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| author | Theodore Ts'o <tytso@mit.edu> | 2019-08-11 23:31:41 +0300 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2019-08-11 23:31:41 +0300 |
| commit | 1ad3ea6e0a694b0486eb2cbe60378ad0fbf23642 (patch) | |
| tree | b728b3450505eac1e85fb7898f49769a22a2938d /fs/ext4/ext4.h | |
| parent | b0c013e2928d3696ceb6401311dbc1d7fcccd6dd (diff) | |
| download | linux-1ad3ea6e0a694b0486eb2cbe60378ad0fbf23642.tar.xz | |
ext4: add a new ioctl EXT4_IOC_GETSTATE
The new ioctl EXT4_IOC_GETSTATE returns some of the dynamic state of
an ext4 inode for debugging purposes.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4.h')
| -rw-r--r-- | fs/ext4/ext4.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index b22f24f1d365..ee296797bcd2 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -651,6 +651,7 @@ enum { #define EXT4_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY /* ioctl codes 19--39 are reserved for fscrypt */ #define EXT4_IOC_CLEAR_ES_CACHE _IO('f', 40) +#define EXT4_IOC_GETSTATE _IOW('f', 41, __u32) #define EXT4_IOC_FSGETXATTR FS_IOC_FSGETXATTR #define EXT4_IOC_FSSETXATTR FS_IOC_FSSETXATTR @@ -664,6 +665,16 @@ enum { #define EXT4_GOING_FLAGS_LOGFLUSH 0x1 /* flush log but not data */ #define EXT4_GOING_FLAGS_NOLOGFLUSH 0x2 /* don't flush log nor data */ +/* + * Flags returned by EXT4_IOC_GETSTATE + * + * We only expose to userspace a subset of the state flags in + * i_state_flags + */ +#define EXT4_STATE_FLAG_EXT_PRECACHED 0x00000001 +#define EXT4_STATE_FLAG_NEW 0x00000002 +#define EXT4_STATE_FLAG_NEWENTRY 0x00000004 +#define EXT4_STATE_FLAG_DA_ALLOC_CLOSE 0x00000008 #if defined(__KERNEL__) && defined(CONFIG_COMPAT) /* |