int
getlogin_r (char *name, size_t name_len)
{
size_t len;
if (__getlogin_cache == NULL)
{
if (INLINE_SYSCALL (getlogin, 2, __getlogin_cache_room, MAXLOGNAME) < 0)
return -1;
/* The system call should return a NULL terminated name. */
if (__memchr (__getlogin_cache_room, '\0', MAXLOGNAME) == NULL)
abort ();
__getlogin_cache = __getlogin_cache_room;
}
len = strlen (__getlogin_cache);
if (__builtin_expect (len < name_len, 1))
{
memcpy (name, __getlogin_cache, len + 1);
return 0;
}
else
{
__set_errno (ERANGE);
return -1;
}
}
void *memchr(const void * ptr, int val, size_t len)
{
const unsigned char * m = ptr;
void * result = NULL;
if(ptr == NULL || (signed)len < 1)
{
errno = EFAULT;
}
else
{
result = __memchr(m,(unsigned char)(val & 255),len);
}
return(result);
}
