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

20 files changed, 215 insertions, 89 deletions

diff --git a/libc/src/unix/notbsd/android/b32/mod.rs b/libc/src/unix/notbsd/android/b32/mod.rs
index 9efcd61..32f88e4 100644
--- a/libc/src/unix/notbsd/android/b32/mod.rs
+++ b/libc/src/unix/notbsd/android/b32/mod.rs
@@ -1,3 +1,6 @@
+// The following definitions are correct for arm and i686,
+// but may be wrong for mips
+
 pub type c_long = i32;
 pub type c_ulong = u32;
 pub type mode_t = u16;
diff --git a/libc/src/unix/notbsd/android/b64/aarch64.rs b/libc/src/unix/notbsd/android/b64/aarch64.rs
new file mode 100644
index 0000000..89c505d
--- /dev/null
+++ b/libc/src/unix/notbsd/android/b64/aarch64.rs
@@ -0,0 +1,56 @@
+pub type c_char = u8;
+pub type wchar_t = u32;
+
+s! {
+    pub struct stat {
+        pub st_dev: ::dev_t,
+        pub st_ino: ::ino_t,
+        pub st_mode: ::c_uint,
+        pub st_nlink: ::c_uint,
+        pub st_uid: ::uid_t,
+        pub st_gid: ::gid_t,
+        pub st_rdev: ::dev_t,
+        __pad1: ::c_ulong,
+        pub st_size: ::off64_t,
+        pub st_blksize: ::c_int,
+        __pad2: ::c_int,
+        pub st_blocks: ::c_long,
+        pub st_atime: ::time_t,
+        pub st_atime_nsec: ::c_ulong,
+        pub st_mtime: ::time_t,
+        pub st_mtime_nsec: ::c_ulong,
+        pub st_ctime: ::time_t,
+        pub st_ctime_nsec: ::c_ulong,
+        __unused4: ::c_uint,
+        __unused5: ::c_uint,
+    }
+
+    pub struct stat64 {
+        pub st_dev: ::dev_t,
+        pub st_ino: ::ino_t,
+        pub st_mode: ::c_uint,
+        pub st_nlink: ::c_uint,
+        pub st_uid: ::uid_t,
+        pub st_gid: ::gid_t,
+        pub st_rdev: ::dev_t,
+        __pad1: ::c_ulong,
+        pub st_size: ::off64_t,
+        pub st_blksize: ::c_int,
+        __pad2: ::c_int,
+        pub st_blocks: ::c_long,
+        pub st_atime: ::time_t,
+        pub st_atime_nsec: ::c_ulong,
+        pub st_mtime: ::time_t,
+        pub st_mtime_nsec: ::c_ulong,
+        pub st_ctime: ::time_t,
+        pub st_ctime_nsec: ::c_ulong,
+        __unused4: ::c_uint,
+        __unused5: ::c_uint,
+    }
+}
+
+pub const O_DIRECT: ::c_int = 0x10000;
+pub const O_DIRECTORY: ::c_int = 0x4000;
+pub const O_NOFOLLOW: ::c_int = 0x8000;
+
+pub const SYS_gettid: ::c_long = 178;
diff --git a/libc/src/unix/notbsd/android/b64/mod.rs b/libc/src/unix/notbsd/android/b64/mod.rs
index 31a05d6..98a2f39 100644
--- a/libc/src/unix/notbsd/android/b64/mod.rs
+++ b/libc/src/unix/notbsd/android/b64/mod.rs
@@ -1,12 +1,11 @@
-// The following definitions are correct for aarch64 and may be wrong for x86_64
+// The following definitions are correct for aarch64 and x86_64,
+// but may be wrong for mips64
 
-pub type c_char = u8;
 pub type c_long = i64;
 pub type c_ulong = u64;
 pub type mode_t = u32;
 pub type off64_t = i64;
 pub type socklen_t = u32;
-pub type wchar_t = u32;
 
 s! {
     pub struct sigset_t {
@@ -17,7 +16,7 @@ s! {
         pub sa_flags: ::c_uint,
         pub sa_sigaction: ::sighandler_t,
         pub sa_mask: ::sigset_t,
-        _restorer: *mut ::c_void,
+        pub sa_restorer: ::dox::Option<extern fn()>,
     }
 
     pub struct rlimit64 {
@@ -25,52 +24,6 @@ s! {
         pub rlim_max: ::c_ulonglong,
     }
 
