> The idea is to allow /proc/mounts to display all of the mount options > that were used to mount a particular filesystem. This is useful if > you want /proc/mounts to replace /etc/mtab. > > I keep thinking that this is really the wrong approach, though, since > it means adding a lot of coding to every single filesystem to > reconstruct the mount options, and in some cases it will still never > be enough to reconstruct exactly what was in /etc/mtab. (For example, > the fully qualified domain named passed into some remote filesystem.) > > It seems to me the right answer would be to enhance the mount(2) > system call with a new mount operation which would allow the user > space mount command can stash exactly the options used to mount the > filesystem. Well, that would be good for emulating /etc/mtab. But the problem is that that's wrong a lot of times. For example in ext* "mount -oremount,opt" doesn't reset all options, it just changes "opt". And this is different from fs to fs, so there's no easy way to handle it from generic code. I think it shouln't be hard to keep the shown mount options in sync with the parsed options. The problem is just that people have been lazy to do that, because /etc/mtab was good enough. Miklos - To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
