syscall overhaul part two - unify public and internal syscall interface

with this patch, the syscallN() functions are no longer needed; a
variadic syscall() macro allows syscalls with anywhere from 0 to 6
arguments to be made with a single macro name. also, manually casting
each non-integer argument with (long) is no longer necessary; the
casts are hidden in the macros.

some source files which depended on being able to define the old macro
SYSCALL_RETURNS_ERRNO have been modified to directly use __syscall()
instead of syscall(). references to SYSCALL_SIGSET_SIZE and SYSCALL_LL
have also been changed.

x86_64 has not been tested, and may need a follow-up commit to fix any
minor bugs/oversights.

1 files changed, 5 insertions, 2 deletions

diff --git a/arch/x86_64/bits/fcntl.h b/arch/x86_64/bits/fcntl.h
index 802c3d14..2487a308 100644
--- a/arch/x86_64/bits/fcntl.h
+++ b/arch/x86_64/bits/fcntl.h
@@ -14,12 +14,15 @@
 #define O_NOFOLLOW  0400000
 #define O_CLOEXEC  02000000
 
-#ifdef _GNU_SOURCE
-#define O_NDELAY O_NONBLOCK
+/* Extensions, but in the reserved namespace, so OK */
 #define O_ASYNC      020000
 #define O_DIRECT     040000
+#define O_LARGEFILE       0
 #define O_NOATIME  01000000
+#define O_NDELAY O_NONBLOCK
 #define F_DUPFD_CLOEXEC 1030
+
+#ifdef _GNU_SOURCE
 #define FAPPENT O_APPEND
 #define FFSYNC O_FSYNC
 #define FASYNC O_ASYNC