Update libc crate to 0.2.47

This change updates the libc crate to version 0.2.47.

Import subrepo libc/:libc at ce1dfcbf81bd74662b5cd02a9214818a0bfbbffa

20 files changed, 234 insertions, 32 deletions

diff --git a/libc/Cargo.lock b/libc/Cargo.lock
index c15eee4..fb3c107 100644
--- a/libc/Cargo.lock
+++ b/libc/Cargo.lock
@@ -33,7 +33,7 @@ version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "num-traits 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.84 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -69,12 +69,12 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.45"
+version = "0.2.46"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "libc"
-version = "0.2.46"
+version = "0.2.47"
 dependencies = [
  "rustc-std-workspace-core 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -84,7 +84,7 @@ name = "libc-test"
 version = "0.1.0"
 dependencies = [
  "ctest 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.46",
+ "libc 0.2.47",
 ]
 
 [[package]]
@@ -126,15 +126,30 @@ dependencies = [
 
 [[package]]
 name = "rand"
-version = "0.4.3"
+version = "0.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.45 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.46 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
+name = "rand_core"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "rdrand"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rand_core 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
 name = "rustc-std-workspace-core"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -180,12 +195,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.23 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.24 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "serde_json"
-version = "1.0.34"
+version = "1.0.35"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "itoa 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -195,7 +210,7 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "0.15.23"
+version = "0.15.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.24 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -208,7 +223,7 @@ name = "syntex_errors"
 version = "0.59.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.45 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.46 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.84 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.84 (registry+https://github.com/rust-lang/crates.io-index)",
  "syntex_pos 0.59.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -235,7 +250,7 @@ dependencies = [
  "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.84 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.84 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)",
  "syntex_errors 0.59.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "syntex_pos 0.59.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -295,13 +310,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "3dcaa9ae7725d12cdb85b3ad99a434db70b468c09ded17e012d86b5c1010f7a7"
 "checksum itoa 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "1306f3464951f30e30d12373d31c79fbd52d236e5e896fd92f96ec7babbbe60b"
 "checksum kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
-"checksum libc 0.2.45 (registry+https://github.com/rust-lang/crates.io-index)" = "2d2857ec59fadc0773853c664d2d18e7198e83883e7060b63c924cb077bd5c74"
+"checksum libc 0.2.46 (registry+https://github.com/rust-lang/crates.io-index)" = "023a4cd09b2ff695f9734c1934145a315594b7986398496841c7031a5a1bbdbd"
 "checksum log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "e19e8d5c34a3e0e2223db8e060f9e8264aeeb5c5fc64a4ee9965c062211c024b"
 "checksum log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c84ec4b527950aa83a329754b01dbe3f58361d1c5efacd1f6d68c494d08a17c6"
 "checksum num-traits 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "0b3a5d7cc97d6d30d8b9bc8fa19bf45349ffe46241e8816f50f62f6d6aaabee1"
 "checksum proc-macro2 0.4.24 (registry+https://github.com/rust-lang/crates.io-index)" = "77619697826f31a02ae974457af0b29b723e5619e113e9397b8b82c6bd253f09"
 "checksum quote 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)" = "53fa22a1994bd0f9372d7a816207d8a2677ad0325b073f5c5332760f0fb62b5c"
-"checksum rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8356f47b32624fef5b3301c1be97e5944ecdd595409cc5da11d05f211db6cfbd"
+"checksum rand 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)" = "dee497e66d8d76bf08ce20c8d36e16f93749ab0bf89975b4f8ae5cee660c2da2"
+"checksum rand_core 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0905b6b7079ec73b314d4c748701f6931eb79fd97c668caa3f1899b22b32c6db"
+"checksum rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "678054eb77286b51581ba43620cc911abf02758c91f93f479767aed0f90458b2"
 "checksum rustc-std-workspace-core 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1956f5517128a2b6f23ab2dadf1a976f4f5b27962e7724c2bf3d45e539ec098c"
 "checksum rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
 "checksum ryu 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "eb9e9b8cde282a9fe6a42dd4681319bfb63f121b8a8ee9439c6f4107e58a46f7"
@@ -309,8 +326,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
 "checksum serde 1.0.84 (registry+https://github.com/rust-lang/crates.io-index)" = "0e732ed5a5592c17d961555e3b552985baf98d50ce418b7b655f31f6ba7eb1b7"
 "checksum serde_derive 1.0.84 (registry+https://github.com/rust-lang/crates.io-index)" = "b4d6115a3ca25c224e409185325afc16a0d5aaaabc15c42b09587d6f1ba39a5b"
-"checksum serde_json 1.0.34 (registry+https://github.com/rust-lang/crates.io-index)" = "bdf540260cfee6da923831f4776ddc495ada940c30117977c70f1313a6130545"
-"checksum syn 0.15.23 (registry+https://github.com/rust-lang/crates.io-index)" = "9545a6a093a3f0bd59adb472700acc08cad3776f860f16a897dfce8c88721cbc"
+"checksum serde_json 1.0.35 (registry+https://github.com/rust-lang/crates.io-index)" = "dfb1277d4d0563e4593e0b8b5d23d744d277b55d2bc0bf1c38d0d8a6589d38aa"
+"checksum syn 0.15.24 (registry+https://github.com/rust-lang/crates.io-index)" = "734ecc29cd36e8123850d9bf21dfd62ef8300aaa8f879aabaa899721808be37c"
 "checksum syntex_errors 0.59.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3133289179676c9f5c5b2845bf5a2e127769f4889fcbada43035ef6bd662605e"
 "checksum syntex_pos 0.59.1 (registry+https://github.com/rust-lang/crates.io-index)" = "30ab669fa003d208c681f874bbc76d91cc3d32550d16b5d9d2087cf477316470"
 "checksum syntex_syntax 0.59.1 (registry+https://github.com/rust-lang/crates.io-index)" = "03815b9f04d95828770d9c974aa39c6e1f6ef3114eb77a3ce09008a0d15dd142"
diff --git a/libc/Cargo.toml b/libc/Cargo.toml
index f7bf9f5..1d61dad 100644
--- a/libc/Cargo.toml
+++ b/libc/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "libc"
-version = "0.2.46"
+version = "0.2.47"
 authors = ["The Rust Project Developers"]
 license = "MIT OR Apache-2.0"
 readme = "README.md"
diff --git a/libc/libc-test/build.rs b/libc/libc-test/build.rs
index ffab452..7606800 100644
--- a/libc/libc-test/build.rs
+++ b/libc/libc-test/build.rs
@@ -341,7 +341,6 @@ fn main() {
         cfg.header("mqueue.h");
         cfg.header("ufs/ufs/quota.h");
         cfg.header("pthread_np.h");
-        cfg.header("sys/ioctl_compat.h");
         cfg.header("sys/rtprio.h");
     }
 
