On Fri, 7 Feb 2025, Corinna Vinschen via Cygwin wrote: > On Feb 6 13:31, Jeremy Drake via Cygwin wrote: > > Now that my patch to escape characters in /proc/mounts has been applied, > > I'll get back to what I was thinking about back in June. I would like to > > have a way to list Windows volume roots in Cygwin, and it seems to make > > sense to me to expose them via getmntent, /proc/mounts, etc. The way I > > see this working is probably to replace the available_drives mechanism for > > enumerating mounts in favor of using FindFirst/NextVolumeW and > > GetVolumePathNamesForVolumeNameW to enumerate cygdrive mount points. > > Been there, done that, but that was more than 10 years ago, so things > might have changed. At the time, the volume manager was incredibly > slow. Enumerating and converting volume paths from one style into the > other just took too much time. And, as you know, Cygwin already is > slow... > > Still, if you want to do that, it should not be part of the standard > mount points becasue this is another level of implementation. These are > the POSIX mount points handled by Cygwin. That should be part of the > cygdrive handling. Sounds like you were mulling over this anyway.
Right, the cygdrive_getmntent function in mount.cc. > But it's not quite clear what the expected output should be. > So what is the expected output in the cygdrive dir? > > What I could imagine is something like this. Assuming two drives, one > of them mounted into a dir: > > C: \Device\HarddiskVolume1 > C:\foo \Device\HarddiskVolume2 > > $ ls -gG /cygdrive > d---r-x---+ 1 0 Feb 7 03:38 c > drwxrwxr-x 1 0 Jan 8 11:02 c_foo -> /mnt/c/foo I'm thinking much simpler than that. I'm just thinking about enumerating directory mounts in the cygdrive_getmntent function. So /cygdrive looks the same as it does now, just the roots of drives, but for instance mount would show something like C: on /cygdrive/c type ntfs (binary,noacl,posix=0,user,noumount,auto) C:/foo on /cygdrive/c/foo type ntfs (binary,noacl,posix=0,user,noumount,auto) Presumably this would also make df privy to them. -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple
