Date: Fri, 11 Jan 2019 11:42:26 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r342938 - stable/12/sys/cam/scsi Message-ID: <201901111142.x0BBgQdJ016491@repo.freebsd.org>
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Author: avg Date: Fri Jan 11 11:42:25 2019 New Revision: 342938 URL: https://svnweb.freebsd.org/changeset/base/342938 Log: MFC r342169: add a knob that disables detection of write protected disks PR: 225794 Modified: stable/12/sys/cam/scsi/scsi_da.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/cam/scsi/scsi_da.c ============================================================================== --- stable/12/sys/cam/scsi/scsi_da.c Fri Jan 11 11:32:46 2019 (r342937) +++ stable/12/sys/cam/scsi/scsi_da.c Fri Jan 11 11:42:25 2019 (r342938) @@ -1466,6 +1466,7 @@ static int da_retry_count = DA_DEFAULT_RETRY; static int da_default_timeout = DA_DEFAULT_TIMEOUT; static sbintime_t da_default_softtimeout = DA_DEFAULT_SOFTTIMEOUT; static int da_send_ordered = DA_DEFAULT_SEND_ORDERED; +static int da_disable_wp_detection = 0; static SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0, "CAM Direct Access Disk driver"); @@ -1477,6 +1478,9 @@ SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CT &da_default_timeout, 0, "Normal I/O timeout (in seconds)"); SYSCTL_INT(_kern_cam_da, OID_AUTO, send_ordered, CTLFLAG_RWTUN, &da_send_ordered, 0, "Send Ordered Tags"); +SYSCTL_INT(_kern_cam_da, OID_AUTO, disable_wp_detection, CTLFLAG_RWTUN, + &da_disable_wp_detection, 0, + "Disable detection of write-protected disks"); SYSCTL_PROC(_kern_cam_da, OID_AUTO, default_softtimeout, CTLTYPE_UINT | CTLFLAG_RW, NULL, 0, dasysctlsofttimeout, "I", @@ -3320,12 +3324,22 @@ out: void *mode_buf; int mode_buf_len; + if (da_disable_wp_detection) { + if ((softc->flags & DA_FLAG_CAN_RC16) != 0) + softc->state = DA_STATE_PROBE_RC16; + else + softc->state = DA_STATE_PROBE_RC; + goto skipstate; + } mode_buf_len = 192; mode_buf = malloc(mode_buf_len, M_SCSIDA, M_NOWAIT); if (mode_buf == NULL) { xpt_print(periph->path, "Unable to send mode sense - " "malloc failure\n"); - softc->state = DA_STATE_PROBE_RC; + if ((softc->flags & DA_FLAG_CAN_RC16) != 0) + softc->state = DA_STATE_PROBE_RC16; + else + softc->state = DA_STATE_PROBE_RC; goto skipstate; } scsi_mode_sense_len(&start_ccb->csio,
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