@@ -858,6 +857,10 @@ fn main() {
             // to be removed now
             "system" | "ptrace" if ios => true,
 
+            // Removed in OpenBSD 6.5
+            // https://marc.info/?l=openbsd-cvs&m=154723400730318
+            "mincore" if openbsd => true,
+
             _ => false,
         }
     });
diff --git a/libc/src/redox/mod.rs b/libc/src/redox/mod.rs
index 9f68632..8dabd90 100644
--- a/libc/src/redox/mod.rs
+++ b/libc/src/redox/mod.rs
@@ -1,4 +1,3 @@
-
 pub type int8_t = i8;
 pub type int16_t = i16;
 pub type int32_t = i32;
@@ -31,18 +30,66 @@ pub type c_char = i8;
 pub type c_long = i64;
 pub type c_ulong = u64;
 
-pub type wchar_t = i16;
+pub type wchar_t = i32;
+pub type wint_t = u32;
+pub type wctype_t = i64;
 
+pub type regoff_t = size_t;
 pub type off_t = c_long;
-pub type mode_t = u16;
-pub type time_t = i64;
-pub type pid_t = usize;
-pub type gid_t = usize;
-pub type uid_t = usize;
+pub type mode_t = c_int;
+pub type time_t = c_long;
+pub type pid_t = c_int;
+pub type id_t = c_uint;
+pub type gid_t = c_int;
+pub type uid_t = c_int;
+pub type dev_t = c_long;
+pub type ino_t = c_ulong;
+pub type nlink_t = c_ulong;
+pub type blksize_t = c_long;
+pub type blkcnt_t = c_ulong;
+
+pub type fsblkcnt_t = c_ulong;
+pub type fsfilcnt_t = c_ulong;
+
+pub type useconds_t = c_uint;
+pub type suseconds_t = c_int;
 
