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From: Prakhar Srivastava <prsriva02@gmail.com>
To: linux-integrity@vger.kernel.org,
	linux-security-module@vger.kernel.org,
	linux-kernel@vger.kernel.org
Cc: zohar@linux.ibm.com, roberto.sassu@huawei.com,
	Prakhar Srivastava <prsriva02@gmail.com>
Subject: [PATCH V9 3/3] KEXEC:Call ima_kexec_cmdline to measure the boot command line args
Date: Mon, 17 Jun 2019 11:37:38 -0700
Message-ID: <20190617183738.14484-4-prsriva02@gmail.com> (raw)
In-Reply-To: <20190617183738.14484-1-prsriva02@gmail.com>

During soft reboot(kexec_file_load) boot command line
arguments are not measured.

Call ima hook ima_kexec_cmdline to measure the boot command line
arguments into IMA measurement list.

- call ima_kexec_cmdline from kexec_file_load.
- move the call ima_add_kexec_buffer after the cmdline
args have been measured.

Signed-off-by: Prakhar Srivastava <prsriva02@gmail.com>
Reviewed-by: James Morris <jamorris@linux.microsoft.com>
Acked-by: Dave Young <dyoung@redhat.com>
---
 kernel/kexec_file.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c
index 072b6ee55e3f..b0c724e5d86c 100644
--- a/kernel/kexec_file.c
+++ b/kernel/kexec_file.c
@@ -198,9 +198,6 @@ kimage_file_prepare_segments(struct kimage *image, int kernel_fd, int initrd_fd,
 		return ret;
 	image->kernel_buf_len = size;
 
-	/* IMA needs to pass the measurement list to the next kernel. */
-	ima_add_kexec_buffer(image);
-
 	/* Call arch image probe handlers */
 	ret = arch_kexec_kernel_image_probe(image, image->kernel_buf,
 					    image->kernel_buf_len);
@@ -241,8 +238,14 @@ kimage_file_prepare_segments(struct kimage *image, int kernel_fd, int initrd_fd,
 			ret = -EINVAL;
 			goto out;
 		}
+
+		ima_kexec_cmdline(image->cmdline_buf,
+				  image->cmdline_buf_len - 1);
 	}
 
+	/* IMA needs to pass the measurement list to the next kernel. */
+	ima_add_kexec_buffer(image);
+
 	/* Call arch image load handlers */
 	ldata = arch_kexec_kernel_image_load(image);
 
-- 
2.19.1


      parent reply index

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-17 18:37 [PATCH V8 0/3] Add support for measuring the boot command line during kexec_file_load Prakhar Srivastava
2019-06-17 18:37 ` [PATCH V9 1/3] IMA:Define a new hook to measure the kexec boot command line arguments Prakhar Srivastava
2019-06-19 17:46   ` prakhar srivastava
2019-06-17 18:37 ` [PATCH V9 2/3] IMA:Define a new template field buf Prakhar Srivastava
2019-06-17 18:37 ` Prakhar Srivastava [this message]

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