#include "bus-error.h"
#include "bus-common-errors.h"
#include "mkdir.h"
+#include "dropin.h"
static char **arg_types = NULL;
static char **arg_states = NULL;
return b;
}
+static void warn_unit_file_changed(const char *name) {
+ log_warning("%sWarning:%s %s changed on disk. Run 'systemctl%s daemon-reload' to reload units.",
+ ansi_highlight_red(),
+ ansi_highlight_off(),
+ name,
+ arg_scope == UNIT_FILE_SYSTEM ? "" : " --user");
+}
+
+static int unit_file_find_path(LookupPaths *lp, const char *unit_name, char **unit_path) {
+ char **p;
+
+ assert(lp);
+ assert(unit_name);
+ assert(unit_path);
+
+ STRV_FOREACH(p, lp->unit_path) {
+ _cleanup_free_ char *path;
+
+ path = path_join(arg_root, *p, unit_name);
+ if (!path)
+ return log_oom();
+
+ if (access(path, F_OK) == 0) {
+ *unit_path = path;
+ path = NULL;
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+static int unit_find_paths(sd_bus *bus,
+ const char *unit_name,
+ bool avoid_bus_cache,
+ LookupPaths *lp,
+ char **fragment_path,
+ char ***dropin_paths) {
+ int r;
+
+ /**
+ * Finds where the unit is defined on disk. Returns 0 if the unit
+ * is not found. Returns 1 if it is found, and sets
+ * - the path to the unit in *path, if it exists on disk,
+ * - and a strv of existing drop-ins in *dropins,
+ * if the arg is not NULL and any dropins were found.
+ */
+
+ assert(unit_name);
+ assert(fragment_path);
+ assert(lp);
+
+ if (!avoid_bus_cache && !unit_name_is_template(unit_name)) {
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_free_ char *unit = NULL;
+ _cleanup_free_ char *path = NULL;
+ _cleanup_strv_free_ char **dropins = NULL;
+
+ unit = unit_dbus_path_from_name(unit_name);
+ if (!unit)
+ return log_oom();
+
+ if (need_daemon_reload(bus, unit_name) > 0)
+ warn_unit_file_changed(unit_name);
+
+ r = sd_bus_get_property_string(
+ bus,
+ "org.freedesktop.systemd1",
+ unit,
+ "org.freedesktop.systemd1.Unit",
+ "FragmentPath",
+ &error,
+ &path);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get FragmentPath: %s", bus_error_message(&error, r));
+
+ r = sd_bus_get_property_strv(
+ bus,
+ "org.freedesktop.systemd1",
+ unit,
+ "org.freedesktop.systemd1.Unit",
+ "DropInPaths",
+ &error,
+ &dropins);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get DropInPaths: %s", bus_error_message(&error, r));
+
+ r = 0;
+ if (!isempty(path)) {
+ *fragment_path = path;
+ path = NULL;
+ r = 1;
+ }
+
+ if (dropin_paths && !strv_isempty(dropins)) {
+ *dropin_paths = dropins;
+ dropins = NULL;
+ r = 1;
+ }
+ } else {
+ _cleanup_set_free_ Set *names;
+
+ names = set_new(NULL);
+ if (!names)
+ return -ENOMEM;
+
+ r = set_put(names, unit_name);
+ if (r < 0)
+ return r;
+
+ r = unit_file_find_path(lp, unit_name, fragment_path);
+ if (r < 0)
+ return r;
+
+ if (r == 0) {
+ _cleanup_free_ char *template;
+
+ template = unit_name_template(unit_name);
+ if (!template)
+ return log_oom();
+
+ if (!streq(template, unit_name)) {
+ r = unit_file_find_path(lp, template, fragment_path);
+ if (r < 0)
+ return r;
+ }
+ }
+
+ if (dropin_paths)
+ r = unit_file_find_dropin_paths(lp->unit_path, NULL, names, dropin_paths);
+ }
+
+ return r;
+}
+
typedef struct WaitData {
Set *set;
return bus_log_parse_error(r);
if (need_daemon_reload(bus, name) > 0)
- log_warning("Warning: Unit file of %s changed on disk, 'systemctl%s daemon-reload' recommended.",
- name, arg_scope == UNIT_FILE_SYSTEM ? "" : " --user");
+ warn_unit_file_changed(name);
if (s) {
char *p;
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
_cleanup_free_ UnitInfo *unit_infos = NULL;
+ if (!bus)
+ return log_error_errno(ENOTSUP, "Unit name globbing without bus is not implemented.");
+
r = get_unit_list(bus, NULL, globs, &unit_infos, 0, &reply);
if (r < 0)
return r;
}
if (i->need_daemon_reload)
- printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %sdaemon-reload' recommended.\n",
- ansi_highlight_red(),
- ansi_highlight_off(),
- arg_scope == UNIT_FILE_SYSTEM ? "" : "--user ");
+ warn_unit_file_changed(i->id);
}
static void show_unit_help(UnitStatusInfo *i) {
return ret;
}
+static int init_home_and_lookup_paths(char **user_home, char **user_runtime, LookupPaths *lp) {
+ int r;
+
+ assert(user_home);
+ assert(user_runtime);
+ assert(lp);
+
+ if (arg_scope == UNIT_FILE_USER) {
+ r = user_config_home(user_home);
+ if (r < 0)
+ return log_error_errno(r, "Failed to query XDG_CONFIG_HOME: %m");
+ else if (r == 0)
+ return log_error_errno(ENOTDIR, "Cannot find units: $XDG_CONFIG_HOME and $HOME are not set.");
+
+ r = user_runtime_dir(user_runtime);
+ if (r < 0)
+ return log_error_errno(r, "Failed to query XDG_CONFIG_HOME: %m");
+ else if (r == 0)
+ return log_error_errno(ENOTDIR, "Cannot find units: $XDG_RUNTIME_DIR is not set.");
+ }
+
+ r = lookup_paths_init(lp,
+ arg_scope == UNIT_FILE_SYSTEM ? SYSTEMD_SYSTEM : SYSTEMD_USER,
+ arg_scope == UNIT_FILE_USER,
+ arg_root,
+ NULL, NULL, NULL);
+ if (r < 0)
+ return log_error_errno(r, "Failed to lookup unit lookup paths: %m");
+
+ return 0;
+}
+
static int cat(sd_bus *bus, char **args) {
+ _cleanup_free_ char *user_home = NULL;
+ _cleanup_free_ char *user_runtime = NULL;
+ _cleanup_lookup_paths_free_ LookupPaths lp = {};
_cleanup_strv_free_ char **names = NULL;
char **name;
- bool first = true;
+ bool first = true, avoid_bus_cache;
int r = 0;
- assert(bus);
assert(args);
+ r = init_home_and_lookup_paths(&user_home, &user_runtime, &lp);
+ if (r < 0)
+ return r;
+
r = expand_names(bus, args + 1, NULL, &names);
if (r < 0)
log_error_errno(r, "Failed to expand names: %m");
+ avoid_bus_cache = !bus || avoid_bus();
+
pager_open_if_enabled();
STRV_FOREACH(name, names) {
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_free_ char *fragment_path = NULL;
_cleanup_strv_free_ char **dropin_paths = NULL;
- _cleanup_free_ char *fragment_path = NULL, *unit = NULL;
char **path;
- unit = unit_dbus_path_from_name(*name);
- if (!unit)
- return log_oom();
-
- if (need_daemon_reload(bus, *name) > 0)
- log_warning("Unit file of %s changed on disk. Run 'systemctl%s daemon-reload'.",
- *name, arg_scope == UNIT_FILE_SYSTEM ? "" : " --user");
-
- r = sd_bus_get_property_string(
- bus,
- "org.freedesktop.systemd1",
- unit,
- "org.freedesktop.systemd1.Unit",
- "FragmentPath",
- &error,
- &fragment_path);
- if (r < 0) {
- log_warning("Failed to get FragmentPath: %s", bus_error_message(&error, r));
- continue;
- }
-
- r = sd_bus_get_property_strv(
- bus,
- "org.freedesktop.systemd1",
- unit,
- "org.freedesktop.systemd1.Unit",
- "DropInPaths",
- &error,
- &dropin_paths);
- if (r < 0) {
- log_warning("Failed to get DropInPaths: %s", bus_error_message(&error, r));
+ r = unit_find_paths(bus, *name, avoid_bus_cache, &lp, &fragment_path, &dropin_paths);
+ if (r < 0)
+ return r;
+ else if (r == 0) {
+ log_warning("Unit %s does not have any files on disk", *name);
continue;
}
else
puts("");
- if (!isempty(fragment_path)) {
+ if (fragment_path) {
printf("%s# %s%s\n",
ansi_highlight_blue(),
fragment_path,
return streq(state, "running") ? EXIT_SUCCESS : EXIT_FAILURE;
}
-static int unit_file_find_path(LookupPaths *lp, const char *unit_name, char **unit_path) {
- char **p;
-
- assert(lp);
- assert(unit_name);
- assert(unit_path);
-
- STRV_FOREACH(p, lp->unit_path) {
- char *path;
-
- path = path_join(arg_root, *p, unit_name);
- if (!path)
- return log_oom();
-
- if (access(path, F_OK) == 0) {
- *unit_path = path;
- return 1;
- }
-
- free(path);
- }
-
- return 0;
-}
-
static int create_edit_temp_file(const char *new_path, const char *original_path, char **ret_tmp_fn) {
char *t;
int r;
}
}