-pub type suseconds_t = i64;
+pub type clock_t = c_long;
+pub type clockid_t = c_int;
+pub type timer_t = *mut c_void;
+
+pub type nfds_t = c_ulong;
 
 s! {
+    pub struct fd_set {
+        fds_bits: [::c_ulong; FD_SETSIZE / ULONG_SIZE],
+    }
+
+    pub struct pollfd {
+        pub fd: ::c_int,
+        pub events: ::c_short,
+        pub revents: ::c_short,
+    }
+
+    pub struct stat {
+        pub st_dev: ::dev_t,
+        pub st_ino: ::ino_t,
+        pub st_nlink: ::nlink_t,
+        pub st_mode: ::mode_t,
+        pub st_uid: ::uid_t,
+        pub st_gid: ::gid_t,
+        pub st_rdev: ::dev_t,
+        pub st_size: ::off_t,
+        pub st_blksize: ::blksize_t,
+        pub st_blocks: ::blkcnt_t,
+
+        pub st_atime: ::timespec,
+        pub st_mtime: ::timespec,
+        pub st_ctime: ::timespec,
+
+        _pad: [c_char; 24],
+    }
+
     pub struct timeval {
         pub tv_sec: time_t,
         pub tv_usec: suseconds_t,
@@ -64,6 +111,27 @@ pub const STDERR_FILENO: ::c_int = 2;
 pub const EXIT_FAILURE: ::c_int = 1;
 pub const EXIT_SUCCESS: ::c_int = 0;
 
+pub const FD_SETSIZE: usize = 1024;
+
+pub const MAP_SHARED: ::c_int = 1;
+pub const MAP_PRIVATE: ::c_int = 2;
+pub const MAP_ANONYMOUS: ::c_int = 4;
+pub const MAP_ANON: ::c_int = MAP_ANONYMOUS;
+
+pub const MAP_FAILED: *mut ::c_void = !0 as *mut ::c_void;
+
+pub const POLLIN: ::c_short = 0x001;
+pub const POLLPRI: ::c_short = 0x002;
+pub const POLLOUT: ::c_short = 0x004;
+pub const POLLERR: ::c_short = 0x008;
+pub const POLLHUP: ::c_short = 0x010;
+pub const POLLNVAL: ::c_short = 0x020;
+
+pub const PROT_NONE: ::c_int = 0;
+pub const PROT_EXEC: ::c_int = 1;
+pub const PROT_WRITE: ::c_int = 2;
+pub const PROT_READ: ::c_int = 4;
+
 pub const S_ISUID: ::c_int = 0x800;
 pub const S_ISGID: ::c_int = 0x400;
 pub const S_ISVTX: ::c_int = 0x200;
@@ -98,6 +166,8 @@ pub const F_SETFD: ::c_int = 2;
 pub const F_GETFL: ::c_int = 3;
 pub const F_SETFL: ::c_int = 4;
 
+pub const FD_CLOEXEC: ::c_int =   0x0100_0000;
+
 pub const O_RDONLY: ::c_int =     0x0001_0000;
 pub const O_WRONLY: ::c_int =     0x0002_0000;
 pub const O_RDWR: ::c_int =       0x0003_0000;
@@ -152,6 +222,17 @@ pub const SIGSYS:    ::c_int = 31;
 pub enum FILE {}
 pub enum fpos_t {} // TODO: fill this out with a struct
 
