On Dec 01, 2006 09:41 -0500, Trond Myklebust wrote: > 'ls --color' and 'find' don't give a toss about most of the arguments > from 'stat()'. They just want to know what kind of filesystem object > they are dealing with. We already provide that information in the > readdir() syscall via the 'd_type' field. That is _almost_ true, except that "ls --color" does a stat anyways to get the file mode (to set the "*" executable type) and the file blocks (with -s) and the size (with -l) and the inode number (with -i). In a clustered filesystem getting the inode number and mode is easily done along with the uid/gid (for many kinds of "find") while getting the file size may be non-trivial. Just to be clear, I have no desire to include any kind of "synchronization" semantics to readdirplus() that is also being discussed in this thread. Just the ability to bundle select stat info along with the readdir information, and to allow stat to not return any unnecessary info (in particular size, blocks, mtime) that may be harder to gather on a clustered filesystem. Cheers, Andreas -- Andreas Dilger Principal Software Engineer Cluster File Systems, Inc. - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
