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| <html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>What's new and what changed in Cygwin</title><link rel="stylesheet" type="text/css" href="docbook.css"><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot"><link rel="home" href="cygwin-ug-net.html" title="Cygwin User's Guide"><link rel="up" href="overview.html" title="Chapter 1. Cygwin Overview"><link rel="prev" href="highlights.html" title="Highlights of Cygwin Functionality"><link rel="next" href="setup-net.html" title="Chapter 2. Setting Up Cygwin"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">What's new and what changed in Cygwin</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="highlights.html">Prev</a> </td><th width="60%" align="center">Chapter 1. Cygwin Overview</th><td width="20%" align="right"> <a accesskey="n" href="setup-net.html">Next</a></td></tr></table><hr></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="ov-new"></a>What's new and what changed in Cygwin</h2></div></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new3.6"></a>What's new and what changed in 3.6</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| New API calls: tcgetwinsize, tcsetwinsize. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API call: getlocalename_l. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API calls: fdclosedir, posix_getdents. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API call: setproctitle. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API call: timespec_get. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API calls: tcgetwinsize, tcsetwinsize. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API call: posix_close. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New POSIX-defined entry points posix_spawn_file_actions_addchdir and |
| posix_spawn_file_actions_addfchdir. These are the same as the already |
| exported posix_spawn_file_actions_addchdir_np and |
| posix_spawn_file_actions_addfchdir_np. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add FS_IOC_[GS]ETFLAGS FS_PINNED_FL and FS_UNPINNED_FL flags to handle |
| Windows attributes FILE_ATTRIBUTE_PINNED and FILE_ATTRIBUTE_UNPINNED. |
| Add matching 'p' and 'u' mode bits in chattr(1) and lsattr(1). |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New libaio.a provided for projects checking for POSIX aio support by |
| looking for this library at configure time. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| cygpath -r option allows to generate all Windows paths with root-local |
| path prefix \\?\. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| ps -f now prints the commandline rather than the full path to the |
| executable. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Drop workarounds for connecting with NT4 and Samba < 3.0.22 shares. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Now that SMBv1 is ultimately deprecated and not installed by default on |
| latest Windows versions, use Network Discovery (i. e. WSD, "Web Service |
| Discovery") for enumerating network servers in //, just like Windows |
| Explorer. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| If "server" is given as FQDN, and if "server" is an NFS server, ls |
| //server now also enumerates NFS shares. If "server" is given as a flat |
| name, only SMB shares are enumerated. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Expose WebDav shares, //tsclient (Microsoft Terminal Services) shares as |
| well as //wsl$ (Plan 9 Network Provider) shares, i. e., WSL installation |
| root dirs. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Redesign pipe handling to minimize toggling blocking mode. The |
| query_hdl stuff is no longer needed in new implementation. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Now using AVX/AVX2/AVX-512 instructions in signal handler does not break |
| their context. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| nice(2), setpriority(2) and sched_setparam(2) now fail with EACCES or |
| EPERM if Windows would silently set a lower priority |
| (HIGH_PRIORITY_CLASS instead of REALTIME_PRIORITY_CLASS) due to missing |
| administrator privileges. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| nice(2) now returns the new nice value instead of 0 on success and sets |
| errno to EPERM instead of EACCES on failure. This confirms to POSIX and |
| Linux (glibc >= 2.2.4) behavior. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| sched_setscheduler(2) now emulates changes between SCHED_OTHER, |
| SCHED_BATCH, SCHED_IDLE, SCHED_FIFO and SCHED_RR. If SCHED_OTHER or |
| SCHED_BATCH is selected, the Windows priority is set according to the |
| nice value where SCHED_BATCH sets a one step lower priority. If |
| SCHED_IDLE is selected, the nice value is preserved and the Windows |
| priority is set to IDLE_PRIORITY_CLASS. If SCHED_FIFO or SCHED_RR is |
| selected, the nice value is preserved and the Windows priority is set |
| according to the realtime priority. If the SCHED_RESET_ON_FORK flag is |
| set, SCHED_FIFO and SCHED_RR are reset to SCHED_OTHER and negative nice |
| values are reset to zero in each child process created with fork(2). |
| Note: Windows does not offer alternative scheduling policies so this |
| could only emulate API behavior. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| If SCHED_FIFO or SCHED_RR is selected, the /proc/<PID>/stat field '(18) |
| priority' is now set to the negated sched_policy minus one. If |
| SCHED_IDLE is selected, this field is set to 39. The '(19) nice' field |
| is now set to the originally requested nice value. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Raise maximum pid from 65536 to 4194304 to account for scenarios with |
| lots of CPUs and lots of tasks. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Allow mmap with MAP_FIXED to succeed on an address range contained in |
| the chunk of an existing anonymous mapping, provided the |
| MAP_SHARED/MAP_PRIVATE flags agree and MAP_NORESERVE is not set for |
| either mapping. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Fix a long-standing hang issue when running on ARM64 under emulation. |
| This was due to a thread being terminated while the emulation was |
| holding an internal lock. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add a host machine tag to uname(2)'s sysname field. This echoes what |
| used to be done with -WOW64 (when that was supported), but now with |
| -ARM64 when running on an ARM64 host under emulation. The Cygwin DLL's |
| own architecture continues to be reported in the machine field. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Escape special characters in /proc/<PID>/mount*. This allows the |
| contents to be parsed consistently, and matches what is done on Linux. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Expose all Windows volume mount points via getmntent(3). This also |
| exposes them via /proc/>PID>/mount*. A change in behavior from |
| previous Cygwin versions is that volumes whose root is mounted |
| explicitly in Cygwin will now also show up as mounted under the cygdrive |
| prefix, whereas before that entry would have been suppressed. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new3.5"></a>What's new and what changed in 3.5</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Drop support for Windows 7, Windows 8, Server 2008 R2 and Server 2012. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Console devices (/dev/consN) are now accessible by processes attached to other |
| consoles or ptys. Thanks to this new feature, GNU screen and tmux now work in |
| the console. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| newgrp(1) tool. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| cygcheck has new options searching for available packages in the |
| cygwin distro, as well as getting extended info on available and |
| installed packages. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| fnmatch(3) and glob(3) now support named character classes, equivalence |
| class expressions, and collating symbols in the search pattern, i.e., |
| [:alnum:], [=a=], [.aa.]. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Introduce /dev/disk directory with various by-* subdirectories which |
| provide symlinks to disk and partition raw devices: |
| </p><pre class="screen"> |
| by-drive/DRIVE_LETTER -> ../../sdXN |
| by-label/VOLUME_LABEL -> ../../sdXN |
| by-id/BUSTYPE-[VENDOR_]PRODUCT_[SERIAL|0xHASH][-partN] -> ../../sdX[N] |
| by-partuuid/MBR_SERIAL-OFFSET -> ../../sdXN |
| by-partuuid/GPT_GUID -> ../../sdXN |
| by-uuid/VOLUME_SERIAL -> ../../sdXN |
| by-voluuid/MBR_SERIAL-OFFSET -> ../../sdXN |
| by-voluuid/VOLUME_GUID -> ../../sdXN |
| </pre><p> |
| The subdirectories by-drive and by-voluuid are Cygwin specific. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Introduce /proc/codesets and /proc/locales with information on supported |
| codesets and locales for all interested parties. Locale(1) opens these |
| files and uses the info for printing locale info like any other process |
| could do. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add support for GB18030 codeset. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add support for lseek flags SEEK_DATA and SEEK_HOLE, a GNU extension. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API calls: posix_spawn_file_actions_addchdir_np, |
| posix_spawn_file_actions_addfchdir_np. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API calls: c8rtomb, c16rtomb, c32rtomb, mbrtoc8, mbrtoc16, mbrtoc32. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API call: close_range (available on FreeBSD and Linux). |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API call: fallocate (Linux-specific). |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| posix_spawnp no longer falls back to starting the shell for unrecognized |
| files as execvp. For the reasoning, see |
| https://www.austingroupbugs.net/view.php?id=1674 |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| FIFOs now also work on NFS filesystems. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Enable automatic sparsifying of files on SSDs, independent of the |
| "sparse" mount mode. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| When RLIMIT_CORE is more than 1MB, a core dump file which can be loaded by gdb |
| is now written on a fatal error. Otherwise, if it's greater than zero, a text |
| format .stackdump file is written, as previously. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The default RLIMIT_CORE is now 0, disabling the generation of core dump or |
| stackdump files. Use e.g. <code class="code">ulimit -c unlimited</code> or <code class="code">ulimit -c |
| 1024</code> to enable them again. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new3.4"></a>What's new and what changed in 3.4</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Drop support for Vista and Server 2008. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Drop support for 32 bit Windows and WOW64. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Allow to run with full ASLR enabled and enable on Cygwin DLL by default. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Remove any special handling for the .com filename suffix. It has to |
| be used always explicitely. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add code to handle setrlimit(RLIMIT_AS). |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add code to handle signal masks in /proc/<PID>/status. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The CYGWIN=pipe_byte option is now set by default, so that pipes are |
