summaryrefslogtreecommitdiff
path: root/service.c
diff options
context:
space:
mode:
Diffstat (limited to 'service.c')
-rw-r--r--service.c216
1 files changed, 161 insertions, 55 deletions
diff --git a/service.c b/service.c
index 53d5505c2e..caef844056 100644
--- a/service.c
+++ b/service.c
@@ -35,6 +35,17 @@
#define NEWLINES "\n\r"
#define LINE_MAX 4096
+static const char * const rcnd_table[] = {
+ "../rc0.d", SPECIAL_RUNLEVEL0_TARGET,
+ "../rc1.d", SPECIAL_RUNLEVEL1_TARGET,
+ "../rc2.d", SPECIAL_RUNLEVEL2_TARGET,
+ "../rc3.d", SPECIAL_RUNLEVEL3_TARGET,
+ "../rc4.d", SPECIAL_RUNLEVEL4_TARGET,
+ "../rc5.d", SPECIAL_RUNLEVEL5_TARGET,
+ "../rc6.d", SPECIAL_RUNLEVEL6_TARGET
+};
+
+
static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
[SERVICE_DEAD] = UNIT_INACTIVE,
[SERVICE_START_PRE] = UNIT_ACTIVATING,
@@ -128,8 +139,8 @@ static int sysv_chkconfig_order(Service *s) {
if (s->sysv_start_priority < 0)
return 0;
- /* If no LSB header is found we try to order init scripts via
- * the start priority of the chkconfig header. */
+ /* For each pair of services where at least one lacks a LSB
+ * header, we use the start priority value to order things. */
LIST_FOREACH(units_per_type, other, UNIT(s)->meta.manager->units_per_type[UNIT_SERVICE]) {
Service *t;
@@ -143,6 +154,9 @@ static int sysv_chkconfig_order(Service *s) {
if (t->sysv_start_priority < 0)
continue;
+ if (s->sysv_has_lsb && t->sysv_has_lsb)
+ continue;
+
if (t->sysv_start_priority < s->sysv_start_priority)
d = UNIT_AFTER;
else if (t->sysv_start_priority > s->sysv_start_priority)
@@ -200,7 +214,67 @@ static int sysv_exec_commands(Service *s) {
return 0;
}
-static int service_load_sysv_path(Service *s, const char *path) {
+static int priority_from_rcd(Service *s, const char *init_script) {
+ char **p;
+ unsigned i;
+
+ STRV_FOREACH(p, UNIT(s)->meta.manager->sysvinit_path)
+ for (i = 0; i < ELEMENTSOF(rcnd_table); i += 2) {
+ char *path;
+ DIR *d;
+ struct dirent *de;
+
+ if (asprintf(&path, "%s/%s", *p, rcnd_table[i]) < 0)
+ return -ENOMEM;
+
+ d = opendir(path);
+ free(path);
+
+ if (!d) {
+ if (errno != ENOENT)
+ log_warning("opendir() failed on %s: %s", path, strerror(errno));
+
+ continue;
+ }
+
+ while ((de = readdir(d))) {
+ int a, b;
+
+ if (ignore_file(de->d_name))
+ continue;
+
+ if (de->d_name[0] != 'S')
+ continue;
+
+ if (strlen(de->d_name) < 4)
+ continue;
+
+ if (!streq(de->d_name + 3, init_script))
+ continue;
+
+ /* Yay, we found it! Now decode the priority */
+
+ a = undecchar(de->d_name[1]);
+ b = undecchar(de->d_name[2]);
+
+ if (a < 0 || b < 0)
+ continue;
+
+ s->sysv_start_priority = a*10 + b;
+
+ log_debug("Determined priority %i from link farm for %s", s->sysv_start_priority, unit_id(UNIT(s)));
+
+ closedir(d);
+ return 0;
+ }
+
+ closedir(d);
+ }
+
+ return 0;
+}
+
+static int service_load_sysv_path(Service *s, const char *path, UnitLoadState *new_state) {
FILE *f;
Unit *u;
unsigned line = 0;
@@ -211,7 +285,10 @@ static int service_load_sysv_path(Service *s, const char *path) {
LSB,
LSB_DESCRIPTION
} state = NORMAL;
- bool has_lsb = false;
+
+ assert(s);
+ assert(path);
+ assert(new_state);
u = UNIT(s);
@@ -249,7 +326,7 @@ static int service_load_sysv_path(Service *s, const char *path) {
if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
state = LSB;
- has_lsb = true;
+ s->sysv_has_lsb = true;
continue;
