*
* You should have received a copy of the GNU Lesser General Public
* License along with the GNU C Library; if not, see
- * <http://www.gnu.org/licenses/>.
+ * <http://www.gnu.org/licenses/>.
*/
/* adapted for Quagga from glibc patch submission originally from
* Florian Weimer <fweimer@redhat.com>, 2016-05-18 */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
#include <stdint.h>
#include <string.h>
-#include "config.h"
-
#ifndef HAVE_STRLCAT
#undef strlcat
-size_t
-strlcat (char *__restrict dest, const char *__restrict src, size_t size);
+size_t strlcat(char *__restrict dest,
+ const char *__restrict src, size_t destsize);
-size_t
-strlcat (char *__restrict dest, const char *__restrict src, size_t size)
+size_t strlcat(char *__restrict dest,
+ const char *__restrict src, size_t destsize)
{
- size_t src_length = strlen (src);
+ size_t src_length = strlen(src);
- /* Our implementation strlcat supports dest == NULL if size == 0
- (for consistency with snprintf and strlcpy), but strnlen does
- not, so we have to cover this case explicitly. */
- if (size == 0)
- return src_length;
+ /* Our implementation strlcat supports dest == NULL if size == 0
+ (for consistency with snprintf and strlcpy), but strnlen does
+ not, so we have to cover this case explicitly. */
+ if (destsize == 0)
+ return src_length;
- size_t dest_length = strnlen (dest, size);
- if (dest_length != size)
- {
- /* Copy at most the remaining number of characters in the
- destination buffer. Leave for the NUL terminator. */
- size_t to_copy = size - dest_length - 1;
- /* But not more than what is available in the source string. */
- if (to_copy > src_length)
- to_copy = src_length;
+ size_t dest_length = strnlen(dest, destsize);
+ if (dest_length != destsize) {
+ /* Copy at most the remaining number of characters in the
+ destination buffer. Leave for the NUL terminator. */
+ size_t to_copy = destsize - dest_length - 1;
+ /* But not more than what is available in the source string. */
+ if (to_copy > src_length)
+ to_copy = src_length;
- char *target = dest + dest_length;
- memcpy (target, src, to_copy);
- target[to_copy] = '\0';
- }
+ char *target = dest + dest_length;
+ memcpy(target, src, to_copy);
+ target[to_copy] = '\0';
+ }
- /* If the sum wraps around, we have more than SIZE_MAX + 2 bytes in
- the two input strings (including both null terminators). If each
- byte in the address space can be assigned a unique size_t value
- (which the static_assert checks), then by the pigeonhole
- principle, the two input strings must overlap, which is
- undefined. */
+/* If the sum wraps around, we have more than SIZE_MAX + 2 bytes in
+ the two input strings (including both null terminators). If each
+ byte in the address space can be assigned a unique size_t value
+ (which the static_assert checks), then by the pigeonhole
+ principle, the two input strings must overlap, which is
+ undefined. */
#if __STDC_VERSION__ >= 201112L
- _Static_assert (sizeof (uintptr_t) == sizeof (size_t),
- "theoretical maximum object size covers address space");
+ _Static_assert(sizeof(uintptr_t) == sizeof(size_t),
+ "theoretical maximum object size covers address space");
#endif
- return dest_length + src_length;
+ return dest_length + src_length;
}
#endif /* HAVE_STRLCAT */