problems mounting camera to download pics ....

[William A. Mahaffey III]

On 02/26/15 14:51, Andrew Gould wrote:
> On Thu, Feb 26, 2015 at 2:23 PM, William A. Mahaffey III 
> <wam at hiwaay.net <mailto:wam at hiwaay.net>> wrote:
>
>     On 02/26/15 12:09, Polytropon wrote:
>
>         On Thu, 26 Feb 2015 12:04:15 -0600, William A. Mahaffey III wrote:
>
>             On 02/26/15 11:39, Polytropon wrote:
>
>                 On Thu, 26 Feb 2015 11:38:48 -0600, William A.
>                 Mahaffey III wrote:
>
>                     .... I am trying to mount my digital camera to
>                     download some pics I just
>                     took. When I do this as root, it works AOK & I got
>                     the pics off.
>                     However, when I changed my fstab file to
>                     (supposedly) allow regular
>                     users to mount that directory, the mount command
>                     fails:
>
>
>                     [wam at kabini1, ~, 11:33:11am] 530 % mount /media/flash/
>                     mount_msdosfs: /dev/da0s1: Operation not permitted
>                     [wam at kabini1, ~, 11:35:58am] 530 %
>
>                 And with "sudo" prefix? :-)
>
>             [wam at kabini1, ~, 11:58:22am] 568 % mount /media/flash/
>             mount_msdosfs: /dev/da0s1: Operation not permitted
>             [wam at kabini1, ~, 11:58:25am] 569 % sudo mount /media/flash/
>             mount_msdosfs: /dev/da0s1: mount option <users> is
>             unknown: Invalid argument
>             [wam at kabini1, ~, 11:58:27am] 570 %
>
>         I didn't find the "users" option in "man mount" or "man
>         mount_msdosfs",
>         what is it supposed to do? What if you temporarily remove it?
>
>
>     A linuxism :-/ .... makes no difference either way, other than the
>     parsing error .... It's supposed to allow regular users to mount
>     that resource ....
>
>
>
>                     relevant lines from my fstab file:
>
>
>                     /dev/da0s1      /media/flash            msdosfs
>                     rw,sync,noauto,longnames,-Lru_RU.UTF-8,users    0
>                          0
>
>                 Suggestion regarding msdosfs: add "-m=644,-M=755" to the
>                 options to get rid of the fake +x attributes for the
>                 files.
>                 You could also add "noatime".
>
>             Roger, wilco ....
>
>         Not essential to solve the problem, but might be helpful for
>         further usage.
>
>
>
>                     Not a huge issue, since I can get 'er done as
>                     root, but I don't see why
>                     this shouldn't be feasible as a regular user ....
>                     TIA & have a nice,
>                     snowy (here) day ;-) ....
>
>                 Do you have the mandatory "vfs.usermount=1" in
>                 /etc/sysctl.conf?
>                 Also check the device permissions: User or group
>                 requires rw for
>                 the device and must own the mountpoint.
>
>             .... & remember to change it in the command line as well,
>             done, still
>             the same problem .... my root dir:
>
>
>             [wam at kabini1, ~, 12:01:36pm] 570 % ll /
>             total 32890
>             [...]
>             drwxr-xr-x   5 root  wheel          512 Oct 26 08:01 media/
>             [...]
>             So am I supposed to have /media group writable ? I did so
>             & same issue ....
>
>         I think so. You can test this by temporarily chown'ing the
>         whole /media subtree to your user, and then run the command
>         as user (given that vfs.usermount is already set).
>
>         You can find more info here (regarding user mount):
>
>         https://www.freebsd.org/doc/handbook/usb-disks.html
>
>
>     Hmmmm .... this looks rather involved, I think I'll punt. I can
>     get stuff mounted by root, & I usually have a root window open, so
>     I'm OK as is. Thanks :-) ....
>
>     -- 
>
>             William A. Mahaffey III
>
>      ----------------------------------------------------------------------
>
>
> If you set the suid on mount and umount, users should be able to mount 
> and unmount devices.
>
>      chmod u+s /sbin/*mount
>
>
> Andrew

OK, I'll try that & see, thanks :-) ....

-- 

	William A. Mahaffey III

  ----------------------------------------------------------------------

	"The M1 Garand is without doubt the finest implement of war
	 ever devised by man."
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