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First, I would like to mention that I am new on this list and new to cygwin. Also I would like to thank everyone that has contributed to cygwin!
Recently I tried to get my own project AFD (automatic file distribution system http://www.dwd.de/AFD) to work under windows with the help of cygwin. Compiling works without any problems, however trying to start the application I always get the following errors:
72382 [main] init_afd 1788 fhandler_base::fork_fixup: /home/Holger/afd/fifodir/afd_cmd.fifo - Win32 error 6, handle io_handle<0x0> 72797 [main] init_afd 1788 fhandler_base::fork_fixup: /home/Holger/afd/fifodir/afd_resp.fifo - Win32 error 6, handle io_handle<0x0> 72932 [main] init_afd 1788 fhandler_base::fork_fixup: /home/Holger/afd/fifodir/amg_cmd.fifo - Win32 error 6, handle io_handle<0x0> 73151 [main] init_afd 1788 fhandler_base::fork_fixup: /home/Holger/afd/fifodir/fd_cmd.fifo - Win32 error 6, handle io_handle<0x0> 73294 [main] init_afd 1788 fhandler_base::fork_fixup: /home/Holger/afd/fifodir/probe_only.fifo - Win32 error 6, handle io_handle<0x0> 97242 [main] init_afd 988 fhandler_base::fork_fixup: /home/Holger/afd/fifodir/afd_cmd.fifo - Win32 error 6, handle io_handle<0x0> 98646 [main] init_afd 988 fhandler_base::fork_fixup: /home/Holger/afd/fifodir/afd_resp.fifo - Win32 error 6, handle io_handle<0x0> 117644 [main] init_afd 988 fhandler_base::fork_fixup: /home/Holger/afd/fifodir/amg_cmd.fifo - Win32 error 6, handle io_handle<0x0>
I think that I have found the cause for these error messages. When I remove the FD_CLOEXEC flag, that was used to open the fifo's, the message would disapear. However all my process are still stuck somewhere in some win32 libs. Below is some gdb output of two stuck process:
$ ps x PID PPID PGID WINPID TTY UID STIME COMMAND 2172 1 2172 2172 con 1004 04:45:18 /usr/bin/bash 2620 2172 2620 2656 con 1004 04:45:31 /usr/bin/sh 2668 2620 2620 2688 con 1004 04:45:31 /usr/X11R6/bin/xinit 2700 2668 2700 2720 con 1004 04:45:31 /usr/X11R6/bin/XWin 2840 2668 2840 2864 con 1004 04:45:36 /usr/bin/xterm I 2888 2840 2888 2904 0 1004 04:45:37 /usr/bin/bash 3356 2888 3356 3368 0 1004 04:45:44 /usr/bin/rxvt 3392 3356 3392 3412 1 1004 04:45:45 /usr/bin/sh 3760 2888 3760 3772 0 1004 04:45:50 /usr/bin/rxvt 3796 3760 3796 3812 2 1004 04:45:50 /usr/bin/sh 336 1 1620 336 ? 1004 04:47:04 /home/Holger/afd/bin/init_afd 832 336 1620 1920 ? 1004 04:47:04 /home/Holger/afd/bin/system_log 828 336 1620 1792 ? 1004 04:47:04 /home/Holger/afd/bin/receive_log 736 336 1620 296 ? 1004 04:47:04 /home/Holger/afd/bin/transfer_log 1908 336 1620 2120 ? 1004 04:47:04 /home/Holger/afd/bin/trans_db_log 1732 336 1620 308 ? 1004 04:47:04 /home/Holger/afd/bin/archive_watch 1644 336 1620 1224 ? 1004 04:47:04 /home/Holger/afd/bin/input_log 2116 336 1620 2268 ? 1004 04:47:05 /home/Holger/afd/bin/output_log 1956 336 1620 2284 ? 1004 04:47:05 /home/Holger/afd/bin/delete_log 2216 336 1620 2236 ? 1004 04:47:05 /home/Holger/afd/bin/production_log 2396 3796 2396 2440 2 1004 04:48:13 /usr/bin/ps $ $ gdb init_afd 336 GNU gdb 6.5.50.20060706-cvs (cygwin-special) Copyright (C) 2006 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i686-pc-cygwin"... Attaching to program `/home/Holger/afd/bin/init_afd.exe', process 336 Loaded symbols for /cygdrive/c/WINDOWS/system32/ntdll.dll Loaded symbols for /cygdrive/c/WINDOWS/system32/kernel32.dll Loaded symbols for /usr/bin/cygwin1.dll Loaded symbols for /cygdrive/c/WINDOWS/system32/advapi32.dll Loaded symbols for /cygdrive/c/WINDOWS/system32/rpcrt4.dll
