Change Details

The -t option gives the user the ability to create a control device for a given virtual_oss(8) instance, so that the instance's configuration can be manipulated during runtime with virtual_oss_cmd(8). As is expected, the control device's name is not known, since it is specified by the user. This patch hardcodes the control device's name to "vdsp.ctl" when virtual_oss(8) replaces sound(4)'s /dev/dsp with its own, i.e., when "-d dsp" is specified. The goal of this hardcoding is that third-party programs and scripts can access the control device for the virtual_oss(8)-created /dev/dsp without guessing. This is especially useful for sbin/devd/snd.conf which deals with hot-swapping sound devices using virtual_oss(8). There are a few side effects with this patch: 1. Configurations that specify "-d dsp" cannot use the -t option at all, because the control device is hardcoded to "vdsp.ctl" and cannot be overwritten. 2. "-t vdsp.ctl" can be manually specified only when the virtual_oss(8) sound device is not /dev/dsp. This, as is logical, cannot be done at the same time another virtual_oss(8) instance which specifies "-d dsp" is running, because either the first instance will reserve the name, or the instance which specified "-d dsp" will not the other instance use that device name. Sponsored by: The FreeBSD Foundation MFC after: 1 week

The -t option gives the user the ability to create a control device for a given virtual_oss(8) instance, so that the instance's configuration can be manipulated during runtime with virtual_oss_cmd(8). As is expected, the control device's name is not known, since it is specified by the user. This patch introduces a virtual_oss_default_control_device rc variable, which defaults to "vdsp.ctl". The goal of this is that third-party programs and scripts can access the control device of the default virtual_oss(8) configuration without guessing. This is especially useful for sbin/devd/snd.conf which deals with hot-swapping sound devices using virtual_oss(8). Sponsored by: The FreeBSD Foundation MFC after: 1 week

The -t option gives the user the ability to create a control device for a given virtual_oss(8) instance, so that the instance's configuration can be manipulated during runtime with virtual_oss_cmd(8). As is expected, the control device's name is not known, since it is specified by the user. This patch hardcodes the control device's name to "vdsp.ctl" whenintroduces a virtual_oss_default_control_device rc variable, virtual_oss(8) replaces sound(4)'s /dev/dsp with its own, i.e.,which defaults to "vdsp.ctl". when "-dThe goal of this is that third-party dsp" is specified. The goal of this hardcoding is that third-partyprograms and scripts can access the control device of the default programs and scripts can access the control device for thevirtual_oss(8) configuration without guessing. This is especially useful virtual_oss(8)-created /dev/dspfor sbin/devd/snd.conf which deals without guessing. This is especially hot-swapping sound devices using useful for sbin/devd/snd.conf which deals with hot-swapping sound devices using virtual_oss(8). There are a few side effects with this patch: 1. Configurations that specify "-d dsp" cannot use the -t option at all, because the control device is hardcoded to "vdsp.ctl" and cannot be overwritten. 2. "-t vdsp.ctl" can be manually specified only when the virtual_oss(8) sound device is not /dev/dsp. This, as is logical, cannot be done at the same time another virtual_oss(8) instance which specifies "-d dsp" is running, because either the first instance will reserve the name, or the instance which specified "-d dsp" will not the other instance use that device namevirtual_oss(8). Sponsored by: The FreeBSD Foundation MFC after: 1 week