[ANNOUNCEMENT] Cygwin 3.0.0-1
Brian Inglis
Brian.Inglis@SystematicSw.ab.ca
Mon Feb 18 05:18:00 GMT 2019
On 2019-02-17 09:42, Corinna Vinschen wrote:
> On Feb 17 18:28, Andrey Repin wrote:
>>> I uploaded a new Cygwin release 3.0.0-1.
>> The redirection issue I mentioned for 3.0-0.9 is still happens.
>> And I see the STC did not made it to the list.
>> Hamsters were hungry, I guess... Let's try without attachments.
>> TYPE "%SystemRoot%\win.ini" | diff -u "%SystemRoot%\win.ini" -
> I'm baffled. diff calls fstat on descriptor 0. fstat returns
> with st_mode set to S_IFIFO | S_IRUSR, so it *knows* descriptor
> 0 is a pipe and thus not seekable. Nevertheless it calls lseek
> just a bit later to seek back to the beginning of input.
Does not happen under mintty, only cmd, does the below help?
> ver
Microsoft Windows [Version 10.0.17763.292]
> uname -srvmo
CYGWIN_NT-10.0 3.0.0(0.336/5/3) 2019-02-16 13:21 x86_64 Cygwin
> diff --version
diff (GNU diffutils) 3.5
Packaged by Cygwin (3.5-2)
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Written by Paul Eggert, Mike Haertel, David Hayes,
Richard Stallman, and Len Tower.
> cat /var/log/setup.log | strace -o diff.strace diff -u /var/log/setup.log -
diff: -: Illegal seek
cat: write error: No space left on device
> less diff.strace
...
41 63902 [main] diff 43744 _cygwin_istext_for_stdio: fd 3: opened as binary
359 64261 [main] diff 43744 setmode_helper: improbable, but 0 != 3
347 64608 [main] diff 43744 setmode_helper: improbable, but 1 != 3
349 64957 [main] diff 43744 setmode_helper: improbable, but 2 != 3
47 65004 [main] diff 43744 read: read(3, 0x600063390, 65536) blocking
93 65097 [main] diff 43744 fhandler_base::read: returning 65536, binary mode
43 65140 [main] diff 43744 read: 65536 = read(3, 0x600063390, 65536)
90 65230 [main] diff 43744 fhandler_base::set_flags: flags 0x10000,
supplied_bin 0x0
39 65269 [main] diff 43744 fhandler_base::set_flags: O_TEXT/O_BINARY set in
flags 0x10000
38 65307 [main] diff 43744 fhandler_base::set_flags: filemode set to binary
38 65345 [main] diff 43744 _setmode: (0<>, 0x10000) returning text
39 65384 [main] diff 43744 _cygwin_istext_for_stdio: fd 0: opened as binary
162 65546 [main] diff 43744 setmode_helper: file was binary now binary
286 65832 [main] diff 43744 setmode_helper: improbable, but 1 != 0
287 66119 [main] diff 43744 setmode_helper: improbable, but 2 != 0
^^^
*No strace of _fwalk calling setmode_helper for comparison with 0, and continues
to compare against 1 and 2? Should _fwalk return if !fp->flags?*
39 66158 [main] diff 43744 read: read(0, 0x600073490, 65536) blocking
109 66267 [main] diff 43744 fhandler_base::read: returning 65536, binary mode
47 66314 [main] diff 43744 read: 65536 = read(0, 0x600073490, 65536)
43 66357 [main] diff 43744 fhandler_pipe::lseek: (-65536, 1)
40 66397 [main] diff 43744 __set_errno: virtual off_t
fhandler_pipe::lseek(off_t, int):165 setting errno 29
39 66436 [main] diff 43744 lseek64: -1 = lseek(0, -65536, 1), errno 29
...
--
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada
This email may be disturbing to some readers as it contains
too much technical detail. Reader discretion is advised.
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