/**
*
* The following symbols are the error codes returned by the UNIX system
* functions.  Typically, a UNIX function returns -1 when an error occurs,
* and the global integer named errno contains one of these values.
*
*/
#define EPERM 1      /* User is not owner */
#define ENOENT 2     /* No such file or directory */
#define ESRCH 3      /* No such process */
#define EINTR 4      /* Interrupted system call */
#define EIO 5        /* I/O error */
#define ENXIO 6      /* No such device or address */
#define E2BIG 7      /* Arg list is too long */
#define ENOEXEC 8    /* Exec format error */
#define EBADF 9      /* Bad file number */
#define ECHILD 10    /* No child process */
#define EAGAIN 11    /* No more processes allowed */
#define ENOMEM 12    /* No memory available */
#define EACCES 13    /* Access denied */
#define EFAULT 14    /* Bad address */
#define ENOTBLK 15   /* Bulk device required */
#define EBUSY 16     /* Resource is busy */
#define EEXIST 17    /* File already exists */
#define EXDEV 18     /* Cross-device 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    /* No more files (units) allowed */
#define EMFILE 24    /* No more files (units) allowed for this process */
#define ENOTTY 25    /* Not a terminal */
#define ETXTBSY 26   /* Text file is busy */
#define EFBIG 27     /* File is too large */
#define ENOSPC 28    /* No space left */
#define ESPIPE 29    /* Seek issued to pipe */
#define EROFS 30     /* Read-only file system */
#define EMLINK 31    /* Too many links */
#define EPIPE 32     /* Broken pipe */
#define EDOM 33      /* Math function argument error */
#define ERANGE 34    /* Math function result is out of range */