Merge remote-tracking branch 'origin/master' into llvm13

Conflicts:

 * cmake/Findclang.cmake
 * cmake/Findlld.cmake
 * cmake/Findllvm.cmake

In master branch, more search paths were added to these files with "12"
in the path. In this commit I updated them to "13".

 * src/stage1/codegen.cpp
 * src/zig_llvm.cpp
 * src/zig_llvm.h

In master branch, ZigLLVMBuildCmpXchg is improved to add
`is_single_threaded`. However, the LLVM 13 C API has this already, and
in the llvm13 branch, ZigLLVMBuildCmpXchg is deleted in favor of the C
API. In this commit I updated stage2 to use the LLVM 13 C API rather
than depending on an improved ZigLLVMBuildCmpXchg.

Additionally, src/target.zig largestAtomicBits needed to be updated to
include the new m68k ISA.

1 files changed, 0 insertions, 2455 deletions

diff --git a/lib/std/os/bits/linux.zig b/lib/std/os/bits/linux.zig
deleted file mode 100644
index 653fb8f1e1..0000000000
--- a/lib/std/os/bits/linux.zig
+++ /dev/null
@@ -1,2455 +0,0 @@
-const std = @import("../../std.zig");
-const maxInt = std.math.maxInt;
-const arch = @import("builtin").target.cpu.arch;
-pub usingnamespace @import("posix.zig");
-
-pub const E = switch (arch) {
-    .mips, .mipsel => @import("linux/errno/mips.zig").E,
-    .sparc, .sparcel, .sparcv9 => @import("linux/errno/sparc.zig").E,
-    else => @import("linux/errno/generic.zig").E,
-};
-
-pub usingnamespace switch (arch) {
-    .i386 => @import("linux/i386.zig"),
-    .x86_64 => @import("linux/x86_64.zig"),
-    .aarch64 => @import("linux/arm64.zig"),
-    .arm, .thumb => @import("linux/arm-eabi.zig"),
-    .riscv64 => @import("linux/riscv64.zig"),
-    .sparcv9 => @import("linux/sparc64.zig"),
-    .mips, .mipsel => @import("linux/mips.zig"),
-    .powerpc => @import("linux/powerpc.zig"),
-    .powerpc64, .powerpc64le => @import("linux/powerpc64.zig"),
-    else => struct {},
-};
-
-pub usingnamespace @import("linux/netlink.zig");
-pub usingnamespace @import("linux/prctl.zig");
-pub usingnamespace @import("linux/securebits.zig");
-pub usingnamespace @import("linux/xdp.zig");
-
-const is_mips = arch.isMIPS();
-const is_ppc = arch.isPPC();
-const is_ppc64 = arch.isPPC64();
-const is_sparc = arch.isSPARC();
-
-pub const pid_t = i32;
-pub const fd_t = i32;
-pub const uid_t = u32;
-pub const gid_t = u32;
-pub const clock_t = isize;
-
-pub const NAME_MAX = 255;
-pub const PATH_MAX = 4096;
-pub const IOV_MAX = 1024;
-
-/// Largest hardware address length
-/// e.g. a mac address is a type of hardware address
-pub const MAX_ADDR_LEN = 32;
-
-pub const STDIN_FILENO = 0;
-pub const STDOUT_FILENO = 1;
-pub const STDERR_FILENO = 2;
-
-/// Special value used to indicate openat should use the current working directory
-pub const AT_FDCWD = -100;
-
-/// Do not follow symbolic links
-pub const AT_SYMLINK_NOFOLLOW = 0x100;
-
-/// Remove directory instead of unlinking file
-pub const AT_REMOVEDIR = 0x200;
-
-/// Follow symbolic links.
-pub const AT_SYMLINK_FOLLOW = 0x400;
-
-/// Suppress terminal automount traversal
-pub const AT_NO_AUTOMOUNT = 0x800;
-
-/// Allow empty relative pathname
-pub const AT_EMPTY_PATH = 0x1000;
-
-/// Type of synchronisation required from statx()
-pub const AT_STATX_SYNC_TYPE = 0x6000;
-
-/// - Do whatever stat() does
-pub const AT_STATX_SYNC_AS_STAT = 0x0000;
-
-/// - Force the attributes to be sync'd with the server
-pub const AT_STATX_FORCE_SYNC = 0x2000;
-
-/// - Don't sync attributes with the server
-pub const AT_STATX_DONT_SYNC = 0x4000;
-
-/// Apply to the entire subtree
-pub const AT_RECURSIVE = 0x8000;
-
-/// Default is extend size
-pub const FALLOC_FL_KEEP_SIZE = 0x01;
-
-/// De-allocates range
-pub const FALLOC_FL_PUNCH_HOLE = 0x02;
-
-/// Reserved codepoint
-pub const FALLOC_FL_NO_HIDE_STALE = 0x04;
-
-/// Removes a range of a file without leaving a hole in the file
-pub const FALLOC_FL_COLLAPSE_RANGE = 0x08;
-
-/// Converts a range of file to zeros preferably without issuing data IO
-pub const FALLOC_FL_ZERO_RANGE = 0x10;
-
-/// Inserts space within the file size without overwriting any existing data
-pub const FALLOC_FL_INSERT_RANGE = 0x20;
-
-/// Unshares shared blocks within the file size without overwriting any existing data
-pub const FALLOC_FL_UNSHARE_RANGE = 0x40;
-
-pub const FUTEX_WAIT = 0;
-pub const FUTEX_WAKE = 1;
-pub const FUTEX_FD = 2;
-pub const FUTEX_REQUEUE = 3;
-pub const FUTEX_CMP_REQUEUE = 4;
-pub const FUTEX_WAKE_OP = 5;
-pub const FUTEX_LOCK_PI = 6;
-pub const FUTEX_UNLOCK_PI = 7;
-pub const FUTEX_TRYLOCK_PI = 8;
-pub const FUTEX_WAIT_BITSET = 9;
-pub const FUTEX_WAKE_BITSET = 10;
-pub const FUTEX_WAIT_REQUEUE_PI = 11;
-pub const FUTEX_CMP_REQUEUE_PI = 12;
-
-pub const FUTEX_PRIVATE_FLAG = 128;
-
-pub const FUTEX_CLOCK_REALTIME = 256;
-
-/// page can not be accessed
-pub const PROT_NONE = 0x0;
-
-/// page can be read
-pub const PROT_READ = 0x1;
-
-/// page can be written
-pub const PROT_WRITE = 0x2;
-
-/// page can be executed
-pub const PROT_EXEC = 0x4;
-
-/// page may be used for atomic ops
-pub const PROT_SEM = switch (arch) {
-    // TODO: also xtensa
-    .mips, .mipsel, .mips64, .mips64el => 0x10,
-    else => 0x8,
-};
-
-/// mprotect flag: extend change to start of growsdown vma
-pub const PROT_GROWSDOWN = 0x01000000;
-
-/// mprotect flag: extend change to end of growsup vma
-pub const PROT_GROWSUP = 0x02000000;
-
-/// Share changes
-pub const MAP_SHARED = 0x01;
-
-/// Changes are private
-pub const MAP_PRIVATE = 0x02;
-
-/// share + validate extension flags
-pub const MAP_SHARED_VALIDATE = 0x03;
-
-/// Mask for type of mapping
-pub const MAP_TYPE = 0x0f;
-
-/// Interpret addr exactly
-pub const MAP_FIXED = 0x10;
-
-/// don't use a file
-pub const MAP_ANONYMOUS = if (is_mips) 0x800 else 0x20;
-
-// MAP_ 0x0100 - 0x4000 flags are per architecture
-
-/// populate (prefault) pagetables
-pub const MAP_POPULATE = if (is_mips) 0x10000 else 0x8000;
-
-/// do not block on IO
-pub const MAP_NONBLOCK = if (is_mips) 0x20000 else 0x10000;
-
-/// give out an address that is best suited for process/thread stacks
-pub const MAP_STACK = if (is_mips) 0x40000 else 0x20000;
-
-/// create a huge page mapping
-pub const MAP_HUGETLB = if (is_mips) 0x80000 else 0x40000;
-
-/// perform synchronous page faults for the mapping
-pub const MAP_SYNC = 0x80000;
-
-/// MAP_FIXED which doesn't unmap underlying mapping
-pub const MAP_FIXED_NOREPLACE = 0x100000;
-
-/// For anonymous mmap, memory could be uninitialized
-pub const MAP_UNINITIALIZED = 0x4000000;
-
-pub const FD_CLOEXEC = 1;
-
-pub const F_OK = 0;
-pub const X_OK = 1;
-pub const W_OK = 2;
-pub const R_OK = 4;
-
-pub const WNOHANG = 1;
-pub const WUNTRACED = 2;
-pub const WSTOPPED = 2;
-pub const WEXITED = 4;
-pub const WCONTINUED = 8;
-pub const WNOWAIT = 0x1000000;
-
-// waitid id types
-pub const P = enum(c_uint) {
-    ALL = 0,
-    PID = 1,
-    PGID = 2,
-    PIDFD = 3,
-    _,
-};
-
-pub usingnamespace if (is_mips)
-    struct {
-        pub const SA_NOCLDSTOP = 1;
-        pub const SA_NOCLDWAIT = 0x10000;
-        pub const SA_SIGINFO = 8;
-        pub const SA_RESTART = 0x10000000;
-        pub const SA_RESETHAND = 0x80000000;
-        pub const SA_ONSTACK = 0x08000000;
-        pub const SA_NODEFER = 0x40000000;
-        pub const SA_RESTORER = 0x04000000;
-
-        pub const SIG_BLOCK = 1;
-        pub const SIG_UNBLOCK = 2;
-        pub const SIG_SETMASK = 3;
-    }
-else if (is_sparc)
-    struct {
-        pub const SA_NOCLDSTOP = 0x8;
-        pub const SA_NOCLDWAIT = 0x100;
-        pub const SA_SIGINFO = 0x200;
-        pub const SA_RESTART = 0x2;
-        pub const SA_RESETHAND = 0x4;
-        pub const SA_ONSTACK = 0x1;
-        pub const SA_NODEFER = 0x20;
-        pub const SA_RESTORER = 0x04000000;
-
-        pub const SIG_BLOCK = 1;
-        pub const SIG_UNBLOCK = 2;
-        pub const SIG_SETMASK = 4;
-    }
-else
-    struct {
-        pub const SA_NOCLDSTOP = 1;
-        pub const SA_NOCLDWAIT = 2;
-        pub const SA_SIGINFO = 4;
-        pub const SA_RESTART = 0x10000000;
-        pub const SA_RESETHAND = 0x80000000;
-        pub const SA_ONSTACK = 0x08000000;
-        pub const SA_NODEFER = 0x40000000;
