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| author |   Robin H. Johnson <robbat2@gentoo.org> | 2022-12-04 21:35:34 -0800 |
|---|---|---|
| committer | Robin H. Johnson <robbat2@gentoo.org> | 2022-12-04 21:36:21 -0800 |
| commit | 19b45d085c9fe12820eaa5d89eb9469a8d8b3bb3 (patch) | |
| tree | d0f93fee86a786a6f26ac71c54771cd4ca6985ee /sys-boot | |
| parent | sci-physics/bullet: keyword 3.21 for ~loong (diff) | |
| download | gentoo-19b45d085c9fe12820eaa5d89eb9469a8d8b3bb3.tar.gz gentoo-19b45d085c9fe12820eaa5d89eb9469a8d8b3bb3.tar.bz2 gentoo-19b45d085c9fe12820eaa5d89eb9469a8d8b3bb3.zip | |
sys-boot/mbr-gpt: add safety check
If the compiler/linker/objdump options make the mbr too large, bail out,
so nobody accidently wipes out the start of their drives with a large
MBR.
Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
Diffstat (limited to 'sys-boot')
| -rw-r--r-- | sys-boot/mbr-gpt/mbr-gpt-0.0.1-r1.ebuild | 5 | ||||
| -rw-r--r-- | sys-boot/mbr-gpt/mbr-gpt-0.0.1-r2.ebuild | 7 |
2 files changed, 11 insertions, 1 deletions
diff --git a/sys-boot/mbr-gpt/mbr-gpt-0.0.1-r1.ebuild b/sys-boot/mbr-gpt/mbr-gpt-0.0.1-r1.ebuild index 3073a1e1cfed..1b062d5e5648 100644 --- a/sys-boot/mbr-gpt/mbr-gpt-0.0.1-r1.ebuild +++ b/sys-boot/mbr-gpt/mbr-gpt-0.0.1-r1.ebuild @@ -44,6 +44,11 @@ src_prepare() { src_compile() { emake CC="$(tc-getCC)" + # validate the size, it MUST fit into an MBR (440 bytes!) + size=$(stat --printf='%s' mbr) + if test $size -gt 440; then + die "Compiled MBR is too large! Must be at most 440 bytes, was $size" + fi } src_install() { diff --git a/sys-boot/mbr-gpt/mbr-gpt-0.0.1-r2.ebuild b/sys-boot/mbr-gpt/mbr-gpt-0.0.1-r2.ebuild index df636e06b770..9359c8200a24 100644 --- a/sys-boot/mbr-gpt/mbr-gpt-0.0.1-r2.ebuild +++ b/sys-boot/mbr-gpt/mbr-gpt-0.0.1-r2.ebuild @@ -27,7 +27,7 @@ QA_PRESTRIPPED="${QA_WX_LOAD}" QA_FLAGS_IGNORED="${QA_WX_LOAD}" # Don't strip it either; this binary reboots your host! -RESTRICT="binchecks strip" +RESTRICT="strip" src_prepare() { default @@ -46,6 +46,11 @@ src_prepare() { src_compile() { emake CC="$(tc-getCC)" + # validate the size, it MUST fit into an MBR (440 bytes!) + size=$(stat --printf='%s' mbr) + if test $size -gt 440; then + die "Compiled MBR is too large! Must be at most 440 bytes, was $size" + fi } src_install() { |