| opened in byte mode rather than message mode. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Handle UDP_SEGMENT and UDP_GRO socket options. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The stdio input functions no longer try again to read after EOF. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The default values of FD_SETSIZE and NOFILE are now 1024 and 3200, |
| respectively. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new3.3"></a>What's new and what changed in 3.3</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| An IP-sampling profiler named 'profiler' has been added. It can be used |
| to profile any Cygwin program along with any DLLs loaded. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| A new tool 'gmondump' has been added. It can dump the raw information |
| of any "gmon.out" file created by profiler, ssp, or use of the gcc/g++ |
| option '-pg'. (Continue using gprof to get symbolic profile displays.) |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New GNU-specific APIs, slated to become part of the next POSIX standard: |
| pthread_cond_clockwait, pthread_mutex_clocklock, pthread_rwlock_clockrdlock, |
| pthread_rwlock_clockwrlock, sem_clockwait. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New Solaris-specific APIs, slated to become part of the next POSIX standard: |
| sig2str, str2sig. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The speed argument to cfsetspeed(3) can now be a numerical baud rate |
| rather than a Bnnn constant, as on Linux. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The internal implementation of pipes has been overhauled; this should |
| result in improved performance. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new3.2"></a>What's new and what changed in 3.2</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Revamped pseudo console support. Conditionally activating it only when |
| a non-cygwin application is run. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New C11 threads API: call_once, cnd_broadcast, cnd_destroy, cnd_init, |
| cnd_signal, cnd_timedwait, cnd_wait, mtx_destroy, mtx_init, mtx_lock, |
| mtx_timedlock, mtx_trylock, mtx_unlock, thrd_create, thrd_current, |
| thrd_detach, thrd_equal, thrd_exit, thrd_join, thrd_sleep, thrd_yield, |
| tss_create, tss_delete, tss_get, tss_set. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| In cygwin console, new thread which handles special keys/signals such |
| as Ctrl-Z (VSUSP), Ctrl-\ (VQUIT), Ctrl-S (VSTOP), Ctrl-Q (VSTART) and |
| SIGWINCH has been introduced. There have been a long standing issue |
| that these keys/signals are handled only when app calls read() or |
| select(). Now, these work even if app does not call read() or select(). |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Allow ~5000 child processes per process on 64 bit, ~1200 child processes |
| per process on 32 bit. So far, only 256 child processes per process were |
| supported. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| A few FAQ updates. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Have tmpfile(3) make use of Win32 FILE_ATTRIBUTE_TEMPORARY via open(2) |
| flag O_TMPFILE. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Utilize Windows 10 1809 FILE_DISPOSITION_IGNORE_READONLY_ATTRIBUTE flag |
| to allow simpler unlink of files with DOS readonly flags set. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| fchmodat(2) now has limited support for the AT_SYMLINK_NOFOLLOW flag. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| getdtablesize(3), sysconf(_SC_OPEN_MAX), and getrlimit(RLIMIT_NOFILE) |
| now return the true limit on the number of open descriptors, 3200. |
| Previously they returned the current size of Cygwin's internal file |
| descriptor table, which can grow dynamically. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Cygwin now recognizes native Windows AF_UNIX sockets (as regular |
| files, not as socket files). This allows tools like 'ls' and 'rm' to |
| work. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| facl(2) now fails with EBADF on a file opened with O_PATH. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Allow to start Windows Store executables via their "app execution |
| aliases". Handle these aliases (which are special reparse points) |
| as symlinks to the actual executables. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The speed argument to cfsetspeed(3) can now be a numerical baud rate |
| rather than a Bnnn constant, as on Linux. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new3.1"></a>What's new and what changed in 3.1</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| FIFOs can now be opened multiple times for writing. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add 24 bit color support using xterm compatibility mode in Windows 10 |
| 1703 or later. Add fake 24 bit color support for legacy console, which |
| uses the nearest color from 16 system colors. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Support pseudo console in PTY. Pseudo console is a new feature |
| in Windows 10 1809, which provides console APIs on virtual |
| terminal. With this patch, native console applications can work |
| in PTYs such as mintty, ssh, gnu screen or tmux. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Eliminate a header file name collision with <X11/XLocale.h> on |
| case insensitive filesystems by reverting <xlocale.h> back to |
| <sys/_locale.h>. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| If a SA_SIGINFO signal handler changes the ucontext_t pointed to by the |
| third parameter, follow it after returning from the handler. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New APIs: sched_getaffinity, sched_setaffinity, pthread_getaffinity_np, |
| pthread_setaffinity_np, plus CPU_SET macros. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New APIs: dbm_clearerr, dbm_close, dbm_delete, dbm_dirfno, dbm_error, |
| dbm_fetch, dbm_firstkey, dbm_nextkey, dbm_open, dbm_store. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Allow times(2) to have a NULL argument, as on Linux. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Improve /proc/cpuinfo output and align more closely with Linux. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Allow symlinks to be opened with O_PATH | O_NOFOLLOW. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Allow the pathname argument to readlinkat(2) to be an empty string, |
| provided the dirfd argument refers to a symlink opened with O_PATH | |
| O_NOFOLLOW. The readlinkat call then operates on that symlink. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Support the Linux-specific AT_EMPTY_PATH flag for fchownat(2) and |
| fstatat(2). |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Allow AF_LOCAL sockets to be opened with O_PATH. If that flag is not |
| set, or if an attempt is made to open a different type of socket, the |
| errno is now EOPNOTSUPP instead of ENXIO. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The new locale modifier @cjksingle allows enforcing of single-width |
| character property for usually double-widthed characters. This will |
| be supported by upcoming mintty releases. For the reasoning, see |
| https://gitlab.freedesktop.org/terminal-wg/specifications/issues/9. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Support WSL symlinks. Create those by default now. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| FIFOs can now be opened multiple times for reading. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Support more IPPROTO_TCP socket options: TCP_FASTOPEN, TCP_KEEPIDLE, |
| TCP_KEEPCNT, TCP_KEEPINTVL, TCP_QUICKACK, TCP_USER_TIMEOUT. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new3.0"></a>What's new and what changed in 3.0</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Updated era and message locale data, in particular add era data for |
| the new Tennō. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Support for CLOCK_REALTIME_COARSE, CLOCK_MONOTONIC_COARSE, |
| CLOCK_MONOTONIC_RAW, CLOCK_BOOTTIME, CLOCK_REALTIME_ALARM, |
| CLOCK_BOOTTIME_ALARM clocks. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Support for case sensitive directories via chattr(1). This feature requires |
| Windows 10 1803 or later and WSL installed. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New file ioctls's FS_IOC_GETFLAGS and FS_IOC_SETFLAGS. The actual inode |
| flags are Cygwin-specific. This allows to set or reset DOS attributes, |
| file sparseness, FS level encryption and compression, as well as |
| directory case sensitivity programatically. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New tools chattr(1) and lsattr(1) to utilize setting and viewing the |
| aforementioned new ioctl's on the command line. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Support for exFAT. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Support Linux-specific open(2) flag O_PATH. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Support Linux-specific linkat(2) flag AT_EMPTY_PATH. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Support overrun counter for posix timers (via timer_getoverrun() or |
| siginfo_t::si_overrun). |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New APIs: secure_getenv, signalfd, timerfd_create, timerfd_gettime, |
| timerfd_settime, timer_getoverrun. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| clock_nanosleep, pthread_condattr_setclock and timer_create now support |
| all clocks, except CLOCK_PROCESS_CPUTIME_ID and CLOCK_THREAD_CPUTIME_ID. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| clock_setres is a no-op now. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Use the new POSIX unlink semantics on NTFS starting with Windows 10 |
| 1709. Deleting an in-use file now actually removes the file, rather |
| than moving it to the recycler bin. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Use the new POSIX rename semantics on NTFS starting with Windows 10 |
| 1809. Renaming a file to another in-use file now actually removes the |
| other file, rather than moving it to the recycler bin. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| open(..., O_TMPFILE) now moves the file to the trash bin immediately, |
| to free the parent directory. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Wctype functions updated to Unicode 11.0. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Remove matherr, and SVID and X/Open math library configurations. |
| Default math library configuration is now IEEE. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Improve uname(2) for newly built applications. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Kerberos/MSV1_0 S4U authentication replaces two old methods: |
| Creating a token from scratch and Cygwin LSA authentication package. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Cygwin PIDs have been decoupled from Windows PID. Cygwin PIDs are now |
| incrementally dealt in the range from 2 up to 65535, POSIX-like. |
| Native Windows processes not started by Cygwin processes are mapped |
| into the range beyond 65535. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| fork(2) now is able to recover from when an in-use executable/dll is |
| removed or replaced during process runtime. This feature is disabled by |
| default and limited to exes/dlls on the same NTFS partition as the Cygwin |
| installation. For more information and how to enable, please refer to |
| <a class="xref" href="highlights.html#ov-hi-process" title="Process Creation">the section called “Process Creation”</a>. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Improve /proc/<PID>/cmdline and /proc/<PID>/stat handling to allow |
