On Tue, Aug 06, 2013 at 12:06:52PM +0530, Saket Sinha wrote: > I have to support pushd and popd from userspace in a filesystem that I have > designed. > > In my filesystem driver, to implement it I have done the following > > for popd - the driver implementation is > https://github.com/disdi/hepunion/blob/master/fs/hepunion/hepunion.h#L386 > #define pop_root() \ > current->fsuid = context->uid; \ > current->fsgid = context->gid; \ > recursive_mutex_unlock(&context->id_lock) What you're seeing there are *not* implementations of the pushd/popd bash commands; these just use chdir, as you can find out by running bash under strace. > > for pushd - the driver implementation is > https://github.com/disdi/hepunion/blob/master/fs/hepunion/hepunion.h#L393 > #define push_root() \ > recursive_mutex_lock(&context->id_lock); \ > context->uid = current->fsuid; \ > context->gid = current->fsgid; \ > current->fsuid = 0; \ > current->fsgid = 0 > > > But this implementation is failing at run time. How is it failing? Thanks, Jonathan Neuschäfer _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
