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