git: 8f5c107656c4 - stable/13 - camcontrol fwdownload minor improvements

The branch stable/13 has been updated by imp:

URL: https://cgit.FreeBSD.org/src/commit/?id=8f5c107656c4aca6fac52f3e5a510a8a9cc67c89

commit 8f5c107656c4aca6fac52f3e5a510a8a9cc67c89
Author:     Warner Losh <imp@FreeBSD.org>
AuthorDate: 2022-02-22 21:25:32 +0000
Commit:     Warner Losh <imp@FreeBSD.org>
CommitDate: 2022-03-09 20:52:23 +0000

    camcontrol fwdownload minor improvements
    
    Minor improvements to the fwdownload code suggested by chs@:
    o Print the path_id/target we're rescanning so it's not invisible
    o No need for XPT_GDEVLIST, all the info is filled in. Remove sending it
      as well as a comment related to it from a mistaken observation. libcam
      always fills these in properly, so use those for the ccb path/target.
    o Don't leak /dev/xpt fd in success cases.
    o Rename fw_rescan_lun to fw_rescan_target and pass sim_mode to
      only print path_id and target_id info.
    
    Reviewed by:            chs@
    Fixes:                  9835900cb95bcd068774934961fb1419719d595b
    Sponsored by:           Netflix
    MFC After:              1 week
    Differential Revision:  https://reviews.freebsd.org/D34348
    
    (cherry picked from commit 78fbaa1fac2677feeb2094048d77587a2ab80d11)
---
 sbin/camcontrol/fwdownload.c | 32 ++++++++++++--------------------
 1 file changed, 12 insertions(+), 20 deletions(-)

diff --git a/sbin/camcontrol/fwdownload.c b/sbin/camcontrol/fwdownload.c
index 56ccaaac1e59..038c4a836878 100644
--- a/sbin/camcontrol/fwdownload.c
+++ b/sbin/camcontrol/fwdownload.c
@@ -776,12 +776,15 @@ bailout:
  * download.
  */
 static int
-fw_rescan_lun(struct cam_device *dev, bool printerrors)
+fw_rescan_target(struct cam_device *dev, bool printerrors, bool sim_mode)
 {
 	union ccb ccb;
 	int fd;
-	target_id_t target;
-	uint32_t bus;
+
+	printf("Rescanning target %d:%d:* to pick up new fw revision / parameters.\n",
+	    dev->path_id, dev->target_id);
+	if (sim_mode)
+		return (0);
 
 	/* Can only send XPT_SCAN_TGT via /dev/xpt, not pass device in *dev */
 	if ((fd = open(XPT_DEVICE, O_RDWR)) < 0) {
@@ -791,24 +794,11 @@ fw_rescan_lun(struct cam_device *dev, bool printerrors)
 		return (1);
 	}
 
-	/* Fill in the bus and target IDs as they don't seem to be in *dev */
-	bzero(&ccb, sizeof(union ccb));
-	ccb.ccb_h.func_code = XPT_GDEVLIST;
-	strlcpy(ccb.cgdl.periph_name, dev->device_name, sizeof(ccb.cgdl.periph_name));
-	ccb.cgdl.unit_number = dev->dev_unit_num;
-	if (cam_send_ccb(dev, &ccb) < 0) {
-		warn("send_ccb GDEVLIST failed\n");
-		close(fd);
-		return (1);
-	}
-	bus = ccb.ccb_h.path_id;
-	target = ccb.ccb_h.target_id;
-
 	/* Rescan the target */
 	bzero(&ccb, sizeof(union ccb));
 	ccb.ccb_h.func_code = XPT_SCAN_TGT;
-	ccb.ccb_h.path_id = bus;
-	ccb.ccb_h.target_id = target;
+	ccb.ccb_h.path_id = dev->path_id;
+	ccb.ccb_h.target_id = dev->target_id;
 	ccb.ccb_h.target_lun = CAM_LUN_WILDCARD;
 	ccb.crcn.flags = CAM_EXPECT_INQ_CHANGE;
 	ccb.ccb_h.pinfo.priority = 5;	/* run this at a low priority */
@@ -823,8 +813,10 @@ fw_rescan_lun(struct cam_device *dev, bool printerrors)
 		if (printerrors)
 			cam_error_print(dev, &ccb, CAM_ESF_ALL, CAM_EPF_ALL,
 			    stderr);
+		close(fd);
 		return (1);
 	}
+	close(fd);
 	return (0);
 }
 
@@ -983,8 +975,8 @@ bailout:
 	if (quiet == 0)
 		progress_complete(&progress, size - img_size);
 	cam_freeccb(ccb);
-	if (retval == 0 && !sim_mode) {
-		fw_rescan_lun(cam_dev, printerrors);
+	if (retval == 0) {
+		fw_rescan_target(cam_dev, printerrors, sim_mode);
 	}
 	return (retval);
 }