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2021-04-07fenv: fix up stub file comment, drop symlinks from descriptiongithub/topic/shared_arch_headerstopic/shared_arch_headersDavid Macek1-10/+10
also slightly fixed up formatting
2021-04-07Cygwin: fix fenv.h includesCorinna Vinschen2-2/+2
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-04-07Cygwin: don't export _feinitialise from newlibCorinna Vinschen5-12/+8
Use the more official fesetenv(FE_DFL_ENV) from _dll_crt0, thus allowing to drop the _feinitialise declaration from fenv.h. Provide a no-op _feinitialise in Cygwin as exportable symbol for really old applications when _feinitialise was called from mainCRTStartup in crt0.o. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-04-07fenv: drop Cygwin-specific implementation in favor of newlib codeCorinna Vinschen5-646/+16
Drop the Cygwin-specific fenv.cc and fenv.h file and use the equivalent newlib functionality now, so we have at least one example of a user for this new mechanism. fenv.c: allow _feinitialise to be called from Cygwin startup code fenv.h: add declarations for fegetprec and fesetprec for Cygwin only. Fix a comment. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-04-07fenv: move shared x86 fenv.c to libm/machine/shared_x86Corinna Vinschen3-473/+480
Include this file from both sharing architectures, i386 and x86_64. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-04-07fenv: Move shared x86 sys/fenv.h from x86_64 to shared_x86Corinna Vinschen2-1/+0
drop matching symlink in i386 Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-04-07fenv: add missing declarations to x86 fenv.hCorinna Vinschen1-0/+5
feenableexcept, fedisableexcept and fegetexcept were accidentally missing in the x86 fenv.h Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-04-07configure.host: define shared ix86 and x86_64 directoryCorinna Vinschen1-4/+4
Add a directory libc/machine/shared_x86 to share header files between ix86 and x86_64 architectures. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-04-07Add build mechanism to share common header files between machinesCorinna Vinschen38-9/+124
So far the build mechanism in newlib only allowed to either define machine-specific headers, or headers shared between all machines. In some cases, architectures are sufficiently alike to share header files between them, but not with other architectures. A good example is ix86 vs. x86_64, which share certain traits with each other, but not with other architectures. Introduce a new configure variable called "shared_machine_dir". This dir can then be used for headers shared between architectures. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-04-06Cygwin: select: Fix FD_CLOSE handlingCorinna Vinschen2-10/+23
An FD_CLOSE event sets a socket descriptor ready for writing. This is incorrect if the FD_CLOSE is a result of shutdown(SHUT_RD). Only set the socket descriptor ready for writing if the FD_CLOSE is indicating an connection abort or reset error condition. This requires to tweak fhandler_socket_wsock::evaluate_events. FD_CLOSE in conjunction with FD_ACCEPT/FD_CONNECT special cases a shutdown condition by setting an error code. This is correct for accept/connect, but not for select. In this case, make sure to return with an error code only if FD_CLOSE indicates a connection error. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-04-06Cygwin: select: don't set ready for exception on socket shutdownCorinna Vinschen1-6/+1
So far select wrongly sets the descriptor as ready for exception when a shutdown occurs. This is entirely non-standard. Only set this bit on an out-of-band event. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-04-06Cygwin: pty: Use atexit() instead of hooking exit() for GDB.Takashi Yano3-34/+70
- This patch utilizes atexit() instead of hooking exit() to clean up pseudo console stuff when debugging non-cygwin app using GDB.
2021-04-06Cygwin: pty: Use find_exec() rather than path_conv::check().Takashi Yano1-10/+12
- With this patch, find_exec() rather than path_conv::check() is used in order to enable searching executable file in the path.
2021-04-06Cygwin: fhandler: Rename handles from XXX_cyg/XXX to XXX/XXX_nat.Takashi Yano6-233/+215
- Currently, functions/variables regarding the handles for cygwin apps are with "_cyg", and those of handles for non-cygwin apps are without "_cyg", such as get_handle_cyg() and get_handle(). This patch renames these to the names without "_nat" and with "_nat" respectively, such as get_handle() and get_handle_nat().
