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