NAME

pdfck − compare Product Description File to File System

SYNOPSIS

pdfck [-n] alternate_root] PDF

DESCRIPTION

pdfck is a program that compares the file descriptions in a PDF (Product Description File) to the actual files on the file system.  It is intended as a tool to audit the file system and detect corruption and/or tampering.  Differences found are reported in the format described in the pdfdiff(1M) manual entry. (Size growth (-p option) is not reported.)  For a detailed explanation of the PDF fields see pdf(4). The command

pdfck -r /pseudoroot /system/UX_CORE/pdf

is roughly equivalent to

 
mkpdf -r /pseudoroot /system/UX_CORE/pdf - | pdfdiff /system/UX_CORE/pdf -

Options

pdfck recognizes the following options:

-n Compare numerical representation of user id uid and group id gid of each file, instead of the usual text representation.  If owner or group is recorded in the PDF as a name, look the name up in the /etc/passwd or /etc/group file, respectively, to find the id number. 

-r alternate_root alternate_root is a string that is prefixed to each pathname in the prototype when the filesystem is being searched for that file.  Default is NULL. 

EXAMPLES

The following output indicates tampering with /bin/cat:

/bin/cat: mode(-r-xr-xr-x -> -r-sr-xr-x)(became suid), size(27724 -> 10345),
checksum(1665 -> 398)

FILES

/system/fileset_name/pdf

SEE ALSO

mkpdf(1M), pdfdiff(1M), pdf(4). 

Hewlett-Packard Company  —  HP-UX Release 9.0: August 1992