MSFT NFSv3 fakes DOS attributes based on file type and permissions.
Rather than just faking FILE_ATTRIBUTE_DIRECTORY for dirs, fetch the
"real" DOS attributes returned by NFS.
This allows to handle the "R/O" attribute on shortcut files and thus
reading and creating device shortcut files on NFS.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Add a missing "void" to the prototype for __cpuset_zero_s().
Reported-by: Marco Mason <marco.mason@gmail.com>
Addresses: https://cygwin.com/pipermail/cygwin/2023-September/254423.html
Signed-off-by: Mark Geisert <mark@maxrnd.com>
Fixes: c6cfc99648d6 (Cygwin: sys/cpuset.h: add cpuset-specific external functions)
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>
Use __size_t and __pid_t instead of size_t and pid_t to avoid
further dependencies to external headers.
Reported-by: Brian Inglis <Brian.Inglis@Shaw.ca>
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
The latest incarnation of sys/cpuset.h broke building coreutils.
The reason is the inclusion of stdlib.h and string.h and hence
premature requests for datatypes not yet defined in the include
chain.
Avoid this by defining __cpuset_alloc and __cpuset_free as external
functions, now defined in sched.cc. Linux is doing this too, just
using different names for the functions. Redefine __cpuset_zero_s
to use __builtin_memset only on compilers supporting it, otherwise
using a simple loop. Drop the stdlib.h and string.h includes.
Fixes: 3f2790e044 ("Cygwin: Make gcc-specific code in <sys/cpuset.h> compiler-agnostic")
Reported-by: Denis Excoffier <cygwin@Denis-Excoffier.org>
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Nano malloc uses `size' in assertation whereas the correct variable would be
`s'. Given this has existed ever since nano malloc support was added, based
on the context ("returned payload area of desired size does not exceed the
actual allocated chunk") I presume that indeed `s' (user input) and not
`r->size' (computed) shall be used.
Before commit 44f73c5a62 ("Cygwin: Fix segfalt when too many command
line args are specified.") we had no actual argument size limit, except
for the fact that the child process created another copy of the argv
array on the stack, which could result in a stack overflow and a
subsequent SEGV. Commit 44f73c5a62 changed that by allocating the
additional argv array via malloc, and it introduced a new SC_ARG_MAX
limit along the lines of the typical Linux limit.
However, this new limit is artificial. Cygwin allocates all argument
and environment data on the cygheap. We only run out of ARG_MAX space
if we're out of memory resources.
Change argument size handling accordingly:
- Drop the args size check from child_info_spawn::worker.
- Return -1 from sysconf (SC_ARG_MAX), i. e., the argument size limit
is undefined.
- Change argv handling in class av, so that a failing cmalloc is not
fatal. This allows the parent process to return E2BIG if it's out
of cygheap resources.
- In the child, add a check around the new malloc call, so that it
doesn't result in a SEGV if the child process gets unexpectedly into
an ENOMEM situation at this point. In this (unlikely) case, proceed
with the original __argv array instead. Add comment to explain why.
Fixes: 44f73c5a62 ("Cygwin: Fix segfalt when too many command line args are specified.")
Tested-by: Takashi Yano <takashi.yano@nifty.ne.jp>
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
Previously, the number of command line args was not checked for
cygwin process. Due to this, segmentation fault was caused if too
many command line args are specified.
https://cygwin.com/pipermail/cygwin/2023-August/254333.html
Since char *argv[argc + 1] is placed on the stack in dll_crt0_1(),
STATUS_STACK_OVERFLOW occurs if the stack does not have enough
space.
With this patch, char *argv[] is placed in heap instead of stack
and ARG_MAX is increased from 32000 to 2097152 which is default
value of Linux. The argument length is also compared with ARG_MAX
and spawnve() returns E2BIG if it is too long.
Reported-by: Ed Morton
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>
After the commit 93508e5bb8, the access permissions argument passed
to open_shared() is ignored and always replaced with (FILE_MAP_READ |
FILE_MAP_WRITE). This causes the weird behaviour that sshd service
process loses its cygwin PID. This triggers the failure in pty that
transfer_input() does not work properly.
This patch resumes the access permission settings to fix that.
Fixes: 93508e5bb8 ("Cygwin: open_shared: don't reuse shared_locations parameter as output")
Reviewed-by: Corinna Vinschen <corinna@vinschen.de>
Signedd-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>
As described in the previous commit b5111e4642
("struct _reent: add state for unicode functions") every unicode
conversion function has to use their own state object, if the
state parameter is NULL.
Fixes: 4f258c55e8 ("Cygwin: Add ISO C11 functions c16rtomb, c32rtomb, mbrtoc16, mbrtoc32.")
Fixes: c49bc478b4 ("Cygwin: Add ISO C2X functions c8rtomb, mbrtoc8")
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
C23 requires that the unicode functions c16rtomb, c8rtomb, mbrtoc16,
mbrtoc32 and mbrtoc8 use their own internal state object. c32rtomb
only needs an internal state if the lib supports encoding with
shift states, but that's the case for newlib and Cygwin.
Only Cygwin implements these functions so add the states
objects only for Cygwin for now.
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
After addition of SEEK_HOLE, the whence of *4* is not an invalid
argument, causing the test to FAIL.
See ltp commit 423e636a4c8f ("lseek03: change to fix with the lseek syscall")
Avoid transient failures by adding a small delay after fork()-ing to
allow the child to get into a state where it can recieve signals.
Also add same small delay to kill03 and kill04. kill02 has a more
elaborate setup where child processes write to a pipe to indicate they
have started.
Corinna Vinschen
Mark Geisert
Takashi Yano
Jon Turney
Brian Inglis
Pekka Seppänen
Alexey Lapshin