104 lines
4.1 KiB
Plaintext
104 lines
4.1 KiB
Plaintext
What's new:
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-----------
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- Revamped pseudo console support. Conditionally activating it only when
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a non-cygwin application is run.
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- New C11 threads API: call_once, cnd_broadcast, cnd_destroy, cnd_init,
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cnd_signal, cnd_timedwait, cnd_wait, mtx_destroy, mtx_init, mtx_lock,
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mtx_timedlock, mtx_trylock, mtx_unlock, thrd_create, thrd_current,
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thrd_detach, thrd_equal, thrd_exit, thrd_join, thrd_sleep, thrd_yield,
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tss_create, tss_delete, tss_get, tss_set.
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- In cygwin console, new thread which handles special keys/signals such
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as Ctrl-Z (VSUSP), Ctrl-\ (VQUIT), Ctrl-S (VSTOP), Ctrl-Q (VSTART) and
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SIGWINCH has been introduced. There have been a long standing issue
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that these keys/signals are handled only when app calls read() or
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select(). Now, these work even if app does not call read() or select().
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- fchmodat(2) now has limited support for the AT_SYMLINK_NOFOLLOW flag.
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- Cygwin now recognizes native Windows AF_UNIX sockets (as regular
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files, not as socket files). This allows tools like 'ls' and 'rm'
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to work.
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What changed:
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-------------
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- Allow ~5000 child processes per process on 64 bit, ~1200 child processes
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per process on 32 bit. So far, only 256 child processes per process were
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supported.
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- A few FAQ updates.
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- Have tmpfile(3) make use of Win32 FILE_ATTRIBUTE_TEMPORARY via open(2)
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flag O_TMPFILE.
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Addresses: https://cygwin.com/pipermail/cygwin/2021-January/247304.html
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- Utilize Windows 10 1809 FILE_DISPOSITION_IGNORE_READONLY_ATTRIBUTE
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flag to allow simpler unlink of files with DOS readonly flags set.
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- getdtablesize(3), sysconf(_SC_OPEN_MAX), and
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getrlimit(RLIMIT_NOFILE) now return the true limit on the number of
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open descriptors, 3200. Previously they returned the current size
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of Cygwin's internal file descriptor table, which can grow
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dynamically.
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- facl(2) now fails with EBADF on a file opened with O_PATH.
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- Allow to start Windows Store executables via their "app execution
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aliases". Handle these aliases (which are special reparse points)
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as symlinks to the actual executables.
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Bug Fixes
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---------
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- Iterate at least 4 times over pthread_key_t destructors per POSIX.
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- The pthread_yield declaration in pthread is now visible by default
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or when defining _BSD_SOURCE, too.
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- Fix SEGV in modfl call.
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Addresses: https://cygwin.com/pipermail/cygwin/2020-August/246056.html
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- Fix a collision of offical and internally used file flags.
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Addresses: https://cygwin.com/pipermail/cygwin/2020-September/246174.html
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- Fix assertion failure on an invalid path under /proc/<pid>/fd/.
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Addresses: https://cygwin.com/pipermail/cygwin/2020-September/246160.html
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- Fix crash on stat(2)'ing /dev/ptmx on 32 bit.
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Addresses: https://cygwin.com/pipermail/cygwin/2020-September/246218.html
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- Fix return value of sqrtl on negative infinity.
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Addresses: https://cygwin.com/pipermail/cygwin/2020-October/246606.html
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- Fix a path handling problem if there is a WSL symlink in PATH.
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Addresses: https://cygwin.com/pipermail/cygwin/2020-December/246938.html
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- Fix a bug in fstatat(2) on 32 bit that could cause it to return garbage.
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Addresses: https://cygwin.com/pipermail/cygwin/2021-January/247399.html
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- Fix the errno when a path contains .. and the prefix exists but is
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not a directory.
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Addresses: https://lists.gnu.org/archive/html/bug-gnulib/2021-01/msg00214.html
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- Fix the return value when ptsname_r(3) is called with a bad file descriptor
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Addresses: https://lists.gnu.org/archive/html/bug-gnulib/2021-01/msg00245.html
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- Fix path handling in case the Cygwin installation dir is accessed via
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a Windows junction point.
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Addresses: https://cygwin.com/pipermail/cygwin-developers/2021-February/012054.html
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- Fix potential handle leaks when dup'ing descriptors
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Addresses: https://cygwin.com/pipermail/cygwin-developers/2021-February/012041.html
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- Fix a bug that could cause fstat(2) to return incorrect results on a FIFO.
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- Fix some system calls on AF_LOCAL sockets that are not socket files.
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Addresses: https://cygwin.com/pipermail/cygwin-developers/2021-February/012066.html
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- Fix access to block devices under /proc/sys.
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Addresses: https://sourceware.org/pipermail/cygwin-patches/2020q4/010843.html
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