- log_error("Cannot edit unit(s): No editor available. Please set either SYSTEMD_EDITOR or EDITOR or VISUAL environment variable");
+ log_error("Cannot edit unit(s), no editor available. Please set either $SYSTEMD_EDITOR or $EDITOR or $VISUAL.");
_exit(EXIT_FAILURE);
}
return r;
}
-static int unit_find_path(sd_bus *bus, const char *unit_name, const char *template, bool avoid_bus_cache, LookupPaths *lp, char **path) {
- int r;
-
- assert(unit_name);
- assert(path);
- assert(lp);
-
- if (!avoid_bus_cache && !unit_name_is_template(unit_name)) {
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
- _cleanup_free_ char *unit = NULL;
- _cleanup_free_ char *tmp_path = NULL;
-
- unit = unit_dbus_path_from_name(unit_name);
- if (!unit)
- return log_oom();
-
- if (need_daemon_reload(bus, unit_name) > 0) {
- log_warning("%s ignored: unit file changed on disk. Run 'systemctl%s daemon-reload'.",
- unit_name, arg_scope == UNIT_FILE_SYSTEM ? "" : " --user");
- return 0;
- }
-
- r = sd_bus_get_property_string(
- bus,
- "org.freedesktop.systemd1",
- unit,
- "org.freedesktop.systemd1.Unit",
- "FragmentPath",
- &error,
- &tmp_path);
- if (r < 0) {
- log_warning("Failed to get FragmentPath: %s", bus_error_message(&error, r));
- return 0;
- }
-
- if (isempty(tmp_path)) {
- log_warning("%s ignored: not found", template);
- return 0;
- }
-
- *path = tmp_path;
- tmp_path = NULL;
-
- return 1;
- } else {
- r = unit_file_find_path(lp, template, path);
- if (r == 0)
- log_warning("%s ignored: not found", template);
- return r;
- }
-
- return 0;
-}
-
static int find_paths_to_edit(sd_bus *bus, char **names, char ***paths) {
_cleanup_free_ char *user_home = NULL;
_cleanup_free_ char *user_runtime = NULL;
assert(names);
assert(paths);
- if (arg_scope == UNIT_FILE_USER) {
- r = user_config_home(&user_home);
- if (r < 0)
- return log_oom();
- else if (r == 0) {
- log_error("Cannot edit units for the user instance: home directory unknown");
- return -1;
- }
-
- r = user_runtime_dir(&user_runtime);
- if (r < 0)
- return log_oom();
- else if (r == 0) {
- log_error("Cannot edit units for the user instance: runtime directory unknown");
- return -1;
- }
- }
-
- r = lookup_paths_init(&lp,
- arg_scope == UNIT_FILE_SYSTEM ? SYSTEMD_SYSTEM : SYSTEMD_USER,
- arg_scope == UNIT_FILE_USER,
- arg_root,
- NULL, NULL, NULL);
- if (r < 0) {
- log_error_errno(r, "Failed get lookup paths: %m");
+ r = init_home_and_lookup_paths(&user_home, &user_runtime, &lp);
+ if (r < 0)
return r;
- }
avoid_bus_cache = !bus || avoid_bus();
STRV_FOREACH(name, names) {
_cleanup_free_ char *path = NULL;
- _cleanup_free_ char *template = NULL;
char *new_path, *tmp_path;
- template = unit_name_template(*name);
- if (!template)
- return log_oom();
-
- r = unit_find_path(bus, *name, template, avoid_bus_cache, &lp, &path);
+ r = unit_find_paths(bus, *name, avoid_bus_cache, &lp, &path, NULL);
if (r < 0)
return r;
- else if (r == 0) {
- continue;
- }
+ else if (r == 0 || !path)
+ // FIXME: support units with path==NULL (no FragmentPath)
+ return log_error_errno(ENOENT, "Unit %s not found, cannot edit.", *name);
if (arg_full)
- r = unit_file_create_copy(template, path, user_home, user_runtime, &new_path, &tmp_path);
+ r = unit_file_create_copy(*name, path, user_home, user_runtime, &new_path, &tmp_path);
else
- r = unit_file_create_drop_in(template, user_home, user_runtime, &new_path, &tmp_path);
-
+ r = unit_file_create_drop_in(*name, user_home, user_runtime, &new_path, &tmp_path);
if (r < 0)
- continue;
+ return r;
r = strv_push_pair(paths, new_path, tmp_path);
if (r < 0)
{ "check", MORE, 2, check_unit_active },
{ "is-failed", MORE, 2, check_unit_failed },
{ "show", MORE, 1, show },
- { "cat", MORE, 2, cat },
+ { "cat", MORE, 2, cat, NOBUS },
{ "status", MORE, 1, show },
{ "help", MORE, 2, show },
{ "snapshot", LESS, 2, snapshot },
~ianmdlvl / elogind.git / blobdiff