cleanup src/linux and src/misc trees, etc.

previously, it was pretty much random which one of these trees a given
function appeared in. they have now been organized into:

src/linux: non-POSIX linux syscalls (possibly shard with other nixen)
src/legacy: various obsolete/legacy functions, mostly wrappers
src/misc: still mostly uncategorized; some misc POSIX, some nonstd
src/crypt: crypt hash functions

further cleanup will be done later.

1 files changed, 12 insertions, 0 deletions

diff --git a/src/legacy/ftw.c b/src/legacy/ftw.c
new file mode 100644
index 00000000..0429aba4
--- /dev/null
+++ b/src/legacy/ftw.c
@@ -0,0 +1,12 @@
+#include <ftw.h>
+#include "libc.h"
+
+int ftw(const char *path, int (*fn)(const char *, const struct stat *, int), int fd_limit)
+{
+	/* The following cast assumes that calling a function with one
+	 * argument more than it needs behaves as expected. This is
+	 * actually undefined, but works on all real-world machines. */
+	return nftw(path, (int (*)())fn, fd_limit, FTW_PHYS);
+}
+
+LFS64(ftw);