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-rw-r--r--posix/unistd.h11
1 files changed, 9 insertions, 2 deletions
diff --git a/posix/unistd.h b/posix/unistd.h
index fa28d94d1e..d56c56d45a 100644
--- a/posix/unistd.h
+++ b/posix/unistd.h
@@ -198,7 +198,7 @@ typedef __ssize_t ssize_t;
#define __need_NULL
#include <stddef.h>
-#ifdef __USE_UNIX98
+#ifdef __USE_XOPEN
/* The Single Unix specification says that some more types are
available here. */
# ifndef gid_t
@@ -228,7 +228,9 @@ typedef __off64_t off64_t;
typedef __pid_t pid_t;
# define pid_t pid_t
# endif
+#endif /* X/Open */
+#ifdef __USE_UNIX98
# ifndef intptr_t
typedef __intptr_t intptr_t;
# define intptr_t intptr_t
@@ -1055,7 +1057,7 @@ extern void swab __P ((__const __ptr_t __from, __ptr_t __to, ssize_t __n));
/* The Single Unix specification, version 2, demands these prototypes
to be here. They are also found in <stdio.h>. */
-#ifdef __USE_UNIX98
+#ifdef __USE_XOPEN
/* Return the name of the controlling terminal. */
extern char *ctermid __P ((char *__s));
@@ -1063,7 +1065,12 @@ extern char *ctermid __P ((char *__s));
used and might go away some time. */
extern char *cuserid __P ((char *__s));
+/* Rename file OLD to NEW. */
+extern int rename __P ((__const char *__old, __const char *__new));
+#endif
+
+#if defined __USE_POSIX199309 || defined __USE_UNIX98
/* This function is only available if the system has POSIX threads. */
/* Install handlers to be called when a new process is created with FORK.