Bug#750499: gvfs mounts the fat32 sd card of my 3g dongle with root ownership

Tue Jun 3 21:39:22 UTC 2014

Source: gvfs
Severity: important

Dear Maintainer,

Today, I wanted to copy my statistics course to the micro sd card I use for my e-reader. I do this using my 3G dongle.

The first problem I encountered that the partitions weren't automatically discovered. It was when the dongle was inserted during boot, or when I did a touch /dev/sdb

Well, I could mount the FAT32 file system now, but the ownership was set to root. I have tested it with an other FAT32 file system using a spare USB stick, but this functioned well.

This is the output of gvfs-mount -io after inserting the dongle:
Drive connected:    'HUAWEI MMC Storage'
  Drive(0): HUAWEI MMC Storage
    Type: GProxyDrive (GProxyVolumeMonitorUDisks2)
    ids:
     unix-device: '/dev/sdb'
    themed icons:  [drive-removable-media-usb]  [drive-removable-media]  [drive-removable]  [drive]
    symbolic themed icons:  [drive-removable-media-usb-symbolic]  [drive-removable-media-symbolic]  [drive-removable-symbolic]  [drive-symbolic]  [drive-removable-media-usb]  [drive-removable-media]  [drive-removable]  [drive]
    is_media_removable=1
    has_media=0
    is_media_check_automatic=1
    can_poll_for_media=0
    can_eject=1
    can_start=0
    can_stop=0
    start_stop_type=shutdown
    sort_key=01hotplug/1401829923277712

Drive connected:    'HUAWEI Mass Storage'
  Drive(0): HUAWEI Mass Storage
    Type: GProxyDrive (GProxyVolumeMonitorUDisks2)
    ids:
     unix-device: '/dev/sr0'
    themed icons:  [drive-optical]  [drive]
    symbolic themed icons:  [drive-optical-symbolic]  [drive-symbolic]  [drive-optical]  [drive]
    is_media_removable=1
    has_media=0
    is_media_check_automatic=1
    can_poll_for_media=0
    can_eject=1
    can_start=0
    can_stop=0
    start_stop_type=shutdown
    sort_key=01hotplug/1401829923303482

After I do the touch /dev/sdb:
Drive changed:      'HUAWEI MMC Storage'
  Drive(0): HUAWEI MMC Storage
    Type: GProxyDrive (GProxyVolumeMonitorUDisks2)
    ids:
     unix-device: '/dev/sdb'
    themed icons:  [drive-removable-media-usb]  [drive-removable-media]  [drive-removable]  [drive]
    symbolic themed icons:  [drive-removable-media-usb-symbolic]  [drive-removable-media-symbolic]  [drive-removable-symbolic]  [drive-symbolic]  [drive-removable-media-usb]  [drive-removable-media]  [drive-removable]  [drive]
    is_media_removable=1
    has_media=1
    is_media_check_automatic=1
    can_poll_for_media=0
    can_eject=1
    can_start=0
    can_stop=0
    start_stop_type=shutdown
    sort_key=01hotplug/1401829923277712

Volume added:       'usb0'
  Volume(0): usb0
    Type: GProxyVolume (GProxyVolumeMonitorUDisks2)
    ids:
     class: 'device'
    themed icons:  [drive-removable-media]  [drive-removable]  [drive]
    symbolic themed icons:  [drive-removable-media-symbolic]  [drive-removable-symbolic]  [drive-symbolic]  [drive-removable-media]  [drive-removable]  [drive]
    can_mount=1
    can_eject=0
    should_automount=0
    sort_key=gvfs.time_detected_usec.1401830431454306

Drive changed:      'HUAWEI MMC Storage'
  Drive(0): HUAWEI MMC Storage
    Type: GProxyDrive (GProxyVolumeMonitorUDisks2)
    ids:
     unix-device: '/dev/sdb'
    themed icons:  [drive-removable-media-usb]  [drive-removable-media]  [drive-removable]  [drive]
    symbolic themed icons:  [drive-removable-media-usb-symbolic]  [drive-removable-media-symbolic]  [drive-removable-symbolic]  [drive-symbolic]  [drive-removable-media-usb]  [drive-removable-media]  [drive-removable]  [drive]
    is_media_removable=1
    has_media=1
    is_media_check_automatic=1
    can_poll_for_media=0
    can_eject=1
    can_start=0
    can_stop=0
    start_stop_type=shutdown
    sort_key=01hotplug/1401829923277712

Volume removed:     'usb0'
  Volume(0): usb0
    Type: GProxyVolume (GProxyVolumeMonitorUDisks2)
    ids:
     class: 'device'
    themed icons:  [drive-removable-media]  [drive-removable]  [drive]
    symbolic themed icons:  [drive-removable-media-symbolic]  [drive-removable-symbolic]  [drive-symbolic]  [drive-removable-media]  [drive-removable]  [drive]
    can_mount=1
    can_eject=0
    should_automount=0
    sort_key=gvfs.time_detected_usec.1401830431454306

Volume added:       '3.9 GB Volume'
  Volume(0): 3.9 GB Volume
    Type: GProxyVolume (GProxyVolumeMonitorUDisks2)
    ids:
     class: 'device'
     unix-device: '/dev/sdb1'
     uuid: '205A-CB39'
    themed icons:  [drive-removable-media-usb]  [drive-removable-media]  [drive-removable]  [drive]
    symbolic themed icons:  [drive-removable-media-usb-symbolic]  [drive-removable-media-symbolic]  [drive-removable-symbolic]  [drive-symbolic]  [drive-removable-media-usb]  [drive-removable-media]  [drive-removable]  [drive]
    can_mount=1
    can_eject=1
    should_automount=1
    sort_key=gvfs.time_detected_usec.1401830432141025

