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authorLennart Poettering <lennart@poettering.net>2010-06-15 14:45:15 +0200
committerLennart Poettering <lennart@poettering.net>2010-06-15 14:45:15 +0200
commit84e3543ef4c4758621f8a304b14642072303ef82 (patch)
tree3b9bdff9d82ec324ccf3d60e26e064cf773db588 /src
parent2ded0c0442f597dc397f7b0e9a15cf453578d11e (diff)
manager: split off path lookup logic into own .c file
Diffstat (limited to 'src')
-rw-r--r--src/load-dropin.c2
-rw-r--r--src/load-fragment.c2
-rw-r--r--src/manager.c244
-rw-r--r--src/manager.h5
-rw-r--r--src/path-lookup.c269
-rw-r--r--src/path-lookup.h36
-rw-r--r--src/service.c6
7 files changed, 317 insertions, 247 deletions
diff --git a/src/load-dropin.c b/src/load-dropin.c
index 2101e33004..bdf3dd2c2e 100644
--- a/src/load-dropin.c
+++ b/src/load-dropin.c
@@ -79,7 +79,7 @@ int unit_load_dropin(Unit *u) {
char *path;
char **p;
- STRV_FOREACH(p, u->meta.manager->unit_path) {
+ STRV_FOREACH(p, u->meta.manager->lookup_paths.unit_path) {
if (asprintf(&path, "%s/%s.wants", *p, t) < 0)
return -ENOMEM;
diff --git a/src/load-fragment.c b/src/load-fragment.c
index b679fab479..79b0893add 100644
--- a/src/load-fragment.c
+++ b/src/load-fragment.c
@@ -1523,7 +1523,7 @@ static int load_from_path(Unit *u, const char *path) {
} else {
char **p;
- STRV_FOREACH(p, u->meta.manager->unit_path) {
+ STRV_FOREACH(p, u->meta.manager->lookup_paths.unit_path) {
/* Instead of opening the path right away, we manually
* follow all symlinks and add their name to our unit
diff --git a/src/manager.c b/src/manager.c
index b4b963a662..4dcdf2e507 100644
--- a/src/manager.c
+++ b/src/manager.c
@@ -52,6 +52,7 @@
#include "dbus-unit.h"
#include "dbus-job.h"
#include "missing.h"
+#include "path-lookup.h"
/* As soon as 16 units are in our GC queue, make sure to run a gc sweep */
#define GC_QUEUE_ENTRIES_MAX 16
@@ -122,240 +123,6 @@ static int manager_setup_signals(Manager *m) {
return 0;
}
-static char** session_dirs(void) {
- const char *home, *e;
- char *config_home = NULL, *data_home = NULL;
- char **config_dirs = NULL, **data_dirs = NULL;
- char **r = NULL, **t;
-
- /* Implement the mechanisms defined in
- *
- * http://standards.freedesktop.org/basedir-spec/basedir-spec-0.6.html
- *
- * We look in both the config and the data dirs because we
- * want to encourage that distributors ship their unit files
- * as data, and allow overriding as configuration.
