HP-UX Reference (11i v1 00/12) - 5 Miscellaneous Topics, 7 Device (Special) Files, 9 General Information, Index (vol 9)

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STANDARD Printed by: Nora Chuang [nchuang] STANDARD

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ptem(7) ptem(7)

upstream with the jwinsize structure. If the values are zero, ptem sends an M_IOCNAK

message upstream.

• When an M_IOCTL message of type TIOCGWINSZ is received on its write queue and if the

values in the winsize structure in ptem are not zero, ptem sends an M_IOCACK message

upstream with the winsize structure. If the values are zero, ptem sends an M_IOCNAK mes-

sage upstream.

• When an M_IOCTL message of type TIOCSWINSZ is received in its write queue, ptem saves

the information passed to it in the winsize structure and sends an M_PCSIG (with the signal

number set to SIGWINCH) upstream to the pty slave process if the window size is changed.

• When an M_IOCTL message of type TIOCGWINSZ is received on its read queue and if the

values in the winsize structure in ptem are not zero, ptem sends an M_IOCACK message

downstream with the winsize structure. If the values are zero, ptem sends an M_IOCNAK

message downstream.

• When an M_IOCTL message of type TIOCSWINSZ is received in its read queue, ptem saves

the information passed to it in the winsize structure and sends an M_PCSIG (with the signal

number is set to SIGWINCH) upstream to the pty slave process if the window size is changed.

• All other messages not mentioned above are passed to the next module or driver.

AUTHOR

ptem was developed by HP.