sasLM (version 1.0.1)

writeMD5LM: Write the MD5 integrity manifest for an installed package

Description

Write the standard R MD5 manifest into an installed package directory so that checkMD5sums (and IQLM) can verify file integrity. The manifest records the md5 checksum of every installed file. It is the same MD5 file that CRAN ships and that R's own installer writes; packages installed from CRAN already contain it, but a local source install usually does not (which is why the IQ integrity check then reports WARN). Run writeMD5LM() once, immediately after installing the package, to record the trusted baseline; thereafter checkMD5sums() detects any later modification of the installed files.

Usage

writeMD5LM(pkg = "sasLM", lib.loc = NULL)

Value

Invisibly, the path to the MD5 file that was written. Called for its side effect.

Arguments

pkg

name of the installed package whose MD5 manifest should be written.

lib.loc

character vector of library paths to search for pkg, passed to find.package. NULL uses the default libraries.

Author

Kyun-Seop Bae <[e-mail]>

Details

The manifest is written in the format used by checkMD5sums: one line per file, <md5sum> *<relative-path>. The MD5 file itself is excluded. The function uses only the exported md5sum. The installed package directory must be writable.

See Also

IQLM, checkMD5sums, md5sum

Examples

#writeMD5LM("sasLM")
#sasLM::IQLM()       # the file-integrity check now reports PASS