Ubuntu Manpage: apparmor_parser - loads AppArmor profiles into the kernel

Provided by: apparmor_2.12-4ubuntu5.3_amd64

NAME

       apparmor_parser - loads AppArmor profiles into the kernel

SYNOPSIS

       apparmor_parser [options] <command> [profiles]...

       apparmor_parser [options] <command>

       apparmor_parser [-hv] [--help] [--version]

DESCRIPTION

       apparmor_parser is used as a general tool to compile, and manage AppArmor policy, including loading new
       apparmor.d(5) profiles into the Linux kernel.

       AppArmor profiles restrict the operations available to processes.

       The profiles are loaded into the Linux kernel by the apparmor_parser program. The profiles may be
       specified by file name or a directory name containing a set of profiles. If a directory is specified then
       the apparmor_parser will try to do a profile load for each file in the directory that is not a dot file,
       or explicitly black listed (*.dpkg-new, *.dpkg-old, *.dpkg-dist, *-dpkg-bak, *.repnew, *.rpmsave, *orig,
       *.rej, *~). The apparmor_parser will fall back to taking input from standard input if a profile or
       directory is not supplied.

       The input supplied to apparmor_parser should be in the format described in apparmor.d(5).

COMMANDS

       The command set is broken into four subcategories.

       unprivileged commands
           Commands that don't require any privilege and don't operate on profiles.

       unprivileged profile commands
           Commands that operate on a profile either specified on the command line or read from stdin if no
           profile was specified.

       privileged commands
           Commands that require the MAC_ADMIN capability within the affected AppArmor namespace to load policy
           into the kernel or filesystem write permissions to update the affected privileged files (cache etc).

       privileged profile commands
           Commands that require privilege and operate on profiles.

Unprivileged commands

       -V, --version
           Print the version number and exit.

       -h, --help
           Give a quick reference guide.

Unprivileged profile commands

       -N, --names
           Produce a list of policies from a given set of profiles (implies -K).

       -p, --preprocess
           Apply preprocessing to the input profile(s) by flattening includes into the output profile and dump
           to stdout.

       -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)

Privileged commands

       --purge-cache
           Unconditionally clear out cached profiles.

Privileged profile commands

       -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.

OPTIONS

-B, --binary
Treat the profile files specified on the command line (or stdin if none specified) as binary cache
files, produced with the -S or -o options, and load to the kernel as specified by -a, -r, and -R
(implies -K and -T).

-C, --Complain
Force the profile to load in complain mode.

-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, --features-file n
Use the features file located at path "n" (default is /etc/apparmor.d/cache/.features). If the
--cache-loc option is present, the ".features" file in the specified cache directory is used.

-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.

--skip-bad-cache
Skip updating the cache if it contains cached profiles in a bad or inconsistent state

-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.

This also removes the need for privilege to execute the commands that manage policy in the kernel

-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.

--warn=n
Enable various warnings during policy compilation. A single dump flag can be specified per --warn
option, but the --warn flag can be passed multiple times.

apparmor_parser --warn=rules-not-enforced ...

Use --help=warn to see a full list of which warn flags are supported.

-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

-j n, --jobs=n
Set the number of jobs used to compile the specified policy. Where n can be

# - a specific number of jobs
auto - the # of cpus in the in the system
x# - # * number of cpus

Eg.
-j8 OR --jobs=8 allows for 8 parallel jobs
-jauto OR --jobs=auto sets the jobs to the # of cpus
-jx4 OR --jobs=x4 sets the jobs to # of cpus * 4
-jx1 is equivalent to -jauto

The default value is the number of cpus in the system.

--max-jobs n
Set a hard cap on the value that can be specified by the --jobs flag. It takes the same set of
options available to the --jobs option, and defaults to 8*cpus

-O n, --optimize=n
Set the optimization flags used by policy compilation. A single 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 reasonable
compression but not take excessive amounts of time to complete.

Use --help=optimize to see a full list of which optimization flags are supported.

--abort-on-error Abort processing of profiles on the first error encountered, otherwise the parser will
continue to try to compile other profiles if specified.
Note: If an error is encountered while processing profiles the last error encountered will be used to
set the exit code.

--skip-bad-cache-rebuild The default behavior of the parser is to check if a cached version of a profile
exists and if it does it attempt to load it into the kernel. If that load is rejected, then the parser
will attempt to rebuild the cache file, and load again.
This option tells the parser to not attempt to rebuild the cache on failure, instead the parser
continues on with processing the remaining profiles.

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 <https://bugs.launchpad.net/apparmor/+filebug>.