error.h

/* See COPYRIGHT for copyright information. */

#ifndef JOS_INC_ERROR_H
#define JOS_INC_ERROR_H

enum {
  // Kernel error codes -- keep in sync with list in lib/printfmt.c.
  E_UNSPECIFIED   = 1,          // Unspecified or unknown problem
  E_BAD_ENV,                    // Environment doesn't exist or otherwise
                                // cannot be used in requested action
  E_INVAL,                      // Invalid parameter
  E_NO_MEM,                     // Request failed due to memory shortage
  E_NO_FREE_ENV,                // Attempt to create a new environment beyond
                                // the maximum allowed
  E_FAULT,                      // Memory fault

  E_IPC_NOT_RECV,               // Attempt to send to env that is not recving
  E_EOF,                        // Unexpected end of file

  // File system error codes -- only seen in user-level
  E_NO_DISK,                    // No free space left on disk
  E_MAX_OPEN,                   // Too many files are open
  E_NOT_FOUND,                  // File or block not found
  E_BAD_PATH,                   // Bad path
  E_FILE_EXISTS,                // File already exists
  E_NOT_EXEC,                   // File not a valid executable
  E_NOT_SUPP,                   // Operation not supported

  MAXERROR
};

#endif  // !JOS_INC_ERROR_H */