| all processes access to basic process information of foreign processes. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new2.11"></a>What's new and what changed in 2.11</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| SO_RCVTIMEO and SO_SNDTIMEO socket options are now honored. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| /proc/cpuinfo now reports L3 cache size on Intel CPUs. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New APIs: clearenv, pthread_tryjoin_np, pthread_timedjoin_np, sched_getcpu. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New APIs for POSIX Asynchronous I/O: aio_cancel, aio_error, aio_fsync, |
| aio_read, aio_return, aio_suspend, aio_write, lio_listio. |
| New Header: <aio.h>. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Drop denormal-operand exception from FE_ALL_EXCEPT, as on Linux. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Rename the --file option of setfacl(1) to --set-file, as on Linux. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Support Unicode 10. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Following glibc, `union wait' has now been removed. Applications |
| using union wait and these macros will have to migrate to the |
| POSIX-specified int status type. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new2.10"></a>What's new and what changed in 2.10</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| New open(2) flags O_TMPFILE and O_NOATIME. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| scanf/wscanf now handle the POSIX %m modifier. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| scanf now handles the %l[ conversion. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Improved hostprogs compatibility for cross-compiling the Linux kernel. |
| New headers: <asm/bitsperlong.h>, <asm/posix_types.h>. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Built-in implementation of Stack Smashing Protection compiler feature. |
| New APIs: __stack_chk_fail, __stack_chk_guard. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Built-in implementation of _FORTIFY_SOURCE guards for functions in |
| <stdio.h>, <stdlib.h>, <string.h>, <strings.h>, |
| <unistd.h>, <wchar.h>, <sys/poll.h>, and <sys/socket.h>. |
| New APIs: __chk_fail, __gets_chk, __memcpy_chk, __memmove_chk, __mempcpy_chk, |
| __memset_chk, __snprintf_chk, __sprintf_chk, __stpcpy_chk, __stpncpy_chk, |
| __strcat_chk, __strcpy_chk, __strncat_chk, __strncpy_chk, __vsnprintf_chk, |
| __vsprintf_chk. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Built-in implementation of POSIX.1-2001 message catalog support. |
| New APIs: catclose, catgets, catopen. New tool: gencat. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New APIs: sigtimedwait, wmempcpy. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new2.9"></a>What's new and what changed in 2.9</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| New APIs: explicit_bzero, strnstr. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New APIs: pthread_mutex_timedwait, pthread_rwlock_timedrdlock, |
| pthread_rwlock_timedwrlock. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API: renameat2. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Improved implementation of <elf.h>. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| strptime(3) supports %s (seconds since Epoch) now, analogue to strftime. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new2.8"></a>What's new and what changed in 2.8</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| New API: timingsafe_bcmp, timingsafe_memcmp |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API: dladdr |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API: getloadavg |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Cygcheck and strace now always generate output with Unix LF line endings, |
| rather than with DOS/Windows CR LF line endings. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Fork now preserves the load order of unrelated dlopen'd modules. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Pthread_cond_wait now acts like Linux and BSD: Resume waiting for the |
| condition variable as if it was not interrupted, rather than returning 0. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The internal <sys/_locale.h> header was renamed to <xlocale.h> for |
| source compatibility with other systems. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Try harder supporting Netapp drives. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new2.7"></a>What's new and what changed in 2.7</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Support for /proc/<PID>/environ. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API: getentropy, getrandom. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new2.6"></a>What's new and what changed in 2.6</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Support for POSIX-1.2008 locale objects and per-thread locales. |
| </p><p> |
| New API per POSIX-1.2008: newlocale, freelocale, duplocale, uselocale, |
| nl_langinfo_l, isalnum_l, isalpha_l, isblank_l, iscntrl_l, isdigit_l, |
| isgraph_l, islower_l, isprint_l, ispunct_l, isspace_l, isupper_l, iswalnum_l, |
| iswalpha_l, iswblank_l, iswcntrl_l, iswctype_l, iswdigit_l, iswgraph_l, |
| iswlower_l, iswprint_l, iswpunct_l, iswspace_l, iswupper_l, iswxdigit_l, |
| isxdigit_l, tolower_l, toupper_l, towctrans_l, towlower_l, towupper_l, |
| wctrans_l, wctype_l, strcasecmp_l, strcoll_l, strerror_l, strfmon_l, |
| strftime_l, strncasecmp_l, strxfrm_l, wcscasecmp_l, wcscoll_l, wcstrncasecmp_l, |
| wcstrxfrm_l. |
| </p><p> |
| New API, GNU extensions: isascii_l, toascii_l, strptime_l, strtod_l, strtof_l, |
| strtol_l, strtold_l, strtoll_l, strtoul_l, strtoull_l, wcsftime_l, wcstod_l, |
| wcstof_l, wcstol_l, wcstold_l, wcstoll_l, wcstoul_l, wcstoull_l. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| locale(1) now supports a -i/--input option to fetch the current input locale |
| (this is basically equivalent to the current keyboard layout setting). |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Drop support for Windows XP and Windows Server 2003/2003 R2. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Drop support for very old SUNWNFS filesystem. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Raise number of supported partitions per disk (for raw access) to 63. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Further header file improvements in terms of feature test macros. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add a workaround for filesystems not supporting the FileAllInformation |
| info class. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Support AzureAD accounts. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| "nobody" account support for WinFSP. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API: pthread_getname_np, pthread_setname_np. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new2.5"></a>What's new and what changed in 2.5</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Full set of POSIX.1e ACL API functions now implemented. |
| New APIs: acl_add_perm, acl_calc_mask, acl_clear_perms, acl_copy_entry, |
| acl_copy_ext, acl_copy_int, acl_create_entry, acl_delete_def_file, |
| acl_delete_entry, acl_delete_perm, acl_dup, acl_free, acl_from_text, |
| acl_get_entry, acl_get_fd, acl_get_file, acl_get_permset, acl_get_qualifier, |
| acl_get_tag_type, acl_init, acl_set_fd, acl_set_file, acl_set_permset, |
| acl_set_qualifier, acl_set_tag_type, acl_size, acl_to_text, acl_valid. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Most libacl extensions now implemented, too: |
| New APIs: acl_check, acl_cmp, acl_entries, acl_equiv_mode, acl_error, |
| acl_extended_fd, acl_extended_file, acl_extended_file_nofollow, |
| acl_from_mode, acl_get_perm, acl_to_any_text. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Including <sys/acl.h> now *only* includes the POSIX ACL API. To include |
| the old Solaris API, include <cygwin/acl.h>. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| First implementation of pthread_barrier/pthread_barrierattr functions. |
| New APIs: pthread_barrierattr_init, pthread_barrierattr_setpshared, |
| pthread_barrierattr_getpshared, pthread_barrierattr_destroy, |
| pthread_barrier_init, pthread_barrier_destroy, pthread_barrier_wait. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Enabled console reports requested by escape sequences: Requesting primary |
| and secondary device attributes, requesting cursor position report; |
| see https://cygwin.com/ml/cygwin-patches/2012-q3/msg00019.html |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New APIs: clog10, clog10f, nexttoward, nexttowardf, nexttowardl. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add missing long double functions. New APIs: |
| acoshl, acosl, asinhl, asinl, atan2l, atanhl, atanl, cacoshl, cacosl, cargl, |
| casinhl, casinl, catanhl, catanl, ccoshl, ccosl, ceill, cexpl, clog10l, |
| clogl, conjl, copysignl, coshl, cosl, cpowl, cprojl, csinhl, csinl, csqrtl, |
| ctanhl, ctanl, dreml, erfcl, erfl, exp10l, exp2l, expl, expm1l, fabsl, |
| fdiml, floorl, fmal, fmaxl, fminl, fmodl, frexpl, ilogbl, isinfl, isnanl, |
| ldexpl, lgammal, lgammal_r, llroundl, log10l, log1pl, log2l, logbl, logl, |
| lroundl, modfl, nearbyintl, nextafterl, pow10l, powl, remainderl, remquol, |
| roundl, scalbl, scalblnl, scalbnl, sincosl, sinhl, sinl, tanhl, tanl, |
| tgammal, truncl. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| In calls to chmod treat ACLs with extra ACEs *only* for Admins and |
| SYSTEM like a trivial ACL. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Bump POSIX option macros to POSIX.1-2008. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Profiling data, specifically pc sampling, now covers all threads of a |
| program and not just the main thread. Environment variable GMON_OUT_PREFIX |
| enables multiple gmon.out files to preserve profiling data after fork or |
| from multiple program runs. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Feature test macros, which control which symbols are exposed in the standard |
| headers, have been completely overhauled for compatibility with glibc. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The isinf, isinff, and isinfl functions are signed, returning -1 for |
| negative infinity for compatibility with glibc. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new2.4"></a>What's new and what changed in 2.4</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| New, unified implementation of POSIX permission and ACL handling. The |
| new ACLs now store the POSIX ACL MASK/CLASS_OBJ permission mask, and |
| they allow to inherit the S_ISGID bit. ACL inheritance now really |
| works as desired, in a limited, but theoretically equivalent fashion |
| even for non-Cygwin processes.</p><p>To accommodate standard Windows ACLs, the POSIX permissions of |
| the owner and all other users in the ACL are computed using the Windows |
| AuthZ API. This may slow down the computation of POSIX permissions |
| noticably in some circumstances, but is generally more correct. |
| The new code also ignores SYSTEM and Administrators group permissions |
| when computing the MASK/CLASS_OBJ permission mask on old ACLs, and it |
| doesn't deny access to SYSTEM and Administrators group based on the |
| value of MASK/CLASS_OBJ when creating the new ACLs.</p><p>The new code now handles the S_ISGID bit on directories as on Linux: |
| Setting S_ISGID on a directory causes new files and subdirs created |
| within to inherit its group, rather than the primary group of the user |
