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2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/security/integrity/ima/ima_fs.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Copyright (C) 2005,2006,2007,2008 IBM Corporation
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  *
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@@ -6,21 +7,15 @@
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  * Reiner Sailer <sailer@us.ibm.com>
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  * Mimi Zohar <zohar@us.ibm.com>
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  *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public License as
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- * published by the Free Software Foundation, version 2 of the
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- * License.
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- *
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  * File: ima_fs.c
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  *	implemenents security file system for reporting
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  *	current measurement list and IMA statistics
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  */
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-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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-
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 #include <linux/fcntl.h>
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+#include <linux/kernel_read_file.h>
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 #include <linux/slab.h>
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-#include <linux/module.h>
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+#include <linux/init.h>
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 #include <linux/seq_file.h>
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 #include <linux/rculist.h>
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 #include <linux/rcupdate.h>
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@@ -156,7 +151,7 @@
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 	ima_putc(m, &pcr, sizeof(e->pcr));
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 	/* 2nd: template digest */
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-	ima_putc(m, e->digest, TPM_DIGEST_SIZE);
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+	ima_putc(m, e->digests[ima_sha1_idx].digest, TPM_DIGEST_SIZE);
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 	/* 3rd: template name size */
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 	namelen = !ima_canonical_fmt ? strlen(template_name) :
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@@ -179,7 +174,8 @@
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 	/* 6th:  template specific data */
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 	for (i = 0; i < e->template_desc->num_fields; i++) {
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 		enum ima_show_type show = IMA_SHOW_BINARY;
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-		struct ima_template_field *field = e->template_desc->fields[i];
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+		const struct ima_template_field *field =
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+			e->template_desc->fields[i];
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 		if (is_ima_template && strcmp(field->field_id, "d") == 0)
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 			show = IMA_SHOW_BINARY_NO_FIELD_LEN;
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@@ -238,7 +234,7 @@
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 	seq_printf(m, "%2d ", e->pcr);
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 	/* 2nd: SHA1 template hash */
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-	ima_print_digest(m, e->digest, TPM_DIGEST_SIZE);
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+	ima_print_digest(m, e->digests[ima_sha1_idx].digest, TPM_DIGEST_SIZE);
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 	/* 3th:  template name */
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 	seq_printf(m, " %s", template_name);
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@@ -277,9 +273,9 @@
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 static ssize_t ima_read_policy(char *path)
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 {
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-	void *data;
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+	void *data = NULL;
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 	char *datap;
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-	loff_t size;
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+	size_t size;
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 	int rc, pathlen = strlen(path);
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 	char *p;
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@@ -288,11 +284,14 @@
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 	datap = path;
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 	strsep(&datap, "\n");
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-	rc = kernel_read_file_from_path(path, &data, &size, 0, READING_POLICY);
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+	rc = kernel_read_file_from_path(path, 0, &data, INT_MAX, NULL,
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+					READING_POLICY);
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 	if (rc < 0) {
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 		pr_err("Unable to open file: %s (%d)", path, rc);
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 		return rc;
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 	}
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+	size = rc;
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+	rc = 0;
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 	datap = data;
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 	while (size > 0 && (p = strsep(&datap, "\n"))) {