[1.7] Updated: cygwin-1.7.0-37
Tue Dec 23 21:19:00 GMT 2008
I've just made a new release of the experimental 1.7 version of the
Cygwin and utilities available. The ChangeLog is after the unsubscribe
As announced in Corinna's first message about the 1.7 test, just
download http://cygwin.com/setup-1.7.exe and use that setup tool to
install Cygwin 1.7. As usual, please report bugs and problems to the
mailing list cygwin AT cygwin DOT com.
THIS IS STILL A TEST RELEASE. DON'T USE IN PRODUCTION ENVIRONMENTS.
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What's new in 1.7.0-37:
- Several changes were made in the pipe handling code to attempt to
close some races. This may fix reported problems with truncated
- HKEY_PERFORMANCE_DATA registry keys are properly handled in
- strace output prior to full process information is now properly
displayed by the strace utility. Previously it had been silently
What's new in 1.7.0-36:
- Incoming DOS pathnames are now always treated in Windows default
settings: No POSIX permissions, no ACLs, no case sensitivity.
- Unambiguously decode registry paths pointing to key default values
("@"), registry keys called @ ("%40") and registry values called @
("%40" or "%40%val") according to the registry special character
encoding rules as described in the latest User's Guide.
- New functions: fgetwc, fgetws, fputwc, fputws, fwide, getwc, getwchar,
putwc, putwchar, ungetwc.
- Fix handling of .lnk suffixes. So far it was possible to create
a file foo.lnk or a directory bar.lnk and then call "cat foo" or
"cd bar" successfully. This has been fixed so that .lnk handling
really only applies to Cygwin shortcut symlinks.
- Fix potential misbehaviour of setuid code when LSA access is denied.
- Fix using absolute DOS paths in openat familiy of functions.
- Fix dup(2) on pseudo registry handles.
- Drop spurious warnings about using DOS paths.
- A few bugfixes to the new `passwd -R' command.
- A few users are reporting a problem with reading /etc/passwd and/or
/etc/group files on the first start of the first Cygwin process after
I'd like to ask everybody being able to reproduce this problem and,
even better, with coding and/or debugging skills, to help debugging
- Q: How do I know that I'm running Cygwin 1.7.0-36?
A: The `uname -v' command prints "2008-12-19 13:21"
Q: Uh, ok. And what date would be printed if I'm still
running Cygwin 1.7.0-35?
A: "2008-12-09 14:20"
Have a nice Holiday,
Just for completeness, here's once more the list of Changes in 1.7.0
related to 1.5.25:
OS releated changes:
- Windows 95, 98 and Me are not supported anymore. The new DLL will
not run on any of these systems.
File Access related changes:
- 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.
- PATH_MAX is now 4096. Internally, path names can be as long as the
underlying OS can handle (32K).
- UTF-8 filenames are supported now. So far, this requires to set
the environment variable CYGWIN to contain "codepage:utf8". but this
will likely disappear at one point. The setting of $LANG or $LC_CTYPE
will be used instead.
- 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.
- The CYGWIN environment variable options "ntsec" and "smbntsec" have
been replaced by the per-mount option "acl"/"noacl".
- The CYGWIN environment variable option "ntea" has been removed without
- The CYGWIN environment variable option "check_case" has been removed
in favor of real case-sensitivity on file systems supporting it.
- Creating filenames with special DOS characters '"', '*', ':', '<',
'>', '|' is supported.
- Creating files with special DOS device filename components ("aux",
"nul", "prn") is supported.
- File name 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 base.
- Due to the above changes, managed mounts have been removed.
- Incoming DOS paths are always handled case-insensitive and get no POSIX
permission, as if they are mounted with noacl,posix=0 mount flags.
- 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.
- rename(2) rewritten to be more POSIX conformant.
- Add st_birthtim member to struct stat.
- 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.
- Implement atomic O_APPEND mode.
