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