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-rw-r--r--Makefile.am5
-rw-r--r--src/automount.c5
-rw-r--r--src/conf-parser.c4
-rw-r--r--src/dbus-path.c52
-rw-r--r--src/dbus-path.h33
-rw-r--r--src/dbus.c2
-rw-r--r--src/load-fragment.c99
-rw-r--r--src/mount.c16
-rw-r--r--src/path.c578
-rw-r--r--src/path.h85
-rw-r--r--src/service.c1
-rw-r--r--src/socket.c1
-rw-r--r--src/socket.h8
-rw-r--r--src/timer.c12
-rw-r--r--src/timer.h4
-rw-r--r--src/unit.c4
-rw-r--r--src/unit.h4
-rw-r--r--src/util.c29
-rw-r--r--src/util.h2
19 files changed, 919 insertions, 25 deletions
diff --git a/Makefile.am b/Makefile.am
index b404bbedff..9b0e04f905 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -77,7 +77,8 @@ interface_DATA = \
org.freedesktop.systemd1.Mount.xml \
org.freedesktop.systemd1.Automount.xml \
org.freedesktop.systemd1.Snapshot.xml \
- org.freedesktop.systemd1.Swap.xml
+ org.freedesktop.systemd1.Swap.xml \
+ org.freedesktop.systemd1.Path.xml
dist_systemunit_DATA = \
units/emergency.service \
@@ -189,6 +190,7 @@ COMMON_SOURCES = \
src/snapshot.c \
src/socket.c \
src/timer.c \
+ src/path.c \
src/load-dropin.c \
src/execute.c \
src/dbus.c \
@@ -205,6 +207,7 @@ COMMON_SOURCES = \
src/dbus-snapshot.c \
src/dbus-device.c \
src/dbus-execute.c \
+ src/dbus-path.c \
src/cgroup.c \
src/mount-setup.c \
src/hostname-setup.c \
diff --git a/src/automount.c b/src/automount.c
index 32680461c2..d83f3ed053 100644
--- a/src/automount.c
+++ b/src/automount.c
@@ -562,12 +562,15 @@ static int automount_start(Unit *u) {
assert(a);
+ assert(a->state == AUTOMOUNT_DEAD || a->state == AUTOMOUNT_MAINTAINANCE);
+
if (path_is_mount_point(a->where)) {
log_error("Path %s is already a mount point, refusing start for %s", a->where, u->meta.id);
return -EEXIST;
}
- assert(a->state == AUTOMOUNT_DEAD || a->state == AUTOMOUNT_MAINTAINANCE);
+ if (a->mount->meta.load_state != UNIT_LOADED)
+ return -ENOENT;
a->failure = false;
automount_enter_waiting(a);
diff --git a/src/conf-parser.c b/src/conf-parser.c
index 6994211b10..20f7641b13 100644
--- a/src/conf-parser.c
+++ b/src/conf-parser.c
@@ -337,6 +337,8 @@ int config_parse_path(
if (!(n = strdup(rvalue)))
return -ENOMEM;
+ path_kill_slashes(n);
+
free(*s);
*s = n;
@@ -441,6 +443,8 @@ int config_parse_path_strv(
goto fail;
}
+ path_kill_slashes(n[k]);
+
k++;
}
diff --git a/src/dbus-path.c b/src/dbus-path.c
new file mode 100644
index 0000000000..ed1dc265fc
--- /dev/null
+++ b/src/dbus-path.c
@@ -0,0 +1,52 @@
+/*-*- Mode: C; c-basic-offset: 8 -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2010 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+
+#include "dbus-unit.h"
+#include "dbus-path.h"
+#include "dbus-execute.h"
+
+#define BUS_PATH_INTERFACE \
+ " <interface name=\"org.freedesktop.systemd1.Path\">\n" \
+ " <property name=\"Unit\" type=\"s\" access=\"read\"/>\n" \
+ " </interface>\n" \
+
+#define INTROSPECTION \
+ DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
+ "<node>\n" \
+ BUS_UNIT_INTERFACE \
+ BUS_PATH_INTERFACE \
+ BUS_PROPERTIES_INTERFACE \
+ BUS_INTROSPECTABLE_INTERFACE \
+ "</node>\n"
+
+const char bus_path_interface[] = BUS_PATH_INTERFACE;
+
+DBusHandlerResult bus_path_message_handler(Unit *u, DBusMessage *message) {
+ const BusProperty properties[] = {
+ BUS_UNIT_PROPERTIES,
+ { "org.freedesktop.systemd1.Path", "Unit", bus_property_append_string, "s", &u->path.unit->meta.id },
+ { NULL, NULL, NULL, NULL, NULL }
+ };
+
+ return bus_default_message_handler(u->meta.manager, message, INTROSPECTION, properties);
+}
diff --git a/src/dbus-path.h b/src/dbus-path.h
new file mode 100644
index 0000000000..15f5869894
--- /dev/null
+++ b/src/dbus-path.h
@@ -0,0 +1,33 @@
+/*-*- Mode: C; c-basic-offset: 8 -*-*/
+
+#ifndef foodbuspathhfoo
+#define foodbuspathhfoo
+
+/***
+ This file is part of systemd.
