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Force the length of the sockaddr to be correct for AF_INET and AF_INET6

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in bind() and connect().  Linux doesn't care if the length of the
sockaddr matches its address family; FreeBSD does.  This fixes the
known issues with the resolver in linux_base-7.
This commit is contained in:
Bill Fenner 2001-10-26 23:10:08 +00:00
parent 3f5f44ebe8
commit 4730796ca1
1 changed files with 23 additions and 2 deletions
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25
sys/compat/linux/linux_socket.c
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@ -54,6 +54,27 @@
#include <compat/linux/linux_socket.h>
#include <compat/linux/linux_util.h>
/*
* FreeBSD's socket calls require the sockaddr struct length to agree
* with the address family. Linux does not, so we must force it.
*/
static int
linux_to_bsd_namelen(caddr_t name, int namelen)
{
uint16_t family; /* XXX must match Linux sockaddr */
if (copyin(name, &family, sizeof(family)))
return namelen;
switch (family) {
case AF_INET:
return sizeof(struct sockaddr_in);
case AF_INET6:
return sizeof(struct sockaddr_in6);
}
return namelen;
}
#ifndef __alpha__
static int
linux_to_bsd_domain(int domain)
@ -373,7 +394,7 @@ linux_bind(struct thread *td, struct linux_bind_args *args)
bsd_args.s = linux_args.s;
bsd_args.name = (caddr_t)linux_args.name;
bsd_args.namelen = linux_args.namelen;
bsd_args.namelen = linux_to_bsd_namelen(bsd_args.name, linux_args.namelen);
return (bind(td, &bsd_args));
}
@ -407,7 +428,7 @@ linux_connect(struct thread *td, struct linux_connect_args *args)
bsd_args.s = linux_args.s;
bsd_args.name = (caddr_t)linux_args.name;
bsd_args.namelen = linux_args.namelen;
bsd_args.namelen = linux_to_bsd_namelen(bsd_args.name, linux_args.namelen);
error = connect(td, &bsd_args);
if (error != EISCONN)
return (error);