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- Return EAFNOSUPPORT instead of EINVAL for unsupported address family,

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this matches the Linux behavior.
 - Check if we have sufficient space allocated for socket structure, which
   fixes a buffer overflow when wrong length is being passed into the
   emulation layer. [1]

PR:		kern/138860
Submitted by:	Mateusz Guzik <mjguzik gmail com>
Reported by:	Alexander Best [1]
MFC after:	2 weeks
This commit is contained in:
Xin LI 2010-02-09 22:30:51 +00:00
parent 61d033d436
commit 5cb9c68cc9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=203728
1 changed files with 7 additions and 2 deletions
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9
sys/compat/linux/linux_socket.c
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@ -128,7 +128,7 @@ do_sa_get(struct sockaddr **sap, const struct osockaddr *osa, int *osalen,
bdom = linux_to_bsd_domain(kosa->sa_family);
if (bdom == -1) {
error = EINVAL;
error = EAFNOSUPPORT;
goto out;
}
@ -157,8 +157,13 @@ do_sa_get(struct sockaddr **sap, const struct osockaddr *osa, int *osalen,
}
} else
#endif
if (bdom == AF_INET)
if (bdom == AF_INET) {
alloclen = sizeof(struct sockaddr_in);
if (*osalen < alloclen) {
error = EINVAL;
goto out;
}
}
sa = (struct sockaddr *) kosa;
sa->sa_family = bdom;