| // Copyright 2009 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package syscall |
| |
| import ( |
| "sync" |
| "unsafe" |
| ) |
| |
| const _SYS_DUP3 = 0 |
| |
| // See version list in https://github.com/DragonFlyBSD/DragonFlyBSD/blob/master/sys/sys/param.h |
| var ( |
| osreldateOnce sync.Once |
| osreldate uint32 |
| ) |
| |
| // First __DragonFly_version after September 2019 ABI changes |
| // http://lists.dragonflybsd.org/pipermail/users/2019-September/358280.html |
| const _dragonflyABIChangeVersion = 500705 |
| |
| func supportsABI(ver uint32) bool { |
| osreldateOnce.Do(func() { osreldate, _ = SysctlUint32("kern.osreldate") }) |
| return osreldate >= ver |
| } |
| |
| func direntIno(buf []byte) (uint64, bool) { |
| return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno)) |
| } |
| |
| func direntReclen(buf []byte) (uint64, bool) { |
| namlen, ok := direntNamlen(buf) |
| if !ok { |
| return 0, false |
| } |
| return (16 + namlen + 1 + 7) &^ 7, true |
| } |
| |
| func direntNamlen(buf []byte) (uint64, bool) { |
| return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen)) |
| } |