}
@@ -470,14 +547,21 @@ static int service_load_sysv_path(Service *s, const char *path) {
}
}
- /* If the init script has no LSB header, then let's
- * enforce the ordering via the chkconfig
- * priorities */
+ /* If init scripts have no LSB header, then we enforce the
+ * ordering via the chkconfig priorities. We try to determine
+ * a priority for *all* init scripts here, since they are
+ * needed as soon as at least one non-LSB script is used. */
- if (!has_lsb)
- if ((r = sysv_chkconfig_order(s)) < 0)
+ if (s->sysv_start_priority < 0) {
+ log_debug("%s has no chkconfig header, trying to determine SysV priority from link farm.", unit_id(u));
+
+ if ((r = priority_from_rcd(s, file_name_from_path(path))) < 0)
goto finish;
+ if (s->sysv_start_priority < 0)
+ log_warning("%s has neither a chkconfig header nor a directory link, cannot order unit!", unit_id(u));
+ }
+
if ((r = sysv_exec_commands(s)) < 0)
goto finish;
@@ -485,7 +569,8 @@ static int service_load_sysv_path(Service *s, const char *path) {
(r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_SYSINIT_SERVICE)) < 0)
goto finish;
- r = 1;
+ *new_state = UNIT_LOADED;
+ r = 0;
finish:
@@ -495,7 +580,7 @@ finish:
return r;
}
-static int service_load_sysv_name(Service *s, const char *name) {
+static int service_load_sysv_name(Service *s, const char *name, UnitLoadState *new_state) {
char **p;
assert(s);
@@ -511,22 +596,26 @@ static int service_load_sysv_name(Service *s, const char *name) {
assert(endswith(path, ".service"));
path[strlen(path)-8] = 0;
- r = service_load_sysv_path(s, path);
+ r = service_load_sysv_path(s, path, new_state);
free(path);
- if (r != 0)
+ if (r < 0)
return r;
+
+ if (*new_state != UNIT_STUB)
+ break;
}
return 0;
}
-static int service_load_sysv(Service *s) {
+static int service_load_sysv(Service *s, UnitLoadState *new_state) {
const char *t;
Iterator i;
int r;
assert(s);
+ assert(new_state);
/* Load service data from SysV init scripts, preferably with
* LSB headers ... */
@@ -535,21 +624,28 @@ static int service_load_sysv(Service *s) {
return 0;
if ((t = unit_id(UNIT(s))))
- if ((r = service_load_sysv_name(s, t)) != 0)
+ if ((r = service_load_sysv_name(s, t, new_state)) < 0)
return r;
- SET_FOREACH(t, UNIT(s)->meta.names, i)
- if ((r == service_load_sysv_name(s, t)) != 0)
- return r;
+ if (*new_state == UNIT_STUB)
+ SET_FOREACH(t, UNIT(s)->meta.names, i) {
+ if ((r == service_load_sysv_name(s, t, new_state)) < 0)
+ return r;
+
+ if (*new_state != UNIT_STUB)
+ break;
+ }
return 0;
}
-static int service_init(Unit *u) {
+static int service_init(Unit *u, UnitLoadState *new_state) {
int r;
Service *s = SERVICE(u);
assert(s);
+ assert(new_state);
+ assert(*new_state == UNIT_STUB);
/* First, reset everything to the defaults, in case this is a
* reload */
@@ -570,31 +666,38 @@ static int service_init(Unit *u) {
s->permissions_start_only = false;
s->root_directory_start_only = false;
+ s->sysv_has_lsb = false;
+
RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
/* Load a .service file */
- if ((r = unit_load_fragment(u)) < 0) {
- service_done(u);
+ if ((r = unit_load_fragment(u, new_state)) < 0)
return r;
- }
/* Load a classic init script as a fallback, if we couldn't find anything */
- if (r == 0)
- if ((r = service_load_sysv(s)) <= 0) {
- service_done(u);
- return r < 0 ? r : -ENOENT;
- }
+ if (*new_state == UNIT_STUB)
