[Qemu-devel] [PATCH 02/02] linux-user : add vmsplice system call

[vibi sreenivasan]

linux-user : add vmsplice system call

Signed-off-by: vibi sreenivasan <address@hidden>

---
 linux-user/syscall.c |   14 ++++++++++++++
 1 files changed, 14 insertions(+), 0 deletions(-)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index dc726ad..bb32f84 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -6598,6 +6598,20 @@ abi_long do_syscall(void *cpu_env, int num, abi_long 
arg1,
         break;
 #endif
 
+#ifdef TARGET_NR_vmsplice
+       case TARGET_NR_vmsplice:
+        {
+            int count = arg3;
+            struct iovec *vec;
+
+            vec = alloca(count * sizeof(struct iovec));
+            if (lock_iovec(VERIFY_READ, vec, arg2, count, 1) < 0)
+                goto efault;
+            ret = get_errno(vmsplice(arg1, vec, count, arg4));
+            unlock_iovec(vec, arg2, count, 0);
+        }
+        break;
+#endif
     default:
     unimplemented:
         gemu_log("qemu: Unsupported syscall: %d\n", num);
-- 
1.6.0