-    pub struct stat {
-        pub st_dev: ::dev_t,
-        pub st_ino: ::ino_t,
-        pub st_mode: ::c_uint,
-        pub st_nlink: ::c_uint,
-        pub st_uid: ::uid_t,
-        pub st_gid: ::gid_t,
-        pub st_rdev: ::dev_t,
-        __pad1: ::c_ulong,
-        pub st_size: ::off64_t,
-        pub st_blksize: ::c_int,
-        __pad2: ::c_int,
-        pub st_blocks: ::c_long,
-        pub st_atime: ::time_t,
-        pub st_atime_nsec: ::c_ulong,
-        pub st_mtime: ::time_t,
-        pub st_mtime_nsec: ::c_ulong,
-        pub st_ctime: ::time_t,
-        pub st_ctime_nsec: ::c_ulong,
-        __unused4: ::c_uint,
-        __unused5: ::c_uint,
-    }
-
-    pub struct stat64 {
-        pub st_dev: ::dev_t,
-        pub st_ino: ::ino_t,
-        pub st_mode: ::c_uint,
-        pub st_nlink: ::c_uint,
-        pub st_uid: ::uid_t,
-        pub st_gid: ::gid_t,
-        pub st_rdev: ::dev_t,
-        __pad1: ::c_ulong,
-        pub st_size: ::off64_t,
-        pub st_blksize: ::c_int,
-        __pad2: ::c_int,
-        pub st_blocks: ::c_long,
-        pub st_atime: ::time_t,
-        pub st_atime_nsec: ::c_ulong,
-        pub st_mtime: ::time_t,
-        pub st_mtime_nsec: ::c_ulong,
-        pub st_ctime: ::time_t,
-        pub st_ctime_nsec: ::c_ulong,
-        __unused4: ::c_uint,
-        __unused5: ::c_uint,
-    }
-
     pub struct pthread_attr_t {
         pub flags: ::uint32_t,
         pub stack_base: *mut ::c_void,
@@ -143,15 +96,10 @@ s! {
     }
 }
 
-pub const O_DIRECT: ::c_int = 0x10000;
-pub const O_DIRECTORY: ::c_int = 0x4000;
-pub const O_NOFOLLOW: ::c_int = 0x8000;
-
 pub const RTLD_GLOBAL: ::c_int = 0x00100;
 pub const RTLD_NOW: ::c_int = 2;
 pub const RTLD_DEFAULT: *mut ::c_void = 0i64 as *mut ::c_void;
 
