| [4] | 1 | /* The <errno.h> header defines the numbers of the various errors that can
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| 2 | * occur during program execution. They are visible to user programs and
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| 3 | * should be small positive integers. However, they are also used within
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| 4 | * MINIX, where they must be negative. For example, the READ system call is
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| 5 | * executed internally by calling do_read(). This function returns either a
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| 6 | * (negative) error number or a (positive) number of bytes actually read.
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| 7 | *
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| 8 | * To solve the problem of having the error numbers be negative inside the
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| 9 | * the system and positive outside, the following mechanism is used. All the
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| 10 | * definitions are are the form:
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| 11 | *
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| 12 | * #define EPERM (_SIGN 1)
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| 13 | *
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| 14 | * If the macro _SYSTEM is defined, then _SIGN is set to "-", otherwise it is
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| 15 | * set to "". Thus when compiling the operating system, the macro _SYSTEM
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| 16 | * will be defined, setting EPERM to (- 1), whereas when when this
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| 17 | * file is included in an ordinary user program, EPERM has the value ( 1).
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| 18 | */
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| 19 |
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| 20 | #ifndef _ERRNO_H /* check if <errno.h> is already included */
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| 21 | #define _ERRNO_H /* it is not included; note that fact */
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| 22 |
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| 23 | /* Now define _SIGN as "" or "-" depending on _SYSTEM. */
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| 24 | #ifdef _SYSTEM
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| 25 | # define _SIGN -
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| 26 | # define OK 0
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| 27 | #else
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| 28 | # define _SIGN
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| 29 | #endif
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| 30 |
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| 31 | extern int errno; /* place where the error numbers go */
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| 32 |
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| 33 | /* Here are the numerical values of the error numbers. */
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| 34 | #define _NERROR 70 /* number of errors */
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| 35 |
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| 36 | #define EGENERIC (_SIGN 99) /* generic error */
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| 37 | #define EPERM (_SIGN 1) /* operation not permitted */
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| 38 | #define ENOENT (_SIGN 2) /* no such file or directory */
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| 39 | #define ESRCH (_SIGN 3) /* no such process */
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| 40 | #define EINTR (_SIGN 4) /* interrupted function call */
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| 41 | #define EIO (_SIGN 5) /* input/output error */
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| 42 | #define ENXIO (_SIGN 6) /* no such device or address */
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| 43 | #define E2BIG (_SIGN 7) /* arg list too long */
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| 44 | #define ENOEXEC (_SIGN 8) /* exec format error */
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| 45 | #define EBADF (_SIGN 9) /* bad file descriptor */
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| 46 | #define ECHILD (_SIGN 10) /* no child process */
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| 47 | #define EAGAIN (_SIGN 11) /* resource temporarily unavailable */
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| 48 | #define ENOMEM (_SIGN 12) /* not enough space */
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| 49 | #define EACCES (_SIGN 13) /* permission denied */
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| 50 | #define EFAULT (_SIGN 14) /* bad address */
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| 51 | #define ENOTBLK (_SIGN 15) /* Extension: not a block special file */
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| 52 | #define EBUSY (_SIGN 16) /* resource busy */
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| 53 | #define EEXIST (_SIGN 17) /* file exists */
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| 54 | #define EXDEV (_SIGN 18) /* improper link */
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| 55 | #define ENODEV (_SIGN 19) /* no such device */
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| 56 | #define ENOTDIR (_SIGN 20) /* not a directory */
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| 57 | #define EISDIR (_SIGN 21) /* is a directory */
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| 58 | #define EINVAL (_SIGN 22) /* invalid argument */
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| 59 | #define ENFILE (_SIGN 23) /* too many open files in system */
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| 60 | #define EMFILE (_SIGN 24) /* too many open files */
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| 61 | #define ENOTTY (_SIGN 25) /* inappropriate I/O control operation */