$ gvfs-mount -d /dev/sdb1
Mounted /dev/sdb1 at /media/usb0

Note the fact that the disk is mounted directly at /media, and not /media/kevin. The output of gvfs-mount -io:
Volume changed:     '3.9 GB Volume'
  Volume(0): 3.9 GB Volume
    Type: GProxyVolume (GProxyVolumeMonitorUDisks2)
    ids:
     class: 'device'
     unix-device: '/dev/sdb1'
     uuid: '205A-CB39'
    themed icons:  [drive-removable-media-usb]  [drive-removable-media]  [drive-removable]  [drive]
    symbolic themed icons:  [drive-removable-media-usb-symbolic]  [drive-removable-media-symbolic]  [drive-removable-symbolic]  [drive-symbolic]  [drive-removable-media-usb]  [drive-removable-media]  [drive-removable]  [drive]
    can_mount=1
    can_eject=1
    should_automount=1
    sort_key=gvfs.time_detected_usec.1401830611697541

Mount added: '3.9 GB Volume'
  Mount(0): 3.9 GB Volume -> file:///media/usb0
    Type: GProxyMount (GProxyVolumeMonitorUDisks2)
    default_location=file:///media/usb0
    themed icons:  [drive-removable-media-usb]  [drive-removable-media]  [drive-removable]  [drive]
    symbolic themed icons:  [drive-removable-media-usb-symbolic]  [drive-removable-media-symbolic]  [drive-removable-symbolic]  [drive-symbolic]  [drive-removable-media-usb]  [drive-removable-media]  [drive-removable]  [drive]
    can_unmount=1
    can_eject=1
    is_shadowed=0
    sort_key=gvfs.time_detected_usec.1401830646392683

Relevant output of mount:
/dev/sdb1 on /media/usb0 type vfat (rw,nosuid,nodev,noexec,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=utf8,shortname=mixed,errors=remount-ro)

dmesg output:
[ 5688.607615] usb 1-5: new high-speed USB device number 16 using xhci_hcd
[ 5688.802774] usb 1-5: New USB device found, idVendor=12d1, idProduct=1003
[ 5688.802784] usb 1-5: New USB device strings: Mfr=2, Product=1, SerialNumber=0
[ 5688.802788] usb 1-5: Product: HUAWEI Mobile
[ 5688.802792] usb 1-5: Manufacturer: HUAWEI Technology
[ 5688.804090] usb-storage 1-5:1.0: USB Mass Storage device detected
[ 5688.804931] scsi29 : usb-storage 1-5:1.0
[ 5688.805800] usb 1-5: USB disconnect, device number 16
[ 5695.358438] usb 1-5: new high-speed USB device number 17 using xhci_hcd
[ 5695.553587] usb 1-5: New USB device found, idVendor=12d1, idProduct=1003
[ 5695.553595] usb 1-5: New USB device strings: Mfr=2, Product=1, SerialNumber=0
[ 5695.553599] usb 1-5: Product: HUAWEI Mobile
[ 5695.553602] usb 1-5: Manufacturer: HUAWEI Technology
[ 5695.555301] usb-storage 1-5:1.0: USB Mass Storage device detected
[ 5695.555495] option 1-5:1.0: GSM modem (1-port) converter detected
[ 5695.555666] usb 1-5: GSM modem (1-port) converter now attached to ttyUSB0
[ 5695.555801] usb-storage 1-5:1.1: USB Mass Storage device detected
[ 5695.555982] option 1-5:1.1: GSM modem (1-port) converter detected
[ 5695.556107] usb 1-5: GSM modem (1-port) converter now attached to ttyUSB1
[ 5695.556211] usb-storage 1-5:1.2: USB Mass Storage device detected
[ 5695.556617] scsi32 : usb-storage 1-5:1.2
[ 5695.556808] usb-storage 1-5:1.3: USB Mass Storage device detected
[ 5695.557609] scsi33 : usb-storage 1-5:1.3
[ 5696.557506] scsi 32:0:0:0: CD-ROM            HUAWEI   Mass Storage     2.31 PQ: 0 ANSI: 2
[ 5696.559513] scsi 33:0:0:0: Direct-Access     HUAWEI   MMC Storage      2.31 PQ: 0 ANSI: 2
[ 5696.569016] sr0: scsi-1 drive
[ 5696.569390] sr 32:0:0:0: Attached scsi CD-ROM sr0
[ 5696.570408] sr 32:0:0:0: Attached scsi generic sg1 type 5
[ 5696.570736] sd 33:0:0:0: Attached scsi generic sg2 type 0
[ 5696.579617] sd 33:0:0:0: [sdb] Attached SCSI removable disk
[ 5696.611396] xhci_hcd 0000:00:14.0: WARN Event TRB for slot 16 ep 8 with no TDs queued?
[ 5708.807901] sd 33:0:0:0: [sdb] 7710720 512-byte logical blocks: (3.94 GB/3.67 GiB)
[ 5708.814010] sd 33:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 5708.830600]  sdb: sdb1
[ 5710.388431] FAT-fs (sdb1): utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
[ 5710.407030] FAT-fs (sdb1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.

-- System Information:
Debian Release: jessie/sid
  APT prefers testing-updates
  APT policy: (500, 'testing-updates'), (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 3.14-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

-- no debconf information