[PATCH 0/4] Consolidate Checksums as common code
by Pino Toscano
Hi,
this small series moves the OCaml Checksums module from virt-builder to
mllib, adding more features to use it also for v2v.
Thanks,
Pino Toscano (4):
mllib: move Checksums from builder
mllib, builder: add and use Checksums.of_string
mllib: add SHA1 support in Checksums
v2v: -i ova: use Checksums
builder/Makefile.am | 2 --
builder/builder.ml | 6 +++-
builder/checksums.ml | 57 -----------------------------------
builder/checksums.mli | 33 --------------------
builder/simplestreams_parser.ml | 8 +++--
mllib/Makefile.am | 4 ++-
mllib/checksums.ml | 67 +++++++++++++++++++++++++++++++++++++++++
mllib/checksums.mli | 42 ++++++++++++++++++++++++++
v2v/input_ova.ml | 17 +++--------
9 files changed, 128 insertions(+), 108 deletions(-)
delete mode 100644 builder/checksums.ml
delete mode 100644 builder/checksums.mli
create mode 100644 mllib/checksums.ml
create mode 100644 mllib/checksums.mli
--
2.7.4
7 years, 7 months
[PATCH 1/2] v2v: ova: fix checking of the manifest file
by Tomáš Golembiovský
The regular expression for parsing the manifest line was wrong. There is
a mandatory space between '=' and the hash.
Another problem was that only the first line of the manifest file was
actually processed.
Also added some debugging info and warning to catch problems with
parsing.
Signed-off-by: Tomáš Golembiovský <tgolembi(a)redhat.com>
---
v2v/input_ova.ml | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/v2v/input_ova.ml b/v2v/input_ova.ml
index 4f848e2..513fe30 100644
--- a/v2v/input_ova.ml
+++ b/v2v/input_ova.ml
@@ -133,9 +133,10 @@ object
(* Read any .mf (manifest) files and verify sha1. *)
let mf = find_files exploded ".mf" in
- let rex = Str.regexp "SHA1(\\(.*\\))=\\([0-9a-fA-F]+\\)\r?" in
+ let rex = Str.regexp "SHA1(\\(.*\\))= \\([0-9a-fA-F]+\\)\r?" in
List.iter (
fun mf ->
+ debug "Processing manifest %s" mf;
let mf_folder = Filename.dirname mf in
let chan = open_in mf in
let rec loop () =
@@ -156,6 +157,11 @@ object
debug "sha1 of %s matches expected checksum %s" disk expected
| _::_ -> error (f_"cannot parse output of sha1sum command")
)
+ else
+ warning (f_"Unable to parse line from manifest file. Line is \"%s\"")
+ (String.replace line "\r" "")
+ ;
+ loop ()
in
(try loop () with End_of_file -> ());
close_in chan
--
2.10.0
7 years, 7 months
mount: unknown filesystem type 'exfat'
by Miles Wolbe
Hello,
Can anyone please tell me whether guestfish can mount exFAT partitions?
I created a full disk image of a drive which contained a single exFAT partition.
Was able to mount it with kpartx/FUSE:
# kpartx -a -v disk.img
add map loop0p1 (252:2): 0 39070078 linear 7:0 2
# mount /dev/mapper/loop0p1 /mnt -o ro
FUSE exfat 1.2.3
# ls /mnt
foo bar baz etc
but not guestfish:
$ sudo apt install libguestfs-tools
$ guestfish --version
guestfish 1.32.2
$ guestfish -a disk.img
...
><fs> run
...
><fs> list-filesystems
/dev/sda1: exfat
><fs> mount /dev/sda1 /
libguestfs: error: mount: /dev/sda1 on / (options: ''): mount: unknown filesystem type 'exfat'
><fs> q
Results identical under both Linux Mint 18 and Fedora 24 (which was running a slightly newer version of guestfish, 1.34.2).
Sincerely,
Miles
P.S. I read about installing libguestfs-winsupport for NTFS in the FAQ, but it appears to only be for RHEL: https://access.redhat.com/discussions/623573#comment-595723
7 years, 7 months
[PATCH] New tool: virt-tail.
by Richard W.M. Jones
This adds a new tool which does a follow operation (ie. tail -f)
on one or more log/text files inside the guest.
I've only done limited testing, but it works for me for tailing
various long-running builds inside guests which I'm doing at the
moment.
There are no tests at present.
Rich.
