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[Qemu-devel] [PATCH v3 4/5] linux-user: Add support for setsockopt() opt
From: |
Aleksandar Markovic |
Subject: |
[Qemu-devel] [PATCH v3 4/5] linux-user: Add support for setsockopt() options IPV6_<ADD|DROP>_MEMBERSHIP |
Date: |
Fri, 3 May 2019 19:06:48 +0200 |
From: Neng Chen <address@hidden>
Add support for options IPV6_ADD_MEMBERSHIP and IPV6_ADD_MEMBERSHIP
of the syscall setsockopt(). These options control membership in
multicast groups. Their argument is a pointer to a struct ipv6_mreq,
which is in turn defined as:
struct ipv6_mreq {
/* IPv6 multicast address of group */
struct in6_addr ipv6mr_multiaddr;
/* local IPv6 address of interface */
int ipv6mr_interface;
};
The in6_addr structure consists of fields that are always big-endian
(on any host), so the ipv6_mreq's field ipv6mr_multiaddr doesn't need
any endian conversion, whereas ipv6mr_interface does.
Signed-off-by: Neng Chen <address@hidden>
Signed-off-by: Aleksandar Markovic <address@hidden>
---
linux-user/syscall.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 96cd4bf..b7eb4b7 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -1892,6 +1892,25 @@ static abi_long do_setsockopt(int sockfd, int level, int
optname,
&pki, sizeof(pki)));
break;
}
+ case IPV6_ADD_MEMBERSHIP:
+ case IPV6_DROP_MEMBERSHIP:
+ {
+ struct ipv6_mreq ipv6mreq;
+
+ if (optlen < sizeof(ipv6mreq)) {
+ return -TARGET_EINVAL;
+ }
+
+ if (copy_from_user(&ipv6mreq, optval_addr, sizeof(ipv6mreq))) {
+ return -TARGET_EFAULT;
+ }
+
+ ipv6mreq.ipv6mr_interface = tswap32(ipv6mreq.ipv6mr_interface);
+
+ ret = get_errno(setsockopt(sockfd, level, optname,
+ &ipv6mreq, sizeof(ipv6mreq)));
+ break;
+ }
default:
goto unimplemented;
}
--
2.7.4
- [Qemu-devel] [PATCH v3 0/5] linux-user: A set of miscellaneous patches, Aleksandar Markovic, 2019/05/03
- [Qemu-devel] [PATCH v3 5/5] linux-user: Sanitize interp_info and, for mips only, init field fp_abi, Aleksandar Markovic, 2019/05/03
- [Qemu-devel] [PATCH v3 1/5] linux-user: Fix support for the SIOCATMARK and SIOCGPGRP ioctls for xtensa, Aleksandar Markovic, 2019/05/03
- [Qemu-devel] [PATCH v3 2/5] linux-user: Add support for the SIOCSPGRP ioctl, Aleksandar Markovic, 2019/05/03
- [Qemu-devel] [PATCH v3 4/5] linux-user: Add support for setsockopt() options IPV6_<ADD|DROP>_MEMBERSHIP,
Aleksandar Markovic <=
- [Qemu-devel] [PATCH v3 3/5] linux-user: Add support the SIOCSIFPFLAGS and SIOCGIFPFLAGS ioctls, Aleksandar Markovic, 2019/05/03