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FAILED: patch "[PATCH] ima: show rules with IMA_INMASK correctly" failed to apply to 4.9-stable tree

PATCH [email protected] 1 participant 1 message Jun 4, 2019

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Stable branch Security (LSM) Integrity measurement architecture (IMA) Extended Verification Module (EVM)
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The patch below does not apply to the 4.9-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 8cdc23a3d9ec0944000ad43bad588e36afdc38cd Mon Sep 17 00:00:00 2001
From: Roberto Sassu <[email protected]>
Date: Wed, 29 May 2019 15:30:35 +0200
Subject: [PATCH] ima: show rules with IMA_INMASK correctly

Show the '^' character when a policy rule has flag IMA_INMASK.

Fixes 80eae209d63ac ("IMA: allow reading back the current IMA policy")
Signed-off-by Roberto Sassu <[email protected]>
Cc [email protected]
Signed-off-by Mimi Zohar <[email protected]>
security/integrity/ima/ima_policy.c +12 -9
index 0f6fe53cef09..1cc822a59054 100644
@@ -1147,10 +1147,10 @@ enum {
 };
 
 static const char *const mask_tokens[] = {
-	"MAY_EXEC",
-	"MAY_WRITE",
-	"MAY_READ",
-	"MAY_APPEND"
+	"^MAY_EXEC",
+	"^MAY_WRITE",
+	"^MAY_READ",
+	"^MAY_APPEND"
 };
 
 #define __ima_hook_stringify(str)	(#str),

@@ -1210,6 +1210,7 @@ int ima_policy_show(struct seq_file *m, void *v)
 	struct ima_rule_entry *entry = v;
 	int i;
 	char tbuf[64] = {0,};
+	int offset = 0;
 
 	rcu_read_lock();
 

@@ -1233,15 +1234,17 @@ int ima_policy_show(struct seq_file *m, void *v)
 	if (entry->flags & IMA_FUNC)
 		policy_func_show(m, entry->func);
 
-	if (entry->flags & IMA_MASK) {
+	if ((entry->flags & IMA_MASK) || (entry->flags & IMA_INMASK)) {
+		if (entry->flags & IMA_MASK)
+			offset = 1;
 		if (entry->mask & MAY_EXEC)
-			seq_printf(m, pt(Opt_mask), mt(mask_exec));
+			seq_printf(m, pt(Opt_mask), mt(mask_exec) + offset);
 		if (entry->mask & MAY_WRITE)
-			seq_printf(m, pt(Opt_mask), mt(mask_write));
+			seq_printf(m, pt(Opt_mask), mt(mask_write) + offset);
 		if (entry->mask & MAY_READ)
-			seq_printf(m, pt(Opt_mask), mt(mask_read));
+			seq_printf(m, pt(Opt_mask), mt(mask_read) + offset);
 		if (entry->mask & MAY_APPEND)
-			seq_printf(m, pt(Opt_mask), mt(mask_append));
+			seq_printf(m, pt(Opt_mask), mt(mask_append) + offset);
 		seq_puts(m, " ");
 	}