#include "load-fragment.h"
#include "load-dropin.h"
#include "log.h"
+#include "unit-name.h"
+#include "specifier.h"
+#include "dbus-unit.h"
const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX] = {
[UNIT_SERVICE] = &service_vtable,
[UNIT_DEVICE] = &device_vtable,
[UNIT_MOUNT] = &mount_vtable,
[UNIT_AUTOMOUNT] = &automount_vtable,
- [UNIT_SNAPSHOT] = &snapshot_vtable
+ [UNIT_SNAPSHOT] = &snapshot_vtable,
+ [UNIT_SWAP] = &swap_vtable
};
-UnitType unit_name_to_type(const char *n) {
- UnitType t;
-
- assert(n);
-
- for (t = 0; t < _UNIT_TYPE_MAX; t++)
- if (endswith(n, unit_vtable[t]->suffix))
- return t;
-
- return _UNIT_TYPE_INVALID;
-}
-
-#define VALID_CHARS \
- "0123456789" \
- "abcdefghijklmnopqrstuvwxyz" \
- "ABCDEFGHIJKLMNOPQRSTUVWXYZ" \
- "-_.\\"
-
-bool unit_name_is_valid(const char *n) {
- UnitType t;
- const char *e, *i;
-
- assert(n);
-
- if (strlen(n) >= UNIT_NAME_MAX)
- return false;
-
- t = unit_name_to_type(n);
- if (t < 0 || t >= _UNIT_TYPE_MAX)
- return false;
-
- if (!(e = strrchr(n, '.')))
- return false;
-
- if (e == n)
- return false;
-
- for (i = n; i < e; i++)
- if (!strchr(VALID_CHARS, *i))
- return false;
-
- return true;
-}
-
-char *unit_name_change_suffix(const char *n, const char *suffix) {
- char *e, *r;
- size_t a, b;
-
- assert(n);
- assert(unit_name_is_valid(n));
- assert(suffix);
-
- assert_se(e = strrchr(n, '.'));
- a = e - n;
- b = strlen(suffix);
-
- if (!(r = new(char, a + b + 1)))
- return NULL;
-
- memcpy(r, n, a);
- memcpy(r+a, suffix, b+1);
-
- return r;
-}
-
Unit *unit_new(Manager *m) {
Unit *u;
int unit_add_name(Unit *u, const char *text) {
UnitType t;
- char *s;
+ char *s = NULL, *i = NULL;
int r;
assert(u);
assert(text);
- if (!unit_name_is_valid(text))
- return -EINVAL;
+ if (unit_name_is_template(text)) {
+ if (!u->meta.instance)
+ return -EINVAL;
- if ((t = unit_name_to_type(text)) == _UNIT_TYPE_INVALID)
- return -EINVAL;
+ s = unit_name_replace_instance(text, u->meta.instance);
+ } else
+ s = strdup(text);
- if (u->meta.type != _UNIT_TYPE_INVALID && t != u->meta.type)
- return -EINVAL;
+ if (!s)
+ return -ENOMEM;
- if (u->meta.type != _UNIT_TYPE_INVALID &&
- UNIT_VTABLE(u)->no_alias &&
- !set_isempty(u->meta.names))
- return -EEXIST;
+ if (!unit_name_is_valid(s)) {
+ r = -EINVAL;
+ goto fail;
+ }
- if (!(s = strdup(text)))
- return -ENOMEM;
+ assert_se((t = unit_name_to_type(s)) >= 0);
- if ((r = set_put(u->meta.names, s)) < 0) {
- free(s);
+ if (u->meta.type != _UNIT_TYPE_INVALID && t != u->meta.type) {
+ r = -EINVAL;
+ goto fail;
+ }
- if (r == -EEXIST)
- return 0;
+ if ((r = unit_name_to_instance(s, &i)) < 0)
+ goto fail;
- return r;
+ if (i && unit_vtable[t]->no_instances)
+ goto fail;
+
+ if (u->meta.type != _UNIT_TYPE_INVALID && !streq_ptr(u->meta.instance, i)) {
+ r = -EINVAL;
+ goto fail;
+ }
+
+ if (unit_vtable[t]->no_alias &&
+ !set_isempty(u->meta.names) &&
+ !set_get(u->meta.names, s)) {
+ r = -EEXIST;
+ goto fail;
+ }
+
+ if (hashmap_size(u->meta.manager->units) >= MANAGER_MAX_NAMES) {
+ r = -E2BIG;
+ goto fail;
+ }
+
+ if ((r = set_put(u->meta.names, s)) < 0) {
+ if (r == -EEXIST)
+ r = 0;
+ goto fail;
}
if ((r = hashmap_put(u->meta.manager->units, s, u)) < 0) {
set_remove(u->meta.names, s);
- free(s);
- return r;
+ goto fail;
}
if (u->meta.type == _UNIT_TYPE_INVALID) {
- LIST_PREPEND(Meta, units_per_type, u->meta.manager->units_per_type[t], &u->meta);
u->meta.type = t;
