On Feb 7 11:19, Jeremy Drake via Cygwin wrote: > 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.
Go for it. There's already matching logic in fhandler/proc.cc, function format_proc_partitions() for the "win-mounts" column of /proc/partitions. Probably this can be reused. Corinna -- 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
