Author: mav
Date: Fri Sep 13 15:18:28 2019
New Revision: 352292
URL: https://svnweb.freebsd.org/changeset/base/352292

Log:
  MFC r352111: Initialize page/subpage in case of `modepage -d`.
  
  Previously without -m parameter it worked mostly by concodence.
  
  While there, make page/subpage values validation more strict.

Modified:
  stable/12/sbin/camcontrol/camcontrol.c
Directory Properties:
  stable/12/   (props changed)

Modified: stable/12/sbin/camcontrol/camcontrol.c
==============================================================================
--- stable/12/sbin/camcontrol/camcontrol.c      Fri Sep 13 15:17:30 2019        
(r352291)
+++ stable/12/sbin/camcontrol/camcontrol.c      Fri Sep 13 15:18:28 2019        
(r352292)
@@ -4574,7 +4574,7 @@ modepage(struct cam_device *device, int argc, char **a
         int task_attr, int retry_count, int timeout)
 {
        char *str_subpage;
-       int c, page = -1, subpage = -1, pc = 0, llbaa = 0;
+       int c, page = -1, subpage = 0, pc = 0, llbaa = 0;
        int binary = 0, cdb_len = 10, dbd = 0, desc = 0, edit = 0, list = 0;
 
        while ((c = getopt(argc, argv, combinedopt)) != -1) {
@@ -4600,11 +4600,9 @@ modepage(struct cam_device *device, int argc, char **a
                        page = strtol(optarg, NULL, 0);
                        if (str_subpage)
                            subpage = strtol(str_subpage, NULL, 0);
-                       else
-                           subpage = 0;
-                       if (page < 0)
+                       if (page < 0 || page > 0x3f)
                                errx(1, "invalid mode page %d", page);
-                       if (subpage < 0)
+                       if (subpage < 0 || subpage > 0xff)
                                errx(1, "invalid mode subpage %d", subpage);
                        break;
                case 'D':
@@ -4623,7 +4621,10 @@ modepage(struct cam_device *device, int argc, char **a
                }
        }
 
-       if (page == -1 && desc == 0 && list == 0)
+       if (desc && page == -1)
+               page = SMS_ALL_PAGES_PAGE;
+
+       if (page == -1 && list == 0)
                errx(1, "you must specify a mode page!");
 
        if (dbd && desc)
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