- */
-
- home = getenv("HOME");
-
- if ((e = getenv("XDG_CONFIG_HOME"))) {
- if (asprintf(&config_home, "%s/systemd/session", e) < 0)
- goto fail;
-
- } else if (home) {
- if (asprintf(&config_home, "%s/.config/systemd/session", home) < 0)
- goto fail;
- }
-
- if ((e = getenv("XDG_CONFIG_DIRS")))
- if (!(config_dirs = strv_split(e, ":")))
- goto fail;
-
- /* We don't treat /etc/xdg/systemd here as the spec
- * suggests because we assume that that is a link to
- * /etc/systemd/ anyway. */
-
- if ((e = getenv("XDG_DATA_HOME"))) {
- if (asprintf(&data_home, "%s/systemd/session", e) < 0)
- goto fail;
-
- } else if (home) {
- if (asprintf(&data_home, "%s/.local/share/systemd/session", home) < 0)
- goto fail;
-
- /* There is really no need for two unit dirs in $HOME,
- * except to be fully compliant with the XDG spec. We
- * now try to link the two dirs, so that we can
- * minimize disk seeks a little. Further down we'll
- * then filter out this link, if it is actually is
- * one. */
-
- mkdir_parents(data_home, 0777);
- symlink("../../../.config/systemd/session", data_home);
- }
-
- if ((e = getenv("XDG_DATA_DIRS")))
- data_dirs = strv_split(e, ":");
- else
- data_dirs = strv_new("/usr/local/share", "/usr/share", NULL);
-
- if (!data_dirs)
- goto fail;
-
- /* Now merge everything we found. */
- if (config_home) {
- if (!(t = strv_append(r, config_home)))
- goto fail;
- strv_free(r);
- r = t;
- }
-
- if (!(t = strv_merge_concat(r, config_dirs, "/systemd/session")))
- goto finish;
- strv_free(r);
- r = t;
-
- if (!(t = strv_append(r, SESSION_CONFIG_UNIT_PATH)))
- goto fail;
- strv_free(r);
- r = t;
-
- if (data_home) {
- if (!(t = strv_append(r, data_home)))
- goto fail;
- strv_free(r);
- r = t;
- }
-
- if (!(t = strv_merge_concat(r, data_dirs, "/systemd/session")))
- goto fail;
- strv_free(r);
- r = t;
-
- if (!(t = strv_append(r, SESSION_DATA_UNIT_PATH)))
- goto fail;
- strv_free(r);
- r = t;
-
- if (!strv_path_make_absolute_cwd(r))
- goto fail;
-
-finish:
- free(config_home);
- strv_free(config_dirs);
- free(data_home);
- strv_free(data_dirs);
-
- return r;
-
-fail:
- strv_free(r);
- r = NULL;
- goto finish;
-}
-
-static int manager_find_paths(Manager *m) {
- const char *e;
- char *t;
-
- assert(m);
-
- /* Unset previous data, in case we are called on reload */
- strv_free(m->unit_path);
- strv_free(m->sysvinit_path);
- strv_free(m->sysvrcnd_path);
- m->unit_path = m->sysvinit_path = m->sysvrcnd_path = NULL;
-
- /* First priority is whatever has been passed to us via env
- * vars */
- if ((e = getenv("SYSTEMD_UNIT_PATH")))
- if (!(m->unit_path = split_path_and_make_absolute(e)))
- return -ENOMEM;
-
- if (strv_isempty(m->unit_path)) {
-
- /* Nothing is set, so let's figure something out. */
- strv_free(m->unit_path);
-
- if (m->running_as == MANAGER_SESSION) {
- if (!(m->unit_path = session_dirs()))
- return -ENOMEM;
- } else
- if (!(m->unit_path = strv_new(
- SYSTEM_CONFIG_UNIT_PATH, /* /etc/systemd/system/ */
- SYSTEM_DATA_UNIT_PATH, /* /lib/systemd/system/ */
- NULL)))
- return -ENOMEM;
- }
-
- if (m->running_as == MANAGER_INIT) {
- /* /etc/init.d/ compatibility does not matter to users */
-
- if ((e = getenv("SYSTEMD_SYSVINIT_PATH")))
- if (!(m->sysvinit_path = split_path_and_make_absolute(e)))
