* Robert Solomon <drrob...@gmail.com> [221028 07:36]:
> On ubuntu 22.04, I would like the walk function to NOT follow symlinks to
> other filesystems. The find command uses the -xdev switch to achieve this.
>
> How can I get walk to behave like the -xdev switch to find?
On Linux:
---- getdevid_linux.go
package main
import (
"io/fs"
"syscall"
)
type DevId uint64
// GetDevice returns the Device ID on which the given file resides.
func GetDevice(path string, fi fs.FileInfo) DevId {
var stat = fi.Sys().(*syscall.Stat_t)
return DevId(stat.Dev)
}
----
Then before calling filepath.Walk, filepath.WalkDir (more efficient), or
fs.WalkDir, obtain the device ID of the root. In the call to WalkDir,
pass this device ID to your walk function:
err = filepath.WalkDir(root, func(path string, d fs.DirEntry, err
error) error { return MyWalkFn(devId, path, d, err) })
In MyWalkFn, use d to obtain the device ID of the current path, and
return fs.SkipDir if the device IDs do not match.
...Marvin
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