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PHP 8.1.31
Preview: usr.lib.snapd.snap-confine.real Size: 28.76 KB
//etc/apparmor.d/usr.lib.snapd.snap-confine.real
# Author: Jamie Strandboge <jamie@canonical.com>
#include <tunables/global>

/usr/lib/snapd/snap-confine (attach_disconnected) {
    # Include any additional files that snapd chose to generate.
    # - for $HOME on remote file system.
    # - for $HOME on encrypted media
    #
    # Those are discussed on https://forum.snapcraft.io/t/snapd-vs-upstream-kernel-vs-apparmor
    # and https://forum.snapcraft.io/t/snaps-and-nfs-home/
    #include "/var/lib/snapd/apparmor/snap-confine"

    # We run privileged, so be fanatical about what we include and don't use
    # any abstractions
    /etc/ld.so.cache r,
    /etc/ld.so.preload r,

    # Do not assume that the interpreter is always named like
    # ld-linux-x86_64.so, as on some architectures there can be a version after
    # the .so suffix, eg. ld-linux-aarch64.so.1
    /{,usr/}lib{,32,64,x32}/{,@{multiarch}/{,atomics/}}ld{-*,64}.so* mrix,
    # libc, you are funny
    /{,usr/}lib{,32,64,x32}/{,@{multiarch}/{,atomics/}}libc{,-[0-9]*}.so* mr,
    /{,usr/}lib{,32,64,x32}/{,@{multiarch}/{,atomics/}}libpthread{,-[0-9]*}.so* mr,
    /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libreadline{,-[0-9]*}.so* mr,
    /{,usr/}lib{,32,64,x32}/{,@{multiarch}/{,atomics/}}librt{,-[0-9]*}.so* mr,
    /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libgcc_s.so* mr,
    /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libncursesw{,-[0-9]*}.so* mr,
    /{,usr/}lib{,32,64,x32}/{,@{multiarch}/{,atomics/}}libresolv{,-[0-9]*}.so* mr,
    /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libselinux.so* mr,
    /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libpcre{,2}{,-[0-9]*}.so* mr,
    /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libmount.so* mr,
    /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libblkid.so* mr,
    /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libuuid.so* mr,
    # normal libs in order
    /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libapparmor.so* mr,
    /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libcgmanager.so* mr,
    /{,usr/}lib{,32,64,x32}/{,@{multiarch}/{,atomics/}}libdl{,-[0-9]*}.so* mr,
    /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libnih.so* mr,
    /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libnih-dbus.so* mr,
    /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libdbus-1.so* mr,
    /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libudev.so* mr,
    /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libseccomp.so* mr,
    /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libcap.so* mr,

    /usr/lib/snapd/snap-confine mr,

    # This rule is needed when executing from a "base: core" devmode snap on 
    # UC18 and newer where the /usr/lib/snapd/snap-confine inside the 
    # "base: core" mount namespace always comes from the snapd snap, and thus
    # we will execute snap-confine via this path, and thus need to be able to
    # read this path when executing. It's also necessary on classic where both
    # the snapd and the core snap are installed at the same time.
    # TODO: remove this rule when we stop supporting executing other snaps from
    # inside devmode snaps, ideally even in the short term we would only include
    # this rule on core only, and specifically uc18 and newer where we need it
    #@VERBATIM_LIBEXECDIR_SNAP_CONFINE@ mr,

    /dev/null rw,
    /dev/full rw,
    /dev/zero rw,
    /dev/random r,
    /dev/urandom r,
    /dev/pts/[0-9]* rw,
    /dev/tty rw,

    # cgroup: devices
    capability sys_admin,
    capability dac_read_search,
    capability dac_override,
    /sys/fs/cgroup/ r,
    /sys/fs/cgroup/devices/ r,
    /sys/fs/cgroup/devices/snap.*/ rw,
    /sys/fs/cgroup/devices/snap.*/cgroup.procs w,
    /sys/fs/cgroup/devices/snap.*/devices.{allow,deny} w,

    # cgroup: freezer
    # Allow creating per-snap cgroup freezers and adding snap command (task)
    # invocations to the freezer. This allows for reliably enumerating all
    # running processes for the snap. In addition, allow enumerating processes
    # in the cgroup to determine if it is occupied.
    /sys/fs/cgroup/freezer/ r,
    /sys/fs/cgroup/freezer/snap.*/ w,
    /sys/fs/cgroup/freezer/snap.*/cgroup.procs rw,
    /sys/fs/cgroup/ r,
    /sys/fs/cgroup/** r,

