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Merge pull request #19156 from dtardon/enable-warn

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install: warn if WantedBy targets don't exist
This commit is contained in:
Luca Boccassi 2021-04-23 16:43:45 +01:00 committed by GitHub
commit 778139c6e4
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 51 additions and 7 deletions
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17
src/shared/install.c
View File

@ -350,6 +350,11 @@ void unit_file_dump_changes(int r, const char *verb, const UnitFileChange *chang
log_info("Unit %s is an alias to a unit that is not present, ignoring.",
changes[i].path);
break;
case UNIT_FILE_DESTINATION_NOT_PRESENT:
if (!quiet)
log_warning("Unit %s is added as a dependency to a non-existent unit %s.",
changes[i].source, changes[i].path);
break;
case -EEXIST:
if (changes[i].source)
log_error_errno(changes[i].type_or_errno,
@ -1832,6 +1837,7 @@ static int install_info_symlink_alias(
}
static int install_info_symlink_wants(
UnitFileScope scope,
UnitFileInstallInfo *i,
const LookupPaths *paths,
const char *config_path,
@ -1902,6 +1908,9 @@ static int install_info_symlink_wants(
q = create_symlink(paths, i->path, path, true, changes, n_changes);
if (r == 0)
r = q;
if (unit_file_exists(scope, paths, dst) == 0)
unit_file_changes_add(changes, n_changes, UNIT_FILE_DESTINATION_NOT_PRESENT, dst, i->path);
}
return r;
@ -1937,6 +1946,7 @@ static int install_info_symlink_link(
}
static int install_info_apply(
UnitFileScope scope,
UnitFileInstallInfo *i,
const LookupPaths *paths,
const char *config_path,
@ -1955,11 +1965,11 @@ static int install_info_apply(
r = install_info_symlink_alias(i, paths, config_path, force, changes, n_changes);
q = install_info_symlink_wants(i, paths, config_path, i->wanted_by, ".wants/", changes, n_changes);
q = install_info_symlink_wants(scope, i, paths, config_path, i->wanted_by, ".wants/", changes, n_changes);
if (r == 0)
r = q;
q = install_info_symlink_wants(i, paths, config_path, i->required_by, ".requires/", changes, n_changes);
q = install_info_symlink_wants(scope, i, paths, config_path, i->required_by, ".requires/", changes, n_changes);
if (r == 0)
r = q;
@ -2023,7 +2033,7 @@ static int install_context_apply(
if (i->type != UNIT_FILE_TYPE_REGULAR)
continue;
q = install_info_apply(i, paths, config_path, force, changes, n_changes);
q = install_info_apply(scope, i, paths, config_path, force, changes, n_changes);
if (r >= 0) {
if (q < 0)
r = q;
@ -3461,6 +3471,7 @@ static const char* const unit_file_change_type_table[_UNIT_FILE_CHANGE_TYPE_MAX]
[UNIT_FILE_UNLINK] = "unlink",
[UNIT_FILE_IS_MASKED] = "masked",
[UNIT_FILE_IS_DANGLING] = "dangling",
[UNIT_FILE_DESTINATION_NOT_PRESENT] = "destination not present",
};
DEFINE_STRING_TABLE_LOOKUP(unit_file_change_type, int);

1
src/shared/install.h
View File

@ -32,6 +32,7 @@ enum {
UNIT_FILE_UNLINK,
UNIT_FILE_IS_MASKED,
UNIT_FILE_IS_DANGLING,
UNIT_FILE_DESTINATION_NOT_PRESENT,
_UNIT_FILE_CHANGE_TYPE_MAX,
_UNIT_FILE_CHANGE_TYPE_INVALID = -EINVAL,
};

32
src/test/test-install-root.c
View File

@ -25,6 +25,7 @@ static void test_basic_mask_and_enable(const char *root) {
assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "c.service", NULL) == -ENOENT);
assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "d.service", NULL) == -ENOENT);
assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "e.service", NULL) == -ENOENT);
assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "f.service", NULL) == -ENOENT);
p = strjoina(root, "/usr/lib/systemd/system/a.service");
assert_se(write_string_file(p,
@ -168,6 +169,31 @@ static void test_basic_mask_and_enable(const char *root) {
assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "e.service", &state) >= 0 && state == UNIT_FILE_MASKED);
assert_se(unlink(p) == 0);
/* Test enabling with unknown dependency target */
p = strjoina(root, "/usr/lib/systemd/system/f.service");
assert_se(write_string_file(p,
"[Install]\n"
"WantedBy=x.target\n", WRITE_STRING_FILE_CREATE) >= 0);
assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "f.service", NULL) >= 0);
assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "f.service", &state) >= 0 && state == UNIT_FILE_DISABLED);
assert_se(unit_file_enable(UNIT_FILE_SYSTEM, 0, root, STRV_MAKE("f.service"), &changes, &n_changes) == 1);
assert_se(n_changes == 2);
assert_se(changes[0].type_or_errno == UNIT_FILE_SYMLINK);
assert_se(streq(changes[0].source, "/usr/lib/systemd/system/f.service"));
p = strjoina(root, SYSTEM_CONFIG_UNIT_DIR"/x.target.wants/f.service");
assert_se(streq(changes[0].path, p));
assert_se(changes[1].type_or_errno == UNIT_FILE_DESTINATION_NOT_PRESENT);
p = strjoina(root, "/usr/lib/systemd/system/f.service");
assert_se(streq(changes[1].source, p));
assert_se(streq(changes[1].path, "x.target"));
unit_file_changes_free(changes, n_changes);
changes = NULL; n_changes = 0;
assert_se(unit_file_get_state(UNIT_FILE_SYSTEM, root, "f.service", &state) >= 0 && state == UNIT_FILE_ENABLED);
}
static void test_linked_units(const char *root) {
@ -1244,6 +1270,12 @@ int main(int argc, char *argv[]) {
p = strjoina(root, "/usr/lib/systemd/system-preset/");
assert_se(mkdir_p(p, 0755) >= 0);
p = strjoina(root, "/usr/lib/systemd/system/multi-user.target");
assert_se(write_string_file(p, "# pretty much empty", WRITE_STRING_FILE_CREATE) >= 0);
p = strjoina(root, "/usr/lib/systemd/system/graphical.target");
assert_se(write_string_file(p, "# pretty much empty", WRITE_STRING_FILE_CREATE) >= 0);
test_basic_mask_and_enable(root);
test_linked_units(root);
test_default(root);