errno.h

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#ifndef __ERRNO_H__
#define __ERRNO_H__
 
/* The system calls report a failure by returning a negative error number, but
 * the standard library reports one through this variable, and that is where a
 * program that was not written for Tenok looks.
 *
 * It lives in the reentrancy structure of the C library, of which Tenok keeps
 * a single one: two threads that fail at the same time overwrite each other.
 */
#ifndef errno
extern int *__errno(void);
#define errno (*__errno())
#endif
 
#define EPERM 1         
#define ENOENT 2        
#define ESRCH 3         
#define EINTR 4         
#define EIO 5           
#define ENXIO 6         
#define E2BIG 7         
#define EBADF 9         
#define EAGAIN 11       
#define ENOMEM 12       
#define EACCES 13       
#define EFAULT 14       
#define ENOTBLK 15      
#define EBUSY 16        
#define EEXIST 17       
#define EXDEV 18        
#define ENODEV 19       
#define ENOTDIR 20      
#define EISDIR 21       
#define EINVAL 22       
#define ENFILE 23       
#define EMFILE 24       
#define ENOTTY 25       
#define ETXTBSY 26      
#define EFBIG 27        
#define ENOSPC 28       
#define ESPIPE 29       
#define EROFS 30        
#define EPIPE 32        
#define EDEADLK 45      
#define ENOSYS 88       
#define ENOTEMPTY 90    
#define ENAMETOOLONG 91 
#define ETIMEDOUT 116   
#define EMSGSIZE 122    
#define EOVERFLOW 139   
/* Numbers Tenok never returns of its own. They are named so that a program
 * written for a POSIX system compiles, and they follow newlib, which is the
 * library the numbers have to agree with
 */
#define ENOEXEC 8   
#define ECHILD 10   
#define ERANGE 34   
#define ELOOP 92    
#define ENOTSUP 134 
#endif