2021-03-29Cygwin: bump DLL version to 3.2.1Corinna Vinschen1-1/+1
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-03-23Cygwin: add "app execution aliases" treatment to release notescygwin-3_2_0-releaseCorinna Vinschen2-0/+10
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-03-23Cygwin: Treat Windows Store's "app execution aliases" as symbolic linksJohannes Schindelin1-0/+40
When the Windows Store version of Python is installed, so-called "app execution aliases" are put into the `PATH`. These are reparse points under the hood, with an undocumented format. We do know a bit about this format, though, as per the excellent analysis: https://www.tiraniddo.dev/2019/09/overview-of-windows-execution-aliases.html The first 4 bytes is the reparse tag, in this case it's 0x8000001B which is documented in the Windows SDK as IO_REPARSE_TAG_APPEXECLINK. Unfortunately there doesn't seem to be a corresponding structure, but with a bit of reverse engineering we can work out the format is as follows: Version: <4 byte integer> Package ID: <NUL Terminated Unicode String> Entry Point: <NUL Terminated Unicode String> Executable: <NUL Terminated Unicode String> Application Type: <NUL Terminated Unicode String> Let's treat them as symbolic links. For example, in this developer's setup, this will result in the following nice output: $ cd $LOCALAPPDATA/Microsoft/WindowsApps/ $ ls -l python3.exe lrwxrwxrwx 1 me 4096 105 Aug 23 2020 python3.exe -> '/c/Program Files/WindowsApps/PythonSoftwareFoundation.Python.3.7_3.7.2544.0_x64__qbz5n2kfra8p0/python.exe' Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2021-03-23Cygwin: Allow executing Windows Store's "app execution aliases"Johannes Schindelin1-0/+7
The Windows Store version of Python (and apparently other Windows Store applications) install a special reparse point called "app execution alias" into the user's `PATH`. These applications can be executed without any problem, but they cannot be read as if they were files. This trips up Cygwin's beautiful logic that tries to determine whether we're about to execute a Cygwin executable or not: instead of executing the application, it will fail, saying "Permission denied". Let's detect this situation (`NtOpenFile()` helpfully says that this operation is not supported on this reparse point type), and simply skip the logic: Windows Store apps are not Cygwin executables (and even if they were, it is unlikely that they would come with a compatible `cygwin1.dll` or `msys-2.0.dll`). This fixes https://github.com/msys2/MSYS2-packages/issues/1943 Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2021-03-23Cygwin: pty: Rename input/output named pipes.Takashi Yano via Cygwin-patches1-6/+6
- Currently, names of output pipes are "pty%d-to-master" and "pty%d- to-master-cyg" and names of input pipes are "pty%d-to-slave" and "pty%d-from-master". With this patch, these pipes are renamed to "pty%d-to-master-nat", "pty%d-to-master", "pty%d-from-master-nat" and "pty%d-from-master" respectively.
2021-03-09Cygwin: pty: Transfer input only if the stdin is a pty.Takashi Yano via Cygwin-patches2-4/+15
- The commit 12325677f73a did not fix enough. With this patch, more transfer_input() calls are skipped if stdin is redirected or piped.
2021-03-09Cygwin: update release notes for 3.2.0, part 5Corinna Vinschen1-0/+3
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-03-09Cygwin: update release notes for 3.2.0, part 4Corinna Vinschen2-2/+4
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-03-08Cygwin: pty: Transfer input for native app only if the stdin is pcon.Takashi Yano via Cygwin-patches1-8/+10
- Currently, transfer input is triggered even if the stdin of native app is not a pseudo console. With this patch it is triggered only if the stdin is a pseudo console.
2021-03-08Cygwin: update release notes for 3.2.0Ken Brown2-0/+40
2021-03-08Cygwin: pty: Attach to stub process when non-cygwin app inherits pcon.Takashi Yano via Cygwin-patches1-1/+1
- If two non-cygwin apps are started simultaneously, attaching to pseudo console sometimes fails. This is because the second app trys to attach to the process not started yet. This patch avoids the issue by attaching to the stub process rather than the other non-cygwin app.
2021-03-08Cygwin: update release notes for 3.2.0, part 2Corinna Vinschen2-0/+23
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-03-08Cygwin: update release notes for 3.2.0Corinna Vinschen1-0/+7
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-03-08Cygwin: console, pty: Stop ignoring Ctrl-C by IGNBRK.Takashi Yano via Cygwin-patches2-4/+4
- Perhaps current code misunderstand meaning of the IGNBRK. As far as I investigated, IGNBRK is concerned with break signal in serial port but there is no evidence that it has effect to ignore Ctrl-C. This patch stops ignoring Ctrl-C by IGNBRK for non-cygwin apps.
2021-03-08Cygwin: pty: Discard input already accepted on interrupt.Takashi Yano via Cygwin-patches5-1/+31
- Currently, input already accepted is not discarded on interrupt by VINTR, VQUIT and VSUSP keys. This patch fixes the issue.
