Add support for an additional filesystem version (sb_fs_format = 1802). When a filesystem with the new version is mounted, the filesystem supports "trusted.*" xattrs. In addition, version 1802 filesystems implement a form of forward compatibility for xattrs: when xattrs with an unknown prefix (ea_type) are found on a version 1802 filesystem, those attributes are not shown by listxattr, and they are not accessible by getxattr, setxattr, or removexattr. This mechanism might turn out to be what we need in the future, but if not, we can always bump the filesystem version and break compatibility instead.
Showing the changes to include/uapi (1 of 4 files). Show all
Unified · Split
| @@ -47,7 +47,7 @@ · 46 unmodified lines | ||
| 47 | 47 | #define GFS2_FORMAT_DE 1200 |
| 48 | 48 | #define GFS2_FORMAT_QU 1500 |
| 49 | 49 | /* These are part of the superblock */ |
| 50 | −#define GFS2_FORMAT_FS 1801 | |
| 50 | +#define GFS2_FORMAT_FS 1802 | |
| 51 | 51 | #define GFS2_FORMAT_MULTI 1900 |
| 52 | 52 | |
| 53 | 53 | /* |
| @@ -389,8 +389,9 @@ struct gfs2_leaf { · 335 unmodified lines | ||
| 389 | 389 | #define GFS2_EATYPE_USR 1 |
| 390 | 390 | #define GFS2_EATYPE_SYS 2 |
| 391 | 391 | #define GFS2_EATYPE_SECURITY 3 |
| 392 | +#define GFS2_EATYPE_TRUSTED 4 | |
| 392 | 393 | |
| 393 | −#define GFS2_EATYPE_LAST 3 | |
| 394 | +#define GFS2_EATYPE_LAST 4 | |
| 394 | 395 | #define GFS2_EATYPE_VALID(x) ((x) <= GFS2_EATYPE_LAST) |
| 395 | 396 | |
| 396 | 397 | #define GFS2_EAFLAG_LAST 0x01 /* last ea in block */ |