On 10/01/2013 09:00 AM, Miklos Szeredi wrote: > This series adds a new syscall, renameat2(), which is the same as renameat() but > with a flags argument. Internally i_op->reaname2() is also added, which can > later be merged with ->rename() but is kept separately for now, since this would > just blow up this patch without helping review. > > The purpose of extending rename is to add cross-rename, a symmetric variant of > rename, which exchanges the two files. This allows interesting things, which > were not possible before, for example atomically replacing a directory tree with > a symlink, etc... > I would suggest it shouldn't be renameat2() but rather renameat3(), i.e. rename file A -> B, if B exists rename B to C. It may not be desirable to expose the stale B in the same namespace as A, but still want it to be possible to scavenge it. Obviously, A=C is a valid subcase. -hpa -- 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
