linux: add GRND_INSECURE constant

This is available on kernels ≥5.6 and was added to glibc in 2.32.

Author: zx2c4

libc-test/build.rs

@@ -1728,6 +1728,9 @@ fn test_android(target: &str) {
             // linux 5.12 min
             "MPOL_F_NUMA_BALANCING" => true,
 
+            // GRND_INSECURE was added in platform-tools-30.0.0
+            "GRND_INSECURE" => true,
+
             _ => false,
         }
     });
@@ -3317,6 +3320,9 @@ fn test_linux(target: &str) {
             // linux 5.17 min
             "PR_SET_VMA" | "PR_SET_VMA_ANON_NAME" => true,
 
+            // GRND_INSECURE was added in glibc-2.32
+            "GRND_INSECURE" => true,
+
             _ => false,
         }
     });

libc-test/semver/android.txt

@@ -661,6 +661,7 @@ GENL_NAMSIZ
 GENL_UNS_ADMIN_PERM
 GRND_NONBLOCK
 GRND_RANDOM
+GRND_INSECURE
 GRPQUOTA
 HPFS_SUPER_MAGIC
 HUGETLBFS_MAGIC

libc-test/semver/linux.txt

@@ -649,6 +649,7 @@ GLOB_NOSORT
 GLOB_NOSPACE
 GRND_NONBLOCK
 GRND_RANDOM
+GRND_INSECURE
 IBSHIFT
 IFA_ADDRESS
 IFA_ANYCAST

src/unix/linux_like/android/mod.rs

@@ -1792,6 +1792,7 @@ pub const NETLINK_GET_STRICT_CHK: ::c_int = 12;
 
 pub const GRND_NONBLOCK: ::c_uint = 0x0001;
 pub const GRND_RANDOM: ::c_uint = 0x0002;
+pub const GRND_INSECURE: ::c_uint = 0x0004;
 
 pub const SECCOMP_MODE_DISABLED: ::c_uint = 0;
 pub const SECCOMP_MODE_STRICT: ::c_uint = 1;

src/unix/linux_like/linux/mod.rs

@@ -1781,6 +1781,7 @@ pub const PR_SET_VMA_ANON_NAME: ::c_int = 0;
 
 pub const GRND_NONBLOCK: ::c_uint = 0x0001;
 pub const GRND_RANDOM: ::c_uint = 0x0002;
+pub const GRND_INSECURE: ::c_uint = 0x0004;
 
 pub const SECCOMP_MODE_DISABLED: ::c_uint = 0;
 pub const SECCOMP_MODE_STRICT: ::c_uint = 1;