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Date:      Thu, 09 Feb 2006 19:22:33 +0100
From:      martinko <martinkov@pobox.sk>
To:        freebsd-stable@freebsd.org
Subject:   Re: Trouble with mounting USB stick as user
Message-ID:  <dsg19a$73a$1@sea.gmane.org>
In-Reply-To: <43EA70E8.2030301@pobox.sk>
References:  <dsdfe8$1sd$1@sea.gmane.org>	<200602082003.k18K3ZQJ077077@lurza.secnetix.de>	<dsdnob$4q4$1@sea.gmane.org>	<Pine.LNX.4.62.0602081331510.13164@haller.snl.salk.edu>	<43EA6B21.8040307@pobox.sk> <43EA6E25.8090009@luna.afraid.org> <43EA70E8.2030301@pobox.sk>

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martinko wrote:
> Raaf wrote:
> 
> 
>>martinko wrote:
>> 
>>
>>
>>>Jorge Aldana wrote:
>>>   
>>>
>>>
>>>>Yea, your permissions are off, need rw on them as well.
>>>>
>>>>I caught this thread and the 3 steps do it nicely! You may need to
>>>>logoff and back on to get the group change going for your username
>>>>though, well I did.
>>>>
>>>>I caught the devfs setting but does anyone have one already set? It
>>>>should go in the rc.conf under /etc (I just want a ruleset or need one
>>>>if one is readily avaialble)
>>>>
>>>>     
>>>>
>>>>
>>>>>revfs_system_ruleset="mydevfsrules"
>>>>>       
>>>>>
>>>>
>>>>Jorge
>>>>
>>>>On Wed, 8 Feb 2006, martinko wrote:
>>>>
>>>>     
>>>>
>>>>
>>>>>Oliver Fromme wrote:
>>>>>
>>>>>       
>>>>>
>>>>>
>>>>>>martinko <martinkov@pobox.sk> wrote:
>>>>>>         
>>>>>>
>>>>>>
>>>>>>>Oliver Fromme wrote:
>>>>>>>           
>>>>>>>
>>>>>>>
>>>>>>>>martinko wrote:
>>>>>>>>             
>>>>>>>>
>>>>>>>>
>>>>>>>>>Oliver Fromme wrote:
>>>>>>>>>               
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>To enable user mounts, there are three conditions:
>>>>>>>>>>1.  sysctl vfs.usermount=1
>>>>>>>>>>2.  The user must have read+write permission on the device
>>>>>>>>>>   which is to be mounted.  This is usually accomplished
>>>>>>>>>>   by creating a special group for this device.
>>>>>>>>>>3.  The user must _own_ the mountpoint (r/w permission is
>>>>>>>>>>   not sufficient).
>>>>>>>>>>                 
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>[...]
>>>>>>>>>$ ll /dev/ad0
>>>>>>>>>crw-r-----  1 root  operator    0,  96 Feb  8 18:27 /dev/ad0
>>>>>>>>>               
>>>>>>>>>
>>>>>>>>
>>>>>>>>Condition #2 isn't met:  The device must be "rw" for for
>>>>>>>>the user (in this case for the operator group).  Note
>>>>>>>>that "r" is not sufficient, even for read-only mounts.
>>>>>>>>             
>>>>>>>>
>>>>>>>
>>>>>>>sure. but why did it mount /usr/home/mato/mnt/dos then ??
>>>>>>>           
>>>>>>>
>>>>>>
>>>>>>Maybe /dev/ad0s1 had different permissions?
>>>>>>
>>>>>>         
>>>>>>
>>>>>
>>>>>$ ls -la /dev/ad0*
>>>>>crw-r-----  1 root  operator    0,  96 Feb  8 18:27 /dev/ad0
>>>>>crw-r-----  1 root  operator    0,  97 Feb  8 18:27 /dev/ad0s1
>>>>>crw-r-----  1 root  operator    0,  98 Feb  8 18:27 /dev/ad0s2
>>>>>crw-r-----  1 root  operator    0,  99 Feb  8 18:27 /dev/ad0s3
>>>>>crw-r-----  1 root  operator    0, 101 Feb  8 19:27 /dev/ad0s3a
>>>>>crw-r-----  1 root  operator    0, 102 Feb  8 19:27 /dev/ad0s3b
>>>>>crw-r-----  1 root  operator    0, 103 Feb  8 18:27 /dev/ad0s3c
>>>>>crw-r-----  1 root  operator    0, 104 Feb  8 19:27 /dev/ad0s3d
>>>>>crw-r-----  1 root  operator    0, 105 Feb  8 19:27 /dev/ad0s3e
>>>>>crw-r-----  1 root  operator    0, 106 Feb  8 19:27 /dev/ad0s3f
>>>>>crw-r-----  1 root  operator    0, 100 Feb  8 18:27 /dev/ad0s4
>>>>>crw-r-----  1 root  operator    0, 107 Feb  8 18:27 /dev/ad0s5
>>>>>crw-r-----  1 root  operator    0, 108 Feb  8 18:27 /dev/ad0s6
>>>>>crw-r-----  1 root  operator    0, 109 Feb  8 18:27 /dev/ad0s7
>>>>>crw-r-----  1 root  operator    0, 110 Feb  8 18:27 /dev/ad0s8
>>>>>
>>>>>       
>>>>>
>>>
>>>ok, once again and with the righteous permissions..
>>>
>>>
>>>[mb-aw1n-bsd][mato][~]
>>>$ id
>>>uid=1001(mato) gid=1001(mato) groups=1001(mato), 0(wheel), 5(operator)