-        pub const SA_RESTORER = 0x04000000;
-
-        pub const SIG_BLOCK = 0;
-        pub const SIG_UNBLOCK = 1;
-        pub const SIG_SETMASK = 2;
-    };
-
-pub usingnamespace if (is_sparc) struct {
-    pub const SIGHUP = 1;
-    pub const SIGINT = 2;
-    pub const SIGQUIT = 3;
-    pub const SIGILL = 4;
-    pub const SIGTRAP = 5;
-    pub const SIGABRT = 6;
-    pub const SIGEMT = 7;
-    pub const SIGFPE = 8;
-    pub const SIGKILL = 9;
-    pub const SIGBUS = 10;
-    pub const SIGSEGV = 11;
-    pub const SIGSYS = 12;
-    pub const SIGPIPE = 13;
-    pub const SIGALRM = 14;
-    pub const SIGTERM = 15;
-    pub const SIGURG = 16;
-    pub const SIGSTOP = 17;
-    pub const SIGTSTP = 18;
-    pub const SIGCONT = 19;
-    pub const SIGCHLD = 20;
-    pub const SIGTTIN = 21;
-    pub const SIGTTOU = 22;
-    pub const SIGPOLL = 23;
-    pub const SIGXCPU = 24;
-    pub const SIGXFSZ = 25;
-    pub const SIGVTALRM = 26;
-    pub const SIGPROF = 27;
-    pub const SIGWINCH = 28;
-    pub const SIGLOST = 29;
-    pub const SIGUSR1 = 30;
-    pub const SIGUSR2 = 31;
-    pub const SIGIOT = SIGABRT;
-    pub const SIGCLD = SIGCHLD;
-    pub const SIGPWR = SIGLOST;
-    pub const SIGIO = SIGPOLL;
-} else struct {
-    pub const SIGHUP = 1;
-    pub const SIGINT = 2;
-    pub const SIGQUIT = 3;
-    pub const SIGILL = 4;
-    pub const SIGTRAP = 5;
-    pub const SIGABRT = 6;
-    pub const SIGIOT = SIGABRT;
-    pub const SIGBUS = 7;
-    pub const SIGFPE = 8;
-    pub const SIGKILL = 9;
-    pub const SIGUSR1 = 10;
-    pub const SIGSEGV = 11;
-    pub const SIGUSR2 = 12;
-    pub const SIGPIPE = 13;
-    pub const SIGALRM = 14;
-    pub const SIGTERM = 15;
-    pub const SIGSTKFLT = 16;
-    pub const SIGCHLD = 17;
-    pub const SIGCONT = 18;
-    pub const SIGSTOP = 19;
-    pub const SIGTSTP = 20;
-    pub const SIGTTIN = 21;
-    pub const SIGTTOU = 22;
-    pub const SIGURG = 23;
-    pub const SIGXCPU = 24;
-    pub const SIGXFSZ = 25;
-    pub const SIGVTALRM = 26;
-    pub const SIGPROF = 27;
-    pub const SIGWINCH = 28;
-    pub const SIGIO = 29;
-    pub const SIGPOLL = 29;
-    pub const SIGPWR = 30;
-    pub const SIGSYS = 31;
-    pub const SIGUNUSED = SIGSYS;
-};
-
-pub const O_RDONLY = 0o0;
-pub const O_WRONLY = 0o1;
-pub const O_RDWR = 0o2;
-
-pub const kernel_rwf = u32;
-
-/// high priority request, poll if possible
-pub const RWF_HIPRI: kernel_rwf = 0x00000001;
-
-/// per-IO O_DSYNC
-pub const RWF_DSYNC: kernel_rwf = 0x00000002;
-
-/// per-IO O_SYNC
-pub const RWF_SYNC: kernel_rwf = 0x00000004;
-
-/// per-IO, return -EAGAIN if operation would block
-pub const RWF_NOWAIT: kernel_rwf = 0x00000008;
-
-/// per-IO O_APPEND
-pub const RWF_APPEND: kernel_rwf = 0x00000010;
-
-pub const SEEK_SET = 0;
-pub const SEEK_CUR = 1;
-pub const SEEK_END = 2;
-
-pub const SHUT_RD = 0;
-pub const SHUT_WR = 1;
-pub const SHUT_RDWR = 2;
-
-pub const SOCK_STREAM = if (is_mips) 2 else 1;
-pub const SOCK_DGRAM = if (is_mips) 1 else 2;
-pub const SOCK_RAW = 3;
-pub const SOCK_RDM = 4;
-pub const SOCK_SEQPACKET = 5;
-pub const SOCK_DCCP = 6;
-pub const SOCK_PACKET = 10;
-pub const SOCK_CLOEXEC = 0o2000000;
-pub const SOCK_NONBLOCK = if (is_mips) 0o200 else 0o4000;
-
-pub const PF_UNSPEC = 0;
-pub const PF_LOCAL = 1;
-pub const PF_UNIX = PF_LOCAL;
-pub const PF_FILE = PF_LOCAL;
-pub const PF_INET = 2;
-pub const PF_AX25 = 3;
-pub const PF_IPX = 4;
-pub const PF_APPLETALK = 5;
-pub const PF_NETROM = 6;
-pub const PF_BRIDGE = 7;
-pub const PF_ATMPVC = 8;
-pub const PF_X25 = 9;
-pub const PF_INET6 = 10;
-pub const PF_ROSE = 11;
-pub const PF_DECnet = 12;
-pub const PF_NETBEUI = 13;
-pub const PF_SECURITY = 14;
-pub const PF_KEY = 15;
-pub const PF_NETLINK = 16;
-pub const PF_ROUTE = PF_NETLINK;
-pub const PF_PACKET = 17;
-pub const PF_ASH = 18;
-pub const PF_ECONET = 19;
-pub const PF_ATMSVC = 20;
-pub const PF_RDS = 21;
-pub const PF_SNA = 22;
-pub const PF_IRDA = 23;
-pub const PF_PPPOX = 24;
-pub const PF_WANPIPE = 25;
-pub const PF_LLC = 26;
-pub const PF_IB = 27;
-pub const PF_MPLS = 28;
-pub const PF_CAN = 29;
-pub const PF_TIPC = 30;
-pub const PF_BLUETOOTH = 31;
-pub const PF_IUCV = 32;
-pub const PF_RXRPC = 33;
-pub const PF_ISDN = 34;
-pub const PF_PHONET = 35;
-pub const PF_IEEE802154 = 36;
-pub const PF_CAIF = 37;
-pub const PF_ALG = 38;
-pub const PF_NFC = 39;
-pub const PF_VSOCK = 40;
-pub const PF_KCM = 41;
-pub const PF_QIPCRTR = 42;
-pub const PF_SMC = 43;
-pub const PF_XDP = 44;
-pub const PF_MAX = 45;
-
-pub const AF_UNSPEC = PF_UNSPEC;
-pub const AF_LOCAL = PF_LOCAL;
-pub const AF_UNIX = AF_LOCAL;
-pub const AF_FILE = AF_LOCAL;
-pub const AF_INET = PF_INET;
-pub const AF_AX25 = PF_AX25;
-pub const AF_IPX = PF_IPX;
-pub const AF_APPLETALK = PF_APPLETALK;
-pub const AF_NETROM = PF_NETROM;
-pub const AF_BRIDGE = PF_BRIDGE;
-pub const AF_ATMPVC = PF_ATMPVC;
-pub const AF_X25 = PF_X25;
-pub const AF_INET6 = PF_INET6;
-pub const AF_ROSE = PF_ROSE;
-pub const AF_DECnet = PF_DECnet;
-pub const AF_NETBEUI = PF_NETBEUI;
-pub const AF_SECURITY = PF_SECURITY;
-pub const AF_KEY = PF_KEY;
-pub const AF_NETLINK = PF_NETLINK;
-pub const AF_ROUTE = PF_ROUTE;
-pub const AF_PACKET = PF_PACKET;
-pub const AF_ASH = PF_ASH;
-pub const AF_ECONET = PF_ECONET;
-pub const AF_ATMSVC = PF_ATMSVC;
-pub const AF_RDS = PF_RDS;
-pub const AF_SNA = PF_SNA;
-pub const AF_IRDA = PF_IRDA;
-pub const AF_PPPOX = PF_PPPOX;
-pub const AF_WANPIPE = PF_WANPIPE;
-pub const AF_LLC = PF_LLC;
-pub const AF_IB = PF_IB;
-pub const AF_MPLS = PF_MPLS;
-pub const AF_CAN = PF_CAN;
-pub const AF_TIPC = PF_TIPC;
-pub const AF_BLUETOOTH = PF_BLUETOOTH;
-pub const AF_IUCV = PF_IUCV;
-pub const AF_RXRPC = PF_RXRPC;
-pub const AF_ISDN = PF_ISDN;
-pub const AF_PHONET = PF_PHONET;
-pub const AF_IEEE802154 = PF_IEEE802154;
-pub const AF_CAIF = PF_CAIF;
-pub const AF_ALG = PF_ALG;
-pub const AF_NFC = PF_NFC;
-pub const AF_VSOCK = PF_VSOCK;
-pub const AF_KCM = PF_KCM;
-pub const AF_QIPCRTR = PF_QIPCRTR;
-pub const AF_SMC = PF_SMC;
-pub const AF_XDP = PF_XDP;
-pub const AF_MAX = PF_MAX;
-
-pub usingnamespace if (is_mips)
-    struct {}
-else if (is_ppc or is_ppc64)
-    struct {
-        pub const SO_DEBUG = 1;
-        pub const SO_REUSEADDR = 2;
-        pub const SO_TYPE = 3;
-        pub const SO_ERROR = 4;
-        pub const SO_DONTROUTE = 5;
-        pub const SO_BROADCAST = 6;
-        pub const SO_SNDBUF = 7;
-        pub const SO_RCVBUF = 8;
-        pub const SO_KEEPALIVE = 9;
-        pub const SO_OOBINLINE = 10;
-        pub const SO_NO_CHECK = 11;
-        pub const SO_PRIORITY = 12;
-        pub const SO_LINGER = 13;
-        pub const SO_BSDCOMPAT = 14;
-        pub const SO_REUSEPORT = 15;
-        pub const SO_RCVLOWAT = 16;
-        pub const SO_SNDLOWAT = 17;
-        pub const SO_RCVTIMEO = 18;
-        pub const SO_SNDTIMEO = 19;
-        pub const SO_PASSCRED = 20;
-        pub const SO_PEERCRED = 21;
-        pub const SO_ACCEPTCONN = 30;
-        pub const SO_PEERSEC = 31;
-        pub const SO_SNDBUFFORCE = 32;
-        pub const SO_RCVBUFFORCE = 33;
-        pub const SO_PROTOCOL = 38;
-        pub const SO_DOMAIN = 39;
-    }
-else
-    struct {
-        pub const SO_DEBUG = 1;
-        pub const SO_REUSEADDR = 2;
-        pub const SO_TYPE = 3;
-        pub const SO_ERROR = 4;
-        pub const SO_DONTROUTE = 5;
-        pub const SO_BROADCAST = 6;
-        pub const SO_SNDBUF = 7;
-        pub const SO_RCVBUF = 8;
-        pub const SO_KEEPALIVE = 9;
-        pub const SO_OOBINLINE = 10;
-        pub const SO_NO_CHECK = 11;
-        pub const SO_PRIORITY = 12;
-        pub const SO_LINGER = 13;
-        pub const SO_BSDCOMPAT = 14;
-        pub const SO_REUSEPORT = 15;
-        pub const SO_PASSCRED = 16;
-        pub const SO_PEERCRED = 17;
-        pub const SO_RCVLOWAT = 18;
-        pub const SO_SNDLOWAT = 19;
-        pub const SO_RCVTIMEO = 20;
-        pub const SO_SNDTIMEO = 21;
-        pub const SO_ACCEPTCONN = 30;
-        pub const SO_PEERSEC = 31;
-        pub const SO_SNDBUFFORCE = 32;
-        pub const SO_RCVBUFFORCE = 33;
-        pub const SO_PROTOCOL = 38;
-        pub const SO_DOMAIN = 39;
