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

System Functions (a - d) creat(2)
• If bits other than the file permission and appropriate file-type flags are set in the mode
parameter, errno is set to [EINVAL].
• The O_TRUNC flag is ignored for files other than regular files.
• An attempt to open an OSS directory with creat() fails.
HP extensions to the XPG4 Version 2 specification are:
• Opening Guardian files (that is, files in the /G file system) is supported, as described
under Opening Guardian Files in DESCRIPTION.
• The errno values [EFAULT], [EFILEBAD], [EFSBAD], [EGUARDIANOPEN], [EIO],
[ELOOP], [EOSSNOTRUNNING], and [EPERM] can be returned.
• The file type S_NONSTOP is supported.
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