- Handle NTFS native symlinks available since Vista/2008 as symlinks
(but don't create Vista/2008 symlinks due to unfortunate OS restrictions).
- 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)
- Recognize Netapp DataOnTap drives and fix inode number handling.
- Recognize Samba version beginning with Samba 3.0.28a using the new
extended version information negotiated with the Samba developers.
- List servers of all accessible domains and workgroups in // instead of
just the servers in the own domain/workgroup.
- Support Linux-like extended attributes ([fl]getxattr, [fl]listxattr,
- New file conversion API for conversion from Win32 to POSIX path and
vice versa (cygwin_conv_path, cygwin_create_path, cygwin_conv_path_list).
- New openat family of functions: openat, faccessat, fchmodat, fchownat,
fstatat, futimesat, linkat, mkdirat, mkfifoat, mknodat, readlinkat, renameat,
- Other new APIs: posix_fadvise, posix_fallocate, funopen, fopencookie,
open_memstream, fmemopen, fdopendir.
Network related changes:
- New implementation for blocking sockets and select on sockets which
is supposed to allow POSIX-compatible sharing of sockets between
threads and processes.
- send/sendto/sendmsg now send data in 64K chunks to circumvent an
internal buffer problem in WinSock (KB 201213).
- IPv6 support. New API 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.
- 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.
- rcmd is now implemented inside of Cygwin, instead of calling the
WinSock function. This allows rsh(1) usage on Vista/2008, which
dropped this function from WinSock.
- Define multicast structures in netinet/in.h. Note that fully
conformant multicast support is only available beginning with Vista/2008.
- 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.
- Other new APIs: bindresvport, bindresvport_sa, iruserok_sa, rcmd_af,
rresvport_af. getifaddrs, freeifaddrs, if_nametoindex, if_indextoname,
- Add /proc/net/if_inet6.
Device related changes:
- Reworked pipe implementation which uses overlapped IO to create
more reliable interruptible pipes and fifos.
- The CYGWIN environment variable option "binmode" has been removed.
- Improved fifo handling by using native Windows named pipes.
- 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.
- Support UTF-8 in console window.
- Support up to 64 serial interfaces using /dev/ttyS0 - /dev/ttyS63.
- Support up to 128 raw disk drives /dev/sda - /dev/sddx.
- New API: posix_openpt.
Other POSIX related changes:
- Implement pthread_kill(thread, 0) as per POSIX.
- 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.
- Only declare expected functions in <strings.h>, don't include <string.h>
- New APIs: asnprintf, dprintf, _Exit, vasnprintf, vdprintf, confstr,
posix_madvise, posix_memalign, exp10, exp10f, pow10, pow10f, lrint,
lrintf, rint, rintf, llrint, llrintf, llrintl, lrintl, rintl, insque,
remque, sys_sigabbrev, strcasestr, stpcpy, stpncpy, wcpcpy, wcpncpy,
wcstol, wcstoll, wcstoul, wcstoull, wcsxfrm, cfmakeraw, fgetwc, fgetws,
fputwc, fputws, fwide, getwc, getwchar, putwc, putwchar, ungetwc.
Security related changes:
- Getting a domain user's groups is hopefully more bulletproof now.
- 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
- Cygwin now allows to store and use 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.
- The mkpasswd and mkgroup tools have changed behaviour and a couple of
new options to ease consistent usage in multi-machine or multi-domain
- 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.
- 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. There's also
the new CYGWIN=nodosfilewarning setting to disable that.
- Allow environment of arbitrary size instead of a maximum of 32K.
- 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
- Detect and report a missing DLL on process startup.
- Add /proc/registry32 and /proc/registry64 paths to access 32 bit and
64 bit registry on 64 bit systems.
- 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.
- Align /proc/cpuinfo more closly to Linux content.
- Optimized strstr and memmem implementation.
- Remove backwards compatibility with old signal masks (some *very* old
programs which use signal masks may no longer work correctly).
- Numerous bug fixes.
- Probably a couple of entirely new bugs.
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