+// intentionally not public, only used for fd_set
+cfg_if! {
+    if #[cfg(target_pointer_width = "32")] {
+        const ULONG_SIZE: usize = 32;
+    } else if #[cfg(target_pointer_width = "64")] {
+        const ULONG_SIZE: usize = 64;
+    } else {
+        // Unknown target_pointer_width
+    }
+}
+
 extern {
     pub fn isalnum(c: c_int) -> c_int;
     pub fn isalpha(c: c_int) -> c_int;
@@ -262,9 +343,22 @@ extern {
     pub fn close(fd: ::c_int) -> ::c_int;
     pub fn fchown(fd: ::c_int, uid: ::uid_t, gid: ::gid_t) -> ::c_int;
     pub fn fcntl(fd: ::c_int, cmd: ::c_int, ...) -> ::c_int;
+    pub fn fstat(fd: ::c_int, buf: *mut stat) -> ::c_int;
+    pub fn fsync(fd: ::c_int) -> ::c_int;
     pub fn gethostname(name: *mut ::c_char, len: ::size_t) -> ::c_int;
     pub fn getpid() -> pid_t;
     pub fn memalign(align: ::size_t, size: ::size_t) -> *mut ::c_void;
+    pub fn mmap(addr: *mut ::c_void,
+         len: ::size_t,
+         prot: ::c_int,
+         flags: ::c_int,
+         fd: ::c_int,
+         offset: off_t)
+         -> *mut ::c_void;
+    pub fn mprotect(addr: *mut ::c_void, len: ::size_t, prot: ::c_int)
+                    -> ::c_int;
+    pub fn munmap(addr: *mut ::c_void, len: ::size_t) -> ::c_int;
+    pub fn poll(fds: *mut pollfd, nfds: nfds_t, timeout: ::c_int) -> ::c_int;
     pub fn read(fd: ::c_int, buf: *mut ::c_void, count: ::size_t) -> ::ssize_t;
     pub fn setenv(name: *const c_char, val: *const c_char, overwrite: ::c_int)
                   -> ::c_int;
diff --git a/libc/src/unix/bsd/apple/mod.rs b/libc/src/unix/bsd/apple/mod.rs
index 3d9dd94..13da82c 100644
--- a/libc/src/unix/bsd/apple/mod.rs
+++ b/libc/src/unix/bsd/apple/mod.rs
@@ -2659,6 +2659,7 @@ extern {
         fd: ::c_int,
         newfd: ::c_int,
     ) -> ::c_int;
+    pub fn uname(buf: *mut ::utsname) -> ::c_int;
 }
 
 cfg_if! {
diff --git a/libc/src/unix/bsd/freebsdlike/dragonfly/mod.rs b/libc/src/unix/bsd/freebsdlike/dragonfly/mod.rs
index 0414380..41b6956 100644
--- a/libc/src/unix/bsd/freebsdlike/dragonfly/mod.rs
+++ b/libc/src/unix/bsd/freebsdlike/dragonfly/mod.rs
@@ -801,4 +801,5 @@ extern {
 
     pub fn statfs(path: *const ::c_char, buf: *mut statfs) -> ::c_int;
     pub fn fstatfs(fd: ::c_int, buf: *mut statfs) -> ::c_int;
+    pub fn uname(buf: *mut ::utsname) -> ::c_int;
 }
diff --git a/libc/src/unix/bsd/freebsdlike/freebsd/mod.rs b/libc/src/unix/bsd/freebsdlike/freebsd/mod.rs
index 03b19eb..878deea 100644
--- a/libc/src/unix/bsd/freebsdlike/freebsd/mod.rs
+++ b/libc/src/unix/bsd/freebsdlike/freebsd/mod.rs
@@ -447,6 +447,19 @@ pub const TIOCSIG: ::c_uint = 0x2004745f;
 pub const TIOCM_DCD: ::c_int = 0x40;
 pub const H4DISC: ::c_int = 0x7;
 
+pub const FIONCLEX: ::c_ulong = 0x20006602;
+pub const FIONREAD: ::c_ulong = 0x4004667f;
+pub const FIOASYNC: ::c_ulong = 0x8004667d;
+pub const FIOSETOWN: ::c_ulong = 0x8004667c;
+pub const FIOGETOWN: ::c_ulong = 0x4004667b;
+pub const FIODTYPE: ::c_ulong = 0x4004667a;
+pub const FIOGETLBA: ::c_ulong = 0x40046679;
+pub const FIODGNAME: ::c_ulong = 0x80106678;
+pub const FIONWRITE: ::c_ulong = 0x40046677;
+pub const FIONSPACE: ::c_ulong = 0x40046676;
+pub const FIOSEEKDATA: ::c_ulong = 0xc0086661;
+pub const FIOSEEKHOLE: ::c_ulong = 0xc0086662;
+
 pub const JAIL_API_VERSION: u32 = 2;
 pub const JAIL_CREATE: ::c_int = 0x01;
 pub const JAIL_UPDATE: ::c_int = 0x02;
@@ -949,6 +962,12 @@ pub const UF_READONLY:  ::c_ulong = 0x00001000;
 pub const UF_HIDDEN:    ::c_ulong = 0x00008000;
 pub const SF_SNAPSHOT:  ::c_ulong = 0x00200000;
 
