Show .pprof dir, enable profile debug output

fs.go

@@ -110,7 +110,8 @@ func (kwfs KeywhizFs) metricsJSON() []byte {
 
 func (kwfs KeywhizFs) profile(name string) []byte {
 	var b bytes.Buffer
-	err := pprof.Lookup(name).WriteTo(&b, 0)
+	// Set "1" to enable human-readable debug output
+	err := pprof.Lookup(name).WriteTo(&b, 1)
 	if err != nil {
 		kwfs.Warnf("Error writing profile: %v", err)
 	}
@@ -332,6 +333,7 @@ func (kwfs KeywhizFs) openDir(name string, context *fuse.Context) (stream []fuse
 		entries = kwfs.secretsDirListing(
 			fuse.DirEntry{Name: ".clear_cache", Mode: fuse.S_IFREG},
 			fuse.DirEntry{Name: ".json", Mode: fuse.S_IFDIR},
+			fuse.DirEntry{Name: ".pprof", Mode: fuse.S_IFDIR},
 			fuse.DirEntry{Name: ".running", Mode: fuse.S_IFREG},
 			fuse.DirEntry{Name: ".version", Mode: fuse.S_IFREG})
 	case ".json":

fs_test.go

@@ -66,6 +66,7 @@ func (suite *FsTestSuite) TestSpecialFileAttrs() {
 		{".running", -1, 0444 | fuse.S_IFREG, true},
 		{".clear_cache", 0, 0440 | fuse.S_IFREG, false},
 		{".json", 4096, 0700 | fuse.S_IFDIR, false},
+		{".pprof", 4096, 0700 | fuse.S_IFDIR, false},
 		{".json/secret", 4096, 0700 | fuse.S_IFDIR, false},
 		{".json/secrets", -1, 0400 | fuse.S_IFREG, true},
 	}
@@ -250,6 +251,7 @@ func (suite *FsTestSuite) TestOpenDir() {
 				".running":     true,
 				".clear_cache": true,
 				".json":        false,
+				".pprof":       false,
 				"General_Password..0be68f903f8b7d86": true,
 				"Nobody_PgPass":                      true,
 			},