From: Ben Hutchings <ben@decadent.org.uk>
Date: Tue, 8 Jul 2025 11:32:21 +0000 (+0200)
Subject: Export symbols needed by binder
X-Git-Tag: archive/raspbian/6.17.13-1+rpi1~2^2~57
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=975bfdb7b1ad6b3db01ffa0862602a95a0f26094;p=linux.git

Export symbols needed by binder

Bug-Debian: https://bugs.debian.org/901492

We want to enable use of the Android binder driver to support
Waydroid, but it should not be built-in as that would waste resources
and increase security attack surface on systems that don't need it.

Export the currently un-exported symbols it depends on.


Gbp-Pq: Topic debian
Gbp-Pq: Name export-symbols-needed-by-binder.patch
---

diff --git a/fs/file.c b/fs/file.c
index 28743b742e3..d030787add3 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -858,6 +858,7 @@ struct file *file_close_fd(unsigned int fd)
 
 	return file;
 }
+EXPORT_SYMBOL_GPL(file_close_fd);
 
 void do_close_on_exec(struct files_struct *files)
 {
diff --git a/ipc/msgutil.c b/ipc/msgutil.c
index c7be0c79264..6306109822e 100644
--- a/ipc/msgutil.c
+++ b/ipc/msgutil.c
@@ -33,6 +33,7 @@ struct ipc_namespace init_ipc_ns = {
 	.ns.ops = &ipcns_operations,
 #endif
 };
+EXPORT_SYMBOL_GPL(init_ipc_ns);
 
 struct msg_msgseg {
 	struct msg_msgseg *next;
diff --git a/ipc/namespace.c b/ipc/namespace.c
index 4df91ceeeaf..c075e7b8d52 100644
--- a/ipc/namespace.c
+++ b/ipc/namespace.c
@@ -207,6 +207,7 @@ void put_ipc_ns(struct ipc_namespace *ns)
 			schedule_work(&free_ipc_work);
 	}
 }
+EXPORT_SYMBOL_GPL(put_ipc_ns);
 
 static inline struct ipc_namespace *to_ipc_ns(struct ns_common *ns)
 {
diff --git a/kernel/sched/syscalls.c b/kernel/sched/syscalls.c
index 77ae87f36e8..90f65d9bbd0 100644
--- a/kernel/sched/syscalls.c
+++ b/kernel/sched/syscalls.c
@@ -140,6 +140,7 @@ int can_nice(const struct task_struct *p, const int nice)
 {
 	return is_nice_reduction(p, nice) || capable(CAP_SYS_NICE);
 }
+EXPORT_SYMBOL_GPL(can_nice);
 
 #ifdef __ARCH_WANT_SYS_NICE
 
diff --git a/kernel/sched/wait.c b/kernel/sched/wait.c
index 20f27e2cf7a..8b1338c2834 100644
--- a/kernel/sched/wait.c
+++ b/kernel/sched/wait.c
@@ -231,6 +231,7 @@ void __wake_up_pollfree(struct wait_queue_head *wq_head)
 	/* POLLFREE must have cleared the queue. */
 	WARN_ON_ONCE(waitqueue_active(wq_head));
 }
+EXPORT_SYMBOL_GPL(__wake_up_pollfree);
 
 /*
  * Note: we use "set_current_state()" _after_ the wait-queue add,
diff --git a/kernel/task_work.c b/kernel/task_work.c
index 0f7519f8e7c..45fd146b85d 100644
--- a/kernel/task_work.c
+++ b/kernel/task_work.c
@@ -102,6 +102,7 @@ int task_work_add(struct task_struct *task, struct callback_head *work,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(task_work_add);
 
 /**
  * task_work_cancel_match - cancel a pending work added by task_work_add()
diff --git a/mm/list_lru.c b/mm/list_lru.c
index ec48b5dadf5..bf95d73c981 100644
--- a/mm/list_lru.c
+++ b/mm/list_lru.c
@@ -179,6 +179,7 @@ bool list_lru_add(struct list_lru *lru, struct list_head *item, int nid,
 	unlock_list_lru(l, false);
 	return false;
 }
+EXPORT_SYMBOL_GPL(list_lru_add);
 
 bool list_lru_add_obj(struct list_lru *lru, struct list_head *item)
 {
@@ -216,6 +217,7 @@ bool list_lru_del(struct list_lru *lru, struct list_head *item, int nid,
 	unlock_list_lru(l, false);
 	return false;
 }
+EXPORT_SYMBOL_GPL(list_lru_del);
 
 bool list_lru_del_obj(struct list_lru *lru, struct list_head *item)
 {
diff --git a/mm/memory.c b/mm/memory.c
index 75f3b66be1d..d8ee36e78f0 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2042,6 +2042,7 @@ void zap_page_range_single(struct vm_area_struct *vma, unsigned long address,
 	zap_page_range_single_batched(&tlb, vma, address, size, details);
 	tlb_finish_mmu(&tlb);
 }
+EXPORT_SYMBOL_GPL(zap_page_range_single);
 
 /**
  * zap_vma_ptes - remove ptes mapping the vma
diff --git a/mm/mmap_lock.c b/mm/mmap_lock.c
index b006cec8e6f..b9c16662db6 100644
--- a/mm/mmap_lock.c
+++ b/mm/mmap_lock.c
@@ -267,6 +267,7 @@ fallback:
 
 	return vma;
 }
+EXPORT_SYMBOL_GPL(lock_vma_under_rcu);
 #endif /* CONFIG_PER_VMA_LOCK */
 
 #ifdef CONFIG_LOCK_MM_AND_FIND_VMA
diff --git a/security/security.c b/security/security.c
index ad163f06bf7..6d784386dec 100644
--- a/security/security.c
+++ b/security/security.c
@@ -996,6 +996,7 @@ 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
@@ -1011,6 +1012,7 @@ int security_binder_transaction(const struct cred *from,
 {
 	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
@@ -1026,6 +1028,7 @@ int security_binder_transfer_binder(const struct cred *from,
 {
 	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
@@ -1042,6 +1045,7 @@ int security_binder_transfer_file(const struct cred *from,
 {
 	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