    # cgroup: reading own cgroup
    @{PROC}/@{pid}/cgroup r,

    # cgroup: manage bpf map for device cgroup
    /sys/fs/bpf/ r,
    /sys/fs/bpf/snap/ rw,
    /sys/fs/bpf/snap/* rw,
    # s-c may need to raise the memlock limit
    capability sys_resource,

    # querying udev
    /etc/udev/udev.conf r,
    /sys/**/uevent r,
    /run/udev/** rw,
    /{,usr/}bin/tr ixr,
    /usr/lib/locale/** r,
    /usr/lib/@{multiarch}/gconv/gconv-modules r,
    /usr/lib/@{multiarch}/gconv/gconv-modules.cache r,

    # priv dropping
    capability setuid,
    capability setgid,

    # changing profile
    @{PROC}/[0-9]*/attr/{,apparmor/}exec w,
    # Reading current profile
    @{PROC}/[0-9]*/attr/{,apparmor/}current r,
    # Reading available filesystems
    @{PROC}/filesystems r,

    # To find where apparmor is mounted
    @{PROC}/[0-9]*/mounts r,
    # To find if apparmor is enabled
    /sys/module/apparmor/parameters/enabled r,

    # For detecting if we're in a container
    /run/systemd/container r,

    # Don't allow changing profile to unconfined or profiles that start with
    # '/'. Use 'unsafe' to support snap-exec on armhf and its reliance on
    # the environment for determining the capabilities of the architecture.
    # 'unsafe' is ok here because the kernel will have already cleared the
    # environment as part of launching snap-confine with CAP_SYS_ADMIN. This
    # does leave directories as configured by ld.so.preload as well as
    # LD_PRELOAD to be set to a library which is in a directory configured by
    # ld.so.conf, but access to those locations is mediated by this profile
    # (which requires rules for specific locations).
    change_profile unsafe /** -> [^u/]**,
    change_profile unsafe /** -> u[^n]**,
    change_profile unsafe /** -> un[^c]**,
    change_profile unsafe /** -> unc[^o]**,
    change_profile unsafe /** -> unco[^n]**,
    change_profile unsafe /** -> uncon[^f]**,
    change_profile unsafe /** -> unconf[^i]**,
    change_profile unsafe /** -> unconfi[^n]**,
    change_profile unsafe /** -> unconfin[^e]**,
    change_profile unsafe /** -> unconfine[^d]**,
    change_profile unsafe /** -> unconfined?**,

    # allow changing to a few not caught above
    change_profile unsafe /** -> {u,un,unc,unco,uncon,unconf,unconfi,unconfin,unconfine},

    # LP: #1446794 - when this bug is fixed, change the above to:
    # deny change_profile unsafe /** -> {unconfined,/**},
    # change_profile unsafe /** -> **,

    # reading seccomp filters.
    # Note 1: We still need to consider .bin extension because of global.bin file.
    # Note 2: This rule is not needed because of rule '/var/lib/** rw', however we keep it because at
    # some point we want to investigate if we can narrow the scope of the aforementioned rule.
    /{tmp/snap.rootfs_*/,}var/lib/snapd/seccomp/bpf/*.bin{,2} r,

    # adding a missing bpf mount
    mount fstype=bpf options=(rw) bpf -> /sys/fs/bpf/,

    # For mounting base dir by dir (write dirs and mount on them)
    /tmp/snap.rootfs_** rw,
    mount options=(remount ro) -> /tmp/snap.rootfs_*/,
    mount options=(rw rbind) /snap/*/*/**/ -> /tmp/snap.rootfs_**/,
    # For mounting individual files
    mount options=(rw bind) /snap/*/*/** -> /tmp/snap.rootfs_*/**,
    mount options=(rw rslave) -> /tmp/snap.rootfs_**/,
    # Allow mounting dirs from /
    mount options=(rw rbind) /*/ -> /tmp/snap.rootfs_**/,

    # LP: #1668659 and parallel instaces of classic snaps
    mount options=(rw rbind) /snap/ -> /snap/,
    mount options=(rw rshared) -> /snap/,
    mount options=(rw rbind) /var/lib/snapd/snap/ -> /var/lib/snapd/snap/,
    mount options=(rw rshared) -> /var/lib/snapd/snap/,

