* Remounting File Systems
@ 2003-11-20 16:41 Joseph D. Wagner
2003-11-21 4:48 ` Glynn Clements
2003-11-21 17:03 ` Jamie LeTual
0 siblings, 2 replies; 5+ messages in thread
From: Joseph D. Wagner @ 2003-11-20 16:41 UTC (permalink / raw)
To: linux-c-programming
I'm writing a program that has to remount a file system on the fly for the
purpose of changing the mount flags.
Is there any system function that can tell me what the mount flags are for a
currently mounted file system?
TIA.
Joseph D. Wagner
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Remounting File Systems
2003-11-21 4:48 ` Glynn Clements
@ 2003-11-20 18:03 ` Joseph D. Wagner
2003-11-21 7:59 ` Glynn Clements
0 siblings, 1 reply; 5+ messages in thread
From: Joseph D. Wagner @ 2003-11-20 18:03 UTC (permalink / raw)
To: Glynn Clements; +Cc: linux-c-programming
> > I'm writing a program that has to remount a file system on the fly for
> > the purpose of changing the mount flags.
> >
> > Is there any system function that can tell me what the mount flags are
> > for a currently mounted file system?
>
> setmntent/getmntent/endmntent, possibly in conjunction with hasmntopt.
Nice try, but there's still the unlikely chance that /etc/fstab or /etc/mtab
have not been updated to reflect the CURRENTLY MOUNTED file system.
Joseph D. Wagner
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Remounting File Systems
2003-11-20 16:41 Remounting File Systems Joseph D. Wagner
@ 2003-11-21 4:48 ` Glynn Clements
2003-11-20 18:03 ` Joseph D. Wagner
2003-11-21 17:03 ` Jamie LeTual
1 sibling, 1 reply; 5+ messages in thread
From: Glynn Clements @ 2003-11-21 4:48 UTC (permalink / raw)
To: Joseph D. Wagner; +Cc: linux-c-programming
Joseph D. Wagner wrote:
> I'm writing a program that has to remount a file system on the fly for the
> purpose of changing the mount flags.
>
> Is there any system function that can tell me what the mount flags are for a
> currently mounted file system?
setmntent/getmntent/endmntent, possibly in conjunction with hasmntopt.
--
Glynn Clements <glynn.clements@virgin.net>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Remounting File Systems
2003-11-20 18:03 ` Joseph D. Wagner
@ 2003-11-21 7:59 ` Glynn Clements
0 siblings, 0 replies; 5+ messages in thread
From: Glynn Clements @ 2003-11-21 7:59 UTC (permalink / raw)
To: Joseph D. Wagner; +Cc: linux-c-programming
Joseph D. Wagner wrote:
> > > I'm writing a program that has to remount a file system on the fly for
> > > the purpose of changing the mount flags.
> > >
> > > Is there any system function that can tell me what the mount flags are
> > > for a currently mounted file system?
> >
> > setmntent/getmntent/endmntent, possibly in conjunction with hasmntopt.
>
> Nice try, but there's still the unlikely chance that /etc/fstab or /etc/mtab
> have not been updated to reflect the CURRENTLY MOUNTED file system.
In which case, I think that you're stuffed; /proc/mounts doesn't list
the mount flags (apart from ro/rw), [f]statfs() doesn't provide this
information, and I can't see any plausible-looking ioctl()s.
--
Glynn Clements <glynn.clements@virgin.net>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Remounting File Systems
2003-11-20 16:41 Remounting File Systems Joseph D. Wagner
2003-11-21 4:48 ` Glynn Clements
@ 2003-11-21 17:03 ` Jamie LeTual
1 sibling, 0 replies; 5+ messages in thread
From: Jamie LeTual @ 2003-11-21 17:03 UTC (permalink / raw)
To: Joseph D. Wagner; +Cc: linux-c-programming
Use the Source, Luke!
I would look at the source code for mount(8)
Peace,
Jamie
Joseph D. Wagner wrote:
>I'm writing a program that has to remount a file system on the fly for the
>purpose of changing the mount flags.
>
>Is there any system function that can tell me what the mount flags are for a
>currently mounted file system?
>
>TIA.
>
>Joseph D. Wagner
>
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>
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2003-11-21 17:03 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
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2003-11-20 16:41 Remounting File Systems Joseph D. Wagner
2003-11-21 4:48 ` Glynn Clements
2003-11-20 18:03 ` Joseph D. Wagner
2003-11-21 7:59 ` Glynn Clements
2003-11-21 17:03 ` Jamie LeTual
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