Add rmdir rule

Author: lucic71

rules/unistd/ir_unsafe.json

@@ -72,6 +72,31 @@
       "type": "i64"
     }
   },
+  "f11": {
+    "body": [
+      {
+        "text": "libc::rmdir("
+      },
+      {
+        "placeholder": {
+          "arg": 0,
+          "access": "read"
+        }
+      },
+      {
+        "text": " as *const i8)"
+      }
+    ],
+    "params": {
+      "a0": {
+        "type": "*const u8",
+        "is_unsafe_pointer": true
+      }
+    },
+    "return_type": {
+      "type": "i32"
+    }
+  },
   "f2": {
     "body": [
       {

rules/unistd/src.cpp

@@ -24,3 +24,5 @@ int f9(char *name, size_t len) { return gethostname(name, len); }
 ssize_t f10(int fd, const void *buf, size_t count) {
   return write(fd, buf, count);
 }
+
+int f11(const char *pathname) { return rmdir(pathname); }

rules/unistd/tgt_unsafe.rs

@@ -40,3 +40,7 @@ unsafe fn f9(a0: *mut u8, a1: u64) -> i32 {
 unsafe fn f10(a0: i32, a1: *const ::libc::c_void, a2: u64) -> i64 {
     libc::write(a0, a1, a2 as usize) as i64
 }
+
+unsafe fn f11(a0: *const u8) -> i32 {
+    libc::rmdir(a0 as *const i8)
+}