SES(4) | Device Drivers Manual | SES(4)

# NAME

`ses` —
SCSI Environmental Services Driver

# SYNOPSIS

`ses* at scsibus? target ? lun ?`

# DESCRIPTION

The `ses` driver provides support for all SCSI devices of the environmental services class that are attached to the system through a supported SCSI Host Adapter, as well as emulated support for SAF-TE (SCSI Accessible Fault Tolerant Enclosures). The environmental services class generally are enclosure devices that provide environmental information such as number of power supplies (and state), temperature, device slots, and so on.

A SCSI Host adapter must also be separately configured into the system before a SCSI Environmental Services device can be configured.

# IOCTLS

The following ioctl(2) calls apply to SES devices. They are defined in the header file `<scsipi/ses.h>` (q.v.).

`SESIOC_GETNOBJ`
  Used to find out how many SES objects are driven by this particular device instance.
`SESIOC_GETOBJMAP`
  Read, from the kernel, an array of SES objects which contains the object identifier, which sub-enclosure it is in, and the SES type of the object.
`SESIOC_GETENCSTAT`
  Get the overall enclosure status.
`SESIOC_SETENCSTAT`
  Set the overall enclosure status.
`SESIOC_GETOBJSTAT`
  Get the status of a particular object.
`SESIOC_SETOBJSTAT`
  Set the status of a particular object.
`SESIOC_GETTEXT`
  Get the associated help text for an object (not yet implemented). SES devices often have descriptive text for an object which can tell you things like location (e.g, "left power supply").
`SESIOC_INIT`
  Initialize the enclosure.

# FILES

/dev/ses N
  The Nth `ses` device.

# DIAGNOSTICS

When the kernel is configured with DEBUG enabled, the first open to an SES device will spit out overall enclosure parameters to the console.

# SEE ALSO

getencstat(8), sesd(8), setencstat(8), setobjstat(8)

# HISTORY

The `ses` driver was written for the SCSI subsystem by Matthew Jacob. This is the functional equivalent of a similar driver available in Solaris, Release 7.

May 24, 2007 | NetBSD 10.1