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https://git.code.sf.net/p/linux-ima/ima-evm-utils
synced 2025-04-27 14:22:31 +02:00
6917e384d3
Add tests to ensure that, after applying the kernel patch 'ima: Align
ima_file_mmap() parameters with mmap_file LSM hook', the MMAP_CHECK hook
checks the protections applied by the kernel and not those requested by the
application.
Also ensure that after applying 'ima: Introduce MMAP_CHECK_REQPROT hook',
the MMAP_CHECK_REQPROT hook checks the protections requested by the
application.
Test both with the test_mmap application that by default requests the
PROT_READ protection flag. Its syntax is:
test_mmap <file> <mode>
where mode can be:
- exec: adds the PROT_EXEC protection flag to mmap()
- read_implies_exec: calls the personality() system call with
READ_IMPLIES_EXEC as the first argument before mmap()
- mprotect: adds the PROT_EXEC protection flag to a memory area in addition
to PROT_READ
- exec_on_writable: calls mmap() with PROT_EXEC on a file which has a
writable mapping
Check the different combinations of hooks/modes and ensure that a
measurement entry is found in the IMA measurement list only when it is
expected. No measurement entry should be found when only the PROT_READ
protection flag is requested or the matching policy rule has the
MMAP_CHECK_REQPROT hook and the personality() system call was called with
READ_IMPLIES_EXEC.
mprotect() with PROT_EXEC on an existing memory area protected with
PROT_READ should be denied (with an appraisal rule), regardless of the MMAP
hook specified in the policy. The same applies for mmap() with PROT_EXEC on
a file with a writable mapping.
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
30 lines
662 B
Makefile
30 lines
662 B
Makefile
check_SCRIPTS =
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TESTS = $(check_SCRIPTS)
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check_SCRIPTS += ima_hash.test sign_verify.test boot_aggregate.test \
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fsverity.test portable_signatures.test ima_policy_check.test \
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mmap_check.test
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check_PROGRAMS := test_mmap
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.PHONY: check_logs
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check_logs:
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@for log in $(TEST_LOGS); do \
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echo -e "\n***" $$log "***" ; \
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case $$log in \
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ima_hash.log | sign_verify.log ) \
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tail -3 $$log ; \
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grep "skipped" $$log && grep "skipped" $$log | wc -l ;; \
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*) \
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cat $$log ;; \
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esac ; \
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done
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clean-local:
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-rm -f *.txt *.out *.sig *.sig2
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distclean: distclean-keys
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.PHONY: distclean-keys
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distclean-keys:
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./gen-keys.sh clean
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