[Qemu-devel] [PATCH] Add fadvise64 stubs

["Kirill A. Shutemov" <kirill@shutemov.name>]

Since these are only hints, we happily fake them for now
to make applications not barf on ENOSYS.

Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
---
 linux-user/syscall.c |   21 +++++++++++++++++++++
 1 files changed, 21 insertions(+), 0 deletions(-)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 489f632..f9aab47 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -5572,6 +5572,27 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
     case TARGET_NR_mincore:
         goto unimplemented;
 #endif
+#ifdef TARGET_NR_arm_fadvise64_64
+    case TARGET_NR_arm_fadvise64_64:
+	{
+		/*
+		 * arm_fadvise64_64 looks like fadvise64_64 but
+		 * with different argument order
+		 */
+		abi_long temp;
+		temp = arg3;
+		arg3 = arg4;
+		arg4 = temp;
+	}
+#endif
+#if defined(TARGET_NR_fadvise64_64) || defined(TARGET_NR_arm_fadvise64_64)
+#ifdef TARGET_NR_fadvise64_64
+    case TARGET_NR_fadvise64_64:
+#endif
+        /* This is a hint, so ignoring and returning success is ok.  */
+	ret = get_errno(0);
+	break;
+#endif
 #ifdef TARGET_NR_madvise
     case TARGET_NR_madvise:
         /* A straight passthrough may not be safe because qemu sometimes
-- 
1.5.6.5.GIT