+ u->meta.id = s;
+ u->meta.instance = i;
+
+ LIST_PREPEND(Meta, units_per_type, u->meta.manager->units_per_type[t], &u->meta);
if (UNIT_VTABLE(u)->init)
UNIT_VTABLE(u)->init(u);
- }
-
- if (!u->meta.id)
- u->meta.id = s;
+ } else
+ free(i);
unit_add_to_dbus_queue(u);
return 0;
+
+fail:
+ free(s);
+ free(i);
+
+ return r;
}
int unit_choose_id(Unit *u, const char *name) {
- char *s;
+ char *s, *t = NULL;
assert(u);
assert(name);
+ if (unit_name_is_template(name)) {
+
+ if (!u->meta.instance)
+ return -EINVAL;
+
+ if (!(t = unit_name_replace_instance(name, u->meta.instance)))
+ return -ENOMEM;
+
+ name = t;
+ }
+
/* Selects one of the names of this unit as the id */
+ s = set_get(u->meta.names, (char*) name);
+ free(t);
- if (!(s = set_get(u->meta.names, (char*) name)))
+ if (!s)
return -ENOENT;
u->meta.id = s;
-
unit_add_to_dbus_queue(u);
+
return 0;
}
return 0;
}
+bool unit_check_gc(Unit *u) {
+ assert(u);
+
+ if (UNIT_VTABLE(u)->no_gc)
+ return true;
+
+ if (u->meta.job)
+ return true;
+
+ if (unit_active_state(u) != UNIT_INACTIVE)
+ return true;
+
+ if (UNIT_VTABLE(u)->check_gc)
+ if (UNIT_VTABLE(u)->check_gc(u))
+ return true;
+
+ return false;
+}
+
void unit_add_to_load_queue(Unit *u) {
assert(u);
assert(u->meta.type != _UNIT_TYPE_INVALID);
u->meta.in_cleanup_queue = true;
}
+void unit_add_to_gc_queue(Unit *u) {
+ assert(u);
+
+ if (u->meta.in_gc_queue || u->meta.in_cleanup_queue)
+ return;
+
+ if (unit_check_gc(u))
+ return;
+
+ LIST_PREPEND(Meta, gc_queue, u->meta.manager->gc_queue, &u->meta);
+ u->meta.in_gc_queue = true;
+
+ u->meta.manager->n_in_gc_queue ++;
+
+ if (u->meta.manager->gc_queue_timestamp <= 0)
+ u->meta.manager->gc_queue_timestamp = now(CLOCK_MONOTONIC);
+}
+
void unit_add_to_dbus_queue(Unit *u) {
assert(u);
assert(u->meta.type != _UNIT_TYPE_INVALID);
for (d = 0; d < _UNIT_DEPENDENCY_MAX; d++)
set_remove(other->meta.dependencies[d], u);
+
+ unit_add_to_gc_queue(other);
}
set_free(s);
if (u->meta.in_cleanup_queue)
LIST_REMOVE(Meta, cleanup_queue, u->meta.manager->cleanup_queue, &u->meta);
+ if (u->meta.in_gc_queue) {
+ LIST_REMOVE(Meta, gc_queue, u->meta.manager->gc_queue, &u->meta);
+ u->meta.manager->n_in_gc_queue--;
+ }
+
/* Free data and next 'smaller' objects */
if (u->meta.job)
job_free(u->meta.job);
free(t);
set_free(u->meta.names);
+ free(u->meta.instance);
+
free(u);
}
return UNIT_VTABLE(u)->active_state(u);
}
+const char* unit_sub_state_to_string(Unit *u) {
+ assert(u);
+
+ return UNIT_VTABLE(u)->sub_state_to_string(u);
+}
+
static void complete_move(Set **s, Set **other) {
assert(s);
assert(other);
assert(u);
assert(other);
assert(u->meta.manager == other->meta.manager);
+ assert(u->meta.type != _UNIT_TYPE_INVALID);
other = unit_follow_merge(other);
if (other == u)
return 0;
- if (u->meta.type != u->meta.type)
+ if (u->meta.type != other->meta.type)
+ return -EINVAL;
+
+ if (!streq_ptr(u->meta.instance, other->meta.instance))
return -EINVAL;
if (other->meta.load_state != UNIT_STUB &&
int unit_merge_by_name(Unit *u, const char *name) {
Unit *other;
+ int r;
+ char *s = NULL;
assert(u);
assert(name);
+ if (unit_name_is_template(name)) {
+ if (!u->meta.instance)
+ return -EINVAL;
+
+ if (!(s = unit_name_replace_instance(name, u->meta.instance)))
+ return -ENOMEM;
+
+ name = s;
+ }
+
if (!(other = manager_get_unit(u->meta.manager, name)))
- return unit_add_name(u, name);
+ r = unit_add_name(u, name);
+ else
