Currently, file system images created with mkfs.vfat are not
reproducible, because both the file system creation time and the
volume id are derived from the current time.
Upstream has added a patch for deriving those from SOURCE_DATE_EPOCH,
when defined, many years ago, but unfortunately there is no official
release containing that patch.
The issue [1] is 2.5 years old, so there's no reason to believe such a
release would be just around the corner.
The patch applies cleanly, and e.g. Arch Linux already uses this exact
combination of source tarball and this single patch [2], so I think
this should be ok. It certainly works for the images I've tested on.
[1] https://github.com/dosfstools/dosfstools/issues/179
[2] https://gitlab.archlinux.org/archlinux/packaging/packages/dosfstools/-/blob/main/PKGBUILD?ref_type=heads
(From OE-Core rev: bf9e6bf884bc780547d3dc88c3977c8102e1faeb)
Signed-off-by: Rasmus Villemoes <ravi@prevas.dk>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
b5b4fad3e9