organize std and make import relative to current file

closes #216

1 files changed, 492 insertions, 0 deletions

diff --git a/std/os/linux.zig b/std/os/linux.zig
new file mode 100644
index 0000000000..be86136dee
--- /dev/null
+++ b/std/os/linux.zig
@@ -0,0 +1,492 @@
+const arch = switch (@compileVar("arch")) {
+    Arch.x86_64 => @import("linux_x86_64.zig"),
+    Arch.i386 => @import("linux_i386.zig"),
+    else => @compileError("unsupported arch"),
+};
+const errno = @import("errno.zig");
+
+pub const MMAP_PROT_NONE =  0;
+pub const MMAP_PROT_READ =  1;
+pub const MMAP_PROT_WRITE = 2;
+pub const MMAP_PROT_EXEC =  4;
+
+pub const MMAP_MAP_FILE =    0;
+pub const MMAP_MAP_SHARED =  1;
+pub const MMAP_MAP_PRIVATE = 2;
+pub const MMAP_MAP_FIXED =   16;
+pub const MMAP_MAP_ANON =    32;
+
+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 O_CREAT = arch.O_CREAT;
+pub const O_EXCL = arch.O_EXCL;
+pub const O_NOCTTY = arch.O_NOCTTY;
+pub const O_TRUNC = arch.O_TRUNC;
+pub const O_APPEND = arch.O_APPEND;
+pub const O_NONBLOCK = arch.O_NONBLOCK;
+pub const O_DSYNC = arch.O_DSYNC;
+pub const O_SYNC = arch.O_SYNC;
+pub const O_RSYNC = arch.O_RSYNC;
+pub const O_DIRECTORY = arch.O_DIRECTORY;
+pub const O_NOFOLLOW = arch.O_NOFOLLOW;
+pub const O_CLOEXEC = arch.O_CLOEXEC;
+
+pub const O_ASYNC = arch.O_ASYNC;
+pub const O_DIRECT = arch.O_DIRECT;
+pub const O_LARGEFILE = arch.O_LARGEFILE;
+pub const O_NOATIME = arch.O_NOATIME;
+pub const O_PATH = arch.O_PATH;
+pub const O_TMPFILE = arch.O_TMPFILE;
+pub const O_NDELAY = arch.O_NDELAY;
+
+pub const SEEK_SET = 0;
+pub const SEEK_CUR = 1;
+pub const SEEK_END = 2;
+
+const SIG_BLOCK   = 0;
+const SIG_UNBLOCK = 1;
+const SIG_SETMASK = 2;
+
+pub const SOCK_STREAM = 1;
+pub const SOCK_DGRAM = 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 = 0o4000;
+
+
+pub const PROTO_ip = 0o000;
+pub const PROTO_icmp = 0o001;
+pub const PROTO_igmp = 0o002;
+pub const PROTO_ggp = 0o003;
+pub const PROTO_ipencap = 0o004;
+pub const PROTO_st = 0o005;
+pub const PROTO_tcp = 0o006;
+pub const PROTO_egp = 0o010;
+pub const PROTO_pup = 0o014;
+pub const PROTO_udp = 0o021;
+pub const PROTO_hmp = 0o024;
+pub const PROTO_xns_idp = 0o026;
+pub const PROTO_rdp = 0o033;
+pub const PROTO_iso_tp4 = 0o035;
+pub const PROTO_xtp = 0o044;
+pub const PROTO_ddp = 0o045;
+pub const PROTO_idpr_cmtp = 0o046;
+pub const PROTO_ipv6 = 0o051;
+pub const PROTO_ipv6_route = 0o053;
+pub const PROTO_ipv6_frag = 0o054;
+pub const PROTO_idrp = 0o055;
+pub const PROTO_rsvp = 0o056;
+pub const PROTO_gre = 0o057;
+pub const PROTO_esp = 0o062;
+pub const PROTO_ah = 0o063;
+pub const PROTO_skip = 0o071;
+pub const PROTO_ipv6_icmp = 0o072;
+pub const PROTO_ipv6_nonxt = 0o073;
+pub const PROTO_ipv6_opts = 0o074;
+pub const PROTO_rspf = 0o111;
+pub const PROTO_vmtp = 0o121;
+pub const PROTO_ospf = 0o131;
+pub const PROTO_ipip = 0o136;
+pub const PROTO_encap = 0o142;
+pub const PROTO_pim = 0o147;
+pub const PROTO_raw = 0o377;
+
+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_MAX = 41;
+
+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_MAX = PF_MAX;
+
+/// Get the errno from a syscall return value, or 0 for no error.
