317 lines
12 KiB
Plaintext
317 lines
12 KiB
Plaintext
<sect1 id="ov-new1.7"><title>What's new and what changed in Cygwin 1.7</title>
|
|
|
|
<sect2 id="ov-new1.7-os"><title>OS related changes</title>
|
|
|
|
<screen>
|
|
- Windows 95, 98 and Me are not supported anymore. The new Cygwin 1.7 DLL
|
|
will not run on any of these systems.
|
|
</screen>
|
|
|
|
</sect2>
|
|
|
|
<sect2 id="ov-new1.7-file"><title>File Access related changes</title>
|
|
|
|
<screen>
|
|
- 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.
|
|
|
|
- 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.
|
|
|
|
- If a filename cannot be represented in the current character set,
|
|
the character will be converted to a sequence Ctrl-N + 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 (codepage). 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, for instance in Cygwin.bat like this:
|
|
|
|
set LC_CTYPE=en_US.UTF-8
|
|
|
|
- PATH_MAX is now 4096. Internally, path names can be as long as the
|
|
underlying OS can handle (32K).
|
|
|
|
- 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been replaced by the per-mount option "acl"/"noacl".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
|
|
substitute.
|
|
|
|
- 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 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 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.
|
|
|
|
- New open(2) flags O_DIRECTORY, O_EXEC and O_SEARCH.
|
|
|
|
- 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.
|
|
|
|
- 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.
|
|
|
|
- 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)
|
|
and chmod(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,
|
|
[fl]setxattr, [fl]removexattr).
|
|
|
|
- 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,
|
|
symlinkat, unlinkat.
|
|
|
|
- Other new APIs: posix_fadvise, posix_fallocate, funopen, fopencookie,
|
|
open_memstream, open_wmemstream, fmemopen, fdopendir, fpurge, mkstemps.
|
|
</screen>
|
|
|
|
</sect2>
|
|
|
|
<sect2 id="ov-new1.7-net"><title>Network related changes</title>
|
|
|
|
<screen>
|
|
- 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).
|
|
|
|
- New send/recv option MSG_DONTWAIT.
|
|
|
|
- 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, gethostbyname2, iruserok_sa,
|
|
rcmd_af, rresvport_af. getifaddrs, freeifaddrs, if_nametoindex,
|
|
if_indextoname, if_nameindex, if_freenameindex.
|
|
|
|
- Add /proc/net/if_inet6.
|
|
</screen>
|
|
|
|
</sect2>
|
|
|
|
<sect2 id="ov-new1.7-device"><title>Device related changes</title>
|
|
|
|
<screen>
|
|
- 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.
|
|
|
|
- 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.
|
|
|
|
- Support up to 64 serial interfaces using /dev/ttyS0 - /dev/ttyS63.
|
|
|
|
- Support up to 128 raw disk drives /dev/sda - /dev/sddx.
|
|
|
|
- New API: cfmakeraw, posix_openpt.
|
|
</screen>
|
|
|
|
</sect2>
|
|
|
|
<sect2 id="ov-new1.7-posix"><title>Other POSIX related changes</title>
|
|
|
|
<screen>
|
|
- 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. UTF-8 is supported as well, as in "en_US.UTF-8".
|
|
|
|
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), "SJIS",
|
|
"GBK", "eucJP", "eucKR", and "Big5". The leading language and territory
|
|
part (en_US, for instance) is not used by Cygwin yet, but is required
|
|
for POSIX compatibility.
|
|
|
|
- Allow multiple concurrent read locks per thread for pthread_rwlock_t.
|
|
|
|
- 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> from here.
|
|
|
|
- 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.
|
|
</screen>
|
|
|
|
</sect2>
|
|
|
|
<sect2 id="ov-new1.7-sec"><title>Security related changes</title>
|
|
|
|
<screen>
|
|
- 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
|
|
http://cygwin.com/ml/cygwin-developers/2006-11/msg00000.html
|
|
|
|
- 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.
|
|
|
|
- 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.
|
|
</screen>
|
|
|
|
</sect2>
|
|
|
|
<sect2 id="ov-new1.7-misc"><title>Miscellaneous</title>
|
|
|
|
<screen>
|
|
- New ldd utility, similar to Linux.
|
|
|
|
- New link libraries libdl.a, libresolve.a, librt.a.
|
|
|
|
- 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. This warning
|
|
may be disabled via the new CYGWIN=nodosfilewarning setting.
|
|
|
|
- The CYGWIN environment variable option "server" has been removed.
|
|
Cygwin automatically uses cygserver if it's available.
|
|
|
|
- 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
|
|
CYGWIN=upcaseenv setting.
|
|
|
|
- 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.
|
|
|
|
- Add /proc/$PID/mounts entries and a symlink /proc/mounts pointing to
|
|
/proc/self/mounts as on Linux.
|
|
|
|
- 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).
|
|
|
|
</screen>
|
|
|
|
</sect2>
|
|
|
|
</sect1>
|
|
|