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ANDROID: Incremental fs: Add v2 feature flag

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Roll report_uid feature flag into v2 feature flag

Bug: 174478527
Test: Feature flag present on boot
Signed-off-by: Paul Lawrence <paullawrence@google.com>
Change-Id: I41ee9715904560004e25cc83a5ccc1eb1bdd2b1f
This commit is contained in:
Paul Lawrence
2020-11-30 09:18:42 -08:00
committed by Alistair Delva
parent affa585cc0
commit 6fb25c4252
2 changed files with 23 additions and 22 deletions
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fs/incfs/main.c
+12 -17
View File
@@ -22,34 +22,29 @@ static struct file_system_type incfs_fs_type = {
static struct kobject *sysfs_root, *featurefs_root;
static ssize_t corefs_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buff)
static ssize_t supported(struct kobject *kobj,
struct kobj_attribute *attr, char *buff)
{
return snprintf(buff, PAGE_SIZE, "supported\n");
}
static struct kobj_attribute corefs_attr = __ATTR_RO(corefs);
typedef ssize_t (*const attr_show)(struct kobject *kobj,
struct kobj_attribute *attr, char *buff);
static ssize_t report_uid_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buff)
{
return snprintf(buff, PAGE_SIZE, "supported\n");
}
#define _DECLARE_FEATURE_FLAG(name) \
static attr_show name##_show = supported; \
static struct kobj_attribute name##_attr = __ATTR_RO(name)
static struct kobj_attribute report_uid_attr = __ATTR_RO(report_uid);
#define DECLARE_FEATURE_FLAG(name) _DECLARE_FEATURE_FLAG(name)
static ssize_t zstd_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buff)
{
return snprintf(buff, PAGE_SIZE, "supported\n");
}
static struct kobj_attribute zstd_attr = __ATTR_RO(zstd);
DECLARE_FEATURE_FLAG(corefs);
DECLARE_FEATURE_FLAG(zstd);
DECLARE_FEATURE_FLAG(v2);
static struct attribute *attributes[] = {
&corefs_attr.attr,
&report_uid_attr.attr,
&zstd_attr.attr,
&v2_attr.attr,
NULL,
};
include/uapi/linux/incrementalfs.h
+11 -5
View File
@@ -136,16 +136,22 @@
*/
#define INCFS_FEATURE_FLAG_COREFS "corefs"
/*
* report_uid mount option is supported
*/
#define INCFS_FEATURE_FLAG_REPORT_UID "report_uid"
/*
* zstd compression support
*/
#define INCFS_FEATURE_FLAG_ZSTD "zstd"
/*
* v2 feature set support. Covers:
* INCFS_IOC_CREATE_MAPPED_FILE
* INCFS_IOC_GET_BLOCK_COUNT
* INCFS_IOC_GET_READ_TIMEOUTS/INCFS_IOC_SET_READ_TIMEOUTS
* .blocks_written status file
* .incomplete folder
* report_uid mount option
*/
#define INCFS_FEATURE_FLAG_V2 "v2"
enum incfs_compression_alg {
COMPRESSION_NONE = 0,
COMPRESSION_LZ4 = 1,