Add fseeko/ftello using fsetpos/fgetpos for BSD/OS.

1 files changed, 76 insertions, 0 deletions

diff --git a/src/port/fseeko.c b/src/port/fseeko.c
new file mode 100644
index 00000000000..22aa80c98dd
--- /dev/null
+++ b/src/port/fseeko.c
@@ -0,0 +1,76 @@
+/*-------------------------------------------------------------------------
+ *
+ * fseeko.c
+ *	  64-bit versions of fseeko/ftello()
+ *
+ * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ *
+ * IDENTIFICATION
+ *	  $Header: /cvsroot/pgsql/src/port/fseeko.c,v 1.1 2002/10/23 20:56:24 momjian Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#ifdef __bsdi__
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <errno.h>
+
+/*
+ *	On BSD/OS, off_t and fpos_t are the same.  Standards say
+ *	off_t is an arithmetic type, but not necessarily integral,
+ *	while fpos_t might be neither.
+ *
+ *	I don't think this is thread-safe.
+ */
+
+int
+fseeko(FILE *stream, off_t offset, int whence)
+{
+	off_t floc;
+	struct stat filestat;
+
+	switch (whence)
+	{
+		case SEEK_CUR:
+			if (fgetpos(stream, &floc) != 0)
+				return -1;
+			floc += offset;
+			if (fsetpos(stream, &floc) != 0)
+				return -1;
+			return 0;
+			break;
+		case SEEK_SET:
+			if (fsetpos(stream, &offset) != 0)
+				return -1;
+			return 0;
+			break;
+		case SEEK_END:
+			if (fstat(fileno(stream), &filestat) != 0)
+				return -1;
+			floc = filestat.st_size;
+			if (fsetpos(stream, &floc) != 0)
+				return -1;
+			return 0;
+			break;
+		default:
+			errno =	EINVAL;
+			return -1;
+	}
+}
+
+
+off_t
+ftello(FILE *stream)
+{
+	off_t floc;
+
+	if (fgetpos(stream, &floc) != 0)
+		return -1;
+	return floc;
+}
+#endif