-    };
-
-pub const SO_SECURITY_AUTHENTICATION = 22;
-pub const SO_SECURITY_ENCRYPTION_TRANSPORT = 23;
-pub const SO_SECURITY_ENCRYPTION_NETWORK = 24;
-
-pub const SO_BINDTODEVICE = 25;
-
-pub const SO_ATTACH_FILTER = 26;
-pub const SO_DETACH_FILTER = 27;
-pub const SO_GET_FILTER = SO_ATTACH_FILTER;
-
-pub const SO_PEERNAME = 28;
-pub const SO_TIMESTAMP_OLD = 29;
-pub const SO_PASSSEC = 34;
-pub const SO_TIMESTAMPNS_OLD = 35;
-pub const SO_MARK = 36;
-pub const SO_TIMESTAMPING_OLD = 37;
-
-pub const SO_RXQ_OVFL = 40;
-pub const SO_WIFI_STATUS = 41;
-pub const SCM_WIFI_STATUS = SO_WIFI_STATUS;
-pub const SO_PEEK_OFF = 42;
-pub const SO_NOFCS = 43;
-pub const SO_LOCK_FILTER = 44;
-pub const SO_SELECT_ERR_QUEUE = 45;
-pub const SO_BUSY_POLL = 46;
-pub const SO_MAX_PACING_RATE = 47;
-pub const SO_BPF_EXTENSIONS = 48;
-pub const SO_INCOMING_CPU = 49;
-pub const SO_ATTACH_BPF = 50;
-pub const SO_DETACH_BPF = SO_DETACH_FILTER;
-pub const SO_ATTACH_REUSEPORT_CBPF = 51;
-pub const SO_ATTACH_REUSEPORT_EBPF = 52;
-pub const SO_CNX_ADVICE = 53;
-pub const SCM_TIMESTAMPING_OPT_STATS = 54;
-pub const SO_MEMINFO = 55;
-pub const SO_INCOMING_NAPI_ID = 56;
-pub const SO_COOKIE = 57;
-pub const SCM_TIMESTAMPING_PKTINFO = 58;
-pub const SO_PEERGROUPS = 59;
-pub const SO_ZEROCOPY = 60;
-pub const SO_TXTIME = 61;
-pub const SCM_TXTIME = SO_TXTIME;
-pub const SO_BINDTOIFINDEX = 62;
-pub const SO_TIMESTAMP_NEW = 63;
-pub const SO_TIMESTAMPNS_NEW = 64;
-pub const SO_TIMESTAMPING_NEW = 65;
-pub const SO_RCVTIMEO_NEW = 66;
-pub const SO_SNDTIMEO_NEW = 67;
-pub const SO_DETACH_REUSEPORT_BPF = 68;
-
-pub const SOL_SOCKET = if (is_mips) 65535 else 1;
-
-pub const SOL_IP = 0;
-pub const SOL_IPV6 = 41;
-pub const SOL_ICMPV6 = 58;
-
-pub const SOL_RAW = 255;
-pub const SOL_DECNET = 261;
-pub const SOL_X25 = 262;
-pub const SOL_PACKET = 263;
-pub const SOL_ATM = 264;
-pub const SOL_AAL = 265;
-pub const SOL_IRDA = 266;
-pub const SOL_NETBEUI = 267;
-pub const SOL_LLC = 268;
-pub const SOL_DCCP = 269;
-pub const SOL_NETLINK = 270;
-pub const SOL_TIPC = 271;
-pub const SOL_RXRPC = 272;
-pub const SOL_PPPOL2TP = 273;
-pub const SOL_BLUETOOTH = 274;
-pub const SOL_PNPIPE = 275;
-pub const SOL_RDS = 276;
-pub const SOL_IUCV = 277;
-pub const SOL_CAIF = 278;
-pub const SOL_ALG = 279;
-pub const SOL_NFC = 280;
-pub const SOL_KCM = 281;
-pub const SOL_TLS = 282;
-pub const SOL_XDP = 283;
-
-pub const SOMAXCONN = 128;
-
-pub const IP_TOS = 1;
-pub const IP_TTL = 2;
-pub const IP_HDRINCL = 3;
-pub const IP_OPTIONS = 4;
-pub const IP_ROUTER_ALERT = 5;
-pub const IP_RECVOPTS = 6;
-pub const IP_RETOPTS = 7;
-pub const IP_PKTINFO = 8;
-pub const IP_PKTOPTIONS = 9;
-pub const IP_PMTUDISC = 10;
-pub const IP_MTU_DISCOVER = 10;
-pub const IP_RECVERR = 11;
-pub const IP_RECVTTL = 12;
-pub const IP_RECVTOS = 13;
-pub const IP_MTU = 14;
-pub const IP_FREEBIND = 15;
-pub const IP_IPSEC_POLICY = 16;
-pub const IP_XFRM_POLICY = 17;
-pub const IP_PASSSEC = 18;
-pub const IP_TRANSPARENT = 19;
-pub const IP_ORIGDSTADDR = 20;
-pub const IP_RECVORIGDSTADDR = IP_ORIGDSTADDR;
-pub const IP_MINTTL = 21;
-pub const IP_NODEFRAG = 22;
-pub const IP_CHECKSUM = 23;
-pub const IP_BIND_ADDRESS_NO_PORT = 24;
-pub const IP_RECVFRAGSIZE = 25;
-pub const IP_MULTICAST_IF = 32;
-pub const IP_MULTICAST_TTL = 33;
-pub const IP_MULTICAST_LOOP = 34;
-pub const IP_ADD_MEMBERSHIP = 35;
-pub const IP_DROP_MEMBERSHIP = 36;
-pub const IP_UNBLOCK_SOURCE = 37;
-pub const IP_BLOCK_SOURCE = 38;
-pub const IP_ADD_SOURCE_MEMBERSHIP = 39;
-pub const IP_DROP_SOURCE_MEMBERSHIP = 40;
-pub const IP_MSFILTER = 41;
-pub const IP_MULTICAST_ALL = 49;
-pub const IP_UNICAST_IF = 50;
-
-pub const IP_RECVRETOPTS = IP_RETOPTS;
-
-pub const IP_PMTUDISC_DONT = 0;
-pub const IP_PMTUDISC_WANT = 1;
-pub const IP_PMTUDISC_DO = 2;
-pub const IP_PMTUDISC_PROBE = 3;
-pub const IP_PMTUDISC_INTERFACE = 4;
-pub const IP_PMTUDISC_OMIT = 5;
-
-pub const IP_DEFAULT_MULTICAST_TTL = 1;
-pub const IP_DEFAULT_MULTICAST_LOOP = 1;
-pub const IP_MAX_MEMBERSHIPS = 20;
-
-// IPv6 socket options
-
-pub const IPV6_ADDRFORM = 1;
-pub const IPV6_2292PKTINFO = 2;
-pub const IPV6_2292HOPOPTS = 3;
-pub const IPV6_2292DSTOPTS = 4;
-pub const IPV6_2292RTHDR = 5;
-pub const IPV6_2292PKTOPTIONS = 6;
-pub const IPV6_CHECKSUM = 7;
-pub const IPV6_2292HOPLIMIT = 8;
-pub const IPV6_NEXTHOP = 9;
-pub const IPV6_AUTHHDR = 10;
-pub const IPV6_FLOWINFO = 11;
-
-pub const IPV6_UNICAST_HOPS = 16;
-pub const IPV6_MULTICAST_IF = 17;
-pub const IPV6_MULTICAST_HOPS = 18;
-pub const IPV6_MULTICAST_LOOP = 19;
-pub const IPV6_ADD_MEMBERSHIP = 20;
-pub const IPV6_DROP_MEMBERSHIP = 21;
-pub const IPV6_ROUTER_ALERT = 22;
-pub const IPV6_MTU_DISCOVER = 23;
-pub const IPV6_MTU = 24;
-pub const IPV6_RECVERR = 25;
-pub const IPV6_V6ONLY = 26;
-pub const IPV6_JOIN_ANYCAST = 27;
-pub const IPV6_LEAVE_ANYCAST = 28;
-
-// IPV6_MTU_DISCOVER values
-pub const IPV6_PMTUDISC_DONT = 0;
-pub const IPV6_PMTUDISC_WANT = 1;
-pub const IPV6_PMTUDISC_DO = 2;
-pub const IPV6_PMTUDISC_PROBE = 3;
-pub const IPV6_PMTUDISC_INTERFACE = 4;
-pub const IPV6_PMTUDISC_OMIT = 5;
-
-// Flowlabel
-pub const IPV6_FLOWLABEL_MGR = 32;
-pub const IPV6_FLOWINFO_SEND = 33;
-pub const IPV6_IPSEC_POLICY = 34;
-pub const IPV6_XFRM_POLICY = 35;
-pub const IPV6_HDRINCL = 36;
-
-// Advanced API (RFC3542) (1)
-pub const IPV6_RECVPKTINFO = 49;
-pub const IPV6_PKTINFO = 50;
-pub const IPV6_RECVHOPLIMIT = 51;
-pub const IPV6_HOPLIMIT = 52;
-pub const IPV6_RECVHOPOPTS = 53;
-pub const IPV6_HOPOPTS = 54;
-pub const IPV6_RTHDRDSTOPTS = 55;
-pub const IPV6_RECVRTHDR = 56;
-pub const IPV6_RTHDR = 57;
-pub const IPV6_RECVDSTOPTS = 58;
-pub const IPV6_DSTOPTS = 59;
-pub const IPV6_RECVPATHMTU = 60;
-pub const IPV6_PATHMTU = 61;
-pub const IPV6_DONTFRAG = 62;
-
-// Advanced API (RFC3542) (2)
-pub const IPV6_RECVTCLASS = 66;
-pub const IPV6_TCLASS = 67;
-
-pub const IPV6_AUTOFLOWLABEL = 70;
-
-// RFC5014: Source address selection
-pub const IPV6_ADDR_PREFERENCES = 72;
-
-pub const IPV6_PREFER_SRC_TMP = 0x0001;
-pub const IPV6_PREFER_SRC_PUBLIC = 0x0002;
-pub const IPV6_PREFER_SRC_PUBTMP_DEFAULT = 0x0100;
-pub const IPV6_PREFER_SRC_COA = 0x0004;
-pub const IPV6_PREFER_SRC_HOME = 0x0400;
-pub const IPV6_PREFER_SRC_CGA = 0x0008;
-pub const IPV6_PREFER_SRC_NONCGA = 0x0800;
-
-// RFC5082: Generalized Ttl Security Mechanism
-pub const IPV6_MINHOPCOUNT = 73;
-
-pub const IPV6_ORIGDSTADDR = 74;
-pub const IPV6_RECVORIGDSTADDR = IPV6_ORIGDSTADDR;
-pub const IPV6_TRANSPARENT = 75;
-pub const IPV6_UNICAST_IF = 76;
-pub const IPV6_RECVFRAGSIZE = 77;
-pub const IPV6_FREEBIND = 78;
-
-pub const MSG_OOB = 0x0001;
-pub const MSG_PEEK = 0x0002;
-pub const MSG_DONTROUTE = 0x0004;
-pub const MSG_CTRUNC = 0x0008;
-pub const MSG_PROXY = 0x0010;
-pub const MSG_TRUNC = 0x0020;
-pub const MSG_DONTWAIT = 0x0040;
-pub const MSG_EOR = 0x0080;
-pub const MSG_WAITALL = 0x0100;
-pub const MSG_FIN = 0x0200;
-pub const MSG_SYN = 0x0400;
-pub const MSG_CONFIRM = 0x0800;
-pub const MSG_RST = 0x1000;
-pub const MSG_ERRQUEUE = 0x2000;
-pub const MSG_NOSIGNAL = 0x4000;
-pub const MSG_MORE = 0x8000;
-pub const MSG_WAITFORONE = 0x10000;
-pub const MSG_BATCH = 0x40000;
-pub const MSG_ZEROCOPY = 0x4000000;
-pub const MSG_FASTOPEN = 0x20000000;
-pub const MSG_CMSG_CLOEXEC = 0x40000000;
-
-pub const DT_UNKNOWN = 0;
-pub const DT_FIFO = 1;
-pub const DT_CHR = 2;
-pub const DT_DIR = 4;
-pub const DT_BLK = 6;
-pub const DT_REG = 8;
-pub const DT_LNK = 10;
-pub const DT_SOCK = 12;
-pub const DT_WHT = 14;
-
-pub const TCGETS = if (is_mips) 0x540D else 0x5401;
-pub const TCSETS = 0x5402;
-pub const TCSETSW = 0x5403;
-pub const TCSETSF = 0x5404;
-pub const TCGETA = 0x5405;
-pub const TCSETA = 0x5406;
-pub const TCSETAW = 0x5407;
-pub const TCSETAF = 0x5408;
-pub const TCSBRK = 0x5409;
-pub const TCXONC = 0x540A;
-pub const TCFLSH = 0x540B;
-pub const TIOCEXCL = 0x540C;
-pub const TIOCNXCL = 0x540D;
-pub const TIOCSCTTY = 0x540E;
-pub const TIOCGPGRP = 0x540F;
-pub const TIOCSPGRP = 0x5410;
-pub const TIOCOUTQ = if (is_mips) 0x7472 else 0x5411;
-pub const TIOCSTI = 0x5412;
-pub const TIOCGWINSZ = if (is_mips or is_ppc64) 0x40087468 else 0x5413;