+
+ Copyright 2010 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <dbus/dbus.h>
+
+#include "unit.h"
+
+DBusHandlerResult bus_path_message_handler(Unit *u, DBusMessage *message);
+
+extern const char bus_path_interface[];
+
+#endif
diff --git a/src/dbus.c b/src/dbus.c
index 6dd495d4df..f5bbc5815a 100644
--- a/src/dbus.c
+++ b/src/dbus.c
@@ -41,6 +41,7 @@
#include "dbus-snapshot.h"
#include "dbus-swap.h"
#include "dbus-timer.h"
+#include "dbus-path.h"
static const char bus_properties_interface[] = BUS_PROPERTIES_INTERFACE;
static const char bus_introspectable_interface[] = BUS_INTROSPECTABLE_INTERFACE;
@@ -60,6 +61,7 @@ const char *const bus_interface_table[] = {
"org.freedesktop.systemd1.Snapshot", bus_snapshot_interface,
"org.freedesktop.systemd1.Swap", bus_swap_interface,
"org.freedesktop.systemd1.Timer", bus_timer_interface,
+ "org.freedesktop.systemd1.Path", bus_path_interface,
NULL
};
diff --git a/src/load-fragment.c b/src/load-fragment.c
index 889e621100..a706880b9a 100644
--- a/src/load-fragment.c
+++ b/src/load-fragment.c
@@ -213,6 +213,8 @@ static int config_parse_listen(
free(p);
return -ENOMEM;
}
+
+ path_kill_slashes(p->path);
} else {
p->type = SOCKET_SOCKET;
@@ -450,6 +452,8 @@ static int config_parse_exec(
nce->argv = n;
nce->path = path;
+ path_kill_slashes(nce->path);
+
exec_command_append_list(e, nce);
return 0;
@@ -1068,6 +1072,77 @@ static int config_parse_timer_unit(
return 0;
}
+static int config_parse_path_spec(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ Path *p = data;
+ PathSpec *s;
+ PathType b;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if ((b = path_type_from_string(lvalue)) < 0) {
+ log_error("[%s:%u] Failed to parse path type: %s", filename, line, lvalue);
+ return -EINVAL;
+ }
+
+ if (!path_is_absolute(rvalue)) {
+ log_error("[%s:%u] Path is not absolute: %s", filename, line, rvalue);
+ return -EINVAL;
+ }
+
+ if (!(s = new0(PathSpec, 1)))
+ return -ENOMEM;
+
+ if (!(s->path = strdup(rvalue))) {
+ free(s);
+ return -ENOMEM;
+ }
+
+ path_kill_slashes(s->path);
+
+ s->type = b;
+ s->inotify_fd = -1;
+
+ LIST_PREPEND(PathSpec, spec, p->specs, s);
+
+ return 0;
+}
+
+static int config_parse_path_unit(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ Path *t = data;
+ int r;
+
+ if (endswith(rvalue, ".path")) {
+ log_error("[%s:%u] Unit cannot be of type path: %s", filename, line, rvalue);
+ return -EINVAL;
+ }
+
+ if ((r = manager_load_unit(t->meta.manager, rvalue, NULL, &t->unit)) < 0) {
+ log_error("[%s:%u] Failed to load unit: %s", filename, line, rvalue);
+ return r;
+ }
+
+ return 0;
+}
+
#define FOLLOW_MAX 8
static int open_follow(char **filename, FILE **_f, Set *names, char **_final) {
@@ -1269,7 +1344,8 @@ static int load_from_path(Unit *u, const char *path) {
[UNIT_MOUNT] = "Mount",
[UNIT_AUTOMOUNT] = "Automount",
[UNIT_SNAPSHOT] = "Snapshot",
- [UNIT_SWAP] = "Swap"
+ [UNIT_SWAP] = "Swap",
+ [UNIT_PATH] = "Path"
};
#define EXEC_CONTEXT_CONFIG_ITEMS(context, section) \
@@ -1386,15 +1462,20 @@ static int load_from_path(Unit *u, const char *path) {
{ "Where", config_parse_path, &u->automount.where, "Automount" },
- { "What", config_parse_path, &u->swap.parameters_fragment.what, "Swap" },
- { "Priority", config_parse_int, &u->swap.parameters_fragment.priority, "Swap" },
