From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/net/sunrpc/auth_gss/gss_mech_switch.c | 481 +++++++++++++++++++++++++++ 1 file changed, 481 insertions(+) create mode 100644 kernel/net/sunrpc/auth_gss/gss_mech_switch.c (limited to 'kernel/net/sunrpc/auth_gss/gss_mech_switch.c') diff --git a/kernel/net/sunrpc/auth_gss/gss_mech_switch.c b/kernel/net/sunrpc/auth_gss/gss_mech_switch.c new file mode 100644 index 000000000..7063d856a --- /dev/null +++ b/kernel/net/sunrpc/auth_gss/gss_mech_switch.c @@ -0,0 +1,481 @@ +/* + * linux/net/sunrpc/gss_mech_switch.c + * + * Copyright (c) 2001 The Regents of the University of Michigan. + * All rights reserved. + * + * J. Bruce Fields + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the University nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#if IS_ENABLED(CONFIG_SUNRPC_DEBUG) +# define RPCDBG_FACILITY RPCDBG_AUTH +#endif + +static LIST_HEAD(registered_mechs); +static DEFINE_SPINLOCK(registered_mechs_lock); + +static void +gss_mech_free(struct gss_api_mech *gm) +{ + struct pf_desc *pf; + int i; + + for (i = 0; i < gm->gm_pf_num; i++) { + pf = &gm->gm_pfs[i]; + kfree(pf->auth_domain_name); + pf->auth_domain_name = NULL; + } +} + +static inline char * +make_auth_domain_name(char *name) +{ + static char *prefix = "gss/"; + char *new; + + new = kmalloc(strlen(name) + strlen(prefix) + 1, GFP_KERNEL); + if (new) { + strcpy(new, prefix); + strcat(new, name); + } + return new; +} + +static int +gss_mech_svc_setup(struct gss_api_mech *gm) +{ + struct pf_desc *pf; + int i, status; + + for (i = 0; i < gm->gm_pf_num; i++) { + pf = &gm->gm_pfs[i]; + pf->auth_domain_name = make_auth_domain_name(pf->name); + status = -ENOMEM; + if (pf->auth_domain_name == NULL) + goto out; + status = svcauth_gss_register_pseudoflavor(pf->pseudoflavor, + pf->auth_domain_name); + if (status) + goto out; + } + return 0; +out: + gss_mech_free(gm); + return status; +} + +/** + * gss_mech_register - register a GSS mechanism + * @gm: GSS mechanism handle + * + * Returns zero if successful, or a negative errno. + */ +int gss_mech_register(struct gss_api_mech *gm) +{ + int status; + + status = gss_mech_svc_setup(gm); + if (status) + return status; + spin_lock(®istered_mechs_lock); + list_add(&gm->gm_list, ®istered_mechs); + spin_unlock(®istered_mechs_lock); + dprintk("RPC: registered gss mechanism %s\n", gm->gm_name); + return 0; +} +EXPORT_SYMBOL_GPL(gss_mech_register); + +/** + * gss_mech_unregister - release a GSS mechanism + * @gm: GSS mechanism handle + * + */ +void gss_mech_unregister(struct gss_api_mech *gm) +{ + spin_lock(®istered_mechs_lock); + list_del(&gm->gm_list); + spin_unlock(®istered_mechs_lock); + dprintk("RPC: unregistered gss mechanism %s\n", gm->gm_name); + gss_mech_free(gm); +} +EXPORT_SYMBOL_GPL(gss_mech_unregister); + +struct gss_api_mech *gss_mech_get(struct gss_api_mech *gm) +{ + __module_get(gm->gm_owner); + return gm; +} +EXPORT_SYMBOL(gss_mech_get); + +static struct gss_api_mech * +_gss_mech_get_by_name(const char *name) +{ + struct gss_api_mech *pos, *gm = NULL; + + spin_lock(®istered_mechs_lock); + list_for_each_entry(pos, ®istered_mechs, gm_list) { + if (0 == strcmp(name, pos->gm_name)) { + if (try_module_get(pos->gm_owner)) + gm = pos; + break; + } + } + spin_unlock(®istered_mechs_lock); + return gm; + +} + +struct gss_api_mech * gss_mech_get_by_name(const char *name) +{ + struct gss_api_mech *gm = NULL; + + gm = _gss_mech_get_by_name(name); + if (!gm) { + request_module("rpc-auth-gss-%s", name); + gm = _gss_mech_get_by_name(name); + } + return gm; +} + +struct gss_api_mech *gss_mech_get_by_OID(struct rpcsec_gss_oid *obj) +{ + struct gss_api_mech *pos, *gm = NULL; + char buf[32]; + + if (sprint_oid(obj->data, obj->len, buf, sizeof(buf)) < 