+ r = unit_merge(u, other);
- return unit_merge(u, other);
+ free(s);
+ return r;
}
Unit* unit_follow_merge(Unit *u) {
/* If syslog or kernel logging is requested, make sure our own
* logging daemon is run first. */
- if ((r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_LOGGER_SOCKET)) < 0)
+ if ((r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_LOGGER_SOCKET, NULL, true)) < 0)
return r;
if (u->meta.manager->running_as != MANAGER_SESSION)
- if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_LOGGER_SOCKET)) < 0)
+ if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_LOGGER_SOCKET, NULL, true)) < 0)
return r;
return 0;
}
-const char* unit_id(Unit *u) {
- assert(u);
-
- if (u->meta.id)
- return u->meta.id;
-
- return set_first(u->meta.names);
-}
-
const char *unit_description(Unit *u) {
assert(u);
if (u->meta.description)
return u->meta.description;
- return unit_id(u);
+ return u->meta.id;
}
void unit_dump(Unit *u, FILE *f, const char *prefix) {
char *p2;
const char *prefix2;
CGroupBonding *b;
- char timestamp1[FORMAT_TIMESTAMP_MAX], timestamp2[FORMAT_TIMESTAMP_MAX];
+ char
+ timestamp1[FORMAT_TIMESTAMP_MAX],
+ timestamp2[FORMAT_TIMESTAMP_MAX],
+ timestamp3[FORMAT_TIMESTAMP_MAX],
+ timestamp4[FORMAT_TIMESTAMP_MAX];
assert(u);
+ assert(u->meta.type >= 0);
if (!prefix)
prefix = "";
prefix2 = p2 ? p2 : prefix;
fprintf(f,
- "%s→ Unit %s:\n"
+ "%s-> Unit %s:\n"
"%s\tDescription: %s\n"
+ "%s\tInstance: %s\n"
"%s\tUnit Load State: %s\n"
"%s\tUnit Active State: %s\n"
+ "%s\tInactive Exit Timestamp: %s\n"
"%s\tActive Enter Timestamp: %s\n"
- "%s\tActive Exit Timestamp: %s\n",
- prefix, unit_id(u),
+ "%s\tActive Exit Timestamp: %s\n"
+ "%s\tInactive Enter Timestamp: %s\n"
+ "%s\tGC Check Good: %s\n",
+ prefix, u->meta.id,
prefix, unit_description(u),
+ prefix, strna(u->meta.instance),
prefix, unit_load_state_to_string(u->meta.load_state),
prefix, unit_active_state_to_string(unit_active_state(u)),
- prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->meta.active_enter_timestamp)),
- prefix, strna(format_timestamp(timestamp2, sizeof(timestamp2), u->meta.active_exit_timestamp)));
+ prefix, strna(format_timestamp(timestamp1, sizeof(timestamp1), u->meta.inactive_exit_timestamp)),
+ prefix, strna(format_timestamp(timestamp2, sizeof(timestamp2), u->meta.active_enter_timestamp)),
+ prefix, strna(format_timestamp(timestamp3, sizeof(timestamp3), u->meta.active_exit_timestamp)),
+ prefix, strna(format_timestamp(timestamp4, sizeof(timestamp4), u->meta.inactive_enter_timestamp)),
+ prefix, yes_no(unit_check_gc(u)));
SET_FOREACH(t, u->meta.names, i)
fprintf(f, "%s\tName: %s\n", prefix, t);
Unit *other;
SET_FOREACH(other, u->meta.dependencies[d], i)
- fprintf(f, "%s\t%s: %s\n", prefix, unit_dependency_to_string(d), unit_id(other));
+ fprintf(f, "%s\t%s: %s\n", prefix, unit_dependency_to_string(d), other->meta.id);
}
if (u->meta.load_state == UNIT_LOADED) {
} else if (u->meta.load_state == UNIT_MERGED)
fprintf(f,
"%s\tMerged into: %s\n",
- prefix, unit_id(u->meta.merged_into));
+ prefix, u->meta.merged_into->meta.id);
if (u->meta.job)
job_dump(u->meta.job, f, prefix2);
return 0;
}
+/* Common implementation for multiple backends */
+int unit_load_nop(Unit *u) {
+ assert(u);
+
+ if (u->meta.load_state == UNIT_STUB)
+ u->meta.load_state = UNIT_LOADED;
+
+ return 0;
+}
+
int unit_load(Unit *u) {
int r;
assert((u->meta.load_state != UNIT_MERGED) == !u->meta.merged_into);
