2014/1/20 Volker Lendecke <Volker.Lendecke@xxxxxxxxx>: > Hi! > > On Fri, Jan 17, 2014 at 02:07:05PM +0400, Pavel Shilovsky wrote: >> If O_DENYDELETE flag is specified and the open succeded, >> any further unlink operation will fail with -ESHAREDENIED >> untill this open is closed. Now this flag is processed by >> VFS and CIFS filesystem. NFS returns -EINVAL for opens >> with this flag. > > This looks really, really good, thanks! > > One question: If Samba wants to open a file for delete > access, there's no corresponding flag in the open > permissions. There can be the case where Samba wants to open > *just* for future unlink, no read or write access required. > Is there a way to achieve this atomically correct? You can try to use O_PATH flag. It doesn't give you a delete access but should be ok because further deleting will be done without file descriptor -- through unlink syscall. -- Best regards, Pavel Shilovsky. -- 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
