adjust ioprio_get/set for kernels which don't define _syscall2/3 (i.e. 2.6.24 and higher)

1 files changed, 16 insertions, 0 deletions

diff --git a/lib/base/ioprio.cpp b/lib/base/ioprio.cpp
index 63e6ff48..fb257401 100644
--- a/lib/base/ioprio.cpp
+++ b/lib/base/ioprio.cpp
@@ -31,9 +31,25 @@ extern "C" int sys_ioprio_get(int, int);
 #error "Unsupported arch"
 #endif
 
+#if defined(_syscall3) && defined(_syscall2)
+
 _syscall3(int, ioprio_set, int, which, int, who, int, ioprio);
 _syscall2(int, ioprio_get, int, which, int, who);
 
+#else
+
+static inline int ioprio_set(int which, int who, int ioprio)
+{
+	return syscall(__NR_ioprio_set, which, who, ioprio);
+}
+
+static inline int ioprio_get(int which, int who)
+{
+	return syscall(__NR_ioprio_get, which, who);
+}
+
+#endif
+
 #define IOPRIO_CLASS_SHIFT	13
 
 enum {