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

lseek(2) OSS System Calls Reference Manual
[EINVAL] One of these conditions exists:
• The whence parameter is an invalid value, or the resulting file offset
would be an invalid value (that is, a value greater than 2 gigabytes or
less than 0 [zero]).
• The filedes parameter refers to a file (other than a pipe, FIFO, or direc-
tory) on which seeking cannot be performed.
[EISDIR] The filedes parameter refers to an OSS directory.
[EISGUARDIAN]
The value used for the filedes parameter is appropriate only in the Guardian
environment.
[ESPIPE] The filedes parameter refers to a pipe, FIFO, or socket.
[EWRONGID] One of these conditions occurred:
• The process attempted an operation through an operating system
input/output process (such as a terminal server process) that has failed or
is in the down state.
• The processor for the disk process of the specified file failed during an
input or output operation, and takeover by the backup process occurred.
• The open file descriptor has migrated to a new processor, but the new
processor lacks a resource or system process needed for using the file
descriptor.
The file descriptor specified by the filedes parameter can only be closed.
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), fseek(3), open(2), read(2), write(2).
STANDARDS CONFORMANCE
The POSIX standards leave some features to the implementing vendor to define. These features
are affected in the HP implementation:
• If the lseek() function is called for a pipe or FIFO, the errno value [ESPIPE] is returned.
• If the lseek() function is called for a character special file, no errno value is returned.
• If the lseek() function is called for any other device on which seeking cannot be per-
formed, the operation fails, and errno is set to [EINVAL].
HP extensions to the XPG4 Version 2 specification are:
• The errno values [EINVAL], [EISDIR], [EISGUARDIAN], and [EWRONGID] can be
returned.
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