47 lines
1.7 KiB
Go
47 lines
1.7 KiB
Go
// Copyright 2009,2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package syscall
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import (
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"sync"
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"unsafe"
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)
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const (
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_SYS_FSTAT_FREEBSD12 = 551 // { int fstat(int fd, _Out_ struct stat *sb); }
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_SYS_FSTATAT_FREEBSD12 = 552 // { int fstatat(int fd, _In_z_ char *path, _Out_ struct stat *buf, int flag); }
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_SYS_GETDIRENTRIES_FREEBSD12 = 554 // { ssize_t getdirentries(int fd, _Out_writes_bytes_(count) char *buf, size_t count, _Out_ off_t *basep); }
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_SYS_STATFS_FREEBSD12 = 555 // { int statfs(_In_z_ char *path, _Out_ struct statfs *buf); }
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_SYS_FSTATFS_FREEBSD12 = 556 // { int fstatfs(int fd, _Out_ struct statfs *buf); }
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_SYS_GETFSSTAT_FREEBSD12 = 557 // { int getfsstat(_Out_writes_bytes_opt_(bufsize) struct statfs *buf, long bufsize, int mode); }
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_SYS_MKNODAT_FREEBSD12 = 559 // { int mknodat(int fd, _In_z_ char *path, mode_t mode, dev_t dev); }
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)
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// See https://www.freebsd.org/doc/en_US.ISO8859-1/books/porters-handbook/versions.html.
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var (
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osreldateOnce sync.Once
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osreldate uint32
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)
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// INO64_FIRST from /usr/src/lib/libc/sys/compat-ino64.h
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const _ino64First = 1200031
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func supportsABI(ver uint32) bool {
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osreldateOnce.Do(func() { osreldate, _ = SysctlUint32("kern.osreldate") })
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return osreldate >= ver
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}
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func direntIno(buf []byte) (uint64, bool) {
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return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno))
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}
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func direntReclen(buf []byte) (uint64, bool) {
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return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
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}
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func direntNamlen(buf []byte) (uint64, bool) {
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return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen))
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}
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