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![Mike Fleetwood](/assets/img/avatar_default.png)
The gparted shell wrapper masks Systemd mount units to prevent it automounting file systems while GParted is running [1], excluding virtual file system which GParted isn't interested in [2]. The problem is that there are a lot of virtual file systems and they have changed between Fedora 19 and 33 so now the exclusion list is out of date. Run GParted on Fedora 33 and query the mount units while it is running: $ systemctl list-units -t mount --full --all UNIT LOAD ACTIVE SUB DESCRIPTION -.mount loaded active mounted Root Mount * boot.mount masked active mounted /boot dev-hugepages.mount loaded active mounted Huge Pages File System dev-mqueue.mount loaded active mounted POSIX Message Queue File System * home.mount masked active mounted /home * proc-fs-nfsd.mount masked inactive dead proc-fs-nfsd.mount proc-sys-fs-binfmt_misc.mount loaded inactive dead Arbitrary Executable File Formats File System run-user-1000-gvfs.mount loaded active mounted /run/user/1000/gvfs * run-user-1000.mount masked active mounted /run/user/1000 * run-user-42.mount masked active mounted /run/user/42 sys-fs-fuse-connections.mount loaded active mounted FUSE Control File System sys-kernel-config.mount loaded active mounted Kernel Configuration File System sys-kernel-debug.mount loaded active mounted Kernel Debug File System * sys-kernel-tracing.mount masked active mounted /sys/kernel/tracing * sysroot.mount masked inactive dead sysroot.mount * tmp.mount masked active mounted /tmp * var-lib-machines.mount masked inactive dead var-lib-machines.mount * var-lib-nfs-rpc_pipefs.mount masked active mounted /var/lib/nfs/rpc_pipefs * var.mount masked inactive dead var.mount LOAD = Reflects whether the unit definition was properly loaded. ACTIVE = The high-level unit activation state, i.e. generalization of SUB. SUB = The low-level unit activation state, values depend on unit type. 19 loaded units listed. To show all installed unit files use 'systemctl list-unit-files'. So it masked these virtual file systems which didn't need to be masked: * proc-fs-nfsd.mount masked inactive dead proc-fs-nfsd.mount * run-user-1000.mount masked active mounted /run/user/1000 * run-user-42.mount masked active mounted /run/user/42 * sys-kernel-tracing.mount masked active mounted /sys/kernel/tracing * var-lib-machines.mount masked inactive dead var-lib-machines.mount * var-lib-nfs-rpc_pipefs.mount masked active mounted /var/lib/nfs/rpc_pipefs Lines from /proc/partitions for some of these virtual file systems: $ egrep '/run/user|/sys/kernel/tracing|/var/lib/nfs/rpc_pipefs' /proc/mounts tmpfs /run/user/42 tmpfs rw,seclabel,nosuid,nodev,relatime,size=202656k,nr_inodes=50664,mode=700,uid=42,gid=42,inode64 0 0 tmpfs /run/user/1000 tmpfs rw,seclabel,nosuid,nodev,relatime,size=202656k,nr_inodes=50664,mode=700,uid=1000,gid=1000,inode64 0 0 none /sys/kernel/tracing tracefs rw,seclabel,relatime 0 0 sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw,relatime 0 0 gvfsd-fuse /run/user/1000/gvfs fuse.gvfsd-fuse rw,nosuid,nodev,relatime,user_id=1000,group_id=1000 0 0 And for contrast the lines from /proc/mounts for disk backed file systems: $ egrep '^/dev/' /proc/mounts /dev/sda1 /boot ext4 rw,seclabel,relatime 0 0 /dev/sda2 / btrfs rw,seclabel,relatime,space_cache,subvolid=258,subvol=/root 0 0 /dev/sda2 /home btrfs rw,seclabel,relatime,space_cache,subvolid=256,subvol=/home 0 0 Going back to first principles GParted cares that Systemd doesn't automount file systems on block devices. So instead only mask mount units which are on block devices. Where the 'What' property starts "/dev/". Systemd maintains hundreds of properties for each unit. $ systemctl show boot.mount | wc -l 221 The properties of interest for all mount units can be queries like this: $ systemctl show --all --property=What,Id,LoadState '*.mount' ... What=sunrpc Id=var-lib-nfs-rpc_pipefs.mount LoadState=masked What=/dev/sda1 Id=boot.mount LoadState=masked ... [1]4c109df9b5
Use systemctl runtime mask to prevent automounting (#701676) [2]43de8e326a
Do not mask virtual file systems when using systemctl (#708378) Closes #129 - Unit \xe2\x97\x8f.service does not exist, proceeding anyway
231 lines
6.8 KiB
Bash
Executable file
231 lines
6.8 KiB
Bash
Executable file
#!/bin/sh
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# Name: gparted
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# Purpose: Perform appropriate startup of GParted executable gpartedbin.