unit_add_to_dbus_queue(unit_follow_merge(u));
+ unit_add_to_gc_queue(u);
return 0;
u->meta.load_state = UNIT_FAILED;
unit_add_to_dbus_queue(u);
- log_error("Failed to load configuration for %s: %s", unit_id(u), strerror(-r));
+ log_debug("Failed to load configuration for %s: %s", u->meta.id, strerror(-r));
return r;
}
if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
return;
- SET_FOREACH(other, u->meta.dependencies[UNIT_SOFT_REQUIRED_BY], i)
+ SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRED_BY_OVERRIDABLE], i)
if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
return;
if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
return;
- log_debug("Service %s is not needed anymore. Stopping.", unit_id(u));
+ log_debug("Service %s is not needed anymore. Stopping.", u->meta.id);
/* Ok, nobody needs us anymore. Sniff. Then let's commit suicide */
manager_add_job(u->meta.manager, JOB_STOP, u, JOB_FAIL, true, NULL);
if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other)))
manager_add_job(u->meta.manager, JOB_START, other, JOB_REPLACE, true, NULL);
- SET_FOREACH(other, u->meta.dependencies[UNIT_SOFT_REQUIRES], i)
+ SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES_OVERRIDABLE], i)
if (!UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(other)))
manager_add_job(u->meta.manager, JOB_START, other, JOB_FAIL, false, NULL);
SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES], i)
if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
unit_check_uneeded(other);
- SET_FOREACH(other, u->meta.dependencies[UNIT_SOFT_REQUIRES], i)
+ SET_FOREACH(other, u->meta.dependencies[UNIT_REQUIRES_OVERRIDABLE], i)
if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
unit_check_uneeded(other);
SET_FOREACH(other, u->meta.dependencies[UNIT_WANTS], i)
SET_FOREACH(other, u->meta.dependencies[UNIT_REQUISITE], i)
if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
unit_check_uneeded(other);
- SET_FOREACH(other, u->meta.dependencies[UNIT_SOFT_REQUISITE], i)
+ SET_FOREACH(other, u->meta.dependencies[UNIT_REQUISITE_OVERRIDABLE], i)
if (!UNIT_IS_INACTIVE_OR_DEACTIVATING(unit_active_state(other)))
unit_check_uneeded(other);
}
void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns) {
bool unexpected = false;
+ usec_t ts;
assert(u);
assert(os < _UNIT_ACTIVE_STATE_MAX);
* this function will be called too and the utmp code below
* relies on that! */
+ ts = now(CLOCK_REALTIME);
+
+ if (os == UNIT_INACTIVE && ns != UNIT_INACTIVE)
+ u->meta.inactive_exit_timestamp = ts;
+ else if (os != UNIT_INACTIVE && ns == UNIT_INACTIVE)
+ u->meta.inactive_enter_timestamp = ts;
+
if (!UNIT_IS_ACTIVE_OR_RELOADING(os) && UNIT_IS_ACTIVE_OR_RELOADING(ns))
- u->meta.active_enter_timestamp = now(CLOCK_REALTIME);
+ u->meta.active_enter_timestamp = ts;
else if (UNIT_IS_ACTIVE_OR_RELOADING(os) && !UNIT_IS_ACTIVE_OR_RELOADING(ns))
- u->meta.active_exit_timestamp = now(CLOCK_REALTIME);
+ u->meta.active_exit_timestamp = ts;
if (u->meta.job) {
unit_check_uneeded(u);
unit_add_to_dbus_queue(u);
+ unit_add_to_gc_queue(u);
}
int unit_watch_fd(Unit *u, int fd, uint32_t events, Watch *w) {
assert(u);
assert(pid >= 1);
+ /* Watch a specific PID. We only support one unit watching
+ * each PID for now. */
+
return hashmap_put(u->meta.manager->watch_pids, UINT32_TO_PTR(pid), u);
}
assert(u);
assert(pid >= 1);
- hashmap_remove(u->meta.manager->watch_pids, UINT32_TO_PTR(pid));
