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-rw-r--r--include/linux/sunrpc/gss_api.h141
1 files changed, 141 insertions, 0 deletions
diff --git a/include/linux/sunrpc/gss_api.h b/include/linux/sunrpc/gss_api.h
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+++ b/include/linux/sunrpc/gss_api.h
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+/*
+ * linux/include/linux/sunrpc/gss_api.h
+ *
+ * Somewhat simplified version of the gss api.
+ *
+ * Dug Song <dugsong@monkey.org>
+ * Andy Adamson <andros@umich.edu>
+ * Bruce Fields <bfields@umich.edu>
+ * Copyright (c) 2000 The Regents of the University of Michigan
+ */
+
+#ifndef _LINUX_SUNRPC_GSS_API_H
+#define _LINUX_SUNRPC_GSS_API_H
+
+#ifdef __KERNEL__
+#include <linux/sunrpc/xdr.h>
+#include <linux/uio.h>
+
+/* The mechanism-independent gss-api context: */
+struct gss_ctx {
+ struct gss_api_mech *mech_type;
+ void *internal_ctx_id;
+};
+
+#define GSS_C_NO_BUFFER ((struct xdr_netobj) 0)
+#define GSS_C_NO_CONTEXT ((struct gss_ctx *) 0)
+#define GSS_C_NULL_OID ((struct xdr_netobj) 0)
+
+/*XXX arbitrary length - is this set somewhere? */
+#define GSS_OID_MAX_LEN 32
+
+/* gss-api prototypes; note that these are somewhat simplified versions of
+ * the prototypes specified in RFC 2744. */
+int gss_import_sec_context(
+ const void* input_token,
+ size_t bufsize,
+ struct gss_api_mech *mech,
+ struct gss_ctx **ctx_id,
+ gfp_t gfp_mask);
+u32 gss_get_mic(
+ struct gss_ctx *ctx_id,
+ struct xdr_buf *message,
+ struct xdr_netobj *mic_token);
+u32 gss_verify_mic(
+ struct gss_ctx *ctx_id,
+ struct xdr_buf *message,
+ struct xdr_netobj *mic_token);
+u32 gss_wrap(
+ struct gss_ctx *ctx_id,
+ int offset,
+ struct xdr_buf *outbuf,
+ struct page **inpages);
+u32 gss_unwrap(
+ struct gss_ctx *ctx_id,
+ int offset,
+ struct xdr_buf *inbuf);
+u32 gss_delete_sec_context(
+ struct gss_ctx **ctx_id);
+
+u32 gss_svc_to_pseudoflavor(struct gss_api_mech *, u32 service);
+u32 gss_pseudoflavor_to_service(struct gss_api_mech *, u32 pseudoflavor);
+char *gss_service_to_auth_domain_name(struct gss_api_mech *, u32 service);
+
+struct pf_desc {
+ u32 pseudoflavor;
+ u32 service;
+ char *name;
+ char *auth_domain_name;
+};
+
+/* Different mechanisms (e.g., krb5 or spkm3) may implement gss-api, and
+ * mechanisms may be dynamically registered or unregistered by modules. */
+
+/* Each mechanism is described by the following struct: */
+struct gss_api_mech {
+ struct list_head gm_list;
+ struct module *gm_owner;
+ struct xdr_netobj gm_oid;
+ char *gm_name;
+ const struct gss_api_ops *gm_ops;
+ /* pseudoflavors supported by this mechanism: */
+ int gm_pf_num;
+ struct pf_desc * gm_pfs;
+ /* Should the following be a callback operation instead? */
+ const char *gm_upcall_enctypes;
+};
+
+/* and must provide the following operations: */
+struct gss_api_ops {
+ int (*gss_import_sec_context)(
+ const void *input_token,
+ size_t bufsize,
+ struct gss_ctx *ctx_id,
+ gfp_t gfp_mask);
+ u32 (*gss_get_mic)(
+ struct gss_ctx *ctx_id,
+ struct xdr_buf *message,
+ struct xdr_netobj *mic_token);
+ u32 (*gss_verify_mic)(
+ struct gss_ctx *ctx_id,
+ struct xdr_buf *message,
+ struct xdr_netobj *mic_token);
+ u32 (*gss_wrap)(
+ struct gss_ctx *ctx_id,
+ int offset,
+ struct xdr_buf *outbuf,
+ struct page **inpages);
+ u32 (*gss_unwrap)(
+ struct gss_ctx *ctx_id,
+ int offset,
+ struct xdr_buf *buf);
+ void (*gss_delete_sec_context)(
+ void *internal_ctx_id);
+};
+
+int gss_mech_register(struct gss_api_mech *);
+void gss_mech_unregister(struct gss_api_mech *);
+
+/* returns a mechanism descriptor given an OID, and increments the mechanism's
+ * reference count. */
+struct gss_api_mech * gss_mech_get_by_OID(struct xdr_netobj *);
+
+/* Returns a reference to a mechanism, given a name like "krb5" etc. */
+struct gss_api_mech *gss_mech_get_by_name(const char *);
+
+/* Similar, but get by pseudoflavor. */
+struct gss_api_mech *gss_mech_get_by_pseudoflavor(u32);
+
+/* Fill in an array with a list of supported pseudoflavors */
+int gss_mech_list_pseudoflavors(u32 *);
+
+/* Just increments the mechanism's reference count and returns its input: */
+struct gss_api_mech * gss_mech_get(struct gss_api_mech *);
+
+/* For every successful gss_mech_get or gss_mech_get_by_* call there must be a
+ * corresponding call to gss_mech_put. */
+void gss_mech_put(struct gss_api_mech *);
+
+#endif /* __KERNEL__ */
+#endif /* _LINUX_SUNRPC_GSS_API_H */
+