-pub const TIOCSWINSZ = if (is_mips or is_ppc64) 0x80087467 else 0x5414;
-pub const TIOCMGET = 0x5415;
-pub const TIOCMBIS = 0x5416;
-pub const TIOCMBIC = 0x5417;
-pub const TIOCMSET = 0x5418;
-pub const TIOCGSOFTCAR = 0x5419;
-pub const TIOCSSOFTCAR = 0x541A;
-pub const FIONREAD = if (is_mips) 0x467F else 0x541B;
-pub const TIOCINQ = FIONREAD;
-pub const TIOCLINUX = 0x541C;
-pub const TIOCCONS = 0x541D;
-pub const TIOCGSERIAL = 0x541E;
-pub const TIOCSSERIAL = 0x541F;
-pub const TIOCPKT = 0x5420;
-pub const FIONBIO = 0x5421;
-pub const TIOCNOTTY = 0x5422;
-pub const TIOCSETD = 0x5423;
-pub const TIOCGETD = 0x5424;
-pub const TCSBRKP = 0x5425;
-pub const TIOCSBRK = 0x5427;
-pub const TIOCCBRK = 0x5428;
-pub const TIOCGSID = 0x5429;
-pub const TIOCGRS485 = 0x542E;
-pub const TIOCSRS485 = 0x542F;
-pub const TIOCGPTN = 0x80045430;
-pub const TIOCSPTLCK = 0x40045431;
-pub const TIOCGDEV = 0x80045432;
-pub const TCGETX = 0x5432;
-pub const TCSETX = 0x5433;
-pub const TCSETXF = 0x5434;
-pub const TCSETXW = 0x5435;
-pub const TIOCSIG = 0x40045436;
-pub const TIOCVHANGUP = 0x5437;
-pub const TIOCGPKT = 0x80045438;
-pub const TIOCGPTLCK = 0x80045439;
-pub const TIOCGEXCL = 0x80045440;
-
-pub const EPOLL_CLOEXEC = O_CLOEXEC;
-
-pub const EPOLL_CTL_ADD = 1;
-pub const EPOLL_CTL_DEL = 2;
-pub const EPOLL_CTL_MOD = 3;
-
-pub const EPOLLIN = 0x001;
-pub const EPOLLPRI = 0x002;
-pub const EPOLLOUT = 0x004;
-pub const EPOLLRDNORM = 0x040;
-pub const EPOLLRDBAND = 0x080;
-pub const EPOLLWRNORM = if (is_mips) 0x004 else 0x100;
-pub const EPOLLWRBAND = if (is_mips) 0x100 else 0x200;
-pub const EPOLLMSG = 0x400;
-pub const EPOLLERR = 0x008;
-pub const EPOLLHUP = 0x010;
-pub const EPOLLRDHUP = 0x2000;
-pub const EPOLLEXCLUSIVE = (@as(u32, 1) << 28);
-pub const EPOLLWAKEUP = (@as(u32, 1) << 29);
-pub const EPOLLONESHOT = (@as(u32, 1) << 30);
-pub const EPOLLET = (@as(u32, 1) << 31);
-
-pub const CLOCK_REALTIME = 0;
-pub const CLOCK_MONOTONIC = 1;
-pub const CLOCK_PROCESS_CPUTIME_ID = 2;
-pub const CLOCK_THREAD_CPUTIME_ID = 3;
-pub const CLOCK_MONOTONIC_RAW = 4;
-pub const CLOCK_REALTIME_COARSE = 5;
-pub const CLOCK_MONOTONIC_COARSE = 6;
-pub const CLOCK_BOOTTIME = 7;
-pub const CLOCK_REALTIME_ALARM = 8;
-pub const CLOCK_BOOTTIME_ALARM = 9;
-pub const CLOCK_SGI_CYCLE = 10;
-pub const CLOCK_TAI = 11;
-
-pub const CSIGNAL = 0x000000ff;
-pub const CLONE_VM = 0x00000100;
-pub const CLONE_FS = 0x00000200;
-pub const CLONE_FILES = 0x00000400;
-pub const CLONE_SIGHAND = 0x00000800;
-pub const CLONE_PIDFD = 0x00001000;
-pub const CLONE_PTRACE = 0x00002000;
-pub const CLONE_VFORK = 0x00004000;
-pub const CLONE_PARENT = 0x00008000;
-pub const CLONE_THREAD = 0x00010000;
-pub const CLONE_NEWNS = 0x00020000;
-pub const CLONE_SYSVSEM = 0x00040000;
-pub const CLONE_SETTLS = 0x00080000;
-pub const CLONE_PARENT_SETTID = 0x00100000;
-pub const CLONE_CHILD_CLEARTID = 0x00200000;
-pub const CLONE_DETACHED = 0x00400000;
-pub const CLONE_UNTRACED = 0x00800000;
-pub const CLONE_CHILD_SETTID = 0x01000000;
-pub const CLONE_NEWCGROUP = 0x02000000;
-pub const CLONE_NEWUTS = 0x04000000;
-pub const CLONE_NEWIPC = 0x08000000;
-pub const CLONE_NEWUSER = 0x10000000;
-pub const CLONE_NEWPID = 0x20000000;
-pub const CLONE_NEWNET = 0x40000000;
-pub const CLONE_IO = 0x80000000;
-
-// Flags for the clone3() syscall.
-
-/// Clear any signal handler and reset to SIG_DFL.
-pub const CLONE_CLEAR_SIGHAND = 0x100000000;
-/// Clone into a specific cgroup given the right permissions.
-pub const CLONE_INTO_CGROUP = 0x200000000;
-
-// cloning flags intersect with CSIGNAL so can be used with unshare and clone3 syscalls only.
-
-/// New time namespace
-pub const CLONE_NEWTIME = 0x00000080;
-
-pub const EFD_SEMAPHORE = 1;
-pub const EFD_CLOEXEC = O_CLOEXEC;
-pub const EFD_NONBLOCK = O_NONBLOCK;
-
-pub const MS_RDONLY = 1;
-pub const MS_NOSUID = 2;
-pub const MS_NODEV = 4;
-pub const MS_NOEXEC = 8;
-pub const MS_SYNCHRONOUS = 16;
-pub const MS_REMOUNT = 32;
-pub const MS_MANDLOCK = 64;
-pub const MS_DIRSYNC = 128;
-pub const MS_NOATIME = 1024;
-pub const MS_NODIRATIME = 2048;
-pub const MS_BIND = 4096;
-pub const MS_MOVE = 8192;
-pub const MS_REC = 16384;
-pub const MS_SILENT = 32768;
-pub const MS_POSIXACL = (1 << 16);
-pub const MS_UNBINDABLE = (1 << 17);
-pub const MS_PRIVATE = (1 << 18);
-pub const MS_SLAVE = (1 << 19);
-pub const MS_SHARED = (1 << 20);
-pub const MS_RELATIME = (1 << 21);
-pub const MS_KERNMOUNT = (1 << 22);
-pub const MS_I_VERSION = (1 << 23);
-pub const MS_STRICTATIME = (1 << 24);
-pub const MS_LAZYTIME = (1 << 25);
-pub const MS_NOREMOTELOCK = (1 << 27);
-pub const MS_NOSEC = (1 << 28);
-pub const MS_BORN = (1 << 29);
-pub const MS_ACTIVE = (1 << 30);
-pub const MS_NOUSER = (1 << 31);
-
-pub const MS_RMT_MASK = (MS_RDONLY | MS_SYNCHRONOUS | MS_MANDLOCK | MS_I_VERSION | MS_LAZYTIME);
-
-pub const MS_MGC_VAL = 0xc0ed0000;
-pub const MS_MGC_MSK = 0xffff0000;
-
-pub const MNT_FORCE = 1;
-pub const MNT_DETACH = 2;
-pub const MNT_EXPIRE = 4;
-pub const UMOUNT_NOFOLLOW = 8;
-
-pub const IN_CLOEXEC = O_CLOEXEC;
-pub const IN_NONBLOCK = O_NONBLOCK;
-
-pub const IN_ACCESS = 0x00000001;
-pub const IN_MODIFY = 0x00000002;
-pub const IN_ATTRIB = 0x00000004;
-pub const IN_CLOSE_WRITE = 0x00000008;
-pub const IN_CLOSE_NOWRITE = 0x00000010;
-pub const IN_CLOSE = IN_CLOSE_WRITE | IN_CLOSE_NOWRITE;
-pub const IN_OPEN = 0x00000020;
-pub const IN_MOVED_FROM = 0x00000040;
-pub const IN_MOVED_TO = 0x00000080;
-pub const IN_MOVE = IN_MOVED_FROM | IN_MOVED_TO;
-pub const IN_CREATE = 0x00000100;
-pub const IN_DELETE = 0x00000200;
-pub const IN_DELETE_SELF = 0x00000400;
-pub const IN_MOVE_SELF = 0x00000800;
-pub const IN_ALL_EVENTS = 0x00000fff;
-
-pub const IN_UNMOUNT = 0x00002000;
-pub const IN_Q_OVERFLOW = 0x00004000;
-pub const IN_IGNORED = 0x00008000;
-
-pub const IN_ONLYDIR = 0x01000000;
-pub const IN_DONT_FOLLOW = 0x02000000;
-pub const IN_EXCL_UNLINK = 0x04000000;
-pub const IN_MASK_ADD = 0x20000000;
-
-pub const IN_ISDIR = 0x40000000;
-pub const IN_ONESHOT = 0x80000000;
-
-pub const S_IFMT = 0o170000;
-
-pub const S_IFDIR = 0o040000;
-pub const S_IFCHR = 0o020000;
-pub const S_IFBLK = 0o060000;
-pub const S_IFREG = 0o100000;
-pub const S_IFIFO = 0o010000;
-pub const S_IFLNK = 0o120000;
-pub const S_IFSOCK = 0o140000;
-
-pub const S_ISUID = 0o4000;
-pub const S_ISGID = 0o2000;
-pub const S_ISVTX = 0o1000;
-pub const S_IRUSR = 0o400;
-pub const S_IWUSR = 0o200;
-pub const S_IXUSR = 0o100;
-pub const S_IRWXU = 0o700;
-pub const S_IRGRP = 0o040;
-pub const S_IWGRP = 0o020;
-pub const S_IXGRP = 0o010;
-pub const S_IRWXG = 0o070;
-pub const S_IROTH = 0o004;
-pub const S_IWOTH = 0o002;
-pub const S_IXOTH = 0o001;
-pub const S_IRWXO = 0o007;
-
-pub fn S_ISREG(m: u32) bool {
-    return m & S_IFMT == S_IFREG;
-}
-
-pub fn S_ISDIR(m: u32) bool {
-    return m & S_IFMT == S_IFDIR;
-}
-
-pub fn S_ISCHR(m: u32) bool {
-    return m & S_IFMT == S_IFCHR;
-}
-
-pub fn S_ISBLK(m: u32) bool {
-    return m & S_IFMT == S_IFBLK;
-}
-
-pub fn S_ISFIFO(m: u32) bool {
-    return m & S_IFMT == S_IFIFO;
-}
-
-pub fn S_ISLNK(m: u32) bool {
-    return m & S_IFMT == S_IFLNK;
-}
-
-pub fn S_ISSOCK(m: u32) bool {
-    return m & S_IFMT == S_IFSOCK;
-}
-
-pub const UTIME_NOW = 0x3fffffff;
-pub const UTIME_OMIT = 0x3ffffffe;
-
-pub const TFD_NONBLOCK = O_NONBLOCK;
-pub const TFD_CLOEXEC = O_CLOEXEC;
-
-pub const TFD_TIMER_ABSTIME = 1;
-pub const TFD_TIMER_CANCEL_ON_SET = (1 << 1);
-
-pub fn WEXITSTATUS(s: u32) u8 {
-    return @intCast(u8, (s & 0xff00) >> 8);
-}
-pub fn WTERMSIG(s: u32) u32 {
-    return s & 0x7f;
-}
-pub fn WSTOPSIG(s: u32) u32 {
-    return WEXITSTATUS(s);
-}
-pub fn WIFEXITED(s: u32) bool {
-    return WTERMSIG(s) == 0;
-}
-pub fn WIFSTOPPED(s: u32) bool {
-    return @intCast(u16, ((s & 0xffff) *% 0x10001) >> 8) > 0x7f00;
-}
-pub fn WIFSIGNALED(s: u32) bool {
-    return (s & 0xffff) -% 1 < 0xff;
-}
-
-pub const winsize = extern struct {
-    ws_row: u16,
-    ws_col: u16,
-    ws_xpixel: u16,
-    ws_ypixel: u16,
-};
-
-/// NSIG is the total number of signals defined.
-/// As signal numbers are sequential, NSIG is one greater than the largest defined signal number.