| who created the file. This only works for files and directories |
| created by Cygwin processes. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| cygpath has a new -U option, which creates cygdrive paths using the |
| unambiguous /proc/cygdrive prefix. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API: rpmatch. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Align setfacl(1) usage a bit closer to the usage on Linux. Rename -d option |
| to -x, --substitute to --set. Add --no-mask and --mask options. Allow to |
| use the -b and -k option combined to allow reducing an ACL to only reflect |
| standard POSIX permissions. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Fix (numeric and monetary) decimal point and thousands separator in |
| fa_IR and ps_AF locales to be aligned with Linux. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| utmpname/utmpxname are now defined as int functions as on Linux. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new2.3"></a>What's new and what changed in 2.3</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| strftime(3) supports %s (seconds since Epoch) now. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| posix_madvise(POSIX_MADV_WILLNEED) now utilizes OS functionality available |
| starting with Windows 8/Server 2012. |
| </p><p> |
| posix_madvise(POSIX_MADV_DONTNEED) now utilizes OS functionality available |
| starting with Windows 8.1/Server 2012R2. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| sysconf() now supports returning CPU cache information: |
| </p><pre class="screen"> |
| _SC_LEVEL1_ICACHE_SIZE, _SC_LEVEL1_ICACHE_ASSOC, _SC_LEVEL1_ICACHE_LINESIZE, |
| _SC_LEVEL1_DCACHE_SIZE, _SC_LEVEL1_DCACHE_ASSOC, _SC_LEVEL1_DCACHE_LINESIZE, |
| _SC_LEVEL2_CACHE_SIZE, _SC_LEVEL2_CACHE_ASSOC, _SC_LEVEL2_CACHE_LINESIZE, |
| _SC_LEVEL3_CACHE_SIZE, _SC_LEVEL3_CACHE_ASSOC, _SC_LEVEL3_CACHE_LINESIZE, |
| _SC_LEVEL4_CACHE_SIZE, _SC_LEVEL4_CACHE_ASSOC, _SC_LEVEL4_CACHE_LINESIZE |
| </pre><p> |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API: aligned_alloc, at_quick_exit, quick_exit. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add support for Parallels Desktop FS (prlfs). |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new2.2"></a>What's new and what changed in 2.2</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| New APIs: getcontext, setcontext, makecontext, swapcontext. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New functions: sigsetjmp, siglongjmp. |
| </p><p> |
| These were only available as macros up to now, but POSIX requires that |
| siglongjmp has to be available as function. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new2.1"></a>What's new and what changed in 2.1</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Handle pthread stacksizes as in GLibc: Default to RLIMIT_STACK resource. |
| Allow to set RLIMIT_STACK via setrlimit. Default RLIMIT_STACK to value |
| from executable header as described on the MSDN website |
| <a class="ulink" href="https://msdn.microsoft.com/en-us/library/windows/desktop/ms686774.aspx" target="_top">Thread Stack Size</a> |
| Default stacksize to 2 Megs in case RLIMIT_STACK is set to RLIM_INFINITY. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| First cut of an implementation to allow signal handlers running on an |
| alternate signal stack. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API sigaltstack, plus definitions for SA_ONSTACK, SS_ONSTACK, |
| SS_DISABLE, MINSIGSTKSZ, SIGSTKSZ. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API: sethostname. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new2.0"></a>What's new and what changed in 2.0</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| basename(3) now comes in two flavors, POSIX and GNU. The POSIX version is |
| the default. You get the GNU version after |
|
|
| </p><pre class="screen"> |
| #define _GNU_SOURCE |
| #include <string.h> |
| </pre><p> |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.35"></a>What's new and what changed in 1.7.35</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Performance improvements of the new account DB handling. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Since 1.7.34, chmod does not always affect the POSIX permission mask as |
| returned by stat(2) or printed by ls(1), due to the improved POSIX ACL |
| handling. However, that's still far from perfect, so, as a temporary |
| workaround, chmod now checks if secondary groups and users in the ACL |
| have more permissions than the primary group. If so, the permissions of |
| the secondary users and groups will be reduced according to the mask |
| given by the new primary group permissions. I.e, chmod 600 will remove |
| all permissions from the primary group as well as all secondary user and |
| group entries in the ACL. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Change handling of group permissions if owner SID == group SID. Now the |
| group permissions don't mirror the user permissions anymore, thus |
| leading to less hassle with security-conscious applications. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Allow group SID to be the same as owner SID for "Microsoft Accounts". |
| Those have the group in their user token set to the owner SID by |
| default. Drop the workaround to change their primary group to "Users". |
| It's not required anymore due to the aforementioned changes. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Change getfacl long options from --all to --access and from --dir to |
| --default, along the lines of the Linux getfacl tool. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Don't raise a SIGSYS signal in the XSI IPC functions if cygserver is not |
| running. Just return -1 with errno set to ENOSYS. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New APIs: cabsl, cimagl, creall, finitel, hypotl, sqrtl. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API: issetugid. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.34"></a>What's new and what changed in 1.7.34</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Cygwin can now generate passwd/group entries directly from Windows user |
| databases (local SAM or Active Directory), thus allowing to run Cygwin |
| without having to create /etc/passwd and /etc/group files. Introduce |
| /etc/nsswitch.conf file to configure passwd/group handling. |
| </p><p> |
| For bordercase which require to use /etc/passwd and /etc/group files, |
| change mkpasswd/mkgroup to generate passwd/group entries compatible with |
| the entries read from SAM/AD. |
| </p><p>For a description of this exciting new feature see |
| <a class="xref" href="ntsec.html" title="POSIX accounts, permission, and security">the section called “POSIX accounts, permission, and security”</a>. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add -b/--remove-all option to setfacl to reduce the ACL to only the entries |
| representing POSIX permission bits. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add -k/--remove-default option to setfacl to remove all default ACL entries |
| from an ACL. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add restore action to regtool. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Make gethostbyname2 handle numeric host addresses as well as the |
| reserved domain names "localhost" and "invalid" per RFC 6761. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Revamp Solaris ACL implementation to more closely work like POSIX ACLs |
| are supposed to work. Finally implement a CLASS_OBJ emulation. Update |
| getfacl(1)/setfacl(1) accordingly. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The xdr functions are no longer exported for newly built executables. |
| Use libtirpc-devel instead. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| 32 bit only: Change default values for socket buffer size to raise |
| performance on 10Gb networks. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| When spawning a process under another user account, merge the user's |
| default Windows environment into the new process' environment. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New APIs: qsort_r, __bsd_qsort_r. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API: wcstold. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New APIs: __fbufsize, __flbf, __fpending, __freadable, __freading, |
| __fsetlocking, __fwritable, __fwriting. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New APIs: clearerr_unlocked, feof_unlocked, ferror_unlocked, fflush_unlocked, |
| fgetc_unlocked, fgets_unlocked, fgetwc_unlocked, fgetws_unlocked, |
| fileno_unlocked, fputc_unlocked, fputs_unlocked, fputwc_unlocked, |
| fputws_unlocked, fread_unlocked, fwrite_unlocked, getwc_unlocked, |
| getwchar_unlocked, putwc_unlocked, putwchar_unlocked. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API: sockatmark. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.33"></a>What's new and what changed in 1.7.33</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| /proc/cygdrive is a new symlink pointing to the current cygdrive prefix. |
| This can be utilized in scripts to access paths via cygdrive prefix, |
| even if the cygdrive prefix has been changed by the user. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| /proc/partitions now prints the windows mount points the device is |
| mounted on. This allows to recognize the underlying Windows devices of |
| the Cygwin raw device names. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API: quotactl, designed after the Linux/BSD function, but severely |
| restricted: Windows only supports user block quotas on NTFS, no group |
| quotas, no inode quotas, no time constraints. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New APIs: ffsl, ffsll (glibc extensions). |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API: stime (SVr4). |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Provide Cygwin documentation (PDFs and HTML) for offline usage in |
| <code class="filename">/usr/share/doc/cygwin-${version}</code>. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New internal exception handling based on SEH on 64 bit Cygwin. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| When exec'ing applications, check if $PATH exists and is non-empty. If |
| not, add PATH variable with Cygwin installation directory as content to |
| Windows environment to allow loading of Cygwin system DLLs. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Disable CYGWIN "dosfilewarning" option by default. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Improve various header files for C++- and standards-compliance. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Doug Lea malloc implementation update from 2.8.3 to the latest 2.8.6. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| atexit(3) is now exported as statically linked function from libcygwin.a. |
| This allows reliable access to the DSO handle of the caller for newly |
| built executables. The former atexit entry point into the DLL remains |
| for backward compatibility only. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.32"></a>What's new and what changed in 1.7.32</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Export __cxa_atexit and __cxa_finalize to allow C++ standards-compliant |
| destructor handling in libstdc++ and g++ compiled code. |
|
|
| Please note that, in order to benefit from this new feature, C++ code |
| must be recompiled with the upcoming gcc 4.8.3-3 release which will |
| enable the -fuse-cxa-atexit flag by default, and that C++ applications |
