1 .. -*- coding: utf-8; mode: rst -*-
14 .. attention:: This ioctl is deprecated
19 .. c:function:: int open(const char *deviceName, int flags)
33 - const char \*deviceName
35 - Name of specific audio device.
41 - A bit-wise OR of the following flags:
46 - O_RDONLY read-only access
51 - O_RDWR read/write access
56 - O_NONBLOCK open in non-blocking mode
61 - (blocking mode is the default)
67 This system call opens a named audio device (e.g.
68 /dev/dvb/adapter0/audio0) for subsequent use. When an open() call has
69 succeeded, the device will be ready for use. The significance of
70 blocking or non-blocking mode is described in the documentation for
71 functions where there is a difference. It does not affect the semantics
72 of the open() call itself. A device opened in blocking mode can later be
73 put into non-blocking mode (and vice versa) using the F_SETFL command
74 of the fcntl system call. This is a standard system call, documented in
75 the Linux manual page for fcntl. Only one user can open the Audio Device
76 in O_RDWR mode. All other attempts to open the device in this mode will
77 fail, and an error code will be returned. If the Audio Device is opened
78 in O_RDONLY mode, the only ioctl call that can be used is
79 AUDIO_GET_STATUS. All other call will return with an error code.
85 .. tabularcolumns:: |p{2.5cm}|p{15.0cm}|
96 - Device driver not loaded/available.
102 - Device or resource busy.