Add FS_PINNED_FL and FS_UNPINNED_FL flags and handle them with
mode bits 'p' and 'u' in chattr(1) and lsattr(1).
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Chances are high that Cygwin recalls offline files from remote
storage, even if the file is only accessed during stat(2) or
readdir(3).
To avoid this
- make sure Cygwin is placeholder-aware,
- open files in path_conv handling, as well as in stat(2)/readdir(3)
scenarios with FILE_OPEN_NO_RECALL, and
- during symlink checking or testing for executablility, don't even
try to open the file if one of the OFFLINE attributes is set.
Reported-by: Marcin Wisnicki <mwisnicki@gmail.com>
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This patch eliminates verbose NtQueryObject() calls in the procedure
to get query_hdl by storing pipe name into fhandler_base::pc when
the pipe is created. fhandler_pipe::temporary_query_hdl() uses the
storedpipe name rather than the name retrieved by NtQueryObject().
Suggested-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
Non-cygwin app may call ReadFile() for empty pipe, which makes
NtQueryObject() for ObjectNameInformation block in fhandler_pipe::
get_query_hdl_per_process. Therefore, do not to try to get query_hdl
for non-cygwin apps.
Addresses: https://github.com/msys2/msys2-runtime/issues/202
Fixes: b531d6b06e ("Cygwin: pipe: Introduce temporary query_hdl.")
Reported-by: Alisa Sireneva, Johannes Schindelin <Johannes.Schindelin@gmx.de>
Reviewed-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
The open() call for console sometimes fails if the console owner
process is closing the console by close() at the same time. This
is due to mismatch state of con.owner variable and attaching state
to the console. With this patch, checking con.owner and attaching
to con.owner sequence in open(), and resetting con.owner and freeing
console sequence in close() are guarded by output_mutex to avoid
such a race issue.
Addresses: https://cygwin.com/pipermail/cygwin/2024-March/255575.html
Fixes: 3721a756b0 ("Cygwin: console: Make the console accessible from other terminals.")
Reported-by: Kate Deplaix <kit-ty-kate@outlook.com>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
The upcoming POSIX issue 8 will require that posix_getdents after
fork() will pick up at the right spot, independently of being
called in the parent or in the child process. Remove the expression
clearing out the attached DIR after fork.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
In the condition that console setup for CTTY and close run at the
sametime, accessing shared console memory which is already unmapped
may occur. With this patch, to avoid this race issue, shared console
memory which belongs to contorolling terminal (CTTY) is kept mapped
as before.
Addresses: https://cygwin.com/pipermail/cygwin/2024-February/255561.html
Fixes: 3721a756b0 ("Cygwin: console: Make the console accessible from other terminals.")
Reported-by: Kate Deplaix <kit-ty-kate@outlook.com>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
Previously, three similar callback fuctions were used in console
code. This patch unifies these functions to ease maintenance cost.
Fixes: 8aad3a7ede ("Cygwin: console: Fix a problem that minor ID is incorrect in ConEmu.")
Suggested-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
All three warnings produced with -Og are false positives.
But given we're using -Werror unconditionally it's better
to be safe than sorry.
Reported-by: Kevin Ushey <kevinushey@gmail.com>
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Previously, minor device number of console was not assigned correctly
in ConEmu environment. This is because console window of ConEmu is
not enumerated by EnumWindows(). This patch fixes the issue.
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
In pty master_thread, 6 handles are duplicated when CallNamedPipe()
requests that. Though some of them are not used so should be closed,
they were not. This causes handle leak potentially.
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
If non-cygwin process is started in pty, closing from_master_nat
pipe handle was missing in fhandler_pty_slave::input_transfer().
This occured because the handle was duplicated but not closed.
https://github.com/msys2/msys2-runtime/issues/198
Fixes: 29431fcb5b ("Cygwin: pty: Inherit typeahead data between two input pipes.")
Reported-by: Hakkin Lain
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
If disable_master_thread flag is set between the code checking that
flag not be set and the code acquiring input_mutex, input record is
processed once after setting disable_master_thread flag. This patch
prevents that.
Fixes: d4aacd50e6 ("Cygwin: console: Add missing input_mutex guard.")