0) + return NULL; + dprintk("RPC: %s(%s)\n", __func__, buf); + request_module("rpc-auth-gss-%s", buf); + + spin_lock(®istered_mechs_lock); + list_for_each_entry(pos, ®istered_mechs, gm_list) { + if (obj->len == pos->gm_oid.len) { + if (0 == memcmp(obj->data, pos->gm_oid.data, obj->len)) { + if (try_module_get(pos->gm_owner)) + gm = pos; + break; + } + } + } + spin_unlock(®istered_mechs_lock); + return gm; +} + +static inline int +mech_supports_pseudoflavor(struct gss_api_mech *gm, u32 pseudoflavor) +{ + int i; + + for (i = 0; i < gm->gm_pf_num; i++) { + if (gm->gm_pfs[i].pseudoflavor == pseudoflavor) + return 1; + } + return 0; +} + +static struct gss_api_mech *_gss_mech_get_by_pseudoflavor(u32 pseudoflavor) +{ + struct gss_api_mech *gm = NULL, *pos; + + spin_lock(®istered_mechs_lock); + list_for_each_entry(pos, ®istered_mechs, gm_list) { + if (!mech_supports_pseudoflavor(pos, pseudoflavor)) + continue; + if (try_module_get(pos->gm_owner)) + gm = pos; + break; + } + spin_unlock(®istered_mechs_lock); + return gm; +} + +struct gss_api_mech * +gss_mech_get_by_pseudoflavor(u32 pseudoflavor) +{ + struct gss_api_mech *gm; + + gm = _gss_mech_get_by_pseudoflavor(pseudoflavor); + + if (!gm) { + request_module("rpc-auth-gss-%u", pseudoflavor); + gm = _gss_mech_get_by_pseudoflavor(pseudoflavor); + } + return gm; +} + +/** + * gss_mech_list_pseudoflavors - Discover registered GSS pseudoflavors + * @array: array to fill in + * @size: size of "array" + * + * Returns the number of array items filled in, or a negative errno. + * + * The returned array is not sorted by any policy. Callers should not + * rely on the order of the items in the returned array. + */ +int gss_mech_list_pseudoflavors(rpc_authflavor_t *array_ptr, int size) +{ + struct gss_api_mech *pos = NULL; + int j, i = 0; + + spin_lock(®istered_mechs_lock); + list_for_each_entry(pos, ®istered_mechs, gm_list) { + for (j = 0; j < pos->gm_pf_num; j++) { + if (i >= size) { + spin_unlock(®istered_mechs_lock); + return -ENOMEM; + } + array_ptr[i++] = pos->gm_pfs[j].pseudoflavor; + } + } + spin_unlock(®istered_mechs_lock); + return i; +} + +/** + * gss_svc_to_pseudoflavor - map a GSS service number to a pseudoflavor + * @gm: GSS mechanism handle + * @qop: GSS quality-of-protection value + * @service: GSS service value + * + * Returns a matching security flavor, or RPC_AUTH_MAXFLAVOR if none is found. + */ +rpc_authflavor_t gss_svc_to_pseudoflavor(struct gss_api_mech *gm, u32 qop, + u32 service) +{ + int i; + + for (i = 0; i < gm->gm_pf_num; i++) { + if (gm->gm_pfs[i].qop == qop && + gm->gm_pfs[i].service == service) { + return gm->gm_pfs[i].pseudoflavor; + } + } + return RPC_AUTH_MAXFLAVOR; +} + +/** + * gss_mech_info2flavor - look up a pseudoflavor given a GSS tuple + * @info: a GSS mech OID, quality of protection, and service value + * + * Returns a matching pseudoflavor, or RPC_AUTH_MAXFLAVOR if the tuple is + * not supported. + */ +rpc_authflavor_t gss_mech_info2flavor(struct rpcsec_gss_info *info) +{ + rpc_authflavor_t pseudoflavor; + struct gss_api_mech *gm; + + gm = gss_mech_get_by_OID(&info->oid); + if (gm == NULL) + return RPC_AUTH_MAXFLAVOR; + + pseudoflavor = gss_svc_to_pseudoflavor(gm, info->qop, info->service); + + gss_mech_put(gm); + return pseudoflavor; +} + +/** + * gss_mech_flavor2info - look up a GSS tuple for a given pseudoflavor + * @pseudoflavor: GSS pseudoflavor to match + * @info: rpcsec_gss_info structure to fill in + * + * Returns zero and fills in "info" if pseudoflavor matches a + * supported mechanism. Otherwise a negative errno is returned. + */ +int gss_mech_flavor2info(rpc_authflavor_t pseudoflavor, + struct rpcsec_gss_info *info) +{ + struct gss_api_mech *gm; + int i; + + gm = gss_mech_get_by_pseudoflavor(pseudoflavor); + if (gm == NULL) + return -ENOENT; + + for (i = 0; i < gm->gm_pf_num; i++) { + if (gm->gm_pfs[i].pseudoflavor == pseudoflavor) { + memcpy(info->oid.data, gm->gm_oid.data, gm->gm_oid.len); + info->oid.len = gm->gm_oid.len; + info->qop = gm->gm_pfs[i].qop; + info->service = gm->gm_pfs[i].service; + gss_mech_put(gm); + return 0; + } + } + + gss_mech_put(gm); + return -ENOENT; +} + +u32 +gss_pseudoflavor_to_service(struct gss_api_mech *gm, u32 pseudoflavor) +{ + int i; + + for (i = 0; i < gm->gm_pf_num; i++) { + if (gm->gm_pfs[i].pseudoflavor == pseudoflavor) + return gm->gm_pfs[i].service; + } + return 0; +} +EXPORT_SYMBOL(gss_pseudoflavor_to_service); + +char * +gss_service_to_auth_domain_name(struct gss_api_mech *gm, u32 service) +{ + int i; + + for (i = 0; i < gm->gm_pf_num; i++) { + if (gm->gm_pfs[i].service == service) + return gm->gm_pfs[i].auth_domain_name; + } + return NULL; +} + +void +gss_mech_put(struct gss_api_mech * gm) +{ + if (gm) + module_put(gm->gm_owner); +} +EXPORT_SYMBOL(gss_mech_put); + +/* The mech could probably be determined from the token instead, but it's just + * as easy for now to pass it in. */ +int +gss_import_sec_context(const void *input_token, size_t bufsize, + struct gss_api_mech *mech, + struct gss_ctx **ctx_id, + time_t *endtime, + gfp_t gfp_mask) +{ + if (!(*ctx_id = kzalloc(sizeof(**ctx_id), gfp_mask))) + return -ENOMEM; + (*ctx_id)->mech_type = gss_mech_get(mech); + + return mech->gm_ops->gss_import_sec_context(input_token, bufsize, + *ctx_id, endtime, gfp_mask); +} + +/* gss_get_mic: compute a mic over message and return mic_token. */ + +u32 +gss_get_mic(struct gss_ctx *context_handle, + struct xdr_buf *message, + struct xdr_netobj *mic_token) +{ + return context_handle->mech_type->gm_ops + ->gss_get_mic(context_handle, + message, + mic_token); +} + +/* gss_verify_mic: check whether the provided mic_token verifies message. */ + +u32 +gss_verify_mic(struct gss_ctx *context_handle, + struct xdr_buf *message, + struct xdr_netobj *mic_token) +{ + return context_handle->mech_type->gm_ops + ->gss_verify_mic(context_handle, + message, + mic_token); +} + +/* + * This function is called from both the client and server code. + * Each makes guarantees about how much "slack" space is available + * for the underlying function in "buf"'s head and tail while + * performing the wrap. + * + * The client and server code allocate RPC_MAX_AUTH_SIZE extra + * space in both the head and tail which is available for use by + * the wrap function. + * + * Underlying functions should verify they do not use more than + * RPC_MAX_AUTH_SIZE of extra space in either the head or tail + * when performing the wrap. + */ +u32 +gss_wrap(struct gss_ctx *ctx_id, + int offset, + struct xdr_buf *buf, + struct page **inpages) +{ + return ctx_id->mech_type->gm_ops + ->gss_wrap(ctx_id, offset, buf, inpages); +} + +u32 +gss_unwrap(struct gss_ctx *ctx_id, + int offset, + struct xdr_buf *buf) +{ + return ctx_id->mech_type->gm_ops + ->gss_unwrap(ctx_id, offset, buf); +} + + +/* gss_delete_sec_context: free all resources associated with context_handle. + * Note this differs from the RFC 2744-specified prototype in that we don't + * bother returning an output token, since it would never be used anyway. */ + +u32 +gss_delete_sec_context(struct gss_ctx **context_handle) +{ + dprintk("RPC: gss_delete_sec_context deleting %p\n", + *context_handle); + + if (!*context_handle) + return GSS_S_NO_CONTEXT; + if ((*context_handle)->internal_ctx_id) + (*context_handle)->mech_type->gm_ops + ->gss_delete_sec_context((*context_handle) + ->internal_ctx_id); + gss_mech_put((*context_handle)->mech_type); + kfree(*context_handle); + *context_handle=NULL; + return GSS_S_COMPLETE; +} -- cgit 1.2.3-korg