MPE/iX Error Messages Manual Vol 2 (32650-90879)

Chapter 3 97

Volume II Chapter 3

POSIX.1 Error Messages

(Subsystem 517)

This section presents the error messages for the POSIX.1 subsystem.

1 MESSAGE [EPERM] Operation not permitted. (POSIX.1

ERROR 1)

CAUSE An attempt was made to perform an operation limited to

processes with appropriate privileges or to the owner of a

ﬁle or other resource.

ACTION Check privilege or ownership of the ﬁle or other resource.

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

ERROR 2)

CAUSE A component of a speciﬁed pathname did not exist, or the

pathname was an empty string.

ACTION Use the pathname of the existing ﬁle.

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

CAUSE No process could be found corresponding to that speciﬁed

by the given process ID.

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

4 MESSAGE [EINTR] Interrupted function call. (POSIX.1

ERROR 4)

CAUSE 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.

ACTION No action.

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

CAUSE 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.

ACTION Check input/output device status.

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

ERROR 6)

CAUSE Input or output on a special ﬁle referred to a device that