Add support for disable security to libndctl and also command line option of "disable-security" for ndctl. This provides a way to disable security on the nvdimm. ndctl does not handle the actual processing of the passphrase. It only starts the request.
Signed-off-by: Dave Jiang <[email protected]> --- Documentation/ndctl/Makefile.am | 3 ++- Documentation/ndctl/ndctl-disable-security.txt | 21 +++++++++++++++++++++ builtin.h | 1 + ndctl/dimm.c | 22 ++++++++++++++++++++++ ndctl/lib/dimm.c | 5 +++++ ndctl/lib/libndctl.sym | 1 + ndctl/libndctl.h | 1 + ndctl/ndctl.c | 1 + 8 files changed, 54 insertions(+), 1 deletion(-) create mode 100644 Documentation/ndctl/ndctl-disable-security.txt diff --git a/Documentation/ndctl/Makefile.am b/Documentation/ndctl/Makefile.am index 2c064c3a..faeb0d9b 100644 --- a/Documentation/ndctl/Makefile.am +++ b/Documentation/ndctl/Makefile.am @@ -48,7 +48,8 @@ man1_MANS = \ ndctl-update-firmware.1 \ ndctl-list.1 \ ndctl-monitor.1 \ - ndctl-update-security.1 + ndctl-update-security.1 \ + ndctl-disable-security.1 CLEANFILES = $(man1_MANS) diff --git a/Documentation/ndctl/ndctl-disable-security.txt b/Documentation/ndctl/ndctl-disable-security.txt new file mode 100644 index 00000000..651f8d03 --- /dev/null +++ b/Documentation/ndctl/ndctl-disable-security.txt @@ -0,0 +1,21 @@ +// SPDX-License-Identifier: GPL-2.0 + +ndctl-disable-security(1) +======================== + +NAME +---- +ndctl-disable-security - enabling or disable security for an NVDIMM + +SYNOPSIS +-------- +[verse] +'ndctl disable-security' <dimm> + +DESCRIPTION +----------- +Provide a generic interface for disabling security for NVDIMM. The use of this +depends on support from the underlying libndctl, kernel, as well as the +platform itself. + +include::../copyright.txt[] diff --git a/builtin.h b/builtin.h index 37404c79..39e4e38d 100644 --- a/builtin.h +++ b/builtin.h @@ -49,4 +49,5 @@ int cmd_bat(int argc, const char **argv, void *ctx); int cmd_update_firmware(int argc, const char **argv, void *ctx); int cmd_inject_smart(int argc, const char **argv, void *ctx); int cmd_key_update(int argc, const char **argv, void *ctx); +int cmd_disable_security(int argc, const char **argv, void *ctx); #endif /* _NDCTL_BUILTIN_H_ */ diff --git a/ndctl/dimm.c b/ndctl/dimm.c index 48d366c6..96733ff6 100644 --- a/ndctl/dimm.c +++ b/ndctl/dimm.c @@ -879,6 +879,18 @@ static int action_key(struct ndctl_dimm *dimm, return rc; } +static int action_security_disable(struct ndctl_dimm *dimm, + struct action_context *actx) +{ + int rc; + + rc = ndctl_dimm_disable_security(dimm); + if (rc < 0) + error("Failed to disable 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) { @@ -1251,3 +1263,13 @@ int cmd_key_update(int argc, const char **argv, void *ctx) count > 1 ? "s" : ""); return count >= 0 ? 0 : EXIT_FAILURE; } + +int cmd_disable_security(int argc, const char **argv, void *ctx) +{ + int count = dimm_action(argc, argv, ctx, action_security_disable, base_options, + "ndctl disable-security <nmem0> [<nmem1>..<nmemN>] [<options>]"); + + fprintf(stderr, "security disabled %d nmem%s.\n", count >= 0 ? count : 0, + count > 1 ? "s" : ""); + return count >= 0 ? 0 : EXIT_FAILURE; +} diff --git a/ndctl/lib/dimm.c b/ndctl/lib/dimm.c index 57bbf01a..53e99906 100644 --- a/ndctl/lib/dimm.c +++ b/ndctl/lib/dimm.c @@ -619,3 +619,8 @@ NDCTL_EXPORT int ndctl_dimm_set_change_key(struct ndctl_dimm *dimm, sprintf(buf, "update:%d:%d\n", ckey, nkey); return ndctl_dimm_write_security(dimm, buf); } + +NDCTL_EXPORT int ndctl_dimm_disable_security(struct ndctl_dimm *dimm) +{ + return ndctl_dimm_write_security(dimm, "disable"); +} diff --git a/ndctl/lib/libndctl.sym b/ndctl/lib/libndctl.sym index d4764450..136f4e04 100644 --- a/ndctl/lib/libndctl.sym +++ b/ndctl/lib/libndctl.sym @@ -385,4 +385,5 @@ global: ndctl_dimm_add_key; ndctl_dimm_get_current_key; ndctl_dimm_set_change_key; + ndctl_dimm_disable_security; } LIBNDCTL_17; diff --git a/ndctl/libndctl.h b/ndctl/libndctl.h index f845b11b..a914cfc3 100644 --- a/ndctl/libndctl.h +++ b/ndctl/libndctl.h @@ -681,6 +681,7 @@ int ndctl_dimm_get_key_payload(struct ndctl_dimm *dimm, char *pass, int *psize); int ndctl_dimm_add_key(struct ndctl_dimm *dimm, const char *passphrase, int pass_size, key_serial_t *key); int ndctl_dimm_get_current_key(struct ndctl_dimm *dimm, key_serial_t *key); +int ndctl_dimm_disable_security(struct ndctl_dimm *dimm); #ifdef __cplusplus } /* extern "C" */ diff --git a/ndctl/ndctl.c b/ndctl/ndctl.c index c7096dfd..2dab02d2 100644 --- a/ndctl/ndctl.c +++ b/ndctl/ndctl.c @@ -89,6 +89,7 @@ static struct cmd_struct commands[] = { { "wait-scrub", cmd_wait_scrub }, { "start-scrub", cmd_start_scrub }, { "update-security", cmd_key_update }, + { "disable-security", cmd_disable_security }, { "list", cmd_list }, { "monitor", cmd_monitor}, { "help", cmd_help }, _______________________________________________ Linux-nvdimm mailing list [email protected] https://lists.01.org/mailman/listinfo/linux-nvdimm
