On 10/29/2010 20:05, David DEMELIER wrote:
2010/10/29 Adam Vande More<[email protected]>:
On Fri, Oct 29, 2010 at 7:53 AM, dan<[email protected]> wrote:
On 10/29/10 13:22, Adam Vande More wrote:
On Fri, Oct 29, 2010 at 6:13 AM, dan<[email protected]> wrote:
Thank you for your research and prompt response. The module was
available.
I tried both: kldload in command line and adding it in loader.conf.
Note. In case the module has not been been loaded,as a user, here, one
gets
2 messages
"mount_msdosfs: cannot find or load msdosfs_iconv kernel module"
AND
"mount_msdosfs: msdosfs_iconv: Operation not permitted"
I wonder what Operation is not permitted as a user and what rights the
user
needs.
sysctl vfs.usermount=1
Although it doesn't seem correct that you can mount that FS if it's
already
been mounted previously by root when that sysctl is at 0.
Hello
vfs.usermount is already set. In fact, I can readily mount the filesystem
if I do not specify "-L ...".
I did mount and then soon unmount the filesystem as root with "-L ...".
I see now. The loading of the kernel module is not permitted as I think the
mount command attempts to load it if necessary. I'm not aware of any method
of granting access to user which would allow them to load/unload kernel
modules. Only root level privs can do that.
--
Adam Vande More
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I have the same trouble, I usually mount device by user with
vfs.usermount=1 but for libiconv I need root...
--
Demelier David
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Hello again,
I took a deeper look at the code. And later I found some work on the
topic. Standard users receive error when mounting the file system -even
if they have rights to mount it- because :
"character set conversion tables need to be loaded into kernel" and "
that's not allowed to plain users, because charset tables are large
enough to initiate a denial of service by filling kernel memory with
many tables"
As I lernt while searching, one solution to the problem (if one wants to
avoid mounting as root) is to preload some conversion tables when the
system starts up. Some software has been developed to reach this goal:
kiconvtool, that one can find in the ports tree [1] and that has been
developed by Dmitry Marakasov [2] (thanks !!!).
By the way, even if this software solved a big part of the problem and
gave me "a huge hand", to let it completely work I needed to slightly
modify it because something was "missing".
Everything is explained in the following bug report :
http://www.freebsd.org/cgi/query-pr.cgi?pr=151833
Thanks, Gentlemen, for the pointers ;)
d
[1] http://www.freebsd.org/cgi/cvsweb.cgi/ports/sysutils/kiconvtool/
[2] http://wiki.freebsd.org/DmitryMarakasov/kiconvtool
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