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, 30 insertions, 0 deletions

diff --git a/src/crypt/crypt_r.c b/src/crypt/crypt_r.c
new file mode 100644
index 00000000..1c7f9cf0
--- /dev/null
+++ b/src/crypt/crypt_r.c
@@ -0,0 +1,30 @@
+#include <crypt.h>
+#include "libc.h"
+
+struct crypt_data;
+
+char *__crypt_des(const char *, const char *, char *);
+char *__crypt_md5(const char *, const char *, char *);
+char *__crypt_blowfish(const char *, const char *, char *);
+char *__crypt_sha256(const char *, const char *, char *);
+char *__crypt_sha512(const char *, const char *, char *);
+
+char *__crypt_r(const char *key, const char *salt, struct crypt_data *data)
+{
+	char *output = (char *)data;
+	if (salt[0] == '$' && salt[1] && salt[2]) {
+#if 0
+		if (salt[1] == '1' && salt[2] == '$')
+			return __crypt_md5(key, salt, output);
+#endif
+		if (salt[1] == '2' && salt[3] == '$')
+			return __crypt_blowfish(key, salt, output);
+		if (salt[1] == '5' && salt[2] == '$')
+			return __crypt_sha256(key, salt, output);
+		if (salt[1] == '6' && salt[2] == '$')
+			return __crypt_sha512(key, salt, output);
+	}
+	return __crypt_des(key, salt, output);
+}
+
+weak_alias(__crypt_r, crypt_r);