Adding upstream version 4.22.0.upstream/4.22.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 135 insertions, 0 deletions

diff --git a/upstream/archlinux/man3p/tcflow.3p b/upstream/archlinux/man3p/tcflow.3p
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+'\" et
+.TH TCFLOW "3P" 2017 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\"
+.SH PROLOG
+This manual page is part of the POSIX Programmer's Manual.
+The Linux implementation of this interface may differ (consult
+the corresponding Linux manual page for details of Linux behavior),
+or the interface may not be implemented on Linux.
+.\"
+.SH NAME
+tcflow
+\(em suspend or restart the transmission or reception of data
+.SH SYNOPSIS
+.LP
+.nf
+#include <termios.h>
+.P
+int tcflow(int \fIfildes\fP, int \fIaction\fP);
+.fi
+.SH DESCRIPTION
+The
+\fItcflow\fR()
+function shall suspend or restart transmission or reception of data on
+the object referred to by
+.IR fildes ,
+depending on the value of
+.IR action .
+The
+.IR fildes
+argument is an open file descriptor associated with a terminal.
+.IP " *" 4
+If
+.IR action
+is TCOOFF, output shall be suspended.
+.IP " *" 4
+If
+.IR action
+is TCOON, suspended output shall be restarted.
+.IP " *" 4
+If
+.IR action
+is TCIOFF and
+.IR fildes
+refers to a terminal device, the system shall transmit a STOP character,
+which is intended to cause the terminal device to stop transmitting data
+to the system. If
+.IR fildes
+is associated with a pseudo-terminal, the STOP character need not be
+transmitted.
+.IP " *" 4
+If
+.IR action
+is TCION and
+.IR fildes
+refers to a terminal device, the system shall transmit a START character,
+which is intended to cause the terminal device to start transmitting
+data to the system. If
+.IR fildes
+is associated with a pseudo-terminal, the START character need not be
+transmitted.
+.P
+The default on the opening of a terminal file is that neither its input
+nor its output are suspended.
+.P
+Attempts to use
+\fItcflow\fR()
+from a process which is a member of a background process group on a
+.IR fildes
+associated with its controlling terminal, shall cause the process group
+to be sent a SIGTTOU signal.
+If the calling thread is blocking SIGTTOU signals or the process is
+ignoring SIGTTOU signals, the process shall be allowed to perform the
+operation, and no signal is sent.
+.SH "RETURN VALUE"
+Upon successful completion, 0 shall be returned. Otherwise, \-1
+shall be returned and
+.IR errno
+set to indicate the error.
+.SH ERRORS
+The
+\fItcflow\fR()
+function shall fail if:
+.TP
+.BR EBADF
+The
+.IR fildes
+argument is not a valid file descriptor.
+.TP
+.BR EINVAL
+The
+.IR action
+argument is not a supported value.
+.TP
+.BR EIO
+The process group of the writing process is orphaned, the calling thread
+is not blocking SIGTTOU, and the process is not ignoring SIGTTOU.
+.TP
+.BR ENOTTY
+The file associated with
+.IR fildes
+is not a terminal.
+.LP
+.IR "The following sections are informative."
+.SH EXAMPLES
+None.
+.SH "APPLICATION USAGE"
+None.
+.SH RATIONALE
+None.
+.SH "FUTURE DIRECTIONS"
+None.
+.SH "SEE ALSO"
+.IR "\fItcsendbreak\fR\^(\|)"
+.P
+The Base Definitions volume of POSIX.1\(hy2017,
+.IR "Chapter 11" ", " "General Terminal Interface",
+.IR "\fB<termios.h>\fP"
+.\"
+.SH COPYRIGHT
+Portions of this text are reprinted and reproduced in electronic form
+from IEEE Std 1003.1-2017, Standard for Information Technology
+-- Portable Operating System Interface (POSIX), The Open Group Base
+Specifications Issue 7, 2018 Edition,
+Copyright (C) 2018 by the Institute of
+Electrical and Electronics Engineers, Inc and The Open Group.
+In the event of any discrepancy between this version and the original IEEE and
+The Open Group Standard, the original IEEE and The Open Group Standard
+is the referee document. The original Standard can be obtained online at
+http://www.opengroup.org/unix/online.html .
+.PP
+Any typographical or formatting errors that appear
+in this page are most likely
+to have been introduced during the conversion of the source files to
+man page format. To report such errors, see
+https://www.kernel.org/doc/man-pages/reporting_bugs.html .