#ifndef _ERRNO_H		/* check if <errno.h> is already included */
#define _ERRNO_H		/* it is not included; note that fact */

extern int errno;		  /* place where the error numbers go */
#define OK 0
#define EGENERIC      99  /* generic error */
#define EPERM          1  /* operation not permitted */
#define ENOENT         2  /* no such file or directory */
#define ESRCH          3  /* no such process */
#define EINTR          4  /* interrupted function call */
#define EIO            5  /* input/output error */
#define ENXIO          6  /* no such device or address */
#define E2BIG          7  /* arg list too long */
#define ENOEXEC        8  /* exec format error */
#define EBADF          9  /* bad file descriptor */
#define ECHILD        10  /* no child process */
#define EAGAIN        11  /* resource temporarily unavailable */
#define ENOMEM        12  /* not enough space */
#define EACCES        13  /* permission denied */
#define EFAULT        14  /* bad address */
#define ENOTBLK       15  /* Extension: not a block special file */
#define EBUSY         16  /* resource busy */
#define EEXIST        17  /* file exists */
#define EXDEV         18  /* improper link */
#define ENODEV        19  /* no such device */
#define ENOTDIR       20  /* not a directory */
#define EISDIR        21  /* is a directory */
#define EINVAL        22  /* invalid argument */
#define ENFILE        23  /* too many open files in system */
#define EMFILE        24  /* too many open files */
#define ENOTTY        25  /* inappropriate I/O control operation */
#define ETXTBSY       26  /* no longer used */
#define EFBIG         27  /* file too large */
#define ENOSPC        28  /* no space left on device */
#define ESPIPE        29  /* invalid seek */
#define EROFS         30  /* read-only file system */
#define EMLINK        31  /* too many links */
#define EPIPE         32  /* broken pipe */
#define EDOM          33  /* domain error    	(from ANSI C std) */
#define ERANGE        34  /* result too large	(from ANSI C std) */
#define EDEADLK       35  /* resource deadlock avoided */
#define ENAMETOOLONG  36  /* file name too long */
#define ENOLCK        37  /* no locks available */
#define ENOSYS        38  /* function not implemented */
#define ENOTEMPTY     39  /* directory not empty */

#endif /* _ERRNO_H */