-pub const SYS_gettid: ::c_long = 178;
 pub const PTHREAD_MUTEX_INITIALIZER: pthread_mutex_t = pthread_mutex_t {
     value: 0,
     __reserved: [0; 36],
@@ -200,3 +148,15 @@ extern {
     // the return type should be ::ssize_t, but it is c_int!
     pub fn recvmsg(fd: ::c_int, msg: *mut ::msghdr, flags: ::c_int) -> ::c_int;
 }
+
+cfg_if! {
+    if #[cfg(target_arch = "x86_64")] {
+        mod x86_64;
+        pub use self::x86_64::*;
+    } else if #[cfg(target_arch = "aarch64")] {
+        mod aarch64;
+        pub use self::aarch64::*;
+    } else {
+        // Unknown target_arch
+    }
+}
diff --git a/libc/src/unix/notbsd/android/b64/x86_64.rs b/libc/src/unix/notbsd/android/b64/x86_64.rs
new file mode 100644
index 0000000..58d07e1
--- /dev/null
+++ b/libc/src/unix/notbsd/android/b64/x86_64.rs
@@ -0,0 +1,50 @@
+pub type c_char = i8;
+pub type wchar_t = i32;
+
+s! {
+    pub struct stat {
+        pub st_dev: ::dev_t,
+        pub st_ino: ::ino_t,
+        pub st_nlink: ::c_ulong,
+        pub st_mode: ::c_uint,
+        pub st_uid: ::uid_t,
+        pub st_gid: ::gid_t,
+        pub st_rdev: ::dev_t,
+        pub st_size: ::off64_t,
+        pub st_blksize: ::c_long,
+        pub st_blocks: ::c_long,
+        pub st_atime: ::c_ulong,
+        pub st_atime_nsec: ::c_ulong,
+        pub st_mtime: ::c_ulong,
+        pub st_mtime_nsec: ::c_ulong,
+        pub st_ctime: ::c_ulong,
+        pub st_ctime_nsec: ::c_ulong,
+        __unused: [::c_long; 3],
+    }
+
+    pub struct stat64 {
+        pub st_dev: ::dev_t,
+        pub st_ino: ::ino_t,
+        pub st_nlink: ::c_ulong,
+        pub st_mode: ::c_uint,
+        pub st_uid: ::uid_t,
+        pub st_gid: ::gid_t,
+        pub st_rdev: ::dev_t,
+        pub st_size: ::off64_t,
+        pub st_blksize: ::c_long,
+        pub st_blocks: ::c_long,
+        pub st_atime: ::c_ulong,
+        pub st_atime_nsec: ::c_ulong,
+        pub st_mtime: ::c_ulong,
+        pub st_mtime_nsec: ::c_ulong,
+        pub st_ctime: ::c_ulong,
+        pub st_ctime_nsec: ::c_ulong,
+        __unused: [::c_long; 3],
+    }
+}
+
+pub const O_DIRECT: ::c_int = 0x4000;
+pub const O_DIRECTORY: ::c_int = 0x10000;
+pub const O_NOFOLLOW: ::c_int = 0x20000;
+
+pub const SYS_gettid: ::c_long = 186;
diff --git a/libc/src/unix/notbsd/android/mod.rs b/libc/src/unix/notbsd/android/mod.rs
index cd20cb1..547d832 100644
--- a/libc/src/unix/notbsd/android/mod.rs
+++ b/libc/src/unix/notbsd/android/mod.rs
@@ -464,7 +464,6 @@ pub const TCSBRKP: ::c_int = 0x5425;
 pub const TCSANOW: ::c_int = 0;
 pub const TCSADRAIN: ::c_int = 0x1;
 pub const TCSAFLUSH: ::c_int = 0x2;
-pub const IUTF8: ::tcflag_t = 0x00004000;
 pub const VEOF: usize = 4;
 pub const VEOL: usize = 11;
 pub const VEOL2: usize = 16;
@@ -585,6 +584,7 @@ pub const MCL_CURRENT: ::c_int = 0x0001;
 pub const MCL_FUTURE: ::c_int = 0x0002;
 
 pub const SIGSTKSZ: ::size_t = 8192;
+pub const MINSIGSTKSZ: ::size_t = 2048;
 pub const CBAUD: ::tcflag_t = 0o0010017;
 pub const TAB1: ::c_int = 0x00000800;
 pub const TAB2: ::c_int = 0x00001000;
@@ -753,6 +753,17 @@ f! {
     pub fn CPU_EQUAL(set1: &cpu_set_t, set2: &cpu_set_t) -> bool {
         set1.__bits == set2.__bits
     }
+    pub fn major(dev: ::dev_t) -> ::c_int {
+        ((dev >> 8) & 0xfff) as ::c_int
+    }
+    pub fn minor(dev: ::dev_t) -> ::c_int {
+        ((dev & 0xff) | ((dev >> 12) & 0xfff00)) as ::c_int
+    }
+    pub fn makedev(ma: ::c_int, mi: ::c_int) -> ::dev_t {
+        let ma = ma as ::dev_t;
+        let mi = mi as ::dev_t;
+        ((ma & 0xfff) << 8) | (mi & 0xff) | ((mi & 0xfff00) << 12)
+    }
 }
 
 extern {
diff --git a/libc/src/unix/notbsd/linux/mips/mips32.rs b/libc/src/unix/notbsd/linux/mips/mips32.rs
index 22bb33b..042495e 100644
--- a/libc/src/unix/notbsd/linux/mips/mips32.rs
+++ b/libc/src/unix/notbsd/linux/mips/mips32.rs
@@ -86,7 +86,7 @@ s! {
         pub sa_flags: ::c_int,
         pub sa_sigaction: ::sighandler_t,
         pub sa_mask: sigset_t,
-        _restorer: *mut ::c_void,
+        pub sa_restorer: ::dox::Option<extern fn()>,
         _resv: [::c_int; 1],
     }
 
