[Samba] Re: locks cooperating with a server side process
Chris Green [EMAIL PROTECTED] writes: I'm having a problem where I can gain the lock but the process is still writing to the file. OK, I realized that putting python in might have scared away anyone that knew C enough to help me out on my problem so I wrote a tiny util to look at the fcntl based locks. http://cmg.dok.org/code/lockview.c As I copy the file from NT - Linux 2.4, There are no locks set on the file. However, if I turn strict locking on, posix.c/is_posix_locked will return true as soon as I gain the lock and abort the copy. If just plain locking is on, the file will be deleted as soon as the copy is complete if another process has gained a write lock. Does anyone else use samba as a drop box for a unix process? Is there anyway to make a file be locked upon creation with the copy command? I have a hard time figuring out all the paramters for open_file_shared1 [2004/07/20 13:21:37, 5] smbd/files.c:file_new(123) allocated file structure 5634, fnum = 9730 (2 used) [2004/07/20 13:21:37, 10] smbd/open.c:open_file_shared1(807) open_file_shared: fname = output/Testing/cygwin.tar, share_mode = 11, ofun = 10, mode = 660, oplock request = 3 Thanks, Chris -- Chris Green [EMAIL PROTECTED] Eschew obfuscation. -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Re: locks cooperating with a server side process
I'm having a problem where I can gain the lock but the process is still writing to the file. If your building a 'drop box' so to speak, where a process picks up files after they are copied in, perhaps you want to look into hooking for application into 'fam' http://oss.sgi.com/projects/fam/ man fam: ... fam is a server that tracks changes to the filesystem and relays these changes to interested applications. Applica tions such as fm(1G) and mailbox(1) present an up-to-date view of the filesystem. In the absence of fam, these applications and others like them are forced to poll the filesystem to detect changes. fam is more efficient. Applications can request fam to monitor any files or directories in any filesystem. When fam detects changes to monitored files, it notifies the appropriate applica tion. The FAM API provides a programmatic interface to fam; see fam(3X). fam is informed of filesystem changes as they happen by the kernel through the imon(7M) pseudo device driver. If asked to monitor files on an NFS mounted filesystem, fam tries to use fam on the NFS server to monitor files. If fam cannot contact a remote fam, it polls the files instead. fam also polls special files. ... -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Re: locks cooperating with a server side process
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Chris Green wrote: ... | Does anyone else use samba as a drop box for a unix process? | | Is there anyway to make a file be locked upon creation with the copy | command? I have a hard time figuring out all the paramters for | open_file_shared1 Chris, This kind og question is probably better suited for the samba-technical mailing list. I would repost there. cheers, jerry - -- Hewlett-Packard- http://www.hp.com SAMBA Team -- http://www.samba.org GnuPG Key http://www.plainjoe.org/gpg_public.asc ...a hundred billion castaways looking for a home. --- Sting -BEGIN PGP SIGNATURE- Version: GnuPG v1.2.4 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFA/YEHIR7qMdg1EfYRArGLAJ9cDIX+qpu1jo3MDK8wt4CitjBn8wCePDzn tNaMlQ4irMheC+EwD8vUAa8= =IOzG -END PGP SIGNATURE- -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
[Samba] Re: locks cooperating with a server side process
Adam Tauno WIlliams [EMAIL PROTECTED] writes: If your building a 'drop box' so to speak, where a process picks up files after they are copied in, perhaps you want to look into hooking for application into 'fam' http://oss.sgi.com/projects/fam/ Thanks for the pointer. My problem isn't picking up the file when it's copied in, but picking it up when it's complete. Looking at the imon ( and linux fcntl(2) ), there doesn't seem to be a way to say let me know I'm the only person using this file short of mandatory locking. The work around for the users in my case is to copy the file, and then rename but I'd really like it to be a one step operation. Cheers, Chris -- Chris Green [EMAIL PROTECTED] To err is human, to moo bovine. -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
[Samba] Re: locks cooperating with a server side process
Gerald (Jerry) Carter [EMAIL PROTECTED] writes: This kind og question is probably better suited for the samba-technical mailing list. I would repost there. Ah thanks a bunch, Chris -- Chris Green [EMAIL PROTECTED] Chicken's thinkin' -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
