On Thu, 26 Jan 2006, Fawad Lateef wrote: > On 1/26/06, Hsieh Steve <stevecfhsieh@xxxxxxxxx> wrote: > > > > 2006/1/25, Thomas Petazzoni <thomas.petazzoni@xxxxxxxx>: > > > > > > Do not try to access a file from kernel space. > > > > Could u explan "Dont try to access files in kernel space?" > > it this any drawback?? > > > > > > AFAIK accessing files from the kernel is not the good approach as it > can open security issues/holes with-in the kernel, hence the better > approach (if really wants to perform file-io) is to use some interface > like sysfs/netlink sockets for sending data to user space and then > performing file io from user space ! There's a nice paper written by Arjan van de Ven titled "How to NOT write kernel driver" [1] that has two sections about accessing files from kernel space. Look at sections 7 and 8.2 for the reasons why this is not good. - Srdjan Todorovic [1] http://people.redhat.com/arjanv/olspaper.pdf -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
