Re: [PATCH v8 3/5] selftests/sgx: Dump enclave memory map

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On 6/10/21 2:30 AM, Jarkko Sakkinen wrote:
Often, it's useful to check whether /proc/self/maps looks sane when
dealing with memory mapped objects, especially when they are JIT'ish
dynamically constructed objects. Therefore, dump "/dev/sgx_enclave"
matching lines from the memory map in FIXTURE_SETUP().

Signed-off-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx>
---
  tools/testing/selftests/sgx/main.c | 14 ++++++++++++++
  1 file changed, 14 insertions(+)

diff --git a/tools/testing/selftests/sgx/main.c b/tools/testing/selftests/sgx/main.c
index 6da19b6bf287..14030f8b85ff 100644
--- a/tools/testing/selftests/sgx/main.c
+++ b/tools/testing/selftests/sgx/main.c
@@ -117,6 +117,8 @@ FIXTURE_SETUP(enclave)
  	Elf64_Sym *sgx_enter_enclave_sym = NULL;
  	struct vdso_symtab symtab;
  	struct encl_segment *seg;
+	char maps_line[256];
+	FILE *maps_file;
  	unsigned int i;
  	void *addr;
@@ -167,6 +169,18 @@ FIXTURE_SETUP(enclave)
  	memset(&self->run, 0, sizeof(self->run));
  	self->run.tcs = self->encl.encl_base;
+ maps_file = fopen("/proc/self/maps", "r");

I almost applied these. Does this require root access, if so,
please add logic to skip the test if non-root user runs it.

Same comments for all other paths that might require root access.

thanks,
-- Shuah



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