8c2bd90b19
Added `setpriv` in `util-linux` which requires `libcap-ng` to be updated as well for it work. Android 7 and some Android devices 8 do not support ambient capabilities and will return `activate capabilities: Invalid argument` when running `setpriv`. strace shows `"prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_IS_SET, CAP_CHOWN, 0, 0) = -1 EINVAL (Invalid argument)"` This was an issue with `libcap-ng` where support for `PR_CAP_AMBIENT` was checked at compile time, so `setpriv` only worked on Android > `7`/`8` when `capng_apply()` was called. `4.3 kernel PR_CAP_AMBIENT` https://github.com/util-linux/util-linux/blob/v2.37.1/sys-utils/setpriv.c#L1010 https://github.com/stevegrubb/libcap-ng/blob/v0.8.2/src/cap-ng.c#L59 https://github.com/stevegrubb/libcap-ng/blob/v0.8.2/src/cap-ng.c#L716 https://source.android.com/devices/architecture/kernel/android-common This has been fixed in `libcap-ng` by checking `PR_CAP_AMBIENT` at runtime with `187ed535`. `libcap-ng` `0.8.3` has not been released yet and so we use a pre release version `0.8.3~pre1`. https://github.com/stevegrubb/libcap-ng/issues/28 https://github.com/stevegrubb/libcap-ng/commit/187ed535 |
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| build.sh | ||