-pub const NSIG = if (is_mips) 128 else 65;
-
-pub const sigset_t = [1024 / 32]u32;
-
-pub const all_mask: sigset_t = [_]u32{0xffffffff} ** sigset_t.len;
-pub const app_mask: sigset_t = [2]u32{ 0xfffffffc, 0x7fffffff } ++ [_]u32{0xffffffff} ** 30;
-
-pub const k_sigaction = switch (arch) {
-    .mips, .mipsel => extern struct {
-        flags: c_uint,
-        handler: ?fn (c_int) callconv(.C) void,
-        mask: [4]c_ulong,
-        restorer: fn () callconv(.C) void,
-    },
-    .mips64, .mips64el => extern struct {
-        flags: c_uint,
-        handler: ?fn (c_int) callconv(.C) void,
-        mask: [2]c_ulong,
-        restorer: fn () callconv(.C) void,
-    },
-    else => extern struct {
-        handler: ?fn (c_int) callconv(.C) void,
-        flags: c_ulong,
-        restorer: fn () callconv(.C) void,
-        mask: [2]c_uint,
-    },
-};
-
-/// Renamed from `sigaction` to `Sigaction` to avoid conflict with the syscall.
-pub const Sigaction = extern struct {
-    pub const handler_fn = fn (c_int) callconv(.C) void;
-    pub const sigaction_fn = fn (c_int, *const siginfo_t, ?*const c_void) callconv(.C) void;
-
-    handler: extern union {
-        handler: ?handler_fn,
-        sigaction: ?sigaction_fn,
-    },
-    mask: sigset_t,
-    flags: c_uint,
-    restorer: ?fn () callconv(.C) void = null,
-};
-
-pub const SIG_ERR = @intToPtr(?Sigaction.sigaction_fn, maxInt(usize));
-pub const SIG_DFL = @intToPtr(?Sigaction.sigaction_fn, 0);
-pub const SIG_IGN = @intToPtr(?Sigaction.sigaction_fn, 1);
-
-pub const empty_sigset = [_]u32{0} ** @typeInfo(sigset_t).Array.len;
-
-pub const SFD_CLOEXEC = O_CLOEXEC;
-pub const SFD_NONBLOCK = O_NONBLOCK;
-
-pub const signalfd_siginfo = extern struct {
-    signo: u32,
-    errno: i32,
-    code: i32,
-    pid: u32,
-    uid: uid_t,
-    fd: i32,
-    tid: u32,
-    band: u32,
-    overrun: u32,
-    trapno: u32,
-    status: i32,
-    int: i32,
-    ptr: u64,
-    utime: u64,
-    stime: u64,
-    addr: u64,
-    addr_lsb: u16,
-    __pad2: u16,
-    syscall: i32,
-    call_addr: u64,
-    arch: u32,
-    __pad: [28]u8,
-};
-
-pub const in_port_t = u16;
-pub const sa_family_t = u16;
-pub const socklen_t = u32;
-
-pub const sockaddr = extern struct {
-    family: sa_family_t,
-    data: [14]u8,
-};
-
-pub const sockaddr_storage = std.x.os.Socket.Address.Native.Storage;
-
-/// IPv4 socket address
-pub const sockaddr_in = extern struct {
-    family: sa_family_t = AF_INET,
-    port: in_port_t,
-    addr: u32,
-    zero: [8]u8 = [8]u8{ 0, 0, 0, 0, 0, 0, 0, 0 },
-};
-
-/// IPv6 socket address
-pub const sockaddr_in6 = extern struct {
-    family: sa_family_t = AF_INET6,
-    port: in_port_t,
-    flowinfo: u32,
-    addr: [16]u8,
-    scope_id: u32,
-};
-
-/// UNIX domain socket address
-pub const sockaddr_un = extern struct {
-    family: sa_family_t = AF_UNIX,
-    path: [108]u8,
-};
-
-pub const mmsghdr = extern struct {
-    msg_hdr: msghdr,
-    msg_len: u32,
-};
-
-pub const mmsghdr_const = extern struct {
-    msg_hdr: msghdr_const,
-    msg_len: u32,
-};
-
-pub const epoll_data = extern union {
-    ptr: usize,
-    fd: i32,
-    @"u32": u32,
-    @"u64": u64,
-};
-
-// On x86_64 the structure is packed so that it matches the definition of its
-// 32bit counterpart
-pub const epoll_event = switch (arch) {
-    .x86_64 => packed struct {
-        events: u32,
-        data: epoll_data,
-    },
-    else => extern struct {
-        events: u32,
-        data: epoll_data,
-    },
-};
-
-pub const _LINUX_CAPABILITY_VERSION_1 = 0x19980330;
-pub const _LINUX_CAPABILITY_U32S_1 = 1;
-
-pub const _LINUX_CAPABILITY_VERSION_2 = 0x20071026;
-pub const _LINUX_CAPABILITY_U32S_2 = 2;
-
-pub const _LINUX_CAPABILITY_VERSION_3 = 0x20080522;
-pub const _LINUX_CAPABILITY_U32S_3 = 2;
-
-pub const VFS_CAP_REVISION_MASK = 0xFF000000;
-pub const VFS_CAP_REVISION_SHIFT = 24;
-pub const VFS_CAP_FLAGS_MASK = ~VFS_CAP_REVISION_MASK;
-pub const VFS_CAP_FLAGS_EFFECTIVE = 0x000001;
-
-pub const VFS_CAP_REVISION_1 = 0x01000000;
-pub const VFS_CAP_U32_1 = 1;
-pub const XATTR_CAPS_SZ_1 = @sizeOf(u32) * (1 + 2 * VFS_CAP_U32_1);
-
-pub const VFS_CAP_REVISION_2 = 0x02000000;
-pub const VFS_CAP_U32_2 = 2;
-pub const XATTR_CAPS_SZ_2 = @sizeOf(u32) * (1 + 2 * VFS_CAP_U32_2);
-
-pub const XATTR_CAPS_SZ = XATTR_CAPS_SZ_2;
-pub const VFS_CAP_U32 = VFS_CAP_U32_2;
-pub const VFS_CAP_REVISION = VFS_CAP_REVISION_2;
-
-pub const vfs_cap_data = extern struct {
-    //all of these are mandated as little endian
-    //when on disk.
-    const Data = struct {
-        permitted: u32,
-        inheritable: u32,
-    };
-
-    magic_etc: u32,
-    data: [VFS_CAP_U32]Data,
-};
-
-pub const CAP_CHOWN = 0;
-pub const CAP_DAC_OVERRIDE = 1;
-pub const CAP_DAC_READ_SEARCH = 2;
-pub const CAP_FOWNER = 3;
-pub const CAP_FSETID = 4;
-pub const CAP_KILL = 5;
-pub const CAP_SETGID = 6;
-pub const CAP_SETUID = 7;
-pub const CAP_SETPCAP = 8;
-pub const CAP_LINUX_IMMUTABLE = 9;
-pub const CAP_NET_BIND_SERVICE = 10;
-pub const CAP_NET_BROADCAST = 11;
-pub const CAP_NET_ADMIN = 12;
-pub const CAP_NET_RAW = 13;
-pub const CAP_IPC_LOCK = 14;
-pub const CAP_IPC_OWNER = 15;
-pub const CAP_SYS_MODULE = 16;
-pub const CAP_SYS_RAWIO = 17;
-pub const CAP_SYS_CHROOT = 18;
-pub const CAP_SYS_PTRACE = 19;
-pub const CAP_SYS_PACCT = 20;
-pub const CAP_SYS_ADMIN = 21;
-pub const CAP_SYS_BOOT = 22;
-pub const CAP_SYS_NICE = 23;
-pub const CAP_SYS_RESOURCE = 24;
-pub const CAP_SYS_TIME = 25;
-pub const CAP_SYS_TTY_CONFIG = 26;
-pub const CAP_MKNOD = 27;
-pub const CAP_LEASE = 28;
-pub const CAP_AUDIT_WRITE = 29;
-pub const CAP_AUDIT_CONTROL = 30;
-pub const CAP_SETFCAP = 31;
-pub const CAP_MAC_OVERRIDE = 32;
-pub const CAP_MAC_ADMIN = 33;
-pub const CAP_SYSLOG = 34;
-pub const CAP_WAKE_ALARM = 35;
-pub const CAP_BLOCK_SUSPEND = 36;
-pub const CAP_AUDIT_READ = 37;
-pub const CAP_LAST_CAP = CAP_AUDIT_READ;
-
-pub fn cap_valid(x: u8) bool {
-    return x >= 0 and x <= CAP_LAST_CAP;
-}
-
-pub fn CAP_TO_MASK(cap: u8) u32 {
-    return @as(u32, 1) << @intCast(u5, cap & 31);
-}
-
-pub fn CAP_TO_INDEX(cap: u8) u8 {
-    return cap >> 5;
-}
-
-pub const cap_t = extern struct {
-    hdrp: *cap_user_header_t,
-    datap: *cap_user_data_t,
-};
-
-pub const cap_user_header_t = extern struct {
-    version: u32,
-    pid: usize,
-};
-
-pub const cap_user_data_t = extern struct {
-    effective: u32,
-    permitted: u32,
-    inheritable: u32,
-};
-
-pub const inotify_event = extern struct {
-    wd: i32,
-    mask: u32,
-    cookie: u32,
-    len: u32,
-    //name: [?]u8,
-};
-
-pub const dirent64 = extern struct {
-    d_ino: u64,
-    d_off: u64,
-    d_reclen: u16,
-    d_type: u8,
-    d_name: u8, // field address is the address of first byte of name https://github.com/ziglang/zig/issues/173
-
-    pub fn reclen(self: dirent64) u16 {
-        return self.d_reclen;
-    }
-};
-
-pub const dl_phdr_info = extern struct {
-    dlpi_addr: usize,
-    dlpi_name: ?[*:0]const u8,
-    dlpi_phdr: [*]std.elf.Phdr,
-    dlpi_phnum: u16,
-};
-
-pub const CPU_SETSIZE = 128;
-pub const cpu_set_t = [CPU_SETSIZE / @sizeOf(usize)]usize;
-pub const cpu_count_t = std.meta.Int(.unsigned, std.math.log2(CPU_SETSIZE * 8));
-
-pub fn CPU_COUNT(set: cpu_set_t) cpu_count_t {
-    var sum: cpu_count_t = 0;
-    for (set) |x| {
-        sum += @popCount(usize, x);
-    }
-    return sum;
-}
-
-// TODO port these over
-//#define CPU_SET(i, set) CPU_SET_S(i,sizeof(cpu_set_t),set)
-//#define CPU_CLR(i, set) CPU_CLR_S(i,sizeof(cpu_set_t),set)
-//#define CPU_ISSET(i, set) CPU_ISSET_S(i,sizeof(cpu_set_t),set)
-//#define CPU_AND(d,s1,s2) CPU_AND_S(sizeof(cpu_set_t),d,s1,s2)
-//#define CPU_OR(d,s1,s2) CPU_OR_S(sizeof(cpu_set_t),d,s1,s2)
-//#define CPU_XOR(d,s1,s2) CPU_XOR_S(sizeof(cpu_set_t),d,s1,s2)
-//#define CPU_COUNT(set) CPU_COUNT_S(sizeof(cpu_set_t),set)
-//#define CPU_ZERO(set) CPU_ZERO_S(sizeof(cpu_set_t),set)
-//#define CPU_EQUAL(s1,s2) CPU_EQUAL_S(sizeof(cpu_set_t),s1,s2)
-
-pub const MINSIGSTKSZ = switch (arch) {
-    .i386, .x86_64, .arm, .mipsel => 2048,
-    .aarch64 => 5120,
-    else => @compileError("MINSIGSTKSZ not defined for this architecture"),
-};
-pub const SIGSTKSZ = switch (arch) {
-    .i386, .x86_64, .arm, .mipsel => 8192,
-    .aarch64 => 16384,
-    else => @compileError("SIGSTKSZ not defined for this architecture"),
-};
-
-pub const SS_ONSTACK = 1;
-pub const SS_DISABLE = 2;
-pub const SS_AUTODISARM = 1 << 31;
-
-pub const stack_t = if (is_mips)
-    // IRIX compatible stack_t
-    extern struct {
-        ss_sp: [*]u8,
-        ss_size: usize,
-        ss_flags: i32,
-    }
-else
-    extern struct {
-        ss_sp: [*]u8,
-        ss_flags: i32,
-        ss_size: usize,
-    };
-
-pub const sigval = extern union {
-    int: i32,