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| 62 | #define ETXTBSY (_SIGN 26) /* no longer used */
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| 63 | #define EFBIG (_SIGN 27) /* file too large */
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| 64 | #define ENOSPC (_SIGN 28) /* no space left on device */
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| 65 | #define ESPIPE (_SIGN 29) /* invalid seek */
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| 66 | #define EROFS (_SIGN 30) /* read-only file system */
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| 67 | #define EMLINK (_SIGN 31) /* too many links */
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| 68 | #define EPIPE (_SIGN 32) /* broken pipe */
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| 69 | #define EDOM (_SIGN 33) /* domain error (from ANSI C std) */
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| 70 | #define ERANGE (_SIGN 34) /* result too large (from ANSI C std) */
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| 71 | #define EDEADLK (_SIGN 35) /* resource deadlock avoided */
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| 72 | #define ENAMETOOLONG (_SIGN 36) /* file name too long */
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| 73 | #define ENOLCK (_SIGN 37) /* no locks available */
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| 74 | #define ENOSYS (_SIGN 38) /* function not implemented */
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| 75 | #define ENOTEMPTY (_SIGN 39) /* directory not empty */
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| 76 |
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| 77 | /* The following errors relate to networking. */
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| 78 | #define EPACKSIZE (_SIGN 50) /* invalid packet size for some protocol */
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| 79 | #define EOUTOFBUFS (_SIGN 51) /* not enough buffers left */
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| 80 | #define EBADIOCTL (_SIGN 52) /* illegal ioctl for device */
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| 81 | #define EBADMODE (_SIGN 53) /* badmode in ioctl */
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| 82 | #define EWOULDBLOCK (_SIGN 54)
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| 83 | #define EBADDEST (_SIGN 55) /* not a valid destination address */
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| 84 | #define EDSTNOTRCH (_SIGN 56) /* destination not reachable */
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| 85 | #define EISCONN (_SIGN 57) /* all ready connected */
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| 86 | #define EADDRINUSE (_SIGN 58) /* address in use */
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| 87 | #define ECONNREFUSED (_SIGN 59) /* connection refused */
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| 88 | #define ECONNRESET (_SIGN 60) /* connection reset */
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| 89 | #define ETIMEDOUT (_SIGN 61) /* connection timed out */
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| 90 | #define EURG (_SIGN 62) /* urgent data present */
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| 91 | #define ENOURG (_SIGN 63) /* no urgent data present */
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| 92 | #define ENOTCONN (_SIGN 64) /* no connection (yet or anymore) */
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| 93 | #define ESHUTDOWN (_SIGN 65) /* a write call to a shutdown connection */
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| 94 | #define ENOCONN (_SIGN 66) /* no such connection */
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| 95 | #define EAFNOSUPPORT (_SIGN 67) /* address family not supported */
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| 96 | #define EPROTONOSUPPORT (_SIGN 68) /* protocol not supported by AF */
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| 97 | #define EPROTOTYPE (_SIGN 69) /* Protocol wrong type for socket */
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| 98 | #define EINPROGRESS (_SIGN 70) /* Operation now in progress */
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| 99 | #define EADDRNOTAVAIL (_SIGN 71) /* Can't assign requested address */
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| 100 | #define EALREADY (_SIGN 72) /* Connection already in progress */
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| 101 | #define EMSGSIZE (_SIGN 73) /* Message too long */
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| 102 |
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| 103 | /* The following are not POSIX errors, but they can still happen.
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| 104 | * All of these are generated by the kernel and relate to message passing.
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| 105 | */
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| 106 | #define ELOCKED (_SIGN 101) /* can't send message due to deadlock */
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| 107 | #define EBADCALL (_SIGN 102) /* illegal system call number */
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| 108 | #define EBADSRCDST (_SIGN 103) /* bad source or destination process */
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| 109 | #define ECALLDENIED (_SIGN 104) /* no permission for system call */
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| 110 | #define EDEADDST (_SIGN 105) /* send destination is not alive */
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| 111 | #define ENOTREADY (_SIGN 106) /* source or destination is not ready */
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| 112 | #define EBADREQUEST (_SIGN 107) /* destination cannot handle request */
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| 113 | #define EDONTREPLY (_SIGN 201) /* pseudo-code: don't send a reply */
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| 114 |
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| 115 | #endif /* _ERRNO_H */
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