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mirror of https://github.com/systemd/systemd-stable.git synced 2024-12-23 17:34:00 +03:00

systemd-analyze: support discrete images for 'verify' verb

Adding --image parameter for verify verb using the dissect image functionality

-----------------------------------------------------------------------------------
Example Run:

I created a unit service file testrun.service with an invalid key-value pairing
(foo = bar) and a squashfs image run.raw to test the code.

maanya-goenka@debian:~/systemd (img-support)$ cat <<EOF>img/usr/lib/systemd/system/testrun.service
> [Unit]
> foo = bar
>
> [Service]
> ExecStart = /opt/script0.sh
> EOF

maanya-goenka@debian:~/systemd (img-support)$ mksquashfs img/ run.raw
Parallel mksquashfs: Using 4 processors
Creating 4.0 filesystem on run.raw, block size 131072.
[==============================================================================================================================|] 6/6 100%

Exportable Squashfs 4.0 filesystem, gzip compressed, data block size 131072
        compressed data, compressed metadata, compressed fragments, compressed xattrs
        duplicates are removed
Filesystem size 0.60 Kbytes (0.00 Mbytes)
        52.32% of uncompressed filesystem size (1.14 Kbytes)
Inode table size 166 bytes (0.16 Kbytes)
        43.01% of uncompressed inode table size (386 bytes)
Directory table size 153 bytes (0.15 Kbytes)
        58.40% of uncompressed directory table size (262 bytes)
Number of duplicate files found 1
Number of inodes 12
Number of files 6
Number of fragments 1
Number of symbolic links  0
Number of device nodes 0
Number of fifo nodes 0
Number of socket nodes 0
Number of directories 6
Number of ids (unique uids + gids) 1
Number of uids 1
        maanya-goenka (1000)
Number of gids 1
        maanya-goenka (1000)
maanya-goenka@debian:~/systemd (img-support)$ sudo build/systemd-analyze verify --image=run.raw testrun.service
/tmp/.#systemd-analyzec71c7297a936b91c/usr/lib/systemd/system/testrun.service:2: Unknown key name 'foo' in section 'Unit', ignoring.
testrun.service: Failed to create testrun.service/start: Unit sysinit.target not found.

The 'Unit sysinit.target not found' error that we see here is due to recursive dependency searching during
unit loading and has been addressed in a different PR:
systemd-analyze: add option to return an error value when unit verification fails #20233
This commit is contained in:
Maanya Goenka 2021-06-30 10:02:51 -07:00
parent 2a7cf953e1
commit e5ea5c3a17
4 changed files with 49 additions and 3 deletions

View File

@ -751,6 +751,13 @@ Service b@0.service not loaded, b.socket cannot be started.
operate on files underneath the specified root path <replaceable>PATH</replaceable>.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--image=<replaceable>PATH</replaceable></option></term>
<listitem><para>With <command>cat-files</command> and <command>verify</command>,
operate on files inside the specified image path <replaceable>PATH</replaceable>.</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--iterations=<replaceable>NUMBER</replaceable></option></term>

View File

@ -125,7 +125,7 @@ _systemd_analyze() {
elif __contains_word "$verb" ${VERBS[VERIFY]}; then
if [[ $cur = -* ]]; then
comps='--help --version --system --user --global --man=no --generators=yes --root'
comps='--help --version --system --user --global --man=no --generators=yes --root --image'
else
comps=$( compgen -A file -- "$cur" )
compopt -o filenames

View File

@ -88,6 +88,7 @@ _arguments \
'--user[Operate on user systemd instance]' \
'--global[Show global user instance config]' \
'--root=[Add support for root argument]:PATH' \
'--image=[Add support for discrete images]:PATH' \
'--no-pager[Do not pipe output into a pager]' \
'--man=[Do (not) check for existence of man pages]:boolean:(1 0)' \
'--order[When generating graph for dot, show only order]' \

View File

@ -34,6 +34,7 @@
#include "locale-util.h"
#include "log.h"
#include "main-func.h"
#include "mount-util.h"
#include "nulstr-util.h"
#include "pager.h"
#include "parse-argument.h"
@ -87,12 +88,14 @@ static UnitFileScope arg_scope = UNIT_FILE_SYSTEM;
static bool arg_man = true;
static bool arg_generators = false;
static char *arg_root = NULL;
static char *arg_image = NULL;
static unsigned arg_iterations = 1;
static usec_t arg_base_time = USEC_INFINITY;
STATIC_DESTRUCTOR_REGISTER(arg_dot_from_patterns, strv_freep);
STATIC_DESTRUCTOR_REGISTER(arg_dot_to_patterns, strv_freep);
STATIC_DESTRUCTOR_REGISTER(arg_root, freep);
STATIC_DESTRUCTOR_REGISTER(arg_image, freep);
typedef struct BootTimes {
usec_t firmware_time;
@ -2232,6 +2235,7 @@ static int parse_argv(int argc, char *argv[]) {
ARG_ORDER,
ARG_REQUIRE,
ARG_ROOT,
ARG_IMAGE,
ARG_SYSTEM,
ARG_USER,
ARG_GLOBAL,
@ -2251,6 +2255,7 @@ static int parse_argv(int argc, char *argv[]) {
{ "order", no_argument, NULL, ARG_ORDER },
{ "require", no_argument, NULL, ARG_REQUIRE },
{ "root", required_argument, NULL, ARG_ROOT },
{ "image", required_argument, NULL, ARG_IMAGE },
{ "system", no_argument, NULL, ARG_SYSTEM },
{ "user", no_argument, NULL, ARG_USER },
{ "global", no_argument, NULL, ARG_GLOBAL },
@ -2287,6 +2292,12 @@ static int parse_argv(int argc, char *argv[]) {
return r;
break;
case ARG_IMAGE:
r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image);
if (r < 0)
return r;
break;
case ARG_SYSTEM:
arg_scope = UNIT_FILE_SYSTEM;
break;
@ -2381,14 +2392,21 @@ static int parse_argv(int argc, char *argv[]) {
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Option --user is not supported for cat-config right now.");
if (arg_root && !STRPTR_IN_SET(argv[optind], "cat-config", "verify"))
if ((arg_root || arg_image) && !STRPTR_IN_SET(argv[optind], "cat-config", "verify"))
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Option --root is only supported for cat-config and verify right now.");
"Options --root= and --image= are only supported for cat-config and verify right now.");
/* Having both an image and a root is not supported by the code */
if (arg_root && arg_image)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported.");
return 1; /* work to do */
}
static int run(int argc, char *argv[]) {
_cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL;
_cleanup_(decrypted_image_unrefp) DecryptedImage *decrypted_image = NULL;
_cleanup_(umount_and_rmdir_and_freep) char *unlink_dir = NULL;
static const Verb verbs[] = {
{ "help", VERB_ANY, VERB_ANY, 0, help },
@ -2432,6 +2450,26 @@ static int run(int argc, char *argv[]) {
if (r <= 0)
return r;
/* Open up and mount the image */
if (arg_image) {
assert(!arg_root);
r = mount_image_privately_interactively(
arg_image,
DISSECT_IMAGE_GENERIC_ROOT |
DISSECT_IMAGE_RELAX_VAR_CHECK |
DISSECT_IMAGE_READ_ONLY,
&unlink_dir,
&loop_device,
&decrypted_image);
if (r < 0)
return r;
arg_root = strdup(unlink_dir);
if (!arg_root)
return log_oom();
}
return dispatch_verb(argc, argv, verbs, NULL);
}