critical impact:

msemaphore structure - different size and alignment (CrCh107)

Problem description

The size and alignment requirements for the msemaphore data structure are different on Tru64 UNIX and HP-UX.

The msemaphore structure is used by the msem_init, msem_lock, msem_unlock, and msem_remove functions to perform semaphore operations. On Tru64 UNIX, the msemaphore structure is 8 bytes; on HP-UX, 16 bytes. The HP-UX implementation also requires 16 byte alignment.

Identifiers

msemaphore

See also

• Background information on threads impacts
• msem_init(3)
• msem_lock(3)
• msem_remove(3)
• msem_unlock(3)

Solution description

Review the applicable manpages and code.

Applications that use the msemaphore data structure might not work correctly, depending on how the structure is used. Review the applicable manpages and code to determine how to resolve the issue.

See also

• msem_init(2)
• msem_lock(2)
• msem_remove(2)
• msem_unlock(2)

Problem summary