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`go install sneak.berlin/go/sfdupes/cmd/sfdupes@...` found no package: the command was built from `package main` in the repository root. It now lives in `cmd/sfdupes/main.go`, whose one call is `sfdupes.Main()`, and every other Go file moved with `git mv` to `internal/sfdupes`, as `REPO_POLICIES.md` and the Go style guide require. The `Makefile` builds `./cmd/sfdupes` and sets `Version` by its new import path. README "Install" and `TODO.md` give the new paths; the fleet-written "flat layout" divergence is gone. Rule suppressed: each test file carries `//nolint:testpackage`, since the tests call unexported functions throughout. Model: opus-5-5
53 lines
1.2 KiB
Go
53 lines
1.2 KiB
Go
//go:build darwin
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package sfdupes
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import (
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"slices"
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"golang.org/x/sys/unix"
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)
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// nonPersistentFilesystems returns the device ID of every mounted
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// filesystem that is not persistent, with its type, from the system's
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// list of mounted filesystems. The device ID is read with lstat on the
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// mount point. Where one filesystem is mounted over another on the same
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// mount point, the later one in the list counts. A mount point that
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// lstat cannot reach is left out.
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func nonPersistentFilesystems() (map[uint64]string, error) {
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// The first call counts the filesystems, the second lists them.
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n, err := unix.Getfsstat(nil, unix.MNT_NOWAIT)
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if err != nil {
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return nil, err
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}
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list := make([]unix.Statfs_t, n)
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n, err = unix.Getfsstat(list, unix.MNT_NOWAIT)
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if err != nil {
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return nil, err
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}
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mounts := make(map[string]string, n)
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for _, st := range list[:n] {
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mounts[unix.ByteSliceToString(st.Mntonname[:])] =
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unix.ByteSliceToString(st.Fstypename[:])
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}
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types := nonPersistentFilesystemTypes()
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devices := make(map[uint64]string)
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for mountPoint, fsType := range mounts {
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if !slices.Contains(types, fsType) {
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continue
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}
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if dev, ok := deviceOfPath(mountPoint); ok {
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devices[dev] = fsType
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}
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}
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return devices, nil
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}
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