@@ -51,7 +51,8 @@ man1_MANS = \
ndctl-install-encrypt-key.1 \
ndctl-setup-passphrase.1 \
ndctl-update-passphrase.1 \
- ndctl-disable-passphrase.1
+ ndctl-disable-passphrase.1 \
+ ndctl-freeze-security.1
CLEANFILES = $(man1_MANS)
new file mode 100644
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: GPL-2.0
+
+ndctl-freeze-security(1)
+========================
+
+NAME
+----
+ndctl-freeze-security - Set the given DIMM(s) to reject future security operations
+
+SYNOPSIS
+--------
+[verse]
+'ndctl freeze-security' <nmem0> [<nmem1>..<nmemN>] [<options>]
+
+DESCRIPTION
+-----------
+Prevent any further security operations on the given DIMMs until the
+next reboot. This is used in scenarios where the administrator has
+taken all expected security actions for the current boot and wants the
+DIMM to enforce / lock the current state.
+
+EXAMPLES
+--------
+
+[verse]
+ndctl list -d nmem0
+[
+ {
+ "dev":"nmem0",
+ "id":"cdab-0a-07e0-ffffffff",
+ "handle":0,
+ "phys_id":0,
+ "security":"unlocked"
+ }
+]
+
+[verse]
+ndctl freeze-security nmem0
+security freezed 1 nmem.
+
+[verse]
+ndctl list -d nmem0
+[
+ {
+ "dev":"nmem0",
+ "id":"cdab-0a-07e0-ffffffff",
+ "handle":0,
+ "phys_id":0,
+ "security":"frozen"
+ }
+]
+
+OPTIONS
+-------
+<dimm>::
+include::xable-dimm-options.txt[]
+
+include::../copyright.txt[]
@@ -36,4 +36,5 @@ int cmd_install_kek(int argc, const char **argv, struct ndctl_ctx *ctx);
int cmd_passphrase_setup(int argc, const char **argv, struct ndctl_ctx *ctx);
int cmd_passphrase_update(int argc, const char **argv, struct ndctl_ctx *ctx);
int cmd_passphrase_remove(int argc, const char **argv, struct ndctl_ctx *ctx);
+int cmd_freeze_security(int argc, const char **argv, struct ndctl_ctx *ctx);
#endif /* _NDCTL_BUILTIN_H_ */
@@ -872,6 +872,24 @@ static int action_passphrase_remove(struct ndctl_dimm *dimm,
return ndctl_dimm_remove_key(dimm);
}
+static int action_security_freeze(struct ndctl_dimm *dimm,
+ struct action_context *actx)
+{
+ int rc;
+
+ if (ndctl_dimm_get_security(dimm) < 0) {
+ error("%s: security operation not supported\n",
+ ndctl_dimm_get_devname(dimm));
+ return -EOPNOTSUPP;
+ }
+
+ rc = ndctl_dimm_freeze_security(dimm);
+ if (rc < 0)
+ error("Failed to freeze security for %s\n",
+ ndctl_dimm_get_devname(dimm));
+ return rc;
+}
+
static int __action_init(struct ndctl_dimm *dimm,
enum ndctl_namespace_version version, int chk_only)
{
@@ -1250,3 +1268,13 @@ int cmd_passphrase_remove(int argc, const char **argv, void *ctx)
count > 1 ? "s" : "");
return count >= 0 ? 0 : EXIT_FAILURE;
}
+
+int cmd_freeze_security(int argc, const char **argv, void *ctx)
+{
+ int count = dimm_action(argc, argv, ctx, action_security_freeze, base_options,
+ "ndctl freeze-security <nmem0> [<nmem1>..<nmemN>] [<options>]");
+
+ fprintf(stderr, "security freezed %d nmem%s.\n", count >= 0 ? count : 0,
+ count > 1 ? "s" : "");
+ return count >= 0 ? 0 : EXIT_FAILURE;
+}
@@ -664,3 +664,8 @@ NDCTL_EXPORT int ndctl_dimm_disable_passphrase(struct ndctl_dimm *dimm,
sprintf(buf, "disable %ld\n", key);
return write_security(dimm, buf);
}
+
+NDCTL_EXPORT int ndctl_dimm_freeze_security(struct ndctl_dimm *dimm)
+{
+ return write_security(dimm, "freeze");
+}
@@ -397,4 +397,5 @@ global:
ndctl_dimm_update_passphrase;
ndctl_dimm_disable_passphrase;
ndctl_dimm_remove_key;
+ ndctl_dimm_freeze_security;
} LIBNDCTL_18;
@@ -704,6 +704,7 @@ const char *ndctl_bus_get_kek_handle(struct ndctl_bus *bus);
int ndctl_dimm_update_passphrase(struct ndctl_dimm *dimm,
long ckey, long nkey);
int ndctl_dimm_disable_passphrase(struct ndctl_dimm *dimm, long key);
+int ndctl_dimm_freeze_security(struct ndctl_dimm *dimm);
enum ndctl_key_type {
ND_USER_KEY,
@@ -91,6 +91,7 @@ static struct cmd_struct commands[] = {
{ "setup-passphrase", { cmd_passphrase_setup } },
{ "update-passphrase", { cmd_passphrase_update } },
{ "remove-passphrase", { cmd_passphrase_remove } },
+ { "freeze-security", { cmd_freeze_security } },
{ "list", { cmd_list } },
{ "monitor", { cmd_monitor } },
{ "install-encrypt-key", { cmd_install_kek } },
Add support for freeze security to libndctl and also command line option of "freeze-security" for ndctl. This will lock the ability to make changes to the NVDIMM security. Signed-off-by: Dave Jiang <dave.jiang@intel.com> --- Documentation/ndctl/Makefile.am | 3 + Documentation/ndctl/ndctl-freeze-security.txt | 58 +++++++++++++++++++++++++ ndctl/builtin.h | 1 ndctl/dimm.c | 28 ++++++++++++ ndctl/lib/dimm.c | 5 ++ ndctl/lib/libndctl.sym | 1 ndctl/libndctl.h | 1 ndctl/ndctl.c | 1 8 files changed, 97 insertions(+), 1 deletion(-) create mode 100644 Documentation/ndctl/ndctl-freeze-security.txt