summaryrefslogtreecommitdiff
path: root/security/apparmor/include/apparmor.h
AgeCommit message (Collapse)Author
2023-10-18apparmor: add io_uring mediationGeorgia Garcia
For now, the io_uring mediation is limited to sqpoll and override_creds. Signed-off-by: Georgia Garcia <georgia.garcia@canonical.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
2023-10-18apparmor: add user namespace creation mediationJohn Johansen
Unprivileged user namespace creation is often used as a first step in privilege escalation attacks. Instead of disabling it at the sysrq level, which blocks its legitimate use as for setting up a sandbox, allow control on a per domain basis. This allows an admin to quickly lock down a system while also still allowing legitimate use. Reviewed-by: Georgia Garcia <georgia.garcia@canonical.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
2022-10-03apparmor: Fix undefined references to zstd_ symbolsJohn Johansen
Unfortunately the switch to using zstd compression did not properly ifdef all the code that uses zstd_ symbols. So that if exporting of binary policy is disabled in the config the compile will fail with the following errors security/apparmor/lsm.c:1545: undefined reference to `zstd_min_clevel' aarch64-linux-ld: security/apparmor/lsm.c:1545: undefined reference to `zstd_max_clevel' Reported-by: kernel test robot <lkp@intel.com> Fixes: 52ccc20c652b ("apparmor: use zstd compression for profile data") Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Jon Tourville <jon.tourville@canonical.com>
2022-10-03apparmor: add mediation class information to auditingJohn Johansen
Audit messages currently don't contain the mediation class which can make them less clear than they should be in some circumstances. With newer mediation classes coming this potential confusion will become worse. Fix this by adding the mediatin class to the messages. Signed-off-by: John Johansen <john.johansen@canonical.com>
2022-10-03apparmor: convert xmatch to using the new shared policydb structJohn Johansen
continue permission unification by converting xmatch to use the policydb struct that is used by the other profile dfas. Signed-off-by: John Johansen <john.johansen@canonical.com>
2022-10-03apparmor: reserve mediation classesJohn Johansen
Reserve mediation classes that exist in out of tree development branches or are used by userspace mediation helpers. Signed-off-by: John Johansen <john.johansen@canonical.com>
2022-07-09apparmor: make export of raw binary profile to userspace optionalJohn Johansen
Embedded systems have limited space and don't need the introspection or checkpoint restore capability provided by exporting the raw profile binary data so make it so make it a config option. This will reduce run time memory use and also speed up policy loads. Signed-off-by: John Johansen <john.johansen@canonical.com>
2019-12-03Merge tag 'apparmor-pr-2019-12-03' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor Pull apparmor updates from John Johansen: "Features: - increase left match history buffer size to provide improved conflict resolution in overlapping execution rules. - switch buffer allocation to use a memory pool and GFP_KERNEL where possible. - add compression of policy blobs to reduce memory usage. Cleanups: - fix spelling mistake "immutible" -> "immutable" Bug fixes: - fix unsigned len comparison in update_for_len macro - fix sparse warning for type-casting of current->real_cred" * tag 'apparmor-pr-2019-12-03' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor: apparmor: make it so work buffers can be allocated from atomic context apparmor: reduce rcu_read_lock scope for aa_file_perm mediation apparmor: fix wrong buffer allocation in aa_new_mount apparmor: fix unsigned len comparison with less than zero apparmor: increase left match history buffer size apparmor: Switch to GFP_KERNEL where possible apparmor: Use a memory pool instead per-CPU caches apparmor: Force type-casting of current->real_cred apparmor: fix spelling mistake "immutible" -> "immutable" apparmor: fix blob compression when ns is forced on a policy load apparmor: fix missing ZLIB defines apparmor: fix blob compression build failure on ppc apparmor: Initial implementation of raw policy blob compression
