[src/trunk]: src/usr.sbin/sysinst Before forcing MBR partitions into our disk...

[martin <martin%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a740a9aed3c2
branches:  trunk
changeset: 1015090:a740a9aed3c2
user:      martin <martin%NetBSD.org@localhost>
date:      Tue Oct 13 10:43:23 2020 +0000

description:
Before forcing MBR partitions into our disklabel, make sure they are not
there yet - could happen in various paths when reusing existing partitions
(or parts of that) - previously we would blindly duplicate identical
partitions.

diffstat:

 usr.sbin/sysinst/bsddisklabel.c |  56 +++++++++++++++++++++++++++-------------
 1 files changed, 37 insertions(+), 19 deletions(-)

diffs (72 lines):

diff -r 269165b4a087 -r a740a9aed3c2 usr.sbin/sysinst/bsddisklabel.c
--- a/usr.sbin/sysinst/bsddisklabel.c   Tue Oct 13 09:10:38 2020 +0000
+++ b/usr.sbin/sysinst/bsddisklabel.c   Tue Oct 13 10:43:23 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: bsddisklabel.c,v 1.53 2020/10/12 16:27:23 martin Exp $ */
+/*     $NetBSD: bsddisklabel.c,v 1.54 2020/10/13 10:43:23 martin Exp $ */
 
 /*
  * Copyright 1997 Piermont Information Systems Inc.
@@ -1615,26 +1615,44 @@
                    (PUIFLG_ADD_INNER|PUIFLG_IS_OUTER))
                        continue;
 
-               infos[i].start = want->cur_start;
-               infos[i].size = want->size;
-               infos[i].nat_type = wanted->parts->pscheme->get_fs_part_type(
-                   want->type, want->fs_type, want->fs_version);
-               infos[i].last_mounted = want->mount;
-               infos[i].fs_type = want->fs_type;
-               infos[i].fs_sub_type = want->fs_version;
+               new_part_id = NO_PART;
+               for (part_id j = 0; new_part_id == NO_PART &&
+                   j < wanted->parts->num_part; j++) {
+                       struct disk_part_info test;
+
+                       if (!wanted->parts->pscheme->get_part_info(
+                           wanted->parts, j, &test))
+                               continue;
+                       if (test.start == want->cur_start &&
+                           test.size == want->size)
+                               new_part_id = j;
+               }
 
-               if (wanted->parts->pscheme->add_outer_partition
-                   != NULL)
-                       new_part_id = wanted->parts->pscheme->
-                           add_outer_partition(
-                           wanted->parts, &infos[i], NULL);
-               else
-                       new_part_id = wanted->parts->pscheme->
-                           add_partition(
-                           wanted->parts, &infos[i], NULL);
+               if (new_part_id == NO_PART) {
+                       infos[i].start = want->cur_start;
+                       infos[i].size = want->size;
+                       infos[i].nat_type = wanted->parts->pscheme->
+                           get_fs_part_type(want->type, want->fs_type,
+                           want->fs_version);
+                       infos[i].last_mounted = want->mount;
+                       infos[i].fs_type = want->fs_type;
+                       infos[i].fs_sub_type = want->fs_version;
+                       infos[i].fs_opt1 = want->fs_opt1;
+                       infos[i].fs_opt2 = want->fs_opt2;
+
+                       if (wanted->parts->pscheme->add_outer_partition
+                           != NULL)
+                               new_part_id = wanted->parts->pscheme->
+                                   add_outer_partition(
+                                   wanted->parts, &infos[i], NULL);
+                       else
+                               new_part_id = wanted->parts->pscheme->
+                                   add_partition(
+                                   wanted->parts, &infos[i], NULL);
                
-               if (new_part_id == NO_PART)
-                       continue;       /* failed to add, skip */
+                       if (new_part_id == NO_PART)
+                               continue;       /* failed to add, skip */
+               }
 
                wanted->parts->pscheme->get_part_info(
                    wanted->parts, new_part_id, &infos[i]);