[Switching to thread 336.0x970] (gdb) where #0 0x7c911231 in ntdll!DbgUiConnectToDbg () from /cygdrive/c/WINDOWS/system32/ntdll.dll #1 0x7c9607a8 in ntdll!KiIntSystemCall () from /cygdrive/c/WINDOWS/system32/ntdll.dll #2 0x00000005 in ?? () #3 0x00000004 in ?? () #4 0x00000001 in ?? () #5 0x19a6ffd0 in ?? () #6 0x805686c0 in ?? () #7 0xffffffff in ?? () #8 0x7c91ee18 in strchr () from /cygdrive/c/WINDOWS/system32/ntdll.dll #9 0x7c9607c8 in ntdll!KiIntSystemCall () from /cygdrive/c/WINDOWS/system32/ntdll.dll #10 0x00000000 in ?? () (gdb) quit The program is running. Quit anyway (and detach it)? (y or n) y Detaching from program: /home/Holger/afd/bin/init_afd.exe, Pid 336 $ gdb system_log 832 GNU gdb 6.5.50.20060706-cvs (cygwin-special) Copyright (C) 2006 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i686-pc-cygwin"... Attaching to program `/home/Holger/afd/bin/system_log.exe', process 1920 Loaded symbols for /cygdrive/c/WINDOWS/system32/ntdll.dll Loaded symbols for /cygdrive/c/WINDOWS/system32/kernel32.dll Loaded symbols for /usr/bin/cygwin1.dll Loaded symbols for /cygdrive/c/WINDOWS/system32/advapi32.dll Loaded symbols for /cygdrive/c/WINDOWS/system32/rpcrt4.dll
[Switching to thread 1920.0xa14] (gdb) where #0 0x7c911231 in ntdll!DbgUiConnectToDbg () from /cygdrive/c/WINDOWS/system32/ntdll.dll #1 0x7c9607a8 in ntdll!KiIntSystemCall () from /cygdrive/c/WINDOWS/system32/ntdll.dll #2 0x00000005 in ?? () #3 0x00000004 in ?? () #4 0x00000001 in ?? () #5 0x1887ffd0 in ?? () #6 0x804fbaa6 in ?? () #7 0xffffffff in ?? () #8 0x7c91ee18 in strchr () from /cygdrive/c/WINDOWS/system32/ntdll.dll #9 0x7c9607c8 in ntdll!KiIntSystemCall () from /cygdrive/c/WINDOWS/system32/ntdll.dll #10 0x00000000 in ?? () (gdb) quit The program is running. Quit anyway (and detach it)? (y or n) y Detaching from program: /home/Holger/afd/bin/system_log.exe, Pid 1920
Unfortunatly I do not know what is going on here. Can someone please help me locate what I am doing wrong?
My application makes much use of fifo's and reading the archive of this mailing list I found places where it was mentioned that fifo support is not yet complete (unfortunatly I do not have a link). But I do not know if this is still true and if this is my problem.
Additionally I found in the list that opening fifo's O_RDWR is not working under cygwin (this is also not defined in the specs, but most unixes do support it), so I used the workaround to open() the fifo once for reading and another open() for writting (ie. using two filedescriptors for one fifo). Should this work under cygwin?
Attached I have the cygcheck.out file. Please tell me if I forget to mention any information that could be usefull or what I can do to solve this.
Thanks, Holger --
Attachment:
cygcheck.out
Description: Text document
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