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Adding boot-debug.img and ramdisk-debug.img

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The two new debugging images adds additional files based on
boot.img and ramdisk.img/ramdisk-recovery.img, respectively.

File /force_debuggable is to trigger special logic in /init to load an
userdebug version of sepolicy and an additional property file from this
ramdisk to allow adb root, if the device is unlocked.

It's intentional to skip signing for boot-debug.img, as it can
only be used if the device is unlocked, where verification error
is allowed.

Those debugging images allows adb root on user build
system.img, vendor.img, product.img, etc. This can facilitate more
automated testings on user builds and is helpful to narrow down the
delta between what's being tested v.s. what's being shipped.

Bug: 126493225
Test: `make dist`, checks both boot-debug.img and ramdisk-debug.img
      are in $OUT/ and out/dist.
Test: `make dist`, checks installed-files-ramdisk-debug.{json,txt} are
       in out/dist.
Test: `system/core/mkbootimg/unpack_bootimg.py --boot_img $OUT/boot-debug.img`,
      checks the extracted out/ramdisk is as expected
Test: Run `gunzip -c ramdisk | cpio -idm` for the ramdisk extracted from
      $OUT/boot-debug.img and $OUT/boot.img, respectively.
      Then compare the root dirs of both, e.g.,
      `diff -rq --no-dereference ./ramdisk ./ramdisk-debug`
Test: `make ramdisk_debug-nodeps` and `make bootimage_debug-nodeps`

Change-Id: I30137c3caef91805d9143d404e5e4d06c0fccc30
This commit is contained in:
Bowgo Tsai
2019-03-20 17:59:52 +08:00
parent 967105ada9
commit 0013f55ef4
5 changed files with 124 additions and 0 deletions
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2
core/envsetup.mk
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@@ -225,6 +225,7 @@ TARGET_COPY_OUT_DATA := data
TARGET_COPY_OUT_ASAN := $(TARGET_COPY_OUT_DATA)/asan
TARGET_COPY_OUT_OEM := oem
TARGET_COPY_OUT_RAMDISK := ramdisk
TARGET_COPY_OUT_DEBUG_RAMDISK := debug_ramdisk
TARGET_COPY_OUT_ROOT := root
TARGET_COPY_OUT_RECOVERY := recovery
# The directory used for optional partitions depend on the BoardConfig, so
@@ -838,6 +839,7 @@ TARGET_OUT_COVERAGE := $(PRODUCT_OUT)/coverage
TARGET_RAMDISK_OUT := $(PRODUCT_OUT)/$(TARGET_COPY_OUT_RAMDISK)
TARGET_RAMDISK_OUT_UNSTRIPPED := $(TARGET_OUT_UNSTRIPPED)
TARGET_DEBUG_RAMDISK_OUT := $(PRODUCT_OUT)/$(TARGET_COPY_OUT_DEBUG_RAMDISK)
TARGET_ROOT_OUT := $(PRODUCT_OUT)/$(TARGET_COPY_OUT_ROOT)
TARGET_ROOT_OUT_BIN := $(TARGET_ROOT_OUT)/bin