On Sun, 14 Jul 2013 01:05:31 +0530, Saket Sinha said: > This function long mkdir(......) has most probably imported sytem call > sys_mkdir since no other instance of mkdir is there in the kernel source > tree. > http://lxr.linux.no/linux+v2.6.18/include/linux/syscalls.h#L389 > > Please somebody explain this. A bigger question is why a kernel module is trying to do a mkdir in the first place. Note that procfs and sysfs provide other APIs for modules to create subdirectories in those pseudo filesystems. I see it looks like yet another attempt to make a "union" filesystem - you almost certainly want to examine the other attempts at doing such a thing, as there's a lot of issues with doing it well. In particular, doing whiteouts and other operations will require more support from the VFS layer. Just doing a mkdir() call behind the VFS's back is almost certainly setting yourself up for trouble (most likely on either locking or object lifetime issues).
Attachment:
pgp4JfYGqZIZP.pgp
Description: PGP signature
_______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
