implementation.nct

//! Darwin error classification and ABI values.

see ./index.nct

use /internal/os.{OSError, OSErrorKind, Platform}

#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 {
    if value.code == 4 {
        return OSErrorKind.interrupted
    }
    if value.code == 35 {
        return OSErrorKind.would_block
    }
    if value.code == 2 || value.code == 20 {
        return OSErrorKind.not_found
    }
    if value.code == 1 || value.code == 13 {
        return OSErrorKind.permission_denied
    }
    if value.code == 17 {
        return OSErrorKind.already_exists
    }
    if value.code == 9 || value.code == 14 || value.code == 21 || 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 sys_read: usize = 0x02000003

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

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

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

#target: "arm64-darwin"
const sys_unlink: usize = 0x0200000a

#target: "arm64-darwin"
const sys_rename: usize = 0x02000080

#target: "arm64-darwin"
const sys_munmap: usize = 0x02000049

#target: "arm64-darwin"
const sys_mmap: usize = 0x020000c5

#target: "arm64-darwin"
const sys_stat64: usize = 0x02000152

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

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

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

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

#target: "arm64-darwin"
const mmap_read_write: usize = 3

#target: "arm64-darwin"
const mmap_private_anonymous: usize = 0x1002

#target: "arm64-darwin"
const mmap_no_file: usize = 0xffffffffffffffff

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

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

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

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

#target: "arm64-darwin"
// Darwin arm64 `struct stat`: SDK sys/stat.h __DARWIN_STRUCT_STAT64.
const stat_buffer_size: usize = 144

#target: "arm64-darwin"
const stat_mode_offset: usize = 4

#target: "arm64-darwin"
const stat_size_offset: usize = 96

#target: "arm64-darwin"
const stat_mode_regular: u16 = 32768

#target: "arm64-darwin"
const stat_mode_directory: u16 = 16384