From: Andrew Donnellan <ajd@linux.ibm.com> To: linuxppc-dev@lists.ozlabs.org, linux-integrity@vger.kernel.org Cc: gregkh@linuxfoundation.org, gcwilson@linux.ibm.com, linux-kernel@vger.kernel.org, nayna@linux.ibm.com, ruscur@russell.cc, zohar@linux.ibm.com, mpe@ellerman.id.au, gjoyce@linux.ibm.com, sudhakar@linux.ibm.com, bgray@linux.ibm.com, erichte@linux.ibm.com Subject: [PATCH v3 24/24] integrity/powerpc: Support loading keys from pseries secvar Date: Wed, 18 Jan 2023 17:10:49 +1100 [thread overview] Message-ID: <20230118061049.1006141-25-ajd@linux.ibm.com> (raw) In-Reply-To: <20230118061049.1006141-1-ajd@linux.ibm.com> From: Russell Currey <ruscur@russell.cc> The secvar object format is only in the device tree under powernv. We now have an API call to retrieve it in a generic way, so we should use that instead of having to handle the DT here. Add support for pseries secvar, with the "ibm,plpks-sb-v1" format. The object format is expected to be the same, so there shouldn't be any functional differences between objects retrieved from powernv and pseries. Signed-off-by: Russell Currey <ruscur@russell.cc> Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com> --- v3: New patch --- .../integrity/platform_certs/load_powerpc.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/security/integrity/platform_certs/load_powerpc.c b/security/integrity/platform_certs/load_powerpc.c index dee51606d5f4..8fa899616d92 100644 --- a/security/integrity/platform_certs/load_powerpc.c +++ b/security/integrity/platform_certs/load_powerpc.c @@ -10,7 +10,6 @@ #include <linux/cred.h> #include <linux/err.h> #include <linux/slab.h> -#include <linux/of.h> #include <asm/secure_boot.h> #include <asm/secvar.h> #include "keyring_handler.h" @@ -59,16 +58,22 @@ static int __init load_powerpc_certs(void) void *db = NULL, *dbx = NULL; u64 dbsize = 0, dbxsize = 0; int rc = 0; - struct device_node *node; + ssize_t len; + char buf[SECVAR_MAX_FORMAT_LEN]; if (!secvar_ops) return -ENODEV; - /* The following only applies for the edk2-compat backend. */ - node = of_find_compatible_node(NULL, NULL, "ibm,edk2-compat-v1"); - if (!node) + len = secvar_ops->format(buf); + if (len <= 0) return -ENODEV; + // Check for known secure boot implementations from OPAL or PLPKS + if (strcmp("ibm,edk2-compat-v1", buf) && strcmp("ibm,plpks-sb-v1", buf)) { + pr_err("Unsupported secvar implementation \"%s\", not loading certs\n", buf); + return -ENODEV; + } + /* * Get db, and dbx. They might not exist, so it isn't an error if we * can't get them. @@ -103,8 +108,6 @@ static int __init load_powerpc_certs(void) kfree(dbx); } - of_node_put(node); - return rc; } late_initcall(load_powerpc_certs); -- 2.39.0
WARNING: multiple messages have this Message-ID (diff)
From: Andrew Donnellan <ajd@linux.ibm.com> To: linuxppc-dev@lists.ozlabs.org, linux-integrity@vger.kernel.org Cc: sudhakar@linux.ibm.com, bgray@linux.ibm.com, erichte@linux.ibm.com, gregkh@linuxfoundation.org, nayna@linux.ibm.com, linux-kernel@vger.kernel.org, zohar@linux.ibm.com, gjoyce@linux.ibm.com, gcwilson@linux.ibm.com Subject: [PATCH v3 24/24] integrity/powerpc: Support loading keys from pseries secvar Date: Wed, 18 Jan 2023 17:10:49 +1100 [thread overview] Message-ID: <20230118061049.1006141-25-ajd@linux.ibm.com> (raw) In-Reply-To: <20230118061049.1006141-1-ajd@linux.ibm.com> From: Russell Currey <ruscur@russell.cc> The secvar object format is only in the device tree under powernv. We now have an API call to retrieve it in a generic way, so we should use that instead of having to handle the DT here. Add support for pseries secvar, with the "ibm,plpks-sb-v1" format. The object format is expected to be the same, so there shouldn't be any functional differences between objects retrieved from powernv and pseries. Signed-off-by: Russell Currey <ruscur@russell.cc> Signed-off-by: Andrew Donnellan <ajd@linux.ibm.com> --- v3: New patch --- .../integrity/platform_certs/load_powerpc.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/security/integrity/platform_certs/load_powerpc.c b/security/integrity/platform_certs/load_powerpc.c index dee51606d5f4..8fa899616d92 100644 --- a/security/integrity/platform_certs/load_powerpc.c +++ b/security/integrity/platform_certs/load_powerpc.c @@ -10,7 +10,6 @@ #include <linux/cred.h> #include <linux/err.h> #include <linux/slab.h> -#include <linux/of.h> #include <asm/secure_boot.h> #include <asm/secvar.h> #include "keyring_handler.h" @@ -59,16 +58,22 @@ static int __init load_powerpc_certs(void) void *db = NULL, *dbx = NULL; u64 dbsize = 0, dbxsize = 0; int rc = 0; - struct device_node *node; + ssize_t len; + char buf[SECVAR_MAX_FORMAT_LEN]; if (!secvar_ops) return -ENODEV; - /* The following only applies for the edk2-compat backend. */ - node = of_find_compatible_node(NULL, NULL, "ibm,edk2-compat-v1"); - if (!node) + len = secvar_ops->format(buf); + if (len <= 0) return -ENODEV; + // Check for known secure boot implementations from OPAL or PLPKS + if (strcmp("ibm,edk2-compat-v1", buf) && strcmp("ibm,plpks-sb-v1", buf)) { + pr_err("Unsupported secvar implementation \"%s\", not loading certs\n", buf); + return -ENODEV; + } + /* * Get db, and dbx. They might not exist, so it isn't an error if we * can't get them. @@ -103,8 +108,6 @@ static int __init load_powerpc_certs(void) kfree(dbx); } - of_node_put(node); - return rc; } late_initcall(load_powerpc_certs); -- 2.39.0
