/* Retrieve information about a FILE stream.
- Copyright (C) 2007-2008 Free Software Foundation, Inc.
+ Copyright (C) 2007-2013 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
/* Specification. */
#include "freadable.h"
+#include "stdio-impl.h"
+
+#if defined EPLAN9 /* Plan9 */
+# include <fcntl.h>
+#endif
+
bool
freadable (FILE *fp)
{
/* Most systems provide FILE as a struct and the necessary bitmask in
<stdio.h>, because they need it for implementing getc() and putc() as
fast macros. */
-#if defined _IO_ferror_unlocked /* GNU libc, BeOS */
+#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
return (fp->_flags & _IO_NO_READS) == 0;
-#elif defined __sferror /* FreeBSD, NetBSD, OpenBSD, MacOS X, Cygwin */
- return (fp->_flags & (__SRW | __SRD)) != 0;
-#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw */
-# if defined _SCO_DS /* OpenServer */
-# define _flag __flag
-# endif
+#elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin */
+ return (fp_->_flags & (__SRW | __SRD)) != 0;
+#elif defined __EMX__ /* emx+gcc */
+ return (fp->_flags & (_IORW | _IOREAD)) != 0;
+#elif defined __minix /* Minix */
+ return (fp->_flags & _IOREAD) != 0;
+#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, NonStop Kernel */
return (fp->_flag & (_IORW | _IOREAD)) != 0;
#elif defined __QNX__ /* QNX */
return (fp->_Mode & 0x1 /* _MOPENR */) != 0;
+#elif defined __MINT__ /* Atari FreeMiNT */
+ return fp->__mode.__read;
+#elif defined EPLAN9 /* Plan9 */
+ int fd = fp->fd;
+ if (fd >= 0)
+ {
+ int flags = fcntl (fd, F_GETFL, NULL);
+ if (flags >= 0)
+ {
+ flags &= O_ACCMODE;
+ return (flags == O_RDONLY || flags == O_RDWR);
+ }
+ }
+ return 0;
#else
- #error "Please port gnulib freadable.c to your platform! Look at the definition of fopen, fdopen on your system, then report this to bug-gnulib."
+# error "Please port gnulib freadable.c to your platform! Look at the definition of fopen, fdopen on your system, then report this to bug-gnulib."
#endif
}