2019-06-05treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441Thomas Gleixner
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation version 2 of the license extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 315 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Armijn Hemel <armijn@tjaldur.nl> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531190115.503150771@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-11apparmor: Initial implementation of raw policy blob compressionChris Coulson
This adds an initial implementation of raw policy blob compression, using deflate. Compression level can be controlled via a new sysctl, "apparmor.rawdata_compression_level", which can be set to a value between 0 (no compression) and 9 (highest compression). Signed-off-by: Chris Coulson <chris.coulson@canonical.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
2018-03-13apparmor: add base infastructure for socket mediationJohn Johansen
version 2 - Force an abi break. Network mediation will only be available in v8 abi complaint policy. Provide a basic mediation of sockets. This is not a full net mediation but just whether a spcific family of socket can be used by an application, along with setting up some basic infrastructure for network mediation to follow. the user space rule hav the basic form of NETWORK RULE = [ QUALIFIERS ] 'network' [ DOMAIN ] [ TYPE | PROTOCOL ] DOMAIN = ( 'inet' | 'ax25' | 'ipx' | 'appletalk' | 'netrom' | 'bridge' | 'atmpvc' | 'x25' | 'inet6' | 'rose' | 'netbeui' | 'security' | 'key' | 'packet' | 'ash' | 'econet' | 'atmsvc' | 'sna' | 'irda' | 'pppox' | 'wanpipe' | 'bluetooth' | 'netlink' | 'unix' | 'rds' | 'llc' | 'can' | 'tipc' | 'iucv' | 'rxrpc' | 'isdn' | 'phonet' | 'ieee802154' | 'caif' | 'alg' | 'nfc' | 'vsock' | 'mpls' | 'ib' | 'kcm' ) ',' TYPE = ( 'stream' | 'dgram' | 'seqpacket' | 'rdm' | 'raw' | 'packet' ) PROTOCOL = ( 'tcp' | 'udp' | 'icmp' ) eg. network, network inet, Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Seth Arnold <seth.arnold@canonical.com>
2017-09-22apparmor: add mount mediationJohn Johansen
Add basic mount mediation. That allows controlling based on basic mount parameters. It does not include special mount parameters for apparmor, super block labeling, or any triggers for apparmor namespace parameter modifications on pivot root. default userspace policy rules have the form of MOUNT RULE = ( MOUNT | REMOUNT | UMOUNT ) MOUNT = [ QUALIFIERS ] 'mount' [ MOUNT CONDITIONS ] [ SOURCE FILEGLOB ] [ '->' MOUNTPOINT FILEGLOB ] REMOUNT = [ QUALIFIERS ] 'remount' [ MOUNT CONDITIONS ] MOUNTPOINT FILEGLOB UMOUNT = [ QUALIFIERS ] 'umount' [ MOUNT CONDITIONS ] MOUNTPOINT FILEGLOB MOUNT CONDITIONS = [ ( 'fstype' | 'vfstype' ) ( '=' | 'in' ) MOUNT FSTYPE EXPRESSION ] [ 'options' ( '=' | 'in' ) MOUNT FLAGS EXPRESSION ] MOUNT FSTYPE EXPRESSION = ( MOUNT FSTYPE LIST | MOUNT EXPRESSION ) MOUNT FSTYPE LIST = Comma separated list of valid filesystem and virtual filesystem types (eg ext4, debugfs, etc) MOUNT FLAGS EXPRESSION = ( MOUNT FLAGS LIST | MOUNT EXPRESSION ) MOUNT FLAGS LIST = Comma separated list of MOUNT FLAGS. MOUNT FLAGS = ( 'ro' | 'rw' | 'nosuid' | 'suid' | 'nodev' | 'dev' | 'noexec' | 'exec' | 'sync' | 'async' | 'remount' | 'mand' | 'nomand' | 'dirsync' | 'noatime' | 'atime' | 'nodiratime' | 'diratime' | 'bind' | 'rbind' | 'move' | 'verbose' | 'silent' | 'loud' | 'acl' | 'noacl' | 'unbindable' | 'runbindable' | 'private' | 'rprivate' | 'slave' | 'rslave' | 'shared' | 'rshared' | 'relatime' | 'norelatime' | 'iversion' | 'noiversion' | 'strictatime' | 'nouser' | 'user' ) MOUNT EXPRESSION = ( ALPHANUMERIC | AARE ) ... PIVOT ROOT RULE = [ QUALIFIERS ] pivot_root [ oldroot=OLD PUT FILEGLOB ] [ NEW ROOT FILEGLOB ] SOURCE FILEGLOB = FILEGLOB MOUNTPOINT FILEGLOB = FILEGLOB eg. mount, mount /dev/foo, mount options=ro /dev/foo -> /mnt/, mount options in (ro,atime) /dev/foo -> /mnt/, mount options=ro options=atime, Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Seth Arnold <seth.arnold@canonical.com>
2017-09-22apparmor: add the ability to mediate signalsJohn Johansen
