tree c56eed67b272ceece3e6787e8bdba1f6aca7df04
parent 63cac4e29a61487423f63bed9150aa9aec906823
author Rich Felker <dalias@aerifal.cx> 1421868365 -0500
committer Rich Felker <dalias@aerifal.cx> 1421868365 -0500

fix erroneous return of partial username matches by getspnam[_r]

when using /etc/shadow (rather than tcb) as its backend, getspnam_r
matched any username starting with the caller-provided string rather
than requiring an exact match. in practice this seems to have affected
only systems where one valid username is a prefix for another valid
username, and where the longer username appears first in the shadow
file.