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SPCTL(8)                  BSD System Manager's Manual                 SPCTL(8)

NAME
     spctl -- SecAssessment system policy security

SYNOPSIS
     spctl --assess [-t type] [-] file ...
     spctl --master-enable | --master-disable
     spctl --enable | --disable | --remove [-t type] [--path path] [--requirement requirement]
           [--anchor hash] [--hash hash]
     spctl --status

DESCRIPTION
     spctl manages the security assessment policy subsystem.

     This subsystem maintains and evaluates rules that determine whether the system allows the installation,
     execution, and other operations on files on the system.

     spctl requires one command option that determines its principal operation:

     --add    Add rule(s) to the system-wide assessment rule database.

     -a, --assess
              Requests that spctl perform an assessment on the files given.

     --disable
              Disable one or more rules in the assessment rule database.  Disabled rules are not considered
              when performing assessment, but remain in the database and can be re-enabled later.

     --enable
              Enable rule(s) in the assessment rule database, counteracting earlier disabling.

     --disable

     --master-disable
              Disable the assessment subsystem altogether.  Operations that would be denied by system policy
              will be allowed to proceed; assessment APIs always report success.  Requires root access.

     --master-enable
              Enable the assessment subsystem.  Operations that are denied by system policy will fail;
              assessment APIs report the truth.  Requires root access.

     --remove
              Remove rule(s) from the assessment rule database.

     --status
              Query whether the assessment subsystem is enabled or disabled.

     In addition, the following options are recognized:

     --anchor
              In rule update operations, indicates that the arguments are hashes of anchor certificates.

     --continue
              If the assessment of a file fails, continue assessing additional file arguments.  Without this
              option, the first failed assessment terminates operation.

     --hash   In rule update operations, indicates that the arguments are code directory hashes.

     --ignore-cache
              Do not query or use the assessment object cache.  This may significantly slow down operation.
              Newly generated assessments may still be stored in the cache.

     --label label
              Specifies a string label to attach to new rules, or find in existing rules.  Labels are arbi-trary arbitrary
              trary strings that are assigned by convention.  Rule labels are optional.

     --no-cache
              Do not place the outcome of any assessments into the assessment object cache.  No other
              assessment may reuse this outcome.  This option not prohibit the use of existing cache
              entries.

     --path   In rule update operations, indicates that the argument(s) denote paths to files on disk.

     --priority priority
              In rule update operations, specifies the priority of the rule(s) created or changed.  Priori-ties Priorities
              ties are floating-point numbers.  Higher numeric values indicate higher priority.

     --raw    When displaying the outcome of an assessment, write it as a "raw" XML plist instead of parsing
              it in somewhat more friendly form.  This is useful when used in scripts, or to access newly
              invented assessment aspects that spctl does not yet know about.

     --requirement
              In rule update operations, indicates that the argument(s) are code requirement source.

     --rule   In rule update operations, indicates that the argument(s) are the index numbers of existing
              rules.

     -t, --type
              Specify which type of assessment is desired: execute to assess code execution, install to
              assess installation of an installer package, and open to assess the opening of documents.  The
              default is to assess execution.

     -v, --verbose
              Requests more verbose output.  Repeat the option or give it a higher numeric value to increase
              verbosity.

RULE SUBJECTS
     The system assessement rule database contains entries that match candidates based on Code Requirements.
     spctl allows you to specify these requirements directly using the --requirement option.  In addition,
     individual programs on disk can be addressed with the --path option (which uses their Designated
     Requirement).  The --anchor option takes the hash of a (full) certificate and turns it into a require-ment requirement
     ment matching any signature based on that anchor certificate.  Alternatively, it can take the absolute
     path of a certificate file on disk, containing the DER form of an anchor certificate.  Finally, the
     --hash option generates a code requirement that denotes only and exactly one program whose CodeDirec-tory CodeDirectory
     tory hash is given.  The means of specifying subjects does not affect the remaining processing.

FILES
     /var/db/SystemPolicy  The system policy database.
     /var/db/.SystemPolicy-default
                           A copy of the initial distribution version of the system policy database.  Useful
                           for starting over if the database gets messed up beyond recognition.

EXAMPLES
     To check whether Mail.app is allowed to run on the local system:
           spctl -a /Applications/Mail.app

     To allow Frobozz.app to run on the local system:
           spctl --add --label "My Stuff" /Applications/Frobozz.app

     To forbid all code obtained from the Mac App Store from running:
           spctl --disable --label "Mac App Store"

DIAGNOSTICS
     spctl exits zero on success, or one if an operation has failed.  Exit code two indicates unrecognized
     or unsuitable arguments.  If an assessment operation results in denial but no other problem has
     occurred, the exit code is three.

SEE ALSO
     codesign(1), syspolicyd(1)

HISTORY
     The system policy facility and spctl command first appeared in Mac OS X Lion 10.7.3 as a limited devel-oper developer
     oper preview.

BSD                            January 19, 2012                            BSD