1 files changed, 91 insertions, 8 deletions
diff --git a/src/syscall.h b/src/syscall.h
index 3b94efc..214789d 100644
--- a/src/syscall.h
+++ b/src/syscall.h
@@ -2,19 +2,102 @@
 #ifndef LIBURING_SYSCALL_H
 #define LIBURING_SYSCALL_H
 
+#include <errno.h>
 #include <signal.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <stdbool.h>
+#include <sys/mman.h>
+#include <sys/syscall.h>
+#include <sys/resource.h>
 
+#include <liburing.h>
+
+#ifdef __alpha__
+/*
+ * alpha and mips are exception, other architectures have
+ * common numbers for new system calls.
+ */
+#ifndef __NR_io_uring_setup
+#define __NR_io_uring_setup		535
+#endif
+#ifndef __NR_io_uring_enter
+#define __NR_io_uring_enter		536
+#endif
+#ifndef __NR_io_uring_register
+#define __NR_io_uring_register	537
+#endif
+#elif defined __mips__
+#ifndef __NR_io_uring_setup
+#define __NR_io_uring_setup		(__NR_Linux + 425)
+#endif
+#ifndef __NR_io_uring_enter
+#define __NR_io_uring_enter		(__NR_Linux + 426)
+#endif
+#ifndef __NR_io_uring_register
+#define __NR_io_uring_register	(__NR_Linux + 427)
+#endif
+#else /* !__alpha__ and !__mips__ */
+#ifndef __NR_io_uring_setup
+#define __NR_io_uring_setup		425
+#endif
+#ifndef __NR_io_uring_enter
+#define __NR_io_uring_enter		426
+#endif
+#ifndef __NR_io_uring_register
+#define __NR_io_uring_register		427
+#endif
+#endif
+
+/*
+ * Don't put this below the #include "arch/$arch/syscall.h", that
+ * file may need it.
+ */
 struct io_uring_params;
 
+static inline void *ERR_PTR(intptr_t n)
+{
+	return (void *) n;
+}
+
+static inline intptr_t PTR_ERR(const void *ptr)
+{
+	return (intptr_t) ptr;
+}
+
+static inline bool IS_ERR(const void *ptr)
+{
+	return uring_unlikely((uintptr_t) ptr >= (uintptr_t) -4095UL);
+}
+
+#define __INTERNAL__LIBURING_SYSCALL_H
+#if defined(__x86_64__) || defined(__i386__)
+#include "arch/x86/syscall.h"
+#elif defined(__aarch64__)
+#include "arch/aarch64/syscall.h"
+#else
+/*
+ * We don't have native syscall wrappers
+ * for this arch. Must use libc!
+ */
+#ifdef CONFIG_NOLIBC
+	#error "This arch doesn't support building liburing without libc"
+#endif
+/* libc syscall wrappers. */
+#include "arch/generic/syscall.h"
+#endif
+#undef __INTERNAL__LIBURING_SYSCALL_H
+
 /*
- * System calls
+ * For backward compatibility.
+ * (these __sys* functions always use libc, see syscall.c)
  */
-extern int __sys_io_uring_setup(unsigned entries, struct io_uring_params *p);
-extern int __sys_io_uring_enter(int fd, unsigned to_submit,
-	unsigned min_complete, unsigned flags, sigset_t *sig);
-extern int __sys_io_uring_enter2(int fd, unsigned to_submit,
-	unsigned min_complete, unsigned flags, sigset_t *sig, int sz);
-extern int __sys_io_uring_register(int fd, unsigned int opcode, const void *arg,
-	unsigned int nr_args);
+int __sys_io_uring_setup(unsigned entries, struct io_uring_params *p);
+int __sys_io_uring_enter(int fd, unsigned to_submit, unsigned min_complete,
+			 unsigned flags, sigset_t *sig);
+int __sys_io_uring_enter2(int fd, unsigned to_submit, unsigned min_complete,
+			  unsigned flags, sigset_t *sig, int sz);
+int __sys_io_uring_register(int fd, unsigned int opcode, const void *arg,
+			    unsigned int nr_args);
 
 #endif