This commit was generated by cvs2svn to compensate for changes in r1815,

[bootcd.git] / syslinux / com32 / lib / sys / close.c

diff --git a/syslinux/com32/lib/sys/close.c b/syslinux/com32/lib/sys/close.c
new file mode 100644 (file)
index 0000000..00f1ce0
--- /dev/null
+++ b/syslinux/com32/lib/sys/close.c
@@ -0,0 +1,62 @@
+#ident "$Id: close.c,v 1.4 2004/11/23 23:43:02 hpa Exp $"
+/* ----------------------------------------------------------------------- *
+ *   
+ *   Copyright 2004 H. Peter Anvin - All Rights Reserved
+ *
+ *   Permission is hereby granted, free of charge, to any person
+ *   obtaining a copy of this software and associated documentation
+ *   files (the "Software"), to deal in the Software without
+ *   restriction, including without limitation the rights to use,
+ *   copy, modify, merge, publish, distribute, sublicense, and/or
+ *   sell copies of the Software, and to permit persons to whom
+ *   the Software is furnished to do so, subject to the following
+ *   conditions:
+ *   
+ *   The above copyright notice and this permission notice shall
+ *   be included in all copies or substantial portions of the Software.
+ *   
+ *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ *   OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *   NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ *   HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ *   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ *   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ *   OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * close.c
+ */
+
+#include <errno.h>
+#include <com32.h>
+#include <string.h>
+#include "file.h"
+
+int close(int fd)
+{
+  struct file_info *fp = &__file_info[fd];
+  int rv = 0;
+
+  if ( fd >= NFILES || !fp->iop || !fp->oop ) {
+    errno = EBADF;
+    return -1;
+  }
+
+  if ( fp->iop->close ) {
+    rv = fp->iop->close(fp);
+    if ( rv )
+      return rv;
+  }
+  
+  if ( fp->oop->close ) {
+    rv = fp->oop->close(fp);
+    if ( rv )
+      return rv;
+  }
+  
+  memset(fp, 0, sizeof *fp);   /* File structure unused */
+  return 0;
+}