+ { "What", config_parse_path, &u->swap.parameters_fragment.what, "Swap" },
+ { "Priority", config_parse_int, &u->swap.parameters_fragment.priority, "Swap" },
+
+ { "OnActive", config_parse_timer, &u->timer, "Timer" },
+ { "OnBoot", config_parse_timer, &u->timer, "Timer" },
+ { "OnStartup", config_parse_timer, &u->timer, "Timer" },
+ { "OnUnitActive", config_parse_timer, &u->timer, "Timer" },
+ { "OnUnitInactive", config_parse_timer, &u->timer, "Timer" },
+ { "Unit", config_parse_timer_unit, &u->timer, "Timer" },
- { "OnActive", config_parse_timer, &u->timer, "Timer" },
- { "OnBoot", config_parse_timer, &u->timer, "Timer" },
- { "OnStartup", config_parse_timer, &u->timer, "Timer" },
- { "OnUnitActive", config_parse_timer, &u->timer, "Timer" },
- { "OnUnitInactive", config_parse_timer, &u->timer, "Timer" },
- { "Unit", config_parse_timer_unit, &u->timer, "Timer" },
+ { "PathExists", config_parse_path_spec, &u->path, "Path" },
+ { "PathChanged", config_parse_path_spec, &u->path, "Path" },
+ { "DirectoryNotEmpty", config_parse_path_spec, &u->path, "Path" },
+ { "Unit", config_parse_path_unit, &u->path, "Path" },
{ NULL, NULL, NULL, NULL }
};
diff --git a/src/mount.c b/src/mount.c
index 01fc2dffbb..dfe4f875e1 100644
--- a/src/mount.c
+++ b/src/mount.c
@@ -167,6 +167,19 @@ static int mount_add_swap_links(Mount *m) {
return 0;
}
+static int mount_add_path_links(Mount *m) {
+ Meta *other;
+ int r;
+
+ assert(m);
+
+ LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_PATH])
+ if ((r = path_add_one_mount_link((Path*) other, m)) < 0)
+ return r;
+
+ return 0;
+}
+
static int mount_add_automount_links(Mount *m) {
Meta *other;
int r;
@@ -341,6 +354,9 @@ static int mount_load(Unit *u) {
if ((r = mount_add_swap_links(m)) < 0)
return r;
+ if ((r = mount_add_path_links(m)) < 0)
+ return r;
+
if ((r = mount_add_automount_links(m)) < 0)
return r;
diff --git a/src/path.c b/src/path.c
new file mode 100644
index 0000000000..b40a8297ff
--- /dev/null
+++ b/src/path.c
@@ -0,0 +1,578 @@
+/*-*- Mode: C; c-basic-offset: 8 -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2010 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <sys/inotify.h>
+#include <sys/epoll.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+#include <unistd.h>
+
+#include "unit.h"
+#include "unit-name.h"
+#include "path.h"
+#include "dbus-path.h"
+
+static const UnitActiveState state_translation_table[_PATH_STATE_MAX] = {
+ [PATH_DEAD] = UNIT_INACTIVE,
+ [PATH_WAITING] = UNIT_ACTIVE,
+ [PATH_RUNNING] = UNIT_ACTIVE,
+ [PATH_MAINTAINANCE] = UNIT_INACTIVE
+};
+
+static void path_done(Unit *u) {
+ Path *p = PATH(u);
+ PathSpec *s;
+
+ assert(p);
+
+ while ((s = p->specs)) {
+ LIST_REMOVE(PathSpec, spec, p->specs, s);
+ free(s);
+ }
+}
+
+int path_add_one_mount_link(Path *p, Mount *m) {
+ PathSpec *s;
+ int r;
+
+ assert(p);
+ assert(m);
+
+ if (p->meta.load_state != UNIT_LOADED ||
+ m->meta.load_state != UNIT_LOADED)
+ return 0;
+
+ LIST_FOREACH(spec, s, p->specs) {
+
+ if (!path_startswith(s->path, m->where))
+ continue;
+
+ if ((r = unit_add_dependency(UNIT(m), UNIT_BEFORE, UNIT(p), true)) < 0)
+ return r;
+
+ if ((r = unit_add_dependency(UNIT(p), UNIT_REQUIRES, UNIT(m), true)) < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+static int path_add_mount_links(Path *p) {
+ Meta *other;
+ int r;
