Auto merge of rust-lang#3034 - devnexen:missing_linux_clone_flags, r=JohnTitor

adding few more CLONE_* constant for Linux/Android.

closes rust-lang#3033.

Author: bors

libc-test/build.rs

@@ -3841,6 +3841,7 @@ fn test_linux(target: &str) {
             | "MADV_POPULATE_READ"
             | "MADV_POPULATE_WRITE"
             if musl => true,
+            "CLONE_CLEAR_SIGHAND" | "CLONE_INTO_CGROUP" => true,
 
             // kernel 6.1 minimum
             "MADV_COLLAPSE" => true,

libc-test/semver/linux-gnu.txt

@@ -32,6 +32,8 @@ BTRFS_SUPER_MAGIC
 CGROUP2_SUPER_MAGIC
 CGROUP_SUPER_MAGIC
 CLONE_NEWTIME
+CLONE_CLEAR_SIGHAND
+CLONE_INTO_CGROUP
 CODA_SUPER_MAGIC
 CRAMFS_MAGIC
 DEAD_PROCESS
@@ -666,4 +668,4 @@ getmntent_r
 putpwent
 putgrent
 execveat
-close_range
+close_range

src/unix/linux_like/linux/gnu/mod.rs

@@ -946,6 +946,8 @@ pub const ELFOSABI_ARM_AEABI: u8 = 64;
 
 // linux/sched.h
 pub const CLONE_NEWTIME: ::c_int = 0x80;
+pub const CLONE_CLEAR_SIGHAND: ::c_int = 0x100000000;
+pub const CLONE_INTO_CGROUP: ::c_int = 0x200000000;
 
 // linux/keyctl.h
 pub const KEYCTL_DH_COMPUTE: u32 = 23;