| Commit message (Collapse) | Author | Age |
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As Glenn pointed out, it is useful for some protocols (e.g.,
k-exclusion protocols) to know the userspace configuration at object
creation time. This patch changes the fdso API to pass the parameter
to the object constructor, which is then in turn passed to the lock
allocater. The return code from the lock allocater is passed to
userspace in return.
This also fixes some null pointer dereferences in the FDSO code found
by the test suite in liblitmus.
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This re-enables SRP support under PSN-EDF and demonstrates how the new
locking API should be used.
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Provide a unified userspace interface for plugin-specific locking
protocols.
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Passing the object type explicitly will enable generic lock constructors.
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This fixes a bug found by liblitmus's regression test suite.
Before:
> ** LITMUS^RT test suite.
> ** Running tests for LINUX.
> ** Testing: don't open FMLP semaphores if FMLP is not supported...
> !! TEST FAILURE open_fmlp_sem(fd, 0) -> -16, Success (expected: EBUSY)
> at tests/fdso.c:21 (test_fmlp_not_active)
> ** Testing: reject invalid object descriptors... ok.
> ** Testing: reject invalid object types...
> !! TEST FAILURE od_open(0, -1, 0) -> -22, Bad file descriptor (expected: EINVAL)
> at tests/fdso.c:51 (test_invalid_obj_type)
> ** Testing: reject invalid rt_task pointers... ok.
> ** Result: 2 ok, 2 failed.
After:
> ** LITMUS^RT test suite.
> ** Running tests for LINUX.
> ** Testing: don't open FMLP semaphores if FMLP is not supported... ok.
> ** Testing: reject invalid object descriptors... ok.
> ** Testing: reject invalid object types... ok.
> ** Testing: reject invalid rt_task pointers... ok.
> ** Result: 4 ok, 0 failed.
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infrastructure
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