next prev parent reply other threads:[~2023-01-18 6:31 UTC|newest] Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-01-18 6:10 [PATCH v3 00/24] pSeries dynamic secure boot secvar interface + platform keyring loading Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-18 6:10 ` [PATCH v3 01/24] powerpc/secvar: Use u64 in secvar_operations Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-18 6:10 ` [PATCH v3 02/24] powerpc/secvar: WARN_ON_ONCE() if multiple secvar ops are set Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-19 0:59 ` Nicholas Piggin 2023-01-19 0:59 ` Nicholas Piggin 2023-01-18 6:10 ` [PATCH v3 03/24] powerpc/secvar: Use sysfs_emit() instead of sprintf() Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-18 6:10 ` [PATCH v3 04/24] powerpc/secvar: Handle format string in the consumer Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-19 1:02 ` Nicholas Piggin 2023-01-19 1:02 ` Nicholas Piggin 2023-01-19 1:17 ` Nicholas Piggin 2023-01-19 1:17 ` Nicholas Piggin 2023-01-20 0:51 ` Russell Currey 2023-01-20 0:51 ` Russell Currey 2023-01-18 6:10 ` [PATCH v3 05/24] powerpc/secvar: Handle max object size " Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-19 21:18 ` Greg Joyce 2023-01-19 21:18 ` Greg Joyce 2023-01-18 6:10 ` [PATCH v3 06/24] powerpc/secvar: Clean up init error messages Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-18 6:10 ` [PATCH v3 07/24] powerpc/secvar: Extend sysfs to include config vars Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-18 6:10 ` [PATCH v3 08/24] powerpc/secvar: Allow backend to populate static list of variable names Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-19 1:10 ` Nicholas Piggin 2023-01-19 1:10 ` Nicholas Piggin 2023-01-20 6:20 ` Andrew Donnellan 2023-01-20 6:20 ` Andrew Donnellan 2023-01-18 6:10 ` [PATCH v3 09/24] powerpc/secvar: Warn when PAGE_SIZE is smaller than max object size Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-18 6:10 ` [PATCH v3 10/24] powerpc/secvar: Don't print error on ENOENT when reading variables Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-18 6:10 ` [PATCH v3 11/24] powerpc/pseries: Move plpks.h to include directory Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-18 6:10 ` [PATCH v3 12/24] powerpc/pseries: Move PLPKS constants to header file Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-18 6:10 ` [PATCH v3 13/24] powerpc/pseries: Fix handling of PLPKS object flushing timeout Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-19 1:15 ` Nicholas Piggin 2023-01-19 1:15 ` Nicholas Piggin 2023-01-18 6:10 ` [PATCH v3 14/24] powerpc/pseries: Fix alignment of PLPKS structures and buffers Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-18 6:10 ` [PATCH v3 15/24] powerpc/pseries: Expose PLPKS config values, support additional fields Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-18 6:10 ` [PATCH v3 16/24] powerpc/pseries: Implement signed update for PLPKS objects Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-19 1:12 ` Nicholas Piggin 2023-01-19 1:12 ` Nicholas Piggin 2023-01-18 6:10 ` [PATCH v3 17/24] powerpc/pseries: Log hcall return codes for PLPKS debug Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-18 6:10 ` [PATCH v3 18/24] powerpc/pseries: Make caller pass buffer to plpks_read_var() Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-18 6:10 ` [PATCH v3 19/24] powerpc/pseries: Turn PSERIES_PLPKS into a hidden option Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-18 6:10 ` [PATCH v3 20/24] powerpc/pseries: Add helpers to get PLPKS password Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-18 6:10 ` [PATCH v3 21/24] powerpc/pseries: Pass PLPKS password on kexec Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-18 11:52 ` Andrew Donnellan 2023-01-18 11:52 ` Andrew Donnellan 2023-01-18 6:10 ` [PATCH v3 22/24] powerpc/pseries: Implement secvars for dynamic secure boot Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-18 13:06 ` Stefan Berger 2023-01-18 13:06 ` Stefan Berger 2023-01-18 6:10 ` [PATCH v3 23/24] integrity/powerpc: Improve error handling & reporting when loading certs Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan 2023-01-18 6:10 ` Andrew Donnellan [this message] 2023-01-18 6:10 ` [PATCH v3 24/24] integrity/powerpc: Support loading keys from pseries secvar Andrew Donnellan
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