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-'\" t
-.TH "SD_BUS_SET_FD" "3" "" "systemd 254" "sd_bus_set_fd"
-.\" -----------------------------------------------------------------
-.\" * Define some portability stuff
-.\" -----------------------------------------------------------------
-.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-.\" http://bugs.debian.org/507673
-.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
-.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-.ie \n(.g .ds Aq \(aq
-.el .ds Aq '
-.\" -----------------------------------------------------------------
-.\" * set default formatting
-.\" -----------------------------------------------------------------
-.\" disable hyphenation
-.nh
-.\" disable justification (adjust text to left margin only)
-.ad l
-.\" -----------------------------------------------------------------
-.\" * MAIN CONTENT STARTS HERE *
-.\" -----------------------------------------------------------------
-.SH "NAME"
-sd_bus_set_fd \- Set the file descriptors to use for bus communication
-.SH "SYNOPSIS"
-.sp
-.ft B
-.nf
-#include <systemd/sd\-bus\&.h>
-.fi
-.ft
-.HP \w'int\ sd_bus_set_fd('u
-.BI "int sd_bus_set_fd(sd_bus\ *" "bus" ", int\ " "input_fd" ", int\ " "output_fd" ");"
-.SH "DESCRIPTION"
-.PP
-\fBsd_bus_set_fd()\fR
-sets the file descriptors used to communicate by a bus connection object\&. Both
-\fIinput_fd\fR
-and
-\fIoutput_fd\fR
-must be valid file descriptors, referring to stream\-based file objects (e\&.g\&. a stream socket, a pair of pipes or FIFOs, or even a TTY device)\&.
-\fIinput_fd\fR
-must be readable, and
-\fIoutput_fd\fR
-must be writable\&. The same file descriptor may be used (and typically is used) as both the input and the output file descriptor\&. This function must be called before the bus connection is started via
-\fBsd_bus_start\fR(3)\&.
-.PP
-The bus connection object will take possession of the passed file descriptors and will close them automatically when it is freed\&. Use
-\fBsd_bus_set_close_on_exit\fR(3)
-to turn off this behaviour\&.
-.SH "RETURN VALUE"
-.PP
-On success,
-\fBsd_bus_set_fd()\fR
-returns a non\-negative integer\&. On failure, it returns a negative errno\-style error code\&.
-.SS "Errors"
-.PP
-Returned errors may indicate the following problems:
-.PP
-\fB\-EINVAL\fR
-.RS 4
-An invalid bus object was passed\&.
-.RE
-.PP
-\fB\-ECHILD\fR
-.RS 4
-The bus connection was allocated in a parent process and is being reused in a child process after
-\fBfork()\fR\&.
-.RE
-.PP
-\fB\-EBADF\fR
-.RS 4
-An invalid file descriptor was passed to
-\fBsd_bus_set_fd()\fR\&.
-.RE
-.PP
-\fB\-ENOPKG\fR
-.RS 4
-The bus cannot be resolved\&.
-.RE
-.PP
-\fB\-EPERM\fR
-.RS 4
-The bus connection has already been started\&.
-.RE
-.SH "NOTES"
-.PP
-Functions described here are available as a shared library, which can be compiled against and linked to with the
-\fBlibsystemd\fR\ \&\fBpkg-config\fR(1)
-file\&.
-.PP
-The code described here uses
-\fBgetenv\fR(3), which is declared to be not multi\-thread\-safe\&. This means that the code calling the functions described here must not call
-\fBsetenv\fR(3)
-from a parallel thread\&. It is recommended to only do calls to
-\fBsetenv()\fR
-from an early phase of the program when no other threads have been started\&.
-.SH "SEE ALSO"
-.PP
-\fBsystemd\fR(1),
-\fBsd-bus\fR(3),
-\fBsd_bus_get_fd\fR(3),
-\fBsd_bus_start\fR(3)