kernel/lib/libc/string/strncat.c

// Copyright 2016 The Fuchsia Authors
// Copyright (c) 2008 Travis Geiselbrecht
//
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file or at
// https://opensource.org/licenses/MIT

#include <string.h>
#include <sys/types.h>

char *
strncat(char *dest, char const *src, size_t count)
{
    char *tmp = dest;

    if (count > 0) {
        while (*dest)
            dest++;
        while ((*dest++ = *src++)) {
            if (--count == 0) {
                *dest = '\0';
                break;
            }
        }
    }

    return tmp;
}