POSIX.1 Error Messages

[EPERM] Operation not permitted. (POSIX.1 ERROR 1)

An attempt was made to perform an operation limited to processes with appropriate privileges or to the owner of a file or other resource.

Check privilege or ownership of the file or other resource.

[ENOENT] No such file or directory. (POSIX.1 ERROR 2)

A component of a specified pathname did not exist, or the pathname was an empty string.

Use the pathname of the existing file.

[ESRCH] No such process. (POSIX.1 ERROR 3)

No process could be found corresponding to that specified by the given process ID.

Check the process ID being used or use a valid process ID.

[EINTR] Interrupted function call. (POSIX.1 ERROR 4)

An asynchronous signal (such as SIGINT or SIGQUIT; see the description of the header \<signal.h\> in the MPE/iX Developer's Kit Reference Manual) was caught by the process during the execution of an interruptible function. If the signal handler performs a normal return, the interrupted function call may return this error condition.

No action.

[EIO] Input/output error. (POSIX.1 ERROR 5)

Some physical input or output error occurred. This error may be reported on a subsequent operation on the same file descriptor. Any other error-causing operation on the same file descriptor may cause the [EIO] error indication to be lost.

Check input/output device status.

[ENXIO] No such device or address. (POSIX.1 ERROR 6)

Input or output on a special file referred to a device that did not exist, or made a request beyond the limits of the device. This error may also occur when, for example, a tape drive is not online or a disk pack is not loaded on a drive.

Check the status of the device or the address being used.

[E2BIG] Arg list too long. (POSIX.1 ERROR 7)

The sum of the number of bytes used by the new procedure image's argument list and eviroment list was greater than the system imposed limit of {ARG_MAX} bytes.

Use less arguments.

[ENOEXEC] Exec format error. (POSIX.1 ERROR 8)

A request was made to execute a file that, although it had the appropriate permissions, was not in the format required by this implementation for executables files. See the MPE/iX Developer's Kit Reference Manual for the requirements of exec()'able files.

Only attempt to exec() exec()'able files.

[EBADF] Bad file descriptor. (POSIX.1 ERROR 9)

A file descriptor argument was out of range, referred to no open file, or a read (write) request was made to a file that was only open for writing (reading).

Open file or use correct access.

[ECHILD] No child processes. (POSIX.1 ERROR 10)

A wait() or waitpid() function was executed by a process that had no existing or unwaited-for child processes.

Create one or more child processes.

[EAGAIN] Resource temporarily unavailable. (POSIX.1 ERROR 11)

This is a temporary condition, and later calls to the same routines may complete normally.

Try again.

[ENOMEM] Not enough space. (POSIX.1 ERROR 12)

The new process image required more memory than allowed by the hardware or by system-imposed memory management constraints.

Increase memory usage capability of user or size of the process image.

[EACCES] Permission Denied. (POSIX.1 ERROR 13)

An attempt was made to access a file in a way forbidden by its file access permissions.

Use correct access if you are able.

[EFAULT] Bad Address. (POSIX.1 ERROR 14)

The system detected an invalid or NULL address in attempting to use an argument of a call.

Check the address being used.

[EBUSY] Resource busy. (POSIX.1 ERROR 16)

An attempt was made to use a system resource that was not available at the time because it was being used by a process in a manner that would have conflicted with the request being made by this process.

Have the resource released and try again.

[EEXIST] File exists. (POSIX.1 ERROR 17)

An existing file specified in an inappropriate context; for instance, as the new directory name in a mkdir() function.

Check to see if file or directory already exists.

[EXDEV] Improper link. (POSIX.1 ERROR 18)

A link to a file on another file system was attempted.

Do not attempt a link to a file located across a file system.

[ENODEV] No such device. (POSIX.1 ERROR 19)

An attempt was made to apply an inappropriate function to a device; for example, trying to read a write-only device such as a printer.

Use valid access to the device.

[ENOTDIR] Not a directory. (POSIX.1 ERROR 20)

A component of the specified pathname existed, but it was not a directory, when a directory was expected.

Use the correct pathname.

[EISDIR] Is a directory. (POSIX.1 ERROR 21)

An attempt was made to open a directory as an ordinary file which is not permitted by this implementation.

Use directory functions to operate on directories.

[EINVAL] Invalid argument. (POSIX.1 ERROR 22)

Some invalid agrument was supplied. [For example, specifying an undefined signal to a signal() or kill() function].

Use valid arguments.