>>>[mb-aw1n-bsd][mato][~]
>>>$ sysctl vfs.usermount
>>>vfs.usermount: 1
>>>[mb-aw1n-bsd][mato][~]
>>>$ ll mnt/
>>>total 10
>>>drwxr-x---  2 mato  mato  512 Dec 11 20:44 cdrom
>>>drwxr-x---  2 mato  mato  512 Dec 11 20:44 dos
>>>drwxr-x---  2 mato  mato  512 Dec 11 20:44 fat
>>>drwxr-x---  2 mato  mato  512 Dec 11 20:44 lin
>>>drwxr-x---  2 mato  mato  512 Dec 11 20:44 win
>>>[mb-aw1n-bsd][mato][~]
>>>$ grep "/mato" /etc/fstab
>>>/dev/acd0       /usr/home/mato/mnt/cdrom        cd9660  ro,noauto
>>>0      0
>>>/dev/ad0s1      /usr/home/mato/mnt/dos  msdosfs ro,noauto       0       0
>>>/dev/ad0s5      /usr/home/mato/mnt/fat  msdosfs
>>>ro,noatime,noauto,-Lsk_SK.ISO8859-2     0       0
>>>/dev/ad0s6      /usr/home/mato/mnt/win  ntfs    ro,noauto       0       0
>>>/dev/ad0s7      /usr/home/mato/mnt/lin  ext2fs  ro,noauto       0       0
>>>[mb-aw1n-bsd][mato][~]
>>>$ ll /dev/ad0*
>>>crw-rw----  1 root  operator    0,  96 Feb  8 22:50 /dev/ad0
>>>crw-rw----  1 root  operator    0,  97 Feb  8 22:50 /dev/ad0s1
>>>crw-rw----  1 root  operator    0,  98 Feb  8 22:50 /dev/ad0s2
>>>crw-rw----  1 root  operator    0,  99 Feb  8 22:50 /dev/ad0s3
>>>crw-rw----  1 root  operator    0, 101 Feb  8 23:50 /dev/ad0s3a
>>>crw-rw----  1 root  operator    0, 102 Feb  8 23:50 /dev/ad0s3b
>>>crw-rw----  1 root  operator    0, 103 Feb  8 22:50 /dev/ad0s3c
>>>crw-rw----  1 root  operator    0, 104 Feb  8 23:50 /dev/ad0s3d
>>>crw-rw----  1 root  operator    0, 105 Feb  8 23:50 /dev/ad0s3e
>>>crw-rw----  1 root  operator    0, 106 Feb  8 23:50 /dev/ad0s3f
>>>crw-rw----  1 root  operator    0, 100 Feb  8 22:50 /dev/ad0s4
>>>crw-rw----  1 root  operator    0, 107 Feb  8 22:50 /dev/ad0s5
>>>crw-rw----  1 root  operator    0, 108 Feb  8 22:50 /dev/ad0s6
>>>crw-rw----  1 root  operator    0, 109 Feb  8 22:50 /dev/ad0s7
>>>crw-rw----  1 root  operator    0, 110 Feb  8 22:50 /dev/ad0s8
>>>[mb-aw1n-bsd][mato][~]
>>>$ mount /usr/home/mato/mnt/win/
>>>mount_ntfs: /dev/ad0s6: Operation not permitted
>>>[mb-aw1n-bsd][mato][~]
>>>$ mount /usr/home/mato/mnt/lin/
>>>mount_ext2fs: /dev/ad0s7: Operation not permitted
>>>[mb-aw1n-bsd][mato][~]
>>>$ mount /usr/home/mato/mnt/fat/
>>>mount_msdosfs: cannot find or load "msdosfs_iconv" kernel module
>>>mount_msdosfs: msdosfs_iconv: Operation not permitted
>>>[mb-aw1n-bsd][mato][~]
>>>$ mount /usr/home/mato/mnt/dos/
>>>[mb-aw1n-bsd][mato][~]
>>>$
>>>
>>>
>>>as you can see, the results are the same as before -- only the last
>>>mount point got mounted. (why?)
>>>permissions were set via /etc/devfs.conf and system rebooted:
>>>perm    ad0*    0660
>>>
>>>any hint or idea what might be wrong pls ??
>>>
>>>   
>>>
>>
>>My guess is that you haven't added support for those other
>>filesystems in your kernel and it's trying to kldload those
>>modules but fails because you are not root.
>>
>>
>>
>>
>>
>> 
>>
> 
> 
> yeah, that sounds very reasonable (even though i would expect something
> like that to happen somehow automagically) ... anyway, i'll have a look
> at it tmrw or so.. thanks!
> 
> m.


confirmed. almost. all but one mounted. please see below and comment ...

/everything setup as before/above/

[mb-aw1n-bsd][mato][~]
$ mount /usr/home/mato/mnt/win/
[mb-aw1n-bsd][mato][~]
$ mount /usr/home/mato/mnt/lin/
[mb-aw1n-bsd][mato][~]
$ mount /usr/home/mato/mnt/fat/
mount_msdosfs: msdosfs_iconv: Operation not permitted
[mb-aw1n-bsd][mato][~]
$ mount /usr/home/mato/mnt/dos/
[mb-aw1n-bsd][mato][~]
$ kldstat
Id Refs Address    Size     Name
 1   30 0xc0400000 459d90   kernel
 3    1 0xc085c000 56c8     vesa.ko
 4    1 0xc0862000 cbe4     ntfs.ko
...
13    1 0xc0943000 4ec8     atapicam.ko
14    1 0xc0948000 1e78     msdosfs_iconv.ko
15    2 0xc094a000 49f4     libiconv.ko
16    1 0xc094f000 103f4    ext2fs.ko
[mb-aw1n-bsd][mato][~]
$

all necessary modules seem to be loaded so why is it still failing ??

martin




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