Add signal mediation where the signal can be mediated based on the signal, direction, or the label or the peer/target. The signal perms are verified on a cross check to ensure policy consistency in the case of incremental policy load/replacement. The optimization of skipping the cross check when policy is guaranteed to be consistent (single compile unit) remains to be done. policy rules have the form of SIGNAL_RULE = [ QUALIFIERS ] 'signal' [ SIGNAL ACCESS PERMISSIONS ] [ SIGNAL SET ] [ SIGNAL PEER ] SIGNAL ACCESS PERMISSIONS = SIGNAL ACCESS | SIGNAL ACCESS LIST SIGNAL ACCESS LIST = '(' Comma or space separated list of SIGNAL ACCESS ')' SIGNAL ACCESS = ( 'r' | 'w' | 'rw' | 'read' | 'write' | 'send' | 'receive' ) SIGNAL SET = 'set' '=' '(' SIGNAL LIST ')' SIGNAL LIST = Comma or space separated list of SIGNALS SIGNALS = ( 'hup' | 'int' | 'quit' | 'ill' | 'trap' | 'abrt' | 'bus' | 'fpe' | 'kill' | 'usr1' | 'segv' | 'usr2' | 'pipe' | 'alrm' | 'term' | 'stkflt' | 'chld' | 'cont' | 'stop' | 'stp' | 'ttin' | 'ttou' | 'urg' | 'xcpu' | 'xfsz' | 'vtalrm' | 'prof' | 'winch' | 'io' | 'pwr' | 'sys' | 'emt' | 'exists' | 'rtmin+0' ... 'rtmin+32' ) SIGNAL PEER = 'peer' '=' AARE eg. signal, # allow all signals signal send set=(hup, kill) peer=foo, Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Seth Arnold <seth.arnold@canonical.com>
2017-06-10apparmor: move ptrace checks to using labelsJohn Johansen
Signed-off-by: John Johansen <john.johansen@canonical.com>
2017-06-10apparmor: switch from profiles to using labels on contextsJohn Johansen
Begin the actual switch to using domain labels by storing them on the context and converting the label to a singular profile where possible. Signed-off-by: John Johansen <john.johansen@canonical.com>
2017-01-16apparmor: move lib definitions into separate lib includeJohn Johansen
Signed-off-by: John Johansen <john.johansen@canonical.com>
2016-07-12apparmor: add parameter to control whether policy hashing is usedJohn Johansen
Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Tyler Hicks <tyhicks@canonical.com> Acked-by: Seth Arnold <seth.arnold@canonical.com>
2015-02-22Apparmor: mediated_filesystem() should use dentry->d_sb not inode->i_sbDavid Howells
mediated_filesystem() should use dentry->d_sb not dentry->d_inode->i_sb and should avoid file_inode() also since it is really dealing with the path. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-05-06nick kvfree() from apparmorAl Viro
too many places open-code it Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-08-14apparmor: convert profile lists to RCU based lockingJohn Johansen
Signed-off-by: John Johansen <john.johansen@canonical.com>
2013-04-28apparmor: add kvzalloc to handle zeroing for kvmallocJohn Johansen
Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Steve Beattie <sbeattie@ubuntu.com>
2012-03-14AppArmor: Add ability to load extended policyJohn Johansen
Add the base support for the new policy extensions. This does not bring any additional functionality, or change current semantics. Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Kees Cook <kees@ubuntu.com>
2012-03-14AppArmor: Update dfa matching routines.John Johansen
Update aa_dfa_match so that it doesn't result in an input string being walked twice (once to get its length and another time to match) Add a single step functions aa_dfa_next Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Kees Cook <kees@ubuntu.com>
2012-01-13module_param: make bool parameters really bool (drivers & misc)Rusty Russell
module_param(bool) used to counter-intuitively take an int. In fddd5201 (mid-2009) we allowed bool or int/unsigned int using a messy trick. It's time to remove the int/unsigned int option. For this version it'll simply give a warning, but it'll break next kernel version. Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2010-08-02AppArmor: misc. base functions and definesJohn Johansen
Miscellaneous functions and defines needed by AppArmor, including the base path resolution routines. Signed-off-by: John Johansen <john.johansen@canonical.com> Signed-off-by: James Morris <jmorris@namei.org>
generated by cgit v1.2.3 (git 2.46.0) at 2025-07-25 18:57:55 +0000