7 years, 7 months
[PATCH] customize: Add --append-line.
by Richard W.M. Jones
This appends a single line to a file, with some cleverness
involving guessing the right line endings to use.
Also adds a test.
---
builder/test-virt-builder.sh | 57 +++++++++++++++++++++++++++++++++++-
customize/Makefile.am | 2 ++
customize/append_line.ml | 70 ++++++++++++++++++++++++++++++++++++++++++++
customize/append_line.mli | 20 +++++++++++++
customize/customize_run.ml | 11 +++++++
generator/customize.ml | 34 +++++++++++++++++++++
6 files changed, 193 insertions(+), 1 deletion(-)
create mode 100644 customize/append_line.ml
create mode 100644 customize/append_line.mli
diff --git a/builder/test-virt-builder.sh b/builder/test-virt-builder.sh
index 2a9227b..80dcd98 100755
--- a/builder/test-virt-builder.sh
+++ b/builder/test-virt-builder.sh
@@ -70,6 +70,19 @@ $VG virt-builder phony-fedora \
--delete /Makefile \
--link /etc/foo/bar/baz/foo:/foo \
--link /etc/foo/bar/baz/foo:/foo1:/foo2:/foo3 \
+ --append-line '/etc/append1:hello' \
+ --append-line '/etc/append2:line1' \
+ --append-line '/etc/append2:line2' \
+ --write '/etc/append3:line1' \
+ --append-line '/etc/append3:line2' \
+ --write '/etc/append4:line1
+' \
+ --append-line '/etc/append4:line2' \
+ --touch /etc/append5 \
+ --append-line '/etc/append5:line1' \
+ --write '/etc/append6:
+' \
+ --append-line '/etc/append6:line2' \
--firstboot Makefile --firstboot-command 'echo "hello"' \
--firstboot-install "minicom,inkscape"
@@ -97,6 +110,24 @@ echo -----
# Password
is-file /etc/shadow
cat /etc/shadow | sed -r '/^root:/!d;s,^(root:\\\$6\\\$).*,\\1,g'
+
+echo -----
+# Line appending
+# Note that the guestfish 'cat' command appends a newline
+echo append1:
+cat /etc/append1
+echo append2:
+cat /etc/append2
+echo append3:
+cat /etc/append3
+echo append4:
+cat /etc/append4
+echo append5:
+cat /etc/append5
+echo append6:
+cat /etc/append6
+
+echo -----
EOF
if [ "$(cat test-virt-builder.out)" != "true
@@ -113,7 +144,31 @@ true
/usr/share/zoneinfo/Europe/London
-----
true
-root:\$6\$" ]; then
+root:\$6\$
+-----
+append1:
+hello
+
+append2:
+line1
+line2
+
+append3:
+line1
+line2
+
+append4:
+line1
+line2
+
+append5:
+line1
+
+append6:
+
+line2
+
+-----" ]; then
echo "$0: unexpected output:"
cat test-virt-builder.out
exit 1
diff --git a/customize/Makefile.am b/customize/Makefile.am
index ae37b51..ce5c662 100644
--- a/customize/Makefile.am
+++ b/customize/Makefile.am
@@ -34,6 +34,7 @@ generator_built = \
customize-synopsis.pod
SOURCES_MLI = \
+ append_line.mli \
crypt.mli \
customize_cmdline.mli \
customize_run.mli \
@@ -51,6 +52,7 @@ SOURCES_MLI = \
# This list must be in dependency order.
SOURCES_ML = \
customize_utils.ml \
+ append_line.ml \
crypt.ml \
firstboot.ml \
hostname.ml \
diff --git a/customize/append_line.ml b/customize/append_line.ml
new file mode 100644
index 0000000..0095ff6
--- /dev/null
+++ b/customize/append_line.ml
@@ -0,0 +1,70 @@
+(* virt-customize
+ * Copyright (C) 2016 Red Hat Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *)
+
+open Common_utils
+open Common_gettext.Gettext
+
+module G = Guestfs
+
+let append_line (g : G.guestfs) root path line =
+ (* The default line ending for this guest type. This is only
+ * used when we don't know anything more about the file.
+ *)
+ let default_newline () =
+ match g#inspect_get_type root with
+ | "windows" -> "\r\n"
+ | _ -> "\n"
+ in
+
+ if not (g#exists path) then (
+ g#write path (line ^ default_newline ())
+ )
+ else (
+ (* Stat the file. We want to know it's a regular file, and
+ * also its size.
