.TH BUS_CHMOD 3 BUS-%VERSION%
.SH NAME
bus_chmod - Change bus mode bits
.SH SYNOPSIS
#include <bus.h>

int bus_chmod(const char *file, mode_t mode);
.SH DESCRIPTION
The \fIbus_chmod()\fP function gives access to the bus associated with
\fIfile\fP according to the following rules:
.TP
*
If (\fImode\fP &S_IRWXU) the owner should be given full access to the
bus. Otherwise the owner should have no access.
.TP
*
If (\fImode\fP &S_IRWXG) the group should be given read and write
access to the bus. Otherwise the group should have no access.
.TP
*
If (\fImode\fP &S_IRWXO) others (except the group) should be given
read and write access to the bus. Otherwise others should have no
access.
.SH RETURN VALUES
Upon successful completion, the function returns 0.  Otherwise the
function returns -1 and sets \fIerrno\fP to indicate the error.
.SH ERRORS
The
.BR bus_chown(3)
function may fail and set \fIerrno\fP to any of the
errors specified for
.BR bus_open(3),
.BR chmod(3),
.BR semget(3),
.BR shmget(3)
and
.BR shmctl(3)
as well as any errors specified for the \fIIPC_STAT\fP and
\fIIPC_SET\fP commands for
.BR semctl(3).
.SH SEE ALSO
bus-create(1), bus(5), libbus(7), bus_open(3), bus_read(3)
.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