+ hashmap_remove_value(u->meta.manager->watch_pids, UINT32_TO_PTR(pid), u);
}
int unit_watch_timer(Unit *u, usec_t delay, Watch *w) {
assert(w->type == WATCH_TIMER && w->data.unit == u);
assert_se(epoll_ctl(u->meta.manager->epoll_fd, EPOLL_CTL_DEL, w->fd, NULL) >= 0);
- assert_se(close_nointr(w->fd) == 0);
+ close_nointr_nofail(w->fd);
w->fd = -1;
w->type = WATCH_INVALID;
}
}
-int unit_add_dependency(Unit *u, UnitDependency d, Unit *other) {
+int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_reference) {
static const UnitDependency inverse_table[_UNIT_DEPENDENCY_MAX] = {
[UNIT_REQUIRES] = UNIT_REQUIRED_BY,
- [UNIT_SOFT_REQUIRES] = UNIT_SOFT_REQUIRED_BY,
+ [UNIT_REQUIRES_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE,
[UNIT_WANTS] = UNIT_WANTED_BY,
[UNIT_REQUISITE] = UNIT_REQUIRED_BY,
- [UNIT_SOFT_REQUISITE] = UNIT_SOFT_REQUIRED_BY,
+ [UNIT_REQUISITE_OVERRIDABLE] = UNIT_REQUIRED_BY_OVERRIDABLE,
[UNIT_REQUIRED_BY] = _UNIT_DEPENDENCY_INVALID,
- [UNIT_SOFT_REQUIRED_BY] = _UNIT_DEPENDENCY_INVALID,
+ [UNIT_REQUIRED_BY_OVERRIDABLE] = _UNIT_DEPENDENCY_INVALID,
[UNIT_WANTED_BY] = _UNIT_DEPENDENCY_INVALID,
[UNIT_CONFLICTS] = UNIT_CONFLICTS,
[UNIT_BEFORE] = UNIT_AFTER,
- [UNIT_AFTER] = UNIT_BEFORE
+ [UNIT_AFTER] = UNIT_BEFORE,
+ [UNIT_REFERENCES] = UNIT_REFERENCED_BY,
+ [UNIT_REFERENCED_BY] = UNIT_REFERENCES
};
- int r;
+ int r, q = 0, v = 0, w = 0;
assert(u);
assert(d >= 0 && d < _UNIT_DEPENDENCY_MAX);
if (u == other)
return 0;
- if ((r = set_ensure_allocated(&u->meta.dependencies[d], trivial_hash_func, trivial_compare_func)) < 0)
- return r;
+ if (UNIT_VTABLE(u)->no_requires &&
+ (d == UNIT_REQUIRES ||
+ d == UNIT_REQUIRES_OVERRIDABLE ||
+ d == UNIT_REQUISITE ||
+ d == UNIT_REQUISITE_OVERRIDABLE)) {
+ return -EINVAL;
+ }
- if ((r = set_ensure_allocated(&other->meta.dependencies[inverse_table[d]], trivial_hash_func, trivial_compare_func)) < 0)
+ if ((r = set_ensure_allocated(&u->meta.dependencies[d], trivial_hash_func, trivial_compare_func)) < 0 ||
+ (r = set_ensure_allocated(&other->meta.dependencies[inverse_table[d]], trivial_hash_func, trivial_compare_func)) < 0)
return r;
- if ((r = set_put(u->meta.dependencies[d], other)) < 0)
- return r;
+ if (add_reference)
+ if ((r = set_ensure_allocated(&u->meta.dependencies[UNIT_REFERENCES], trivial_hash_func, trivial_compare_func)) < 0 ||
+ (r = set_ensure_allocated(&other->meta.dependencies[UNIT_REFERENCED_BY], trivial_hash_func, trivial_compare_func)) < 0)
+ return r;
- if ((r = set_put(other->meta.dependencies[inverse_table[d]], u)) < 0) {
- set_remove(u->meta.dependencies[d], other);
- return r;
+ if ((q = set_put(u->meta.dependencies[d], other)) < 0)
+ return q;
+
+ if ((v = set_put(other->meta.dependencies[inverse_table[d]], u)) < 0) {
+ r = v;
+ goto fail;
+ }
+
+ if (add_reference) {
+ if ((w = set_put(u->meta.dependencies[UNIT_REFERENCES], other)) < 0) {
+ r = w;
+ goto fail;
+ }
+
+ if ((r = set_put(other->meta.dependencies[UNIT_REFERENCED_BY], u)) < 0)
+ goto fail;
}
unit_add_to_dbus_queue(u);
return 0;
+
+fail:
+ if (q > 0)
+ set_remove(u->meta.dependencies[d], other);
+
+ if (v > 0)
+ set_remove(other->meta.dependencies[inverse_table[d]], u);
+
+ if (w > 0)
+ set_remove(u->meta.dependencies[UNIT_REFERENCES], other);
+
+ return r;
}
-int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name) {
+static const char *resolve_template(Unit *u, const char *name, const char*path, char **p) {
