/* Substitute for and wrapper around <unistd.h>.
- Copyright (C) 2003-2009 Free Software Foundation, Inc.
+ Copyright (C) 2003-2010 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
# include <io.h>
#endif
-#if ((@GNULIB_WRITE@ && @REPLACE_WRITE@ && @GNULIB_UNISTD_H_SIGPIPE@) \
- || (@GNULIB_READLINK@ && (!@HAVE_READLINK@ || @REPLACE_READLINK@)) \
- || (@GNULIB_READLINKAT@ && !@HAVE_READLINKAT@) \
- || defined GNULIB_POSIXCHECK)
+#if (@GNULIB_WRITE@ || @GNULIB_READLINK@ || @GNULIB_READLINKAT@ \
+ || @GNULIB_PREAD@ || defined GNULIB_POSIXCHECK)
/* Get ssize_t. */
# include <sys/types.h>
#endif
#endif
+#if @GNULIB_GETLOGIN@
+/* Returns the user's login name, or NULL if it cannot be found. Upon error,
+ returns NULL with errno set.
+
+ See <http://www.opengroup.org/susv3xsh/getlogin.html>.
+
+ Most programs don't need to use this function, because the information is
+ available through environment variables:
+ ${LOGNAME-$USER} on Unix platforms,
+ $USERNAME on native Windows platforms.
+ */
+# if !@HAVE_GETLOGIN@
+extern char *getlogin (void);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef getlogin
+# define getlogin() \
+ (GL_LINK_WARNING ("getlogin is unportable - " \
+ "use gnulib module getlogin for portability"), \
+ getlogin ())
+#endif
+
+
#if @GNULIB_GETLOGIN_R@
/* Copies the user's login name to NAME.
The array pointed to by NAME has room for SIZE bytes.
provided (this case is hopefully rare but is left open by the POSIX spec).
See <http://www.opengroup.org/susv3xsh/getlogin.html>.
+
+ Most programs don't need to use this function, because the information is
+ available through environment variables:
+ ${LOGNAME-$USER} on Unix platforms,
+ $USERNAME on native Windows platforms.
*/
# if !@HAVE_DECL_GETLOGIN_R@
extern int getlogin_r (char *name, size_t size) _GL_ARG_NONNULL ((1));
# endif
#elif defined GNULIB_POSIXCHECK
# undef linkat
-# define link(f1,path1,f2,path2,f) \
+# define linkat(f1,path1,f2,path2,f) \
(GL_LINK_WARNING ("linkat is unportable - " \
"use gnulib module linkat for portability"), \
linkat (f1, path1, f2, path2,f))