>From 4d2dd49b86c057ccfd0cd818b7f0907a90c9a24a Mon Sep 17 00:00:00 2001
From: Ronnie Sahlberg <[EMAIL PROTECTED]>
Date: Fri, 2 May 2008 22:41:50 +1000
Subject: [PATCH 7/7] change how we handle dvdrecorder close track
dvdrecorder uses the reserve_track command before starting to write data.
pull the size of the full track from the cdb and store it in the mmc
structure.
once we see a write command where offset+length is equal to this track size
we consider the burning complete and morph the device into DVD-ROM
Signed-off-by: Ronnie Sahlberg <[EMAIL PROTECTED]>
---
usr/mmc.c | 33 +++++++++++++++++++++++++--------
1 files changed, 25 insertions(+), 8 deletions(-)
diff --git a/usr/mmc.c b/usr/mmc.c
index d075b23..9e52845 100644
--- a/usr/mmc.c
+++ b/usr/mmc.c
@@ -54,6 +54,7 @@
struct mmc_info {
int current_profile;
+ uint64_t reserve_track_len;
};
static int mmc_rw(int host_no, struct scsi_cmd *cmd)
@@ -61,6 +62,7 @@ static int mmc_rw(int host_no, struct scsi_cmd *cmd)
struct mmc_info *mmc = (struct mmc_info *)cmd->dev->mmc_p;
int ret;
uint64_t end_offset;
+ uint64_t offset, length;
if (mmc->current_profile == PROFILE_NO_PROFILE) {
scsi_set_in_resid_by_actual(cmd, 0);
@@ -97,11 +99,13 @@ static int mmc_rw(int host_no, struct scsi_cmd *cmd)
cmd->scsi_cmd_done = target_cmd_io_done;
- cmd->offset = (scsi_rw_offset(cmd->scb) << MMC_BLK_SHIFT);
+ offset = scsi_rw_offset(cmd->scb);
+ cmd->offset = (offset << MMC_BLK_SHIFT);
/* update the size of the device */
- end_offset = cmd->offset +
- (((uint64_t)scsi_rw_count(cmd->scb)) << MMC_BLK_SHIFT);
+ length = scsi_rw_count(cmd->scb);
+ end_offset = cmd->offset + (length << MMC_BLK_SHIFT);
+
if (end_offset > cmd->dev->size)
cmd->dev->size = end_offset;
@@ -116,10 +120,17 @@ static int mmc_rw(int host_no, struct scsi_cmd *cmd)
sense_data_build(cmd, ILLEGAL_REQUEST, ASC_LUN_NOT_SUPPORTED);
return SAM_STAT_CHECK_CONDITION;
} else {
+ if ((mmc->current_profile == PROFILE_DVD_PLUS_R) &&
+ (mmc->reserve_track_len == (offset + length))) {
+ /* once we close the track it becomes a DVD_ROM */
+ mmc->current_profile = PROFILE_DVD_ROM;
+ }
+
set_cmd_mmapio(cmd);
return SAM_STAT_GOOD;
}
+
return 0;
}
@@ -1455,11 +1466,6 @@ static int mmc_synchronize_cache(int host_no,
struct scsi_cmd *cmd)
return SAM_STAT_CHECK_CONDITION;
}
- if (mmc->current_profile == PROFILE_DVD_PLUS_R) {
- /* once we close the track it becomes a DVD_ROM */
- mmc->current_profile = PROFILE_DVD_ROM;
- }
-
return SAM_STAT_GOOD;
}
@@ -2154,6 +2160,16 @@ static int mmc_read_dvd_structure(int host_no,
struct scsi_cmd *cmd)
static int mmc_reserve_track(int host_no, struct scsi_cmd *cmd)
{
+ struct mmc_info *mmc = (struct mmc_info *)cmd->dev->mmc_p;
+ uint64_t tmp;
+
+ tmp = cmd->scb[5];
+ tmp = (tmp << 8) | cmd->scb[6];
+ tmp = (tmp << 8) | cmd->scb[7];
+ tmp = (tmp << 8) | cmd->scb[8];
+
+ mmc->reserve_track_len = tmp;
+
return SAM_STAT_GOOD;
}
@@ -2247,6 +2263,7 @@ static int mmc_lu_online(struct scsi_lu *lu)
struct stat st;
mmc->current_profile = PROFILE_NO_PROFILE;
+ mmc->reserve_track_len = 0;
if (lu->fd == -1)
return TGTADM_INVALID_REQUEST;
--
1.5.5
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