    # boostrapping the mount namespace
    /tmp/snap.rootfs_*/ rw,
    mount fstype=tmpfs none -> /tmp/snap.rootfs_*/,
    mount options=(rw rshared) -> /,
    mount options=(rw bind) /tmp/snap.rootfs_*/ -> /tmp/snap.rootfs_*/,
    mount options=(rw unbindable) -> /tmp/snap.rootfs_*/,
    # the next line is for classic system
    mount options=(rw rbind) /snap/*/*/ -> /tmp/snap.rootfs_*/,
    # the next line is for core system
    mount options=(rw rbind) / -> /tmp/snap.rootfs_*/,
    # all of the constructed rootfs is a rslave
    mount options=(rw rslave) -> /tmp/snap.rootfs_*/,
    # bidirectional mounts (for both classic and core)
    # NOTE: this doesn't capture the MERGED_USR configuration option so that
    # when a distro with merged /usr and / that uses apparmor shows up it
    # should be handled here.
    /{,run/}media/ w,
    mount options=(rw rbind) /{,run/}media/ -> /tmp/snap.rootfs_*/{,run/}media/,
    /run/netns/ w,
    mount options=(rw rbind) /run/netns/ -> /tmp/snap.rootfs_*/run/netns/,
    # unidirectional mounts (only for classic system)
    mount options=(rw rbind) /dev/ -> /tmp/snap.rootfs_*/dev/,
    mount options=(rw rslave) -> /tmp/snap.rootfs_*/dev/,

    mount options=(rw rbind) /etc/ -> /tmp/snap.rootfs_*/etc/,
    mount options=(rw rslave) -> /tmp/snap.rootfs_*/etc/,

    mount options=(rw rbind) /home/ -> /tmp/snap.rootfs_*/home/,
    mount options=(rw rslave) -> /tmp/snap.rootfs_*/home/,

    mount options=(rw rbind) /root/ -> /tmp/snap.rootfs_*/root/,
    mount options=(rw rslave) -> /tmp/snap.rootfs_*/root/,

    mount options=(rw rbind) /proc/ -> /tmp/snap.rootfs_*/proc/,
    mount options=(rw rslave) -> /tmp/snap.rootfs_*/proc/,

    mount options=(rw rbind) /sys/ -> /tmp/snap.rootfs_*/sys/,
    mount options=(rw rslave) -> /tmp/snap.rootfs_*/sys/,

    mount options=(rw rbind) /tmp/ -> /tmp/snap.rootfs_*/tmp/,
    mount options=(rw rslave) -> /tmp/snap.rootfs_*/tmp/,

    mount options=(rw rbind) /var/lib/dhcp/ -> /tmp/snap.rootfs_*/var/lib/dhcp/,
    mount options=(rw rslave) -> /tmp/snap.rootfs_*/var/lib/dhcp/,

    mount options=(rw rbind) /var/lib/snapd/ -> /tmp/snap.rootfs_*/var/lib/snapd/,
    mount options=(rw rslave) -> /tmp/snap.rootfs_*/var/lib/snapd/,

    mount options=(rw rbind) /var/snap/ -> /tmp/snap.rootfs_*/var/snap/,
    mount options=(rw rslave) -> /tmp/snap.rootfs_*/var/snap/,

    mount options=(rw rbind) /var/tmp/ -> /tmp/snap.rootfs_*/var/tmp/,
    # /var/volatile is the default volatile location on Yocto/Poky, typically used with read-only rootfs setups
    mount options=(rw rbind) /var/volatile/tmp/ -> /tmp/snap.rootfs_*/var/tmp/,
    mount options=(rw rslave) -> /tmp/snap.rootfs_*/var/tmp/,

    mount options=(rw rbind) /run/ -> /tmp/snap.rootfs_*/run/,
    mount options=(rw rslave) -> /tmp/snap.rootfs_*/run/,

    mount options=(rw rbind) /var/lib/extrausers/ -> /tmp/snap.rootfs_*/var/lib/extrausers/,
    mount options=(rw rslave) -> /tmp/snap.rootfs_*/var/lib/extrausers/,

    mount options=(rw rbind) {,/usr}/lib{,32,64,x32}/modules/ -> /tmp/snap.rootfs_*{,/usr}/lib/modules/,
    mount options=(rw rslave) -> /tmp/snap.rootfs_*{,/usr}/lib/modules/,

    mount options=(rw rbind) {,/usr}/lib{,32,64,x32}/firmware/ -> /tmp/snap.rootfs_*{,/usr}/lib/firmware/,
    mount options=(rw rslave) -> /tmp/snap.rootfs_*{,/usr}/lib/firmware/,

