Add tests for stat(2), fstat(2), lstat(2), fstatat(2) of "fa" audit class

[aniketp]

Summary

This revision introduces a new test program, file-attribute-access corresponding to fa
audit class. This audit class has 22 + (open, openat) auditable system calls out of which 4
have been introduced in this test program.

• stat(2)
• lstat(2)
• fstat(2)
• fstatat(2)

Both success and failure modes of all the above syscalls has been tested.

Test Plan

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

[asomers]

What abut the rest of the fa audit class?

[aniketp]

I was thinking of adding these system calls in batches. Currently there are about 25 system calls in this class, so as to ease the process of reviewing, I included only the stat family to get the process started.

[asomers]

The patch does not apply cleanly. You need to rebase it.

[asomers]

My bad, nevermind.