-    ptr: *c_void,
-};
-
-const siginfo_fields_union = extern union {
-    pad: [128 - 2 * @sizeOf(c_int) - @sizeOf(c_long)]u8,
-    common: extern struct {
-        first: extern union {
-            piduid: extern struct {
-                pid: pid_t,
-                uid: uid_t,
-            },
-            timer: extern struct {
-                timerid: i32,
-                overrun: i32,
-            },
-        },
-        second: extern union {
-            value: sigval,
-            sigchld: extern struct {
-                status: i32,
-                utime: clock_t,
-                stime: clock_t,
-            },
-        },
-    },
-    sigfault: extern struct {
-        addr: *c_void,
-        addr_lsb: i16,
-        first: extern union {
-            addr_bnd: extern struct {
-                lower: *c_void,
-                upper: *c_void,
-            },
-            pkey: u32,
-        },
-    },
-    sigpoll: extern struct {
-        band: isize,
-        fd: i32,
-    },
-    sigsys: extern struct {
-        call_addr: *c_void,
-        syscall: i32,
-        arch: u32,
-    },
-};
-
-pub const siginfo_t = if (is_mips)
-    extern struct {
-        signo: i32,
-        code: i32,
-        errno: i32,
-        fields: siginfo_fields_union,
-    }
-else
-    extern struct {
-        signo: i32,
-        errno: i32,
-        code: i32,
-        fields: siginfo_fields_union,
-    };
-
-pub const io_uring_params = extern struct {
-    sq_entries: u32,
-    cq_entries: u32,
-    flags: u32,
-    sq_thread_cpu: u32,
-    sq_thread_idle: u32,
-    features: u32,
-    wq_fd: u32,
-    resv: [3]u32,
-    sq_off: io_sqring_offsets,
-    cq_off: io_cqring_offsets,
-};
-
-// io_uring_params.features flags
-
-pub const IORING_FEAT_SINGLE_MMAP = 1 << 0;
-pub const IORING_FEAT_NODROP = 1 << 1;
-pub const IORING_FEAT_SUBMIT_STABLE = 1 << 2;
-pub const IORING_FEAT_RW_CUR_POS = 1 << 3;
-pub const IORING_FEAT_CUR_PERSONALITY = 1 << 4;
-pub const IORING_FEAT_FAST_POLL = 1 << 5;
-pub const IORING_FEAT_POLL_32BITS = 1 << 6;
-
-// io_uring_params.flags
-
-/// io_context is polled
-pub const IORING_SETUP_IOPOLL = 1 << 0;
-
-/// SQ poll thread
-pub const IORING_SETUP_SQPOLL = 1 << 1;
-
-/// sq_thread_cpu is valid
-pub const IORING_SETUP_SQ_AFF = 1 << 2;
-
-/// app defines CQ size
-pub const IORING_SETUP_CQSIZE = 1 << 3;
-
-/// clamp SQ/CQ ring sizes
-pub const IORING_SETUP_CLAMP = 1 << 4;
-
-/// attach to existing wq
-pub const IORING_SETUP_ATTACH_WQ = 1 << 5;
-
-/// start with ring disabled
-pub const IORING_SETUP_R_DISABLED = 1 << 6;
-
-pub const io_sqring_offsets = extern struct {
-    /// offset of ring head
-    head: u32,
-
-    /// offset of ring tail
-    tail: u32,
-
-    /// ring mask value
-    ring_mask: u32,
-
-    /// entries in ring
-    ring_entries: u32,
-
-    /// ring flags
-    flags: u32,
-
-    /// number of sqes not submitted
-    dropped: u32,
-
-    /// sqe index array
-    array: u32,
-
-    resv1: u32,
-    resv2: u64,
-};
-
-// io_sqring_offsets.flags
-
-/// needs io_uring_enter wakeup
-pub const IORING_SQ_NEED_WAKEUP = 1 << 0;
-
-/// kernel has cqes waiting beyond the cq ring
-pub const IORING_SQ_CQ_OVERFLOW = 1 << 1;
-
-pub const io_cqring_offsets = extern struct {
-    head: u32,
-    tail: u32,
-    ring_mask: u32,
-    ring_entries: u32,
-    overflow: u32,
-    cqes: u32,
-    resv: [2]u64,
-};
-
-pub const io_uring_sqe = extern struct {
-    opcode: IORING_OP,
-    flags: u8,
-    ioprio: u16,
-    fd: i32,
-    off: u64,
-    addr: u64,
-    len: u32,
-    rw_flags: u32,
-    user_data: u64,
-    buf_index: u16,
-    personality: u16,
-    splice_fd_in: i32,
-    __pad2: [2]u64,
-};
-
-pub const IOSQE_BIT = enum(u8) {
-    FIXED_FILE,
-    IO_DRAIN,
-    IO_LINK,
-    IO_HARDLINK,
-    ASYNC,
-    BUFFER_SELECT,
-
-    _,
-};
-
-// io_uring_sqe.flags
-
-/// use fixed fileset
-pub const IOSQE_FIXED_FILE = 1 << @enumToInt(IOSQE_BIT.FIXED_FILE);
-
-/// issue after inflight IO
-pub const IOSQE_IO_DRAIN = 1 << @enumToInt(IOSQE_BIT.IO_DRAIN);
-
-/// links next sqe
-pub const IOSQE_IO_LINK = 1 << @enumToInt(IOSQE_BIT.IO_LINK);
-
-/// like LINK, but stronger
-pub const IOSQE_IO_HARDLINK = 1 << @enumToInt(IOSQE_BIT.IO_HARDLINK);
-
-/// always go async
-pub const IOSQE_ASYNC = 1 << @enumToInt(IOSQE_BIT.ASYNC);
-
-/// select buffer from buf_group
-pub const IOSQE_BUFFER_SELECT = 1 << @enumToInt(IOSQE_BIT.BUFFER_SELECT);
-
-pub const IORING_OP = enum(u8) {
-    NOP,
-    READV,
-    WRITEV,
-    FSYNC,
-    READ_FIXED,
-    WRITE_FIXED,
-    POLL_ADD,
-    POLL_REMOVE,
-    SYNC_FILE_RANGE,
-    SENDMSG,
-    RECVMSG,
-    TIMEOUT,
-    TIMEOUT_REMOVE,
-    ACCEPT,
-    ASYNC_CANCEL,
-    LINK_TIMEOUT,
-    CONNECT,
-    FALLOCATE,
-    OPENAT,
-    CLOSE,
-    FILES_UPDATE,
-    STATX,
-    READ,
-    WRITE,
-    FADVISE,
-    MADVISE,
-    SEND,
-    RECV,
-    OPENAT2,
-    EPOLL_CTL,
-    SPLICE,
-    PROVIDE_BUFFERS,
-    REMOVE_BUFFERS,
-    TEE,
-
-    _,
-};
-
-// io_uring_sqe.fsync_flags
-pub const IORING_FSYNC_DATASYNC = 1 << 0;
-
-// io_uring_sqe.timeout_flags
-pub const IORING_TIMEOUT_ABS = 1 << 0;
-
-// IO completion data structure (Completion Queue Entry)
-pub const io_uring_cqe = extern struct {
-    /// io_uring_sqe.data submission passed back
-    user_data: u64,
-
-    /// result code for this event
-    res: i32,
-    flags: u32,
-
-    pub fn err(self: io_uring_cqe) E {
-        if (self.res > -4096 and self.res < 0) {
-            return @intToEnum(E, -self.res);
-        }
-        return .SUCCESS;
-    }
-};
-
-// io_uring_cqe.flags
-
-/// If set, the upper 16 bits are the buffer ID
-pub const IORING_CQE_F_BUFFER = 1 << 0;
-
-pub const IORING_OFF_SQ_RING = 0;
-pub const IORING_OFF_CQ_RING = 0x8000000;
-pub const IORING_OFF_SQES = 0x10000000;
-
-// io_uring_enter flags
-pub const IORING_ENTER_GETEVENTS = 1 << 0;
-pub const IORING_ENTER_SQ_WAKEUP = 1 << 1;
-
-// io_uring_register opcodes and arguments
-pub const IORING_REGISTER = enum(u8) {
-    REGISTER_BUFFERS,
-    UNREGISTER_BUFFERS,
-    REGISTER_FILES,
-    UNREGISTER_FILES,
-    REGISTER_EVENTFD,
-    UNREGISTER_EVENTFD,
-    REGISTER_FILES_UPDATE,
-    REGISTER_EVENTFD_ASYNC,
-    REGISTER_PROBE,
-    REGISTER_PERSONALITY,
-    UNREGISTER_PERSONALITY,
-    REGISTER_RESTRICTIONS,
-    REGISTER_ENABLE_RINGS,
-
-    _,
-};
-
-pub const io_uring_files_update = extern struct {
-    offset: u32,
-    resv: u32,
-    fds: u64,
-};
-
-pub const IO_URING_OP_SUPPORTED = 1 << 0;
-
-pub const io_uring_probe_op = extern struct {
-    op: IORING_OP,
-
-    resv: u8,
-
-    /// IO_URING_OP_* flags
-    flags: u16,
-
-    resv2: u32,
-};
-
-pub const io_uring_probe = extern struct {
-    /// last opcode supported
-    last_op: IORING_OP,
-
-    /// Number of io_uring_probe_op following
-    ops_len: u8,
-
-    resv: u16,
-    resv2: u32[3],
-
-    // Followed by up to `ops_len` io_uring_probe_op structures
-};
-
-pub const io_uring_restriction = extern struct {
-    opcode: u16,
-    arg: extern union {
-        /// IORING_RESTRICTION_REGISTER_OP
-        register_op: IORING_REGISTER,
-
-        /// IORING_RESTRICTION_SQE_OP
-        sqe_op: IORING_OP,
-
-        /// IORING_RESTRICTION_SQE_FLAGS_*
-        sqe_flags: u8,
-    },
-    resv: u8,
-    resv2: u32[3],
-};
-
-/// io_uring_restriction->opcode values
-pub const IORING_RESTRICTION = enum(u8) {
-    /// Allow an io_uring_register(2) opcode
-    REGISTER_OP = 0,
-
-    /// Allow an sqe opcode
-    SQE_OP = 1,
-
-    /// Allow sqe flags
-    SQE_FLAGS_ALLOWED = 2,
-
-    /// Require sqe flags (these flags must be set on each submission)
-    SQE_FLAGS_REQUIRED = 3,
-
-    _,
-};
-
-pub const utsname = extern struct {
-    sysname: [64:0]u8,
-    nodename: [64:0]u8,
-    release: [64:0]u8,
-    version: [64:0]u8,
-    machine: [64:0]u8,
-    domainname: [64:0]u8,
-};
-pub const HOST_NAME_MAX = 64;
-
-pub const STATX_TYPE = 0x0001;
-pub const STATX_MODE = 0x0002;
-pub const STATX_NLINK = 0x0004;
-pub const STATX_UID = 0x0008;
-pub const STATX_GID = 0x0010;
-pub const STATX_ATIME = 0x0020;
-pub const STATX_MTIME = 0x0040;
-pub const STATX_CTIME = 0x0080;
-pub const STATX_INO = 0x0100;
-pub const STATX_SIZE = 0x0200;
-pub const STATX_BLOCKS = 0x0400;
-pub const STATX_BASIC_STATS = 0x07ff;
-
-pub const STATX_BTIME = 0x0800;
-
-pub const STATX_ATTR_COMPRESSED = 0x0004;
-pub const STATX_ATTR_IMMUTABLE = 0x0010;
-pub const STATX_ATTR_APPEND = 0x0020;
-pub const STATX_ATTR_NODUMP = 0x0040;
-pub const STATX_ATTR_ENCRYPTED = 0x0800;
-pub const STATX_ATTR_AUTOMOUNT = 0x1000;
-
-pub const statx_timestamp = extern struct {
-    tv_sec: i64,
-    tv_nsec: u32,
-    __pad1: u32,
-};
-
-/// Renamed to `Statx` to not conflict with the `statx` function.
