add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/fs/incfs/main.c
..
..
@@ -8,9 +8,8 @@
8
8
 
9
9
 #include <uapi/linux/incrementalfs.h>
10
10
 
11
+#include "sysfs.h"
11
12
 #include "vfs.h"
12
-
13
-#define INCFS_NODE_FEATURES "features"
14
13
 
15
14
 static struct file_system_type incfs_fs_type = {
16
15
 	.owner = THIS_MODULE,
..
..
@@ -20,88 +19,24 @@
20
19
 	.fs_flags = 0
21
20
 };
22
21
 
23
-static struct kobject *sysfs_root, *featurefs_root;
24
-
25
-static ssize_t corefs_show(struct kobject *kobj,
26
-			  struct kobj_attribute *attr, char *buff)
27
-{
28
-	return snprintf(buff, PAGE_SIZE, "supported\n");
29
-}
30
-
31
-static struct kobj_attribute corefs_attr = __ATTR_RO(corefs);
32
-
33
-static ssize_t mounter_context_for_backing_rw_show(struct kobject *kobj,
34
-			  struct kobj_attribute *attr, char *buff)
35
-{
36
-	return snprintf(buff, PAGE_SIZE, "supported\n");
37
-}
38
-
39
-static struct kobj_attribute mounter_context_for_backing_rw_attr =
40
-	__ATTR_RO(mounter_context_for_backing_rw);
41
-
42
-static struct attribute *attributes[] = {
43
-	&corefs_attr.attr,
44
-	&mounter_context_for_backing_rw_attr.attr,
45
-	NULL,
46
-};
47
-
48
-static const struct attribute_group attr_group = {
49
-	.attrs = attributes,
50
-};
51
-
52
-static int __init init_sysfs(void)
53
-{
54
-	int res = 0;
55
-
56
-	sysfs_root = kobject_create_and_add(INCFS_NAME, fs_kobj);
57
-	if (!sysfs_root)
58
-		return -ENOMEM;
59
-
60
-	featurefs_root = kobject_create_and_add(INCFS_NODE_FEATURES,
61
-						sysfs_root);
62
-	if (!featurefs_root)
63
-		return -ENOMEM;
64
-
65
-	res = sysfs_create_group(featurefs_root, &attr_group);
66
-	if (res) {
67
-		kobject_put(sysfs_root);
68
-		sysfs_root = NULL;
69
-	}
70
-	return res;
71
-}
72
-
73
-static void cleanup_sysfs(void)
74
-{
75
-	if (featurefs_root) {
76
-		sysfs_remove_group(featurefs_root, &attr_group);
77
-		kobject_put(featurefs_root);
78
-		featurefs_root = NULL;
79
-	}
80
-
81
-	if (sysfs_root) {
82
-		kobject_put(sysfs_root);
83
-		sysfs_root = NULL;
84
-	}
85
-}
86
-
87
22
 static int __init init_incfs_module(void)
88
23
 {
89
24
 	int err = 0;
90
25
 
91
-	err = init_sysfs();
26
+	err = incfs_init_sysfs();
92
27
 	if (err)
93
28
 		return err;
94
29
 
95
30
 	err = register_filesystem(&incfs_fs_type);
96
31
 	if (err)
97
-		cleanup_sysfs();
32
+		incfs_cleanup_sysfs();
98
33
 
99
34
 	return err;
100
35
 }
101
36
 
102
37
 static void __exit cleanup_incfs_module(void)
103
38
 {
104
-	cleanup_sysfs();
39
+	incfs_cleanup_sysfs();
105
40
 	unregister_filesystem(&incfs_fs_type);
106
41
 }
107
42
 
..
..
@@ -109,5 +44,6 @@
109
44
 module_exit(cleanup_incfs_module);
110
45
 
111
46
 MODULE_LICENSE("GPL v2");
47
+MODULE_IMPORT_NS(ANDROID_GKI_VFS_EXPORT_ONLY);
112
48
 MODULE_AUTHOR("Eugene Zemtsov <ezemtsov@google.com>");
113
49
 MODULE_DESCRIPTION("Incremental File System");