1#include <unistd.h> 2#include <stdio.h> 3#include <errno.h> 4 5size_t confstr(int name, char *buf, size_t len) 6{ 7 const char *s = ""; 8 if (!name) { 9 s = "/bin:/usr/bin"; 10 } else if ((name&~4U)!=1 && name-_CS_POSIX_V6_ILP32_OFF32_CFLAGS>33U) { 11 errno = EINVAL; 12 return 0; 13 } 14 // snprintf is overkill but avoid wasting code size to implement 15 // this completely useless function and its truncation semantics 16 return snprintf(buf, len, "%s", s) + 1; 17} 18