134 lines
3.9 KiB
Go
134 lines
3.9 KiB
Go
// Copyright 2009 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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//go:build hurd || linux
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// +build hurd linux
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// glibc library calls.
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package syscall
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import (
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"internal/itoa"
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"internal/race"
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"unsafe"
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)
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//sys Openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
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//__go_openat(dirfd _C_int, path *byte, flags _C_int, mode Mode_t) _C_int
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//sys futimesat(dirfd int, path *byte, times *[2]Timeval) (err error)
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//futimesat(dirfd _C_int, path *byte, times *[2]Timeval) _C_int
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func Futimesat(dirfd int, path string, tv []Timeval) (err error) {
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if len(tv) != 2 {
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return EINVAL
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}
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return futimesat(dirfd, StringBytePtr(path), (*[2]Timeval)(unsafe.Pointer(&tv[0])))
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}
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func Futimes(fd int, tv []Timeval) (err error) {
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// Believe it or not, this is the best we can do on GNU/Linux
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// (and is what glibc does).
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return Utimes("/proc/self/fd/"+itoa.Itoa(fd), tv)
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}
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//sys accept4(fd int, sa *RawSockaddrAny, len *Socklen_t, flags int) (nfd int, err error)
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//accept4(fd _C_int, sa *RawSockaddrAny, len *Socklen_t, flags _C_int) _C_int
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func Accept4(fd int, flags int) (nfd int, sa Sockaddr, err error) {
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var rsa RawSockaddrAny
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var len Socklen_t = SizeofSockaddrAny
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nfd, err = accept4(fd, &rsa, &len, flags)
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if err != nil {
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return -1, nil, err
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}
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sa, err = anyToSockaddr(&rsa)
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if err != nil {
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Close(nfd)
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return -1, nil, err
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}
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return nfd, sa, nil
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}
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//sysnb Dup3(oldfd int, newfd int, flags int) (err error)
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//dup3(oldfd _C_int, newfd _C_int, flags _C_int) _C_int
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//sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
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//faccessat(dirfd _C_int, pathname *byte, mode _C_int, flags _C_int) _C_int
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//sys Fallocate(fd int, mode uint32, off int64, len int64) (err error)
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//fallocate(fd _C_int, mode _C_int, offset Offset_t, len Offset_t) _C_int
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//sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
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//fchmodat(dirfd _C_int, pathname *byte, mode Mode_t, flags _C_int) _C_int
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//sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
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//fchownat(dirfd _C_int, path *byte, owner Uid_t, group Gid_t, flags _C_int) _C_int
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//sys Flock(fd int, how int) (err error)
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//flock(fd _C_int, how _C_int) _C_int
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func Getdents(fd int, buf []byte) (n int, err error) {
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var p *byte
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if len(buf) > 0 {
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p = &buf[0]
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} else {
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p = (*byte)(unsafe.Pointer(&_zero))
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}
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s := SYS_GETDENTS64
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if s == 0 {
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s = SYS_GETDENTS
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}
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r1, _, errno := Syscall(uintptr(s), uintptr(fd), uintptr(unsafe.Pointer(p)), uintptr(len(buf)))
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n = int(r1)
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if n < 0 {
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err = errno
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}
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return
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}
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func ReadDirent(fd int, buf []byte) (n int, err error) {
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return Getdents(fd, buf)
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}
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//sys Mkdirat(dirfd int, path string, mode uint32) (err error)
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//mkdirat(dirfd _C_int, path *byte, mode Mode_t) _C_int
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//sys Mknodat(dirfd int, path string, mode uint32, dev int) (err error)
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//mknodat(dirfd _C_int, path *byte, mode Mode_t, dev _dev_t) _C_int
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//sysnb pipe2(p *[2]_C_int, flags int) (err error)
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//pipe2(p *[2]_C_int, flags _C_int) _C_int
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func Pipe2(p []int, flags int) (err error) {
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if len(p) != 2 {
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return EINVAL
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}
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var pp [2]_C_int
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err = pipe2(&pp, flags)
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p[0] = int(pp[0])
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p[1] = int(pp[1])
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return
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}
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//sys sendfile(outfd int, infd int, offset *Offset_t, count int) (written int, err error)
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//sendfile64(outfd _C_int, infd _C_int, offset *Offset_t, count Size_t) Ssize_t
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func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
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if race.Enabled {
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race.ReleaseMerge(unsafe.Pointer(&ioSync))
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}
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var soff Offset_t
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var psoff *Offset_t
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if offset != nil {
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soff = Offset_t(*offset)
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psoff = &soff
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}
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written, err = sendfile(outfd, infd, psoff, count)
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if offset != nil {
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*offset = int64(soff)
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}
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return
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}
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//sys SyncFileRange(fd int, off int64, n int64, flags int) (err error)
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//sync_file_range(fd _C_int, off Offset_t, n Offset_t, flags _C_uint) _C_int
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