+
+ assert(p);
+
+ LIST_FOREACH(units_per_type, other, p->meta.manager->units_per_type[UNIT_MOUNT])
+ if ((r = path_add_one_mount_link(p, (Mount*) other)) < 0)
+ return r;
+
+ return 0;
+}
+
+static int path_verify(Path *p) {
+ assert(p);
+
+ if (UNIT(p)->meta.load_state != UNIT_LOADED)
+ return 0;
+
+ if (!p->specs) {
+ log_error("%s lacks path setting. Refusing.", p->meta.id);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int path_load(Unit *u) {
+ Path *p = PATH(u);
+ int r;
+
+ assert(u);
+ assert(u->meta.load_state == UNIT_STUB);
+
+ if ((r = unit_load_fragment_and_dropin(u)) < 0)
+ return r;
+
+ if (u->meta.load_state == UNIT_LOADED) {
+
+ if (!p->unit)
+ if ((r = unit_load_related_unit(u, ".service", &p->unit)))
+ return r;
+
+ if ((r = unit_add_dependency(u, UNIT_BEFORE, p->unit, true)) < 0)
+ return r;
+
+ if ((r = path_add_mount_links(p)) < 0)
+ return r;
+ }
+
+ return path_verify(p);
+}
+
+static void path_dump(Unit *u, FILE *f, const char *prefix) {
+ Path *p = PATH(u);
+ const char *prefix2;
+ char *p2;
+ PathSpec *s;
+
+ p2 = strappend(prefix, "\t");
+ prefix2 = p2 ? p2 : prefix;
+
+ fprintf(f,
+ "%sPath State: %s\n"
+ "%sUnit: %s\n",
+ prefix, path_state_to_string(p->state),
+ prefix, p->unit->meta.id);
+
+ LIST_FOREACH(spec, s, p->specs)
+ fprintf(f,
+ "%s%s: %s\n",
+ prefix,
+ path_type_to_string(s->type),
+ s->path);
+
+ free(p2);
+}
+
+static void path_unwatch_one(Path *p, PathSpec *s) {
+
+ if (s->inotify_fd < 0)
+ return;
+
+ unit_unwatch_fd(UNIT(p), &s->watch);
+
+ close_nointr_nofail(s->inotify_fd);
+ s->inotify_fd = -1;
+}
+
+static int path_watch_one(Path *p, PathSpec *s) {
+ static const int flags_table[_PATH_TYPE_MAX] = {
+ [PATH_EXISTS] = IN_DELETE_SELF|IN_MOVE_SELF,
+ [PATH_CHANGED] = IN_DELETE_SELF|IN_MOVE_SELF|IN_ATTRIB|IN_CLOSE_WRITE|IN_CREATE|IN_DELETE|IN_MOVED_FROM|IN_MOVED_TO,
+ [PATH_DIRECTORY_NOT_EMPTY] = IN_DELETE_SELF|IN_MOVE_SELF|IN_CREATE|IN_MOVED_TO
+ };
+
+ bool exists = false;
+ char *k;
+ int r;
+
+ assert(p);
+ assert(s);
+
+ path_unwatch_one(p, s);
+
+ if (!(k = strdup(s->path)))
+ return -ENOMEM;
+
+ if ((s->inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC)) < 0) {
+ r = -errno;
+ goto fail;
+ }
+
+ if (unit_watch_fd(UNIT(p), s->inotify_fd, EPOLLIN, &s->watch) < 0) {
+ r = -errno;
+ goto fail;
+ }
+
+ if ((s->primary_wd = inotify_add_watch(s->inotify_fd, k, flags_table[s->type])) >= 0)
+ exists = true;
+
+ for (;;) {
+ int flags;
+ char *slash;
+
+ /* This assumes the path was passed through path_kill_slashes()! */
+ if (!(slash = strrchr(k, '/')))
+ break;
+
+ *slash = 0;
+
+ flags = IN_DELETE_SELF|IN_MOVE_SELF;
+ if (!exists)
+ flags |= IN_CREATE | IN_MOVED_TO | IN_ATTRIB;
+
+ if (inotify_add_watch(s->inotify_fd, k, flags) >= 0)
+ exists = true;
+ }
+
+ return 0;
+
+fail:
+ free(k);
+
+ path_unwatch_one(p, s);
+ return r;
+}
+
+static void path_unwatch(Path *p) {
+ PathSpec *s;
+
+ assert(p);
+
+ LIST_FOREACH(spec, s, p->specs)
+ path_unwatch_one(p, s);
+}
+
+static int path_watch(Path *p) {
+ int r;
+ PathSpec *s;
+
+ assert(p);
+
+ LIST_FOREACH(spec, s, p->specs)
+ if ((r = path_watch_one(p, s)) < 0)
+ return r;
+
+ return 0;
+}
+
+static void path_set_state(Path *p, PathState state) {
+ PathState old_state;
+ assert(p);
+
+ old_state = p->state;
+ p->state = state;
+
