On Thu, Sep 22, 2022 at 4:36 PM cgel.zte@gmail.com wrote:

From: Xu Panda xu.panda@zte.com.cn

Not using absolute path when invoking wget can lead to serious security issues.

Reported-by: Zeal Robot zealci@zte.com.cn Signed-off-by: Xu Panda xu.panda@zte.com.cn

---

This seems mostly okay to me -- we'd be abandoning people who have wget in an unusual location, but I don't think there are many people who want to run KUnit under RISC-V, have wget in a non-standard location, and can't acquire the bios file themselves.

So this is: Reviewed-by: David Gow davidgow@google.com

However, would a patch like this make _more_ sense? It looks like (at least on Debian and Arch), the OpenSBI bios is installed as part of the appropriate qemu package anyway, into a standard location. --- diff --git a/tools/testing/kunit/qemu_configs/riscv.py b/tools/testing/kunit/qemu_configs/riscv.py index 6207be146d26..12a1d525978a 100644 --- a/tools/testing/kunit/qemu_configs/riscv.py +++ b/tools/testing/kunit/qemu_configs/riscv.py @@ -3,17 +3,13 @@ import os import os.path import sys

-GITHUB_OPENSBI_URL = 'https://github.com/qemu/qemu/raw/master/pc-bios/opensbi-riscv64-generic-fw_d...' -OPENSBI_FILE = os.path.basename(GITHUB_OPENSBI_URL) +OPENSBI_FILE = 'opensbi-riscv64-generic-fw_dynamic.bin' +OPENSBI_PATH = '/usr/share/qemu/' + OPENSBI_FILE

-if not os.path.isfile(OPENSBI_FILE): - print('\n\nOpenSBI file is not in the current working directory.\n' - 'Would you like me to download it for you from:\n' + GITHUB_OPENSBI_URL + ' ?\n') - response = input('yes/[no]: ') - if response.strip() == 'yes': - os.system('wget ' + GITHUB_OPENSBI_URL) - else: - sys.exit() +if not os.path.isfile(OPENSBI_PATH): + print('\n\nOpenSBI bios was not found in "' + OPENSBI_PATH + '".\n' + 'Please ensure that qemu-system-riscv is installed, or edit the path in "qemu_configs/riscv.py"\n') + sys.exit()

QEMU_ARCH = QemuArchParams(linux_arch='riscv', kconfig=''' @@ -29,4 +25,4 @@ CONFIG_SERIAL_EARLYCON_RISCV_SBI=y''', extra_qemu_params=[ '-machine', 'virt', '-cpu', 'rv64', - '-bios', 'opensbi-riscv64-generic-fw_dynamic.bin']) + '-bios', OPENSBI_PATH]) ---

That way, we could avoid using wget at all. (I did confirm that this is the only use of it anywhere in kunit_tool.)

The other options would be to use some python library to download it?

Thoughts? -- David

tools/testing/kunit/qemu_configs/riscv.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/kunit/qemu_configs/riscv.py b/tools/testing/kunit/qemu_configs/riscv.py index 6207be146d26..c3dcd654ca15 100644 --- a/tools/testing/kunit/qemu_configs/riscv.py +++ b/tools/testing/kunit/qemu_configs/riscv.py @@ -11,7 +11,7 @@ if not os.path.isfile(OPENSBI_FILE): 'Would you like me to download it for you from:\n' + GITHUB_OPENSBI_URL + ' ?\n') response = input('yes/[no]: ') if response.strip() == 'yes':

•           os.system('wget ' + GITHUB_OPENSBI_URL)
  

•           os.system('/usr/bin/wget ' + GITHUB_OPENSBI_URL)
    else:
            sys.exit()
  
  

-- 2.15.2

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