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
If non-cygwin process is executed in console, the exit code is not
set correctly. This is because the stub process for non-cygwin app
crashes in fhandler_console::set_disable_master_thread() due to NULL
pointer dereference. This bug was introduced by the commit:
3721a756b0 ("Cygwin: console: Make the console accessible from
other terminals."), that the pointer cons is accessed before fixing
when it is NULL. This patch fixes the issue.
Fixes: 3721a756b0 ("Cygwin: console: Make the console accessible from other terminals.")
Reported-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
On Linux, __progname and program_invocation_short_name are just
different exported names of the same string. Do the same in Cygwin.
This requires to tweak the mkglobals_h so as not to touch the
EXPORT_ALIAS expression. Also, use the base variable
program_invocation_short_name throughout. __progname is just
the export for getopt.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
- Basically maintain a hidden DIR* inside fhandlers.
- lseek has to be tweaked to allow basic seeking on the directory
descriptor.
- the current implementation does not keep the dir positions
between duplicated descriptor in sync. In fact, every descriptor
keeps its own copy of the DIR* and after dup/fork/exec, the
directory position is reset to 0, i. e., to the start of the
directory, as if rewinddir() has been called on the new descriptors.
While this behaviour isn't yet covered by the Issue 8 draft,
a bug report along these lines exists and will probably be
picked up for TC1.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The out pointer is only used if data_chunk_count is > 0,
so there's no reason to set it to NULL in the error case.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Split fhandler_disk_file::fallocate into multiple methods, each
implementing a different aspect of fallocate(2), thus adding
FALLOC_FL_PUNCH_HOLE and FALLOC_FL_ZERO_RANGE handling.
For more correctly implementing posix_fallocate(3) semantics, make
sure to re-allocate holes in the given range if the file is sparse.
While at it, change the way checking when to make a file sparse.
The rule is now, make file sparse if the hole created by the action
spans at least one sparse block, taking the allocation granularity
of sparse files into account.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
write(2) sparsifies a file after an lseek far enough beyond EOF.
Let pwrite(2) sparsify as well if offset is far enough beyond EOF.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
open(2) implements O_TRUNC by just reducing the size of the file
to 0, to make sure EAs stay available.
Turns out, file sparseness is not removed this way either, so add
code to do just that.
Fixes: 603ef545bd ("* fhandler.cc (fhandler_base::open): Never open files with FILE_OVERWITE/FILE_OVERWRITE_IF.")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
First cut of the new, Linux-specific fallocate(2) function.
Do not add any functionality yet, except of basic handling
of FALLOC_FL_KEEP_SIZE.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
also, take mode flags parameter instead of just a bool.
Introduce __FALLOC_FL_TRUNCATE mode flag as internal flag to
indictae being called from ftruncate(2).
This is in preparation of an upcoming change introducing the
Linx-specific fallocate(2) call.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The fhandler method ftruncate returns either EISDIR if it has been
called on directories, or EINVAL if called on files other than
regular files. This matches what ftruncate(2) is supposed to return,
but it doesn't match posix_fallocate(3), which is supposed to return
ENODEV in both cases.
To accomplish that, return ENODEV from fhandler_base::ftruncate()
and convert it to EINVAL in ftruncate(2). In posix_fallocate(3),
convert EISDIR to ENODEV.
Fixes: 7636b58590 ("* autoload.cc (NtSetInformationFile): Define.")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The code introducing the lseek(2) code for the GNU extensions
SEEK_DATA and SEEK_HOLE accidentally checks if the mount point
has the "sparse" flag set and, if not, emulates SEEK_DATA/SEEK_HOLE
per the Linux specs.
However, the mount point "sparse" flag only determines whether
files should be made sparse or not. Files may be sparse independently
of that, obviously.
Fix that by checking for the FILE_ATTRIBUTE_SPARSE_FILE attribute
instead.
Fixes: edfa581d3c ("Cygwin: lseek: implement SEEK_DATA and SEEK_HOLE for files")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
No longer drop ranges of identical link names. Append '#0, #1, ...'
to each name instead. Enhance charset allowed in label names.
No longer ignore null volume serial numbers.