diff --git a/libc/src/unix/notbsd/linux/mips/mips64.rs b/libc/src/unix/notbsd/linux/mips/mips64.rs
index 9478599..5b0484a 100644
--- a/libc/src/unix/notbsd/linux/mips/mips64.rs
+++ b/libc/src/unix/notbsd/linux/mips/mips64.rs
@@ -85,7 +85,7 @@ s! {
         pub sa_flags: ::c_int,
         pub sa_sigaction: ::sighandler_t,
         pub sa_mask: sigset_t,
-        _restorer: *mut ::c_void,
+        pub sa_restorer: ::dox::Option<extern fn()>,
     }
 
     pub struct stack_t {
diff --git a/libc/src/unix/notbsd/linux/mips/mod.rs b/libc/src/unix/notbsd/linux/mips/mod.rs
index db580c9..7b1c15e 100644
--- a/libc/src/unix/notbsd/linux/mips/mod.rs
+++ b/libc/src/unix/notbsd/linux/mips/mod.rs
@@ -322,7 +322,7 @@ pub const VMIN: usize = 4;
 pub const IEXTEN: ::tcflag_t = 0x00000100;
 pub const TOSTOP: ::tcflag_t = 0x00008000;
 pub const FLUSHO: ::tcflag_t = 0x00002000;
-pub const IUTF8: ::tcflag_t = 0x00004000;
+pub const EXTPROC: ::tcflag_t = 0o200000;
 pub const TCSANOW: ::c_int = 0x540e;
 pub const TCSADRAIN: ::c_int = 0x540f;
 pub const TCSAFLUSH: ::c_int = 0x5410;
@@ -420,6 +420,7 @@ pub const MCL_CURRENT: ::c_int = 0x0001;
 pub const MCL_FUTURE: ::c_int = 0x0002;
 
 pub const SIGSTKSZ: ::size_t = 8192;
+pub const MINSIGSTKSZ: ::size_t = 2048;
 pub const CBAUD: ::tcflag_t = 0o0010017;
 pub const TAB1: ::c_int = 0x00000800;
 pub const TAB2: ::c_int = 0x00001000;
diff --git a/libc/src/unix/notbsd/linux/mod.rs b/libc/src/unix/notbsd/linux/mod.rs
index 9774f93..b9375a3 100644
--- a/libc/src/unix/notbsd/linux/mod.rs
+++ b/libc/src/unix/notbsd/linux/mod.rs
@@ -220,6 +220,11 @@ s! {
         pub msgtql: ::c_int,
         pub msgseg: ::c_ushort,
     }
+
+    pub struct mmsghdr {
+        pub msg_hdr: ::msghdr,
+        pub msg_len: ::c_uint,
+    }
 }
 
 pub const ABDAY_1: ::nl_item = 0x20000;
@@ -692,6 +697,14 @@ pub const PR_CAP_AMBIENT_RAISE: ::c_int = 2;
 pub const PR_CAP_AMBIENT_LOWER: ::c_int = 3;
 pub const PR_CAP_AMBIENT_CLEAR_ALL: ::c_int = 4;
 
+pub const XATTR_CREATE: ::c_int = 0x1;
+pub const XATTR_REPLACE: ::c_int = 0x2;
+
+// On Linux, libc doesn't define this constant, libattr does instead.
+// We still define it for Linux as it's defined by libc on other platforms,
+// and it's mentioned in the man pages for getxattr and setxattr.
+pub const ENOATTR: ::c_int = ::ENODATA;
+
 f! {
     pub fn CPU_ZERO(cpuset: &mut cpu_set_t) -> () {
         for slot in cpuset.bits.iter_mut() {
@@ -722,6 +735,31 @@ f! {
     pub fn CPU_EQUAL(set1: &cpu_set_t, set2: &cpu_set_t) -> bool {
         set1.bits == set2.bits
     }
+
+    pub fn major(dev: ::dev_t) -> ::c_uint {
+        let mut major = 0;
+        major |= (dev & 0x00000000000fff00) >> 8;
+        major |= (dev & 0xfffff00000000000) >> 32;
+        major as ::c_uint
+    }
+
+    pub fn minor(dev: ::dev_t) -> ::c_uint {
+        let mut minor = 0;
+        minor |= (dev & 0xfffff00000000000) >> 0;
+        minor |= (dev & 0x00000ffffff00000) >> 12;
+        minor as ::c_uint
+    }
+
+    pub fn makedev(major: ::c_uint, minor: ::c_uint) -> ::dev_t {
+        let major = major as ::dev_t;
+        let minor = minor as ::dev_t;
+        let mut dev = 0;
+        dev |= (major & 0x00000fff) << 8;
+        dev |= (major & 0xfffff000) << 32;
+        dev |= (minor & 0x000000ff) << 0;
+        dev |= (minor & 0xffffff00) << 12;
+        dev
+    }
 }
 
