eal: simplify meson build of common directory

[dpdk.git] / lib / librte_eal / common / include / rte_string_fns.h

diff --git a/lib/librte_eal/common/include/rte_string_fns.h b/lib/librte_eal/common/include/rte_string_fns.h
index e97047a..8bac824 100644 (file)
--- a/lib/librte_eal/common/include/rte_string_fns.h
+++ b/lib/librte_eal/common/include/rte_string_fns.h
@@ -1,5 +1,5 @@
 /* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2010-2014 Intel Corporation
+ * Copyright(c) 2010-2019 Intel Corporation
  */
 
 /**
@@ -15,6 +15,11 @@
 extern "C" {
 #endif
 
+#include <stdio.h>
+#include <string.h>
+
+#include <rte_common.h>
+
 /**
  * Takes string "string" parameter and splits it at character "delim"
  * up to maxtokens-1 times - to give "maxtokens" resulting tokens. Like
@@ -45,6 +50,72 @@ int
 rte_strsplit(char *string, int stringlen,
              char **tokens, int maxtokens, char delim);
 
+/**
+ * @internal
+ * DPDK-specific version of strlcpy for systems without
+ * libc or libbsd copies of the function
+ */
+static inline size_t
+rte_strlcpy(char *dst, const char *src, size_t size)
+{
+       return (size_t)snprintf(dst, size, "%s", src);
+}
+
+/**
+ * @internal
+ * DPDK-specific version of strlcat for systems without
+ * libc or libbsd copies of the function
+ */
+static inline size_t
+rte_strlcat(char *dst, const char *src, size_t size)
+{
+       size_t l = strnlen(dst, size);
+       if (l < size)
+               return l + rte_strlcpy(&dst[l], src, size - l);
+       return l + strlen(src);
+}
+
+/* pull in a strlcpy function */
+#ifdef RTE_EXEC_ENV_FREEBSD
+#ifndef __BSD_VISIBLE /* non-standard functions are hidden */
+#define strlcpy(dst, src, size) rte_strlcpy(dst, src, size)
+#define strlcat(dst, src, size) rte_strlcat(dst, src, size)
+#endif
+
+#else /* non-BSD platforms */
+#ifdef RTE_USE_LIBBSD
+#include <bsd/string.h>
+
+#else /* no BSD header files, create own */
+#define strlcpy(dst, src, size) rte_strlcpy(dst, src, size)
+#define strlcat(dst, src, size) rte_strlcat(dst, src, size)
+
+#endif /* RTE_USE_LIBBSD */
+#endif /* FREEBSD */
+
+/**
+ * Copy string src to buffer dst of size dsize.
+ * At most dsize-1 chars will be copied.
+ * Always NUL-terminates, unless (dsize == 0).
+ * Returns number of bytes copied (terminating NUL-byte excluded) on success ;
+ * negative errno on error.
+ *
+ * @param dst
+ *   The destination string.
+ *
+ * @param src
+ *   The input string to be copied.
+ *
+ * @param dsize
+ *   Length in bytes of the destination buffer.
+ *
+ * @return
+ *   The number of bytes copied on success
+ *   -E2BIG if the destination buffer is too small.
+ */
+ssize_t
+rte_strscpy(char *dst, const char *src, size_t dsize);
+
 #ifdef __cplusplus
 }
 #endif