+ if (state != PATH_WAITING)
+ path_unwatch(p);
+
+ if (state != old_state)
+ log_debug("%s changed %s -> %s",
+ p->meta.id,
+ path_state_to_string(old_state),
+ path_state_to_string(state));
+
+ unit_notify(UNIT(p), state_translation_table[old_state], state_translation_table[state]);
+}
+
+static void path_enter_waiting(Path *p, bool initial);
+
+static int path_coldplug(Unit *u) {
+ Path *p = PATH(u);
+
+ assert(p);
+ assert(p->state == PATH_DEAD);
+
+ if (p->deserialized_state != p->state) {
+
+ if (p->deserialized_state == PATH_WAITING ||
+ p->deserialized_state == PATH_RUNNING)
+ path_enter_waiting(p, true);
+ else
+ path_set_state(p, p->deserialized_state);
+ }
+
+ return 0;
+}
+
+static void path_enter_dead(Path *p, bool success) {
+ assert(p);
+
+ if (!success)
+ p->failure = true;
+
+ path_set_state(p, p->failure ? PATH_MAINTAINANCE : PATH_DEAD);
+}
+
+static void path_enter_running(Path *p) {
+ int r;
+ assert(p);
+
+ if ((r = manager_add_job(UNIT(p)->meta.manager, JOB_START, p->unit, JOB_REPLACE, true, NULL)) < 0)
+ goto fail;
+
+ path_set_state(p, PATH_RUNNING);
+ return;
+
+fail:
+ log_warning("%s failed to queue unit startup job: %s", p->meta.id, strerror(-r));
+ path_enter_dead(p, false);
+}
+
+
+static void path_enter_waiting(Path *p, bool initial) {
+ PathSpec *s;
+ int r;
+ bool good = false;
+
+ LIST_FOREACH(spec, s, p->specs) {
+
+ switch (s->type) {
+
+ case PATH_EXISTS:
+ good = access(s->path, F_OK) >= 0;
+ break;
+
+ case PATH_DIRECTORY_NOT_EMPTY:
+ good = dir_is_empty(s->path) == 0;
+ break;
+
+ case PATH_CHANGED: {
+ bool b;
+
+ b = access(s->path, F_OK) >= 0;
+ good = !initial && b != s->previous_exists;
+ s->previous_exists = b;
+ break;
+ }
+
+ default:
+ ;
+ }
+
+ if (good)
+ break;
+ }
+
+ if (good) {
+ path_enter_running(p);
+ return;
+ }
+
+ if ((r = path_watch(p)) < 0)
+ goto fail;
+
+ path_set_state(p, PATH_WAITING);
+ return;
+
+fail:
+ log_warning("%s failed to enter waiting state: %s", p->meta.id, strerror(-r));
+ path_enter_dead(p, false);
+}
+
+static int path_start(Unit *u) {
+ Path *p = PATH(u);
+
+ assert(p);
+ assert(p->state == PATH_DEAD || p->state == PATH_MAINTAINANCE);
+
+ if (p->unit->meta.load_state != UNIT_LOADED)
+ return -ENOENT;
+
+ p->failure = false;
+path_enter_waiting(p, true);
+ return 0;
+}
+
+static int path_stop(Unit *u) {
+ Path *p = PATH(u);
+
+ assert(p);
+ assert(p->state == PATH_WAITING || p->state == PATH_RUNNING);
+
+ path_enter_dead(p, true);
+ return 0;
+}
+
+static int path_serialize(Unit *u, FILE *f, FDSet *fds) {
+ Path *p = PATH(u);
+
+ assert(u);
+ assert(f);
+ assert(fds);
+
+ unit_serialize_item(u, f, "state", path_state_to_string(p->state));
+
+ return 0;
+}
+
+static int path_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
+ Path *p = PATH(u);
+
+ assert(u);
+ assert(key);
+ assert(value);
+ assert(fds);
+
+ if (streq(key, "state")) {
+ PathState state;
+
+ if ((state = path_state_from_string(value)) < 0)
+ log_debug("Failed to parse state value %s", value);
+ else
+ p->deserialized_state = state;
+ } else
+ log_debug("Unknown serialization key '%s'", key);
+
+ return 0;
+}
+
+static UnitActiveState path_active_state(Unit *u) {
+ assert(u);
+
+ return state_translation_table[PATH(u)->state];
+}
+
+static const char *path_sub_state_to_string(Unit *u) {
+ assert(u);
