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Etienne PerotandgVisor bot
8a2e720b0d
`//pkg/tcpip/link/rawfile` is a package to deal with raw socket and file FDs. It is not only used for Netstack, but rather just generally useful raw file manipulation stuff. This change removes the Unix-error-to-`//pkg/tcpip`-error translation step from its functions; this is now the responsibility of its callers. Callers within Netstack now do the translation by themselves; the translation function is moved to `//pkg/tcpip`. This allows the `//pkg/tcpip/link/rawfile` package to not depend on `//pkg/tcpip`, which in turn means the `//pkg/eventfd` package (which depends on `rawfile`) no longer transitively depends on `//pkg/tcpip`, which in turns means the `//pkg/unet` package (which depends on `//pkg/eventfd`) no longer transitively depends on `//pkg/tcpip`, which in turns means that the `//pkg/eventchannel` package (which depends on `//pkg/unet`) no longer transitively depends on `//pkg/tcpip`, which in turns means that the `//pkg/metric` package (which depends on `//pkg/eventchannel`) no longer transitively depends on `//pkg/tcpip`, which finally means that the `//pkg/metric` package can be used within `//pkg/tcpip`. \o/ This changes does not make it use it, it just moves `rawfile`. PiperOrigin-RevId: 647943618
34 lines
1.1 KiB
Go
34 lines
1.1 KiB
Go
// Copyright 2018 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//go:build linux && !amd64 && !arm64
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// +build linux,!amd64,!arm64
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package rawfile
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import (
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"unsafe"
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"golang.org/x/sys/unix"
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)
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// BlockingPoll is just a stub function that forwards to the ppoll() system call
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// on non-amd64 and non-arm64 platforms.
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func BlockingPoll(fds *PollEvent, nfds int, timeout *unix.Timespec) (int, unix.Errno) {
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n, _, e := unix.Syscall6(unix.SYS_PPOLL, uintptr(unsafe.Pointer(fds)),
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uintptr(nfds), uintptr(unsafe.Pointer(timeout)), 0, 0, 0)
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return int(n), e
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}
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