygheap_fixup_in_child().
Fix this problem by moving the assignment after the call to
cygheap_fixup_in_child().
Fixes: 3de7be4c1d ("* DevNotes: Add entry cgf-000007. [...]")
Fixes: 2f9b8ff00c ("Cygwin: decouple cygheap from Cygwin DLL")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
After decoupling cygheap from the DLL loading address, the check
for a different _cygheap_start has gone. So the matching string
check in multiple_cygwin_problem is obsolete now.
Fixes: 2f9b8ff00c ("Cygwin: decouple cygheap from Cygwin DLL")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
In commit 2dab880c96 I did a mistake when
I copied the new fhandler_serial::switch_modem_lines() from my modified
3.3.6 branch to the current master and I left a copy paste error. This
patch fixes that error.
Fixes: 2dab880c96 ("Cygwin: fix TIOCMBIS/TIOCMBIC not working when using usbser.sys")
- Previously, we have two tty.cc, one is winsup/cygwin/tty.cc and
the other is winsup/cygwin/fhandler/tty.cc. This is somewhat
confusing. This patch renames fhandler/tty.cc to fhandler/pty.cc.
When creating regular Cygwin test releases we need a way to
automate unambiguous version information based on the output
of `git describe'. Allow to inject a release string via a
preprocessor macro CYGPORT__RELEASE_INFO. Change the default
release info to recognize a local, non-distro build.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
We're going to switch to regular test releases, rather than the
old, handcrafted snapshots method.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
- The codes related to pty and console in spawn.cc have been moved
into the new class fhandler_termios::spawn_worker, and make spawn.cc
call them. The functionality has not been changed at all.
In winsup/cygwin/fhandler/serial.cc, the function
fhandler_serial::switch_modem_lines() is called when TIOCMBIS/TIOCMBIC
are used in an ioctl() call.
This function uses EscapeCommFunction() for setting and resetting RTS
and DTR signals of a serial port. Unfortunately, this function does not
work on USB CDC devices.
This is not a true bug of CYGWIN but an issue of the usbser.sys driver,
from Windows 2000 to the latest Windows 11. Both 32bit and 64bit
versions of the operating system are affected. Actually, I tested
EscapeCommFunction() also when using a real UART, based on the
traditional 16550 driver and it works fine. Using thirdy party CDC
drivers, like the one provided by FTDI for their USB bridge chips,
probably also works.
However, it is also possible to drive the RTS/DTR signals by writing
their state with SetCommState(), which proved to be working fine all
types of connection. This is also a better solution for handling these
signals since RTS/DTR can be set at the same time rather than having two
separate calls with a visible delay between them.
Report 0 instead of 268435455 (i.e. 0xFFFFFFF) in the tty field of
/proc/*/stat for processes without a controlling terminal. This is what
the procps utility expects when selecting or excluding such processes.
This adds an extra section to the stackdump, which lists the loaded
modules and their base address. This is perhaps useful as it makes it
immediately clear if RandomCrashInjectedDll.dll is loaded...
Future work: It seems like the 'InMemoryOrder' part of
'InMemoryOrderModuleList' is a lie?
> Loaded modules
> 000100400000 segv-test.exe
> 7FFF2AC30000 ntdll.dll
> 7FFF29050000 KERNEL32.DLL
> 7FFF28800000 KERNELBASE.dll
> 000180040000 cygwin1.dll
> 7FFF28FA0000 advapi32.dll
> 7FFF29F20000 msvcrt.dll
> 7FFF299E0000 sechost.dll
> 7FFF29B30000 RPCRT4.dll
> 7FFF27C10000 CRYPTBASE.DLL
> 7FFF28770000 bcryptPrimitives.dll
This adds an additional column to the stack trace in a .stackdump file,
which gives the stack frame return address as a module name+offset. This
makes it a possible to convert the address to a function name without
having to guess what module the address belongs to.
> Stack trace:
> Frame Function Args
> 0007FFFFCC30 0001004010E9 (000180048055, 000180046FA0, 000000000002, 00018031E160) segv-test.exe+0x10E9
> 0007FFFFCD30 0001800480C1 (000000000000, 000000000000, 000000000000, 000000000000) cygwin1.dll+0x80C1
> 0007FFFFFFF0 000180045C86 (000000000000, 000000000000, 000000000000, 000000000000) cygwin1.dll+0x5C86
> 0007FFFFFFF0 000180045D34 (000000000000, 000000000000, 000000000000, 000000000000) cygwin1.dll+0x5D34
> End of stack trace
Loosely based on this patch [1] by Brian Dessent.
[1] https://cygwin.com/pipermail/cygwin-patches/2008q1/006306.html
Every time the cygheap is initialized, that is, on each fork
or exec, cygheap_init() *again* computes the bucket size values
and stores them in the cgyheap, albeit they are always the
same values anyway.
Make bucket_val a local const array, statically initialized
instead.
Fixes: 61522196c7 ("* Merge in cygwin-64bit-branch.)"
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Corinna Vinschen
Jon Turney
Johannes Schindelin
Takashi Yano
Brian Inglis
Carlo Bramini
Andy Koppe