Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/third_party/rust/nix/src/sys/memfd.rs b/third_party/rust/nix/src/sys/memfd.rs
new file mode 100644
index 0000000000..9672429b31
--- /dev/null
+++ b/third_party/rust/nix/src/sys/memfd.rs
@@ -0,0 +1,20 @@
+use libc;
+use std::os::unix::io::RawFd;
+use Result;
+use errno::Errno;
+use std::ffi::CStr;
+
+libc_bitflags!(
+    pub struct MemFdCreateFlag: libc::c_uint {
+        MFD_CLOEXEC;
+        MFD_ALLOW_SEALING;
+    }
+);
+
+pub fn memfd_create(name: &CStr, flags: MemFdCreateFlag) -> Result<RawFd> {
+    let res = unsafe {
+        libc::syscall(libc::SYS_memfd_create, name.as_ptr(), flags.bits())
+    };
+
+    Errno::result(res).map(|r| r as RawFd)
+}