[ENFILE] Too many open files in system. (POSIX.1 ERROR 23)

Too many files are currently open in the system. The system reached its predefined limit for simultaneously open files and temporarily could not accept requests to open another one.

Close unneeded files.

[EMFILE] Too many open files. (POSIX.1 ERROR 24)

An attempt was made to open more than the maximum number of {OPEN_MAX} file descriptors allowed in this process.

Close unneeded files.

[ENOTTY] Inappropriate I/O control operation. (POSIX.1 ERROR 25)

A control function was attempted for a file or a special file for which the operation was inappropriate.

Use appropriate control for file.

[EFBIG] File too large. (POSIX.1 ERROR 27)

The size of a file would exceed an implementation-defined maximum file size.

Use smaller size files.

[ENOSPC] No space left on device. (POSIX.1 ERROR 28)

During a write() function on a regular file, or when extending a directory, there was no free space left on the device.

Deallocate unneeded disk space.

[ESPIPE] Invalid seek. (POSIX.1 ERROR 29)

An lseek() function was issued on a pipe or FIFO.

Do not attempt seeks on pipes or FIFOs.

[EROFS] Read-only file system. (POSIX.1 ERROR 30)

An attempt was made to modify a file or directory on a file system that was read-only at that time.

None.

[EMLINK] Too many links. (POSIX.1 ERROR 31)

An attempt was made to have the link count of a single file exceed {LINK_MAX}.

Reduce the number of links to the offending file or directory.

[EPIPE] Broken pipe. (POSIX.1 ERROR 32)

A write was attempted on a pipe or FIFO for which there was no process to read the data.

Re-establish the pipe or FIFO.

[EDOM] Domain error. (POSIX.1 ERROR 33)

Defined in the C Standard; an input argument was outside the defined domain of the mathematical function.

Adhere to mathematical domain requirements.

[ERANGE] Result too large. (POSIX.1 ERROR 34)

Defined in the C Standard; the result of the function was too large to fit in the available space.

Use a larger buffer space with the function.

[ENOMSG] No IPC message waiting. (POSIX.1 ERROR 35)

The specified message queue does not contain a message of the type specified in the mtype parameter and IPC_NOWAIT was specified in the msgflg parameter.

None. Application dependent. The receive operation can be retried.

[EIDRM] Identifier removed. (POSIX.1 ERROR 36)

The System V IPC resource ID used has been removed.

Use an allocated IPC resource.

[EDEADLK] Resource deadlock avoided. (POSIX.1 ERROR 45)

An attempt was made to lock a system resource that would have resulted in a deadlock situation.

Try again at a later time or free the resources which would have lead deadlock.

[ENOLCK] No locks available. (POSIX.1 ERROR 46)

A system-imposed limit on the number of simultaneous file and record locks was reached, and no more were available at that time.

Remove unneeded locks and try again.

[EEXCL] File can't be opened exclusively. (POSIX.1 ERROR 47)

Attempt to open an existing file exclusively failed because file is already opened.

Assure that no other processes have the file opened before attempting to open the file exclusively.

[EIMPL] Implementation error. (POSIX.1 ERROR 48)

One of several implementation-specific errors of occurred. See the MPE/iX Developer's Kit Reference Manual for more information.

See the MPE/iX Developer's Kit Reference Manual

[ESYSERR] Internal Operating System error. (POSIX.1 ERROR 50)

This implementation has detected that an internal Operating System error has occurred which is not applicable to the POSIX.1 environment.

Consult a HP support engineer.

[ESEEK] Device does not support seeking. (POSIX.1 ERROR 56)

The device is such that does not support the concept of seeking by the lseek() function.

Do not attempt a seek on such a device.

[ENOBUFS] No buffer space available. (POSIX.1 ERROR 233)

Buffer space allocated from the process heap space is currently depleted.

Deallocate or release unused buffer space.

[ENOTEMPTY] Directory not empty. (POSIX.1 ERROR 247)

A directory with entries other than dot and dot-dot was supplied when an empty directory was expected.

Remove all file and directories in target directory.

[ENAMETOOLONG] Filename too long. (POSIX.1 ERROR 248)

The size of a pathname string exceeded {PATH_MAX}, or a pathname component was longer than {NAME_MAX} and {_POSIX_NO_TRUNC} was in effect for that file.

Use shorter pathnames or filenames.

[ENOSYS] Function not implemented. (POSIX.1 ERROR 251)

An attempt was made to use a function that is not available in this implementation.

Refer to the MPE/iX Developer's Kit Reference Manual for implementation-defined functionality.