    mount options=(rw rbind) /var/log/ -> /tmp/snap.rootfs_*/var/log/,
    # /var/volatile is the default volatile location on Yocto/Poky, typically used with read-only rootfs setups
    mount options=(rw rbind) /var/volatile/log/ -> /tmp/snap.rootfs_*/var/log/,
    mount options=(rw rslave) -> /tmp/snap.rootfs_*/var/log/,

    mount options=(rw rbind) /usr/src/ -> /tmp/snap.rootfs_*/usr/src/,
    mount options=(rw rslave) -> /tmp/snap.rootfs_*/usr/src/,

    mount options=(rw rbind) /mnt/ -> /tmp/snap.rootfs_*/mnt/,
    mount options=(rw rslave) -> /tmp/snap.rootfs_*/mnt/,

    # allow making host snap-exec available inside base snaps
    mount options=(rw bind) /usr/lib/snapd/ -> /tmp/snap.rootfs_*/usr/lib/snapd/,
    mount options=(rw slave) -> /tmp/snap.rootfs_*/usr/lib/snapd/,

    # allow making re-execed host snap-exec available inside base snaps
    mount options=(ro bind) /snap/core/*/usr/lib/snapd/ -> /tmp/snap.rootfs_*/usr/lib/snapd/,
    # allow making snapd snap tools available inside base snaps
    mount options=(ro bind) /snap/snapd/*/usr/lib/snapd/ -> /tmp/snap.rootfs_*/usr/lib/snapd/,

    mount options=(rw bind) /usr/bin/snapctl -> /tmp/snap.rootfs_*/usr/bin/snapctl,
    mount options=(rw slave) -> /tmp/snap.rootfs_*/usr/bin/snapctl,

    # /etc/alternatives (classic and normal mode)
    mount options=(rw bind) /snap/*/*/etc/alternatives/ -> /tmp/snap.rootfs_*/etc/alternatives/,
    mount options=(rw bind) /snap/*/*/etc/ssl/ -> /tmp/snap.rootfs_*/etc/ssl/,
    mount options=(rw bind) /snap/*/*/etc/nsswitch.conf -> /tmp/snap.rootfs_*/etc/nsswitch.conf,
    mount options=(rw bind) /snap/*/*/etc/apparmor/ -> /tmp/snap.rootfs_*/etc/apparmor/,
    mount options=(rw bind) /snap/*/*/etc/apparmor.d/ -> /tmp/snap.rootfs_*/etc/apparmor.d/,

    # /etc/alternatives (core/legacy mode)
    mount options=(rw bind) /etc/alternatives/ -> /tmp/snap.rootfs_*/etc/alternatives/,

    # making all those directories slave shared.
    mount options=(rw slave) -> /tmp/snap.rootfs_*/etc/alternatives/,
    mount options=(rw slave) -> /tmp/snap.rootfs_*/etc/ssl/,
    mount options=(rw slave) -> /tmp/snap.rootfs_*/etc/nsswitch.conf,
    mount options=(rw slave) -> /tmp/snap.rootfs_*/etc/apparmor/,
    mount options=(rw slave) -> /tmp/snap.rootfs_*/etc/apparmor.d/,

    # the /snap directory
    mount options=(rw rbind) /snap/ -> /tmp/snap.rootfs_*/snap/,
    mount options=(rw rslave) -> /tmp/snap.rootfs_*/snap/,
    # pivot_root preparation and execution
    mount options=(rw bind) /tmp/snap.rootfs_*/var/lib/snapd/hostfs/ -> /tmp/snap.rootfs_*/var/lib/snapd/hostfs/,
    mount options=(rw private) -> /tmp/snap.rootfs_*/var/lib/snapd/hostfs/,

    # pivot_root mediation in AppArmor is not complete. See LP: #1791711.
    # However, we can mediate the new_root and put_old to be what we expect,
    # and then deny directory creation within old_root to prevent trivial
    # pivoting into an allowlisted path.
    pivot_root oldroot=/tmp/snap.rootfs_*/var/lib/snapd/hostfs/ /tmp/snap.rootfs_*/,
    # Explicitly deny creating the old_root directory in case it is
    # inadvertently added somewhere else. While this doesn't resolve
    # LP: #1791711, it provides some hardening.
    # For dir on dir mounts, we do need write permissions in /var though
    audit deny /tmp/snap.rootfs_*/{var/lib/,var/lib/snapd/,var/lib/snapd/hostfs/} w,

