Open System Services System Calls Reference Manual (G06.25+, H06.03+)

System Functions (n - p) pipe(2)
[EMFILE] No more file descriptors are available for this process.
[ENOMEM] The system has insufficient resources.
[ENOROOT] The function was called while the root fileset (fileset 0) was not available.
[EOSSNOTRUNNING]
The function was called while a required system process was not running.
For all other error conditions, errno is set to the appropriate Guardian file-system error number.
See the Guardian Procedure Errors and Messages Manual for more information about a specific
Guardian file-system error.
RELATED INFORMATION
Functions: fcntl(2), read(2), select(2), write(2).
Commands: sh(1).
STANDARDS CONFORMANCE
HP extensions to the XPG4 Version 2 specification are:
• The errno values [EFAULT], [ENOROOT], and [EOSSNOTRUNNING] can be
returned.
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