2021-03-08Revert "Cygwin: Make sure newer apps get uname_x even when loading uname ↵Corinna Vinschen2-10/+0
dynamically" This reverts commit 532b91d24e9496c7988b2b1dda7fc0e8b161f782. It turned out that this patch has undesired side effects. To wit, if a newer, post-uname_x executable was linked against or loading an older, pre-uname_x DLL, and this DLL called uname. This call would jump into the old uname with the old struct utsname as parameter, but given the newer executable it would get redirected to uname_x. uname_x in turn would overwrite stack memory it should leave well alone, given it expects the newer, larger struct utsname. For the entire discussion see the thread starting at https://cygwin.com/pipermail/cygwin/2021-February/247870.html and continuing in March at https://cygwin.com/pipermail/cygwin/2021-March/247930.html For a description where we're coming from, see https://cygwin.com/pipermail/cygwin/2021-March/247959.html While we *could* make the scenario in question work by patching dlsym, the problem would actually be the same, just for dynamic loading. In the end, we're missing the information, which Cygwin version has been used when building DLLs. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
2021-03-05Regenerate lib/posix/Makefile.inJeff Johnston1-3/+16
2021-03-05Cygwin: console: Fix restoring console mode failure.Takashi Yano via Cygwin-patches2-4/+11
- Restoring console mode fails in the following scenario. 1) Start cygwin shell in command prompt. 2) Run 'exec chcp.com'. This patch fixes the issue.
2021-03-05Cygwin: pty: Fix a race issue in startup of pseudo console.Takashi Yano via Cygwin-patches1-4/+12
- If two non-cygwin apps are started simultaneously and this is the first execution of non-cygwin apps in the pty, these occasionally hang up. The cause is the race issue between term_has_pcon_cap(), reset_switch_to_pcon() and setup_pseudoconsole(). This patch fixes the issue.
2021-02-25Cygwin: simplify linkat with AT_EMPTY_PATHKen Brown1-8/+16
linkat(olddirfd, oldpath, oldname, newdirfd, newname, AT_EMPTY_PATH) is supposed to create a link to the file referenced by olddirfd if oldname is the empty string. Currently this is done via the /proc filesystem by converting the call to linkat(AT_FDCWD, "/proc/self/fd/<olddirfd>", newdirfd, newname, AT_SYMLINK_FOLLOW), which ultimately leads to a call to the appropriate fhandler's link method. Simplify this by using cygheap_fdget to obtain the fhandler directly.
2021-02-25Cygwin: fix linkat(2) on sockets that are not socket filesKen Brown2-4/+12
If linkat(2) is called with AT_EMPTY_PATH on an AF_LOCAL or AF_UNIX socket that is not a socket file, the current code calls fhandler_disk_file::link in most cases. The latter expects to be operating on a disk file and uses the socket's io_handle, which is not a file handle. Fix this by calling fhandler_disk_file::link only if the fhandler_socket object is a file (determined by testing dev().isfs()). Also fix the case of a socket file opened with O_PATH by setting the fhandler_disk_file's io_handle.
2021-02-25Cygwin: fix facl on sockets that are not socket filesKen Brown2-4/+10
If facl(2) is called on an AF_LOCAL or AF_UNIX socket that is not a socket file, the current code calls fhandler_disk_file::facl in most cases. The latter expects to be operating on a disk file and uses the socket's io_handle, which is not a file handle. Fix this by calling fhandler_disk_file::facl only if the fhandler_socket object is a file (determined by testing dev().isfs()).
2021-02-25Cygwin: fix fchown on sockets that are not socket filesKen Brown2-4/+10
If fchown(2) is called on an AF_LOCAL or AF_UNIX socket that is not a socket file, the current code calls fhandler_disk_file::fchown in most cases. The latter expects to be operating on a disk file and uses the socket's io_handle, which is not a file handle. Fix this by calling fhandler_disk_file::fchown only if the fhandler_socket object is a file (determined by testing dev().isfs()).
2021-02-25Cygwin: fix fchmod on sockets that are not socket filesKen Brown2-4/+10
If fchmod(2) is called on an AF_LOCAL or AF_UNIX socket that is not a socket file, the current code calls fhandler_disk_file::fchmod in most cases. The latter expects to be operating on a disk file and uses the socket's io_handle, which is not a file handle. Fix this by calling fhandler_disk_file::fchmod only if the fhandler_socket object is a file (determined by testing dev().isfs()).