+ *)
+ let { G.st_mode = mode; st_size = size } = g#statns path in
+ if Int64.logand mode 0o170000_L <> 0o100000_L then
+ error (f_"append_line: %s is not a file") path;
+
+ (* Guess the line ending from the first part of the file, else
+ * use the default for this guest type.
+ *)
+ let newline =
+ let content = g#pread path 8192 0L in
+ if String.find content "\r\n" >= 0 then "\r\n"
+ else if String.find content "\n" >= 0 then "\n"
+ else default_newline () in
+
+ let line = line ^ newline in
+
+ (* Do we need to append a newline to the existing file? *)
+ let last_chars =
+ let len = String.length newline in
+ if size <= 0L then newline (* empty file ends in virtual newline *)
+ else if size >= Int64.of_int len then
+ g#pread path len (size -^ Int64.of_int len)
+ else
+ g#pread path len 0L in
+ let line =
+ if last_chars = newline then line
+ else newline ^ line in
+
+ (* Finally, append. *)
+ g#write_append path line
+ )
diff --git a/customize/append_line.mli b/customize/append_line.mli
new file mode 100644
index 0000000..11c2da5
--- /dev/null
+++ b/customize/append_line.mli
@@ -0,0 +1,20 @@
+(* virt-customize
+ * Copyright (C) 2016 Red Hat Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *)
+
+val append_line : Guestfs.guestfs -> string -> string -> string -> unit
+(** append_line [g root file line] appends a single line to a text file. *)
diff --git a/customize/customize_run.ml b/customize/customize_run.ml
index 3e759a2..9ec7b5a 100644
--- a/customize/customize_run.ml
+++ b/customize/customize_run.ml
@@ -25,6 +25,7 @@ open Common_utils
open Customize_utils
open Customize_cmdline
open Password
+open Append_line
let run (g : Guestfs.guestfs) root (ops : ops) =
(* Is the host_cpu compatible with the guest arch? ie. Can we
@@ -204,6 +205,16 @@ exec >>%s 2>&1
(* Perform the remaining customizations in command-line order. *)
List.iter (
function
+ | `AppendLine (path, line) ->
+ (* It's an error if it's not a single line. This is
+ * to prevent incorrect line endings being added to a file.
+ *)
+ if String.contains line '\n' then
+ error (f_"--append-line: line must not contain newline characters. Use the --append-line option multiple times to add several lines.");
+
+ message (f_"Appending line to %s") path;
+ append_line g root path line
+
| `Chmod (mode, path) ->
message (f_"Changing permissions of %s to %s") path mode;
(* If the mode string is octal, add the OCaml prefix for octal values
diff --git a/generator/customize.ml b/generator/customize.ml
index 259cd26..d3a1946 100644
--- a/generator/customize.ml
+++ b/generator/customize.ml
@@ -49,6 +49,40 @@ and op_type =
| SMPoolSelector of string (* pool selector *)
let ops = [
+ { op_name = "append-line";
+ op_type = StringPair "FILE:LINE";
+ op_discrim = "`AppendLine";
+ op_shortdesc = "Append line(s) to the file";
+ op_pod_longdesc = "\
+Append a single line of text to the C<FILE>. If the file does not already
+end with a newline, then one is added before the appended
+line. Also a newline is added to the end of the C<LINE> string
+automatically.
+
+For example (assuming ordinary shell quoting) this command:
+
+ --append-line '/etc/hosts:10.0.0.1 foo'
+
+will add either C<10.0.0.1 foo⏎> or C<⏎10.0.0.1 foo⏎> to
+the file, the latter only if the existing file does not
+already end with a newline.
+
+C<⏎> represents a newline character, which is guessed by
+looking at the existing content of the file, so this command
+does the right thing for files using Unix or Windows line endings.
+It also works for empty or non-existent files.
+
+To insert several lines, use the same option several times:
+
+ --append-line '/etc/hosts:10.0.0.1 foo' \
+ --append-line '/etc/hosts:10.0.0.2 bar'
+
+To insert a blank line before the appended line, do:
+
+ --append-line '/etc/hosts:'
+ --append-line '/etc/hosts:10.0.0.1 foo'";
+ };
+
{ op_name = "chmod";
op_type = StringPair "PERMISSIONS:FILE";
op_discrim = "`Chmod";
--
2.9.3
7 years, 7 months
