diff options
author | Mike Yuan <me@yhndnzj.com> | 2023-05-16 21:53:24 +0800 |
---|---|---|
committer | GitHub <noreply@github.com> | 2023-05-16 21:53:24 +0800 |
commit | 0313c41068a362178190eac81f64b60223bb4c0c (patch) | |
tree | 859c0475b13cc7dac6edb15fcfce44286deee0ce /src | |
parent | 3907b2563855f42562643fd26e9dec515d4ef928 (diff) | |
parent | b5b1351317db64de1f2c944ec153208ba8174079 (diff) | |
download | systemd-0313c41068a362178190eac81f64b60223bb4c0c.tar.gz |
Merge pull request #27638 from YHNdnzj/upheldby-unit-file
unit-file: support UpheldBy= in [Install] settings (adding Upholds= deps from .upholds/)
Diffstat (limited to 'src')
-rw-r--r-- | src/basic/unit-file.c | 5 | ||||
-rw-r--r-- | src/core/load-dropin.c | 6 | ||||
-rw-r--r-- | src/core/load-fragment-gperf.gperf.in | 1 | ||||
-rw-r--r-- | src/shared/install.c | 21 | ||||
-rw-r--r-- | src/shared/install.h | 1 | ||||
-rw-r--r-- | src/systemctl/systemctl-enable.c | 6 | ||||
-rw-r--r-- | src/test/test-install-root.c | 12 |
7 files changed, 39 insertions, 13 deletions
diff --git a/src/basic/unit-file.c b/src/basic/unit-file.c index 41422579d6..54f2137a36 100644 --- a/src/basic/unit-file.c +++ b/src/basic/unit-file.c @@ -250,9 +250,10 @@ bool lookup_paths_timestamp_hash_same(const LookupPaths *lp, uint64_t timestamp_ static int directory_name_is_valid(const char *name) { - /* Accept a directory whose name is a valid unit file name ending in .wants/, .requires/ or .d/ */ + /* Accept a directory whose name is a valid unit file name ending in .wants/, .requires/, + * .upholds/ or .d/ */ - FOREACH_STRING(suffix, ".wants", ".requires", ".d") { + FOREACH_STRING(suffix, ".wants", ".requires", ".upholds", ".d") { _cleanup_free_ char *chopped = NULL; const char *e; diff --git a/src/core/load-dropin.c b/src/core/load-dropin.c index 53d2a3daa1..fd45744261 100644 --- a/src/core/load-dropin.c +++ b/src/core/load-dropin.c @@ -88,7 +88,7 @@ int unit_load_dropin(Unit *u) { assert(u); - /* Load dependencies from .wants and .requires directories */ + /* Load dependencies from .wants, .requires and .upholds directories */ r = process_deps(u, UNIT_WANTS, ".wants"); if (r < 0) return r; @@ -97,6 +97,10 @@ int unit_load_dropin(Unit *u) { if (r < 0) return r; + r = process_deps(u, UNIT_UPHOLDS, ".upholds"); + if (r < 0) + return r; + /* Load .conf dropins */ r = unit_find_dropin_paths(u, &l); if (r <= 0) diff --git a/src/core/load-fragment-gperf.gperf.in b/src/core/load-fragment-gperf.gperf.in index 110bccb7ad..2a3c2c2cb8 100644 --- a/src/core/load-fragment-gperf.gperf.in +++ b/src/core/load-fragment-gperf.gperf.in @@ -580,5 +580,6 @@ Scope.OOMPolicy, config_parse_oom_policy, Install.Alias, NULL, 0, 0 Install.WantedBy, NULL, 0, 0 Install.RequiredBy, NULL, 0, 0 +Install.UpheldBy, NULL, 0, 0 Install.Also, NULL, 0, 0 Install.DefaultInstance, NULL, 0, 0 diff --git a/src/shared/install.c b/src/shared/install.c index 152e517ebc..7903de17b1 100644 --- a/src/shared/install.c +++ b/src/shared/install.c @@ -73,7 +73,8 @@ static bool install_info_has_rules(const InstallInfo *i) { return !strv_isempty(i->aliases) || !strv_isempty(i->wanted_by) || - !strv_isempty(i->required_by); + !strv_isempty(i->required_by) || + !strv_isempty(i->upheld_by); } static bool install_info_has_also(const InstallInfo *i) { @@ -942,7 +943,7 @@ static int find_symlinks( continue; suffix = strrchr(de->d_name, '.'); - if (!STRPTR_IN_SET(suffix, ".wants", ".requires")) + if (!STRPTR_IN_SET(suffix, ".wants", ".requires", ".upholds")) continue; path = path_join(config_path, de->d_name); @@ -967,7 +968,8 @@ static int find_symlinks( log_debug_errno(r, "Failed to look up symlinks in \"%s\": %m", path); } - /* We didn't find any suitable symlinks in .wants or .requires directories, let's look for linked unit files in this directory. */ + /* We didn't find any suitable symlinks in .wants, .requires or .upholds directories, + * let's look for linked unit files in this directory. */ rewinddir(config_dir); return find_symlinks_in_directory(config_dir, config_path, root_dir, i, /* ignore_destination= */ false, @@ -1081,6 +1083,7 @@ static void install_info_clear(InstallInfo *i) { i->aliases = strv_free(i->aliases); i->wanted_by = strv_free(i->wanted_by); i->required_by = strv_free(i->required_by); + i->upheld_by = strv_free(i->upheld_by); i->also = strv_free(i->also); i->default_instance = mfree(i->default_instance); i->symlink_target = mfree(i->symlink_target); @@ -1337,6 +1340,7 @@ static int unit_file_load( { "Install", "Alias", config_parse_alias, 