 extern {
@@ -958,6 +996,13 @@ extern {
                    -> ::ssize_t;
 }
 
+extern {
+    pub fn sendmmsg(sockfd: ::c_int, msgvec: *mut mmsghdr, vlen: ::c_uint,
+                    flags: ::c_int) -> ::c_int;
+    pub fn recvmmsg(sockfd: ::c_int, msgvec: *mut mmsghdr, vlen: ::c_uint,
+                    flags: ::c_int, timeout: *mut ::timespec) -> ::c_int;
+}
+
 cfg_if! {
     if #[cfg(any(target_env = "musl",
                  target_os = "fuchsia",
diff --git a/libc/src/unix/notbsd/linux/musl/mod.rs b/libc/src/unix/notbsd/linux/musl/mod.rs
index 2bf13f9..b365028 100644
--- a/libc/src/unix/notbsd/linux/musl/mod.rs
+++ b/libc/src/unix/notbsd/linux/musl/mod.rs
@@ -35,7 +35,7 @@ s! {
         pub sa_sigaction: ::sighandler_t,
         pub sa_mask: ::sigset_t,
         pub sa_flags: ::c_int,
-        _restorer: *mut ::c_void,
+        pub sa_restorer: ::dox::Option<extern fn()>,
     }
 
     pub struct ipc_perm {
@@ -124,6 +124,9 @@ pub const EFD_CLOEXEC: ::c_int = 0x80000;
 pub const BUFSIZ: ::c_uint = 1024;
 pub const TMP_MAX: ::c_uint = 10000;
 pub const FOPEN_MAX: ::c_uint = 1000;
+pub const O_PATH: ::c_int = 0o10000000;
+pub const O_EXEC: ::c_int = 0o10000000;
+pub const O_SEARCH: ::c_int = 0o10000000;
 pub const O_ACCMODE: ::c_int = 0o10000003;
 pub const O_NDELAY: ::c_int = O_NONBLOCK;
 pub const NI_MAXHOST: ::socklen_t = 255;
@@ -236,6 +239,7 @@ pub const MCL_CURRENT: ::c_int = 0x0001;
 pub const MCL_FUTURE: ::c_int = 0x0002;
 
 pub const SIGSTKSZ: ::size_t = 8192;
+pub const MINSIGSTKSZ: ::size_t = 2048;
 pub const CBAUD: ::tcflag_t = 0o0010017;
 pub const TAB1: ::c_int = 0x00000800;
 pub const TAB2: ::c_int = 0x00001000;
diff --git a/libc/src/unix/notbsd/linux/other/b32/arm.rs b/libc/src/unix/notbsd/linux/other/b32/arm.rs
index cbd9e40..ee6d674 100644
--- a/libc/src/unix/notbsd/linux/other/b32/arm.rs
+++ b/libc/src/unix/notbsd/linux/other/b32/arm.rs
@@ -100,6 +100,7 @@ pub const MCL_CURRENT: ::c_int = 0x0001;
 pub const MCL_FUTURE: ::c_int = 0x0002;
 
 pub const SIGSTKSZ: ::size_t = 8192;
+pub const MINSIGSTKSZ: ::size_t = 2048;
 pub const CBAUD: ::tcflag_t = 0o0010017;
 pub const TAB1: ::c_int = 0x00000800;
 pub const TAB2: ::c_int = 0x00001000;
diff --git a/libc/src/unix/notbsd/linux/other/b32/powerpc.rs b/libc/src/unix/notbsd/linux/other/b32/powerpc.rs
index 13e9d36..035bfe1 100644
--- a/libc/src/unix/notbsd/linux/other/b32/powerpc.rs
+++ b/libc/src/unix/notbsd/linux/other/b32/powerpc.rs
@@ -103,6 +103,7 @@ pub const MCL_CURRENT: ::c_int = 0x2000;
 pub const MCL_FUTURE: ::c_int = 0x4000;
 
