2021-11-20 03:36:23 +00:00
|
|
|
From e8fac903fbd3a1253ac1b4d7442eb64a7ce9b2bd Mon Sep 17 00:00:00 2001
|
2021-03-04 15:12:32 +00:00
|
|
|
From: Ben Hutchings <ben@decadent.org.uk>
|
|
|
|
Date: Mon, 7 Sep 2020 02:51:53 +0100
|
|
|
|
Subject: [PATCH 1/2] Export symbols needed by Android drivers
|
|
|
|
|
|
|
|
We want to enable use of the Android ashmem and binder drivers to
|
|
|
|
support Anbox, but they should not be built-in as that would waste
|
|
|
|
resources and increase security attack surface on systems that don't
|
|
|
|
need them.
|
|
|
|
|
|
|
|
Export the currently un-exported symbols they depend on.
|
|
|
|
---
|
|
|
|
fs/file.c | 1 +
|
|
|
|
kernel/fork.c | 1 +
|
|
|
|
kernel/sched/core.c | 1 +
|
|
|
|
kernel/task_work.c | 1 +
|
|
|
|
mm/memory.c | 1 +
|
|
|
|
mm/shmem.c | 1 +
|
|
|
|
security/security.c | 4 ++++
|
|
|
|
7 files changed, 10 insertions(+)
|
|
|
|
|
|
|
|
diff --git a/fs/file.c b/fs/file.c
|
2021-11-20 03:36:23 +00:00
|
|
|
index 8627dacfc424..1c9e622746f3 100644
|
2021-03-04 15:12:32 +00:00
|
|
|
--- a/fs/file.c
|
|
|
|
+++ b/fs/file.c
|
2021-11-20 03:36:23 +00:00
|
|
|
@@ -804,6 +804,7 @@ int close_fd_get_file(unsigned int fd, struct file **res)
|
|
|
|
|
|
|
|
return ret;
|
2021-03-04 15:12:32 +00:00
|
|
|
}
|
2021-11-20 03:36:23 +00:00
|
|
|
+EXPORT_SYMBOL_GPL(close_fd_get_file);
|
2021-03-04 15:12:32 +00:00
|
|
|
|
2021-11-20 03:36:23 +00:00
|
|
|
void do_close_on_exec(struct files_struct *files)
|
|
|
|
{
|
2021-03-04 15:12:32 +00:00
|
|
|
diff --git a/kernel/fork.c b/kernel/fork.c
|
2021-11-20 03:36:23 +00:00
|
|
|
index 10885c649ca4..0fb1d884af77 100644
|
2021-03-04 15:12:32 +00:00
|
|
|
--- a/kernel/fork.c
|
|
|
|
+++ b/kernel/fork.c
|
2021-11-20 03:36:23 +00:00
|
|
|
@@ -1153,6 +1153,7 @@ void mmput_async(struct mm_struct *mm)
|
2021-03-04 15:12:32 +00:00
|
|
|
schedule_work(&mm->async_put_work);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
+EXPORT_SYMBOL_GPL(mmput_async);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/**
|
|
|
|
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
|
2021-11-20 03:36:23 +00:00
|
|
|
index aea60eae21a7..9269b0796e67 100644
|
2021-03-04 15:12:32 +00:00
|
|
|
--- a/kernel/sched/core.c
|
|
|
|
+++ b/kernel/sched/core.c
|
2021-11-20 03:36:23 +00:00
|
|
|
@@ -6932,6 +6932,7 @@ int can_nice(const struct task_struct *p, const int nice)
|
2021-03-04 15:12:32 +00:00
|
|
|
return (nice_rlim <= task_rlimit(p, RLIMIT_NICE) ||
|
|
|
|
capable(CAP_SYS_NICE));
|
|
|
|
}
|
|
|
|
+EXPORT_SYMBOL_GPL(can_nice);
|
|
|
|
|
|
|
|
#ifdef __ARCH_WANT_SYS_NICE
|
|
|
|
|
|
|
|
diff --git a/kernel/task_work.c b/kernel/task_work.c
|
2021-11-20 03:36:23 +00:00
|
|
|
index 1698fbe6f0e1..2a1644189182 100644
|
2021-03-04 15:12:32 +00:00
|
|
|
--- a/kernel/task_work.c
|
|
|
|
+++ b/kernel/task_work.c
|
2021-07-21 02:09:14 +00:00
|
|
|
@@ -60,6 +60,7 @@ int task_work_add(struct task_struct *task, struct callback_head *work,
|
2021-03-04 15:12:32 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
2021-11-20 03:36:23 +00:00
|
|
|
