linux/usr
Benjamin Gray 5efb685bb3 initramfs: Check negative timestamp to prevent broken cpio archive
Similar to commit 4c9d410f32 ("initramfs: Check timestamp to prevent
broken cpio archive"), except asserts that the timestamp is
non-negative. This can happen when the KBUILD_BUILD_TIMESTAMP is a value
before UNIX epoch, which may be set when making reproducible builds that
don't want to look like they use a valid date.

While support for dates before 1970 might not be supported, this is more
about preventing undetected CPIO corruption. The printf's use a minimum
length format specifier, and will happily make the field longer than 8
characters if they need to.

Signed-off-by: Benjamin Gray <bgray@linux.ibm.com>
Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com>
Tested-by: Andrew Donnellan <ajd@linux.ibm.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2023-04-16 17:37:01 +09:00
..
dummy-include kbuild: prevent exported headers from including <stdlib.h>, <stdbool.h> 2022-05-13 10:56:10 +02:00
include Kbuild updates for v5.19 2022-05-26 12:09:50 -07:00
.gitignore .gitignore: prefix local generated files with a slash 2021-05-02 00:43:35 +09:00
default_cpio_list initramfs: add default_cpio_list, and delete -d option support 2020-01-16 00:25:22 +09:00
gen_init_cpio.c initramfs: Check negative timestamp to prevent broken cpio archive 2023-04-16 17:37:01 +09:00
gen_initramfs.sh kbuild: replace LANG=C with LC_ALL=C 2021-05-02 00:43:35 +09:00
initramfs_data.S initramfs: refactor the initramfs build rules 2020-01-16 00:26:21 +09:00
Kconfig initramfs: Remove redundant dependency of RD_ZSTD on BLK_DEV_INITRD 2021-02-24 15:12:06 +09:00
Makefile kbuild: unify cmd_copy and cmd_shipped 2022-02-14 10:37:32 +09:00