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aufs: allow aufs to be loaded as module

Aufs was designed to be loaded statically.
We export the API Aufs needs to be loaded and unloaded as a module.
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heftig committed Jul 29, 2012
1 parent 4561345 commit f4ce92c5362e532f457c795973462dd7db5d6c8c
Showing with 34 additions and 1 deletion.
  1. +2 −1 fs/aufs/Kconfig
  2. +3 −0 fs/file_table.c
  3. +2 −0 fs/inode.c
  4. +1 −0 fs/namei.c
  5. +2 −0 fs/namespace.c
  6. +3 −0 fs/notify/group.c
  7. +4 −0 fs/notify/mark.c
  8. +1 −0 fs/open.c
  9. +2 −0 fs/splice.c
  10. +2 −0 security/commoncap.c
  11. +2 −0 security/device_cgroup.c
  12. +10 −0 security/security.c
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@@ -1,5 +1,5 @@
config AUFS_FS
- bool "Aufs (Advanced multi layered unification filesystem) support"
+ tristate "Aufs (Advanced multi layered unification filesystem) support"
depends on EXPERIMENTAL
help
Aufs is a stackable unification filesystem such as Unionfs,
@@ -54,6 +54,7 @@ config AUFS_SBILIST
config AUFS_HNOTIFY
bool "Detect direct branch access (bypassing aufs)"
+ depends on !AUFS_FS=m
help
If you want to modify files on branches directly, eg. bypassing aufs,
and want aufs to detect the changes of them fully, then enable this
View
@@ -37,6 +37,7 @@ struct files_stat_struct files_stat = {
};
DEFINE_LGLOCK(files_lglock);
+EXPORT_SYMBOL(files_lglock);
/* SLAB cache for file structures */
static struct kmem_cache *filp_cachep __read_mostly;
@@ -403,6 +404,8 @@ void file_sb_list_del(struct file *file)
}
}
+EXPORT_SYMBOL(file_sb_list_del);
+
#ifdef CONFIG_SMP
/*
View
@@ -56,6 +56,7 @@ static struct hlist_head *inode_hashtable __read_mostly;
static __cacheline_aligned_in_smp DEFINE_SPINLOCK(inode_hash_lock);
__cacheline_aligned_in_smp DEFINE_SPINLOCK(inode_sb_list_lock);
+EXPORT_SYMBOL(inode_sb_list_lock);
/*
* Empty aops. Can be used for the cases where the user does not
@@ -1519,6 +1520,7 @@ int update_time(struct inode *inode, struct timespec *time, int flags)
mark_inode_dirty_sync(inode);
return 0;
}
+EXPORT_SYMBOL(update_time);
/**
* touch_atime - update the access time
View
@@ -2105,6 +2105,7 @@ static struct dentry *lookup_hash(struct nameidata *nd)
{
return __lookup_hash(&nd->last, nd->path.dentry, nd->flags);
}
+EXPORT_SYMBOL(lookup_hash);
/**
* lookup_one_len - filesystem helper to lookup single pathname component
View
@@ -50,6 +50,7 @@ EXPORT_SYMBOL_GPL(fs_kobj);
* tree or hash is modified or when a vfsmount structure is modified.
*/
DEFINE_BRLOCK(vfsmount_lock);
+EXPORT_SYMBOL(vfsmount_lock);
static inline unsigned long hash(struct vfsmount *mnt, struct dentry *dentry)
{
@@ -1401,6 +1402,7 @@ int iterate_mounts(int (*f)(struct vfsmount *, void *), void *arg,
}
return 0;
}
+EXPORT_SYMBOL(iterate_mounts);
static void cleanup_group_ids(struct mount *mnt, struct mount *end)
{
View
@@ -22,6 +22,7 @@
#include <linux/srcu.h>
#include <linux/rculist.h>
#include <linux/wait.h>
+#include <linux/module.h>
#include <linux/fsnotify_backend.h>
#include "fsnotify.h"
@@ -70,6 +71,7 @@ void fsnotify_put_group(struct fsnotify_group *group)
if (atomic_dec_and_test(&group->refcnt))
fsnotify_destroy_group(group);
}
+EXPORT_SYMBOL(fsnotify_put_group);
/*
* Create a new fsnotify_group and hold a reference for the group returned.
@@ -102,3 +104,4 @@ struct fsnotify_group *fsnotify_alloc_group(const struct fsnotify_ops *ops)
return group;
}
+EXPORT_SYMBOL(fsnotify_alloc_group);
View
@@ -112,6 +112,7 @@ void fsnotify_put_mark(struct fsnotify_mark *mark)
if (atomic_dec_and_test(&mark->refcnt))
mark->free_mark(mark);
}
+EXPORT_SYMBOL(fsnotify_put_mark);
/*
* Any time a mark is getting freed we end up here.