+f! {
+    pub fn uname(buf: *mut ::utsname) -> ::c_int {
+        __xuname(256, buf as *mut ::c_void)
+    }
+}
+
 extern {
     pub fn __error() -> *mut ::c_int;
 
@@ -1135,6 +1154,7 @@ extern {
     pub fn fstatfs(fd: ::c_int, buf: *mut statfs) -> ::c_int;
 
     pub fn dup3(src: ::c_int, dst: ::c_int, flags: ::c_int) -> ::c_int;
+    pub fn __xuname(nmln: ::c_int, buf: *mut ::c_void) -> ::c_int;
 }
 
 #[link(name = "util")]
diff --git a/libc/src/unix/bsd/netbsdlike/mod.rs b/libc/src/unix/bsd/netbsdlike/mod.rs
index abd014c..15f84d9 100644
--- a/libc/src/unix/bsd/netbsdlike/mod.rs
+++ b/libc/src/unix/bsd/netbsdlike/mod.rs
@@ -676,6 +676,7 @@ extern {
                    -> ::c_int;
     pub fn getdomainname(name: *mut ::c_char, len: ::size_t) -> ::c_int;
     pub fn setdomainname(name: *const ::c_char, len: ::size_t) -> ::c_int;
+    pub fn uname(buf: *mut ::utsname) -> ::c_int;
 }
 
 cfg_if! {
diff --git a/libc/src/unix/bsd/netbsdlike/netbsd/mod.rs b/libc/src/unix/bsd/netbsdlike/netbsd/mod.rs
index 9c8173f..760582c 100644
--- a/libc/src/unix/bsd/netbsdlike/netbsd/mod.rs
+++ b/libc/src/unix/bsd/netbsdlike/netbsd/mod.rs
@@ -987,6 +987,20 @@ pub const CHWFLOW: ::tcflag_t = ::MDMBUF | ::CRTSCTS | ::CDTRCTS;
 pub const SOCK_CLOEXEC: ::c_int = 0x10000000;
 pub const SOCK_NONBLOCK: ::c_int = 0x20000000;
 
+pub const FIONCLEX: ::c_ulong = 0x20006602;
+// Uncomment on next NetBSD release
+// pub const FIOSEEKDATA: ::c_ulong = 0xc0086661;
+// pub const FIOSEEKHOLE: ::c_ulong = 0xc0086662;
+pub const FIONREAD: ::c_ulong = 0x4004667f;
+pub const FIOASYNC: ::c_ulong = 0x8004667d;
+pub const FIOSETOWN: ::c_ulong = 0x8004667c;
+pub const FIOGETOWN: ::c_ulong = 0x4004667b;
+pub const OFIOGETBMAP: ::c_ulong = 0xc004667a;
+pub const FIOGETBMAP: ::c_ulong = 0xc008667a;
+pub const FIONWRITE: ::c_ulong = 0x40046679;
+pub const FIONSPACE: ::c_ulong = 0x40046678;
+pub const FIBMAP: ::c_ulong = 0xc008667a;
+
 pub const SIGSTKSZ : ::size_t = 40960;
 
 pub const PT_DUMPCORE: ::c_int = 12;
diff --git a/libc/src/unix/haiku/mod.rs b/libc/src/unix/haiku/mod.rs
index e65bca7..2aa5d13 100644
--- a/libc/src/unix/haiku/mod.rs
+++ b/libc/src/unix/haiku/mod.rs
@@ -1242,6 +1242,7 @@ extern {
                    termp: *mut termios,
                    winp: *mut ::winsize) -> ::pid_t;
     pub fn sethostname(name: *const ::c_char, len: ::size_t) -> ::c_int;
+    pub fn uname(buf: *mut ::utsname) -> ::c_int;
 }
 
 cfg_if! {
diff --git a/libc/src/unix/hermit/mod.rs b/libc/src/unix/hermit/mod.rs
index aadfa1c..ba7a90f 100644
--- a/libc/src/unix/hermit/mod.rs
+++ b/libc/src/unix/hermit/mod.rs
@@ -727,6 +727,7 @@ extern {
         -> ::c_int;
 
     pub fn setgroups(ngroups: ::c_int, grouplist: *const ::gid_t) -> ::c_int;
+    pub fn uname(buf: *mut ::utsname) -> ::c_int;
 }
 
