1 files changed, 67 insertions, 0 deletions
diff --git a/doc/man/bus_open.3 b/doc/man/bus_open.3
new file mode 100644
index 0000000..f20ceba
--- /dev/null
+++ b/doc/man/bus_open.3
@@ -0,0 +1,67 @@
+.TH BUS_OPEN 3 BUS-%VERSION%
+.SH NAME
+bus_open - Open a bus
+.SH SYNOPSIS
+.LP
+.nf
+#include <bus.h>
+.P
+int bus_open(bus_t *\fIbus\fP, const char *\fIfile\fP, int \fIflags\fP);
+.fi
+.SH DESCRIPTION
+The
+.BR bus_open ()
+function acquires resources required for the process to use the bus
+associated with the filename stored in \fIfile\fP.  The function also
+stores the resource \fIbus\fP for use by other
+.BR bus ()
+functions.
+.PP
+Values for \fIflags\fP are constructed by a bitwise inclusive OR of
+flags from the following list.
+.TP
+.B BUS_RDONLY
+The process will only be using the bus for receiving messages.
+.TP
+.B BUS_WRONLY
+The process will only be using the bus for sending messages.
+.TP
+.B BUS_RDWR
+The process will use the bus for both receiving and sending messages.
+.SH RETURN VALUES
+Upon successful completion the function returns 0.  Otherwise the
+function returns -1 and set \fIerrno\fP to indicate the error.
+.SH ERRORS
+.TP
+.B ENOMEM
+The process cannot allocate more memory.
+.TP
+.B EACCES
+Operation permission is denied to the calling process.
+.TP
+.B EINVAL
+The described bus does not exist.
+.PP
+The
+.BR bus_open ()
+function may also fail and set \fIerrno\fP to any of the errors
+specified for the routine
+.BR open (2).
+.SH SEE ALSO
+.BR bus-create (1),
+.BR bus (5),
+.BR libbus (7),
+.BR bus_close (3),
+.BR bus_unlink (3),
+.BR bus_write (3),
+.BR bus_read (3),
+.BR bus_poll (3),
+.BR open (2)
+.SH AUTHORS
+Principal author, Mattias Andrée.  See the LICENSE file for the full
+list of authors.
+.SH LICENSE
+MIT/X Consortium License.
+.SH BUGS
+Please report bugs to https://github.com/maandree/bus/issues or to
+maandree@member.fsf.org