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[Qemu-devel] [PATCH V3 3/3] linux-user: make host_to_target_cmsg support


From: Jing Huang
Subject: [Qemu-devel] [PATCH V3 3/3] linux-user: make host_to_target_cmsg support SO_TIMESTAMP cmsg_type
Date: Sat, 21 Jul 2012 01:30:54 +0000

Signed-off-by: Jing Huang <address@hidden>
---
 linux-user/syscall.c |   15 +++++++++++--
 1 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 2228b1f..7521746 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -1350,8 +1350,17 @@ static inline abi_long host_to_target_cmsg(struct 
target_msghdr *target_msgh,
         target_cmsg->cmsg_len = tswapal(TARGET_CMSG_LEN(len));
 
         if (cmsg->cmsg_level != TARGET_SOL_SOCKET || cmsg->cmsg_type != 
SCM_RIGHTS) {
-            gemu_log("Unsupported ancillary data: %d/%d\n", cmsg->cmsg_level, 
cmsg->cmsg_type);
-            memcpy(target_data, data, len);
+            if ((cmsg->cmsg_type == SO_TIMESTAMP) &&
+                                    (len == sizeof(struct timeval))) {
+                /* copy struct timeval to target */
+                struct timeval *tv = (struct timeval *)data;
+                struct timeval *target_tv = (struct timeval *)target_data;
+
+                tv->tv_sec = tswap32(target_tv->tv_sec);
+                tv->tv_usec = tswap32(target_tv->tv_usec);
+            } else {
+                gemu_log("Unsupported ancillary data: %d/%d\n",
+                                            cmsg->cmsg_level, cmsg->cmsg_type);
+                memcpy(target_data, data, len);
+            }
         } else {
             int *fd = (int *)data;
             int *target_fd = (int *)target_data;
-- 
1.7.8.6




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