From 035367578f7afc08160014c1ab11eeb627a88f31 Mon Sep 17 00:00:00 2001
From: Christopher Faylor <me@cgf.cx>
Date: Fri, 25 Jul 2003 16:06:01 +0000
Subject: * libc/stdio64/fdopen64.c: New file. * libc/stdio64/Makefile.am
 (LIB_OBJS): Add fdopen64.o * libc/stdio64/Makefile.in: Regenerate. *
 libc/include/stdio.h (fdopen64): Define. * libc/include/stdio.h
 (_fdopen64_r): Ditto.

---
 newlib/libc/stdio64/fdopen64.c | 120 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 120 insertions(+)
 create mode 100644 newlib/libc/stdio64/fdopen64.c

(limited to 'newlib/libc/stdio64/fdopen64.c')

diff --git a/newlib/libc/stdio64/fdopen64.c b/newlib/libc/stdio64/fdopen64.c
new file mode 100644
index 000000000..96c76411f
--- /dev/null
+++ b/newlib/libc/stdio64/fdopen64.c
@@ -0,0 +1,120 @@
+/*
+FUNCTION
+<<fdopen64>>---turn open file into a stream
+
+INDEX
+	fdopen64
+INDEX
+	_fdopen64_r
+
+SYNOPSIS
+	#include <stdio.h>
+	FILE *fdopen64(int <[fd]>, const char *<[mode]>);
+	FILE *_fdopen64_r(void *<[reent]>,
+                     int <[fd]>, const char *<[mode]>);
+
+DESCRIPTION
+<<fdopen64>> produces a file descriptor of type <<FILE *>>, from a
+descriptor for an already-open file (returned, for example, by the
+system subroutine <<open>> rather than by <<fopen>>).
+The <[mode]> argument has the same meanings as in <<fopen>>.
+
+RETURNS
+File pointer or <<NULL>>, as for <<fopen>>.
+*/
+
+#include <sys/types.h>
+#include <sys/fcntl.h>
+
+#include <stdio.h>
+#include <errno.h>
+#include "local64.h"
+#include <_syslist.h>
+
+extern int __sflags ();
+
+FILE *
+_DEFUN (_fdopen64_r, (ptr, fd, mode),
+	struct _reent *ptr _AND
+	int fd _AND
+	_CONST char *mode)
+{
+  register FILE *fp;
+  int flags, oflags;
+#ifdef HAVE_FCNTL
+  int fdflags, fdmode;
+#endif
+
+  if ((flags = __sflags (ptr, mode, &oflags)) == 0)
+    return 0;
+
+  /* make sure the mode the user wants is a subset of the actual mode */
+#ifdef HAVE_FCNTL
+  if ((fdflags = _fcntl_r (ptr, fd, F_GETFL, 0)) < 0)
+    return 0;
+  fdmode = fdflags & O_ACCMODE;
+  if (fdmode != O_RDWR && (fdmode != (oflags & O_ACCMODE)))
+    {
+      ptr->_errno = EBADF;
+      return 0;
+    }
+#endif
+
+  if ((fp = __sfp (ptr)) == 0)
+    return 0;
+  fp->_flags = flags;
+  /*
+   * If opened for appending, but underlying descriptor
+   * does not have O_APPEND bit set, assert __SAPP so that
+   * __swrite() will lseek to end before each write.
+   */
+  if ((oflags & O_APPEND)
+#ifdef HAVE_FCNTL
+       && !(fdflags & O_APPEND)
+#endif
+      )
+    fp->_flags |= __SAPP;
+  fp->_file = fd;
+  fp->_cookie = (_PTR) fp;
+
+#undef _read
+#undef _write
+#undef _seek
+#undef _close
+
+  fp->_read = __sread;
+  fp->_write = __swrite64;
+  fp->_seek = __sseek;
+  fp->_seek64 = __sseek64;
+  fp->_close = __sclose;
+
+#ifdef __SCLE
+  /* Explicit given mode results in explicit setting mode on fd */
+  if (oflags & O_BINARY)
+    setmode(fp->_file, O_BINARY);
+  else if (oflags & O_TEXT)
+    setmode(fp->_file, O_TEXT);
+  if (__stextmode(fp->_file))
+    fp->_flags |= __SCLE;
+#endif
+
+#ifndef __SINGLE_THREAD__
+  __lock_init_recursive (*(_LOCK_RECURSIVE_T *)&fp->_lock);
+#endif
+
+  fp->_flags |= __SL64;
+
+  return fp;
+}
+
+#ifndef _REENT_ONLY
+
+FILE *
+_DEFUN (fdopen64, (fd, mode),
+	int fd _AND
+	_CONST char *mode)
+{
+  return _fdopen64_r (_REENT, fd, mode);
+}
+
+#endif
-- 
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