Add getrandom() bindings on Linux

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

@@ -967,6 +967,11 @@ extern {
                         tz: *mut ::timezone) -> ::c_int;
     pub fn statx(dirfd: ::c_int, pathname: *const c_char, flags: ::c_int,
                  mask: ::c_uint, statxbuf: *mut statx) -> ::c_int;
+    pub fn getrandom(
+        buf: *mut ::c_void,
+        buflen: ::size_t,
+        flags: ::c_uint,
+    ) -> ::ssize_t;
 }
 
 #[link(name = "util")]

src/unix/linux_like/linux/musl/b32/arm.rs

@@ -152,6 +152,14 @@ s! {
     }
 }
 
+extern {
+    pub fn getrandom(
+        buf: *mut ::c_void,
+        buflen: ::size_t,
+        flags: ::c_uint,
+    ) -> ::ssize_t;
+}
+
 pub const SIGSTKSZ: ::size_t = 8192;
 pub const MINSIGSTKSZ: ::size_t = 2048;
 

src/unix/linux_like/linux/musl/b32/powerpc.rs

@@ -155,6 +155,14 @@ s! {
     }
 }
 
+extern {
+    pub fn getrandom(
+        buf: *mut ::c_void,
+        buflen: ::size_t,
+        flags: ::c_uint,
+    ) -> ::ssize_t;
+}
+
 pub const MADV_SOFT_OFFLINE: ::c_int = 101;
 pub const SIGSTKSZ: ::size_t = 10240;
 pub const MINSIGSTKSZ: ::size_t = 4096;

src/unix/linux_like/linux/musl/b32/x86.rs

@@ -167,6 +167,14 @@ s_no_extra_traits!{
     }
 }
 
+extern {
+    pub fn getrandom(
+        buf: *mut ::c_void,
+        buflen: ::size_t,
+        flags: ::c_uint,
+    ) -> ::ssize_t;
+}
+
 cfg_if! {
     if #[cfg(feature = "extra_traits")] {
         impl PartialEq for ucontext_t {

src/unix/linux_like/linux/musl/b64/mod.rs

@@ -129,6 +129,14 @@ s! {
     }
 }
 
+extern {
+    pub fn getrandom(
+        buf: *mut ::c_void,
+        buflen: ::size_t,
+        flags: ::c_uint,
+    ) -> ::ssize_t;
+}
+
 pub const __SIZEOF_PTHREAD_RWLOCK_T: usize = 56;
 pub const __SIZEOF_PTHREAD_MUTEX_T: usize = 40;