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SUNRPC: Export get_gss_krb5_enctype()

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I plan to add KUnit tests that will need enctype profile
information. Export the enctype profile lookup function.

Tested-by: Scott Mayhew <smayhew@redhat.com>
Reviewed-by: Simo Sorce <simo@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2023-01-15 12:23:40 -05:00
parent eebd8c2d19
commit ddd8c1f975
2 changed files with 17 additions and 19 deletions
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1
net/sunrpc/auth_gss/gss_krb5_internal.h
View file

@ -216,6 +216,7 @@ u32 krb5_etm_decrypt(struct krb5_ctx *kctx, u32 offset, u32 len,
#if IS_ENABLED(CONFIG_KUNIT)
void krb5_nfold(u32 inbits, const u8 *in, u32 outbits, u8 *out);
const struct gss_krb5_enctype *gss_krb5_lookup_enctype(u32 etype);
#endif
#endif /* _NET_SUNRPC_AUTH_GSS_KRB5_INTERNAL_H */

35
net/sunrpc/auth_gss/gss_krb5_mech.c
View file

@ -19,6 +19,7 @@
#include <linux/sunrpc/auth.h>
#include <linux/sunrpc/gss_krb5.h>
#include <linux/sunrpc/xdr.h>
#include <kunit/visibility.h>
#include "auth_gss_internal.h"
#include "gss_krb5_internal.h"
@ -309,28 +310,24 @@ static void gss_krb5_prepare_enctype_priority_list(void)
}
}
static const int num_supported_enctypes =
ARRAY_SIZE(supported_gss_krb5_enctypes);
static int
supported_gss_krb5_enctype(int etype)
/**
* gss_krb5_lookup_enctype - Retrieve profile information for a given enctype
* @etype: ENCTYPE value
*
* Returns a pointer to a gss_krb5_enctype structure, or NULL if no
* matching etype is found.
*/
VISIBLE_IF_KUNIT
const struct gss_krb5_enctype *gss_krb5_lookup_enctype(u32 etype)
{
int i;
for (i = 0; i < num_supported_enctypes; i++)
if (supported_gss_krb5_enctypes[i].etype == etype)
return 1;
return 0;
}
size_t i;
static const struct gss_krb5_enctype *
get_gss_krb5_enctype(int etype)
{
int i;
for (i = 0; i < num_supported_enctypes; i++)
for (i = 0; i < ARRAY_SIZE(supported_gss_krb5_enctypes); i++)
if (supported_gss_krb5_enctypes[i].etype == etype)
return &supported_gss_krb5_enctypes[i];
return NULL;
}
EXPORT_SYMBOL_IF_KUNIT(gss_krb5_lookup_enctype);
static struct crypto_sync_skcipher *
gss_krb5_alloc_cipher_v1(struct krb5_ctx *ctx, struct xdr_netobj *key)
@ -366,7 +363,7 @@ get_key(const void *p, const void *end,
alg = ENCTYPE_DES_CBC_RAW;
break;
}
if (!supported_gss_krb5_enctype(alg)) {
if (!gss_krb5_lookup_enctype(alg)) {
pr_warn("gss_krb5: unsupported enctype: %d\n", alg);
goto out_err_inval;
}
@ -405,7 +402,7 @@ gss_import_v1_context(const void *p, const void *end, struct krb5_ctx *ctx)
/* Old format supports only DES! Any other enctype uses new format */
ctx->enctype = ENCTYPE_DES_CBC_RAW;
ctx->gk5e = get_gss_krb5_enctype(ctx->enctype);
ctx->gk5e = gss_krb5_lookup_enctype(ctx->enctype);
if (ctx->gk5e == NULL) {
p = ERR_PTR(-EINVAL);
goto out_err;
@ -677,7 +674,7 @@ gss_import_v2_context(const void *p, const void *end, struct krb5_ctx *ctx,
/* Map ENCTYPE_DES3_CBC_SHA1 to ENCTYPE_DES3_CBC_RAW */
if (ctx->enctype == ENCTYPE_DES3_CBC_SHA1)
ctx->enctype = ENCTYPE_DES3_CBC_RAW;
ctx->gk5e = get_gss_krb5_enctype(ctx->enctype);
ctx->gk5e = gss_krb5_lookup_enctype(ctx->enctype);
if (ctx->gk5e == NULL) {
dprintk("gss_kerberos_mech: unsupported krb5 enctype %u\n",
ctx->enctype);