111 lines
5.7 KiB
C
Executable file
111 lines
5.7 KiB
C
Executable file
/* The <errno.h> header defines the numbers of the various errors that can
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* occur during program execution. They are visible to user programs and
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* should be small positive integers. However, they are also used within
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* MINIX, where they must be negative. For example, the READ system call is
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* executed internally by calling do_read(). This function returns either a
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* (negative) error number or a (positive) number of bytes actually read.
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*
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* To solve the problem of having the error numbers be negative inside the
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* the system and positive outside, the following mechanism is used. All the
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* definitions are are the form:
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*
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* #define EPERM (_SIGN 1)
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*
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* If the macro _SYSTEM is defined, then _SIGN is set to "-", otherwise it is
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* set to "". Thus when compiling the operating system, the macro _SYSTEM
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* will be defined, setting EPERM to (- 1), whereas when when this
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* file is included in an ordinary user program, EPERM has the value ( 1).
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*/
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#ifndef _ERRNO_H /* check if <errno.h> is already included */
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#define _ERRNO_H /* it is not included; note that fact */
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/* Now define _SIGN as "" or "-" depending on _SYSTEM. */
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#ifdef _SYSTEM
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# define _SIGN -
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# define OK 0
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#else
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# define _SIGN
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#endif
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extern int errno; /* place where the error numbers go */
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/* Here are the numerical values of the error numbers. */
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#define _NERROR 70 /* number of errors */
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#define EGENERIC (_SIGN 99) /* generic error */
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#define EPERM (_SIGN 1) /* operation not permitted */
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#define ENOENT (_SIGN 2) /* no such file or directory */
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#define ESRCH (_SIGN 3) /* no such process */
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#define EINTR (_SIGN 4) /* interrupted function call */
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#define EIO (_SIGN 5) /* input/output error */
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#define ENXIO (_SIGN 6) /* no such device or address */
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#define E2BIG (_SIGN 7) /* arg list too long */
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#define ENOEXEC (_SIGN 8) /* exec format error */
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#define EBADF (_SIGN 9) /* bad file descriptor */
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#define ECHILD (_SIGN 10) /* no child process */
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#define EAGAIN (_SIGN 11) /* resource temporarily unavailable */
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#define ENOMEM (_SIGN 12) /* not enough space */
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#define EACCES (_SIGN 13) /* permission denied */
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#define EFAULT (_SIGN 14) /* bad address */
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#define ENOTBLK (_SIGN 15) /* Extension: not a block special file */
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#define EBUSY (_SIGN 16) /* resource busy */
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#define EEXIST (_SIGN 17) /* file exists */
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#define EXDEV (_SIGN 18) /* improper link */
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#define ENODEV (_SIGN 19) /* no such device */
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#define ENOTDIR (_SIGN 20) /* not a directory */
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#define EISDIR (_SIGN 21) /* is a directory */
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#define EINVAL (_SIGN 22) /* invalid argument */
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#define ENFILE (_SIGN 23) /* too many open files in system */
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#define EMFILE (_SIGN 24) /* too many open files */
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#define ENOTTY (_SIGN 25) /* inappropriate I/O control operation */
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#define ETXTBSY (_SIGN 26) /* no longer used */
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#define EFBIG (_SIGN 27) /* file too large */
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#define ENOSPC (_SIGN 28) /* no space left on device */
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#define ESPIPE (_SIGN 29) /* invalid seek */
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#define EROFS (_SIGN 30) /* read-only file system */
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#define EMLINK (_SIGN 31) /* too many links */
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#define EPIPE (_SIGN 32) /* broken pipe */
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#define EDOM (_SIGN 33) /* domain error (from ANSI C std) */
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#define ERANGE (_SIGN 34) /* result too large (from ANSI C std) */
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#define EDEADLK (_SIGN 35) /* resource deadlock avoided */
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#define ENAMETOOLONG (_SIGN 36) /* file name too long */
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#define ENOLCK (_SIGN 37) /* no locks available */
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#define ENOSYS (_SIGN 38) /* function not implemented */
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#define ENOTEMPTY (_SIGN 39) /* directory not empty */
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/* The following errors relate to networking. */
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#define EPACKSIZE (_SIGN 50) /* invalid packet size for some protocol */
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#define EOUTOFBUFS (_SIGN 51) /* not enough buffers left */
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#define EBADIOCTL (_SIGN 52) /* illegal ioctl for device */
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#define EBADMODE (_SIGN 53) /* badmode in ioctl */
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#define EWOULDBLOCK (_SIGN 54)
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#define EBADDEST (_SIGN 55) /* not a valid destination address */
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#define EDSTNOTRCH (_SIGN 56) /* destination not reachable */
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#define EISCONN (_SIGN 57) /* all ready connected */
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#define EADDRINUSE (_SIGN 58) /* address in use */
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#define ECONNREFUSED (_SIGN 59) /* connection refused */
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#define ECONNRESET (_SIGN 60) /* connection reset */
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#define ETIMEDOUT (_SIGN 61) /* connection timed out */
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#define EURG (_SIGN 62) /* urgent data present */
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#define ENOURG (_SIGN 63) /* no urgent data present */
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#define ENOTCONN (_SIGN 64) /* no connection (yet or anymore) */
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#define ESHUTDOWN (_SIGN 65) /* a write call to a shutdown connection */
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#define ENOCONN (_SIGN 66) /* no such connection */
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#define EAFNOSUPPORT (_SIGN 67) /* address family not supported */
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#define EPROTONOSUPPORT (_SIGN 68) /* protocol not supported by AF */
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/* The following are not POSIX errors, but they can still happen.
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* All of these are generated by the kernel and relate to message passing.
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*/
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#define ELOCKED (_SIGN 101) /* can't send message due to deadlock */
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#define EBADCALL (_SIGN 102) /* illegal system call number */
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#define EBADSRCDST (_SIGN 103) /* bad source or destination process */
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#define ECALLDENIED (_SIGN 104) /* no permission for system call */
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#define EDEADDST (_SIGN 105) /* send destination is not alive */
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#define ENOTREADY (_SIGN 106) /* source or destination is not ready */
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#define EBADREQUEST (_SIGN 107) /* destination cannot handle request */
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#define EDONTREPLY (_SIGN 201) /* pseudo-code: don't send a reply */
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#endif /* _ERRNO_H */
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