apparmor_parser
loads AppArmor profiles into the kernel
Synopsis
apparmor_parser
[-adrR] [--add] [--debug]
[--replace] [--remove]
[--preprocess] [--Include n]
[--base n] [ --Complain ]
apparmor_parser
[-hv] [--help]
[--version]
add an example, a script, a trick and tips
examples
source
/usr/bin/apparmor_parser -r $(find "$aa_profiles"
-maxdepth 1 -type f) 2>>
"$aa_log"
description
apparmor_parser
is used to import new apparmor.d(5) profiles into the
Linux kernel. The profiles restrict the operations available
to processes by executable name.
The profiles
are loaded into the Linux kernel by the
apparmor_parser program, which takes its input from
standard input. The input supplied to apparmor_parser
should be in the format described in
apparmor.d(5).
options
-a,
--add
Insert the AppArmor definitions
given into the kernel. This is the default action. This
gives an error message if a AppArmor definition by the same
name already exists in the kernel, or if the parser
doesn’t understand its input. It reports when an
addition succeeded.
-r,
--replace
This flag is required if an
AppArmor definition by the same name already exists in the
kernel; used to replace the definition already in the kernel
with the definition given on standard input.
-R,
--remove
This flag is used to remove an
AppArmor definition already in the kernel. Note that it
still requires a complete AppArmor definition as described
in apparmor.d(5) even though the contents of the
definition aren’t used.
-C,
--Complain
For the profile to load in
complain mode.
-B,
--binary
Load a binary (cached) profile,
as produced with the -S option.
-N,
--names
Produce a list of policies from
a given set of profiles (implies -K).
-S,
--stdout
Writes a binary (cached)
profile to stdout (implies -K and -T).
-o file,
--ofile file
Writes a binary (cached)
profile to the specified file (implies -K and
-T)
-b n, --base
n
Set the base directory for
resolving #include directives defined as relative paths.
-I n,
--Include n
Add element n to the search
path when resolving #include directives defined as an
absolute paths.
-f n,
--subdomainfs n
Set the location of the
apparmor security filesystem (default is
"/sys/kernel/security/apparmor").
-m n,
--match-string n
Only use match features
"n".
-n n,
--namespace-string n
Force a profile to load in the
namespace "n".
-X,
--readimpliesX
In the case of profiles that
are loading on systems were READ_IMPLIES_EXEC
is set in the kernel for a given process, load the profile
so that any "r" flags are processed as
"mr".
-k,
--show-cache
Report the cache processing
(hit/miss details) when loading or saving cached
profiles.
-K,
--skip-cache
Perform no caching at all:
disables -W, implies -T.
-T,
--skip-read-cache
By default, if a
profile’s cache is found in the location specified by
--cache-loc and the timestamp is newer
than the profile, it will be loaded from the cache. This
option disables this cache loading behavior.
-W,
--write-cache
Write out cached profiles to
the location specified in --cache-loc. Off
by default. In cases where abstractions have been changed,
and the parser is running with
"--replace", it may make sense to also
use "--skip-read-cache"
with the "--write-cache"
option.
-L,
--cache-loc
Set the location of the cache
directory. If not specified the cache location defaults to
/etc/apparmor.d/cache
-Q,
--skip-kernel-load
Perform all actions except the
actual loading of a profile into the kernel. This is useful
for testing profile generation, caching, etc, without making
changes to the running kernel profiles.
-q,
--quiet
Do not report on the profiles
as they are loaded, and not show warnings.
-v,
--verbose
Report on the profiles as they
are loaded, and show warnings.
-V,
--version
Print the version number and
exit.
-p,
--preprocess
Dump the input profile to
stdout out applying preprocessing flattening includes into
the output profile.
-d,
--debug
Given once, only checks the
profiles to ensure syntactic correctness. Given twice, dumps
its interpretation of the profile for checking.
-D n,
--dump=n
Debug flag for dumping various
structures and passes of policy compilation. A single dump
flag can be specified per --dump option, but the
dump flag can be passed multiple times. Note progress flags
tend to also imply the matching stats flag.
apparmor_parser --dump=dfa-stats --dump=trans-stats <file>
Use
--help=dump to see a full list of which dump
flags are supported
-O n,
--optimize=n
Set the optimization flags used
by policy compilation. A sinlge optimization flag can be
toggled per -O option, but the optimize flag can be
passed multiple times. Turning off some phases of the
optimization can make it so that policy can’t complete
compilation due to size constraints (it is entirely possible
to create a dfa with millions of states that will take days
or longer to compile).
Note: The
parser is set to use a balanced default set of flags, that
will result in resonable compression but not take excessive
amounts of time to complete.
Use
--help=optimize to see a full list of which
optimization flags are supported.
-h,
--help
Give a quick reference
guide.
config file
An optional config file /etc/apparmor/parser.conf can be used to
specify the default options for the parser, which then can be
overridden using the command line options.
The config file ignores leading whitespace and treats lines that
begin with # as comments. Config options are specified one per
line using the same format as the longform command line options
(without the preceding --).
Eg.
#comment
optimize=no-expr-tree
optimize=compress-fast
As with the command line some options accumulate and others
override, ie. when there are conflicting versions of switch the
last option is the one chosen.
Eg.
Optimize=no-minimize
Optimize=minimize
would result in Optimize=minimize being set.
The Include, Dump, and Optimize options accululate except for the
inversion option (no-X vs. X), and a couple options that work by
setting/clearing multiple options (compress-small). In that case
the option will override the flags it sets but will may
accumulate with others.
All other options override previously set values.
bugs
If you find any
bugs, please report them at
<http://https://bugs.launchpad.net/apparmor/+filebug>.
see also
apparmor,
apparmor.d, subdomain.conf,
aa_change_hat, and
<http://wiki.apparmor.net>.