+EXPORT_SYMBOL_GPL(task_work_add);
|
2021-03-04 15:12:32 +00:00
|
|
|
|
|
|
|
/**
|
2021-07-21 02:09:14 +00:00
|
|
|
* task_work_cancel_match - cancel a pending work added by task_work_add()
|
2021-03-04 15:12:32 +00:00
|
|
|
diff --git a/mm/memory.c b/mm/memory.c
|
2021-11-20 03:36:23 +00:00
|
|
|
index c52be6d6b605..43012ba7ede7 100644
|
2021-03-04 15:12:32 +00:00
|
|
|
--- a/mm/memory.c
|
|
|
|
+++ b/mm/memory.c
|
2021-11-20 03:36:23 +00:00
|
|
|
@@ -1655,6 +1655,7 @@ void zap_page_range(struct vm_area_struct *vma, unsigned long start,
|
2021-03-04 15:12:32 +00:00
|
|
|
mmu_notifier_invalidate_range_end(&range);
|
2021-07-21 02:09:14 +00:00
|
|
|
tlb_finish_mmu(&tlb);
|
2021-03-04 15:12:32 +00:00
|
|
|
}
|
|
|
|
+EXPORT_SYMBOL_GPL(zap_page_range);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* zap_page_range_single - remove user pages in a given range
|
|
|
|
diff --git a/mm/shmem.c b/mm/shmem.c
|
2021-11-20 03:36:23 +00:00
|
|
|
index b5860f4a2738..c1f352f4717d 100644
|
2021-03-04 15:12:32 +00:00
|
|
|
--- a/mm/shmem.c
|
|
|
|
+++ b/mm/shmem.c
|
2021-11-20 03:36:23 +00:00
|
|
|
@@ -4162,6 +4162,7 @@ int shmem_zero_setup(struct vm_area_struct *vma)
|
2021-03-04 15:12:32 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
+EXPORT_SYMBOL_GPL(shmem_zero_setup);
|
|
|
|
|
|
|
|
/**
|
|
|
|
* shmem_read_mapping_page_gfp - read into page cache, using specified page allocation flags.
|
|
|
|
diff --git a/security/security.c b/security/security.c
|
2021-11-20 03:36:23 +00:00
|
|
|
index 67264cb08fb3..3df62aa37ac0 100644
|
2021-03-04 15:12:32 +00:00
|
|
|
--- a/security/security.c
|
|
|
|
+++ b/security/security.c
|
2021-11-20 03:36:23 +00:00
|
|
|
@@ -751,24 +751,28 @@ int security_binder_set_context_mgr(const struct cred *mgr)
|
2021-03-04 15:12:32 +00:00
|
|
|
{
|
|
|
|
return call_int_hook(binder_set_context_mgr, 0, mgr);
|
|
|
|
}
|
|
|
|
+EXPORT_SYMBOL_GPL(security_binder_set_context_mgr);
|
|
|
|
|
2021-11-20 03:36:23 +00:00
|
|
|
int security_binder_transaction(const struct cred *from,
|
|
|
|
const struct cred *to)
|
2021-03-04 15:12:32 +00:00
|
|
|
{
|
|
|
|
return call_int_hook(binder_transaction, 0, from, to);
|
|
|
|
}
|
|
|
|
+EXPORT_SYMBOL_GPL(security_binder_transaction);
|
|
|
|
|
2021-11-20 03:36:23 +00:00
|
|
|
int security_binder_transfer_binder(const struct cred *from,
|
|
|
|
const struct cred *to)
|
2021-03-04 15:12:32 +00:00
|
|
|
{
|
|
|
|
return call_int_hook(binder_transfer_binder, 0, from, to);
|
|
|
|
}
|
|
|
|
+EXPORT_SYMBOL_GPL(security_binder_transfer_binder);
|
|
|
|
|
2021-11-20 03:36:23 +00:00
|
|
|
int security_binder_transfer_file(const struct cred *from,
|
|
|
|
const struct cred *to, struct file *file)
|
2021-03-04 15:12:32 +00:00
|
|
|
{
|
|
|
|
return call_int_hook(binder_transfer_file, 0, from, to, file);
|
|
|
|
}
|
|
|
|
+EXPORT_SYMBOL_GPL(security_binder_transfer_file);
|
|
|
|
|
|
|
|
int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
|
|
|
|
{
|
|
|
|
--
|
2021-11-20 03:36:23 +00:00
|
|
|
2.34.0
|
2021-03-04 15:12:32 +00:00
|
|
|
|