 cfg_if! {
diff --git a/libc/src/unix/mod.rs b/libc/src/unix/mod.rs
index 370d7f4..88e13c5 100644
--- a/libc/src/unix/mod.rs
+++ b/libc/src/unix/mod.rs
@@ -972,7 +972,6 @@ extern {
     #[cfg_attr(target_os = "freebsd", link_name = "mknod@FBSD_1.0")]
     pub fn mknod(pathname: *const ::c_char, mode: ::mode_t,
                  dev: ::dev_t) -> ::c_int;
-    pub fn uname(buf: *mut ::utsname) -> ::c_int;
     pub fn gethostname(name: *mut ::c_char, len: ::size_t) -> ::c_int;
     pub fn getservbyname(name: *const ::c_char,
                          proto: *const ::c_char) -> *mut servent;
diff --git a/libc/src/unix/newlib/mod.rs b/libc/src/unix/newlib/mod.rs
index 77a4eb9..0cc411d 100644
--- a/libc/src/unix/newlib/mod.rs
+++ b/libc/src/unix/newlib/mod.rs
@@ -728,6 +728,7 @@ extern {
                link_name = "popen$UNIX2003")]
     pub fn popen(command: *const c_char,
                  mode: *const c_char) -> *mut ::FILE;
+    pub fn uname(buf: *mut ::utsname) -> ::c_int;
 }
 
 cfg_if! {
diff --git a/libc/src/unix/notbsd/linux/other/b32/x86.rs b/libc/src/unix/notbsd/linux/other/b32/x86.rs
index 1506aca..6c41718 100644
--- a/libc/src/unix/notbsd/linux/other/b32/x86.rs
+++ b/libc/src/unix/notbsd/linux/other/b32/x86.rs
@@ -758,6 +758,27 @@ pub const EFL: ::c_int = 14;
 pub const UESP: ::c_int = 15;
 pub const SS: ::c_int = 16;
 
+// offsets in mcontext_t.gregs from sys/ucontext.h
+pub const REG_GS: ::c_int = 0;
+pub const REG_FS: ::c_int = 1;
+pub const REG_ES: ::c_int = 2;
+pub const REG_DS: ::c_int = 3;
+pub const REG_EDI: ::c_int = 4;
+pub const REG_ESI: ::c_int = 5;
+pub const REG_EBP: ::c_int = 6;
+pub const REG_ESP: ::c_int = 7;
+pub const REG_EBX: ::c_int = 8;
+pub const REG_EDX: ::c_int = 9;
+pub const REG_ECX: ::c_int = 10;
+pub const REG_EAX: ::c_int = 11;
+pub const REG_TRAPNO: ::c_int = 12;
+pub const REG_ERR: ::c_int = 13;
+pub const REG_EIP: ::c_int = 14;
+pub const REG_CS: ::c_int = 15;
+pub const REG_EFL: ::c_int = 16;
+pub const REG_UESP: ::c_int = 17;
+pub const REG_SS: ::c_int = 18;
+
 extern {
     pub fn getcontext(ucp: *mut ucontext_t) -> ::c_int;
     pub fn setcontext(ucp: *const ucontext_t) -> ::c_int;
diff --git a/libc/src/unix/notbsd/linux/other/b64/x86_64.rs b/libc/src/unix/notbsd/linux/other/b64/x86_64.rs
index 43b8b9f..0d7137e 100644
--- a/libc/src/unix/notbsd/linux/other/b64/x86_64.rs
+++ b/libc/src/unix/notbsd/linux/other/b64/x86_64.rs
@@ -644,6 +644,31 @@ pub const ES: ::c_int = 24;
 pub const FS: ::c_int = 25;
 pub const GS: ::c_int = 26;
 