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#
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# The purpose of these startup methods is to prevent
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# devices from being automounted, and to ensure only one
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# instance of GParted is running. File system problems can
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# occur if devices are mounted prior to the completion of
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# GParted's operations, or if multiple partition editing
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# tools are in use concurrently.
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#
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# Copyright (C) 2008, 2009, 2010, 2013, 2015 Curtis Gedak
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#
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# This file is part of GParted.
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#
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# GParted is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# GParted is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with GParted. If not, see <http://www.gnu.org/licenses/>.
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#
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#
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# Only permit one instance of GParted to execute at a time
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#
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if pidof gpartedbin 1> /dev/null; then
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echo "The process gpartedbin is already running."
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echo "Only one gpartedbin process is permitted."
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exit 1
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fi
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#
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# Define base command for executing GParted
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#
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BASE_CMD="@sbindir@/gpartedbin $*"
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#
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# For non-root users try to get authorisation to run GParted as root.
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#
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if test "x`id -u`" != "x0"; then
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#
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# If there is no configured SU program run gpartedbin as
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# non-root to display the graphical error about needing root
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# privileges.
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#
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if test "x@gksuprog@" = "x"; then
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echo "Root privileges are required for running gparted."
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$BASE_CMD
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exit 1
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fi
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#
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# Interim workaround to allow GParted run by root access to the
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# X11 display server under Wayland. If configured with
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# './configure --enable-xhost-root', the xhost command is
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# available and root has not been granted access to the X11
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# display via xhost, then grant access.
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#
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ENABLE_XHOST_ROOT=@enable_xhost_root@
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GRANTED_XHOST_ROOT=no
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if test "x$ENABLE_XHOST_ROOT" = 'xyes' && xhost 1> /dev/null 2>&1; then
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if ! xhost | grep -qi 'SI:localuser:root$'; then
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xhost +SI:localuser:root
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GRANTED_XHOST_ROOT=yes
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fi
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fi
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#
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# Run gparted as root.
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#
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@gksuprog@ '@bindir@/gparted' "$@"
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status=$?
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#
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# Revoke root access to the X11 display, only if we granted it.
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#
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if test "x$GRANTED_XHOST_ROOT" = 'xyes'; then
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xhost -SI:localuser:root
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fi
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exit $status
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fi
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#
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# Search PATH to determine if systemctl program can be found
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# and if appropriate daemon is running.
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#
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HAVE_SYSTEMCTL=no
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for k in '' `echo "$PATH" | sed 's,:, ,g'`; do
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if test -x "$k/systemctl"; then
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if pidof systemd 1> /dev/null; then
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HAVE_SYSTEMCTL=yes
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break
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fi
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fi
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done
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#
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# Check if udisks2-inhibit exists in known location
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# and if appropriate daemon is running.
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#
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HAVE_UDISKS2_INHIBIT=no
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if test -x "/usr/lib/udisks2/udisks2-inhibit"; then
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if pidof udisksd 1> /dev/null; then
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HAVE_UDISKS2_INHIBIT=yes
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fi
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fi
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#
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# Search PATH to determine if udisks program can be found
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# and if appropriate daemon is running.
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#
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HAVE_UDISKS=no
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for k in '' `echo "$PATH" | sed 's,:, ,g'`; do
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if test -x "$k/udisks"; then
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if pidof udisks-daemon 1> /dev/null; then
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HAVE_UDISKS=yes
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break
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fi
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fi
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done
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#
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# Search PATH to determine if hal-lock program can be found
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# and if appropriate daemon is running.