| using this feature will not run on older Cygwin releases. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Support more recent CPU flags in /proc/cpuinfo. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.31"></a>What's new and what changed in 1.7.31</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Improve performance of send(2), sendto(2), sendmsg(2) when using small |
| input buffers. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The default pthread_mutex type is now PTHREAD_MUTEX_NORMAL, rather than |
| PTHREAD_MUTEX_ERRORCHECK, just as on Linux. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Align pthread_attr stack functions more closely to Linux. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Mark pthread_attr_getstackaddr and pthread_attr_setstackaddr as deprecated, |
| as on Linux. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.29"></a>What's new and what changed in 1.7.29</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Allow quoting of arguments to the CYGWIN environment variable, i.e., |
| set CYGWIN=error_start="c:\bin\someprogram -T" |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Console screen clearing works more like xterm or mintty. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.28"></a>What's new and what changed in 1.7.28</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| popen now supports the Glibc 'e' flag to set the FD_CLOEXEC flag on the pipe |
| in a thread-safe way. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New netinet/ip6.h header. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Switch to BSD FILE stream fopen/exit semantics, as in all BSD variants |
| and Linux/GLibc: Don't fflush/lseek a FILE stream on fclose and exit, |
| if it only has been read from. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.27"></a>What's new and what changed in 1.7.27</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Don't create native symlinks with target paths having long path prefixes |
| "\\?\" if the target path is shorter than MAX_PATH characters. This works |
| around a Windows 8.1 bug: The ShellExecuteW fails if the lpFile parameter |
| points to a native NTFS symlink with a target path prefixed with "\\?\". |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.26"></a>What's new and what changed in 1.7.26</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| getaddrinfo now supports glibc-specific International Domain Name (IDN) |
| extension flags: AI_IDN, AI_CANONIDN, AI_IDN_ALLOW_UNASSIGNED, |
| AI_IDN_USE_STD3_ASCII_RULES. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| getnameinfo now supports glibc-specific International Domain Name (IDN) |
| extension flags: NI_IDN, NI_IDN_ALLOW_UNASSIGNED, NI_IDN_USE_STD3_ASCII_RULES. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Slightly improve randomness of /dev/random emulation. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Allow to use advisory locking on any device. POSIX fcntl and lockf locking |
| works with any device, BSD flock locking only with devices backed by an OS |
| handle. Right now this excludes console windows on pre Windows 8, as well as |
| almost all virtual files under /proc from BSD flock locking. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The header /usr/include/exceptions.h, containing implementation details for |
| 32 bit Windows' exception handling only, has been removed. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Preliminary, experimental support of the posix_spawn family of functions. |
| New associated header /usr/include/spawn.h. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.25"></a>What's new and what changed in 1.7.25</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Change magic number associated with process information block so that 32-bit |
| Cygwin processes don't try to interpret 64-bit information and vice-versa. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Redefine content of mtget tape info struct to allow fetching the number of |
| partitions on a tape. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.24"></a>What's new and what changed in 1.7.24</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Allow application override of posix_memalign. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.23"></a>What's new and what changed in 1.7.23</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Added CYGWIN environment variable keyword "wincmdln" which causes Cygwin to |
| send the full windows command line to any subprocesses. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.22"></a>What's new and what changed in 1.7.22</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Support for /dev/mem, /dev/kmem and /dev/port removed, since OS support |
| was limited to 32 bit Windows XP only. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Added cygwin GetCommandLine wrappers which will allow Cygwin programs to |
| (appear to) use the Windows command line functions. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| regcomp(3) now allows character values >= 0x80 if the current codeset is |
| ASCII (default codeset in the "C"/"POSIX" locale). This allows patterns |
| containing arbitrary byte values as GLibc's regcomp. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.21"></a>What's new and what changed in 1.7.21</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| New API: rawmemchr. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.19"></a>What's new and what changed in 1.7.19</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Drop support for Windows 2000 and Windows XP pre-SP3. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add support for building a 64 bit version of Cygwin on x86_64 natively. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add support for creating native NTFS symlinks starting with Windows Vista |
| by setting the CYGWIN=winsymlinks:native or CYGWIN=winsymlinks:nativestrict |
| option. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add support for AFS filesystem. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Preliminary support for mandatory locking via fcntl/flock/lockf, using Windows |
| locking semantics. New F_LCK_MANDATORY fcntl command. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New APIs: __b64_ntop, __b64_pton, arc4random, arc4random_addrandom, |
| arc4random_buf, arc4random_stir, arc4random_uniform. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.18"></a>What's new and what changed in 1.7.18</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p>Added Windows console cursor appearance support.</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Show/Hide Cursor mode (DECTCEM): "ESC[?25h" / "ESC[?25l" |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Set cursor style (DECSCUSR): "ESC[n q" (note the space before the q); |
| where n is 0, 1, 2 for block cursor, 3, 4 for underline cursor (all |
| disregarding blinking mode), or > 4 to set the cursor height to a |
| percentage of the cell height. |
| </p></li></ul></div></li><li class="listitem" style="list-style-type: disc"><p> |
| For performance reasons, Cygwin does not try to create sparse files |
| automatically anymore, unless you use the new "sparse" mount option. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API: cfsetspeed. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.17"></a>What's new and what changed in 1.7.17</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Support the "e" flag to fopen(3). This is a Glibc extension which |
| allows to fopen the file with the O_CLOEXEC flag set. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Support the "x" flag to fopen(3). This is a Glibc/C11 extension which |
| allows to open the file with the O_EXCL flag set. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.16"></a>What's new and what changed in 1.7.16</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| New API: getmntent_r, memrchr. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Recognize ReFS filesystem. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.15"></a>What's new and what changed in 1.7.15</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| CYGWIN=pipe_byte option now forces the opening of pipes in byte mode rather than message mode. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.14"></a>What's new and what changed in 1.7.14</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Add mouse reporting modes 1005, 1006 and 1015 to console window. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.13"></a>What's new and what changed in 1.7.13</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| mkpasswd and mkgroup now try to print an entry for the TrustedInstaller |
| account existing since Windows Vista/Server 2008. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Terminal typeahead when switching from canonical to non-canonical mode |
| is now properly flushed. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.12"></a>What's new and what changed in 1.7.12</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Cygwin now automatically populates the /dev directory with all existing |
| POSIX devices. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add virtual /proc/PID/mountinfo file. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| flock now additionally supports the following scenario, which requires |
| to propagate locks to the parent process: |
| </p><pre class="screen"> |
| ( |
| flock -n 9 || exit 1 |
| # ... commands executed under lock ... |
| } 9>/var/lock/mylockfile |
| </pre><p> |
| Only propagation to the direct parent process is supported so far, |
| not to grand parents or sibling processes. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add a "detect_bloda" setting for the CYGWIN environment variable to help |
| finding potential BLODAs. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.11"></a>What's new and what changed in 1.7.11</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| New <span class="command"><strong>pldd</strong></span> command for listing DLLs loaded by a process. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API: scandirat. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Change the way remote shares mapped to drive letters are recognized when |
| creating the cygdrive directory. If Windows claims the drive is |
| unavailable, don't show it in the cygdrive directory listing. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Raise default stacksize of pthreads from 512K to 1 Meg. It can still be |
| changed using the pthread_attr_setstacksize call. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.10"></a>What's new and what changed in 1.7.10</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Drop support for Windows NT4. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The CYGWIN environment variable options "envcache", "strip_title", "title", |
| "tty", and "upcaseenv" have been removed. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| If the executable (and the system) is large address aware, the application heap |
| will be placed in the large memory area. The <span class="command"><strong>peflags</strong></span> tool |
| from the <code class="literal">rebase</code> package can be used to set the large |
| address awareness flag in the executable file header. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The registry setting "heap_chunk_in_mb" has been removed, in favor of a new |
| per-executable setting in the executable file header which can be set using the |
| <span class="command"><strong>peflags</strong></span> tool. See <a class="xref" href="setup-maxmem.html" title="Changing Cygwin's Maximum Memory">the section called “Changing Cygwin's Maximum Memory”</a> |