+
+ return path_state_to_string(PATH(u)->state);
+}
+
+static void path_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
+ Path *p = PATH(u);
+ int l;
+ ssize_t k;
+ struct inotify_event *buf = NULL;
+ PathSpec *s;
+
+ assert(p);
+ assert(fd >= 0);
+
+ if (p->state != PATH_WAITING)
+ return;
+
+ log_debug("inotify wakeup on %s.", u->meta.id);
+
+ if (events != EPOLLIN) {
+ log_error("Got Invalid poll event on inotify.");
+ goto fail;
+ }
+
+ LIST_FOREACH(spec, s, p->specs)
+ if (s->inotify_fd == fd)
+ break;
+
+ if (!s) {
+ log_error("Got event on unknown fd.");
+ goto fail;
+ }
+
+ if (ioctl(fd, FIONREAD, &l) < 0) {
+ log_error("FIONREAD failed: %s", strerror(errno));
+ goto fail;
+ }
+
+ if (!(buf = malloc(l))) {
+ log_error("Failed to allocate buffer: %s", strerror(-ENOMEM));
+ goto fail;
+ }
+
+ if ((k = read(fd, buf, l)) < 0) {
+ log_error("Failed to read inotify event: %s", strerror(-errno));
+ goto fail;
+ }
+
+ if ((size_t) k < sizeof(struct inotify_event) ||
+ (size_t) k < sizeof(struct inotify_event) + buf->len) {
+ log_error("inotify event too small.");
+ goto fail;
+ }
+
+ if (s->type == PATH_CHANGED && s->primary_wd == buf->wd)
+ path_enter_running(p);
+ else
+ path_enter_waiting(p, false);
+
+ free(buf);
+
+ return;
+
+fail:
+ free(buf);
+ path_enter_dead(p, false);
+}
+
+void path_unit_notify(Unit *u, UnitActiveState new_state) {
+ char *n;
+ int r;
+ Iterator i;
+
+ if (u->meta.type == UNIT_PATH)
+ return;
+
+ SET_FOREACH(n, u->meta.names, i) {
+ char *k;
+ Unit *t;
+ Path *p;
+
+ if (!(k = unit_name_change_suffix(n, ".path"))) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ t = manager_get_unit(u->meta.manager, k);
+ free(k);
+
+ if (!t)
+ continue;
+
+ if (t->meta.load_state != UNIT_LOADED)
+ continue;
+
+ p = PATH(t);
+
+ if (p->unit != u)
+ continue;
+
+ if (p->state == PATH_RUNNING && new_state == UNIT_INACTIVE) {
+ log_debug("%s got notified about unit deactivation.", p->meta.id);
+ path_enter_waiting(p, false);
+ }
+ }
+
+ return;
+
+fail:
+ log_error("Failed find path unit: %s", strerror(-r));
+}
+
+static const char* const path_state_table[_PATH_STATE_MAX] = {
+ [PATH_DEAD] = "dead",
+ [PATH_WAITING] = "waiting",
+ [PATH_RUNNING] = "running",
+ [PATH_MAINTAINANCE] = "maintainance"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(path_state, PathState);
+
+static const char* const path_type_table[_PATH_TYPE_MAX] = {
+ [PATH_EXISTS] = "PathExists",
+ [PATH_CHANGED] = "PathChanged",
+ [PATH_DIRECTORY_NOT_EMPTY] = "DirectoryNotEmpty"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(path_type, PathType);
+
+const UnitVTable path_vtable = {
+ .suffix = ".path",
+
+ .done = path_done,
+ .load = path_load,
+
+ .coldplug = path_coldplug,
+
+ .dump = path_dump,
+
+ .start = path_start,
+ .stop = path_stop,
+
+ .serialize = path_serialize,
+ .deserialize_item = path_deserialize_item,
+
+ .active_state = path_active_state,
+ .sub_state_to_string = path_sub_state_to_string,
+
+ .fd_event = path_fd_event,
+
+ .bus_message_handler = bus_path_message_handler
+};
diff --git a/src/path.h b/src/path.h
new file mode 100644
index 0000000000..21a7dc4934
--- /dev/null
+++ b/src/path.h
@@ -0,0 +1,85 @@
+/*-*- Mode: C; c-basic-offset: 8 -*-*/
+
+#ifndef foopathhfoo
+#define foopathhfoo
+
+/***
+ This file is part of systemd.
