common: compile libcommon as C++

[lttng-tools.git] / src / common / readwrite.c

diff --git a/src/common/readwrite.c b/src/common/readwrite.c
deleted file mode 100644 (file)
index 14ec171..0000000
--- a/src/common/readwrite.c
+++ /dev/null
@@ -1,96 +0,0 @@
-/*
- * Copyright (C) 2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * SPDX-License-Identifier: LGPL-2.1-only
- *
- */
-
-#define _LGPL_SOURCE
-#include <limits.h>
-#include <unistd.h>
-
-#include <common/compat/errno.h>
-
-#include "readwrite.h"
-
-/*
- * lttng_read and lttng_write take care of EINTR and partial read/write.
- * Upon success, they return the "count" received as parameter.
- * They can return a negative value if an error occurs.
- * If a value lower than the requested "count" is returned, it means an
- * error occurred.
- * The error can be checked by querying errno.
- */
-ssize_t lttng_read(int fd, void *buf, size_t count)
-{
-       size_t i = 0;
-       ssize_t ret;
-
-       LTTNG_ASSERT(buf);
-
-       /*
-        * Deny a read count that can be bigger then the returned value max size.
-        * This makes the function to never return an overflow value.
-        */
-       if (count > SSIZE_MAX) {
-               return -EINVAL;
-       }
-
-       do {
-               ret = read(fd, buf + i, count - i);
-               if (ret < 0) {
-                       if (errno == EINTR) {
-                               continue;       /* retry operation */
-                       } else {
-                               goto error;
-                       }
-               }
-               i += ret;
-               LTTNG_ASSERT(i <= count);
-       } while (count - i > 0 && ret > 0);
-       return i;
-
-error:
-       if (i == 0) {
-               return -1;
-       } else {
-               return i;
-       }
-}
-
-ssize_t lttng_write(int fd, const void *buf, size_t count)
-{
-       size_t i = 0;
-       ssize_t ret;
-
-       LTTNG_ASSERT(buf);
-
-       /*
-        * Deny a write count that can be bigger then the returned value max size.
-        * This makes the function to never return an overflow value.
-        */
-       if (count > SSIZE_MAX) {
-               return -EINVAL;
-       }
-
-       do {
-               ret = write(fd, buf + i, count - i);
-               if (ret < 0) {
-                       if (errno == EINTR) {
-                               continue;       /* retry operation */
-                       } else {
-                               goto error;
-                       }
-               }
-               i += ret;
-               LTTNG_ASSERT(i <= count);
-       } while (count - i > 0 && ret > 0);
-       return i;
-
-error:
-       if (i == 0) {
-               return -1;
-       } else {
-               return i;
-       }
-}