Signed-off-by: Christian Franke <christian.franke@t-online.de>
The new directories '/dev/disk/by-label' and '/dev/disk/by-uuid'
provide symlinks for each disk related volume label and serial
number:
'VOLUME_LABEL' -> '../../sdXN'
'VOLUME_SERIAL' -> '../../sdXN'
Signed-off-by: Christian Franke <christian.franke@t-online.de>
The new directory '/dev/disk/by-drive' provides symlinks for each
disk related drive letter:
'x' -> '../../sdXN'
The new directory '/dev/disk/by-voluuid' provides symlinks for each
disk related storage volume:
'MBR_SERIAL-OFFSET' -> '../../sdXN'
'VOLUME_GUID' -> '../../sdXN'
Both directories provide Windows specific information and do not
exist on Linux.
Signed-off-by: Christian Franke <christian.franke@t-online.de>
The new directory '/dev/disk/by-partuuid' provides symlinks for each
MBR or GPT disk partition:
'MBR_SERIAL-OFFSET' -> '../../sdXN'
'GPT_GUID' -> '../../sdXN'
Signed-off-by: Christian Franke <christian.franke@t-online.de>
The new directory '/dev/disk/by-id' provides symlinks for each
disk and its partitions:
'BUSTYPE-[VENDOR_]PRODUCT_SERIAL[-partN]' -> '../../sdX[N]'.
This is based on strings provided by STORAGE_DEVICE_DESCRIPTOR.
If this information is too short, a 128-bit hash of the
STORAGE_DEVICE_UNIQUE_IDENTIFIER raw data is added.
Administrator privileges are not required.
Signed-off-by: Christian Franke <christian.franke@t-online.de>
The commit 322c7150b2 restricts buffer size with a fixed length,
however, the minimum buffer size should be varied by the sample rate.
With this patch, it is estimated using sample rate, sample width
and number of channels so that the buffer length is not less than
80 msec which is almost the minimum value of Win MME to work.
Fixes: 322c7150b2 ("Cygwin: dsp: Avoid setting buffer that is too small.")
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
The buffer size that is too small causes choppy sound. That is not
practical at all. With this patch, the minimum value of the buffer
size (i.e. fragstotal * fragsize) is restricted to 16384 bytes.
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
Creating real NFS symlinks for device files has a major downside:
The way we store device info requires to change the symlink target
in case of calling chmod(2). This falls flat in two ways:
- It requires to remove and recreate the symlink, so it doesn't
exist for a short period of time, and
- removing fails badly if there's another open handle to the symlink.
Therefore, change this to create FIFOs as shortcut files, just as on
most other filesystems. Make sure to recognize these new shortcuts
on NFS (for devices only) in path handling and readdir.
Fixes: 622fb0776e ("Cygwin: enable usage of FIFOs on NFS")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
fhandler_base::fchown casts any fhandler landing here to a
fhandler_disk_file. That's ugly and dangerous. Duplicate
the path_conv info into an explicitly create fhandler_disk_file
instead and call fchmod on that.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
By handling native NFS FIFOs as actual FIFOs, chmod on a FIFO
suddenly called fhandler_base::fchmod, which is insufficient
to handle FIFO files on any filesystem.
Note that this does not fix Cygwin FIFOs on NFS or AFS yet.
Fixes: 622fb0776e ("Cygwin: enable usage of FIFOs on NFS")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
With this patch, the response time of select()/poll() has been
improved by utilizing semaphore (select_sem) just like pipe and
fifo. In addition, notification of exceptional conditions has
been added.
Fixes: 2c06014f12 ("Cygwin: dsp: Implement select()/poll().")
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
Previously, sound device /dev/dsp did not support select()/poll().
These have been implemented with this patch.
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
FIFOs on NFS were never recogized as such in path handling.
stat(2) indicated native FIFOs as FIFOs but the path handling
code didn't set the matching values in the inner symlink checking
code, so the followup behaviour was wrong.
Basically for the same reason, Cygwin-created FIFOs were just treated
as symlinks with weird content by stat(2) as well as path handling.
Add code to enable both types of FIFOs on NFS as Cygwin FIFOs.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This patch adds implementation of OSS-based sound mixer device. This
allows applications to change the sound playing volume.
NOTE: Currently, the recording volume cannot be changed.