+
+ Copyright 2010 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+typedef struct Path Path;
+
+#include "unit.h"
+#include "mount.h"
+
+typedef enum PathState {
+ PATH_DEAD,
+ PATH_WAITING,
+ PATH_RUNNING,
+ PATH_MAINTAINANCE,
+ _PATH_STATE_MAX,
+ _PATH_STATE_INVALID = -1
+} PathState;
+
+typedef enum PathType {
+ PATH_EXISTS,
+ PATH_DIRECTORY_NOT_EMPTY,
+ PATH_CHANGED,
+ _PATH_TYPE_MAX,
+ _PATH_TYPE_INVALID = -1
+} PathType;
+
+typedef struct PathSpec {
+ PathType type;
+ char *path;
+
+ int inotify_fd;
+ int primary_wd;
+ bool previous_exists;
+
+ Watch watch;
+
+ LIST_FIELDS(struct PathSpec, spec);
+} PathSpec;
+
+struct Path {
+ Meta meta;
+
+ LIST_HEAD(PathSpec, specs);
+
+ PathState state, deserialized_state;
+ Unit *unit;
+
+ bool failure;
+};
+
+void path_unit_notify(Unit *u, UnitActiveState new_state);
+
+/* Called from the mount code figure out if a mount is a dependency of
+ * any of the paths of this path object */
+int path_add_one_mount_link(Path *p, Mount *m);
+
+extern const UnitVTable path_vtable;
+
+const char* path_state_to_string(PathState i);
+PathState path_state_from_string(const char *s);
+
+const char* path_type_to_string(PathType i);
+PathType path_type_from_string(const char *s);
+
+#endif
diff --git a/src/service.c b/src/service.c
index 07b6e4e05a..2f699cd1e6 100644
--- a/src/service.c
+++ b/src/service.c
@@ -1708,7 +1708,6 @@ static int service_start(Unit *u) {
/* Make sure we don't enter a busy loop of some kind. */
if (!ratelimit_test(&s->ratelimit)) {
log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
- service_enter_dead(s, false, true);
return -ECANCELED;
}
diff --git a/src/socket.c b/src/socket.c
index ef7674f463..909151752c 100644
--- a/src/socket.c
+++ b/src/socket.c
@@ -58,7 +58,6 @@ static void socket_init(Unit *u) {
assert(u);
assert(u->meta.load_state == UNIT_STUB);
- s->timer_watch.type = WATCH_INVALID;
s->backlog = SOMAXCONN;
s->timeout_usec = DEFAULT_TIMEOUT_USEC;
s->directory_mode = 0755;
diff --git a/src/socket.h b/src/socket.h
index 5aa5f2783c..2067eb4254 100644
--- a/src/socket.h
+++ b/src/socket.h
@@ -62,9 +62,7 @@ typedef enum SocketType {
_SOCKET_FIFO_INVALID = -1
} SocketType;
-typedef struct SocketPort SocketPort;
-
-struct SocketPort {
+typedef struct SocketPort {
SocketType type;
int fd;
@@ -72,8 +70,8 @@ struct SocketPort {
char *path;
Watch fd_watch;
- LIST_FIELDS(SocketPort, port);
-};
+ LIST_FIELDS(struct SocketPort, port);
+} SocketPort;
struct Socket {
Meta meta;
diff --git a/src/timer.c b/src/timer.c
index e95b4d66e1..b025051f2b 100644
--- a/src/timer.c
+++ b/src/timer.c
@@ -41,7 +41,6 @@ static void timer_init(Unit *u) {
assert(u->meta.load_state == UNIT_STUB);
t->next_elapse = (usec_t) -1;
- t->timer_watch.type = WATCH_INVALID;
}
static void timer_done(Unit *u) {
@@ -274,8 +273,12 @@ static int timer_start(Unit *u) {
Timer *t = TIMER(u);
assert(t);
- assert(t->state == TIMER_DEAD);
+ assert(t->state == TIMER_DEAD || t->state == TIMER_MAINTAINANCE);
+
+ if (t->unit->meta.load_state != UNIT_LOADED)
+ return -ENOENT;