    # cleanup
    umount /var/lib/snapd/hostfs/tmp/snap.rootfs_*/,
    umount /var/lib/snapd/hostfs/sys/,
    umount /var/lib/snapd/hostfs/dev/,
    umount /var/lib/snapd/hostfs/proc/,
    mount options=(rw rslave) -> /var/lib/snapd/hostfs/,

    # Hide /writable from view of snaps.
    mount options=(rprivate) -> /{,var/lib/snapd/hostfs/}writable/,
    umount /{,var/lib/snapd/hostfs/}writable/,

    # set up user mount namespace
    mount options=(rslave) -> /,

    # set up mount namespace for parallel instances of classic snaps
    mount options=(rw rbind) /snap/{,*/} -> /snap/{,*/},
    mount options=(rslave) -> /snap/,
    mount options=(rslave) -> /var/snap/,
    mount options=(rw rbind) /var/snap/{,*/} -> /var/snap/{,*/},
    mount options=(rw rshared) -> /var/snap/,

    # Allow reading the os-release file (possibly a symlink to /usr/lib).
    /{etc/,usr/lib/}os-release r,

    # Allow creating /var/lib/snapd/hostfs, if missing
    /var/lib/snapd/hostfs/ rw,

    # set up snap-specific private /tmp dir
    capability chown,
    /tmp/ rw,
    /tmp/snap-private-tmp/ rw,
    /tmp/snap-private-tmp/snap.*/ rw,
    /tmp/snap-private-tmp/snap.*/tmp/ rw,
    mount options=(rw private) ->  /tmp/,
    mount options=(rw bind) /tmp/snap-private-tmp/snap.*/tmp/ -> /tmp/,
    mount fstype=devpts options=(rw) devpts -> /dev/pts/,
    mount options=(rw bind) /dev/pts/ptmx -> /dev/ptmx,     # for bind mounting
    mount options=(rw bind) /dev/pts/ptmx -> /dev/pts/ptmx, # for bind mounting under LXD
    # Workaround for LP: #1584456 on older kernels that mistakenly think
    # /dev/pts/ptmx needs a trailing '/'
    mount options=(rw bind) /dev/pts/ptmx/ -> /dev/ptmx/,
    mount options=(rw bind) /dev/pts/ptmx/ -> /dev/pts/ptmx/,

    # for running snaps on classic
    /snap/ r,
    /snap/** r,
    /snap/ r,
    /snap/** r,

    # NOTE: at this stage the /snap directory is stable as we have called
    # pivot_root already.

    # nvidia handling, glob needs /usr/** and the launcher must be
    # able to bind mount the nvidia dir
    /sys/module/nvidia/version r,
    /sys/**/drivers/nvidia{,_*}/* r,
    /sys/**/nvidia*/uevent r,
    /sys/module/nvidia{,_*}/* r,
    /dev/nvidia[0-9]* r,
    /dev/nvidiactl r,
    /dev/nvidia-uvm r,
    /usr/** r,
    mount options=(rw bind) /usr/lib{,32}/nvidia-*/ -> /{tmp/snap.rootfs_*/,}var/lib/snapd/lib/gl{,32}/,
    mount options=(rw bind) /usr/lib{,32}/nvidia-*/ -> /{tmp/snap.rootfs_*/,}var/lib/snapd/lib/gl{,32}/,
    /tmp/snap.rootfs_*/var/lib/snapd/lib/gl{,32}/{,*} w,
    mount fstype=tmpfs options=(rw nodev noexec) none -> /tmp/snap.rootfs_*/var/lib/snapd/lib/gl{,32}/,
    mount options=(remount ro bind) -> /tmp/snap.rootfs_*/var/lib/snapd/lib/gl{,32}/,

    # Vulkan support
    /tmp/snap.rootfs_*/var/lib/snapd/lib/vulkan/{,*} w,
    mount fstype=tmpfs options=(rw nodev noexec) none -> /tmp/snap.rootfs_*/var/lib/snapd/lib/vulkan/,
    mount options=(remount ro bind) -> /tmp/snap.rootfs_*/var/lib/snapd/lib/vulkan/,

    # GLVND EGL vendor
    /tmp/snap.rootfs_*/var/lib/snapd/lib/glvnd/{,*} w,
    mount fstype=tmpfs options=(rw nodev noexec) none -> /tmp/snap.rootfs_*/var/lib/snapd/lib/glvnd/,
    mount options=(remount ro bind) -> /tmp/snap.rootfs_*/var/lib/snapd/lib/glvnd/,

