strlcpy.c - sdhcp - simple dhcp client
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       ---
       strlcpy.c (966B)
       ---
            1 /* Taken from OpenBSD */
            2 #include <sys/types.h>
            3 #include <string.h>
            4 #include "../util.h"
            5 
            6 /*
            7  * Copy src to string dst of size siz.  At most siz-1 characters
            8  * will be copied.  Always NUL terminates (unless siz == 0).
            9  * Returns strlen(src); if retval >= siz, truncation occurred.
           10  */
           11 size_t
           12 strlcpy(char *dst, const char *src, size_t siz)
           13 {
           14         char *d = dst;
           15         const char *s = src;
           16         size_t n = siz;
           17         /* Copy as many bytes as will fit */
           18         if (n != 0) {
           19                 while (--n != 0) {
           20                         if ((*d++ = *s++) == '\0')
           21                                 break;
           22                 }
           23         }
           24         /* Not enough room in dst, add NUL and traverse rest of src */
           25         if (n == 0) {
           26                 if (siz != 0)
           27                         *d = '\0';              /* NUL-terminate dst */
           28                 while (*s++)
           29                         ;
           30         }
           31         return(s - src - 1);    /* count does not include NUL */
           32 }