+ char *s;
+
+ assert(u);
+ assert(name || path);
+
+ if (!name)
+ name = file_name_from_path(path);
+
+ if (!unit_name_is_template(name)) {
+ *p = NULL;
+ return name;
+ }
+
+ if (u->meta.instance)
+ s = unit_name_replace_instance(name, u->meta.instance);
+ else {
+ char *i;
+
+ if (!(i = unit_name_to_prefix(u->meta.id)))
+ return NULL;
+
+ s = unit_name_replace_instance(name, i);
+ free(i);
+ }
+
+ if (!s)
+ return NULL;
+
+ *p = s;
+ return s;
+}
+
+int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) {
Unit *other;
int r;
+ char *s;
- if ((r = manager_load_unit(u->meta.manager, name, &other)) < 0)
- return r;
+ assert(u);
+ assert(name || path);
- if ((r = unit_add_dependency(u, d, other)) < 0)
- return r;
+ if (!(name = resolve_template(u, name, path, &s)))
+ return -ENOMEM;
- return 0;
+ if ((r = manager_load_unit(u->meta.manager, name, path, &other)) < 0)
+ goto finish;
+
+ r = unit_add_dependency(u, d, other, add_reference);
+
+finish:
+ free(s);
+ return r;
}
-int unit_add_dependency_by_name_inverse(Unit *u, UnitDependency d, const char *name) {
+int unit_add_dependency_by_name_inverse(Unit *u, UnitDependency d, const char *name, const char *path, bool add_reference) {
Unit *other;
int r;
+ char *s;
- if ((r = manager_load_unit(u->meta.manager, name, &other)) < 0)
- return r;
+ assert(u);
+ assert(name || path);
- if ((r = unit_add_dependency(other, d, u)) < 0)
- return r;
+ if (!(name = resolve_template(u, name, path, &s)))
+ return -ENOMEM;
- return 0;
+ if ((r = manager_load_unit(u->meta.manager, name, path, &other)) < 0)
+ goto finish;
+
+ r = unit_add_dependency(other, d, u, add_reference);
+
+finish:
+ free(s);
+ return r;
}
int set_unit_path(const char *p) {
return 0;
}
-char *unit_name_escape_path(const char *path, const char *suffix) {
- char *r, *t;
- const char *f;
- size_t a, b;
-
- assert(path);
-
- /* Takes a path and a suffix and prefix and makes a nice
- * string suitable as unit name of it, escaping all weird
- * chars on the way.
- *
- * / becomes ., and all chars not alloweed in a unit name get
- * escaped as \xFF, including \ and ., of course. This
- * escaping is hence reversible.
- */
-
- if (!suffix)
- suffix = "";
-
- a = strlen(path);
- b = strlen(suffix);
-
- if (!(r = new(char, a*4+b+1)))
- return NULL;
-
- for (f = path, t = r; *f; f++) {
- if (*f == '/')
- *(t++) = '.';
- else if (*f == '.' || *f == '\\' || !strchr(VALID_CHARS, *f)) {
- *(t++) = '\\';
- *(t++) = 'x';
- *(t++) = hexchar(*f > 4);
- *(t++) = hexchar(*f);
- } else
- *(t++) = *f;
- }
-
- memcpy(t, suffix, b+1);
-
- return r;
-}
-
char *unit_dbus_path(Unit *u) {
char *p, *e;
assert(u);
- if (!(e = bus_path_escape(unit_id(u))))
+ if (!(e = bus_path_escape(u->meta.id)))
return NULL;
if (asprintf(&p, "/org/freedesktop/systemd1/unit/%s", e) < 0) {
static char *default_cgroup_path(Unit *u) {
char *p;
+ int r;
assert(u);
- if (asprintf(&p, "%s/%s", u->meta.manager->cgroup_hierarchy, unit_id(u)) < 0)
- return NULL;
+ if (u->meta.instance) {
+ char *t;
- return p;
+ if (!(t = unit_name_template(u->meta.id)))
+ return NULL;
+
+ r = asprintf(&p, "%s/%s/%s", u->meta.manager->cgroup_hierarchy, t, u->meta.instance);
+ free(t);
+ } else
+ r = asprintf(&p, "%s/%s", u->meta.manager->cgroup_hierarchy, u->meta.id);
+
+ return r < 0 ? NULL : p;
}
int unit_add_cgroup_from_text(Unit *u, const char *name) {
assert(type);
assert(_found);
