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, 14 insertions, 0 deletions

diff --git a/src/legacy/cuserid.c b/src/legacy/cuserid.c
new file mode 100644
index 00000000..4e78798d
--- /dev/null
+++ b/src/legacy/cuserid.c
@@ -0,0 +1,14 @@
+#define _GNU_SOURCE
+#include <pwd.h>
+#include <stdio.h>
+#include <unistd.h>
+
+char *cuserid(char *buf)
+{
+	struct passwd pw, *ppw;
+	long pwb[256];
+	if (getpwuid_r(geteuid(), &pw, (void *)pwb, sizeof pwb, &ppw))
+		return 0;
+	snprintf(buf, L_cuserid, "%s", pw.pw_name);
+	return buf;
+}