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[Qemu-devel] [PATCH v3] Add getsockopt for settable SOL_IPV6 options
From: |
tom . deseyn |
Subject: |
[Qemu-devel] [PATCH v3] Add getsockopt for settable SOL_IPV6 options |
Date: |
Fri, 14 Dec 2018 16:41:31 +0100 |
From: Tom Deseyn <address@hidden>
Thank you for reviewing Laurant.
Sorry for missing history, I'm not used to sending patches via mail.
I got an email about code style. For now, I'm sticking to the style
that is used in the function.
v2: default to unimplemented
v3: match kernel behavior
Signed-off-by: Tom Deseyn <address@hidden>
---
linux-user/syscall.c | 36 ++++++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 280137da8c..f103437f26 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -2352,6 +2352,42 @@ static abi_long do_getsockopt(int sockfd, int level, int
optname,
break;
}
break;
+ case SOL_IPV6:
+ switch (optname) {
+ case IPV6_MTU_DISCOVER:
+ case IPV6_MTU:
+ case IPV6_V6ONLY:
+ case IPV6_RECVPKTINFO:
+ case IPV6_UNICAST_HOPS:
+ case IPV6_MULTICAST_HOPS:
+ case IPV6_MULTICAST_LOOP:
+ case IPV6_RECVERR:
+ case IPV6_RECVHOPLIMIT:
+ case IPV6_2292HOPLIMIT:
+ case IPV6_CHECKSUM: {
+ void* target_addr;
+ if (get_user_u32(len, optlen))
+ return -TARGET_EFAULT;
+ if (len < 0)
+ return -TARGET_EINVAL;
+ lv = sizeof(val);
+ ret = get_errno(getsockopt(sockfd, level, optname, &val, &lv));
+ if (ret < 0)
+ return ret;
+ if (lv < len)
+ len = lv;
+ if (put_user_u32(len, optlen))
+ return -TARGET_EFAULT;
+ target_addr = lock_user(VERIFY_WRITE, optval_addr, len, 0);
+ tswap32s((uint32_t*)&val);
+ memcpy(target_addr, &val, len);
+ unlock_user(target_addr, optval_addr, len);
+ break;
+ }
+ default:
+ goto unimplemented;
+ }
+ break;
default:
unimplemented:
gemu_log("getsockopt level=%d optname=%d not yet supported\n",
--
2.19.2