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-rw-r--r--src/shared/install.c102
-rw-r--r--src/shared/install.h2
2 files changed, 95 insertions, 9 deletions
diff --git a/src/shared/install.c b/src/shared/install.c
index 945bb2748d..ff5dcbac15 100644
--- a/src/shared/install.c
+++ b/src/shared/install.c
@@ -1042,7 +1042,8 @@ static int unit_file_load(
InstallInfo *info,
const char *path,
const char *root_dir,
- bool allow_symlink) {
+ bool allow_symlink,
+ bool load) {
const ConfigTableItem items[] = {
{ "Install", "Alias", config_parse_strv, 0, &info->aliases },
@@ -1064,6 +1065,11 @@ static int unit_file_load(
if (!isempty(root_dir))
path = strappenda(root_dir, "/", path);
+ if (!load) {
+ r = access(path, F_OK) ? -errno : 0;
+ return r;
+ }
+
fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY|(allow_symlink ? 0 : O_NOFOLLOW));
if (fd < 0)
return -errno;
@@ -1092,7 +1098,8 @@ static int unit_file_search(
InstallInfo *info,
LookupPaths *paths,
const char *root_dir,
- bool allow_symlink) {
+ bool allow_symlink,
+ bool load) {
char **p;
int r;
@@ -1102,7 +1109,7 @@ static int unit_file_search(
assert(paths);
if (info->path)
- return unit_file_load(c, info, info->path, root_dir, allow_symlink);
+ return unit_file_load(c, info, info->path, root_dir, allow_symlink, load);
assert(info->name);
@@ -1113,7 +1120,7 @@ static int unit_file_search(
if (!path)
return -ENOMEM;
- r = unit_file_load(c, info, path, root_dir, allow_symlink);
+ r = unit_file_load(c, info, path, root_dir, allow_symlink, load);
if (r >= 0) {
info->path = path;
path = NULL;
@@ -1142,7 +1149,7 @@ static int unit_file_search(
if (!path)
return -ENOMEM;
- r = unit_file_load(c, info, path, root_dir, allow_symlink);
+ r = unit_file_load(c, info, path, root_dir, allow_symlink, load);
if (r >= 0) {
info->path = path;
path = NULL;
@@ -1175,7 +1182,7 @@ static int unit_file_can_install(
assert_se(i = hashmap_first(c.will_install));
- r = unit_file_search(&c, i, paths, root_dir, allow_symlink);
+ r = unit_file_search(&c, i, paths, root_dir, allow_symlink, true);
if (r >= 0)
r =
@@ -1402,7 +1409,7 @@ static int install_context_apply(
assert_se(hashmap_move_one(c->have_installed, c->will_install, i->name) == 0);
- q = unit_file_search(c, i, paths, root_dir, false);
+ q = unit_file_search(c, i, paths, root_dir, false, true);
if (q < 0) {
if (r >= 0)
r = q;
@@ -1443,7 +1450,7 @@ static int install_context_mark_for_removal(
assert_se(hashmap_move_one(c->have_installed, c->will_install, i->name) == 0);
- q = unit_file_search(c, i, paths, root_dir, false);
+ q = unit_file_search(c, i, paths, root_dir, false, true);
if (q == -ENOENT) {
/* do nothing */
} else if (q < 0) {
@@ -1489,6 +1496,83 @@ static int install_context_mark_for_removal(
return r;
}
+int unit_file_add_dependency(
+ UnitFileScope scope,
+ bool runtime,
+ const char *root_dir,
+ char **files,
+ char *target,
+ UnitDependency dep,
+ bool force,
+ UnitFileChange **changes,
+ unsigned *n_changes) {
+
+ _cleanup_lookup_paths_free_ LookupPaths paths = {};
+ _cleanup_(install_context_done) InstallContext c = {};
+ _cleanup_free_ char *config_path = NULL;
+ char **i;
+ int r;
+ InstallInfo *info;
+
+ assert(scope >= 0);
+ assert(scope < _UNIT_FILE_SCOPE_MAX);
+
+ r = lookup_paths_init_from_scope(&paths, scope, root_dir);
+ if (r < 0)
+ return r;
+
+ r = get_config_path(scope, runtime, root_dir, &config_path);
+ if (r < 0)
+ return r;
+
+ STRV_FOREACH(i, files) {
+ UnitFileState state;
+
+ state = unit_file_get_state(scope, root_dir, *i);
+ if (state < 0) {
+ log_error("Failed to get unit file state for %s: %s", *i, strerror(-state));
+ return state;
+ }
+
+ if (state == UNIT_FILE_MASKED || state == UNIT_FILE_MASKED_RUNTIME) {
+ log_error("Failed to enable unit: Unit %s is masked", *i);
+ return -ENOTSUP;
+ }
+
+ r = install_info_add_auto(&c, *i);
+ if (r < 0)
+ return r;
+ }
+
+ while ((info = hashmap_first(c.will_install))) {
+ r = hashmap_ensure_allocated(&c.have_installed, &string_hash_ops);
+ if (r < 0)
+ return r;
+
+ assert_se(hashmap_move_one(c.have_installed, c.will_install, info->name) == 0);
+
+ r = unit_file_search(&c, info, &paths, root_dir, false, false);
+ if (r < 0)
+ return r;
+
+ if (dep == UNIT_WANTS)
+ r = strv_extend(&info->wanted_by, target);
+ else if (dep == UNIT_REQUIRES)
+ r = strv_extend(&info->required_by, target);
+ else
+ r = -EINVAL;
+
+ if (r < 0)
+ return r;
+
+ r = install_info_apply(info, &paths, config_path, root_dir, force, changes, n_changes);
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
int unit_file_enable(
UnitFileScope scope,
bool runtime,
@@ -1638,7 +1722,7 @@ int unit_file_set_default(
assert_se(i = hashmap_first(c.will_install));
- r = unit_file_search(&c, i, &paths, root_dir, false);
+ r = unit_file_search(&c, i, &paths, root_dir, false, true);
if (r < 0)
return r;
diff --git a/src/shared/install.h b/src/shared/install.h
index ff16d9f681..c0b4df69d5 100644
--- a/src/shared/install.h
+++ b/src/shared/install.h
@@ -22,6 +22,7 @@
***/
#include "hashmap.h"
+#include "unit-name.h"
typedef enum UnitFileScope {
UNIT_FILE_SYSTEM,
@@ -93,6 +94,7 @@ int unit_file_mask(UnitFileScope scope, bool runtime, const char *root_dir, char
int unit_file_unmask(UnitFileScope scope, bool runtime, const char *root_dir, char **files, UnitFileChange **changes, unsigned *n_changes);
int unit_file_set_default(UnitFileScope scope, const char *root_dir, const char *file, bool force, UnitFileChange **changes, unsigned *n_changes);
int unit_file_get_default(UnitFileScope scope, const char *root_dir, char **name);
+int unit_file_add_dependency(UnitFileScope scope, bool runtime, const char *root_dir, char **files, char *target, UnitDependency dep, bool force, UnitFileChange **changes, unsigned *n_changes);
UnitFileState unit_file_get_state(UnitFileScope scope, const char *root_dir, const char *filename);