tpmdd-devel Archive on lore.kernel.org
 help / color / Atom feed
From: David Howells <dhowells-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: denkenz-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
	jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org,
	jejb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org
Cc: tpmdd-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
	linux-integrity-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	keyrings-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-security-module-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH 22/23] TPMLIB: Provide call for TPM_FlushSpecific
Date: Tue, 21 Aug 2018 16:59:18 +0100
Message-ID: <153486715863.13066.9507446322086735862.stgit@warthog.procyon.org.uk> (raw)
In-Reply-To: <153486700916.13066.12870860668352070081.stgit-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>


---

 drivers/char/tpm/tpm-library.c |   31 +++++++++++++++++++++++++++++++
 include/linux/tpm.h            |   17 +++++++++++++++++
 include/linux/tpm_command.h    |    1 +
 3 files changed, 49 insertions(+)

diff --git a/drivers/char/tpm/tpm-library.c b/drivers/char/tpm/tpm-library.c
index d279243ccc00..27e993f0b0b7 100644
--- a/drivers/char/tpm/tpm-library.c
+++ b/drivers/char/tpm/tpm-library.c
@@ -1110,6 +1110,37 @@ out:
 }
 EXPORT_SYMBOL_GPL(tpm_load_key2);
 
+/**
+ * tpm_flush_specific - Tell the TPM to discard a handle and associated resources
+ * @chip: The chip to use
+ * @handle: The handle to discard
+ * @handle_type: The type of handle
+ */
+int tpm_flush_specific(struct tpm_chip *chip,
+		       uint32_t handle, enum tpm_resource_type handle_type)
+{
+	struct tpm_buf *tb;
+	int ret;
+
+	/* alloc some work space */
+	tb = kmalloc(sizeof(*tb), GFP_KERNEL);
+	if (!tb)
+		return -ENOMEM;
+
+	/* build and send the TPM request packet */
+	INIT_BUF(tb);
+	store16(tb, TPM_TAG_RQU_COMMAND);
+	store32(tb, TPM_DATA_OFFSET + 8);
+	store32(tb, TPM_ORD_FLUSHSPECIFIC);
+	store32(tb, handle);
+	store32(tb, handle_type);
+
+	ret = tpm_send_dump(chip, tb, "flushing handle");
+	kfree(tb);
+	return ret;
+}
+EXPORT_SYMBOL_GPL(tpm_flush_specific);
+
 /**
  * tpm_library_use - Tell the TPM library we want to make use of it
  *
diff --git a/include/linux/tpm.h b/include/linux/tpm.h
index 2be0decff93b..753ffd3799a1 100644
--- a/include/linux/tpm.h
+++ b/include/linux/tpm.h
@@ -109,6 +109,19 @@ enum tpm_entity_type {
 	TPM_ET_RESERVED_HANDLE		= 0x40,
 };
 
+enum tpm_resource_type {
+	TPM_RT_KEY			= 0x00000001,
+	TPM_RT_AUTH			= 0x00000002,
+	TPM_RT_HASH			= 0x00000003,
+	TPM_RT_TRANS			= 0x00000004,
+	TPM_RT_CONTEXT			= 0x00000005,
+	TPM_RT_COUNTER			= 0x00000006,
+	TPM_RT_DELEGATE			= 0x00000007,
+	TPM_RT_DAA_TPM			= 0x00000008,
+	TPM_RT_DAA_V0			= 0x00000009,
+	TPM_RT_DAA_V1			= 0x0000000a,
+};
+
 struct tpm_buf {
 	unsigned short len;
 	unsigned short offset;
@@ -154,4 +167,8 @@ extern int tpm_load_key2(struct tpm_chip *chip,
 			 const struct tpm_wrapped_key *wrapped_key,
 			 uint32_t *_key_handle);
 
+extern int tpm_flush_specific(struct tpm_chip *chip,
+			      uint32_t handle,
+			      enum tpm_resource_type handle_type);
+
 #endif
diff --git a/include/linux/tpm_command.h b/include/linux/tpm_command.h
index 211d4ce75f67..8b52447bbee3 100644
--- a/include/linux/tpm_command.h
+++ b/include/linux/tpm_command.h
@@ -30,6 +30,7 @@ enum tpm_ordinal {
 	TPM_ORD_READPUBEK		= 124,
 	TPM_ORD_SAVESTATE		= 152,
 	TPM_ORD_STARTUP			= 153,
+	TPM_ORD_FLUSHSPECIFIC		= 186,
 };
 