| for more information. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The CYGWIN=tty mode using pipes to communicate with the console in a pseudo |
| tty-like mode has been removed. Either just use the normal Windows console |
| as is, or use a terminal application like <span class="command"><strong>mintty</strong></span>. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New <span class="command"><strong>getconf</strong></span> command for querying confstr(3), pathconf(3), |
| sysconf(3), and limits.h configuration. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New <span class="command"><strong>tzset</strong></span> utility to generate a POSIX-compatible TZ |
| environment variable from the Windows timezone settings. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The passwd command now allows an administrator to use the -R command for |
| other user accounts: passwd -R username. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Pthread spinlocks. New APIs: pthread_spin_destroy, pthread_spin_init, |
| pthread_spin_lock, pthread_spin_trylock, pthread_spin_unlock. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Pthread stack address management. New APIs: pthread_attr_getstack, |
| pthread_attr_getstackaddr, pthread_attr_getguardsize, pthread_attr_setstack, |
| pthread_attr_setstackaddr, pthread_attr_setguardsize, pthread_getattr_np. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| POSIX Clock Selection option. New APIs: clock_nanosleep, |
| pthread_condattr_getclock, pthread_condattr_setclock. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| clock_gettime(3) and clock_getres(3) accept per-process and per-thread CPU-time |
| clocks, including CLOCK_PROCESS_CPUTIME_ID and CLOCK_THREAD_CPUTIME_ID. |
| New APIs: clock_getcpuclockid, pthread_getcpuclockid. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| GNU/glibc error.h error reporting functions. New APIs: error, error_at_line. |
| New exports: error_message_count, error_one_per_line, error_print_progname. |
| Also, perror and strerror_r no longer clobber strerror storage. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| C99 <tgmath.h> type-generic macros. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| /proc/loadavg now shows the number of currently running processes and the |
| total number of processes. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Added /proc/devices and /proc/misc, which lists supported device types and |
| their device numbers. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Added /proc/swaps, which shows the location and size of Windows paging file(s). |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Added /proc/sysvipc/msg, /proc/sysvipc/sem, and /proc/sysvipc/shm which |
| provide information about System V IPC message queues, semaphores, and |
| shared memory. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| /proc/version now shows the username of whomever compiled the Cygwin DLL |
| as well as the version of GCC used when compiling. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| dlopen now supports the Glibc-specific RTLD_NODELETE and RTLD_NOOPEN flags. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The printf(3) and wprintf(3) families of functions now handle the %m |
| conversion flag. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Other new API: clock_settime, __fpurge, getgrouplist, get_current_dir_name, |
| getpt, ppoll, psiginfo, psignal, ptsname_r, sys_siglist, pthread_setschedprio, |
| pthread_sigqueue, sysinfo. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.9"></a>What's new and what changed in 1.7.9</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| New API: strchrnul. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.8"></a>What's new and what changed in 1.7.8</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Drop support for Windows NT4 prior to Service Pack 4. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Reinstantiate Cygwin's ability to delete an empty directory which is the |
| current working directory of the same or another process. Same for any |
| other empty directory which has been opened by the same or another process. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Cygwin now ships the C standard library fenv.h header file, and implements the |
| related APIs (including GNU/glibc extensions): feclearexcept, fedisableexcept, |
| feenableexcept, fegetenv, fegetexcept, fegetexceptflag, fegetprec, fegetround, |
| feholdexcept, feraiseexcept, fesetenv, fesetexceptflag, fesetprec, fesetround, |
| fetestexcept, feupdateenv, and predefines both default and no-mask FP |
| environments. See the |
| <a class="ulink" href="http://www.gnu.org/software/libc/manual/html_node/Arithmetic.html" target="_top"> |
| GNU C Library manual</a> for full details of this functionality. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Support for the C99 complex functions, except for the "long double" |
| implementations. New APIs: cacos, cacosf, cacosh, cacoshf, carg, cargf, casin, |
| casinf, casinh, casinhf, catan, catanf, catanh, catanhf, ccos, ccosf, ccosh, |
| ccoshf, cexp, cexpf, cimag, cimagf, clog, clogf, conj, conjf, cpow, cpowf, |
| cproj, cprojf, creal, crealf, csin, csinf, csinh, csinhf, csqrt, csqrtf, ctan, |
| ctanf, ctanh, ctanhf. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Fix the width of "CJK Ambiguous Width" characters to 1 for singlebyte charsets |
| and 2 for East Asian multibyte charsets. (For UTF-8, it remains dependent on |
| the specified language, and the "@cjknarrow" locale modifier can still be used |
| to force width 1.) |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The strerror_r interface now has two flavors; if _GNU_SOURCE is |
| defined, it retains the previous behavior of returning char * |
| (but the result is now guaranteed to be NUL-terminated); otherwise |
| it now obeys POSIX semantics of returning int. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| /proc/sys now allows unfiltered access to the native NT namespace. Access |
| restrictions still apply. Direct device access via /proc/sys is not yet |
| supported. File system access via block devices works. For instance |
| (note the trailing slash!) |
| </p><pre class="screen"> |
| bash$ cd /proc/sys/Device/HarddiskVolumeShadowCopy1/ |
| </pre><p> |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Other new APIs: llround, llroundf, madvise, pthread_yield. |
| Export program_invocation_name, program_invocation_short_name. |
| Support TIOCGPGRP, TIOCSPGRP ioctls. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.7"></a>What's new and what changed in 1.7.7</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Partially revert the 1.7.6 change to set the Win32 current working directory |
| (CWD) always to an invalid directory, since it breaks backward compatibility |
| too much. The Cygwin CWD and the Win32 CWD are now kept in sync again, unless |
| the Cygwin CWD is not usable as Win32 CWD. See the reworked |
| <a class="xref" href="using.html#pathnames-win32-api" title="Using the Win32 file API in Cygwin applications">the section called “Using the Win32 file API in Cygwin applications”</a> for details. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Make sure to follow the Microsoft security advisory concerning DLL hijacking. |
| See the <a class="ulink" href="http://www.microsoft.com/technet/security/advisory/2269637.mspx" target="_top">Microsoft Security Advisory (2269637) "Insecure Library Loading Could Allow Remote Code Execution"</a> for details. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Allow to link against -lbinmode instead of /lib/binmode.o. Same for |
| -ltextmode, -ltextreadmode and -lautomode. |
| See <a class="xref" href="using-textbinary.html#textbin-devel" title="Programming">the section called “Programming”</a> for details. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.6"></a>What's new and what changed in 1.7.6</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Add new mount options "dos" and "ihash" to allow overriding Cygwin default |
| behaviour on broken filesystems not recognized by Cygwin. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add new mount option "bind" to allow remounting parts of the POSIX file |
| hirarchy somewhere else. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Ttys and ptys are handled as securable objects using file-like permissions |
| and owner/group information. <span class="command"><strong>chmod</strong></span> and |
| <span class="command"><strong>chown</strong></span> now work on ttys/ptys. A new mechanism is used |
| to propagate pty handles safely to other processes, which does not require |
| to use Cygserver. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Pass on coresize settings made with setrlimit(2). This allows shells to |
| disable creating stackdump files in child processes via |
| </p><pre class="screen">ulimit -c 0</pre><p> in bash or </p><pre class="screen">limit coredumpsize 0</pre><p> |
| in tcsh. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Locale categories contain all localization strings additionally as wide-char |
| strings. locale(1) prints these values just as on Linux. nl_langinfo(3) |
| allows to fetch them. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New interfaces mkostemp(3) and mkostemps(3) are added. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New virtual file /proc/filesystems. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| clock_gettime(3) and clock_getres(3) accept CLOCK_MONOTONIC. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| DEPRECATED with 1.7.7: Cygwin handles the current working directory entirely |
| on its own. The Win32 current working directory is set to an invalid path to |
| be out of the way. [...] |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.5"></a>What's new and what changed in 1.7.5</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Support for DEC Backarrow Key Mode escape sequences (ESC [ ? 67 h, ESC [ ? 67 l) |
| in Windows console. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.3"></a>What's new and what changed in 1.7.3</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Support for GB2312/EUC-CN. These charsets are implemented as aliases to GBK. |
| GB2312 is now the default charset name for the locales zh_CN and zh_SG, just |
| as on Linux. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Modification and access timestamps of devices reflect the current time. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.2"></a>What's new and what changed in 1.7.2</h3></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p>Localization support has been much improved.</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Cygwin now handles locales using the underlying Windows locale |
| support. The locale must exist in Windows to be recognized. |
| Locale aliases from the file /usr/share/locale/locale.alias are also |
| allowed, as long as their replacement is supported by the underlying Windows. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New tool "locale" to fetch locale information and default locales based on |
| the Windows default settings as well as lists of all supported locales |
| and character sets. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Default charset for locales without explicit charset is now chosen |
| from a list of Linux-compatible charsets. |
| </p><p> |
