signalling with sigsegv as one of the tests. o Teach errno_to_string() about ENOTSUPP. Obtained from: TrustedBSD Project
55 lines
2.0 KiB
Plaintext
55 lines
2.0 KiB
Plaintext
$FreeBSD$
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Inter-Process Authorization Test Suite
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Robert Watson, TrustedBSD Project
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This test suite attempts to determine the behavior of inter-process
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authorization policy present in the kernel. It analyzes a series of
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important scenarios using specifically crafted process credentials
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and a set of operations. It then reports on any divergence from the
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expected results.
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Test operations:
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ptrace cred1 attempts ptrace attach to cred2
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sighup cred1 attempts SIGHUP of cred2
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sigsegv cred1 attempts SIGSEGV of cred2
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see cred1 attempts getpriority() on cred2
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sched cred1 attempts setpriority() on cred2
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Test scenarioes:
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priv on priv root process on another root process
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priv on unpriv1 root process on a non-root process
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unpriv1 on priv non-root process on a root process
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unpriv1 on unpriv1 non-root process on a similar non-root process
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unpriv1 on unpriv2 non-root process on a different non-root process
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unpriv1 on daemon1 non-root process on a root daemon process acting with
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same non-root effective credentials
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unpriv1 on daemon2 non-root process on a root daemon process acting with
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different non-root effective credentials
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unpriv1 on setuid1 non-root process on a setuid-root process with same
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non-root real credentials
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unpriv1 on setuid2 non-root process on a setuid-root process with
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different non-root real credentials
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The credential elements supported by the test suite are:
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effective uid
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real uid
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saved uid
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P_SUGID flag
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Other untested aspects of interest include groups, as well as session
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relationship. Other test operations that might be of interest are SIGCONT,
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and SIGIO.
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The current set of tests includes some tests where normally the P_SUGID
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flag is set, but isn't in the test. The result is that some tests fail
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that may not reflect real-world software configurations. However, they
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do point to possible changes that could be made in the authorization system
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to improve resilience to failure or violation of invariants.
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These tests rely on __setugid(), a system call enabled using options
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REGRESSION.
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