John Fraser wrote: > > Hello; > > We are working on an application that needs to grab files put onto an ext3 > filesystem as soon as they are written. We've looked at lsof, and other > tools, and are having troubles finding just the right mechanism to tell when > a file has been completely written and the other process has closed the > file. > > In most cases it will be Samba users putting the files onto the ext3 > filesystem that we need to process immediatitely, and we will also need to > allow NFS users to put files onto the ext3 filesystem. In both cases, we > need low-level knowledge of when the file is written completely so we can > grab the sucker right away. > That actually sounds like a fairly useful feature addition for the directory notification code. include/linux/fcntl.h: #define DN_ACCESS 0x00000001 /* File accessed */ #define DN_MODIFY 0x00000002 /* File modified */ #define DN_CREATE 0x00000004 /* File created */ #define DN_DELETE 0x00000008 /* File removed */ #define DN_RENAME 0x00000010 /* File renamed */ #define DN_ATTRIB 0x00000020 /* File changed attibutes */ It would probably be a simple exercise to add "DN_CLOSE", and then run around and implement it. (That being said, what was wrong with polling `lsof' output for the absence of the file?)