| For instance: en_US -> ISO-8859-1, ja_JP -> EUC-JP, zh_TW -> Big5. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Added support for the charsets GEORGIAN-PS, PT154, and TIS-620. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Support for the various locale modifiers to switch charsets as on Linux. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Default charset in the "C" or "POSIX" locale has been changed back |
| from UTF-8 to ASCII, to avoid problems with applications |
| expecting a singlebyte charset in the "C"/"POSIX" locale. Still use |
| UTF-8 internally for filename conversion in this case. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| LC_COLLATE, LC_MONETARY, LC_NUMERIC, and LC_TIME localization is |
| enabled via Windows locale support. LC_MESSAGES is enabled via a big |
| table with localized strings. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| fnmatch(3), regcomp(3), regexec(3) calls are now multibyte-aware. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| printf(3), wprintf(3) families of functions now handle the grouping |
| flag, the apostrophe <code class="literal">'</code>, per POSIX-1.2008. The |
| integer portion of the result of a decimal conversion (%i, %d, %u, %f, |
| %F, %g, %G) will be formatted with thousands' grouping characters. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| strftime(3), wcsftime(3), and strptime(3) now handle the E and O format |
| modifiers to print/scan alternative date and time representations or to |
| use alternative digits in locales which support this. Additionally these |
| functions now also support the padding modifiers '0' and '+', as well as |
| a field width per POSIX-1.2008. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New strfmon(3) call. |
| </p></li></ul></div></li><li class="listitem" style="list-style-type: disc"><p> |
| Support open(2) flags O_CLOEXEC and O_TTY_INIT flags. Support fcntl |
| flag F_DUPFD_CLOEXEC. Support socket flags SOCK_CLOEXEC and SOCK_NONBLOCK. |
| Add new Linux-compatible API calls accept4(2), dup3(2), and pipe2(2). |
| Support the signal SIGPWR. |
| </p></li><li class="listitem" style="list-style-type: disc"><p>Enhanced Windows console support.</p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| The console's backspace keycode can be changed using 'stty erase'. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Function keys send distinguished escape sequences compatible with rxvt. |
| Keypad keys send distinguished escape sequences, xterm-style. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Support of combining Alt and AltGr modifiers in console window |
| (compatible with xterm and mintty), so that e.g. Alt-@ sends ESC @ |
| also on keyboards where @ is mapped to an AltGr combination. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Report mouse wheel scroll events in mouse reporting mode 1000 (note: |
| this doesn't seem to work on all systems, assumedly due to driver |
| interworking issues). |
| Add mouse reporting mode 1002 to report mouse drag movement. |
| Add mouse reporting mode 1003 to report any mouse movement. |
| Add focus event reporting (mode 1004), compatible with xterm and mintty. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add escape sequences for not bold (22), not invisible (28), not |
| blinking (25) (compatible with xterm and mintty). |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Support VT100 line drawing graphics mode in console window (compatible |
| with xterm and mintty). |
| </p></li></ul></div></li><li class="listitem" style="list-style-type: disc"><p> |
| Handle native DOS paths always as if mounted with "posix=0,noacl". |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Handle UNC paths starting with slashes identical to /cygdrive paths. |
| In other words, use the /cygdrive mount flags for these paths as well. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Recognize NWFS filesystem and workaround broken OS call. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New support for eXtensible Data Record (XDR) encoding and decoding, |
| as defined by RFCs 1014, 1832, and 4506. The XDR protocol and |
| functions are useful for cross-platfrom data exchange, and are |
| commonly used as the core data interchange format for Remote |
| Procedure Call (RPC) and NFS. |
| </p></li></ul></div></div><div class="sect2"><div class="titlepage"><div><div><h3 class="title"><a name="ov-new1.7.1"></a>What's new and what changed from 1.5 to 1.7</h3></div></div></div><div class="sect3"><div class="titlepage"><div><div><h4 class="title"><a name="ov-new1.7-os"></a>OS related changes</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Windows 95, 98 and Me are not supported anymore. The new Cygwin 1.7 DLL |
| will not run on any of these systems. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add support for Windows 7 and Windows Server 2008 R2. |
| </p></li></ul></div></div><div class="sect3"><div class="titlepage"><div><div><h4 class="title"><a name="ov-new1.7-file"></a>File Access related changes</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Mount points are no longer stored in the registry. Use /etc/fstab and |
| /etc/fstab.d/$USER instead. Mount points created with mount(1) are only |
| local to the current session and disappear when the last Cygwin process |
| in the session exits. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Cygwin creates the mount points for /, /usr/bin, and /usr/lib |
| automatically from it's own position on the disk. They don't have to be |
| specified in /etc/fstab. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| If a filename cannot be represented in the current character set, the |
| character will be converted to a sequence Ctrl-X + UTF-8 representation |
| of the character. This allows to access all files, even those not |
| having a valid representation of their filename in the current character |
| set. To always have a valid string, use the UTF-8 charset by |
| setting the environment variable $LANG, $LC_ALL, or $LC_CTYPE to a valid |
| POSIX value, such as "en_US.UTF-8". |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| PATH_MAX is now 4096. Internally, path names can be as long as the |
| underlying OS can handle (32K). |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| struct dirent now supports d_type, filled out with DT_REG or DT_DIR. |
| All other file types return as DT_UNKNOWN for performance reasons. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The CYGWIN environment variable options "ntsec" and "smbntsec" have been |
| replaced by the per-mount option "acl"/"noacl". |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The CYGWIN environment variable option "ntea" has been removed without |
| substitute. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The CYGWIN environment variable option "check_case" has been removed in |
| favor of real case-sensitivity on file systems supporting it. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Creating filenames with special DOS characters '"', '*', ':', '<', |
| '>', '|' is supported. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Creating files with special DOS device filename components ("aux", |
| "nul", "prn") is supported. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| File names are case sensitive if the OS and the underlying file system |
| supports it. Works on NTFS and NFS. Does not work on FAT and Samba |
| shares. Requires to change a registry key (see the User's Guide). Can |
| be switched off on a per-mount basis. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Due to the above changes, managed mounts have been removed. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Incoming DOS paths are always handled case-insensitive and get no POSIX |
| permission, as if they are mounted with noacl,posix=0 mount flags. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| unlink(2) and rmdir(2) try very hard to remove files/directories even if |
| they are currently accessed or locked. This is done by utilizing the |
| hidden recycle bin directories and marking the files for deletion. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| rename(2) rewritten to be more POSIX conformant. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| access(2) now performs checks using the real user ID, as required by |
| POSIX; the old behavior of querying based on effective user ID is |
| available through the new faccessat(2) and euidaccess(2) APIs. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add st_birthtim member to struct stat. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| File locking is now advisory, not mandatory anymore. The fcntl(2) and |
| the new lockf(2) APIs create and maintain locks with POSIX semantics, |
| the flock(2) API creates and maintains locks with BSD semantics. POSIX |
| and BSD locks are independent of each other. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Implement atomic O_APPEND mode. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New open(2) flags O_DIRECTORY, O_EXEC and O_SEARCH. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Make the "plain file with SYSTEM attribute set" style symlink default |
| again when creating symlinks. Only create Windows shortcut style |
| symlinks if CYGWIN=winsymlinks is set in the environment. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Symlinks now use UTF-16 encoding for the target filename for better |
| internationalization support. Cygwin 1.7 can read all old style |
| symlinks, but the new style is not compatible with older Cygwin |
| releases. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Handle NTFS native symlinks available since Vista/2008 as symlinks (but |
| don't create Vista/2008 symlinks due to unfortunate OS restrictions). |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Recognize NFS shares and handle them using native mechanisms. Recognize |
| and create real symlinks on NFS shares. Get correct stat(2) information |
| and set real mode bits on open(2), mkdir(2) and chmod(2). |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Recognize MVFS and workaround problems manipulating metadata and handling |
| DOS attributes. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Recognize Netapp DataOnTap drives and fix inode number handling. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Recognize Samba version beginning with Samba 3.0.28a using the new |
| extended version information negotiated with the Samba developers. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Stop faking hardlinks by copying the file on filesystems which don't |
| support hardlinks natively (FAT, FAT32, etc.). Just return an error |
| instead, just like Linux. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| List servers of all accessible domains and workgroups in // instead of |
| just the servers in the own domain/workgroup. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Support Linux-like extended attributes ([fl]getxattr, [fl]listxattr, |
| [fl]setxattr, [fl]removexattr). |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New file conversion API for conversion from Win32 to POSIX path and vice |
| versa (cygwin_conv_path, cygwin_create_path, cygwin_conv_path_list). |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New openat family of functions: openat, faccessat, fchmodat, fchownat, |
| fstatat, futimesat, linkat, mkdirat, mkfifoat, mknodat, readlinkat, |
| renameat, symlinkat, unlinkat. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Other new APIs: posix_fadvise, posix_fallocate, funopen, fopencookie, |
| open_memstream, open_wmemstream, fmemopen, fdopendir, fpurge, mkstemps, |
| eaccess, euidaccess, canonicalize_file_name, fexecve, execvpe. |
