1 files changed, 84 insertions, 0 deletions
diff --git a/StdLib/Include/sys/EfiSysCall.h b/StdLib/Include/sys/EfiSysCall.h
new file mode 100644
index 0000000000..14ecb49890
--- /dev/null
+++ b/StdLib/Include/sys/EfiSysCall.h
@@ -0,0 +1,84 @@
+/** @file
+  Function declarations for UEFI "system calls".
+
+  Concept derived from NetBSD's unistd.h file.
+
+  Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
+  This program and the accompanying materials are licensed and made available under
+  the terms and conditions of the BSD License that accompanies this distribution.
+  The full text of the license may be found at
+  http://opensource.org/licenses/bsd-license.php.
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+#ifndef _EFI_SYS_CALL_H
+#define _EFI_SYS_CALL_H
+
+#include  <sys/EfiCdefs.h>
+#include  <sys/types.h>
+
+struct stat;  // Structure declared in <sys/stat.h>
+
+#define STDIN_FILENO  0 /* standard input file descriptor */
+#define STDOUT_FILENO 1 /* standard output file descriptor */
+#define STDERR_FILENO 2 /* standard error file descriptor */
+
+/* access function */
+#define F_OK       0  /* test for existence of file */
+#define X_OK    0x01  /* test for execute or search permission */
+#define W_OK    0x02  /* test for write permission */
+#define R_OK    0x04  /* test for read permission */
+
+/* whence values for lseek(2) */
+#define SEEK_SET  0 /* set file offset to offset */
+#define SEEK_CUR  1 /* set file offset to current plus offset */
+#define SEEK_END  2 /* set file offset to EOF plus offset */
+
+__BEGIN_DECLS
+
+/* EFI versions of BSD system calls used in stdio */
+extern int      close     (int fd);
+extern ssize_t  read      (int fd, void *buf, size_t n);
+extern ssize_t  write     (int fd, const void *buf, size_t n);
+extern int      unlink    (const char *name);
+extern int      dup2      (int, int);
+extern int      rmdir     (const char *);
+extern int      isatty    (int);
+
+/* These system calls are also declared in sys/fcntl.h */
+#ifndef __FCNTL_SYSCALLS_DECLARED
+  #define __FCNTL_SYSCALLS_DECLARED
+  extern int      open      (const char *name, int oflags, int mode);
+  extern int      creat     (const char *, mode_t);
+  extern int      fcntl     (int, int, ...);
+#endif  // __FCNTL_SYSCALLS_DECLARED
+
+/* These system calls are also declared in stat.h */
+#ifndef __STAT_SYSCALLS_DECLARED
+  #define __STAT_SYSCALLS_DECLARED
+  extern int      mkdir     (const char *, mode_t);
+  extern int      fstat     (int, struct stat *);
+  extern int      lstat     (const char *, struct stat *);
+  extern int      stat      (const char *, void *);
+//  extern int      chmod     (const char *, mode_t);
+#endif  // __STAT_SYSCALLS_DECLARED
+
+// These are also declared in sys/types.h
+#ifndef __OFF_T_SYSCALLS_DECLARED
+  #define __OFF_T_SYSCALLS_DECLARED
+  extern off_t    lseek     (int, off_t, int);
+  extern int      truncate  (const char *, off_t);
+  extern int      ftruncate (int, off_t);   //  IEEE Std 1003.1b-93
+#endif /* __OFF_T_SYSCALLS_DECLARED */
+
+/* These system calls don't YET have EFI implementations. */
+extern int      access    (const char *path, int amode);
+extern int      chdir     (const char *);
+extern char    *getcwd    (char *, size_t);
+extern int      reboot    (int, char *);
+
+__END_DECLS
+
+#endif  /* _EFI_SYS_CALL_H */