doc: add Meson coding style to contributors guide

[dpdk.git] / lib / librte_eal / common / eal_common_string_fns.c

diff --git a/lib/librte_eal/common/eal_common_string_fns.c b/lib/librte_eal/common/eal_common_string_fns.c
index fb0bbe8..60c5dd6 100644 (file)
--- a/lib/librte_eal/common/eal_common_string_fns.c
+++ b/lib/librte_eal/common/eal_common_string_fns.c
@@ -1,34 +1,5 @@
-/*-
- *   BSD LICENSE
- *
- *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- *   All rights reserved.
- *
- *   Redistribution and use in source and binary forms, with or without
- *   modification, are permitted provided that the following conditions
- *   are met:
- *
- *     * Redistributions of source code must retain the above copyright
- *       notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above copyright
- *       notice, this list of conditions and the following disclaimer in
- *       the documentation and/or other materials provided with the
- *       distribution.
- *     * Neither the name of Intel Corporation nor the names of its
- *       contributors may be used to endorse or promote products derived
- *       from this software without specific prior written permission.
- *
- *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
  */
 
 #include <string.h>
@@ -38,34 +9,6 @@
 
 #include <rte_string_fns.h>
 
-/* safe version os snprintf */
-int
-rte_snprintf(char *buffer, int buflen, const char *format, ...)
-{
-       int len;
-       va_list ap;
-
-       if (buffer == NULL && buflen != 0)
-               goto einval_error;
-       if (format == NULL) {
-               if (buflen > 0)
-                       buffer[0] = '\0';
-               goto einval_error;
-       }
-
-       va_start(ap, format);
-       len = vsnprintf(buffer, buflen, format, ap);
-       va_end(ap);
-       if (len >= buflen && buflen > 0)
-               buffer[buflen - 1] = '\0';
-
-       return len;
-
-einval_error:
-       errno = EINVAL;
-       return -1;
-}
-
 /* split string into tokens */
 int
 rte_strsplit(char *string, int stringlen,
@@ -95,3 +38,29 @@ einval_error:
        errno = EINVAL;
        return -1;
 }
+
+/* Copy src string into dst.
+ *
+ * Return negative value and NUL-terminate if dst is too short,
+ * Otherwise return number of bytes copied.
+ */
+ssize_t
+rte_strscpy(char *dst, const char *src, size_t dsize)
+{
+       size_t nleft = dsize;
+       size_t res = 0;
+
+       /* Copy as many bytes as will fit. */
+       while (nleft != 0) {
+               dst[res] = src[res];
+               if (src[res] == '\0')
+                       return res;
+               res++;
+               nleft--;
+       }
+
+       /* Not enough room in dst, set NUL and return error. */
+       if (res != 0)
+               dst[res - 1] = '\0';
+       return -E2BIG;
+}