Copyright (c) 1999
Brett Lymn - blymn@baea.com.au, brett_lymn@yahoo.com.au
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$Id: veriexecctl.8,v 1.15 2005/08/02 18:06:14 elad Exp $
.Dd August 2, 2005 .Dt VERIEXECCTL 8 .Os .Sh NAME .Nm veriexecctl .Nd load or report veriexec fingerprints .Sh SYNOPSIS .Nm .Cm load Ar signatures .Sh DESCRIPTION The .Nm command is used to manipulate the Veriexec feature. Veriexec must have been configured into the booted kernel for this commaned to work. .Sh COMMANDS l -tag -width 25n t Cm load Ar signatures Load the fingerprint entries contained in .Ar signatures into the in kernel tables. This operation is only available if kern.veriexec.strict is zero. Once loaded the kernel can then validate executed programs or files against the loaded fingerprints and report when fingerprints do not match. .El .Sh SIGNATURES The
a signatures file contains lines of fields (separated by one or more whitespace characters) of the form:
p .Dl path type fingerprint options
p Where .Em path is the full path to the file and .Em type is the type of fingerprint used, see above for the default list. Other fingerprints may be available depending on kernel configuration. The .Em fingerprint field is a hexadecimal representation of the fingerprint for the file. The field .Em options contains the associated options for the file. Currently there are three valid options:
p l -tag -width INDIRECT -compact t Dv DIRECT Allow direct execution only. t Dv INDIRECT If this option is set then the executable cannot be invoked directly, it can only be used as an interpreter in shell scripts. t Dv FILE Indicates that the fingerprint is associated with a file, not an executable. Files have their fingerprints verified during .Xr open 2 and are automatically made read only. This option may be used to verify shared libraries have not been tampered with. .El
p There must be only one executable/fingerprint pair per line. Comments are indicated by the first character of a line being a .Sq # character. Multiple options can be combined using a .Sq , character. If no options are specified, both direct and indirect execution are implied. .Sh FILES l -tag -width /etc/signatures -compact t Pa /dev/veriexec veriexec device node t Pa /etc/signatures default signatures file .El .Sh SEE ALSO .Xr veriexec 4 ,
a /usr/share/examples/veriexecctl/gen_md5 ,
a /usr/share/examples/veriexecctl/gen_rmd160 ,
a /usr/share/examples/veriexecctl/gen_sha1 .Sh HISTORY .Nm first appeared in .Nx 2.0 . .Sh NOTES .Nm requires the kernel to have been configured with the .Dv VERIFIED_EXEC option and the veriexec pseudo-device. .Sh BUGS There must be no whitespace in the path field of a fingerprint entry.