+pub fn getErrno(r: usize) -> usize {
+    const signed_r = *(&isize)(&r);
+    if (signed_r > -4096 and signed_r < 0) usize(-signed_r) else 0
+}
+
+pub fn mmap(address: ?&u8, length: usize, prot: usize, flags: usize, fd: i32, offset: usize)
+    -> usize
+{
+    arch.syscall6(arch.SYS_mmap, usize(address), length, prot, flags, usize(fd), offset)
+}
+
+pub fn munmap(address: &u8, length: usize) -> usize {
+    arch.syscall2(arch.SYS_munmap, usize(address), length)
+}
+
+pub fn read(fd: i32, buf: &u8, count: usize) -> usize {
+    arch.syscall3(arch.SYS_read, usize(fd), usize(buf), count)
+}
+
+pub fn pread(fd: i32, buf: &u8, count: usize, offset: usize) -> usize {
+    arch.syscall4(arch.SYS_pread, usize(fd), usize(buf), count, offset)
+}
+
+pub fn write(fd: i32, buf: &const u8, count: usize) -> usize {
+    arch.syscall3(arch.SYS_write, usize(fd), usize(buf), count)
+}
+
+pub fn pwrite(fd: i32, buf: &const u8, count: usize, offset: usize) -> usize {
+    arch.syscall4(arch.SYS_pwrite, usize(fd), usize(buf), count, offset)
+}
+
+pub fn open_c(path: &const u8, flags: usize, perm: usize) -> usize {
+    arch.syscall3(arch.SYS_open, usize(path), flags, perm)
+}
+
+pub fn open(path: []const u8, flags: usize, perm: usize) -> usize {
+    const buf = @alloca(u8, path.len + 1);
+    @memcpy(&buf[0], &path[0], path.len);
+    buf[path.len] = 0;
+    return open_c(buf.ptr, flags, perm);
+}
+
+pub fn create_c(path: &const u8, perm: usize) -> usize {
+    arch.syscall2(arch.SYS_creat, usize(path), perm)
+}
+
+pub fn create(path: []const u8, perm: usize) -> usize {
+    const buf = @alloca(u8, path.len + 1);
+    @memcpy(&buf[0], &path[0], path.len);
+    buf[path.len] = 0;
+    return create_c(buf.ptr, perm);
+}
+
+pub fn openat_c(dirfd: i32, path: &const u8, flags: usize, mode: usize) -> usize {
+    arch.syscall4(arch.SYS_openat, usize(dirfd), usize(path), flags, mode)
+}
+
+pub fn openat(dirfd: i32, path: []const u8, flags: usize, mode: usize) -> usize {
+    const buf = @alloca(u8, path.len + 1);
+    @memcpy(&buf[0], &path[0], path.len);
+    buf[path.len] = 0;
+    return openat_c(dirfd, buf.ptr, flags, mode);
+}
+
+pub fn close(fd: i32) -> usize {
+    arch.syscall1(arch.SYS_close, usize(fd))
+}
+
+pub fn lseek(fd: i32, offset: usize, ref_pos: usize) -> usize {
+    arch.syscall3(arch.SYS_lseek, usize(fd), offset, ref_pos)
+}
+
+pub fn exit(status: i32) -> noreturn {
+    _ = arch.syscall1(arch.SYS_exit, usize(status));
+    unreachable
+}
+
+pub fn getrandom(buf: &u8, count: usize, flags: u32) -> usize {
+    arch.syscall3(arch.SYS_getrandom, usize(buf), count, usize(flags))
+}
+
+pub fn kill(pid: i32, sig: i32) -> i32 {
+    i32(arch.syscall2(arch.SYS_kill, usize(pid), usize(sig)))
+}
+
+const NSIG = 65;
+const sigset_t = [128]u8;
+const all_mask = []u8 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, };
