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Thread: Motion daemon write permission

  1. #1
    Join Date
    Oct 2007
    Beans
    4

    Motion daemon write permission

    I'm running Ubuntu 10.04 with Motion 3.2.12

    When I start motion from the command line using
    sudo motion
    All is good
    [0] Processing thread 0 - config file /usr/local/etc/motion.conf
    [0] Motion 3.2.12 Started
    [0] Motion going to daemon mode

    When I auto start motion at startup and do
    tail -f /var/log/syslog
    I can see the error message
    motion: [1] ffopen_open error creating (new) file [/media/d9a465a2-df61-429d-9494-f76a12aa69f4/motion/01-20120701162955]:

    If I change the drive motion is writing to, to /tmp it works

    I've tried setting drive owner/group permissions
    ls /media/d9a465a2-df61-429d-9494-f76a12aa69f4/motion -al
    total 361557960
    drwxrwxrwx 3 root root 499712 2012-07-01 16:32 .
    drwxrwxrwx 13 motion motion 4096 2012-06-29 07:36 ..

    I think the mount command is correct

    /dev/sdc1 on /media/d9a465a2-df61-429d-9494-f76a12aa69f4 type ext4 (rw,noexec,nosuid,nodev)


    What am I missing, does the daemon have different permissions when its autostarted vs using sudo motion?

    Thanks

  2. #2
    Join Date
    May 2010
    Location
    Tewkesbury uk
    Beans
    7,510
    Distro
    Ubuntu Development Release

    Re: Motion daemon write permission

    Hi

    When I auto start motion at startup and do...
    How are you auto starting it ?

    Writing to /media requires evelated privileges.

    Running the command using sudo will give it elevated privileges.

    Writing to /tmp will work as that directory has world write privilages.

    Code:
    [matthew@matthew-aspire7450 ~]$ ls -ld /tmp
    drwxrwxrwt. 25 root root 4096 Jul  2 00:47 /tmp
    [matthew@matthew-aspire7450 ~]$
    Can you post the output of

    Code:
    ls -ld /media/d9a465a2-df61-429d-9494-f76a12aa69f4/motion
    Note the -d switch.

    Is there any reason such a crazy name is being used for the mount point ?

    Kind regards
    Join us on irc at #ubuntuforums. For web chat see here

    If you believe everything you read, you better not read. ~ Japanese Proverb

    Do not read newspapers on an empty stomach ~ Russian Proverb ~ BrunoLotse

  3. #3
    Join Date
    Oct 2007
    Beans
    4

    Re: Motion daemon write permission

    I think it is being auto started from

    -rwxrwxrwx 1 root root 2357 2012-06-19 23:05 /etc/init.d/motion

    ls -ld /media/d9a465a2-df61-429d-9494-f76a12aa69f4/motion

    drwxrwxrwx 3 root root 499712 2012-07-01 16:32 /media/d9a465a2-df61-429d-9494-f76a12aa69f4/motion

    Crazy name, never got around to changing it
    Thanks

  4. #4
    Join Date
    Oct 2007
    Beans
    4

    Re: Motion daemon write permission

    Quick update, so I tried this

    sudo chown motion:motion /media/d9a465a2-df61-429d-9494-f76a12aa69f4/motion

    ls -ld /media/d9a465a2-df61-429d-9494-f76a12aa69f4/motion

    drwxrwxrwx 3 motion motion 499712 2012-07-01 16:32 /media/d9a465a2-df61-429d-9494-f76a12aa69f4/motion

    but I'm still getting
    motion: [1] ffopen_open error creating (new) file [/media/d9a465a2-df61-429d-9494-f76a12aa69f4/motion/01-20120701173205]:

    When motion is autostarted
    ps -ef |grep motion
    motion 1389 1 4 17:28 ? 00:00:05 /usr/bin/motion

  5. #5
    Join Date
    May 2010
    Location
    Tewkesbury uk
    Beans
    7,510
    Distro
    Ubuntu Development Release

    Re: Motion daemon write permission

    Hi

    I think it is being auto started from

    -rwxrwxrwx 1 root root 2357 2012-06-19 23:05 /etc/init.d/motion
    If you starting it from here then it should be started as root.
    ls -ld /media/d9a465a2-df61-429d-9494-f76a12aa69f4/motion

    drwxrwxrwx 3 root root 499712 2012-07-01 16:32 /media/d9a465a2-df61-429d-9494-f76a12aa69f4/motion
    This should also be world writeable.

    Can we test some thing. After it has booted up and when motion is not running, open a terminal and type

    Code:
    sudo /etc/init.d/motion start
    Does it start ?

    If it does then stop it with

    Code:
    sudo /etc/init.d/motion stop
    Then type

    Code:
    sudo service motion start
    Does that start motion ?

    If it does then type

    Code:
    sudo service motion stop
    Post back resullts.

    Kind regards
    Join us on irc at #ubuntuforums. For web chat see here

    If you believe everything you read, you better not read. ~ Japanese Proverb

    Do not read newspapers on an empty stomach ~ Russian Proverb ~ BrunoLotse

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