Imported from /home/lorry/working-area/delta_ntp/ntp-dev-4.2.7p482.tar.gz.ntp-dev-4.2.7p482

1 files changed, 129 insertions, 0 deletions

diff --git a/lib/isc/unix/stdio.c b/lib/isc/unix/stdio.c
new file mode 100644
index 0000000..360c8c6
--- /dev/null
+++ b/lib/isc/unix/stdio.c
@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2004, 2007, 2011, 2012  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 2000, 2001  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id$ */
+
+#include <config.h>
+
+#include <errno.h>
+#include <unistd.h>
+
+#include <isc/stdio.h>
+#include <isc/stat.h>
+
+#include "errno2result.h"
+
+isc_result_t
+isc_stdio_open(const char *filename, const char *mode, FILE **fp) {
+	FILE *f;
+
+	f = fopen(filename, mode);
+	if (f == NULL)
+		return (isc__errno2result(errno));
+	*fp = f;
+	return (ISC_R_SUCCESS);
+}
+
+isc_result_t
+isc_stdio_close(FILE *f) {
+	int r;
+
+	r = fclose(f);
+	if (r == 0)
+		return (ISC_R_SUCCESS);
+	else
+		return (isc__errno2result(errno));
+}
+
+isc_result_t
+isc_stdio_seek(FILE *f, long offset, int whence) {
+	int r;
+
+	r = fseek(f, offset, whence);
+	if (r == 0)
+		return (ISC_R_SUCCESS);
+	else
+		return (isc__errno2result(errno));
+}
+
+isc_result_t
+isc_stdio_read(void *ptr, size_t size, size_t nmemb, FILE *f, size_t *nret) {
+	isc_result_t result = ISC_R_SUCCESS;
+	size_t r;
+
+	clearerr(f);
+	r = fread(ptr, size, nmemb, f);
+	if (r != nmemb) {
+		if (feof(f))
+			result = ISC_R_EOF;
+		else
+			result = isc__errno2result(errno);
+	}
+	if (nret != NULL)
+		*nret = r;
+	return (result);
+}
+
+isc_result_t
+isc_stdio_write(const void *ptr, size_t size, size_t nmemb, FILE *f,
+	       size_t *nret)
+{
+	isc_result_t result = ISC_R_SUCCESS;
+	size_t r;
+
+	clearerr(f);
+	r = fwrite(ptr, size, nmemb, f);
+	if (r != nmemb)
+		result = isc__errno2result(errno);
+	if (nret != NULL)
+		*nret = r;
+	return (result);
+}
+
+isc_result_t
+isc_stdio_flush(FILE *f) {
+	int r;
+
+	r = fflush(f);
+	if (r == 0)
+		return (ISC_R_SUCCESS);
+	else
+		return (isc__errno2result(errno));
+}
+
+/*
+ * OpenBSD has deprecated ENOTSUP in favor of EOPNOTSUPP.
+ */
+#if defined(EOPNOTSUPP) && !defined(ENOTSUP)
+#define ENOTSUP EOPNOTSUPP
+#endif
+
+isc_result_t
+isc_stdio_sync(FILE *f) {
+	int r;
+
+	r = fsync(fileno(f));
+	/*
+	 * fsync is not supported on sockets and pipes which
+	 * result in EINVAL / ENOTSUP.
+	 */
+	if (r == 0 || errno == EINVAL || errno == ENOTSUP)
+		return (ISC_R_SUCCESS);
+	else
+		return (isc__errno2result(errno));
+}
+