bfc1465a2c
After these changes, in order to add Darwin bind-mount implementation, one only needs: * Adjust HasBindMounts definition in mount.go * Provide implementation in mount_darwin.go There was no consensus on adding dependency on bindfs, that seems to be the only working solution for bind-mounts on Darwin as of today, in https://github.com/containerd/containerd/pull/8789, that's why the actual implementation is not added in current PR. As a bonus, Linux FUSE-related code was moved to a separate file and possibly could be reused on FreeBSD, though this needs testing. Signed-off-by: Marat Radchenko <marat@slonopotamus.org>
51 lines
1.3 KiB
Go
51 lines
1.3 KiB
Go
/*
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Copyright The containerd Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package mount
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import (
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"os/exec"
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"golang.org/x/sys/unix"
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)
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// fuseSuperMagic is defined in statfs(2)
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const fuseSuperMagic = 0x65735546
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func isFUSE(dir string) bool {
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var st unix.Statfs_t
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if err := unix.Statfs(dir, &st); err != nil {
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return false
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}
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return st.Type == fuseSuperMagic
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}
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// unmountFUSE attempts to unmount using fusermount/fusermount3 helper binary.
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//
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// For FUSE mounts, using these helper binaries is preferred, see:
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// https://github.com/containerd/containerd/pull/3765#discussion_r342083514
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func unmountFUSE(target string) error {
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var err error
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for _, helperBinary := range []string{"fusermount3", "fusermount"} {
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cmd := exec.Command(helperBinary, "-u", target)
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err = cmd.Run()
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if err == nil {
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return nil
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}
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}
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return err
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}
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