- if (!(t = unit_name_change_suffix(unit_id(u), type)))
+ if (!(t = unit_name_change_suffix(u->meta.id, type)))
+ return -ENOMEM;
+
+ assert(!unit_has_name(u, t));
+
+ r = manager_load_unit(u->meta.manager, t, NULL, _found);
+ free(t);
+
+ assert(r < 0 || *_found != u);
+
+ return r;
+}
+
+int unit_get_related_unit(Unit *u, const char *type, Unit **_found) {
+ Unit *found;
+ char *t;
+
+ assert(u);
+ assert(type);
+ assert(_found);
+
+ if (!(t = unit_name_change_suffix(u->meta.id, type)))
return -ENOMEM;
assert(!unit_has_name(u, t));
- r = manager_load_unit(u->meta.manager, t, _found);
+ found = manager_get_unit(u->meta.manager, t);
free(t);
- if (r >= 0)
- assert(*_found != u);
+ if (!found)
+ return -ENOENT;
+
+ *_found = found;
+ return 0;
+}
+
+static char *specifier_prefix_and_instance(char specifier, void *data, void *userdata) {
+ Unit *u = userdata;
+ assert(u);
+
+ return unit_name_to_prefix_and_instance(u->meta.id);
+}
+
+static char *specifier_prefix(char specifier, void *data, void *userdata) {
+ Unit *u = userdata;
+ assert(u);
+
+ return unit_name_to_prefix(u->meta.id);
+}
+
+static char *specifier_prefix_unescaped(char specifier, void *data, void *userdata) {
+ Unit *u = userdata;
+ char *p, *r;
+
+ assert(u);
+
+ if (!(p = unit_name_to_prefix(u->meta.id)))
+ return NULL;
+
+ r = unit_name_unescape(p);
+ free(p);
+
+ return r;
+}
+
+static char *specifier_instance_unescaped(char specifier, void *data, void *userdata) {
+ Unit *u = userdata;
+ assert(u);
+
+ if (u->meta.instance)
+ return unit_name_unescape(u->meta.instance);
+
+ return strdup("");
+}
+
+char *unit_name_printf(Unit *u, const char* format) {
+
+ /*
+ * This will use the passed string as format string and
+ * replace the following specifiers:
+ *
+ * %n: the full id of the unit (foo@bar.waldo)
+ * %N: the id of the unit without the suffix (foo@bar)
+ * %p: the prefix (foo)
+ * %i: the instance (bar)
+ */
+
+ const Specifier table[] = {
+ { 'n', specifier_string, u->meta.id },
+ { 'N', specifier_prefix_and_instance, NULL },
+ { 'p', specifier_prefix, NULL },
+ { 'i', specifier_string, u->meta.instance },
+ { 0, NULL, NULL }
+ };
+
+ assert(u);
+ assert(format);
+
+ return specifier_printf(format, table, u);
+}
+
+char *unit_full_printf(Unit *u, const char *format) {
+
+ /* This is similar to unit_name_printf() but also supports
+ * unescaping */
+
+ const Specifier table[] = {
+ { 'n', specifier_string, u->meta.id },
+ { 'N', specifier_prefix_and_instance, NULL },
+ { 'p', specifier_prefix, NULL },
+ { 'P', specifier_prefix_unescaped, NULL },
+ { 'i', specifier_string, u->meta.instance },
+ { 'I', specifier_instance_unescaped, NULL },
+ { 0, NULL, NULL }
+ };
+
+ assert(u);
+ assert(format);
+
+ return specifier_printf(format, table, u);
+}
+
+char **unit_full_printf_strv(Unit *u, char **l) {
+ size_t n;
+ char **r, **i, **j;
+
+ /* Applies unit_full_printf to every entry in l */
+
+ assert(u);
+
+ n = strv_length(l);
+ if (!(r = new(char*, n+1)))
+ return NULL;
+
+ for (i = l, j = r; *i; i++, j++)
+ if (!(*j = unit_full_printf(u, *i)))
+ goto fail;
+ *j = NULL;
return r;
+
+fail:
+ j--;
+ while (j >= r)
+ free(*j);
+
+ free(r);
+
+ return NULL;
+}
+
+int unit_watch_bus_name(Unit *u, const char *name) {
+ assert(u);
+ assert(name);
+
+ /* Watch a specific name on the bus. We only support one unit
+ * watching each name for now. */
+
+ return hashmap_put(u->meta.manager->watch_bus, name, u);
