This chapter describes the functions for retrieving and setting errors and the error codes set by NSPR.

For information on naming conventions for NSPR types, functions, and macros, see NSPR Naming Conventions.

Error Type

Error Codes

Error codes defined in prerror.h:

PR_OUT_OF_MEMORY_ERROR

Insufficient memory to perform request.

PR_BAD_DESCRIPTOR_ERROR

The file descriptor used as an argument in the preceding function is invalid.

PR_WOULD_BLOCK_ERROR

The operation would have blocked, which conflicts with the semantics that have been established.

PR_ACCESS_FAULT_ERROR

One of the arguments of the preceding function specified an invalid memory address.

PR_INVALID_METHOD_ERROR

The preceding function is invalid for the type of file descriptor used.

PR_ILLEGAL_ACCESS_ERROR

One of the arguments of the preceding function specified an invalid memory address.

PR_UNKNOWN_ERROR

Some unknown error has occurred.

PR_PENDING_INTERRUPT_ERROR

The operation terminated because another thread has interrupted it with PR_Interrupt.

PR_NOT_IMPLEMENTED_ERROR

The preceding function has not been implemented.

PR_IO_ERROR

The preceding I/O function encountered some sort of an error, perhaps an invalid device.

PR_IO_TIMEOUT_ERROR

The I/O operation has not completed in the time specified for the preceding function.

PR_IO_PENDING_ERROR

An I/O operation has been attempted on a file descriptor that is currently busy with another operation.

PR_DIRECTORY_OPEN_ERROR

The directory could not be opened.

PR_INVALID_ARGUMENT_ERROR

One or more of the arguments to the function is invalid.

PR_ADDRESS_NOT_AVAILABLE_ERROR

The network address (PRNetAddr) is not available (probably in use).

PR_ADDRESS_NOT_SUPPORTED_ERROR

The type of network address specified is not supported.

PR_IS_CONNECTED_ERROR

An attempt to connect on an already connected network file descriptor.

PR_BAD_ADDRESS_ERROR

The network address specified is invalid (as reported by the network).

PR_ADDRESS_IN_USE_ERROR

Network address specified (PRNetAddr) is in use.

PR_CONNECT_REFUSED_ERROR

The peer has refused to allow the connection to be established.

PR_NETWORK_UNREACHABLE_ERROR

The network address specifies a host that is unreachable (perhaps temporary).

PR_CONNECT_TIMEOUT_ERROR

The connection attempt did not complete in a reasonable period of time.

PR_NOT_CONNECTED_ERROR

The preceding function attempted to use connected semantics on a network file descriptor that was not connected.

PR_LOAD_LIBRARY_ERROR

Failure to load a dynamic library.

PR_UNLOAD_LIBRARY_ERROR

Failure to unload a dynamic library.

PR_FIND_SYMBOL_ERROR

Symbol could not be found in the specified library.

PR_INSUFFICIENT_RESOURCES_ERROR

There are insufficient system resources to process the request.

PR_DIRECTORY_LOOKUP_ERROR

A directory lookup on a network address has failed.

PR_TPD_RANGE_ERROR

Attempt to access a thread-private data index that is out of range of any index that has been allocated to the process.

PR_PROC_DESC_TABLE_FULL_ERROR

The process’ table for holding open file descriptors is full.

PR_SYS_DESC_TABLE_FULL_ERROR

The system’s table for holding open file descriptors has been exceeded.

PR_NOT_SOCKET_ERROR

An attempt to use a non-network file descriptor on a network-only operation.

PR_NOT_TCP_SOCKET_ERROR

Attempt to perform a TCP specific function on a non-TCP file descriptor.

PR_SOCKET_ADDRESS_IS_BOUND_ERRO

Attempt to bind an address to a TCP file descriptor that is already bound.

PR_NO_ACCESS_RIGHTS_ERROR

Calling thread does not have privilege to perform the operation requested.

PR_OPERATION_NOT_SUPPORTED_ERRO

The requested operation is not supported by the platform.

PR_PROTOCOL_NOT_SUPPORTED_ERROR

The host operating system does not support the protocol requested.

PR_REMOTE_FILE_ERROR

Access to the remote file has been severed.

PR_BUFFER_OVERFLOW_ERROR

The value retrieved is too large to be stored in the buffer provided.

PR_CONNECT_RESET_ERROR

The (TCP) connection has been reset by the peer.

PR_RANGE_ERROR

Unused.

PR_DEADLOCK_ERROR

Performing the requested operation would have caused a deadlock. The deadlock was avoided.

PR_FILE_IS_LOCKED_ERROR

An attempt to acquire a lock on a file has failed because the file is already locked.

PR_FILE_TOO_BIG_ERROR

Completing the write or seek operation would have resulted in a file larger than the system could handle.

PR_NO_DEVICE_SPACE_ERROR

The device for storing the file is full.

PR_PIPE_ERROR

Unused.

PR_NO_SEEK_DEVICE_ERROR

Unused.

PR_IS_DIRECTORY_ERROR

Attempt to perform a normal file operation on a directory.

PR_LOOP_ERROR

Symbolic link loop.

PR_NAME_TOO_LONG_ERROR

Filename is longer than allowed by the host operating system.

PR_FILE_NOT_FOUND_ERROR

The requested file was not found.

PR_NOT_DIRECTORY_ERROR

Attempt to perform directory specific operations on a normal file.

PR_READ_ONLY_FILESYSTEM_ERROR

Attempt to write to a read-only file system.

PR_DIRECTORY_NOT_EMPTY_ERROR

Attempt to delete a directory that is not empty.

PR_FILESYSTEM_MOUNTED_ERROR

Attempt to delete or rename a file object while the file system is busy.

PR_NOT_SAME_DEVICE_ERROR

Request to rename a file to a file system on another device.

PR_DIRECTORY_CORRUPTED_ERROR

The directory object in the file system is corrupted.

PR_FILE_EXISTS_ERROR

Attempt to create or rename a file when the new name is already being used.

PR_MAX_DIRECTORY_ENTRIES_ERROR

Attempt to add new filename to directory would exceed the limit allowed.

PR_INVALID_DEVICE_STATE_ERROR

The device was in an invalid state to complete the desired operation.

PR_DEVICE_IS_LOCKED_ERROR

The device needed to perform the desired request is locked.

PR_NO_MORE_FILES_ERROR

There are no more entries in the directory.

PR_END_OF_FILE_ERROR

Unexpectedly encountered end of file (Mac OS only).

PR_FILE_SEEK_ERROR

An unexpected seek error (Mac OS only).

PR_FILE_IS_BUSY_ERROR

The file is busy and the operation cannot be performed.

PR_IN_PROGRESS_ERROR

The operation is still in progress (probably a nonblocking connect).

PR_ALREADY_INITIATED_ERROR

The (retried) operation has already been initiated (probably a nonblocking connect).

PR_GROUP_EMPTY_ERROR

The wait group is empty.

PR_INVALID_STATE_ERROR

The attempted operation is on an object that was in an improper state to perform the request.

PR_MAX_ERROR

Placeholder for the end of the list.