blk_fill_sghdr_rq

Name:blk_fill_sghdr_rq

Proto:static int blk_fill_sghdr_rq(struct request_queue *q, struct request *rq, struct sg_io_hdr *hdr, fmode_t mode)

Type:int

Parameter:

Type	Parameter	Name
struct request_queue *	q
struct request *	rq
struct sg_io_hdr *	hdr
fmode_t	mode

221

req = scsi_req(rq)

223

If copy_from_user(cmd, [i], [*i] points to command to perform , [i] SCSI command length ) Then Return -EFAULT

225

If blk_verify_command(cmd, mode) Then Return -EPERM

231

cmd_len = [i] SCSI command length

233

timeout = msecs_to_jiffies: - convert milliseconds to jiffies*@m: time in milliseconds* conversion is done as follows:* - negative values mean 'infinite timeout' (MAX_JIFFY_OFFSET)* - 'too large' values [that would result in larger than

234

If Not timeout Then timeout = * sg stuff

236

If Not timeout Then timeout = default timeout for SG_IO if none specified

238

If timeout < BLK_MIN_SG_TIMEOUT Then timeout = BLK_MIN_SG_TIMEOUT

241

Return 0

**Caller**
Name	Describe
sg_io

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