confstr.c raw

   1  #include <unistd.h>
   2  #include <stdio.h>
   3  #include <errno.h>
   4  
   5  size_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