Hey, On Sun, Jan 29, 2012 at 12:09 PM, Stef Bon <s...@bononline.nl> wrote: > a. can the udisks mount monitor also provide this information to other > apps, like dolphin and autofs. > I see that lot's of apps/programs are "interested" in mountinfo, and > poll/scan the mountinfo file for that purpose. > Isn't it better to have one prog do that (==udisks) and others get the > information via a socket/dbus?
I think applications should just be reading /proc/self/mountinfo (or similar if not on a recent Linux) themselves. For the mounts that are block devices, udisks provides the mount point(s) as a D-Bus property http://udisks.freedesktop.org/docs/latest/gdbus-org.freedesktop.UDisks2.Filesystem.html#gdbus-property-org-freedesktop-UDisks2-Filesystem.MountPoints but that's not really a replacement for reading /proc/self/mountinfo yourself. > b. does udisks also provide information about non local mounts (cifs, > fuse etc) , so no disks? Nope, udisks is only concerned with block devices and storage devices... So, yeah, a file manager like Nautilus where you want to show mounts from both storage devices and, say, NFS mounts will have to look at /proc/self/mountinfo itself in addition to other sources like udisks or whatever. (In GNOME 3.4, the gvfs-udisks2-volume-monitor process does that and it presents the information through the GVolumeMonitor/GDrive/GVolume/GMount APIs.) > c. I've been thinking about the ability to make the kernel export > mountinfo via netlink. Everytime the kernel mounts, a message is send > via netlink to userspace. Doesn't it make the monitoring easier??? Now > the whole mountinfo file has to be parsed, sorted and checked for changes. I don't think so. I think the current approach with rereading /proc/self/mountinfo whenever there's a change [1] is good enough. The key here is to keep kernel<->userspace interfaces as simple as possible. Thanks, David [1] : See e.g. http://cgit.freedesktop.org/udisks/tree/src/udisksmountmonitor.c?id=1.91.0#n298 for one way to get notified when the file changes _______________________________________________ devkit-devel mailing list devkit-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/devkit-devel
