libsepol: Add support for multiple target OSes
On Wed, 2009-09-16 at 09:58 -0400, Joshua Brindle wrote:
> I'd rather have separate ocontext structs for each system. That way it
> is very easy to understand which ones apply to which system and you
> don't get a crazy out of context ocontext struct.
>
I looked into having separate ocontext structs but that would involve
changing a lot of files making the patch much larger and more intrusive.
> > } u;
> > union {
> > uint32_t sclass; /* security class for genfs */
> > @@ -313,6 +323,17 @@ typedef struct genfs {
> > #define OCON_NODE6 6 /* IPv6 nodes */
> > #define OCON_NUM 7
> >
> > +/* object context array indices for Xen */
> > +#define OCON_ISID 0 /* initial SIDs */
> > +#define OCON_PIRQ 1 /* physical irqs */
> > +#define OCON_IOPORT 2 /* io ports */
> > +#define OCON_IOMEM 3 /* io memory */
> > +#define OCON_DEVICE 4 /* pci devices */
> > +#define OCON_DUMMY1 5 /* reserved */
> > +#define OCON_DUMMY2 6 /* reserved */
> > +#define OCON_NUM 7
> > +
> > +
> >
> Should these be namespaced? What if <random other system> has io port
> objects? You'd have to align them with each other and you have a mess of
> keeping the numbers the same (you already do this with OCON_ISID)
Variables have been namespaced and there is no more overlap with
OCON_ISID.
> Also we are relying on having the same number of OCON's which isn't good
> I don't think. As much as I hate the policydb_compat_info (read: alot)
> why aren't we using that to say how many ocons a xen policy really has?
OCON_NUM is now dynamically read through policydb_compat_info.
> This is messy, why not an ocontext_selinux_free() and
> ocontext_xen_free() (note: I realize the xen_free() one won't do
> anything except freep the ocontext_t)
>
done.
> >
> > len = buf[1];
> > - if (len != strlen(target_str)&&
> > - (!alt_target_str || len != strlen(alt_target_str))) {
> > - ERR(fp->handle, "policydb string length %zu does not match "
> > - "expected length %zu", len, strlen(target_str));
> > + if (len> 32) {
> >
>
> magic number 32?
#defined.
Thanks for your input. Below is the updated patch for libsepol.
----
libsepol/include/sepol/policydb/policydb.h | 28 ++
libsepol/src/expand.c | 85 +++++++-
libsepol/src/policydb.c | 295
+++++++++++++++++++++++------
libsepol/src/policydb_internal.h | 1
libsepol/src/private.h | 4
libsepol/src/write.c | 93 ++++++++-
6 files changed, 443 insertions(+), 63 deletions(-)
Signed-off-by: Joshua Brindle <method@manicmethod.com>
6 files changed