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test: add prin_report_caps() helper function

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Issue a Persistent Reservation In REPORT CAPABILITIES request and parse
the response. Callers can obtain the unmarshalled response data via the
_rcaps parameter.

Signed-off-by: David Disseldorp <ddiss@suse.de>
This commit is contained in:
David Disseldorp
2015-09-24 16:38:48 +02:00
parent ef8e59a24d
commit 9c524b37fa
2 changed files with 48 additions and 0 deletions
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46
test-tool/iscsi-support.c
View File

@@ -1155,6 +1155,52 @@ prin_verify_not_reserved(struct scsi_device *sdev)
return ret;
}
int
prin_report_caps(struct scsi_device *sdev, struct scsi_task **tp,
struct scsi_persistent_reserve_in_report_capabilities **_rcaps)
{
const int buf_sz = 16384;
struct scsi_persistent_reserve_in_report_capabilities *rcaps = NULL;
logging(LOG_VERBOSE, "Send PRIN/REPORT_CAPABILITIES");
*tp = scsi_cdb_persistent_reserve_in(
SCSI_PERSISTENT_RESERVE_REPORT_CAPABILITIES,
buf_sz);
assert(*tp != NULL);
*tp = send_scsi_command(sdev, *tp, NULL);
if (*tp == NULL) {
logging(LOG_NORMAL,
"[FAILED] Failed to send PRIN command: %s",
iscsi_get_error(sdev->iscsi_ctx));
return -1;
}
if (status_is_invalid_opcode(*tp)) {
logging(LOG_NORMAL,
"[SKIPPED] PERSISTENT RESERVE IN is not implemented.");
return -2;
}
if ((*tp)->status != SCSI_STATUS_GOOD) {
logging(LOG_NORMAL,
"[FAILED] PRIN command: failed with sense. %s",
iscsi_get_error(sdev->iscsi_ctx));
return -1;
}
rcaps = scsi_datain_unmarshall(*tp);
if (rcaps == NULL) {
logging(LOG_NORMAL,
"[FAIL] failed to unmarshall PRIN/REPORT_CAPABILITIES "
"data. %s", iscsi_get_error(sdev->iscsi_ctx));
return -1;
}
if (_rcaps != NULL)
*_rcaps = rcaps;
return 0;
}
int
verify_read_works(struct scsi_device *sdev, unsigned char *buf)
{

2
test-tool/iscsi-support.h
View File

@@ -277,6 +277,8 @@ int prout_clear(struct scsi_device *sdev, unsigned long long key);
int prin_verify_not_reserved(struct scsi_device *sdev);
int prin_verify_reserved_as(struct scsi_device *sdev,
unsigned long long key, enum scsi_persistent_out_type pr_type);
int prin_report_caps(struct scsi_device *sdev, struct scsi_task **tp,
struct scsi_persistent_reserve_in_report_capabilities **_rcaps);
int verify_read_works(struct scsi_device *sdev, unsigned char *buf);
int verify_write_works(struct scsi_device *sdev, unsigned char *buf);
int verify_read_fails(struct scsi_device *sdev, unsigned char *buf);