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diff --git a/src/mtab.h b/src/mtab.h
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+/****************************************************************************
+ * bfs                                                                      *
+ * Copyright (C) 2017-2020 Tavian Barnes <tavianator@tavianator.com>        *
+ *                                                                          *
+ * Permission to use, copy, modify, and/or distribute this software for any *
+ * purpose with or without fee is hereby granted.                           *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES *
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF         *
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR  *
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES   *
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN    *
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF  *
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.           *
+ ****************************************************************************/
+
+/**
+ * A facade over platform-specific APIs for enumerating mounted filesystems.
+ */
+
+#ifndef BFS_MTAB_H
+#define BFS_MTAB_H
+
+#include <stdbool.h>
+
+struct bfs_stat;
+
+/**
+ * A file system mount table.
+ */
+struct bfs_mtab;
+
+/**
+ * Parse the mount table.
+ *
+ * @return
+ *         The parsed mount table, or NULL on error.
+ */
+struct bfs_mtab *bfs_mtab_parse(void);
+
+/**
+ * Determine the file system type that a file is on.
+ *
+ * @param mtab
+ *         The current mount table.
+ * @param statbuf
+ *         The bfs_stat() buffer for the file in question.
+ * @return
+ *         The type of file system containing this file, "unknown" if not known,
+ *         or NULL on error.
+ */
+const char *bfs_fstype(const struct bfs_mtab *mtab, const struct bfs_stat *statbuf);
+
+/**
+ * Check if a file could be a mount point.
+ *
+ * @param mtab
+ *         The current mount table.
+ * @param path
+ *         The path to check.
+ * @return
+ *         Whether the named file could be a mount point.
+ */
+bool bfs_might_be_mount(const struct bfs_mtab *mtab, const char *path);
+
+/**
+ * Free a mount table.
+ */
+void bfs_mtab_free(struct bfs_mtab *mtab);
+
+#endif // BFS_MTAB_H