linux-kernel - [PATCH] security: export binder symbols

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Message-ID: <20260119085109.2238878-1-aliceryhl@google.com>
Date: Mon, 19 Jan 2026 08:51:07 +0000
From: Alice Ryhl <aliceryhl@...gle.com>
To: Paul Moore <paul@...l-moore.com>, James Morris <jmorris@...ei.org>, 
	"Serge E. Hallyn" <serge@...lyn.com>
Cc: Alice Ryhl <aliceryhl@...gle.com>, Carlos Llamas <cmllamas@...gle.com>, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>, linux-security-module@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: [PATCH] security: export binder symbols

To enable building Rust Binder (possibly also C Binder) as a module,
export these symbols.

Signed-off-by: Alice Ryhl <aliceryhl@...gle.com>
---
 security/security.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/security/security.c b/security/security.c
index 31a688650601..b4776f0e25b3 100644
--- a/security/security.c
+++ b/security/security.c
@@ -479,61 +479,65 @@ int security_binder_set_context_mgr(const struct cred *mgr)
 /**
  * security_binder_set_context_mgr() - Check if becoming binder ctx mgr is ok
  * @mgr: task credentials of current binder process
  *
  * Check whether @mgr is allowed to be the binder context manager.
  *
  * Return: Return 0 if permission is granted.
  */
 int security_binder_set_context_mgr(const struct cred *mgr)
 {
 	return call_int_hook(binder_set_context_mgr, mgr);
 }
+EXPORT_SYMBOL_GPL(security_binder_set_context_mgr);
 
 /**
  * security_binder_transaction() - Check if a binder transaction is allowed
  * @from: sending process
  * @to: receiving process
  *
  * Check whether @from is allowed to invoke a binder transaction call to @to.
  *
  * Return: Returns 0 if permission is granted.
  */
 int security_binder_transaction(const struct cred *from,
 				const struct cred *to)
 {
 	return call_int_hook(binder_transaction, from, to);
 }
+EXPORT_SYMBOL_GPL(security_binder_transaction);
 
 /**
  * security_binder_transfer_binder() - Check if a binder transfer is allowed
  * @from: sending process
  * @to: receiving process
  *
  * Check whether @from is allowed to transfer a binder reference to @to.
  *
  * Return: Returns 0 if permission is granted.
  */
 int security_binder_transfer_binder(const struct cred *from,
 				    const struct cred *to)
 {
 	return call_int_hook(binder_transfer_binder, from, to);
 }
+EXPORT_SYMBOL_GPL(security_binder_transfer_binder);
 
 /**
  * security_binder_transfer_file() - Check if a binder file xfer is allowed
  * @from: sending process
  * @to: receiving process
  * @file: file being transferred
  *
  * Check whether @from is allowed to transfer @file to @to.
  *
  * Return: Returns 0 if permission is granted.
  */
 int security_binder_transfer_file(const struct cred *from,
 				  const struct cred *to, const struct file *file)
 {
 	return call_int_hook(binder_transfer_file, from, to, file);
 }
+EXPORT_SYMBOL_GPL(security_binder_transfer_file);
 
 /**
  * security_ptrace_access_check() - Check if tracing is allowed

base-commit: 8f0b4cce4481fb22653697cced8d0d04027cb1e8
prerequisite-patch-id: 0000000000000000000000000000000000000000
-- 
2.52.0.457.g6b5491de43-goog