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#ifndef _FS_CEPH_AUTH_X_H
#define _FS_CEPH_AUTH_X_H

#include <linux/rbtree.h>

#include <linux/ceph/auth.h>

#include "crypto.h"
#include "auth_x_protocol.h"

/*
 * Handle ticket for a single service.
 */
struct ceph_x_ticket_handler {
	struct rb_node node;
	unsigned int service;

	struct ceph_crypto_key session_key;
	bool have_key;

	u64 secret_id;
	struct ceph_buffer *ticket_blob;

	unsigned long renew_after, expires;
};

#define CEPHX_AU_ENC_BUF_LEN	128  /* big enough for encrypted blob */

struct ceph_x_authorizer {
	struct ceph_authorizer base;
	struct ceph_crypto_key session_key;
	struct ceph_buffer *buf;
	unsigned int service;
	u64 nonce;
	u64 secret_id;
	char enc_buf[CEPHX_AU_ENC_BUF_LEN] __aligned(8);
};

struct ceph_x_info {
	struct ceph_crypto_key secret;

	bool starting;
	u64 server_challenge;

	unsigned int have_keys;
	struct rb_root ticket_handlers;

	struct ceph_x_authorizer auth_authorizer;
};

int ceph_x_init(struct ceph_auth_client *ac);

#endif

ll the protection bits but leave the PTE valid. With the Radix MMU, an attempt at executing from such a PTE will take a fault with bit 35 of SRR1 set "SRR1_ISI_N_OR_G". It is thus incorrect to treat all such faults as errors. We should pass them to handle_mm_fault() for autonuma to deal with. The case of pages that are really not executable is handled by the existing test for VM_EXEC further down. That leaves us with catching the kernel attempts at executing user pages. We can catch that earlier, even before we do find_vma. It is never valid on powerpc for the kernel to take an exec fault to begin with. So fold that test with the existing test for the kernel faulting on kernel addresses to bail out early. Fixes: 1d18ad026844 ("powerpc/mm: Detect instruction fetch denied and report") Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Balbir Singh <bsingharora@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'include/dt-bindings/spmi')