PROCESSOR-SDK-AM64X: rootfs for custom image is missing /usr/bin/sudo

Hi,

William Coulter said:

Following the instructions at https://software-dl.ti.com/processor-sdk-linux-rt/esd/AM64X/07_03_00_02/exports/docs/devices/AM64X/Overview/Create_SD_Card.html#am64x-create-sd-card-with-default-images a new image was created from tisdk-default-image-am64xx-evm.tar.xz.

The documentation link you referred to talks about creating an SD card using default WIC image tisdk-default-image-am64xx-evm.wic.xz.

I followed instructions for creating SD card with custom image and made an SD card with the default image tisdk-default-image-am64xx-evm.tar.xz and without any customization. I could see /usr/bin/sudo in the file system after board booted to Linux:

root@am64xx-evm:~# uname -a
Linux am64xx-evm 5.4.106-g023faefa70 #1 SMP PREEMPT Mon Apr 12 14:19:22 UTC 2021 aarch64 aarch64 aarch64 GNU/Linux
root@am64xx-evm:~# ls /usr/bin/sudo -al
---x--x--x 1 root root 138752 Apr 12  2021 /usr/bin/sudo

So I'm not very sure about the problem you've observed. 

Regards,

Jianzhong

Hi Jianzhong,

Yes, the instructions were followed from a custom target and I just re-ran them. Please note that in my case, I'm using the RT kernel ("PREEMPT_RT" not "PREEMPT"), although it may not matter much.

The PSDK includes two versions of the default target:

1. A version with a WIC extension (this one *does* have sudo, as I show above by mounting it)
2. Another version with the XZ extension (which doe NOT have sudo). For me, any custom image created from this default XZ doesn't have sudo.

In your setup, do you see a usr/bin/sudo when you do look in the rootfs/ dorectory or search the default XZ? I don't (see screenshots below).

I'm running PSDK 7.03.00.03. 

-- Will

in RT PSDK, XZ file for default image doesn't have usr/bin/sudo:

In RT PSDK, rootfs after extracting doesn't have usr/bin/sudo:

In NON RT PSDK (since this is what you're running), XZ file also doesn't have usr/bin/sudo:

I meant PSDK 7.03.00.02, not 7.03.00.03.

Also, once I grabbed sudo from a working am64x EVM and made a custom image, everything worked.

Thanks!