From: Rich Felker <dalias@aerifal.cx>
Date: Sun, 5 Jun 2011 23:29:52 +0000 (-0400)
Subject: safety fix for glob's vla usage: disallow patterns longer than PATH_MAX
X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=commitdiff_plain;h=0dc99ac413d8bc054a2e95578475c7122455eee8;hp=0dc99ac413d8bc054a2e95578475c7122455eee8

safety fix for glob's vla usage: disallow patterns longer than PATH_MAX

this actually inadvertently disallows some valid patterns with
redundant / or * characters, but it's better than allowing unbounded
vla allocation.

eventually i'll write code to move the pattern to the stack and
eliminate redundancy to ensure that it fits in PATH_MAX at the
beginning of glob. this would also allow it to be modified in place
for passing to fnmatch rather than copied at each level of recursion.
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