115 lines
4.1 KiB
Text
115 lines
4.1 KiB
Text
What's new:
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-----------
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- Support for CLOCK_REALTIME_COARSE, CLOCK_MONOTONIC_COARSE,
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CLOCK_MONOTONIC_RAW, CLOCK_BOOTTIME, CLOCK_REALTIME_ALARM,
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CLOCK_BOOTTIME_ALARM clocks.
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- Support for case sensitive directories. mkdir(2) automatically
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creates directories within the Cygwin installation dir as case
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sensitive now.
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This feature requires Windows 10 1803 or later and WSL installed!
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- New file ioctls's FS_IOC_GETFLAGS and FS_IOC_SETFLAGS. The actual
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inode flags are Cygwin-specific. This allows to set or reset
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DOS attributes, file sparseness, FS level encryption and compression,
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as well as directory case sensitivity programatically.
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- New tools chattr(1) and lsattr(1) to utilize setting and viewing the
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aforementioned new ioctl's on the command line.
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- Support for exFAT.
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- Support Linux-specific open(2) flag O_PATH.
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- Support Linux-specific linkat(2) flag AT_EMPTY_PATH.
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- Support overrun counter for posix timers (via timer_getoverrun() or
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siginfo_t::si_overrun).
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- New APIs: signalfd, timerfd_create, timerfd_gettime, timerfd_settime,
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timer_getoverrun.
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- fork(2) now is able to recover from when an in-use executable/dll is
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removed or replaced during process runtime. This feature is disabled by
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default and limited to exes/dlls on the same NTFS partition as the Cygwin
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installation. For more information and how to enable, please refer to
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https://www.cygwin.com/cygwin-ug-net/highlights.html#ov-hi-process
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What changed:
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-------------
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- clock_nanosleep, pthread_condattr_setclock and timer_create now support
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all clocks, except CLOCK_PROCESS_CPUTIME_ID and CLOCK_THREAD_CPUTIME_ID.
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- clock_setres is a no-op now.
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- Use the new POSIX unlink semantics on NTFS starting with Windows 10 1709.
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Deleting an in-use file now actually removes the file, rather than moving
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it to the recycler bin.
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- Use the new POSIX rename semantics on NTFS starting with Windows 10 1809.
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Renaming a file to another in-use file now actually removes the other file,
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rather than moving it to the recycler bin.
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- open(..., O_TMPFILE) now moves the file to the trash bin immediately,
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to free the parent directory.
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- Wctype functions updated to Unicode 11.0.
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- Remove matherr, and SVID and X/Open math library configurations.
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Default math library configuration is now IEEE.
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- Improve uname(2) for newly built applications.
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- Kerberos/MSV1_0 S4U authentication replaces two old methods:
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Creating a token from scratch and Cygwin LSA authentication package.
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- Cygwin PIDs have been decoupled from Windows PID. Cygwin PIDs are
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now incrementally dealt in the range from 2 up to 65535, POSIX-like.
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Native Windows processes not started by Cygwin processes are mapped
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into the range beyond 65535.
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Bug Fixes
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---------
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- Fix a thread race when initializing CLOCK_MONOTONIC.
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Addresses: https://cygwin.com/ml/cygwin/2018-11/msg00017.html
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- Fix early timeout from pthread_cond_timedwait.
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Addresses: https://cygwin.com/ml/cygwin/2018-11/msg00171.html
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- Fix a bug in recognizing remote FAT/FAT32/exFAT correctly.
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- Allow open(2)/stat(2)/linkat(2) of a file via /proc/PID/fd/DESCRIPTOR
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even if file has been deleted.
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Addresses: https://cygwin.com/ml/cygwin/2018-12/msg00125.html
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https://cygwin.com/ml/cygwin/2018-12/msg00028.html
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- Fix a bug in select(2) when polling HANDLE-less descriptors.
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- Fix WEOF handling in wctype functions.
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Addresses: https://cygwin.com/ml/cygwin/2018-12/msg00173.html
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- Fix thread names in GDB when cygthreads get reused.
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- Fix return value of gethostname in a border case.
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- Disallow seteuid on disabled or locked out accounts.
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Addresses: https://cygwin.com/ml/cygwin/2019-01/msg00197.html
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- Fix raise to work as required by POSIX.
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Addresses: https://cygwin.com/ml/cygwin/2019-01/msg00149.html
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- Fix exception handling in pthreads.
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Addresses: https://cygwin.com/ml/cygwin/2019-01/msg00149.html
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- Fix O_APPEND handling on files when calling non-Cygwin applications
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Addresses: https://cygwin.com/ml/cygwin/2019-02/msg00081.html
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- Fix case correctness of passwd/group entries fetched via getpwnam
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or getgrnam.
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Addresses: https://cygwin.com/ml/cygwin/2019-02/msg00109.html
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