Update libc crate to 0.2.23

The 'libc' create got a couple of updates. This change imports the new
code and bumps the version to use.

Import subrepo libc/:libc at 7db3fd570dfb41a38fb17116e93679307178103a

2 files changed, 11 insertions, 0 deletions

diff --git a/libc/src/unix/bsd/netbsdlike/openbsdlike/mod.rs b/libc/src/unix/bsd/netbsdlike/openbsdlike/mod.rs
index 0e53ccd..b0d8128 100644
--- a/libc/src/unix/bsd/netbsdlike/openbsdlike/mod.rs
+++ b/libc/src/unix/bsd/netbsdlike/openbsdlike/mod.rs
@@ -157,6 +157,12 @@ pub const ELAST : ::c_int = 91;
 
 pub const F_DUPFD_CLOEXEC : ::c_int = 10;
 
+pub const AT_FDCWD: ::c_int = -100;
+pub const AT_EACCESS: ::c_int = 0x01;
+pub const AT_SYMLINK_NOFOLLOW: ::c_int = 0x02;
+pub const AT_SYMLINK_FOLLOW: ::c_int = 0x04;
+pub const AT_REMOVEDIR: ::c_int = 0x08;
+
 pub const RLIM_NLIMITS: ::c_int = 9;
 
 pub const SO_SNDTIMEO: ::c_int = 0x1005;
diff --git a/libc/src/unix/bsd/netbsdlike/openbsdlike/openbsd.rs b/libc/src/unix/bsd/netbsdlike/openbsdlike/openbsd.rs
index b7fed64..8b36ee5 100644
--- a/libc/src/unix/bsd/netbsdlike/openbsdlike/openbsd.rs
+++ b/libc/src/unix/bsd/netbsdlike/openbsdlike/openbsd.rs
@@ -26,3 +26,8 @@ s! {
         pub int_n_sign_posn: ::c_char,
     }
 }
+
+extern {
+    pub fn accept4(s: ::c_int, addr: *mut ::sockaddr,
+                   addrlen: *mut ::socklen_t, flags: ::c_int) -> ::c_int;
+}