0, &info->aliases }, { "Install", "WantedBy", config_parse_strv, 0, &info->wanted_by }, { "Install", "RequiredBy", config_parse_strv, 0, &info->required_by }, + { "Install", "UpheldBy", config_parse_strv, 0, &info->upheld_by }, { "Install", "DefaultInstance", config_parse_default_instance, 0, info }, { "Install", "Also", config_parse_also, 0, ctx }, {} @@ -1440,7 +1444,8 @@ static int unit_file_load( return (int) strv_length(info->aliases) + (int) strv_length(info->wanted_by) + - (int) strv_length(info->required_by); + (int) strv_length(info->required_by) + + (int) strv_length(info->upheld_by); } static int unit_file_load_or_readlink( @@ -2113,6 +2118,10 @@ static int install_info_apply( if (r == 0) r = q; + q = install_info_symlink_wants(scope, file_flags, info, lp, config_path, info->upheld_by, ".upholds/", changes, n_changes); + if (r == 0) + r = q; + return r; } @@ -2733,8 +2742,10 @@ int unit_file_add_dependency( if (dep == UNIT_WANTS) l = &info->wanted_by; - else + else if (dep == UNIT_REQUIRES) l = &info->required_by; + else + l = &info->upheld_by; strv_free(*l); *l = strv_new(target_info->name); diff --git a/src/shared/install.h b/src/shared/install.h index 30b07a725f..bc0c6db828 100644 --- a/src/shared/install.h +++ b/src/shared/install.h @@ -92,6 +92,7 @@ struct InstallInfo { char **aliases; char **wanted_by; char **required_by; + char **upheld_by; char **also; char *default_instance; diff --git a/src/systemctl/systemctl-enable.c b/src/systemctl/systemctl-enable.c index 6d3709705e..940f54607f 100644 --- a/src/systemctl/systemctl-enable.c +++ b/src/systemctl/systemctl-enable.c @@ -248,9 +248,9 @@ int verb_enable(int argc, char *argv[], void *userdata) { } if (carries_install_info == 0 && !ignore_carries_install_info) - log_notice("The unit files have no installation config (WantedBy=, RequiredBy=, Also=,\n" - "Alias= settings in the [Install] section, and DefaultInstance= for template\n" - "units). This means they are not meant to be enabled or disabled using systemctl.\n" + log_notice("The unit files have no installation config (WantedBy=, RequiredBy=, UpheldBy=,\n" + "Also=, or Alias= settings in the [Install] section, and DefaultInstance= for\n" + "template units). This means they are not meant to be enabled or disabled using systemctl.\n" " \n" /* trick: the space is needed so that the line does not get stripped from output */ "Possible reasons for having this kind of units are:\n" "%1$s A unit may be statically enabled by being symlinked from another unit's\n" diff --git a/src/test/test-install-root.c b/src/test/test-install-root.c index 55b8894ecc..80166b17c6 100644 --- a/src/test/test-install-root.c +++ b/src/test/test-install-root.c @@ -1135,6 +1135,9 @@ TEST(verify_alias) { verify_one(&plain_service, "alias.socket", -EXDEV, NULL); verify_one(&plain_service, "alias@.service", -EXDEV, NULL); verify_one(&plain_service, "alias@inst.service", -EXDEV, NULL); + + /* Setting WantedBy= and RequiredBy= through Alias= is supported for the sake of backwards + * compatibility. */ verify_one(&plain_service, "foo.target.wants/plain.service", 0, NULL); verify_one(&plain_service, "foo.target.wants/plain.socket", -EXDEV, NULL); verify_one(&plain_service, "foo.target.wants/plain@.service", -EXDEV, NULL); @@ -1143,9 +1146,14 @@ TEST(verify_alias) { verify_one(&plain_service, "foo.target.requires/plain.socket", -EXDEV, NULL); verify_one(&plain_service, "foo.target.requires/plain@.service", -EXDEV, NULL); verify_one(&plain_service, "foo.target.requires/service", -EXDEV, NULL); - verify_one(&plain_service, "foo.target.conf/plain.service", -EXDEV, NULL); - verify_one(&plain_service, "foo.service/plain.service", -EXDEV, NULL); /* missing dir suffix */ verify_one(&plain_service, "asdf.requires/plain.service", -EXDEV, NULL); /* invalid unit name component */ + /* The newly-added UpheldBy= (.upholds/) and other suffixes should be rejected */ + verify_one(&plain_service, "foo.target.upholds/plain.service", -EXDEV, NULL); + verify_one(&plain_service, "foo.target.upholds/plain.socket", -EXDEV, NULL); + verify_one(&plain_service, "foo.target.upholds/plain@.service", -EXDEV, NULL); + verify_one(&plain_service, "foo.target.upholds/service", -EXDEV, NULL); + verify_one(&plain_service, "foo.service/plain.service", -EXDEV, NULL); /* missing dir suffix */ + verify_one(&plain_service, "foo.target.conf/plain.service", -EXDEV, NULL); verify_one(&bare_template, "alias.service", -EXDEV, NULL); verify_one(&bare_template, "alias.socket", -EXDEV, NULL); |