adding few android api 30 calls.

close rust-lang#3598.

(backport <rust-lang#3604>)
(cherry picked from commit 7de9061)

libc-test/build.rs

@@ -2075,7 +2075,7 @@ fn test_android(target: &str) {
             "__system_property_wait" => true,
 
             // Added in API level 30, but tests use level 28.
-            "mlock2" => true,
+            "memfd_create" | "mlock2" | "renameat2" | "statx" | "statx_timestamp" => true,
 
             // Added in glibc 2.25.
             "getentropy" => true,

libc-test/semver/android.txt

@@ -3469,6 +3469,7 @@ memalign
 memchr
 memcmp
 memcpy
+memfd_create
 memmem
 memmove
 memrchr
@@ -3484,6 +3485,7 @@ mknodat
 mkstemp
 mktime
 mlock
+mlock2
 mlockall
 mmap
 mmap64
@@ -3672,6 +3674,7 @@ remove
 removexattr
 rename
 renameat
+renameat2
 res_init
 rewind
 rewinddir
@@ -3797,6 +3800,8 @@ statfs
 statfs64
 statvfs
 statvfs64
+statx
+statx_timestamp
 strcasecmp
 strcasestr
 strcat

src/unix/linux_like/android/b32/mod.rs

@@ -9,6 +9,7 @@ pub type sigset_t = ::c_ulong;
 pub type socklen_t = i32;
 pub type time64_t = i64;
 pub type __u64 = ::c_ulonglong;
+pub type __s64 = ::c_longlong;
 
 s! {
     pub struct sigaction {

src/unix/linux_like/android/b64/aarch64/mod.rs

@@ -1,6 +1,7 @@
 pub type c_char = u8;
 pub type wchar_t = u32;
 pub type __u64 = ::c_ulonglong;
+pub type __s64 = ::c_longlong;
 
 s! {
     pub struct stat {

src/unix/linux_like/android/b64/riscv64/mod.rs

@@ -2,6 +2,7 @@ pub type c_char = i8;
 pub type wchar_t = u32;
 pub type greg_t = i64;
 pub type __u64 = ::c_ulonglong;
+pub type __s64 = ::c_longlong;
 
 s! {
     pub struct stat {

src/unix/linux_like/android/b64/x86_64/mod.rs

@@ -2,6 +2,7 @@ pub type c_char = i8;
 pub type wchar_t = i32;
 pub type greg_t = i64;
 pub type __u64 = ::c_ulonglong;
+pub type __s64 = ::c_longlong;
 
 s! {
     pub struct stat {

src/unix/linux_like/android/mod.rs

@@ -514,8 +514,40 @@ s! {
        pub ifr6_addr: ::in6_addr,
        pub ifr6_prefixlen: u32,
        pub ifr6_ifindex: ::c_int,
-   }
+    }
+
+    pub struct statx {
+        pub stx_mask: ::__u32,
+        pub stx_blksize: ::__u32,
+        pub stx_attributes: ::__u64,
+        pub stx_nlink: ::__u32,
+        pub stx_uid: ::__u32,
+        pub stx_gid: ::__u32,
+        pub stx_mode: ::__u16,
+        __statx_pad1: [::__u16; 1],
+        pub stx_ino: ::__u64,
+        pub stx_size: ::__u64,
+        pub stx_blocks: ::__u64,
+        pub stx_attributes_mask: ::__u64,
+        pub stx_atime: ::statx_timestamp,
+        pub stx_btime: ::statx_timestamp,
+        pub stx_ctime: ::statx_timestamp,
+        pub stx_mtime: ::statx_timestamp,
+        pub stx_rdev_major: ::__u32,
+        pub stx_rdev_minor: ::__u32,
+        pub stx_dev_major: ::__u32,
+        pub stx_dev_minor: ::__u32,
+        pub stx_mnt_id: ::__u64,
+        pub stx_dio_mem_align: ::__u32,
+        pub stx_dio_offset_align: ::__u32,
+        __statx_pad3: [::__u64; 12],
+    }
 
+    pub struct statx_timestamp {
+        pub tv_sec: ::__s64,
+        pub tv_nsec: ::__u32,
+        pub __reserved: ::__s32,
+    }
 }
 
 s_no_extra_traits! {
@@ -4169,6 +4201,22 @@ extern "C" {
     pub fn fgets_unlocked(buf: *mut ::c_char, size: ::c_int, stream: *mut ::FILE) -> *mut ::c_char;
 
     pub fn klogctl(syslog_type: ::c_int, bufp: *mut ::c_char, len: ::c_int) -> ::c_int;
+
+    pub fn memfd_create(name: *const ::c_char, flags: ::c_uint) -> ::c_int;
+    pub fn renameat2(
+        olddirfd: ::c_int,
+        oldpath: *const ::c_char,
+        newdirfd: ::c_int,
+        newpath: *const ::c_char,
+        flags: ::c_uint,
+    ) -> ::c_int;
+    pub fn statx(
+        dirfd: ::c_int,
+        pathname: *const c_char,
+        flags: ::c_int,
+        mask: ::c_uint,
+        statxbuf: *mut statx,
+    ) -> ::c_int;
 }
 
 cfg_if! {