-pub const Statx = extern struct {
-    /// Mask of bits indicating filled fields
-    mask: u32,
-
-    /// Block size for filesystem I/O
-    blksize: u32,
-
-    /// Extra file attribute indicators
-    attributes: u64,
-
-    /// Number of hard links
-    nlink: u32,
-
-    /// User ID of owner
-    uid: uid_t,
-
-    /// Group ID of owner
-    gid: gid_t,
-
-    /// File type and mode
-    mode: u16,
-    __pad1: u16,
-
-    /// Inode number
-    ino: u64,
-
-    /// Total size in bytes
-    size: u64,
-
-    /// Number of 512B blocks allocated
-    blocks: u64,
-
-    /// Mask to show what's supported in `attributes`.
-    attributes_mask: u64,
-
-    /// Last access file timestamp
-    atime: statx_timestamp,
-
-    /// Creation file timestamp
-    btime: statx_timestamp,
-
-    /// Last status change file timestamp
-    ctime: statx_timestamp,
-
-    /// Last modification file timestamp
-    mtime: statx_timestamp,
-
-    /// Major ID, if this file represents a device.
-    rdev_major: u32,
-
-    /// Minor ID, if this file represents a device.
-    rdev_minor: u32,
-
-    /// Major ID of the device containing the filesystem where this file resides.
-    dev_major: u32,
-
-    /// Minor ID of the device containing the filesystem where this file resides.
-    dev_minor: u32,
-
-    __pad2: [14]u64,
-};
-
-pub const addrinfo = extern struct {
-    flags: i32,
-    family: i32,
-    socktype: i32,
-    protocol: i32,
-    addrlen: socklen_t,
-    addr: ?*sockaddr,
-    canonname: ?[*:0]u8,
-    next: ?*addrinfo,
-};
-
-pub const IPPORT_RESERVED = 1024;
-
-pub const IPPROTO_IP = 0;
-pub const IPPROTO_HOPOPTS = 0;
-pub const IPPROTO_ICMP = 1;
-pub const IPPROTO_IGMP = 2;
-pub const IPPROTO_IPIP = 4;
-pub const IPPROTO_TCP = 6;
-pub const IPPROTO_EGP = 8;
-pub const IPPROTO_PUP = 12;
-pub const IPPROTO_UDP = 17;
-pub const IPPROTO_IDP = 22;
-pub const IPPROTO_TP = 29;
-pub const IPPROTO_DCCP = 33;
-pub const IPPROTO_IPV6 = 41;
-pub const IPPROTO_ROUTING = 43;
-pub const IPPROTO_FRAGMENT = 44;
-pub const IPPROTO_RSVP = 46;
-pub const IPPROTO_GRE = 47;
-pub const IPPROTO_ESP = 50;
-pub const IPPROTO_AH = 51;
-pub const IPPROTO_ICMPV6 = 58;
-pub const IPPROTO_NONE = 59;
-pub const IPPROTO_DSTOPTS = 60;
-pub const IPPROTO_MTP = 92;
-pub const IPPROTO_BEETPH = 94;
-pub const IPPROTO_ENCAP = 98;
-pub const IPPROTO_PIM = 103;
-pub const IPPROTO_COMP = 108;
-pub const IPPROTO_SCTP = 132;
-pub const IPPROTO_MH = 135;
-pub const IPPROTO_UDPLITE = 136;
-pub const IPPROTO_MPLS = 137;
-pub const IPPROTO_RAW = 255;
-pub const IPPROTO_MAX = 256;
-
-pub const RR_A = 1;
-pub const RR_CNAME = 5;
-pub const RR_AAAA = 28;
-
-/// Turn off Nagle's algorithm
-pub const TCP_NODELAY = 1;
-/// Limit MSS
-pub const TCP_MAXSEG = 2;
-/// Never send partially complete segments.
-pub const TCP_CORK = 3;
-/// Start keeplives after this period, in seconds
-pub const TCP_KEEPIDLE = 4;
-/// Interval between keepalives
-pub const TCP_KEEPINTVL = 5;
-/// Number of keepalives before death
-pub const TCP_KEEPCNT = 6;
-/// Number of SYN retransmits
-pub const TCP_SYNCNT = 7;
-/// Life time of orphaned FIN-WAIT-2 state
-pub const TCP_LINGER2 = 8;
-/// Wake up listener only when data arrive
-pub const TCP_DEFER_ACCEPT = 9;
-/// Bound advertised window
-pub const TCP_WINDOW_CLAMP = 10;
-/// Information about this connection.
-pub const TCP_INFO = 11;
-/// Block/reenable quick acks
-pub const TCP_QUICKACK = 12;
-/// Congestion control algorithm
-pub const TCP_CONGESTION = 13;
-/// TCP MD5 Signature (RFC2385)
-pub const TCP_MD5SIG = 14;
-/// Use linear timeouts for thin streams
-pub const TCP_THIN_LINEAR_TIMEOUTS = 16;
-/// Fast retrans. after 1 dupack
-pub const TCP_THIN_DUPACK = 17;
-/// How long for loss retry before timeout
-pub const TCP_USER_TIMEOUT = 18;
-/// TCP sock is under repair right now
-pub const TCP_REPAIR = 19;
-pub const TCP_REPAIR_QUEUE = 20;
-pub const TCP_QUEUE_SEQ = 21;
-pub const TCP_REPAIR_OPTIONS = 22;
-/// Enable FastOpen on listeners
-pub const TCP_FASTOPEN = 23;
-pub const TCP_TIMESTAMP = 24;
-/// limit number of unsent bytes in write queue
-pub const TCP_NOTSENT_LOWAT = 25;
-/// Get Congestion Control (optional) info
-pub const TCP_CC_INFO = 26;
-/// Record SYN headers for new connections
-pub const TCP_SAVE_SYN = 27;
-/// Get SYN headers recorded for connection
-pub const TCP_SAVED_SYN = 28;
-/// Get/set window parameters
-pub const TCP_REPAIR_WINDOW = 29;
-/// Attempt FastOpen with connect
-pub const TCP_FASTOPEN_CONNECT = 30;
-/// Attach a ULP to a TCP connection
-pub const TCP_ULP = 31;
-/// TCP MD5 Signature with extensions
-pub const TCP_MD5SIG_EXT = 32;
-/// Set the key for Fast Open (cookie)
-pub const TCP_FASTOPEN_KEY = 33;
-/// Enable TFO without a TFO cookie
-pub const TCP_FASTOPEN_NO_COOKIE = 34;
-pub const TCP_ZEROCOPY_RECEIVE = 35;
-/// Notify bytes available to read as a cmsg on read
-pub const TCP_INQ = 36;
-pub const TCP_CM_INQ = TCP_INQ;
-/// delay outgoing packets by XX usec
-pub const TCP_TX_DELAY = 37;
-
-pub const TCP_REPAIR_ON = 1;
-pub const TCP_REPAIR_OFF = 0;
-/// Turn off without window probes
-pub const TCP_REPAIR_OFF_NO_WP = -1;
-
-pub const tcp_repair_opt = extern struct {
-    opt_code: u32,
-    opt_val: u32,
-};
-
-pub const tcp_repair_window = extern struct {
-    snd_wl1: u32,
-    snd_wnd: u32,
-    max_window: u32,
-    rcv_wnd: u32,
-    rcv_wup: u32,
-};
-
-pub const TcpRepairOption = enum {
-    TCP_NO_QUEUE,
-    TCP_RECV_QUEUE,
-    TCP_SEND_QUEUE,
-    TCP_QUEUES_NR,
-};
-
-/// why fastopen failed from client perspective
-pub const tcp_fastopen_client_fail = enum {
-    /// catch-all
-    TFO_STATUS_UNSPEC,
-    /// if not in TFO_CLIENT_NO_COOKIE mode
-    TFO_COOKIE_UNAVAILABLE,
-    /// SYN-ACK did not ack SYN data
-    TFO_DATA_NOT_ACKED,
-    /// SYN-ACK did not ack SYN data after timeout
-    TFO_SYN_RETRANSMITTED,
-};
-
-/// for TCP_INFO socket option
-pub const TCPI_OPT_TIMESTAMPS = 1;
-pub const TCPI_OPT_SACK = 2;
-pub const TCPI_OPT_WSCALE = 4;
-/// ECN was negociated at TCP session init
-pub const TCPI_OPT_ECN = 8;
-/// we received at least one packet with ECT
-pub const TCPI_OPT_ECN_SEEN = 16;
-/// SYN-ACK acked data in SYN sent or rcvd
-pub const TCPI_OPT_SYN_DATA = 32;
-
-pub const nfds_t = usize;
-pub const pollfd = extern struct {
-    fd: fd_t,
-    events: i16,
-    revents: i16,
-};
-
-pub const POLLIN = 0x001;
-pub const POLLPRI = 0x002;
-pub const POLLOUT = 0x004;
-pub const POLLERR = 0x008;
-pub const POLLHUP = 0x010;
-pub const POLLNVAL = 0x020;
-pub const POLLRDNORM = 0x040;
-pub const POLLRDBAND = 0x080;
-
-pub const MFD_CLOEXEC = 0x0001;
-pub const MFD_ALLOW_SEALING = 0x0002;
-pub const MFD_HUGETLB = 0x0004;
-pub const MFD_ALL_FLAGS = MFD_CLOEXEC | MFD_ALLOW_SEALING | MFD_HUGETLB;
-
-pub const HUGETLB_FLAG_ENCODE_SHIFT = 26;
-pub const HUGETLB_FLAG_ENCODE_MASK = 0x3f;
-pub const HUGETLB_FLAG_ENCODE_64KB = 16 << HUGETLB_FLAG_ENCODE_SHIFT;
-pub const HUGETLB_FLAG_ENCODE_512KB = 19 << HUGETLB_FLAG_ENCODE_SHIFT;
-pub const HUGETLB_FLAG_ENCODE_1MB = 20 << HUGETLB_FLAG_ENCODE_SHIFT;
-pub const HUGETLB_FLAG_ENCODE_2MB = 21 << HUGETLB_FLAG_ENCODE_SHIFT;
-pub const HUGETLB_FLAG_ENCODE_8MB = 23 << HUGETLB_FLAG_ENCODE_SHIFT;
-pub const HUGETLB_FLAG_ENCODE_16MB = 24 << HUGETLB_FLAG_ENCODE_SHIFT;
-pub const HUGETLB_FLAG_ENCODE_32MB = 25 << HUGETLB_FLAG_ENCODE_SHIFT;
-pub const HUGETLB_FLAG_ENCODE_256MB = 28 << HUGETLB_FLAG_ENCODE_SHIFT;
-pub const HUGETLB_FLAG_ENCODE_512MB = 29 << HUGETLB_FLAG_ENCODE_SHIFT;
-pub const HUGETLB_FLAG_ENCODE_1GB = 30 << HUGETLB_FLAG_ENCODE_SHIFT;
-pub const HUGETLB_FLAG_ENCODE_2GB = 31 << HUGETLB_FLAG_ENCODE_SHIFT;
-pub const HUGETLB_FLAG_ENCODE_16GB = 34 << HUGETLB_FLAG_ENCODE_SHIFT;
-
-pub const MFD_HUGE_SHIFT = HUGETLB_FLAG_ENCODE_SHIFT;
-pub const MFD_HUGE_MASK = HUGETLB_FLAG_ENCODE_MASK;
-pub const MFD_HUGE_64KB = HUGETLB_FLAG_ENCODE_64KB;
-pub const MFD_HUGE_512KB = HUGETLB_FLAG_ENCODE_512KB;
-pub const MFD_HUGE_1MB = HUGETLB_FLAG_ENCODE_1MB;
-pub const MFD_HUGE_2MB = HUGETLB_FLAG_ENCODE_2MB;
-pub const MFD_HUGE_8MB = HUGETLB_FLAG_ENCODE_8MB;
-pub const MFD_HUGE_16MB = HUGETLB_FLAG_ENCODE_16MB;
-pub const MFD_HUGE_32MB = HUGETLB_FLAG_ENCODE_32MB;
-pub const MFD_HUGE_256MB = HUGETLB_FLAG_ENCODE_256MB;
-pub const MFD_HUGE_512MB = HUGETLB_FLAG_ENCODE_512MB;
-pub const MFD_HUGE_1GB = HUGETLB_FLAG_ENCODE_1GB;
-pub const MFD_HUGE_2GB = HUGETLB_FLAG_ENCODE_2GB;
-pub const MFD_HUGE_16GB = HUGETLB_FLAG_ENCODE_16GB;
-
-pub const RUSAGE_SELF = 0;
-pub const RUSAGE_CHILDREN = -1;
-pub const RUSAGE_THREAD = 1;
-
-pub const rusage = extern struct {
-    utime: timeval,
-    stime: timeval,
-    maxrss: isize,
-    ixrss: isize,
-    idrss: isize,
-    isrss: isize,
-    minflt: isize,
-    majflt: isize,
-    nswap: isize,
-    inblock: isize,
-    oublock: isize,
