0417c3cdb2
- tests: t3000-resize-fs.sh: Add requirement on mkfs.vfat (mike.fleetwood) - tests: t3000-resize-fs.sh: Add FAT16 resizing test (mike.fleetwood) - lib-fs-resize: Prevent crash resizing FAT16 file systems (mike.fleetwood) - libparted: also link to UUID_LIBS (heirecka)
70 lines
2.5 KiB
Diff
70 lines
2.5 KiB
Diff
From 1e9e770f4bc7f3d80e09ecd1df58575fad064163 Mon Sep 17 00:00:00 2001
|
|
From: Mike Fleetwood <mike.fleetwood@googlemail.com>
|
|
Date: Sun, 28 Sep 2014 16:15:48 +0100
|
|
Subject: [PATCH 4/6] lib-fs-resize: Prevent crash resizing FAT16 file systems
|
|
|
|
Resizing FAT16 file system crashes in libparted/fs/r/fat/resize.c
|
|
create_resize_context() because it was dereferencing NULL pointer
|
|
fs_info->info_sector to copy the info_sector.
|
|
|
|
Only FAT32 file systems have info_sector populated by fat_open() ->
|
|
fat_info_sector_read(). FAT12 and FAT16 file systems don't have an
|
|
info_sector so pointer fs_info->info_sector remains assigned NULL from
|
|
fat_alloc(). When resizing a FAT file system create_resize_context()
|
|
was always dereferencing fs_info->info_sector to memory copy the
|
|
info_sector, hence it crashed for FAT12 and FAT16.
|
|
|
|
Make create_resize_context() only copy the info_sector for FAT32 file
|
|
systems.
|
|
|
|
Reported by Christian Hesse in
|
|
https://bugzilla.gnome.org/show_bug.cgi?id=735669
|
|
---
|
|
NEWS | 4 ++++
|
|
libparted/fs/r/fat/resize.c | 12 +++++++++---
|
|
2 files changed, 13 insertions(+), 3 deletions(-)
|
|
|
|
diff --git a/NEWS b/NEWS
|
|
index 297b0a5..da7db50 100644
|
|
--- a/NEWS
|
|
+++ b/NEWS
|
|
@@ -2,6 +2,10 @@ GNU parted NEWS -*- outline -*-
|
|
|
|
* Noteworthy changes in release ?.? (????-??-??) [?]
|
|
|
|
+** Bug Fixes
|
|
+
|
|
+ libparted-fs-resize: Prevent crash resizing FAT16 file systems.
|
|
+
|
|
|
|
* Noteworthy changes in release 3.2 (2014-07-28) [stable]
|
|
|
|
diff --git a/libparted/fs/r/fat/resize.c b/libparted/fs/r/fat/resize.c
|
|
index 919acf0..bfe60a0 100644
|
|
--- a/libparted/fs/r/fat/resize.c
|
|
+++ b/libparted/fs/r/fat/resize.c
|
|
@@ -668,11 +668,17 @@ create_resize_context (PedFileSystem* fs, const PedGeometry* new_geom)
|
|
|
|
/* preserve boot code, etc. */
|
|
new_fs_info->boot_sector = ped_malloc (new_geom->dev->sector_size);
|
|
- new_fs_info->info_sector = ped_malloc (new_geom->dev->sector_size);
|
|
memcpy (new_fs_info->boot_sector, fs_info->boot_sector,
|
|
new_geom->dev->sector_size);
|
|
- memcpy (new_fs_info->info_sector, fs_info->info_sector,
|
|
- new_geom->dev->sector_size);
|
|
+ new_fs_info->info_sector = NULL;
|
|
+ if (fs_info->fat_type == FAT_TYPE_FAT32)
|
|
+ {
|
|
+ PED_ASSERT (fs_info->info_sector != NULL);
|
|
+ new_fs_info->info_sector =
|
|
+ ped_malloc (new_geom->dev->sector_size);
|
|
+ memcpy (new_fs_info->info_sector, fs_info->info_sector,
|
|
+ new_geom->dev->sector_size);
|
|
+ }
|
|
|
|
new_fs_info->logical_sector_size = fs_info->logical_sector_size;
|
|
new_fs_info->sector_count = new_geom->length;
|
|
--
|
|
1.9.3
|
|
|