darwin.nct

//! Darwin error classification and syscall constants.

include ./index.nct

#target: "arm64-darwin"
func errno(code: i32): Errno {
    return Errno { code: code }
}

#target: "arm64-darwin"
func error_from_errno(value: Errno): OSError {
    return OSError {
        platform: Platform.macos,
        code: value.code,
        kind: kind_from_errno(value),
    }
}

#target: "arm64-darwin"
func kind_from_errno(value: Errno): OSErrorKind {
    // Darwin errno values used by the std syscall wrappers.
    if value.code == 4 {
        return OSErrorKind.interrupted
    }
    if value.code == 35 {
        return OSErrorKind.would_block
    }
    if value.code == 2 {
        return OSErrorKind.not_found
    }
    if value.code == 20 {
        return OSErrorKind.not_found
    }
    if value.code == 1 {
        return OSErrorKind.permission_denied
    }
    if value.code == 13 {
        return OSErrorKind.permission_denied
    }
    if value.code == 17 {
        return OSErrorKind.already_exists
    }
    if value.code == 9 {
        return OSErrorKind.invalid_input
    }
    if value.code == 14 {
        return OSErrorKind.invalid_input
    }
    if value.code == 21 {
        return OSErrorKind.invalid_input
    }
    if value.code == 22 {
        return OSErrorKind.invalid_input
    }
    if value.code == 32 {
        return OSErrorKind.broken_pipe
    }
    if value.code == 60 {
        return OSErrorKind.timed_out
    }
    if value.code == 45 {
        return OSErrorKind.unsupported
    }
    return OSErrorKind.unknown
}

#target: "arm64-darwin"
const darwin_sys_read: usize = 0x02000003

#target: "arm64-darwin"
const darwin_sys_write: usize = 0x02000004

#target: "arm64-darwin"
const darwin_sys_open: usize = 0x02000005

#target: "arm64-darwin"
const darwin_sys_close: usize = 0x02000006

#target: "arm64-darwin"
const darwin_open_read_only: usize = 0

#target: "arm64-darwin"
// O_WRONLY | O_CREAT | O_TRUNC
const darwin_open_create_truncate: usize = 0x0601

#target: "arm64-darwin"
// O_WRONLY | O_CREAT | O_APPEND
const darwin_open_create_append: usize = 0x0209

#target: "arm64-darwin"
// 0666, filtered by the process umask.
const darwin_create_mode: usize = 438

#target: "arm64-darwin"
const darwin_errno_interrupted: i32 = 4

#target: "arm64-darwin"
const darwin_sys_fcntl: usize = 0x0200005c

#target: "arm64-darwin"
const darwin_f_getpath: usize = 50

#target: "arm64-darwin"
const darwin_max_path_len: usize = 1024