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Fix coredump in gethostbyaddr() when the returned answer is too large to

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fit in the static buffer.  This fix causes it to look like there is no
 data available, which is also wrong but is better than dumping core.

PR:		bin/10344
Reviewed by:	billf
Approved by:	jkh
This commit is contained in:
Bill Fenner 2000-02-16 04:39:00 +00:00
parent 528b8853bb
commit 686d0736aa
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=57252
1 changed files with 4 additions and 0 deletions
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4
lib/libc/net/gethostbydns.c
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@ -664,6 +664,10 @@ _gethostbydnsaddr(addr, len, af)
dprintf("res_query failed (%d)\n", n);
return (NULL);
}
if (n > sizeof buf.buf) {
dprintf("static buffer is too small (%d)\n", n);
return (NULL);
}
if (!(hp = gethostanswer(&buf, n, qbuf, T_PTR)))
return (NULL); /* h_errno was set by gethostanswer() */
#ifdef SUNSECURITY