    # create gl dirs as needed
    /tmp/snap.rootfs_*/ r,
    /tmp/snap.rootfs_*/var/ r,
    /tmp/snap.rootfs_*/var/lib/ r,
    /tmp/snap.rootfs_*/var/lib/snapd/ r,
    /tmp/snap.rootfs_*/var/lib/snapd/lib/ r,
    /tmp/snap.rootfs_*/var/lib/snapd/lib/gl{,32}/ r,
    /tmp/snap.rootfs_*/var/lib/snapd/lib/gl{,32}/** rw,
    /tmp/snap.rootfs_*/var/lib/snapd/lib/vulkan/ r,
    /tmp/snap.rootfs_*/var/lib/snapd/lib/vulkan/** rw,
    /tmp/snap.rootfs_*/var/lib/snapd/lib/glvnd/ r,
    /tmp/snap.rootfs_*/var/lib/snapd/lib/glvnd/** rw,

    # for chroot on steroids, we use pivot_root as a better chroot that makes
    # apparmor rules behave the same on classic and outside of classic.

    # for creating the user data directories: ~/snap, ~/snap/<name> and
    # ~/snap/<name>/<version>
    / r,
    @{HOMEDIRS}/ r,
    # These should both have 'owner' match but due to LP: #1466234, we can't
    # yet
    @{HOME}/ r,
    @{HOME}/snap/{,*/,*/*/} rw,

    # experimental
    @{HOME}/.snap/                rw,
    @{HOME}/.snap/data/{,*/,*/*/} rw,
    @{HOME}/Snap/{,*/,*/*/}       rw,

    # Special case for *classic* snaps that are used by users with existing dirs
    # in /var/lib/. Like jenkins, postgresql, mysql, puppet, ...
    # (see https://forum.snapcraft.io/t/9717)
    # TODO: this can be removed once we support home-dirs outside of /home
    #       better
    /var/ r,
    /var/lib/ r,
    # These should both have 'owner' match but due to LP: #1466234, we can't
    # yet
    /var/lib/*/ r,
    /var/lib/*/snap/{,*/,*/*/} rw,

    # for creating the user shared memory directories
    /{dev,run}/{,shm/} r,
    # This should both have 'owner' match but due to LP: #1466234, we can't yet
    /{dev,run}/shm/{,*/,*/*/} rw,

    # for creating the user XDG_RUNTIME_DIR: /run/user, /run/user/UID and
    # /run/user/UID/<name>
    /run/user/{,[0-9]*/,[0-9]*/*/} rw,

    # Workaround https://launchpad.net/bugs/359338 until upstream handles
    # stacked filesystems generally.
    # encrypted ~/.Private and old-style encrypted $HOME
    @{HOME}/.Private/ r,
    @{HOME}/.Private/** mrwlk,
    # new-style encrypted $HOME
    @{HOMEDIRS}/.ecryptfs/*/.Private/ r,
    @{HOMEDIRS}/.ecryptfs/*/.Private/** mrwlk,

    # Allow snap-confine to move to the void, creating it if necessary.
    /var/lib/snapd/void/ rw,

    # Allow snap-confine to read snap contexts
    /var/lib/snapd/context/snap.* r,

    # Allow snap-confine to unmount stale mount namespaces.
    umount /run/snapd/ns/*.mnt,
    /run/snapd/ns/snap.*.fstab w,
    # Allow snap-confine to read and write mount namespace information files.
    /run/snapd/ns/snap.*.info rw,
    # Required to correctly unmount bound mount namespace.
    # See LP: #1735459 for details.
    umount /,

    # support for locking
    /run/snapd/lock/ rw,
    /run/snapd/lock/*.lock rwk,

    # support for the mount namespace sharing
    capability sys_ptrace,
    # allow snap-confine to read /proc/1/ns/mnt
    ptrace read peer=unconfined,
    # https://forum.snapcraft.io/t/custom-kernel-error-on-readlinkat-in-mount-namespace/6097/21
    ptrace trace peer=unconfined,

    mount options=(rw rbind) /run/snapd/ns/ -> /run/snapd/ns/,
    mount options=(private) -> /run/snapd/ns/,
    / rw,
    /run/ rw,
    /run/snapd/ rw,
    /run/snapd/ns/ rw,
    /run/snapd/ns/*.lock rwk,
    /run/snapd/ns/*.mnt rw,
    ptrace (read, readby, tracedby) peer=/usr/lib/snapd/snap-confine//mount-namespace-capture-helper,
    @{PROC}/*/mountinfo r,
    capability sys_chroot,
    capability sys_admin,
    signal (send, receive) set=(abrt) peer=/usr/lib/snapd/snap-confine,
    signal (send) set=(int) peer=/usr/lib/snapd/snap-confine//mount-namespace-capture-helper,
    signal (send, receive) set=(int, alrm, exists) peer=/usr/lib/snapd/snap-confine,
    signal (receive) set=(exists) peer=/usr/lib/snapd/snap-confine//mount-namespace-capture-helper,

