ref: a33d76f8c95d33d6590dd185a2200f06cef014c7
dir: /sys/src/libc/port/strncpy.c/
#include <u.h> #include <libc.h> char* strncpy(char *s1, char *s2, long n) { int i; char *os1; os1 = s1; for(i = 0; i < n; i++) if((*s1++ = *s2++) == 0) { while(++i < n) *s1++ = 0; return os1; } return os1; }