tests/include/t_paths: Test all paths, nonfatally.

This way a single failure doesn't suppress failure reports for all
the other paths to test.

Omit some needless blank lines while here.

tests/include/t_paths: /dev/ksyms requires root.

- add or adjust /* FALLTHROUGH */ where appropriate
- add __unreachable() after functions that can return but won't in
this case, and thus can't be marked __dead easily

Use correcet variable name when printing the error code.

Don't fail if open() of sysmon devices returns ENODEV. This can
occur if sysmon subcomponents are not included in the kernel and
autoloading of modules is not allowed or not supported.

PR misc/49356 remove unnecessary references to atf-c/config.h

The function included via this header is not used and is removed in
later versions of atf, so let us avoid it.

Use compiler builtins instead of atf_arch and atf_machine.

The atf_arch and atf_machine configuration variables were removed from
atf-0.19 without me realizing that some tests were querying them dir

Use compiler builtins instead of atf_arch and atf_machine.

The atf_arch and atf_machine configuration variables were removed from
atf-0.19 without me realizing that some tests were querying them directly.

Instead of reintroducing those variables, just rely on compiler builtins
as many other tests already do.

Should fix PR bin/48582.

show more ...

Switch device database to cdb(5). Rework ttyname(3) and ttyname_r(3) to
depend on new devname_r(3) as heart. Add /dev/pts magic directly to
devname(3). While it can lead to returning non-existing pat

Switch device database to cdb(5). Rework ttyname(3) and ttyname_r(3) to
depend on new devname_r(3) as heart. Add /dev/pts magic directly to
devname(3). While it can lead to returning non-existing paths, the
behavior is more consistent that way. Drop caching layer in devname(3),
it doesn't buy anything for the common case of having access to the
database. Teach devname(3) proper fallback behavior of scanning /dev.
Create both old-style and new-style database for now in /etc/rc.d/sysdb.

show more ...

Skip the test on sparc and point to PR port-sparc/45580.

Add printfs to see where TNF's qemu/sparc fails.

Define _PATH_CPUCTL.

Need root for /dev/power.

putter_fop_stat(): set st_mode to S_IFCHR.

Fixes PR #44807: something broken in stat(2).

Convert some more ATF_REQUIRE calls to ATF_CHECK.

Mark this again as expected failure.

Remove atf_tc_expect_fail(). Should be fixed.

Adjust for _PATH_CONSOLE, pointed out by njoly@.

Another proof that even the naive test cases are worth it;
expect a failure with fstat(2) and bpf(4), PR lib/44807.

Add some basic tests for fsync(2) and <paths.h>.