    # workaround for linux 4.13/upstream, see
    # https://forum.snapcraft.io/t/snapd-2-27-6-2-in-debian-sid-blocked-on-apparmor-in-kernel-4-13-0-1/2813/3
    ptrace (trace, tracedby) peer=/usr/lib/snapd/snap-confine,

    # Allow reading snap cookies.
    /var/lib/snapd/cookie/snap.* r,

    # For aa_change_hat() to go into ^mount-namespace-capture-helper
    @{PROC}/[0-9]*/attr/{,apparmor/}current w,

    # As a special exception allow snap-confine to write to anything in /var/lib.
    # This code should be changed to allow delegation so that snap-confine can
    # inherit any file descriptor and pass it to the invoked application but
    # this is not possible in apparmor yet.
    # See https://bugs.launchpad.net/snapd/+bug/1815869
    /var/lib/** rw,

    ^mount-namespace-capture-helper (attach_disconnected) {
        # We run privileged, so be fanatical about what we include and don't use
        # any abstractions
        /etc/ld.so.cache r,
        /{,usr/}lib{,32,64,x32}/{,@{multiarch}/{,atomics/}}ld{-*,64}.so* mrix,
        # libc, you are funny
        /{,usr/}lib{,32,64,x32}/{,@{multiarch}/{,atomics/}}libc{,-[0-9]*}.so* mr,
        /{,usr/}lib{,32,64,x32}/{,@{multiarch}/{,atomics/}}libpthread{,-[0-9]*}.so* mr,
        /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libreadline{,-[0-9]*}.so* mr,
        /{,usr/}lib{,32,64,x32}/{,@{multiarch}/{,atomics/}}librt{,-[0-9]*}.so* mr,
        /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libgcc_s.so* mr,
        /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libncursesw{,-[0-9]*}.so* mr,
        /{,usr/}lib{,32,64,x32}/{,@{multiarch}/{,atomics/}}libresolv{,-[0-9]*}.so* mr,
        /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libselinux.so* mr,
        /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libpcre.so* mr,
        /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libmount.so* mr,
        /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libblkid.so* mr,
        /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libuuid.so* mr,
        # normal libs in order
        /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libapparmor.so* mr,
        /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libcgmanager.so* mr,
        /{,usr/}lib{,32,64,x32}/{,@{multiarch}/{,atomics/}}libdl{,-[0-9]*}.so* mr,
        /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libnih.so* mr,
        /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libnih-dbus.so* mr,
        /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libdbus-1.so* mr,
        /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libudev.so* mr,
        /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libseccomp.so* mr,
        /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libcap.so* mr,

        /usr/lib/snapd/snap-confine mr,

        /dev/null rw,
        /dev/full rw,
        /dev/zero rw,
        /dev/random r,
        /dev/urandom r,

        capability sys_ptrace,
        capability sys_admin,
        # This allows us to read and bind mount the namespace file
        / r,
        @{PROC}/ r,
        @{PROC}/*/ r,
        @{PROC}/*/ns/ r,
        @{PROC}/*/ns/mnt r,
        /run/ r,
        /run/snapd/ r,
        /run/snapd/ns/ r,
        /run/snapd/ns/*.mnt rw,
        # NOTE: the source name is / even though we map /proc/123/ns/mnt
        mount options=(rw bind) / -> /run/snapd/ns/*.mnt,
        # This is the SIGALRM that we send and receive if a timeout expires
        signal (send, receive) set=(alrm) peer=/usr/lib/snapd/snap-confine//mount-namespace-capture-helper,
        # Those two rules are exactly the same but we don't know if the parent process is still alive
        # and hence has the appropriate label or is already dead and hence has no label.
        signal (send) set=(exists) peer=/usr/lib/snapd/snap-confine,
        signal (send) set=(exists) peer=unconfined,
        # This is so that we can abort
        signal (send, receive) set=(abrt) peer=/usr/lib/snapd/snap-confine//mount-namespace-capture-helper,
        #  This is the signal we get if snap-confine dies (we subscribe to it with prctl)
        signal (receive) set=(int) peer=/usr/lib/snapd/snap-confine,
        # This allows snap-confine to be killed from the outside.
        signal (receive) peer=unconfined,
        # This allows snap-confine to wait for us
        ptrace (read, trace, tracedby) peer=/usr/lib/snapd/snap-confine,
    }