 pub const SIGSTKSZ: ::size_t = 0x4000;
+pub const MINSIGSTKSZ: ::size_t = 4096;
 pub const CBAUD: ::tcflag_t = 0xff;
 pub const TAB1: ::c_int = 0x400;
 pub const TAB2: ::c_int = 0x800;
diff --git a/libc/src/unix/notbsd/linux/other/b32/x86.rs b/libc/src/unix/notbsd/linux/other/b32/x86.rs
index 68218ff..263e140 100644
--- a/libc/src/unix/notbsd/linux/other/b32/x86.rs
+++ b/libc/src/unix/notbsd/linux/other/b32/x86.rs
@@ -141,6 +141,7 @@ pub const MCL_CURRENT: ::c_int = 0x0001;
 pub const MCL_FUTURE: ::c_int = 0x0002;
 
 pub const SIGSTKSZ: ::size_t = 8192;
+pub const MINSIGSTKSZ: ::size_t = 2048;
 pub const CBAUD: ::tcflag_t = 0o0010017;
 pub const TAB1: ::c_int = 0x00000800;
 pub const TAB2: ::c_int = 0x00001000;
diff --git a/libc/src/unix/notbsd/linux/other/b64/aarch64.rs b/libc/src/unix/notbsd/linux/other/b64/aarch64.rs
index 26898c5..77cee3d 100644
--- a/libc/src/unix/notbsd/linux/other/b64/aarch64.rs
+++ b/libc/src/unix/notbsd/linux/other/b64/aarch64.rs
@@ -344,6 +344,7 @@ pub const MCL_CURRENT: ::c_int = 0x0001;
 pub const MCL_FUTURE: ::c_int = 0x0002;
 
 pub const SIGSTKSZ: ::size_t = 16384;
+pub const MINSIGSTKSZ: ::size_t = 5120;
 pub const CBAUD: ::tcflag_t = 0o0010017;
 pub const TAB1: ::c_int = 0x00000800;
 pub const TAB2: ::c_int = 0x00001000;
diff --git a/libc/src/unix/notbsd/linux/other/b64/powerpc64.rs b/libc/src/unix/notbsd/linux/other/b64/powerpc64.rs
index 1257023..8c19b07 100644
--- a/libc/src/unix/notbsd/linux/other/b64/powerpc64.rs
+++ b/libc/src/unix/notbsd/linux/other/b64/powerpc64.rs
@@ -342,6 +342,7 @@ pub const MCL_CURRENT: ::c_int = 0x2000;
 pub const MCL_FUTURE: ::c_int = 0x4000;
 
 pub const SIGSTKSZ: ::size_t = 0x4000;
+pub const MINSIGSTKSZ: ::size_t = 4096;
 pub const CBAUD: ::tcflag_t = 0xff;
 pub const TAB1: ::c_int = 0x400;
 pub const TAB2: ::c_int = 0x800;
diff --git a/libc/src/unix/notbsd/linux/other/b64/sparc64.rs b/libc/src/unix/notbsd/linux/other/b64/sparc64.rs
index a1ac4f5..12598e0 100644
--- a/libc/src/unix/notbsd/linux/other/b64/sparc64.rs
+++ b/libc/src/unix/notbsd/linux/other/b64/sparc64.rs
@@ -301,6 +301,7 @@ pub const MCL_CURRENT: ::c_int = 0x2000;
 pub const MCL_FUTURE: ::c_int = 0x4000;
 
 pub const SIGSTKSZ: ::size_t = 16384;
+pub const MINSIGSTKSZ: ::size_t = 4096;
 pub const CBAUD: ::tcflag_t = 0x0000100f;
 pub const TAB1: ::c_int = 0x800;
 pub const TAB2: ::c_int = 0x1000;
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 b5f2a82..b39ccb3 100644
--- a/libc/src/unix/notbsd/linux/other/b64/x86_64.rs
+++ b/libc/src/unix/notbsd/linux/other/b64/x86_64.rs
@@ -402,6 +402,7 @@ pub const MCL_CURRENT: ::c_int = 0x0001;
 pub const MCL_FUTURE: ::c_int = 0x0002;
 
