init

.gitignore

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+.gdb_history
+*.out

filesystem_remove.c

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+#include "filesystem_remove.h"
+
+#define _XOPEN_SOURCE 500
+#include <stdio.h>
+#include <ftw.h>
+
+static
+int remove_wrapper(
+    const char * fpath,
+    const struct stat * sb,
+    int typeflag,
+    struct FTW * ftwbuf
+) {
+    if (typeflag == FTW_DNR
+    ||  typeflag == FTW_NS) {
+        return 1;
+    }
+
+    if (remove(fpath)) { return 2; }
+
+    return 0;
+}
+
+bool filesystem_remove(const char * const p) {
+    #define NOPENFD 256
+    const int result = nftw(p, remove_wrapper, NOPENFD, FTW_DEPTH | FTW_PHYS);
+    if (result) { return false; }
+
+    return true;
+    #undef NOPENFD
+}

filesystem_remove.h

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+#ifndef FILESYSTEM_REMOVE
+#define FILESYSTEM_REMOVE
+#include <stdbool.h>
+
+/* C replication of `std::filesystem::remove` of C++17
+ * Unlike standard C remove(3), it can remove recursively.
+ */
+bool filesystem_remove(const char * const p);
+
+#endif

linked_file.txt

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+testdir/ soft links to this file

test.c

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+// @BAKE gcc -o $*.out $@ filesystem_remove.c -ggdb
+#include "filesystem_remove.h"
+
+signed main(void) {
+    return !filesystem_remove("testdir/");
+}

testdir/file.txt

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+this is a text file with contents

testdir/subdir/comment.txt

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+this is a comment

testdir/subdir/link

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+../../linked_file.txt

testdir/subdir/note.txt

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+this is a note