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In sbappendaddr(), if the sockaddr length is larger than will fit in

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an mbuf, allocate enough external storage to hold the sockaddr.  Thanks
to enami tsugutomo <enami@cv.sony.co.jp> for providing sanity-checks.
This commit is contained in:
thorpej 1997-06-26 05:56:38 +00:00
parent 73de3e34b8
commit 01cbda9800
1 changed files with 8 additions and 3 deletions
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11
sys/kern/uipc_socket2.c
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@ -1,4 +1,4 @@
/* $NetBSD: uipc_socket2.c,v 1.19 1997/01/11 05:16:46 thorpej Exp $ */
/* $NetBSD: uipc_socket2.c,v 1.20 1997/06/26 05:56:38 thorpej Exp $ */
/*
* Copyright (c) 1982, 1986, 1988, 1990, 1993
@ -598,11 +598,16 @@ panic("sbappendaddr");
}
if (space > sbspace(sb))
return (0);
if (asa->sa_len > MLEN)
return (0);
MGET(m, M_DONTWAIT, MT_SONAME);
if (m == 0)
return (0);
if (asa->sa_len > MLEN) {
MEXTMALLOC(m, asa->sa_len, M_NOWAIT);
if ((m->m_flags & M_EXT) == 0) {
m_free(m);
return (0);
}
}
m->m_len = asa->sa_len;
bcopy((caddr_t)asa, mtod(m, caddr_t), asa->sa_len);
if (n)