154 lines
4.2 KiB
Diff
154 lines
4.2 KiB
Diff
From: Ben Hutchings <ben@decadent.org.uk>
|
|
Date: Tue, 08 Jul 2025 13:32:21 +0200
|
|
Subject: 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.
|
|
|
|
---
|
|
fs/file.c | 1 +
|
|
ipc/msgutil.c | 1 +
|
|
ipc/namespace.c | 1 +
|
|
kernel/sched/syscalls.c | 1 +
|
|
kernel/sched/wait.c | 1 +
|
|
kernel/task_work.c | 1 +
|
|
mm/list_lru.c | 2 ++
|
|
mm/memory.c | 2 ++
|
|
security/security.c | 4 ++++
|
|
9 files changed, 14 insertions(+)
|
|
|
|
--- a/fs/file.c
|
|
+++ b/fs/file.c
|
|
@@ -843,6 +843,7 @@ struct file *file_close_fd(unsigned int
|
|
|
|
return file;
|
|
}
|
|
+EXPORT_SYMBOL_GPL(file_close_fd);
|
|
|
|
void do_close_on_exec(struct files_struct *files)
|
|
{
|
|
--- 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;
|
|
--- 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)
|
|
{
|
|
--- a/kernel/sched/syscalls.c
|
|
+++ b/kernel/sched/syscalls.c
|
|
@@ -140,6 +140,7 @@ int can_nice(const struct task_struct *p
|
|
{
|
|
return is_nice_reduction(p, nice) || capable(CAP_SYS_NICE);
|
|
}
|
|
+EXPORT_SYMBOL_GPL(can_nice);
|
|
|
|
#ifdef __ARCH_WANT_SYS_NICE
|
|
|
|
--- a/kernel/sched/wait.c
|
|
+++ b/kernel/sched/wait.c
|
|
@@ -212,6 +212,7 @@ void __wake_up_pollfree(struct wait_queu
|
|
/* 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,
|
|
--- a/kernel/task_work.c
|
|
+++ b/kernel/task_work.c
|
|
@@ -96,6 +96,7 @@ int task_work_add(struct task_struct *ta
|
|
|
|
return 0;
|
|
}
|
|
+EXPORT_SYMBOL_GPL(task_work_add);
|
|
|
|
/**
|
|
* task_work_cancel_match - cancel a pending work added by task_work_add()
|
|
--- a/mm/list_lru.c
|
|
+++ b/mm/list_lru.c
|
|
@@ -175,6 +175,7 @@ bool list_lru_add(struct list_lru *lru,
|
|
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)
|
|
{
|
|
@@ -212,6 +213,7 @@ bool list_lru_del(struct list_lru *lru,
|
|
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)
|
|
{
|
|
--- a/mm/memory.c
|
|
+++ b/mm/memory.c
|
|
@@ -2020,6 +2020,7 @@ void zap_page_range_single(struct vm_are
|
|
tlb_finish_mmu(&tlb);
|
|
hugetlb_zap_end(vma, details);
|
|
}
|
|
+EXPORT_SYMBOL_GPL(zap_page_range_single);
|
|
|
|
/**
|
|
* zap_vma_ptes - remove ptes mapping the vma
|
|
@@ -6567,6 +6568,7 @@ inval:
|
|
count_vm_vma_lock_event(VMA_LOCK_ABORT);
|
|
return NULL;
|
|
}
|
|
+EXPORT_SYMBOL_GPL(lock_vma_under_rcu);
|
|
#endif /* CONFIG_PER_VMA_LOCK */
|
|
|
|
#ifndef __PAGETABLE_P4D_FOLDED
|
|
--- a/security/security.c
|
|
+++ b/security/security.c
|
|
@@ -996,6 +996,7 @@ int security_binder_set_context_mgr(cons
|
|
{
|
|
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 st
|
|
{
|
|
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(cons
|
|
{
|
|
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
|
|
{
|
|
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
|