Reviewed-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
After the commit fbfea31dd9, switch_to_nat_pipe is not cleared
properly when non-cygwin app is terminated in the case where the
pseudo console is disabled. This is because get_winpid_to_hand_over()
sometimes returns PID of cygwin process even though it should return
only PID of non-cygwin process. This patch fixes the issue by adding
a new argument which requests only PID of non-cygwin process to
get_console_process_id().
Fixes: fbfea31dd9 ("Cygwin: pty: Avoid cutting the branch the pty master is sitting on.")
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
The commit 10d083c745 has a bug that lacks a check for pinfo pointer
value for master_pid. This causes segmentation fault if the process
whose pid is master_pid no longer exists. This patch fixes the issue.
Fixes: 10d083c745 ("Cygwin: pty: Inherit typeahead data between two input pipes.")
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
Previously, though readahead buffer handling in pty master was not
fully thread-safe, accept_input() was called from peek_pipe() thread
in select.cc. This caused the problem reported in:
https://cygwin.com/pipermail/cygwin/2023-July/253984.html
The mechanism of the problem is:
1) accept_input() which is called from peek_pipe() thread calls
eat_readahead(-1) before reading readahead buffer. This allows
writing to the readahead buffer from another (main) thread.
2) The main thread calls fhandler_pty_master::write() just after
eat_readahead(-1) was called and before reading the readahead
buffer by accept_input() called from peek_pipe() thread. This
overwrites the readahead buffer.
3) The read result from readahead buffer which was overwritten is
sent to the slave.
This patch makes readahead buffer handling fully thread-safe using
input_mutex to resolve this issue.
Fixes: 7b03b0d8ce ("select.cc (peek_pipe): Call flush_to_slave whenever we're checking for a pty master.")
Reported-by: Thomas Wolff <towo@towo.net>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
While st_rdev returned by fstat() for /dev/tty should be FH_TTY,
the current cygwin1.dll returns FH_PTYS+minor or FH_CONS+minor.
Similarly, fstat() does not return correct value for /dev/console,
/dev/conout, /dev/conin or /dev/ptmx.
This patch fixes the issue by:
1) Introduce dev_referred_via in fhandler_termios.
2) Add new argument, which has dev_t value referred by open(),
for constructors of fhandler_pty_slave and fhandler_pty_master to
set the value of dev_referred_via.
3) Set st_rdev using dev_referred_via in fhandler_termios::fstat()
if it is available.
Reviewed-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
As reported in
https://cygwin.com/pipermail/cygwin/2023-June/253888.html,
"Bad address" error occurs when stat() is called after the commit
3721a756b0 ("Cygwin: console: Make the console accessible from
other terminals.").
There are two problems in the current code. One is fhandler_console::
fstat() calls get_ttyp()->getsid(). However, fh_alloc() in dtable.cc
omits to initialize the fhandler_console instance when stat() is
called. Due to this, get_ttyp() returns NULL and access violation
occurs. The other problem is fh_alloc() assigns fhandler_console
even if the CTTY is not a console. So the first problem above occurs
even if the CTTY is a pty.
This patch fixes the issue by:
1) Call set_unit() to initialize _tc if the get_ttyp() returns NULL.
2) Assign fhandler_pty_slave for /dev/tty if CTTY is a pty in fh_alloc().
Fixes: 3721a756b0 ("Cygwin: console: Make the console accessible
from other terminals.").
Fixes: 23771fa1f7 ("dtable.cc (fh_alloc): Make different decisions
when generating fhandler for not-opened devices. Add kludge to deal
with opening /dev/tty.")
Reported-by: Bruce Jerrick <bmj001@gmail.com>
Reviewed-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
In test for AMD/Intel Control flow Enforcement Technology user mode
shadow stack support replace Windows version tests with test of wincap
member addition has_user_shstk with Windows version dependent value
Fixes: 41fdb869f9 ("fhandler/proc.cc(format_proc_cpuinfo): Add Linux 6.3 cpuinfo")
Signed-off-by: Brian Inglis <Brian.Inglis@Shaw.ca>
The commit 9fc746d17d does not fix transferring input at exit
appropriately. If the more than one non-cygwin apps are executed
simultaneously and one of them is terminated, the pty master failed
to send input to the other non-cygwin apps. This patch fixes that.
