Introduce test-program for System V standardized IPC syscalls

[aniketp]

Summary

This revision introduces test program for System V standardized system calls concerned
with creating and manipulating message queues. These system calls are categorized within
inter-process-communication audit class (as expected).

System calls in question are:

• msgget(2)
• msgsnd(2)
• msgrcv(2)
• msgctl(2)

Note:
msgctl(2) takes as argument a cmd which is a separate audit event in itself.
List of msgctl(2) audit events:

• AUE_MSGCTL [Illegal Command]
• AUE_MSGCTL_STAT
• AUE_MSGCTL_RMID
• AUE_MSGCTL_SET

For full details, please see: sys/security/audit/audit_bsm_klib.c#L248

Each of them have been treated as separate audit events. (And hence, separate tests)

Test Plan

Execute make && make install from test/sys/audit.
Execute kyua test from /usr/tests/sys/audit. All testcases should succeed.

[asomers]

tests/sys/audit/inter-process.c

124

You're sending uninitialized data here, since msgsize is 128 but only the first 15B of the message are initialized. You should send only the true length of the message.

303

s/failur/failure

379

s/failur/failure

[aniketp]

Update the test-program to send only the initialized data using msgsnd(2)

[asomers]

tests/sys/audit/inter-process.c

118

This takes the address of samplemsg and casts that to a char. I don't think that's what you want.

[aniketp]

Tweak in the msgstr_t variables' initialization