+ t->failure = false;
timer_enter_waiting(t, true);
return 0;
}
@@ -373,9 +376,12 @@ void timer_unit_notify(Unit *u, UnitActiveState new_state) {
if (!p)
continue;
+ if (p->meta.load_state != UNIT_LOADED)
+ continue;
+
t = TIMER(p);
- if (t->meta.load_state != UNIT_LOADED)
+ if (t->unit != u)
continue;
/* Reenable all timers that depend on unit state */
diff --git a/src/timer.h b/src/timer.h
index 69c5609a9c..eb22688a3b 100644
--- a/src/timer.h
+++ b/src/timer.h
@@ -61,11 +61,9 @@ struct Timer {
Meta meta;
LIST_HEAD(TimerValue, values);
-
- TimerState state, deserialized_state;
-
usec_t next_elapse;
+ TimerState state, deserialized_state;
Unit *unit;
Watch timer_watch;
diff --git a/src/unit.c b/src/unit.c
index 2af2685e0d..57b3b77954 100644
--- a/src/unit.c
+++ b/src/unit.c
@@ -48,7 +48,8 @@ const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX] = {
[UNIT_MOUNT] = &mount_vtable,
[UNIT_AUTOMOUNT] = &automount_vtable,
[UNIT_SNAPSHOT] = &snapshot_vtable,
- [UNIT_SWAP] = &swap_vtable
+ [UNIT_SWAP] = &swap_vtable,
+ [UNIT_PATH] = &path_vtable
};
Unit *unit_new(Manager *m) {
@@ -956,6 +957,7 @@ void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns) {
u->meta.active_exit_timestamp = ts;
timer_unit_notify(u, ns);
+ path_unit_notify(u, ns);
if (u->meta.job) {
diff --git a/src/unit.h b/src/unit.h
index fd0defe2d1..f585fa6238 100644
--- a/src/unit.h
+++ b/src/unit.h
@@ -62,6 +62,7 @@ enum UnitType {
UNIT_SNAPSHOT,
UNIT_TIMER,
UNIT_SWAP,
+ UNIT_PATH,
_UNIT_TYPE_MAX,
_UNIT_TYPE_INVALID = -1
};
@@ -201,6 +202,7 @@ struct Meta {
#include "automount.h"
#include "snapshot.h"
#include "swap.h"
+#include "path.h"
union Unit {
Meta meta;
@@ -213,6 +215,7 @@ union Unit {
Automount automount;
Snapshot snapshot;
Swap swap;
+ Path path;
};
struct UnitVTable {
@@ -344,6 +347,7 @@ DEFINE_CAST(MOUNT, Mount);
DEFINE_CAST(AUTOMOUNT, Automount);
DEFINE_CAST(SNAPSHOT, Snapshot);
DEFINE_CAST(SWAP, Swap);
+DEFINE_CAST(PATH, Path);
Unit *unit_new(Manager *m);
void unit_free(Unit *u);
diff --git a/src/util.c b/src/util.c
index a8ea4a97ab..7664df59d0 100644
--- a/src/util.c
+++ b/src/util.c
@@ -2092,6 +2092,35 @@ bool is_device_path(const char *path) {
path_startswith(path, "/sys/");
}
+int dir_is_empty(const char *path) {
+ DIR *d;
+ int r;
+ struct dirent buf, *de;
+
+ if (!(d = opendir(path)))
+ return -errno;
+
+ for (;;) {
+ if ((r = readdir_r(d, &buf, &de)) > 0) {
+ r = -r;
+ break;
+ }
+
+ if (!de) {
+ r = 1;
+ break;
+ }
+
+ if (!ignore_file(de->d_name)) {
+ r = 0;
+ break;
+ }
+ }
+
+ closedir(d);
+ return r;
+}
+
static const char *const ioprio_class_table[] = {
[IOPRIO_CLASS_NONE] = "none",
[IOPRIO_CLASS_RT] = "realtime",
diff --git a/src/util.h b/src/util.h
index b411df0cf2..efc993c370 100644
--- a/src/util.h
+++ b/src/util.h
@@ -247,6 +247,8 @@ int path_is_mount_point(const char *path);
bool is_device_path(const char *path);
+int dir_is_empty(const char *path);
+
extern char * __progname;
const char *ioprio_class_to_string(int i);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-04 20:00:39 +0000