8b5cc2e1dc
full diff: https://github.com/containerd/consolve/compare/v1.0.0...v1.0.1
vendor golang.org/x/sys 2334cc1a136f0a5b4384f1a27e3634457be08553
full diff: ed371f2e16...2334cc1a13
- unix: add Darwin support for clonefile syscalls
- Adds openat2 for linux
openat2 is a new syscall added to Linux 5.6. It provides a superset of
openat(2) functionality, extending it with flags telling the kernel how
to resolve the paths.
For more info, see https://lwn.net/Articles/803237/
NOTE that this is a second attempt to add the call; the previous one
(https://golang.org/cl/227280) was reverted
(https://golang.org/cl/227846) due to the test case failure on ARM
(https://golang.org/issue/38357).
This CL has the test case reworked to be less assumptive to the testing
environment. In particular, it first tries if the most simplistic
openat2() call succeeds, and skips the test otherwise. It is done that
way because CI can be under under different kernels and in various
envrionments -- in particular, Docker+seccomp can result in EPERM from a
system call (which is not expected otherwise).
For previous discussions about the test case, see
https://golang.org/cl/227865.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
78 lines
1.8 KiB
Go
78 lines
1.8 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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// illumos system calls not present on Solaris.
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// +build amd64,illumos
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package unix
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import "unsafe"
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func bytes2iovec(bs [][]byte) []Iovec {
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iovecs := make([]Iovec, len(bs))
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for i, b := range bs {
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iovecs[i].SetLen(len(b))
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if len(b) > 0 {
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// somehow Iovec.Base on illumos is (*int8), not (*byte)
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iovecs[i].Base = (*int8)(unsafe.Pointer(&b[0]))
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} else {
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iovecs[i].Base = (*int8)(unsafe.Pointer(&_zero))
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}
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}
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return iovecs
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}
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//sys readv(fd int, iovs []Iovec) (n int, err error)
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func Readv(fd int, iovs [][]byte) (n int, err error) {
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iovecs := bytes2iovec(iovs)
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n, err = readv(fd, iovecs)
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return n, err
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}
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//sys preadv(fd int, iovs []Iovec, off int64) (n int, err error)
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func Preadv(fd int, iovs [][]byte, off int64) (n int, err error) {
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iovecs := bytes2iovec(iovs)
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n, err = preadv(fd, iovecs, off)
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return n, err
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}
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//sys writev(fd int, iovs []Iovec) (n int, err error)
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func Writev(fd int, iovs [][]byte) (n int, err error) {
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iovecs := bytes2iovec(iovs)
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n, err = writev(fd, iovecs)
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return n, err
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}
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//sys pwritev(fd int, iovs []Iovec, off int64) (n int, err error)
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func Pwritev(fd int, iovs [][]byte, off int64) (n int, err error) {
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iovecs := bytes2iovec(iovs)
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n, err = pwritev(fd, iovecs, off)
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return n, err
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}
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//sys accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error)
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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 = SizeofSockaddrAny
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nfd, err = accept4(fd, &rsa, &len, flags)
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if err != nil {
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return
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}
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if len > SizeofSockaddrAny {
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panic("RawSockaddrAny too small")
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}
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sa, err = anyToSockaddr(fd, &rsa)
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if err != nil {
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Close(nfd)
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nfd = 0
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}
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return
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}
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