 /* Other constants */


------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot

  parent reply index

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-21 15:56 tpm: Provide a TPM access library David Howells
     [not found] ` <153486700916.13066.12870860668352070081.stgit-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2018-08-21 15:56   ` [PATCH 01/23] TPM: Add new TPMs to the tail of the list to prevent inadvertent change of dev David Howells
     [not found]     ` <153486701644.13066.13372706238885253812.stgit-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2018-08-21 18:30       ` Jason Gunthorpe
     [not found]         ` <20180821183004.GB25543-uk2M96/98Pc@public.gmane.org>
2018-08-24  6:24           ` Jarkko Sakkinen
     [not found]             ` <20180824062434.GB3584-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2018-08-24  6:25               ` Jarkko Sakkinen
     [not found]                 ` <20180824062557.GC3584-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2018-08-24 11:22                   ` Mimi Zohar
2018-08-24  6:19       ` Jarkko Sakkinen
2018-08-21 15:57   ` [PATCH 02/23] TPM: Provide a facility for a userspace TPM emulator David Howells
     [not found]     ` <153486702302.13066.15889029286852815542.stgit-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2018-08-21 18:31       ` Jason Gunthorpe
     [not found]         ` <20180821183140.GD25543-uk2M96/98Pc@public.gmane.org>
2018-08-24  6:29           ` Jarkko Sakkinen
2018-08-21 15:57   ` [PATCH 03/23] TPM: Provide a platform driver for the user emulator driver David Howells
     [not found]     ` <153486702979.13066.16900998092976336647.stgit-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2018-08-24  6:30       ` Jarkko Sakkinen
2018-08-21 15:57   ` [PATCH 04/23] TPM: Expose struct tpm_chip and related find_get and put functions David Howells
     [not found]     ` <153486703636.13066.16209594327379341518.stgit-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2018-08-21 18:31       ` Jason Gunthorpe
     [not found]     ` <20180821183108.GC25543-uk2M96/98Pc@public.gmane.org>
2018-08-21 18:35       ` David Howells
2018-08-21 15:57   ` [PATCH 05/23] TPM: Use struct tpm_chip rather than chip number as interface parameter David Howells
     [not found]     ` <153486704294.13066.8818198038331415342.stgit-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2018-08-24  7:42       ` Jarkko Sakkinen
2018-08-21 15:57   ` [PATCH 06/23] TPM: Move ordinal values from interface file to header with other ordinals David Howells
2018-08-21 15:57   ` [PATCH 07/23] TPM: Consolidate tpm_send(), transmit_cmd() and tpm_transmit() David Howells
2018-08-21 15:57   ` [PATCH 08/23] TPMLIB: Break TPM bits out of security/keys/trusted.c David Howells
     [not found]     ` <153486706322.13066.3105842100625841410.stgit-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2018-08-24  7:52       ` Jarkko Sakkinen
     [not found]         ` <20180824075227.GG3584-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2018-08-24  8:49           ` Jarkko Sakkinen
     [not found]         ` <20180824084930.GA10266-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2018-08-24  9:33           ` David Howells
     [not found]             ` <25340.1535103190-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2018-08-27  8:25               ` Jarkko Sakkinen
2018-08-21 15:57   ` [PATCH 09/23] TPMLIB: Do some source cleanups David Howells
2018-08-21 15:57   ` [PATCH 10/23] TPMLIB: Better format calls to TSS_*hmac*() David Howells
2018-08-21 15:58   ` [PATCH 11/23] TPMLIB: Put banner comments on public TPM library functions David Howells
2018-08-21 15:58   ` [PATCH 12/23] TPMLIB: Create tpm_{even, odd}_nonce structs to represent nonces David Howells
2018-08-21 15:58   ` [PATCH 13/23] TPMLIB: Rename store8() and storebytes() David Howells
2018-08-21 15:58   ` [PATCH 14/23] TPMLIB: Make store_s() take a void* data argument, not unsigned char* David Howells
2018-08-21 15:58   ` [PATCH 15/23] TPMLIB: Use __be32 rather than int32_t and use cpu_to_beX() and co David Howells
2018-08-21 15:58   ` [PATCH 16/23] TPMLIB: Put more comments into the HMAC generation functions David Howells
2018-08-21 15:58   ` [PATCH 17/23] TPMLIB: Provide a wrapper to load bytes out of the reply David Howells
2018-08-21 15:58   ` [PATCH 18/23] TPMLIB: Encapsulate XOR-based encryption with authkey derivative David Howells
2018-08-21 15:58   ` [PATCH 19/23] TPMLIB: Add some debugging code David Howells
2018-08-21 15:59   ` [PATCH 20/23] TPMLIB: Implement call to TPM_CreateWrapKey David Howells
2018-08-21 15:59   ` [PATCH 21/23] TPMLIB: Implement call to TPM_LoadKey2 David Howells
2018-08-21 15:59   ` David Howells [this message]
2018-08-21 15:59   ` [PATCH 23/23] TPM: Add an asymmetric key subtype for handling TPM-based keys David Howells
2018-08-22 14:19   ` tpm: Provide a TPM access library Jarkko Sakkinen
     [not found] ` <20180822141956.GA28110-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2018-08-22 14:45   ` David Howells
     [not found]     ` <13611.1534949106-S6HVgzuS8uM4Awkfq6JHfwNdhmdF6hFW@public.gmane.org>
2018-08-23 22:49       ` Jarkko Sakkinen

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=153486715863.13066.9507446322086735862.stgit@warthog.procyon.org.uk \
    --to=dhowells-h+wxahxf7alqt0dzr+alfa@public.gmane.org \
    --cc=denkenz-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org \
    --cc=jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org \
    --cc=jejb-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org \
    --cc=keyrings-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
    --cc=linux-integrity-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
    --cc=linux-security-module-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
    --cc=tpmdd-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

tpmdd-devel Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/tpmdd-devel/0 tpmdd-devel/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 tpmdd-devel tpmdd-devel/ https://lore.kernel.org/tpmdd-devel \
		tpmdd-devel@lists.sourceforge.net
	public-inbox-index tpmdd-devel

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/net.sourceforge.lists.tpmdd-devel


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git