+// offsets in mcontext_t.gregs from sys/ucontext.h
+pub const REG_R8: ::c_int = 0;
+pub const REG_R9: ::c_int = 1;
+pub const REG_R10: ::c_int = 2;
+pub const REG_R11: ::c_int = 3;
+pub const REG_R12: ::c_int = 4;
+pub const REG_R13: ::c_int = 5;
+pub const REG_R14: ::c_int = 6;
+pub const REG_R15: ::c_int = 7;
+pub const REG_RDI: ::c_int = 8;
+pub const REG_RSI: ::c_int = 9;
+pub const REG_RBP: ::c_int = 10;
+pub const REG_RBX: ::c_int = 11;
+pub const REG_RDX: ::c_int = 12;
+pub const REG_RAX: ::c_int = 13;
+pub const REG_RCX: ::c_int = 14;
+pub const REG_RSP: ::c_int = 15;
+pub const REG_RIP: ::c_int = 16;
+pub const REG_EFL: ::c_int = 17;
+pub const REG_CSGSFS: ::c_int = 18;
+pub const REG_ERR: ::c_int = 19;
+pub const REG_TRAPNO: ::c_int = 20;
+pub const REG_OLDMASK: ::c_int = 21;
+pub const REG_CR2: ::c_int = 22;
+
 extern {
     pub fn getcontext(ucp: *mut ucontext_t) -> ::c_int;
     pub fn setcontext(ucp: *const ucontext_t) -> ::c_int;
diff --git a/libc/src/unix/notbsd/mod.rs b/libc/src/unix/notbsd/mod.rs
index 6ff0807..668c25f 100644
--- a/libc/src/unix/notbsd/mod.rs
+++ b/libc/src/unix/notbsd/mod.rs
@@ -1242,6 +1242,7 @@ extern {
                    flags: ::c_int) -> ::ssize_t;
     pub fn recvmsg(fd: ::c_int, msg: *mut ::msghdr, flags: ::c_int)
                    -> ::ssize_t;
+    pub fn uname(buf: *mut ::utsname) -> ::c_int;
 }
 
 cfg_if! {
diff --git a/libc/src/unix/solaris/mod.rs b/libc/src/unix/solaris/mod.rs
index c4ec111..c991e62 100644
--- a/libc/src/unix/solaris/mod.rs
+++ b/libc/src/unix/solaris/mod.rs
@@ -1466,4 +1466,5 @@ extern {
                  mode: *const c_char) -> *mut ::FILE;
 
     pub fn dup3(src: ::c_int, dst: ::c_int, flags: ::c_int) -> ::c_int;
+    pub fn uname(buf: *mut ::utsname) -> ::c_int;
 }
diff --git a/libc/src/unix/uclibc/mod.rs b/libc/src/unix/uclibc/mod.rs
index 9d8e97e..c04c22a 100644
--- a/libc/src/unix/uclibc/mod.rs
+++ b/libc/src/unix/uclibc/mod.rs
@@ -1953,6 +1953,7 @@ extern {
                link_name = "popen$UNIX2003")]
     pub fn popen(command: *const c_char,
                  mode: *const c_char) -> *mut ::FILE;
+    pub fn uname(buf: *mut ::utsname) -> ::c_int;
 }
 
 cfg_if! {
diff --git a/nitrocli/CHANGELOG.md b/nitrocli/CHANGELOG.md
index 6ed910d..912c9df 100644
--- a/nitrocli/CHANGELOG.md
+++ b/nitrocli/CHANGELOG.md
@@ -8,7 +8,7 @@ Unreleased
   - Bumped `rand` dependency to `0.6.4`
   - Removed `rustc_version`, `semver`, and `semver-parser` dependencies
 - Bumped `nitrokey-sys` dependency to `3.4.3`
-- Bumped `libc` dependency to `0.2.46`
+- Bumped `libc` dependency to `0.2.47`
 
 
 0.2.2
diff --git a/nitrocli/Cargo.lock b/nitrocli/Cargo.lock
index 4d793d7..da4ce72 100644
--- a/nitrocli/Cargo.lock
+++ b/nitrocli/Cargo.lock
@@ -57,7 +57,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "libc"
-version = "0.2.46"
+version = "0.2.47"
 
 [[package]]
 name = "memchr"
@@ -65,7 +65,7 @@ version = "2.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.46",
+ "libc 0.2.47",
  "version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -75,7 +75,7 @@ version = "0.2.2"
 dependencies = [
  "argparse 0.2.2",
  "base32 0.4.0",
- "libc 0.2.46",
+ "libc 0.2.47",
  "nitrokey 0.3.4",
  "nitrokey-test 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -85,7 +85,7 @@ dependencies = [
 name = "nitrokey"
 version = "0.3.4"
 dependencies = [
- "libc 0.2.46",
+ "libc 0.2.47",
  "nitrokey-sys 3.4.3",
  "rand_core 0.3.0",
  "rand_os 0.1.1",
@@ -134,7 +134,7 @@ version = "0.1.1"
 dependencies = [
  "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.46",
+ "libc 0.2.47",
  "rand_core 0.3.0",
  "rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",