+ if ((r = service_load_sysv(s, new_state)) < 0)
+ return r;
- /* Load dropin directory data */
- if ((r = unit_load_dropin(u)) < 0) {
- service_done(u);
- return r;
- }
+ /* Still nothing found? Then let's give up */
+ if (*new_state == UNIT_STUB)
+ return -ENOENT;
- /* Add default cgroup */
- if ((r = unit_add_default_cgroup(u)) < 0) {
- service_done(u);
+ /* We were able to load something, then let's add in the
+ * dropin directories. */
+ if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
return r;
+
+ /* This is a new unit? Then let's add in some extras */
+ if (*new_state == UNIT_LOADED) {
+ if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
+ return r;
+
+ if ((r = unit_add_default_cgroup(u)) < 0)
+ return r;
+
+ if ((r = sysv_chkconfig_order(s)) < 0)
+ return r;
}
return 0;
@@ -645,14 +748,17 @@ static void service_dump(Unit *u, FILE *f, const char *prefix) {
if (s->sysv_path)
fprintf(f,
- "%sSysV Init Script Path: %s\n",
- prefix, s->sysv_path);
+ "%sSysV Init Script Path: %s\n"
+ "%sSysV Init Script has LSB Header: %s\n",
+ prefix, s->sysv_path,
+ prefix, yes_no(s->sysv_has_lsb));
if (s->sysv_start_priority >= 0)
fprintf(f,
- "%sSysV Start Priority: %i\n",
+ "%sSysVStartPriority: %i\n",
prefix, s->sysv_start_priority);
+
free(p2);
}
@@ -1638,17 +1744,6 @@ static void service_cgroup_notify_event(Unit *u) {
}
static int service_enumerate(Manager *m) {
-
- static const char * const rcnd[] = {
- "../rc0.d", SPECIAL_RUNLEVEL0_TARGET,
- "../rc1.d", SPECIAL_RUNLEVEL1_TARGET,
- "../rc2.d", SPECIAL_RUNLEVEL2_TARGET,
- "../rc3.d", SPECIAL_RUNLEVEL3_TARGET,
- "../rc4.d", SPECIAL_RUNLEVEL4_TARGET,
- "../rc5.d", SPECIAL_RUNLEVEL5_TARGET,
- "../rc6.d", SPECIAL_RUNLEVEL6_TARGET
- };
-
char **p;
unsigned i;
DIR *d = NULL;
@@ -1658,12 +1753,12 @@ static int service_enumerate(Manager *m) {
assert(m);
STRV_FOREACH(p, m->sysvinit_path)
- for (i = 0; i < ELEMENTSOF(rcnd); i += 2) {
+ for (i = 0; i < ELEMENTSOF(rcnd_table); i += 2) {
struct dirent *de;
free(path);
path = NULL;
- if (asprintf(&path, "%s/%s", *p, rcnd[i]) < 0) {
+ if (asprintf(&path, "%s/%s", *p, rcnd_table[i]) < 0) {
r = -ENOMEM;
goto finish;
}
@@ -1692,7 +1787,7 @@ static int service_enumerate(Manager *m) {
free(fpath);
fpath = NULL;
- if (asprintf(&fpath, "%s/%s/%s", *p, rcnd[i], de->d_name) < 0) {
+ if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i], de->d_name) < 0) {
r = -ENOMEM;
goto finish;
}
@@ -1715,7 +1810,7 @@ static int service_enumerate(Manager *m) {
if ((r = manager_load_unit(m, name, &service)) < 0)
goto finish;
- if ((r = manager_load_unit(m, rcnd[i+1], &runlevel)) < 0)
+ if ((r = manager_load_unit(m, rcnd_table[i+1], &runlevel)) < 0)
goto finish;
if (de->d_name[0] == 'S') {
@@ -1724,7 +1819,18 @@ static int service_enumerate(Manager *m) {
if ((r = unit_add_dependency(runlevel, UNIT_AFTER, service)) < 0)
goto finish;
- } else {
+
+ } else if (de->d_name[0] == 'K' &&
+ (streq(rcnd_table[i+1], SPECIAL_RUNLEVEL0_TARGET) ||
+ streq(rcnd_table[i+1], SPECIAL_RUNLEVEL6_TARGET))) {
+
+ /* We honour K links only for
+ * halt/reboot. For the normal
+ * runlevels we assume the
+ * stop jobs will be
+ * implicitly added by the
+ * core logic. */
+
if ((r = unit_add_dependency(runlevel, UNIT_CONFLICTS, service)) < 0)
goto finish;
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-18 10:58:39 +0000