@@ -191,6 +192,7 @@ void fsnotify_destroy_mark(struct fsnotify_mark *mark)
if (unlikely(atomic_dec_and_test(&group->num_marks)))
fsnotify_final_destroy_group(group);
}
+EXPORT_SYMBOL(fsnotify_destroy_mark);
void fsnotify_set_mark_mask_locked(struct fsnotify_mark *mark, __u32 mask)
{
@@ -278,6 +280,7 @@ int fsnotify_add_mark(struct fsnotify_mark *mark,
return ret;
}
+EXPORT_SYMBOL(fsnotify_add_mark);
/*
* clear any marks in a group in which mark->flags & flags is true
@@ -333,6 +336,7 @@ void fsnotify_init_mark(struct fsnotify_mark *mark,
atomic_set(&mark->refcnt, 1);
mark->free_mark = free_mark;
}
+EXPORT_SYMBOL(fsnotify_init_mark);
static int fsnotify_mark_destroy(void *ignored)
{
View
@@ -60,6 +60,7 @@ int do_truncate(struct dentry *dentry, loff_t length, unsigned int time_attrs,
mutex_unlock(&dentry->d_inode->i_mutex);
return ret;
}
+EXPORT_SYMBOL(do_truncate);
static long do_sys_truncate(const char __user *pathname, loff_t length)
{
View
@@ -1117,6 +1117,7 @@ long do_splice_from(struct pipe_inode_info *pipe, struct file *out,
return splice_write(pipe, out, ppos, len, flags);
}
+EXPORT_SYMBOL(do_splice_from);
/*
* Attempt to initiate a splice from a file to a pipe.
@@ -1143,6 +1144,7 @@ long do_splice_to(struct file *in, loff_t *ppos,
return splice_read(in, ppos, pipe, len, flags);
}
+EXPORT_SYMBOL(do_splice_to);
/**
* splice_direct_to_actor - splices data directly between two non-pipes
View
@@ -979,9 +979,11 @@ int cap_mmap_addr(unsigned long addr)
}
return ret;
}
+EXPORT_SYMBOL(cap_mmap_addr);
int cap_mmap_file(struct file *file, unsigned long reqprot,
unsigned long prot, unsigned long flags)
{
return 0;
}
+EXPORT_SYMBOL(cap_mmap_file);
View
@@ -7,6 +7,7 @@
#include <linux/device_cgroup.h>
#include <linux/cgroup.h>
#include <linux/ctype.h>
+#include <linux/export.h>
#include <linux/list.h>
#include <linux/uaccess.h>
#include <linux/seq_file.h>
@@ -617,6 +618,7 @@ int __devcgroup_inode_permission(struct inode *inode, int mask)
return __devcgroup_check_permission(type, imajor(inode), iminor(inode),
access);
}
+EXPORT_SYMBOL(__devcgroup_inode_permission);
int devcgroup_inode_mknod(int mode, dev_t dev)
{
View
@@ -396,6 +396,7 @@ int security_path_rmdir(struct path *dir, struct dentry *dentry)
return 0;
return security_ops->path_rmdir(dir, dentry);
}
+EXPORT_SYMBOL(security_path_rmdir);
int security_path_unlink(struct path *dir, struct dentry *dentry)
{
@@ -412,6 +413,7 @@ int security_path_symlink(struct path *dir, struct dentry *dentry,
return 0;
return security_ops->path_symlink(dir, dentry, old_name);
}
+EXPORT_SYMBOL(security_path_symlink);
int security_path_link(struct dentry *old_dentry, struct path *new_dir,
struct dentry *new_dentry)
@@ -420,6 +422,7 @@ int security_path_link(struct dentry *old_dentry, struct path *new_dir,
return 0;
return security_ops->path_link(old_dentry, new_dir, new_dentry);
}
+EXPORT_SYMBOL(security_path_link);
int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
struct path *new_dir, struct dentry *new_dentry)
@@ -438,20 +441,23 @@ int security_path_truncate(struct path *path)
return 0;
return security_ops->path_truncate(path);
}
+EXPORT_SYMBOL(security_path_truncate);
int security_path_chmod(struct path *path, umode_t mode)
{
if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
return 0;
return security_ops->path_chmod(path, mode);
}
+EXPORT_SYMBOL(security_path_chmod);
int security_path_chown(struct path *path, kuid_t uid, kgid_t gid)
{
if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
return 0;
return security_ops->path_chown(path, uid, gid);
}
+EXPORT_SYMBOL(security_path_chown);
int security_path_chroot(struct path *path)
{
@@ -528,6 +534,7 @@ int security_inode_readlink(struct dentry *dentry)
return 0;
return security_ops->inode_readlink(dentry);
}
+EXPORT_SYMBOL(security_inode_readlink);
int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
{
@@ -542,6 +549,7 @@ int security_inode_permission(struct inode *inode, int mask)
return 0;
return security_ops->inode_permission(inode, mask);
}
+EXPORT_SYMBOL(security_inode_permission);
int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
{
@@ -663,6 +671,7 @@ int security_file_permission(struct file *file, int mask)
return fsnotify_perm(file, mask);
}
+EXPORT_SYMBOL(security_file_permission);
int security_file_alloc(struct file *file)
{
@@ -723,6 +732,7 @@ int security_mmap_file(struct file *file, unsigned long prot,
return ret;
return ima_file_mmap(file, prot);
}
+EXPORT_SYMBOL(security_mmap_file);
int security_mmap_addr(unsigned long addr)
{

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