ref: 607319bed9f2d7f2ea7ff107ebf51de6c27396d7
dir: /libnpe/setenv.c/
#include <u.h>
#include <libc.h>
int
setenv(char *name, char *value, int overwrite)
{
char *s;
if(overwrite == 0 && (s = getenv(name)) != nil){
free(s);
return 0;
}
return putenv(name, value);
}