mirror of
git://sourceware.org/git/newlib-cygwin.git
synced 2025-01-26 09:07:34 +08:00
5781871775
According to POSIX and the Linux man page, select(2) is supposed to report read ready if a file is at EOF. In the case of a FIFO, this means that the pipe is empty and there are no writers. But there seems to be an undocumented exception, observed on Linux and other platforms: If no writer has ever been opened, then select(2) does not report read ready. This can happen if a reader is opened with O_NONBLOCK before any writers have opened. This commit makes Cygwin consistent with those other platforms by introducing a special EOF test, fhandler_fifo::select_hit_eof, which returns false if there's never been a writer opened. To implement this we use a new variable '_writer_opened' in the FIFO's shared memory, which is set to 1 the first time a writer opens. New methods writer_opened() and set_writer_opened() are used to test and set this variable. Addresses: https://cygwin.com/pipermail/cygwin/2022-September/252223.html
43 lines
1.9 KiB
Groff
43 lines
1.9 KiB
Groff
Bug Fixes
|
|
---------
|
|
|
|
- Fix a bug in fhandler_dev_clipboard::read() that the second read
|
|
fails with 'Bad address'.
|
|
Addresses: https://cygwin.com/pipermail/cygwin/2021-December/250141.html
|
|
|
|
- Convert UNC path prefix back to drive letter in symlink_info::check().
|
|
This solves the following issues:
|
|
Addresses: https://cygwin.com/pipermail/cygwin/2021-November/250087.html
|
|
https://cygwin.com/pipermail/cygwin/2021-December/250103.html
|
|
|
|
- Fix a bug in pty code that input is wrongly sent to io_handle_nat
|
|
rather than io_handle while neither read() nor select() is called
|
|
after the cygwin app is started from non-cygwin app.
|
|
Addresses: https://cygwin.com/pipermail/cygwin-patches/2021q4/011587.html
|
|
|
|
- Avoid a crash when NtQueryInformationProcess returns invalid handle data.
|
|
Addresses: https://cygwin.com/pipermail/cygwin-patches/2021q4/011611.html
|
|
|
|
- Ignore INHERIT ACEs when reading the DACL of non-directory files.
|
|
Addresses: https://cygwin.com/pipermail/cygwin/2022-January/250363.html
|
|
|
|
- Fix an "Invalid argument" problem in posix_spawn on i686.
|
|
Addresses: https://cygwin.com/pipermail/cygwin/2022-January/250453.html
|
|
|
|
- Fix handling of AAAA records in Cygwin resolver code using native
|
|
windows calls. Also fix various bugs in the resolver.
|
|
|
|
- Fix a problem creating a dir "foo", if a file (but not a Cygwin symlink)
|
|
"foo.lnk" already exists.
|
|
Addresses: https://github.com/msys2/msys2-runtime/issues/81
|
|
|
|
- Fix double free for archetype, which is caused when open() fails.
|
|
Addresses: https://cygwin.com/pipermail/cygwin/2022-January/250518.html
|
|
|
|
- Fix a permission problem when writing DOS attributes on Samba.
|
|
Addresses: https://cygwin.com/pipermail/cygwin/2022-January/250629.html
|
|
|
|
- For Linux compatibility, select(2) no longer reports read ready on a
|
|
FIFO that has never been opened for writing.
|
|
Addresses: https://cygwin.com/pipermail/cygwin/2022-September/252223.html
|