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#
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HAVE_HAL_LOCK=no
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for k in '' `echo "$PATH" | sed 's,:, ,g'`; do
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if test -x "$k/hal-lock"; then
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if pidof hald 1> /dev/null; then
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HAVE_HAL_LOCK=yes
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break
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fi
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fi
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done
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#
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# Use systemctl to prevent automount by masking currently unmasked mount points
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#
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if test "x$HAVE_SYSTEMCTL" = "xyes"; then
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MOUNTLIST=`systemctl show --all --property=What,Id,LoadState '*.mount' | \
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awk '
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function clear_properties() {
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what = ""; id = ""; loadstate = ""
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}
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function process_unit() {
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if (substr(what,1,5) == "/dev/" && loadstate != "masked")
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print id
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clear_properties()
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}
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/^What=/ { what = substr($0,6) }
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/^Id=/ { id = substr($0,4) }
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/^LoadState=/ { loadstate = substr($0,11) }
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/^$/ { process_unit() }
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END { process_unit() }
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'`
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systemctl --runtime mask --quiet -- $MOUNTLIST
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fi
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#
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# Create temporary blank overrides for all udev rules which automatically
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# start Linux Software RAID array members.
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#
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# Udev stores volatile / temporary runtime rules in directory /run/udev/rules.d.
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# Older versions use /dev/.udev/rules.d instead, and even older versions don't
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# have such a directory at all. Volatile / temporary rules are use to override
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# default rules from /lib/udev/rules.d. (Permanent local administrative rules
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# in directory /etc/udev/rules.d override all others). See udev(7) manual page
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# from various versions of udev for details.
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#
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# Default udev rules containing mdadm to incrementally start array members are
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# found in 64-md-raid.rules and/or 65-md-incremental.rules, depending on the
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# distribution and age. The rules may be commented out or not exist at all.
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#
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UDEV_TEMP_MDADM_RULES='' # List of temporary override rules files.
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for udev_temp_d in /run/udev /dev/.udev; do
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if test -d "$udev_temp_d"; then
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test ! -d "$udev_temp_d/rules.d" && mkdir "$udev_temp_d/rules.d"
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udev_mdadm_rules=`egrep -l '^[^#].*mdadm (-I|--incremental)' /lib/udev/rules.d/*.rules 2> /dev/null`
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UDEV_TEMP_MDADM_RULES=`echo "$udev_mdadm_rules" | sed 's,^/lib/udev,'"$udev_temp_d"','`
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break
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fi
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done
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for rule in $UDEV_TEMP_MDADM_RULES; do
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touch "$rule"
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done
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#
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# Use udisks2-inhibit if udisks2-inhibit exists and deamon running.
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# Else use both udisks and hal-lock for invocation if both binaries exist and both
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# daemons are running.
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# Else use udisks if binary exists and daemon is running.
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# Otherwise use hal-lock for invocation if binary exists and daemon is running.
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# If the above checks fail then simply run gpartedbin.
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#
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if test "x$HAVE_UDISKS2_INHIBIT" = "xyes"; then
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/usr/lib/udisks2/udisks2-inhibit $BASE_CMD
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elif test "x$HAVE_UDISKS" = "xyes" && test "x$HAVE_HAL_LOCK" = "xyes"; then
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udisks --inhibit -- \
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hal-lock --interface org.freedesktop.Hal.Device.Storage --exclusive \
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--run "$BASE_CMD"
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elif test "x$HAVE_UDISKS" = "xyes"; then
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udisks --inhibit -- $BASE_CMD
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elif test "x$HAVE_HAL_LOCK" = "xyes"; then
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hal-lock --interface org.freedesktop.Hal.Device.Storage --exclusive \
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--run "$BASE_CMD"
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else
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$BASE_CMD
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fi
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#
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# Clear any temporary override udev rules used to stop udev automatically
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# starting Linux Software RAID array members.
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#
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for rule in $UDEV_TEMP_MDADM_RULES; do
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rm -f "$rule"
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done
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#
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# Use systemctl to restore that status of any mount points changed above
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#
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if test "x$HAVE_SYSTEMCTL" = "xyes"; then
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systemctl --runtime unmask --quiet -- $MOUNTLIST
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fi
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