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, 8 insertions, 0 deletions

diff --git a/src/linux/prlimit.c b/src/linux/prlimit.c
new file mode 100644
index 00000000..b9dbb446
--- /dev/null
+++ b/src/linux/prlimit.c
@@ -0,0 +1,8 @@
+#include <unistd.h>
+#include <sys/resource.h>
+#include "syscall.h"
+
+int prlimit(pid_t pid, int resource, const struct rlimit *new_limit, struct rlimit *old_limit)
+{
+	return syscall(SYS_prlimit64, pid, resource, new_limit, old_limit);
+}