CVS commit: src/bin/ps

["David A. Holland" <dholland%netbsd.org@localhost>]

Module Name:    src
Committed By:   dholland
Date:           Mon Jun 13 03:42:15 UTC 2011

Modified Files:
        src/bin/ps: print.c

Log Message:
When converting from pages to kilobytes, cast the return value of
getpagesize() to size_t. For some reason getpagesize() is defined to
return int, and several of the page counts we get come back from the
kernel as int32_t; in LP64 without the cast the byte count will be
computed in a 32-bit value and for large processes will overflow and
become negative... and then remain negative when divided by 1024 to
convert to kilobytes.

Fixes a problem I hit the other day where I saw negative RSS, which
turns out also to be PR 40642.

Note: other logic in here will break down when we first get >2TB
processes... and int32 page counts will break on >8TB processes. But
hopefully we won't see any of that for a few years yet.


To generate a diff of this commit:
cvs rdiff -u -r1.117 -r1.118 src/bin/ps/print.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.