+}
+
+void unit_unwatch_bus_name(Unit *u, const char *name) {
+ assert(u);
+ assert(name);
+
+ hashmap_remove_value(u->meta.manager->watch_bus, name, u);
+}
+
+bool unit_can_serialize(Unit *u) {
+ assert(u);
+
+ return UNIT_VTABLE(u)->serialize && UNIT_VTABLE(u)->deserialize_item;
+}
+
+int unit_serialize(Unit *u, FILE *f, FDSet *fds) {
+ int r;
+
+ assert(u);
+ assert(f);
+ assert(fds);
+
+ if (!unit_can_serialize(u))
+ return 0;
+
+ if ((r = UNIT_VTABLE(u)->serialize(u, f, fds)) < 0)
+ return r;
+
+ /* End marker */
+ fputc('\n', f);
+ return 0;
+}
+
+void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *format, ...) {
+ va_list ap;
+
+ assert(u);
+ assert(f);
+ assert(key);
+ assert(format);
+
+ fputs(key, f);
+ fputc('=', f);
+
+ va_start(ap, format);
+ vfprintf(f, format, ap);
+ va_end(ap);
+
+ fputc('\n', f);
+}
+
+void unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value) {
+ assert(u);
+ assert(f);
+ assert(key);
+ assert(value);
+
+ fprintf(f, "%s=%s\n", key, value);
+}
+
+int unit_deserialize(Unit *u, FILE *f, FDSet *fds) {
+ int r;
+
+ assert(u);
+ assert(f);
+ assert(fds);
+
+ if (!unit_can_serialize(u))
+ return 0;
+
+ for (;;) {
+ char line[1024], *l, *v;
+ size_t k;
+
+ if (!fgets(line, sizeof(line), f)) {
+ if (feof(f))
+ return 0;
+ return -errno;
+ }
+
+ l = strstrip(line);
+
+ /* End marker */
+ if (l[0] == 0)
+ return 0;
+
+ k = strcspn(l, "=");
+
+ if (l[k] == '=') {
+ l[k] = 0;
+ v = l+k+1;
+ } else
+ v = l+k;
+
+ if ((r = UNIT_VTABLE(u)->deserialize_item(u, l, v, fds)) < 0)
+ return r;
+ }
+}
+
+int unit_add_node_link(Unit *u, const char *what, bool wants) {
+ Unit *device;
+ char *e;
+ int r;
+
+ assert(u);
+
+ if (!what)
+ return 0;
+
+ /* Adds in links to the device node that this unit is based on */
+
+ if (!path_startswith(what, "/dev/") && !path_startswith(what, "/sys/"))
+ return 0;
+
+ if (!(e = unit_name_build_escape(what+1, NULL, ".device")))
+ return -ENOMEM;
+
+ r = manager_load_unit(u->meta.manager, e, NULL, &device);
+ free(e);
+
+ if (r < 0)
+ return r;
+
+ if ((r = unit_add_dependency(u, UNIT_AFTER, device, true)) < 0)
+ return r;
+
+ if ((r = unit_add_dependency(u, UNIT_REQUIRES, device, true)) < 0)
+ return r;
+
+ if (wants)
+ if ((r = unit_add_dependency(device, UNIT_WANTS, u, false)) < 0)
+ return r;
+
+ return 0;
}
static const char* const unit_type_table[_UNIT_TYPE_MAX] = {
[UNIT_DEVICE] = "device",
[UNIT_MOUNT] = "mount",
[UNIT_AUTOMOUNT] = "automount",
- [UNIT_SNAPSHOT] = "snapshot"
+ [UNIT_SNAPSHOT] = "snapshot",
+ [UNIT_SWAP] = "swap"
};
DEFINE_STRING_TABLE_LOOKUP(unit_type, UnitType);
static const char* const unit_dependency_table[_UNIT_DEPENDENCY_MAX] = {
[UNIT_REQUIRES] = "Requires",
- [UNIT_SOFT_REQUIRES] = "SoftRequires",
+ [UNIT_REQUIRES_OVERRIDABLE] = "RequiresOverridable",
[UNIT_WANTS] = "Wants",
[UNIT_REQUISITE] = "Requisite",
- [UNIT_SOFT_REQUISITE] = "SoftRequisite",
+ [UNIT_REQUISITE_OVERRIDABLE] = "RequisiteOverridable",
[UNIT_REQUIRED_BY] = "RequiredBy",
- [UNIT_SOFT_REQUIRED_BY] = "SoftRequiredBy",
+ [UNIT_REQUIRED_BY_OVERRIDABLE] = "RequiredByOverridable",
[UNIT_WANTED_BY] = "WantedBy",
[UNIT_CONFLICTS] = "Conflicts",
[UNIT_BEFORE] = "Before",
[UNIT_AFTER] = "After",
+ [UNIT_REFERENCES] = "References",
+ [UNIT_REFERENCED_BY] = "ReferencedBy"
};
DEFINE_STRING_TABLE_LOOKUP(unit_dependency, UnitDependency);
~ianmdlvl / elogind.git / blobdiff