System V standardized IPC syscalls for manipulating shared memory segments

[aniketp]

Summary

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

System calls in question are:

• shmget(2)
• shmat(2)
• shmdt(2)
• shmctl(2)

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

• AUE_SHMCTL [Illegal Command]
• AUE_SHMCTL_STAT
• AUE_SHMCTL_RMID
• AUE_SHMCTL_SET

For full details, please see: sys/security/audit/audit_bsm_klib.c#L113

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

459

This line fails to compile for 32-bit architectures. You should cast to intptr_t instead of int.

[aniketp]

Replace int with intptr_t for ATF_REQUIRE statements of shmat(2) and shmdt(2)

[asomers]

tests/sys/audit/inter-process.c

463

You missed one. FYI: you can compile test yourself by doing "ARCH=i386 TARGET_ARCH=i386 make -jwhatever buildworld".

[aniketp]

Remove (int)addr from regex it is not required (We already have the shmid to match against)