1 files changed, 90 insertions, 7 deletions
diff --git a/lib/std/os/plan9.zig b/lib/std/os/plan9.zig
index 354e05e570..a01e6f59eb 100644
--- a/lib/std/os/plan9.zig
+++ b/lib/std/os/plan9.zig
@@ -11,13 +11,96 @@ pub const syscall_bits = switch (builtin.cpu.arch) {
     .x86_64 => @import("plan9/x86_64.zig"),
     else => @compileError("more plan9 syscall implementations (needs more inline asm in stage2"),
 };
-pub const E = @import("plan9/errno.zig").E;
-/// Get the errno from a syscall return value, or 0 for no error.
-pub fn getErrno(r: usize) E {
-    const signed_r = @as(isize, @bitCast(r));
-    const int = if (signed_r > -4096 and signed_r < 0) -signed_r else 0;
-    return @as(E, @enumFromInt(int));
-}
+/// Ported from /sys/include/ape/errno.h
+pub const E = enum(u16) {
+    SUCCESS = 0,
+    DOM = 1000,
+    RANGE = 1001,
+    PLAN9 = 1002,
+
+    @"2BIG" = 1,
+    ACCES = 2,
+    AGAIN = 3,
+    // WOULDBLOCK = 3, // TODO errno.h has 2 names for 3
+    BADF = 4,
+    BUSY = 5,
+    CHILD = 6,
+    DEADLK = 7,
+    EXIST = 8,
+    FAULT = 9,
+    FBIG = 10,
+    INTR = 11,
+    INVAL = 12,
+    IO = 13,
+    ISDIR = 14,
+    MFILE = 15,
+    MLINK = 16,
+    NAMETOOLONG = 17,
+    NFILE = 18,
+    NODEV = 19,
+    NOENT = 20,
+    NOEXEC = 21,
+    NOLCK = 22,
+    NOMEM = 23,
+    NOSPC = 24,
+    NOSYS = 25,
+    NOTDIR = 26,
+    NOTEMPTY = 27,
+    NOTTY = 28,
+    NXIO = 29,
+    PERM = 30,
+    PIPE = 31,
+    ROFS = 32,
+    SPIPE = 33,
+    SRCH = 34,
+    XDEV = 35,
+
+    // bsd networking software
+    NOTSOCK = 36,
+    PROTONOSUPPORT = 37,
+    // PROTOTYPE = 37, // TODO errno.h has two names for 37
+    CONNREFUSED = 38,
+    AFNOSUPPORT = 39,
+    NOBUFS = 40,
+    OPNOTSUPP = 41,
+    ADDRINUSE = 42,
+    DESTADDRREQ = 43,
+    MSGSIZE = 44,
+    NOPROTOOPT = 45,
+    SOCKTNOSUPPORT = 46,
+    PFNOSUPPORT = 47,
+    ADDRNOTAVAIL = 48,
+    NETDOWN = 49,
+    NETUNREACH = 50,
+    NETRESET = 51,
+    CONNABORTED = 52,
+    ISCONN = 53,
+    NOTCONN = 54,
+    SHUTDOWN = 55,
+    TOOMANYREFS = 56,
+    TIMEDOUT = 57,
+    HOSTDOWN = 58,
+    HOSTUNREACH = 59,
+    GREG = 60,
+
+    // These added in 1003.1b-1993
+    CANCELED = 61,
+    INPROGRESS = 62,
+
+    // We just add these to be compatible with std.os, which uses them,
+    // They should never get used.
+    DQUOT,
+    CONNRESET,
+    OVERFLOW,
+    LOOP,
+    TXTBSY,
+
+    pub fn init(r: usize) E {
+        const signed_r: isize = @bitCast(r);
+        const int = if (signed_r > -4096 and signed_r < 0) -signed_r else 0;
+        return @enumFromInt(int);
+    }
+};
 // The max bytes that can be in the errstr buff
 pub const ERRMAX = 128;
 var errstr_buf: [ERRMAX]u8 = undefined;