diff options
| author | Dean Deng <deandeng@google.com> | 2021-04-16 17:52:12 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2021-04-16 17:56:16 -0700 |
| commit | 0c3e8daf503e011f0ef3e2a1c6d8b6ffd946acab (patch) | |
| tree | 31e2eb139d91d463a0468f24d24832783bca698e /pkg/sentry/fsimpl | |
| parent | ee45334f147c9d5ff75d10c619c9c99ce4ba51ca (diff) | |
Allow runsc to generate coverage reports.
Add a coverage-report flag that will cause the sandbox to generate a coverage
report (with suffix .cov) in the debug log directory upon exiting. For the
report to be generated, runsc must have been built with the following Bazel
flags: `--collect_code_coverage --instrumentation_filter=...`.
With coverage reports, we should be able to aggregate results across all tests
to surface code coverage statistics for the project as a whole.
The report is simply a text file with each line representing a covered block
as `file:start_line.start_col,end_line.end_col`. Note that this is similar to
the format of coverage reports generated with `go test -coverprofile`,
although we omit the count and number of statements, which are not useful for
us.
Some simple ways of getting coverage reports:
bazel test <some_test> --collect_code_coverage \
--instrumentation_filter=//pkg/...
bazel build //runsc --collect_code_coverage \
--instrumentation_filter=//pkg/...
runsc -coverage-report=dir/ <other_flags> do ...
PiperOrigin-RevId: 368952911
Diffstat (limited to 'pkg/sentry/fsimpl')
| -rw-r--r-- | pkg/sentry/fsimpl/sys/sys.go | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/pkg/sentry/fsimpl/sys/sys.go b/pkg/sentry/fsimpl/sys/sys.go index 1d9280dae..14eb10dcd 100644 --- a/pkg/sentry/fsimpl/sys/sys.go +++ b/pkg/sentry/fsimpl/sys/sys.go @@ -122,11 +122,11 @@ func cpuDir(ctx context.Context, fs *filesystem, creds *auth.Credentials) kernfs } func kernelDir(ctx context.Context, fs *filesystem, creds *auth.Credentials) kernfs.Inode { - // If kcov is available, set up /sys/kernel/debug/kcov. Technically, debugfs - // should be mounted at debug/, but for our purposes, it is sufficient to - // keep it in sys. + // Set up /sys/kernel/debug/kcov. Technically, debugfs should be + // mounted at debug/, but for our purposes, it is sufficient to keep it + // in sys. var children map[string]kernfs.Inode - if coverage.KcovAvailable() { + if coverage.KcovSupported() { log.Debugf("Set up /sys/kernel/debug/kcov") children = map[string]kernfs.Inode{ "debug": fs.newDir(ctx, creds, linux.FileMode(0700), map[string]kernfs.Inode{ |