43 lines
1016 B
Zig
43 lines
1016 B
Zig
pub use @import("wasi/core.zig");
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pub const STDIN_FILENO = 0;
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pub const STDOUT_FILENO = 1;
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pub const STDERR_FILENO = 2;
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pub fn getErrno(r: usize) usize {
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const signed_r = @bitCast(isize, r);
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return if (signed_r > -4096 and signed_r < 0) @intCast(usize, -signed_r) else 0;
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}
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pub fn write(fd: i32, buf: [*]const u8, count: usize) usize {
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var nwritten: usize = undefined;
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const ciovs = ciovec_t{
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.buf = buf,
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.buf_len = count,
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};
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const err = fd_write(@bitCast(fd_t, isize(fd)), &ciovs, 1, &nwritten);
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if (err == ESUCCESS) {
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return nwritten;
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} else {
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return @bitCast(usize, -isize(err));
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}
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}
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pub fn read(fd: i32, buf: [*]u8, nbyte: usize) usize {
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var nread: usize = undefined;
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const iovs = iovec_t{
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.buf = buf,
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.buf_len = nbyte,
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};
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const err = fd_read(@bitCast(fd_t, isize(fd)), &iovs, 1, &nread);
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if (err == ESUCCESS) {
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return nread;
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} else {
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return @bitCast(usize, -isize(err));
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}
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}
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