2021-02-25Cygwin: fix fstatvfs on sockets that are not socket filesKen Brown2-4/+15
If fstatvfs(2) is called on an AF_LOCAL or AF_UNIX socket that is not a socket file, the current code calls fhandler_disk_file::fstatvfs in most cases. The latter expects to be operating on a disk file and uses the socket's io_handle, which is not a file handle. Fix this by calling fhandler_disk_file::fstatvfs only if the fhandler_socket object is a socket file (determined by testing dev().isfs()).
2021-02-25Cygwin: fix fstat on sockets that are not socket filesKen Brown2-10/+10
If fstat(2) is called on an AF_LOCAL or AF_UNIX socket that is not a socket file, the current code calls fstat_fs. The latter expects to be operating on a disk file and uses the socket's io_handle, which is not a file handle. Fix this by calling fstat_fs only if the fhandler_socket object is a file (determined by testing dev().isfs()).
2021-02-25RISC-V: Fix optimized strcmp on big endianMarcus Comstedt1-4/+36
2021-02-25Set __IEEE_BIG_ENDIAN for big endian RISC-VMarcus Comstedt1-0/+4
2021-02-24Cygwin: facl: fail with EBADF on files opened with O_PATHKen Brown1-0/+5
This is in the spirit of the Linux requirement that file operations like fchmod(2), fchown(2), and fgetxattr(2) fail with EBADF on files opened with O_PATH.
2021-02-24Cygwin: AF_UNIX: allow opening with the O_PATH flagKen Brown2-0/+25
This was done for the fhandler_socket_local class in commits 3a2191653a, 141437d374, and 477121317d, but the fhandler_socket_unix class was overlooked.
2021-02-24Bump config.guess and config.subKito Cheng2-478/+739
Hi: RISC-V has added big-endian support recently, which require config.* stuff update, and we'll send further patch for fix big-endian build, so I believe this fundamental change should upstream first. Import upstream 2021-01-25. Upstream sha1 6faca61810d335c7837f320733fe8e15a1431fc2
2021-02-22Cygwin: console: Prevent NULL pointer access in close().Takashi Yano via Cygwin-patches1-1/+1
- There seems to be a case that shared_console_info is not set yet when close() is called. This patch adds guard for such case.
2021-02-22Cygwin: pty: Fix segfault caused when tcflush() is called.Takashi Yano via Cygwin-patches1-2/+5
- After commit 253352e796ff9ec9a447e5375f5bc3e2b92b5293, mc (midnight commander) crashes with segfault if the shell is bash. This is due to NULL pointer access in read(). This patch fixes the issue. Addresses:: https://cygwin.com/pipermail/cygwin/2021-February/247870.html
2021-02-19Cygwin: FIFO: temporarily keep a conv_handle in syscalls.cc:openKen Brown1-3/+19
When a FIFO is opened, syscalls.cc:open always calls fstat on the newly-created fhandler_fifo. This results from a call to device_access_denied. To speed-up this fstat call, and therefore the open(2) call, use PC_KEEP_HANDLE when the fhandler is created. The resulting conv_handle is retained until after the fstat call if the fhandler is a FIFO; otherwise, it is closed immediately.
2021-02-19Cygwin: fstat_helper: always use handle in call to get_file_attributeKen Brown1-2/+1
Previously, the call to get_file_attribute for FIFOs set the first argument to NULL instead of the handle h returned by get_stat_handle, thereby forcing the file to be opened for fetching the security descriptor in get_file_sd(). This was done because h might have been a pipe handle rather than a file handle, and its permissions would not necessarily reflect those of the file. That situation can no longer occur with the new fhandler_fifo::fstat introduced in the previous commit.
2021-02-19Cygwin: define fhandler_fifo::fstatKen Brown2-0/+24
Previously fstat on a FIFO would call fhandler_base::fstat. The latter is not appropriate if fhandler_fifo::open has already been called (and O_PATH is not set), for the following reason. If a FIFO has been opened as a writer or duplexer, then it has an io_handle that is a pipe handle rather than a file handle. fhandler_base::fstat will use this handle and potentially return incorrect results. If the FIFO has been opened as a reader, then it has no io_handle, and a call to fhandler_base::fstat will lead to a call to fhandler_base::open. Opening the fhandler a second time can change it in undesired ways; for example, it can modify the flags and status_flags. The new fhandler_fifo::fstat avoids these problems by creating an fhandler_disk_file and calling its fstat method in case fhandler_fifo::open has already been called and O_PATH is not set.
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