about summary refs log tree commit diff
path: root/sysdeps/unix/sysv/linux/sysdep.h
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/unix/sysv/linux/sysdep.h')
-rw-r--r--sysdeps/unix/sysv/linux/sysdep.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/sysdep.h b/sysdeps/unix/sysv/linux/sysdep.h
index a469f57121..e3ecd5638e 100644
--- a/sysdeps/unix/sysv/linux/sysdep.h
+++ b/sysdeps/unix/sysv/linux/sysdep.h
@@ -48,6 +48,16 @@
   __LONG_LONG_PAIR ((long) ((val) >> 32), (long) ((val) & 0xffffffff))
 #endif
 
+/* Provide a common macro to pass 64-bit value on pread and pwrite
+   syscalls.  */
+#ifdef __ASSUME_PRW_DUMMY_ARG
+# define SYSCALL_LL_PRW(val)   0, SYSCALL_LL (val)
+# define SYSCALL_LL64_PRW(val) 0, SYSCALL_LL64 (val)
+#else
+# define SYSCALL_LL_PRW(val)   __ALIGNMENT_ARG SYSCALL_LL (val)
+# define SYSCALL_LL64_PRW(val) __ALIGNMENT_ARG SYSCALL_LL64 (val)
+#endif
+
 /* Provide a macro to pass the off{64}_t argument on p{readv,writev}{64}.  */
 #define LO_HI_LONG(val) \
  (long) (val), \