 pub const SIGSTKSZ: ::size_t = 8192;
+pub const MINSIGSTKSZ: ::size_t = 2048;
 pub const CBAUD: ::tcflag_t = 0o0010017;
 pub const TAB1: ::c_int = 0x00000800;
 pub const TAB2: ::c_int = 0x00001000;
diff --git a/libc/src/unix/notbsd/linux/other/mod.rs b/libc/src/unix/notbsd/linux/other/mod.rs
index ad5cc69..b7a11a8 100644
--- a/libc/src/unix/notbsd/linux/other/mod.rs
+++ b/libc/src/unix/notbsd/linux/other/mod.rs
@@ -70,7 +70,7 @@ s! {
         #[cfg(target_arch = "sparc64")]
         __reserved0: ::c_int,
         pub sa_flags: ::c_int,
-        _restorer: *mut ::c_void,
+        pub sa_restorer: ::dox::Option<extern fn()>,
     }
 
     pub struct stack_t {
@@ -314,7 +314,6 @@ pub const TMPFS_MAGIC: ::c_long = 0x01021994;
 pub const USBDEVICE_SUPER_MAGIC: ::c_long = 0x00009fa2;
 
 pub const VEOF: usize = 4;
-pub const IUTF8: ::tcflag_t = 0x00004000;
 
 pub const CPU_SETSIZE: ::c_int = 0x400;
 
diff --git a/libc/src/unix/notbsd/linux/s390x.rs b/libc/src/unix/notbsd/linux/s390x.rs
index b646647..1c0cd56 100644
--- a/libc/src/unix/notbsd/linux/s390x.rs
+++ b/libc/src/unix/notbsd/linux/s390x.rs
@@ -86,7 +86,7 @@ s! {
         pub sa_sigaction: ::sighandler_t,
         __glibc_reserved0: ::c_int,
         pub sa_flags: ::c_int,
-        _restorer: *mut ::c_void,
+        pub sa_restorer: ::dox::Option<extern fn()>,
         pub sa_mask: sigset_t,
     }
 
@@ -339,6 +339,7 @@ pub const SA_ONSTACK: ::c_int = 0x08000000;
 pub const SA_SIGINFO: ::c_int = 4;
 pub const SIGBUS: ::c_int = 7;
 pub const SIGSTKSZ: ::size_t = 0x2000;
+pub const MINSIGSTKSZ: ::size_t = 2048;
 pub const SIG_SETMASK: ::c_int = 2;
 pub const SOCK_DGRAM: ::c_int = 2;
 pub const SOCK_STREAM: ::c_int = 1;
@@ -576,7 +577,6 @@ pub const VMIN: usize = 6;
 pub const IEXTEN: ::tcflag_t = 0x00008000;
 pub const TOSTOP: ::tcflag_t = 0x00000100;
 pub const FLUSHO: ::tcflag_t = 0x00001000;
-pub const IUTF8: ::tcflag_t = 0x00004000;
 
 pub const CPU_SETSIZE: ::c_int = 0x400;
 
diff --git a/libc/src/unix/notbsd/mod.rs b/libc/src/unix/notbsd/mod.rs
index da6b928..b20d043 100644
--- a/libc/src/unix/notbsd/mod.rs
+++ b/libc/src/unix/notbsd/mod.rs
@@ -675,6 +675,7 @@ pub const IGNCR: ::tcflag_t = 0x00000080;
 pub const ICRNL: ::tcflag_t = 0x00000100;
 pub const IXANY: ::tcflag_t = 0x00000800;
 pub const IMAXBEL: ::tcflag_t = 0x00002000;
+pub const IUTF8: ::tcflag_t = 0x00004000;
 pub const OPOST: ::tcflag_t = 0x1;
 pub const CS5: ::tcflag_t = 0x00000000;
 pub const CRTSCTS: ::tcflag_t = 0x80000000;
@@ -728,6 +729,10 @@ pub const POSIX_FADV_WILLNEED: ::c_int = 3;
 
 pub const AT_FDCWD: ::c_int = -100;
 pub const AT_SYMLINK_NOFOLLOW: ::c_int = 0x100;
+pub const AT_REMOVEDIR: ::c_int = 0x200;
+pub const AT_SYMLINK_FOLLOW: ::c_int = 0x400;
+pub const AT_NO_AUTOMOUNT: ::c_int = 0x800;
+pub const AT_EMPTY_PATH: ::c_int = 0x1000;
 
 pub const LOG_CRON: ::c_int = 9 << 3;
 pub const LOG_AUTHPRIV: ::c_int = 10 << 3;
@@ -746,6 +751,9 @@ pub const P_ALL: idtype_t = 0;
 pub const P_PID: idtype_t = 1;
 pub const P_PGID: idtype_t = 2;
 
