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| author | Ludovic Courtès <ludo@gnu.org> | 2019-04-21 00:46:44 +0200 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2019-04-21 00:51:19 +0200 |
| commit | 1b0b1651b16bd67fa5a583cfe6ce98ac9df80e56 (patch) | |
| tree | d269cb07b7a5c027748652eaad94834188ccfe9e /gnu/packages | |
| parent | 5502fbd7fd8073e7eeb0b447530d7c88c1b79367 (diff) | |
| download | guix-1b0b1651b16bd67fa5a583cfe6ce98ac9df80e56.tar.gz guix-1b0b1651b16bd67fa5a583cfe6ce98ac9df80e56.zip | |
gnu: mtools: 'mformat' initializes boot sector before writing it.
This is the last bit fixing <https://bugs.gnu.org/35283>.
Previously, 'mformat' (used by 'grub-mkrescue') would pass uninitialized
bytes to write(2), leading to non-deterministic FAT image contents.
This patch fixes that.
* gnu/packages/patches/mtools-mformat-uninitialized.patch: New file.
* gnu/packages/mtools.scm (mtools)[source]: Use it.
* gnu/local.mk (dist_patch_DATA): Add it.
Diffstat (limited to 'gnu/packages')
| -rw-r--r-- | gnu/packages/mtools.scm | 22 | ||||
| -rw-r--r-- | gnu/packages/patches/mtools-mformat-uninitialized.patch | 20 |
2 files changed, 32 insertions, 10 deletions
diff --git a/gnu/packages/mtools.scm b/gnu/packages/mtools.scm index 5be3da0137..b93d5789b9 100644 --- a/gnu/packages/mtools.scm +++ b/gnu/packages/mtools.scm @@ -1,6 +1,6 @@ ;;; GNU Guix --- Functional package management for GNU ;;; Copyright © 2013 John Darrington <jmd@gnu.org> -;;; Copyright © 2015 Ludovic Courtès <ludo@gnu.org> +;;; Copyright © 2015, 2019 Ludovic Courtès <ludo@gnu.org> ;;; Copyright © 2018 Tobias Geerinckx-Rice <me@tobias.gr> ;;; Copyright © 2018 Efraim Flashner <efraim@flashner.co.il> ;;; @@ -23,20 +23,22 @@ #:use-module (guix licenses) #:use-module (guix packages) #:use-module (guix download) - #:use-module (guix build-system gnu)) + #:use-module (guix build-system gnu) + #:use-module (gnu packages)) (define-public mtools (package (name "mtools") (version "4.0.23") - (source - (origin - (method url-fetch) - (uri (string-append "mirror://gnu/mtools/mtools-" - version ".tar.bz2")) - (sha256 - (base32 - "1qwfxzr964fasxlzhllahk8mzh7c82s808wvly95dsqsflkdp27i")))) + (source (origin + (method url-fetch) + (uri (string-append "mirror://gnu/mtools/mtools-" + version ".tar.bz2")) + (sha256 + (base32 + "1qwfxzr964fasxlzhllahk8mzh7c82s808wvly95dsqsflkdp27i")) + (patches + (search-patches "mtools-mformat-uninitialized.patch")))) (build-system gnu-build-system) (home-page "https://www.gnu.org/software/mtools/") (synopsis "Access MS-DOS disks without mounting") diff --git a/gnu/packages/patches/mtools-mformat-uninitialized.patch b/gnu/packages/patches/mtools-mformat-uninitialized.patch new file mode 100644 index 0000000000..ae69d45c99 --- /dev/null +++ b/gnu/packages/patches/mtools-mformat-uninitialized.patch @@ -0,0 +1,20 @@ +Fix a bug whereby 'mformat' could end up passing uninitialized bytes +to write(2). This could be reproduced with: + + mformat -C -f 1440 -L 16 -N 77777777 -i /tmp/x :: + +where the output of /tmp/x would be non-deterministic. + +Patch by Ludovic Courtès <ludo@gnu.org>. + +--- mtools-4.0.23/mformat.c 2019-04-21 00:12:01.496116195 +0200 ++++ mtools-4.0.23/mformat.c 2019-04-21 00:12:36.675967157 +0200 +@@ -927,6 +927,7 @@ void mformat(int argc, char **argv, int + + char *endptr; + ++ memset(&boot.bytes, '\0', sizeof boot); + hs = hs_set = 0; + argtracks = 0; + argheads = 0; + |