    # Allow snap-confine to be killed
    signal (receive) peer=unconfined,

    # Allow switching to snap-update-ns with a per-snap profile.
    change_profile -> snap-update-ns.*,

    # Allow executing snap-update-ns when...

    # ...snap-confine is, conceptually, re-executing and uses snap-update-ns
    # from the distribution package. This is also the location used when using
    # the core/base snap on all-snap systems. The variants here represent
    # various locations of libexecdir across distributions.
    /usr/lib{,exec,64}/snapd/snap-update-ns r,

    # ...snap-confine is not, conceptually, re-executing and uses
    # snap-update-ns from the distribution package but we are already inside
    # the constructed mount namespace so we must traverse "hostfs". The
    # variants here represent various locations of libexecdir across
    # distributions.
    /var/lib/snapd/hostfs/usr/lib{,exec,64}/snapd/snap-update-ns r,

    # ..snap-confine is, conceptually, re-executing and uses snap-update-ns
    # from the core or snapd snaps. Note that the location of the actual snap
    # varies from distribution to distribution. The variants here represent
    # different locations of snap mount directory across distributions.
    /{,var/lib/snapd/}snap/{core,snapd}/*/usr/lib/snapd/snap-update-ns r,

    # ...snap-confine is, conceptually, re-executing and uses snap-update-ns
    # from the core snap or snapd snap, but we are already inside the
    # constructed mount namespace. Here the apparmor kernel module
    # re-constructs the path to snap-update-ns using the "hostfs" mount entry
    # rather than the more "natural" /snap mount entry but we have no control
    # over that.  This is reported as (LP: #1716339). The variants here
    # represent different locations of snap mount directory across
    # distributions.
    /var/lib/snapd/hostfs/{,var/lib/snapd/}snap/{core,snapd}/*/usr/lib/snapd/snap-update-ns r,

    # Allow executing snap-discard-ns, just like the set for snap-update-ns
    # above but with the key difference that snap-discard-ns does not
    # have a dedicated profile so we need to inherit snap-confine's profile.

    /usr/lib{,exec,64}/snapd/snap-discard-ns rix,
    /var/lib/snapd/hostfs/usr/lib{,exec,64}/snapd/snap-discard-ns rix,
    /{,var/lib/snapd/}snap/{core,snapd}/*/usr/lib/snapd/snap-discard-ns rix,
    /var/lib/snapd/hostfs/{,var/lib/snapd/}snap/{core,snapd}/*/usr/lib/snapd/snap-discard-ns rix,

    # Allow mounting /var/lib/jenkins from the host into the snap.
    mount options=(rw rbind) /var/lib/jenkins/ -> /tmp/snap.rootfs_*/var/lib/jenkins/,
    mount options=(rw rslave) -> /tmp/snap.rootfs_*/var/lib/jenkins/,

    # Suppress noisy file_inherit denials (LP: #1850552) until LP: #1849753 is
    # fixed.
    deny /dev/shm/.org.chromium.Chromium.* rw,

    # While snap-confine itself doesn't require unix rules and therefore all
    # unix rules are implicitly denied, adding an explicit deny for unix to
    # silence noisy denials breaks nested lxd. Until the cause is determined,
    # do not use an explicit deny for unix. (LP: #1855355)
    #deny unix,

    # Explicitly deny these accesses which show up on Arch to silence the
    # denials for this unneeded access.
    deny /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libnss_files-[0-9]*.so* mr,
    deny /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libnss_mymachines.[0-9]*.so* mr,
    deny /{,usr/}lib{,32,64,x32}/{,@{multiarch}/}libnss_systemd.[0-9]*.so* mr,
    deny /etc/nsswitch.conf r,
    deny /etc/passwd r,
}

Directory Contents

Dirs: 6 × Files: 8
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abstractions DIR
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React Archives - Weelorum https://weelorum.com/technology/react/ Full Cycle Mobile App Development Services For Startups Sun, 01 Mar 2026 20:04:38 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 LearnPath https://weelorum.com/portfolio-projects/learnpath/ Sun, 01 Mar 2026 20:04:38 +0000 https://weelorum.com/success-stories/learnpath/ LearnPath uses machine learning to create personalized learning paths for professionals. The platform analyzes user performance, adjusts difficulty levels in real-time, and recommends relevant courses. Features include video lessons, interactive quizzes, and certification tracking.

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