I now have this working as I want using filepath/walk.
But if I try to use a concurrent walk operation, like the one originally
written by Michael T Jones, I get behavior that seems to treat any return
of SkipDir as a fatal error and all walking stops. filepath/walk does not
do this; it continues to the next target correctly.
I feel I'm missing something. Am I?
On Friday, October 28, 2022 at 10:06:39 PM UTC-4 Robert Solomon wrote:
> Thank you very much
>
> On Fri, Oct 28, 2022, 8:15 AM Marvin Renich <mr...@renich.org> wrote:
>
>> * Robert Solomon <drro...@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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>>
>
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