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| author | Pali Rohár <pali@kernel.org> | 2022-10-26 21:12:02 +0200 |
|---|---|---|
| committer | Alejandro Colomar <alx@kernel.org> | 2022-10-29 23:51:46 +0200 |
| commit | 386f80c56a3995b031b153b1b719f89fd68870c6 (patch) | |
| tree | c0c89e380524e91914c9c710f81bc1279e1f82be | |
| parent | 48fea6deb5057a9cd8ebefb73682aa077e629c94 (diff) | |
| download | man-pages-386f80c56a3995b031b153b1b719f89fd68870c6.tar.gz | |
ioctl_tty.2: Document TIOCSERGETLSR/TIOCSER_TEMT
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
| -rw-r--r-- | man2/ioctl_tty.2 | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/man2/ioctl_tty.2 b/man2/ioctl_tty.2 index 759ea7bba6..41ff38b6f5 100644 --- a/man2/ioctl_tty.2 +++ b/man2/ioctl_tty.2 @@ -309,6 +309,21 @@ for the argument values .BR TCIFLUSH , .BR TCOFLUSH , .BR TCIOFLUSH . +.TP +.B TIOCSERGETLSR +Argument: +.BI "int\~*" argp +.IP +Get line status register. Status register has +.B TIOCSER_TEMT +bit set when output buffer is empty and also hardware transmitter is physically empty. +.IP +Does not have to be supported by all serial tty drivers. +.IP +.BR tcdrain (3) +does not wait and returns immediately when +.B TIOCSER_TEMT +bit is set. .SS Faking input .TP .B TIOCSTI @@ -890,7 +905,6 @@ main(int argc, char *argv[]) .\" TIOCSERGWILD int * .\" TIOCSERSWILD const int * .\" TIOCSERGSTRUCT struct async_struct * -.\" TIOCSERGETLSR int * .\" TIOCSERGETMULTI struct serial_multiport_struct * .\" TIOCSERSETMULTI const struct serial_multiport_struct * .\" TIOCGSERIAL, TIOCSSERIAL (see above) |