+const app_mask = []u8 { 0xff, 0xff, 0xff, 0xfc, 0x7f, 0xff, 0xff, 0xff, };
+
+pub fn raise(sig: i32) -> i32 {
+    var set: sigset_t = undefined;
+    blockAppSignals(&set);
+    const tid = i32(arch.syscall0(arch.SYS_gettid));
+    const ret = i32(arch.syscall2(arch.SYS_tkill, usize(tid), usize(sig)));
+    restoreSignals(&set);
+    return ret;
+}
+
+fn blockAllSignals(set: &sigset_t) {
+    _ = arch.syscall4(arch.SYS_rt_sigprocmask, SIG_BLOCK, usize(&all_mask), usize(set), NSIG/8);
+}
+
+fn blockAppSignals(set: &sigset_t) {
+    _ = arch.syscall4(arch.SYS_rt_sigprocmask, SIG_BLOCK, usize(&app_mask), usize(set), NSIG/8);
+}
+
+fn restoreSignals(set: &sigset_t) {
+    _ = arch.syscall4(arch.SYS_rt_sigprocmask, SIG_SETMASK, usize(set), 0, NSIG/8);
+}
+
+
+pub const sa_family_t = u16;
+pub const socklen_t = u32;
+pub const in_addr = u32;
+pub const in6_addr = [16]u8;
+
+pub const sockaddr = extern struct {
+    family: sa_family_t,
+    port: u16,
+    data: [12]u8,
+};
+
+pub const sockaddr_in = extern struct {
+    family: sa_family_t,
+    port: u16,
+    addr: in_addr,
+    zero: [8]u8,
+};
+
+pub const sockaddr_in6 = extern struct {
+    family: sa_family_t,
+    port: u16,
+    flowinfo: u32,
+    addr: in6_addr,
+    scope_id: u32,
+};
+
+pub const iovec = extern struct {
+    iov_base: &u8,
+    iov_len: usize,
+};
+
+//
+//const IF_NAMESIZE = 16;
+//
+//export struct ifreq {
+//    ifrn_name: [IF_NAMESIZE]u8,
+//	union {
+//        ifru_addr: sockaddr,
+//        ifru_dstaddr: sockaddr,
+//        ifru_broadaddr: sockaddr,
+//        ifru_netmask: sockaddr,
+//        ifru_hwaddr: sockaddr,
+//        ifru_flags: i16,
+//        ifru_ivalue: i32,
+//        ifru_mtu: i32,
+//        ifru_map: ifmap,
+//        ifru_slave: [IF_NAMESIZE]u8,
+//        ifru_newname: [IF_NAMESIZE]u8,
+//        ifru_data: &u8,
+//	} ifr_ifru;
+//}
+//
+
+pub fn getsockname(fd: i32, noalias addr: &sockaddr, noalias len: &socklen_t) -> usize {
+    arch.syscall3(arch.SYS_getsockname, usize(fd), usize(addr), usize(len))
+}
+
+pub fn getpeername(fd: i32, noalias addr: &sockaddr, noalias len: &socklen_t) -> usize {
+    arch.syscall3(arch.SYS_getpeername, usize(fd), usize(addr), usize(len))
+}
+
+pub fn socket(domain: i32, socket_type: i32, protocol: i32) -> usize {
+    arch.syscall3(arch.SYS_socket, usize(domain), usize(socket_type), usize(protocol))
+}
+
+pub fn setsockopt(fd: i32, level: i32, optname: i32, optval: &const u8, optlen: socklen_t) -> usize {
+    arch.syscall5(arch.SYS_setsockopt, usize(fd), usize(level), usize(optname), usize(optval), usize(optlen))
+}
+
+pub fn getsockopt(fd: i32, level: i32, optname: i32, noalias optval: &u8, noalias optlen: &socklen_t) -> usize {
+    arch.syscall5(arch.SYS_getsockopt, usize(fd), usize(level), usize(optname), usize(optval), usize(optlen))