| </p></li></ul></div></div><div class="sect3"><div class="titlepage"><div><div><h4 class="title"><a name="ov-new1.7-net"></a>Network related changes</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| New implementation for blocking sockets and select on sockets which is |
| supposed to allow POSIX-compatible sharing of sockets between threads |
| and processes. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| send/sendto/sendmsg now send data in 64K chunks to circumvent an |
| internal buffer problem in WinSock (KB 201213). |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New send/recv option MSG_DONTWAIT. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| IPv6 support. New APIs getaddrinfo, getnameinfo, freeaddrinfo, |
| gai_strerror, in6addr_any, in6addr_loopback. On IPv6-less systems, |
| replacement functions are available for IPv4. On systems with IPv6 |
| enabled, the underlying WinSock functions are used. While I tried hard |
| to get the functionality as POSIXy as possible, keep in mind that a |
| *fully* conformant implementation of getaddrinfo and other stuff is only |
| available starting with Windows Vista/2008. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Resolver functions (res_init, res_query, res_search, res_querydomain, |
| res_mkquery, res_send, dn_comp, dn_expand) are now part of Cygwin. |
| Applications don't have to link against minires anymore. Actually, this |
| *is* the former libminires.a. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| rcmd is now implemented inside of Cygwin, instead of calling the WinSock |
| function. This allows rsh(1) usage on Vista/2008 and later, which |
| dropped this function from WinSock. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Define multicast structures in netinet/in.h. Note that fully conformant |
| multicast support is only available beginning with Vista/2008. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Improve get_ifconf. Redefine struct ifreq and subsequent datastructures |
| to be able to keep more information. Support SIOCGIFINDEX, |
| SIOCGIFDSTADDR and the Cygwin specific SIOCGIFFRNDLYNAM. Support real |
| interface flags on systems supporting them. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Other new APIs: bindresvport, bindresvport_sa, gethostbyname2, |
| iruserok_sa, rcmd_af, rresvport_af. getifaddrs, freeifaddrs, |
| if_nametoindex, if_indextoname, if_nameindex, if_freenameindex. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add /proc/net/if_inet6. |
| </p></li></ul></div></div><div class="sect3"><div class="titlepage"><div><div><h4 class="title"><a name="ov-new1.7-device"></a>Device related changes</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Reworked pipe implementation which uses overlapped IO to create more |
| reliable interruptible pipes and fifos. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The CYGWIN environment variable option "binmode" has been removed. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Improved fifo handling by using native Windows named pipes. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Detect when a stdin/stdout which looks like a pipe is really a tty. |
| Among other things, this allows a debugged application to recognize that |
| it is using the same tty as the debugger. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Support UTF-8 in console window. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| In the console window the backspace key now emits DEL (0x7f) instead of |
| BS (0x08), Alt-Backspace emits ESC-DEL (0x1b,0x7f) instead of DEL |
| (0x7f), same as the Linux console and xterm. Control-Space now emits an |
| ASCII NUL (0x0) character. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Support up to 64 serial interfaces using /dev/ttyS0 - /dev/ttyS63. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Support up to 128 raw disk drives /dev/sda - /dev/sddx. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API: cfmakeraw, get_avphys_pages, get_nprocs, get_nprocs_conf, |
| get_phys_pages, posix_openpt. |
| </p></li></ul></div></div><div class="sect3"><div class="titlepage"><div><div><h4 class="title"><a name="ov-new1.7-posix"></a>Other POSIX related changes</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| A lot of character sets are supported now via a call to setlocale(). |
| The setting of the environment variables $LANG, $LC_ALL or $LC_CTYPE |
| will be used. For instance, setting $LANG to "de_DE.ISO-8859-15" before |
| starting a Cygwin session will use the ISO-8859-15 character set in the |
| entire session. The default locale in the absence of one of the |
| aforementioned environment variables is "C.UTF-8". |
| </p><p> |
| The full list of supported character sets: "ASCII", "ISO-8859-x" with x |
| in 1-16, except 12, "UTF-8", Windows codepages "CPxxx", with xxx in |
| (437, 720, 737, 775, 850, 852, 855, 857, 858, 862, 866, 874, 1125, 1250, |
| 1251, 1252, 1253, 1254, 1255, 1256, 1257, 1258), "KOI8-R", "KOI8-U", |
| "SJIS", "GBK", "eucJP", "eucKR", and "Big5". |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Allow multiple concurrent read locks per thread for pthread_rwlock_t. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Implement pthread_kill(thread, 0) as per POSIX. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New API for POSIX IPC: Named semaphores: sem_open, sem_close, |
| sem_unlink. Message queues: mq_open, mq_getattr, mq_setattr, mq_notify, |
| mq_send, mq_timedsend, mq_receive, mq_timedreceive, mq_close, mq_unlink. |
| Shared memory: shm_open, shm_unlink. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Only declare expected functions in <strings.h>, don't include |
| <string.h> from here. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Support for WCONTINUED, WIFCONTINUED() added to waitpid and wait4. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New APIs: _Exit, confstr, insque, remque, sys_sigabbrev, posix_madvise, |
| posix_memalign, reallocf, exp10, exp10f, pow10, pow10f, lrint, lrintf, |
| rint, rintf, llrint, llrintf, llrintl, lrintl, rintl, mbsnrtowcs, |
| strcasestr, stpcpy, stpncpy, wcpcpy, wcpncpy, wcsnlen, wcsnrtombs, |
| wcsftime, wcstod, wcstof, wcstoimax, wcstok, wcstol, wcstoll, wcstoul, |
| wcstoull, wcstoumax, wcsxfrm, wcscasecmp, wcsncasecmp, fgetwc, fgetws, |
| fputwc, fputws, fwide, getwc, getwchar, putwc, putwchar, ungetwc, |
| asnprintf, dprintf, vasnprintf, vdprintf, wprintf, fwprintf, swprintf, |
| vwprintf, vfwprintf, vswprintf, wscanf, fwscanf, swscanf, vwscanf, |
| vfwscanf, vswscanf. |
| </p></li></ul></div></div><div class="sect3"><div class="titlepage"><div><div><h4 class="title"><a name="ov-new1.7-sec"></a>Security related changes</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| Getting a domain user's groups is hopefully more bulletproof now. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Cygwin now comes with a real LSA authentication package. This must be |
| manually installed by a privileged user using the /bin/cyglsa-config |
| script. The advantages and disadvantages are noted in |
| https://cygwin.com/ml/cygwin-developers/2006-11/msg00000.html |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Cygwin now allows storage and use of user passwords in a hidden area of |
| the registry. This is tried first when Cygwin is called by privileged |
| processes to switch the user context. This allows, for instance, ssh |
| public key sessions with full network credentials to access shares on |
| other machines. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New options have been added to the mkpasswd and mkgroup tools to ease |
| use in multi-machine and multi-domain environments. The existing |
| options have a slightly changed behaviour. |
| </p></li></ul></div></div><div class="sect3"><div class="titlepage"><div><div><h4 class="title"><a name="ov-new1.7-misc"></a>Miscellaneous</h4></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: bullet; "><li class="listitem" style="list-style-type: disc"><p> |
| New ldd utility, similar to Linux. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| New link libraries libdl.a, libresolv.a, librt.a. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Fallout from the long path names: If the current working directory is |
| longer than 260 bytes, or if the current working directory is a virtual |
| path (like /proc, /cygdrive, //server), don't call native Win32 programs |
| since they don't understand these paths. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| On the first usage of a DOS path (C:\foo, \\foo\bar), the Cygwin DLL |
| emits a scary warning that DOS paths shouldn't be used. This warning |
| may be disabled via the new CYGWIN=nodosfilewarning setting. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| The CYGWIN environment variable option "server" has been removed. |
| Cygwin automatically uses cygserver if it's available. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Allow environment of arbitrary size instead of a maximum of 32K. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Don't force uppercase environment when started from a non-Cygwin |
| process. Except for certain Windows and POSIX variables which are |
| always uppercased, preserve environment case. Switch back to old |
| behaviour with the new CYGWIN=upcaseenv setting. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Detect and report a missing DLL on process startup. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add /proc/registry32 and /proc/registry64 paths to access 32 bit and 64 |
| bit registry on 64 bit systems. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add the ability to distinguish registry keys and registry values with |
| the same name in the same registry subtree. The key is called "foo" and |
| the value will be called "foo%val" in this case. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Align /proc/cpuinfo more closly to Linux content. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Add /proc/$PID/mounts entries and a symlink /proc/mounts pointing to |
| /proc/self/mounts as on Linux. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Optimized strstr and memmem implementation. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Remove backwards compatibility with old signal masks. (Some *very* old |
| programs which use signal masks may no longer work correctly). |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Cygwin now exports wrapper functions for libstdc++ operators new and |
| delete, to support the toolchain in implementing full C++ standards |
| conformance when working with shared libraries. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Different Cygwin installations in different paths can be run in parallel |
| without knowing of each other. The path of the Cygwin DLL used in a |
| process is a key used when creating IPC objects. So different Cygwin |
| DLLs are running in different namespaces. |
| </p></li><li class="listitem" style="list-style-type: disc"><p> |
| Each Cygwin DLL stores its path and installation key in the registry. |
| This allows troubleshooting of problems which could be a result of |
| having multiple concurrent Cygwin installations. |
| </p></li></ul></div></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="highlights.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="overview.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="setup-net.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Highlights of Cygwin Functionality </td><td width="20%" align="center"><a accesskey="h" href="cygwin-ug-net.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 2. Setting Up Cygwin</td></tr></table></div></body></html> |
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