Add resolv

Author: lorenzleutgeb

libc-test/semver/linux.txt

@@ -4218,6 +4218,12 @@ regmatch_t
 regoff_t
 remap_file_pages
 removexattr
+res_init
+res_mkquery
+res_query
+res_querydomain
+res_search
+res_send
 rlim64_t
 rlimit64
 rtentry

src/unix/linux_like/mod.rs

@@ -2062,6 +2062,44 @@ extern "C" {
 
     pub fn getdomainname(name: *mut c_char, len: size_t) -> c_int;
     pub fn setdomainname(name: *const c_char, len: size_t) -> c_int;
+
+    pub fn res_init() -> c_int;
+    pub fn res_query(
+        dname: *const c_char,
+        class: c_int,
+        kind: c_int,
+        answer: *mut c_uchar,
+        anslen: c_int,
+    ) -> c_int;
+    pub fn res_search(
+        dname: *const c_char,
+        class: c_int,
+        kind: c_int,
+        answer: *mut c_uchar,
+        anslen: c_int,
+    ) -> c_int;
+    pub fn res_querydomain(
+        name: *const c_char,
+        domain: *const c_char,
+        class: c_int,
+        kind: c_int,
+        answer: *mut c_uchar,
+        anslen: c_int,
+    ) -> c_int;
+    pub fn res_mkquery(
+        op: c_int,
+        dname: *const c_char,
+        class: c_int,
+        kind: c_int,
+        data: *mut c_char,
+        newrr: *const c_void,
+        datalen: c_int,
+        buf: *mut c_char,
+        buflen: c_int,
+    ) -> c_int;
+    pub fn res_send(msg: *const c_char, msglen: c_int, answer: *mut c_char, anslen: c_int)
+        -> c_int;
+    // pub fn dn_comp(exp_dn: *mut c_uchar, comp_dn: *mut c_uchar, length: c_int, *mut *mut c_uchar, )
 }
 
 // LFS64 extensions