+pub const UTIME_OMIT: c_long = 1073741822;
+pub const UTIME_NOW: c_long = 1073741823;
+
 f! {
     pub fn FD_CLR(fd: ::c_int, set: *mut fd_set) -> () {
         let fd = fd as usize;
@@ -917,44 +925,26 @@ extern {
                   offset: off64_t)
                   -> *mut ::c_void;
     pub fn open64(path: *const c_char, oflag: ::c_int, ...) -> ::c_int;
+    pub fn openat64(fd: ::c_int,
+                    path: *const c_char,
+                    oflag: ::c_int, ...) -> ::c_int;
     pub fn pread64(fd: ::c_int, buf: *mut ::c_void, count: ::size_t,
                    offset: off64_t) -> ::ssize_t;
     pub fn pwrite64(fd: ::c_int, buf: *const ::c_void, count: ::size_t,
                     offset: off64_t) -> ::ssize_t;
+    pub fn readdir64(dirp: *mut ::DIR) -> *mut ::dirent64;
     pub fn readdir64_r(dirp: *mut ::DIR, entry: *mut ::dirent64,
                        result: *mut *mut ::dirent64) -> ::c_int;
     pub fn setrlimit64(resource: ::c_int, rlim: *const rlimit64) -> ::c_int;
     pub fn stat64(path: *const c_char, buf: *mut stat64) -> ::c_int;
+    pub fn truncate64(path: *const c_char, length: off64_t) -> ::c_int;
     pub fn eventfd(init: ::c_uint, flags: ::c_int) -> ::c_int;
     pub fn sysinfo (info: *mut ::sysinfo) -> ::c_int;
 
-    pub fn openat(dirfd: ::c_int, pathname: *const ::c_char,
-                  flags: ::c_int, ...) -> ::c_int;
-    pub fn faccessat(dirfd: ::c_int, pathname: *const ::c_char,
-                     mode: ::c_int, flags: ::c_int) -> ::c_int;
-    pub fn fchmodat(dirfd: ::c_int, pathname: *const ::c_char,
-                    mode: ::mode_t, flags: ::c_int) -> ::c_int;
-    pub fn fchownat(dirfd: ::c_int, pathname: *const ::c_char,
-                    owner: ::uid_t, group: ::gid_t,
-                    flags: ::c_int) -> ::c_int;
-    pub fn fstatat(dirfd: ::c_int, pathname: *const ::c_char,
-                   buf: *mut stat, flags: ::c_int) -> ::c_int;
-    pub fn linkat(olddirfd: ::c_int, oldpath: *const ::c_char,
-                  newdirfd: ::c_int, newpath: *const ::c_char,
-                  flags: ::c_int) -> ::c_int;
-    pub fn mkdirat(dirfd: ::c_int, pathname: *const ::c_char,
-                   mode: ::mode_t) -> ::c_int;
+    pub fn fdopendir(fd: ::c_int) -> *mut ::DIR;
+
     pub fn mknodat(dirfd: ::c_int, pathname: *const ::c_char,
                    mode: ::mode_t, dev: dev_t) -> ::c_int;
-    pub fn readlinkat(dirfd: ::c_int, pathname: *const ::c_char,
-                      buf: *mut ::c_char, bufsiz: ::size_t) -> ::ssize_t;
-    pub fn renameat(olddirfd: ::c_int, oldpath: *const ::c_char,
-                    newdirfd: ::c_int, newpath: *const ::c_char)
-                    -> ::c_int;
-    pub fn symlinkat(target: *const ::c_char, newdirfd: ::c_int,
-                     linkpath: *const ::c_char) -> ::c_int;
-    pub fn unlinkat(dirfd: ::c_int, pathname: *const ::c_char,
-                    flags: ::c_int) -> ::c_int;
     pub fn ppoll(fds: *mut ::pollfd,
                  nfds: nfds_t,
                  timeout: *const ::timespec,