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authorJon Severinsson <jon@severinsson.net>2014-07-01 20:00:00 +0200
committerJon Severinsson <jon@severinsson.net>2014-07-11 02:23:25 +0200
commit60f067b41061282b2cd5c4c10935910db9283c80 (patch)
treef41be399b30284aac463e5d7da1704c6760f4418 /man/sd_bus_new.3
parent14228c0ddf1fe80e2ed0193f0cd1cdb06e5db522 (diff)
downloadsystemd-60f067b41061282b2cd5c4c10935910db9283c80.tar.gz
Imported Upstream version 214
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+'\" t
+.TH "SD_BUS_NEW" "3" "" "systemd 214" "sd_bus_new"
+.\" -----------------------------------------------------------------
+.\" * 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_new, sd_bus_ref, sd_bus_unref \- Create a new bus object and create or destroy references to it
+.SH "SYNOPSIS"
+.sp
+.ft B
+.nf
+#include <systemd/sd\-bus\&.h>
+.fi
+.ft
+.HP \w'int\ sd_bus_new('u
+.BI "int sd_bus_new(sd_bus\ **" "bus" ");"
+.HP \w'sd_bus\ *sd_bus_ref('u
+.BI "sd_bus *sd_bus_ref(sd_bus\ *" "bus" ");"
+.HP \w'sd_bus\ *sd_bus_unref('u
+.BI "sd_bus *sd_bus_unref(sd_bus\ *" "bus" ");"
+.SH "DESCRIPTION"
+.PP
+\fBsd_bus_new()\fR
+creates a new bus object\&. This object is reference\-counted, and will be destroyed when all references are gone\&. Initially, the caller of this function owns the sole reference\&.
+.PP
+\fBsd_bus_ref()\fR
+creates a new reference to
+\fIbus\fR\&. This bus object will not be destroyed until
+\fBsd_bus_unref()\fR
+has been called as many times plus once more\&. Once the reference count has dropped to zero,
+\fIbus\fR
+cannot be used anymore, so further calls to
+\fBsd_bus_ref()\fR
+or
+\fBsd_bus_unref()\fR
+are illegal\&.
+.PP
+\fBsd_bus_unref()\fR
+destroys a reference to
+\fIbus\fR\&.
+.SH "RETURN VALUE"
+.PP
+On success,
+\fBsd_bus_new()\fR
+returns 0 or a positive integer\&. On failure, it returns a negative errno\-style error code\&.
+.PP
+\fBsd_bus_ref\fR
+always returns the argument\&.
+.PP
+\fBsd_bus_unref\fR
+always returns
+\fBNULL\fR\&.
+.SH "ERRORS"
+.PP
+Returned errors may indicate the following problems:
+.PP
+\fI\-ENOMEM\fR
+.RS 4
+Memory allocation failed\&.
+.RE
+.SH "NOTES"
+.PP
+\fBsd_bus_new()\fR
+and other functions described here are available as a shared library, which can be compiled and linked to with the
+\fBlibsystemd\fR\ \&\fBpkg-config\fR(1)
+file\&.
+.SH "SEE ALSO"
+.PP
+\fBsystemd\fR(1),
+\fBsd-bus\fR(3),
+\fBsd_bus_open_user\fR(3),
+\fBsd_bus_open_system\fR(3),
+\fBsd_bus_default_user\fR(3),
+\fBsd_bus_default_system\fR(3)