+}
+
+pub fn sendmsg(fd: i32, msg: &const arch.msghdr, flags: u32) -> usize {
+    arch.syscall3(arch.SYS_sendmsg, usize(fd), usize(msg), flags)
+}
+
+pub fn connect(fd: i32, addr: &const sockaddr, len: socklen_t) -> usize {
+    arch.syscall3(arch.SYS_connect, usize(fd), usize(addr), usize(len))
+}
+
+pub fn recvmsg(fd: i32, msg: &arch.msghdr, flags: u32) -> usize {
+    arch.syscall3(arch.SYS_recvmsg, usize(fd), usize(msg), flags)
+}
+
+pub fn recvfrom(fd: i32, noalias buf: &u8, len: usize, flags: u32,
+    noalias addr: ?&sockaddr, noalias alen: ?&socklen_t) -> usize
+{
+    arch.syscall6(arch.SYS_recvfrom, usize(fd), usize(buf), len, flags, usize(addr), usize(alen))
+}
+
+pub fn shutdown(fd: i32, how: i32) -> usize {
+    arch.syscall2(arch.SYS_shutdown, usize(fd), usize(how))
+}
+
+pub fn bind(fd: i32, addr: &const sockaddr, len: socklen_t) -> usize {
+    arch.syscall3(arch.SYS_bind, usize(fd), usize(addr), usize(len))
+}
+
+pub fn listen(fd: i32, backlog: i32) -> usize {
+    arch.syscall2(arch.SYS_listen, usize(fd), usize(backlog))
+}
+
+pub fn sendto(fd: i32, buf: &const u8, len: usize, flags: u32, addr: ?&const sockaddr, alen: socklen_t) -> usize {
+    arch.syscall6(arch.SYS_sendto, usize(fd), usize(buf), len, flags, usize(addr), usize(alen))
+}
+
+pub fn socketpair(domain: i32, socket_type: i32, protocol: i32, fd: [2]i32) -> usize {
+    arch.syscall4(arch.SYS_socketpair, usize(domain), usize(socket_type), usize(protocol), usize(&fd[0]))
+}
+
+pub fn accept(fd: i32, noalias addr: &sockaddr, noalias len: &socklen_t) -> usize {
+    accept4(fd, addr, len, 0)
+}
+
+pub fn accept4(fd: i32, noalias addr: &sockaddr, noalias len: &socklen_t, flags: u32) -> usize {
+    arch.syscall4(arch.SYS_accept4, usize(fd), usize(addr), usize(len), flags)
+}
+
+// error NameTooLong;
+// error SystemResources;
+// error Io;
+// 
+// pub fn if_nametoindex(name: []u8) -> %u32 {
+//     var ifr: ifreq = undefined;
+// 
+//     if (name.len >= ifr.ifr_name.len) {
+//         return error.NameTooLong;
+//     }
+// 
+//     const socket_ret = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
+//     const socket_err = getErrno(socket_ret);
+//     if (socket_err > 0) {
+//         return error.SystemResources;
+//     }
+//     const socket_fd = i32(socket_ret);
+//     @memcpy(&ifr.ifr_name[0], &name[0], name.len);
+//     ifr.ifr_name[name.len] = 0;
+//     const ioctl_ret = ioctl(socket_fd, SIOCGIFINDEX, &ifr);
+//     close(socket_fd);
+//     const ioctl_err = getErrno(ioctl_ret);
+//     if (ioctl_err > 0) {
+//         return error.Io;
+//     }
+//     return ifr.ifr_ifindex;
+// }
+
+pub const stat = arch.stat;
+pub const timespec = arch.timespec;
+
+pub fn fstat(fd: i32, stat_buf: &stat) -> usize {
+    arch.syscall2(arch.SYS_fstat, usize(fd), usize(stat_buf))
+}