1 files changed, 67 insertions, 0 deletions
diff --git a/contrib/sendmail/libsm/fwrite.c b/contrib/sendmail/libsm/fwrite.c
new file mode 100644
index 0000000..372f75d
--- /dev/null
+++ b/contrib/sendmail/libsm/fwrite.c
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2000-2001 Sendmail, Inc. and its suppliers.
+ *      All rights reserved.
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * By using this file, you agree to the terms and conditions set
+ * forth in the LICENSE file which can be found at the top level of
+ * the sendmail distribution.
+ */
+
+#include <sm/gen.h>
+SM_RCSID("@(#)$Id: fwrite.c,v 1.24 2001/09/11 04:04:48 gshapiro Exp $")
+#include <errno.h>
+#include <sm/io.h>
+#include <sm/assert.h>
+#include "local.h"
+#include "fvwrite.h"
+
+/*
+**  SM_IO_WRITE -- write to a file pointer
+**
+**	Parameters:
+**		fp -- file pointer writing to
+**		timeout -- time to complete the write
+**		buf -- location of data to be written
+**		size -- number of bytes to be written
+**
+**	Result:
+**		Failure: returns 0 _and_ sets errno
+**		Success: returns >=0 with errno unchanged, where the
+**			number returned is the number of bytes written.
+*/
+
+size_t
+sm_io_write(fp, timeout, buf, size)
+	SM_FILE_T *fp;
+	int timeout;
+	const void *buf;
+	size_t size;
+{
+	struct sm_uio uio;
+	struct sm_iov iov;
+
+	SM_REQUIRE_ISA(fp, SmFileMagic);
+
+	if (fp->f_write == NULL)
+	{
+		errno = ENODEV;
+		return 0;
+	}
+
+	iov.iov_base = (void *) buf;
+	uio.uio_resid = iov.iov_len = size;
+	uio.uio_iov = &iov;
+	uio.uio_iovcnt = 1;
+
+	/* The usual case is success (sm_fvwrite returns 0) */
+	if (sm_fvwrite(fp, timeout, &uio) == 0)
+		return size;
+
+	/* else return number of bytes actually written */
+	return size - uio.uio_resid;
+}