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a2ea36a517
The vast majority of libc functions return `c_int` for the return value, when setting errno. This utility function is for those cases. Other cases can hand-roll the logic, or additional helpers can be added.
32 lines
1.1 KiB
Zig
32 lines
1.1 KiB
Zig
const std = @import("std");
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const common = @import("../common.zig");
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const builtin = @import("builtin");
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comptime {
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if (builtin.target.isMuslLibC()) {
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@export(&unameLinux, .{ .name = "uname", .linkage = common.linkage, .visibility = common.visibility });
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}
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if (builtin.target.isWasiLibC()) {
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@export(&unameWasi, .{ .name = "uname", .linkage = common.linkage, .visibility = common.visibility });
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}
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}
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fn unameLinux(uts: *std.os.linux.utsname) callconv(.c) c_int {
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return common.errno(std.os.linux.uname(uts));
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}
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fn unameWasi(uts: *std.c.utsname) callconv(.c) c_int {
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// note the @bitCast's for NUL termination!
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uts.sysname[0..5].* = @bitCast("wasi".*);
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uts.nodename[0..7].* = @bitCast("(none)".*);
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uts.release[0..6].* = @bitCast("0.0.0".*);
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uts.version[0..6].* = @bitCast("0.0.0".*);
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uts.machine[0..7].* = @bitCast(switch (builtin.target.cpu.arch) {
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.wasm32 => "wasm32",
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.wasm64 => "wasm64",
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else => comptime unreachable,
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}.*);
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uts.domainname[0..7].* = @bitCast("(none)".*);
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return 0;
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}
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