Fixes: 9fc746d17d ("Cygwin: pty: Fix transferring type-ahead input between input pipes.")
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
After the commit e5fcc5837c, transferring type-ahead input between
the pipe for cygwin app and the pipe for non-cygwin app will not be
done appropriately when the stdin of the non-cygwin app is not pty.
Due to this issue, sometimes the keyboard input might be lost which
should be sent to cygwin app. This patch fixes the issue.
Fixes: e5fcc5837c ("Cygwin: pty: Fix reading CONIN$ when stdin is not a pty.")
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
cpuid 0x00000007:0 ecx:7 shstk Shadow Stack support & Windows [20]20H1/[20]2004+
=> user_shstk User mode program Shadow Stack support
AMD SVM 0x8000000a:0 edx:25 vnmi virtual Non-Maskable Interrrupts
Sync AMD 0x80000008:0 ebx flags across two output locations
Previously, the pty master sends inputs to the pipe for cygwin app
even when pseudo console is activated if stdin is not the pty.
This causes the problem that key input is not sent to non cygwin
app even if the app opens CONIN$. This patch sets switch_to_nat_pipe
to true regardless whether stdin is the pty or not to allow that case.
https://cygwin.com/pipermail/cygwin/2023-April/253424.html
Reported-by: Wladislav Artsimovich <cygwin@frost.kiwi>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
Drop usage of newlocale/nl_langinfo_l/freelocale.
Call __set_charset_from_locale instead, and make sure to call it
with modifier, if any, otherwise suffer wrong results.
Fixes: c42b98bdc6 ("Cygwin: introduce /proc/codesets and /proc/locales")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The sr_XY locales are supposed to default to cyrillic, but the code
always attached a @cyrillic, same reason as in the previous commit.
Special case "sr" further to workaround that issue.
Fixes: c42b98bdc6 ("Cygwin: introduce /proc/codesets and /proc/locales")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Due to the way locales are evaluated in Windows, we can't ask for
the script of the "sd-IN" locale, because Windows only knows the
"sd-Deva-IN" locale. So asking for the script of the "sd" locale
returns "Arab;", because "sd" is converted to "sd-Arab-PK".
Special case "sd-IN" to workaround that issue.
Fixes: c42b98bdc6 ("Cygwin: introduce /proc/codesets and /proc/locales")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Useless indirection. Rename _unlink_nt back to unlink_nt
and call the function directly with `sharable' flag as needed.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This patch replaces ctty constants with more descriptive macros
(CTTY_UNINITIALIZED and CTTY_RELEASED) rather than -1 and -2 as
well as checking sign with CTTY_IS_VALID().
Fixes: 3b7df69aaa (Cygwin: ctty: Add comments for the special values: -1 and -2.)
Suggested-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
Effectively revert commit 57bac33359. The fact that the
devanagari modifier was called devanagar (missing the trailing 'i')
is a result of `locale -av' shortening the locale name to a maximum
of 15 characters.
D'oh. I guess we need a better way to do this...
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
So far locale(1) had to have knowledge how to construct, thus
duplicating the effort how Cygwin handles locale strings.
Move locale list and codeset list generation into Cygwin by
providing /proc/codesets and /proc/locales files. /proc/locales
does not list aliases, those are still handled in locale(1).
locale(1) opens the files and ueses that info for printing,
like any other application can do now.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Previously, SNDCTL_DSP_POST and SNDCTL_DSP_SYNC were implemented
wrongly. Due to this issue, module-oss of pulseaudio generates
choppy sound when SNDCTL_DSP_POST is called. This patch fixes that.
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
Even with the commit 3a4c740f59, SNDCTL_DSP_GET[IO]SPACE ioctl()
does not return the fragment set by SNDCTL_DSP_SETFRAGMENT if it
is issued before read()/write(). This patch fixes the issue.
Fixes: 3a4c740f59 ("Cygwin: dsp: Implement SNDCTL_DSP_SETFRAGMENT ioctl().")
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
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>
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>
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 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>
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>
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>
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>
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>
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>
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>
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>
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>
Corinna Vinschen
Takashi Yano
Christian Franke
Brian Inglis