-    msgsnd: isize,
-    msgrcv: isize,
-    nsignals: isize,
-    nvcsw: isize,
-    nivcsw: isize,
-    __reserved: [16]isize = [1]isize{0} ** 16,
-};
-
-pub const cc_t = u8;
-pub const speed_t = u32;
-pub const tcflag_t = u32;
-
-pub const NCCS = 32;
-
-pub const B0 = 0o0000000;
-pub const B50 = 0o0000001;
-pub const B75 = 0o0000002;
-pub const B110 = 0o0000003;
-pub const B134 = 0o0000004;
-pub const B150 = 0o0000005;
-pub const B200 = 0o0000006;
-pub const B300 = 0o0000007;
-pub const B600 = 0o0000010;
-pub const B1200 = 0o0000011;
-pub const B1800 = 0o0000012;
-pub const B2400 = 0o0000013;
-pub const B4800 = 0o0000014;
-pub const B9600 = 0o0000015;
-pub const B19200 = 0o0000016;
-pub const B38400 = 0o0000017;
-pub const BOTHER = 0o0010000;
-pub const B57600 = 0o0010001;
-pub const B115200 = 0o0010002;
-pub const B230400 = 0o0010003;
-pub const B460800 = 0o0010004;
-pub const B500000 = 0o0010005;
-pub const B576000 = 0o0010006;
-pub const B921600 = 0o0010007;
-pub const B1000000 = 0o0010010;
-pub const B1152000 = 0o0010011;
-pub const B1500000 = 0o0010012;
-pub const B2000000 = 0o0010013;
-pub const B2500000 = 0o0010014;
-pub const B3000000 = 0o0010015;
-pub const B3500000 = 0o0010016;
-pub const B4000000 = 0o0010017;
-
-pub usingnamespace switch (arch) {
-    .powerpc, .powerpc64, .powerpc64le => struct {
-        pub const VINTR = 0;
-        pub const VQUIT = 1;
-        pub const VERASE = 2;
-        pub const VKILL = 3;
-        pub const VEOF = 4;
-        pub const VMIN = 5;
-        pub const VEOL = 6;
-        pub const VTIME = 7;
-        pub const VEOL2 = 8;
-        pub const VSWTC = 9;
-        pub const VWERASE = 10;
-        pub const VREPRINT = 11;
-        pub const VSUSP = 12;
-        pub const VSTART = 13;
-        pub const VSTOP = 14;
-        pub const VLNEXT = 15;
-        pub const VDISCARD = 16;
-    },
-    .sparc, .sparcv9 => struct {
-        pub const VINTR = 0;
-        pub const VQUIT = 1;
-        pub const VERASE = 2;
-        pub const VKILL = 3;
-        pub const VEOF = 4;
-        pub const VEOL = 5;
-        pub const VEOL2 = 6;
-        pub const VSWTC = 7;
-        pub const VSTART = 8;
-        pub const VSTOP = 9;
-        pub const VSUSP = 10;
-        pub const VDSUSP = 11;
-        pub const VREPRINT = 12;
-        pub const VDISCARD = 13;
-        pub const VWERASE = 14;
-        pub const VLNEXT = 15;
-        pub const VMIN = VEOF;
-        pub const VTIME = VEOL;
-    },
-    .mips, .mipsel, .mips64, .mips64el => struct {
-        pub const VINTR = 0;
-        pub const VQUIT = 1;
-        pub const VERASE = 2;
-        pub const VKILL = 3;
-        pub const VMIN = 4;
-        pub const VTIME = 5;
-        pub const VEOL2 = 6;
-        pub const VSWTC = 7;
-        pub const VSWTCH = 7;
-        pub const VSTART = 8;
-        pub const VSTOP = 9;
-        pub const VSUSP = 10;
-        pub const VREPRINT = 12;
-        pub const VDISCARD = 13;
-        pub const VWERASE = 14;
-        pub const VLNEXT = 15;
-        pub const VEOF = 16;
-        pub const VEOL = 17;
-    },
-    else => struct {
-        pub const VINTR = 0;
-        pub const VQUIT = 1;
-        pub const VERASE = 2;
-        pub const VKILL = 3;
-        pub const VEOF = 4;
-        pub const VTIME = 5;
-        pub const VMIN = 6;
-        pub const VSWTC = 7;
-        pub const VSTART = 8;
-        pub const VSTOP = 9;
-        pub const VSUSP = 10;
-        pub const VEOL = 11;
-        pub const VREPRINT = 12;
-        pub const VDISCARD = 13;
-        pub const VWERASE = 14;
-        pub const VLNEXT = 15;
-        pub const VEOL2 = 16;
-    },
-};
-
-pub const IGNBRK = 1;
-pub const BRKINT = 2;
-pub const IGNPAR = 4;
-pub const PARMRK = 8;
-pub const INPCK = 16;
-pub const ISTRIP = 32;
-pub const INLCR = 64;
-pub const IGNCR = 128;
-pub const ICRNL = 256;
-pub const IUCLC = 512;
-pub const IXON = 1024;
-pub const IXANY = 2048;
-pub const IXOFF = 4096;
-pub const IMAXBEL = 8192;
-pub const IUTF8 = 16384;
-
-pub const OPOST = 1;
-pub const OLCUC = 2;
-pub const ONLCR = 4;
-pub const OCRNL = 8;
-pub const ONOCR = 16;
-pub const ONLRET = 32;
-pub const OFILL = 64;
-pub const OFDEL = 128;
-pub const VTDLY = 16384;
-pub const VT0 = 0;
-pub const VT1 = 16384;
-
-pub const CSIZE = 48;
-pub const CS5 = 0;
-pub const CS6 = 16;
-pub const CS7 = 32;
-pub const CS8 = 48;
-pub const CSTOPB = 64;
-pub const CREAD = 128;
-pub const PARENB = 256;
-pub const PARODD = 512;
-pub const HUPCL = 1024;
-pub const CLOCAL = 2048;
-
-pub const ISIG = 1;
-pub const ICANON = 2;
-pub const ECHO = 8;
-pub const ECHOE = 16;
-pub const ECHOK = 32;
-pub const ECHONL = 64;
-pub const NOFLSH = 128;
-pub const TOSTOP = 256;
-pub const IEXTEN = 32768;
-
-pub const TCSA = enum(c_uint) {
-    NOW,
-    DRAIN,
-    FLUSH,
-    _,
-};
-
-pub const termios = extern struct {
-    iflag: tcflag_t,
-    oflag: tcflag_t,
-    cflag: tcflag_t,
-    lflag: tcflag_t,
-    line: cc_t,
-    cc: [NCCS]cc_t,
-    ispeed: speed_t,
-    ospeed: speed_t,
-};
-
-pub const SIOCGIFINDEX = 0x8933;
-pub const IFNAMESIZE = 16;
-
-pub const ifmap = extern struct {
-    mem_start: u32,
-    mem_end: u32,
-    base_addr: u16,
-    irq: u8,
-    dma: u8,
-    port: u8,
-};
-
-pub const ifreq = extern struct {
-    ifrn: extern union {
-        name: [IFNAMESIZE]u8,
-    },
-    ifru: extern union {
-        addr: sockaddr,
-        dstaddr: sockaddr,
-        broadaddr: sockaddr,
-        netmask: sockaddr,
-        hwaddr: sockaddr,
-        flags: i16,
-        ivalue: i32,
-        mtu: i32,
-        map: ifmap,
-        slave: [IFNAMESIZE - 1:0]u8,
-        newname: [IFNAMESIZE - 1:0]u8,
-        data: ?[*]u8,
-    },
-};
-
-// doc comments copied from musl
-pub const rlimit_resource = enum(c_int) {
-    /// Per-process CPU limit, in seconds.
-    CPU,
-
-    /// Largest file that can be created, in bytes.
-    FSIZE,
-
-    /// Maximum size of data segment, in bytes.
-    DATA,
-
-    /// Maximum size of stack segment, in bytes.
-    STACK,
-
-    /// Largest core file that can be created, in bytes.
-    CORE,
-
-    /// Largest resident set size, in bytes.
-    /// This affects swapping; processes that are exceeding their
-    /// resident set size will be more likely to have physical memory
-    /// taken from them.
-    RSS,
-
-    /// Number of processes.
-    NPROC,
-
-    /// Number of open files.
-    NOFILE,
-
-    /// Locked-in-memory address space.
-    MEMLOCK,
-
-    /// Address space limit.
-    AS,
-
-    /// Maximum number of file locks.
-    LOCKS,
-
-    /// Maximum number of pending signals.
-    SIGPENDING,
-
-    /// Maximum bytes in POSIX message queues.
-    MSGQUEUE,
-
-    /// Maximum nice priority allowed to raise to.
-    /// Nice levels 19 .. -20 correspond to 0 .. 39
-    /// values of this resource limit.
-    NICE,
-
-    /// Maximum realtime priority allowed for non-priviledged
-    /// processes.
-    RTPRIO,
-
-    /// Maximum CPU time in µs that a process scheduled under a real-time
-    /// scheduling policy may consume without making a blocking system
-    /// call before being forcibly descheduled.
-    RTTIME,
-
-    _,
-};
-
-pub const rlim_t = u64;
-
-/// No limit
-pub const RLIM_INFINITY = ~@as(rlim_t, 0);
-
-pub const RLIM_SAVED_MAX = RLIM_INFINITY;
-pub const RLIM_SAVED_CUR = RLIM_INFINITY;
-
-pub const rlimit = extern struct {
-    /// Soft limit
-    cur: rlim_t,
-    /// Hard limit
-    max: rlim_t,
-};
-
-pub const MADV_NORMAL = 0;
-pub const MADV_RANDOM = 1;
-pub const MADV_SEQUENTIAL = 2;
-pub const MADV_WILLNEED = 3;
-pub const MADV_DONTNEED = 4;
-pub const MADV_FREE = 8;
-pub const MADV_REMOVE = 9;
-pub const MADV_DONTFORK = 10;
-pub const MADV_DOFORK = 11;
-pub const MADV_MERGEABLE = 12;
-pub const MADV_UNMERGEABLE = 13;
-pub const MADV_HUGEPAGE = 14;
-pub const MADV_NOHUGEPAGE = 15;
-pub const MADV_DONTDUMP = 16;
-pub const MADV_DODUMP = 17;
-pub const MADV_WIPEONFORK = 18;
-pub const MADV_KEEPONFORK = 19;
-pub const MADV_COLD = 20;
-pub const MADV_PAGEOUT = 21;
-pub const MADV_HWPOISON = 100;
-pub const MADV_SOFT_OFFLINE = 101;
-
-pub const POSIX_FADV_NORMAL = 0;
-pub const POSIX_FADV_RANDOM = 1;
-pub const POSIX_FADV_SEQUENTIAL = 2;
-pub const POSIX_FADV_WILLNEED = 3;
-pub usingnamespace switch (arch) {
-    .s390x => if (@typeInfo(usize).Int.bits == 64)
-        struct {
-            pub const POSIX_FADV_DONTNEED = 6;
-            pub const POSIX_FADV_NOREUSE = 7;
-        }
-    else
-        struct {
-            pub const POSIX_FADV_DONTNEED = 4;
-            pub const POSIX_FADV_NOREUSE = 5;
-        },
-    else => struct {
-        pub const POSIX_FADV_DONTNEED = 4;
-        pub const POSIX_FADV_NOREUSE = 5;
-    },
-};
-
-pub const __kernel_timespec = extern struct {
-    tv_sec: i64,
-    tv_nsec: i64,
-};