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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
parent
2a7cf953e1
commit
e5ea5c3a17
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@ -751,6 +751,13 @@ Service b@0.service not loaded, b.socket cannot be started.
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operate on files underneath the specified root path <replaceable>PATH</replaceable>.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--image=<replaceable>PATH</replaceable></option></term>
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<listitem><para>With <command>cat-files</command> and <command>verify</command>,
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operate on files inside the specified image path <replaceable>PATH</replaceable>.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--iterations=<replaceable>NUMBER</replaceable></option></term>
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@ -125,7 +125,7 @@ _systemd_analyze() {
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elif __contains_word "$verb" ${VERBS[VERIFY]}; then
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if [[ $cur = -* ]]; then
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comps='--help --version --system --user --global --man=no --generators=yes --root'
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comps='--help --version --system --user --global --man=no --generators=yes --root --image'
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else
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comps=$( compgen -A file -- "$cur" )
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compopt -o filenames
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@ -88,6 +88,7 @@ _arguments \
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'--user[Operate on user systemd instance]' \
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'--global[Show global user instance config]' \
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'--root=[Add support for root argument]:PATH' \
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'--image=[Add support for discrete images]:PATH' \
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'--no-pager[Do not pipe output into a pager]' \
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'--man=[Do (not) check for existence of man pages]:boolean:(1 0)' \
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'--order[When generating graph for dot, show only order]' \
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@ -34,6 +34,7 @@
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#include "locale-util.h"
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#include "log.h"
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#include "main-func.h"
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#include "mount-util.h"
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#include "nulstr-util.h"
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#include "pager.h"
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#include "parse-argument.h"
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@ -87,12 +88,14 @@ static UnitFileScope arg_scope = UNIT_FILE_SYSTEM;
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static bool arg_man = true;
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static bool arg_generators = false;
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static char *arg_root = NULL;
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static char *arg_image = NULL;
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static unsigned arg_iterations = 1;
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static usec_t arg_base_time = USEC_INFINITY;
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STATIC_DESTRUCTOR_REGISTER(arg_dot_from_patterns, strv_freep);
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STATIC_DESTRUCTOR_REGISTER(arg_dot_to_patterns, strv_freep);
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STATIC_DESTRUCTOR_REGISTER(arg_root, freep);
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STATIC_DESTRUCTOR_REGISTER(arg_image, freep);
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typedef struct BootTimes {
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usec_t firmware_time;
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@ -2232,6 +2235,7 @@ static int parse_argv(int argc, char *argv[]) {
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ARG_ORDER,
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ARG_REQUIRE,
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ARG_ROOT,
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ARG_IMAGE,
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ARG_SYSTEM,
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ARG_USER,
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ARG_GLOBAL,
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@ -2251,6 +2255,7 @@ static int parse_argv(int argc, char *argv[]) {
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{ "order", no_argument, NULL, ARG_ORDER },
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{ "require", no_argument, NULL, ARG_REQUIRE },
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{ "root", required_argument, NULL, ARG_ROOT },
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{ "image", required_argument, NULL, ARG_IMAGE },
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{ "system", no_argument, NULL, ARG_SYSTEM },
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{ "user", no_argument, NULL, ARG_USER },
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{ "global", no_argument, NULL, ARG_GLOBAL },
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@ -2287,6 +2292,12 @@ static int parse_argv(int argc, char *argv[]) {
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return r;
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break;
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case ARG_IMAGE:
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r = parse_path_argument(optarg, /* suppress_root= */ false, &arg_image);
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if (r < 0)
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return r;
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break;
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case ARG_SYSTEM:
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arg_scope = UNIT_FILE_SYSTEM;
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break;
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@ -2381,14 +2392,21 @@ static int parse_argv(int argc, char *argv[]) {
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return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
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"Option --user is not supported for cat-config right now.");
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if (arg_root && !STRPTR_IN_SET(argv[optind], "cat-config", "verify"))
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if ((arg_root || arg_image) && !STRPTR_IN_SET(argv[optind], "cat-config", "verify"))
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return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
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"Option --root is only supported for cat-config and verify right now.");
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"Options --root= and --image= are only supported for cat-config and verify right now.");
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/* Having both an image and a root is not supported by the code */
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if (arg_root && arg_image)
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return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Please specify either --root= or --image=, the combination of both is not supported.");
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return 1; /* work to do */
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}
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static int run(int argc, char *argv[]) {
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_cleanup_(loop_device_unrefp) LoopDevice *loop_device = NULL;
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_cleanup_(decrypted_image_unrefp) DecryptedImage *decrypted_image = NULL;
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_cleanup_(umount_and_rmdir_and_freep) char *unlink_dir = NULL;
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static const Verb verbs[] = {
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{ "help", VERB_ANY, VERB_ANY, 0, help },
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@ -2432,6 +2450,26 @@ static int run(int argc, char *argv[]) {
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if (r <= 0)
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return r;
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/* Open up and mount the image */
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if (arg_image) {
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assert(!arg_root);
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r = mount_image_privately_interactively(
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arg_image,
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DISSECT_IMAGE_GENERIC_ROOT |
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DISSECT_IMAGE_RELAX_VAR_CHECK |
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DISSECT_IMAGE_READ_ONLY,
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&unlink_dir,
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&loop_device,
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&decrypted_image);
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if (r < 0)
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return r;
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arg_root = strdup(unlink_dir);
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if (!arg_root)
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return log_oom();
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}
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return dispatch_verb(argc, argv, verbs, NULL);
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}
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