other versions
| SCSI_GET_VPD_PAGE(9) | SCSI mid layer | SCSI_GET_VPD_PAGE(9) |
NAME¶
scsi_get_vpd_page - Get Vital Product Data from a SCSI device
SYNOPSIS¶
int scsi_get_vpd_page(struct scsi_device * sdev, u8 page, unsigned char * buf, int buf_len);
ARGUMENTS¶
struct scsi_device * sdev
The device to ask
u8 page
Which Vital Product Data to return
unsigned char * buf
where to store the VPD
int buf_len
number of bytes in the VPD buffer area
DESCRIPTION¶
SCSI devices may optionally supply Vital Product Data. Each 'page' of VPD is defined in the appropriate SCSI document (eg SPC, SBC). If the device supports this VPD page, this routine returns a pointer to a buffer containing the data from that page. The caller is responsible for calling kfree on this pointer when it is no longer needed. If we cannot retrieve the VPD page this routine returns NULL.
AUTHORS¶
James Bottomley <James.Bottomley@hansenpartnership.com>
Author.
Rob Landley <rob@landley.net>
Author.
COPYRIGHT¶
| July 2017 | Kernel Hackers Manual 4.12 |