- return -ENOMEM;
-
- if (strv_isempty(m->sysvinit_path)) {
- strv_free(m->sysvinit_path);
-
- if (!(m->sysvinit_path = strv_new(
- SYSTEM_SYSVINIT_PATH, /* /etc/init.d/ */
- NULL)))
- return -ENOMEM;
- }
-
- if ((e = getenv("SYSTEMD_SYSVRCND_PATH")))
- if (!(m->sysvrcnd_path = split_path_and_make_absolute(e)))
- return -ENOMEM;
-
- if (strv_isempty(m->sysvrcnd_path)) {
- strv_free(m->sysvrcnd_path);
-
- if (!(m->sysvrcnd_path = strv_new(
- SYSTEM_SYSVRCND_PATH, /* /etc/rcN.d/ */
- NULL)))
- return -ENOMEM;
- }
- }
-
- if (m->unit_path)
- if (!strv_path_canonicalize(m->unit_path))
- return -ENOMEM;
-
- if (m->sysvinit_path)
- if (!strv_path_canonicalize(m->sysvinit_path))
- return -ENOMEM;
-
- if (m->sysvrcnd_path)
- if (!strv_path_canonicalize(m->sysvrcnd_path))
- return -ENOMEM;
-
- strv_uniq(m->unit_path);
- strv_uniq(m->sysvinit_path);
- strv_uniq(m->sysvrcnd_path);
-
- if (!strv_isempty(m->unit_path)) {
-
- if (!(t = strv_join(m->unit_path, "\n\t")))
- return -ENOMEM;
- log_debug("Looking for unit files in:\n\t%s", t);
- free(t);
- } else {
- log_debug("Ignoring unit files.");
- strv_free(m->unit_path);
- m->unit_path = NULL;
- }
-
- if (!strv_isempty(m->sysvinit_path)) {
-
- if (!(t = strv_join(m->sysvinit_path, "\n\t")))
- return -ENOMEM;
-
- log_debug("Looking for SysV init scripts in:\n\t%s", t);
- free(t);
- } else {
- log_debug("Ignoring SysV init scripts.");
- strv_free(m->sysvinit_path);
- m->sysvinit_path = NULL;
- }
-
- if (!strv_isempty(m->sysvrcnd_path)) {
-
- if (!(t = strv_join(m->sysvrcnd_path, "\n\t")))
- return -ENOMEM;
-
- log_debug("Looking for SysV rcN.d links in:\n\t%s", t);
- free(t);
- } else {
- log_debug("Ignoring SysV rcN.d links.");
- strv_free(m->sysvrcnd_path);
- m->sysvrcnd_path = NULL;
- }
-
- return 0;
-}
-
int manager_new(ManagerRunningAs running_as, bool confirm_spawn, Manager **_m) {
Manager *m;
int r = -ENOMEM;
@@ -401,7 +168,7 @@ int manager_new(ManagerRunningAs running_as, bool confirm_spawn, Manager **_m) {
if ((m->epoll_fd = epoll_create1(EPOLL_CLOEXEC)) < 0)
goto fail;
- if ((r = manager_find_paths(m)) < 0)
+ if ((r = lookup_paths_init(&m->lookup_paths, m->running_as)) < 0)
goto fail;
if ((r = manager_setup_signals(m)) < 0)
@@ -598,9 +365,7 @@ void manager_free(Manager *m) {
if (m->signal_watch.fd >= 0)
close_nointr_nofail(m->signal_watch.fd);
- strv_free(m->unit_path);
- strv_free(m->sysvinit_path);
- strv_free(m->sysvrcnd_path);
+ lookup_paths_free(&m->lookup_paths);
strv_free(m->environment);
free(m->cgroup_controller);
@@ -2353,7 +2118,8 @@ int manager_reload(Manager *m) {
manager_clear_jobs_and_units(m);
/* Find new unit paths */
- if ((q = manager_find_paths(m)) < 0)
+ lookup_paths_free(&m->lookup_paths);
+ if ((q = lookup_paths_init(&m->lookup_paths, m->running_as)) < 0)
r = q;
/* First, enumerate what we can from all config files */
diff --git a/src/manager.h b/src/manager.h
index a2084e924b..d78bcf5d76 100644
--- a/src/manager.h
+++ b/src/manager.h
@@ -82,6 +82,7 @@ struct Watch {
#include "list.h"
#include "set.h"
#include "dbus.h"
+#include "path-lookup.h"
#define SPECIAL_DEFAULT_TARGET "default.target"
@@ -176,9 +177,7 @@ struct Manager {
unsigned n_snapshots;
- char **unit_path;
- char **sysvinit_path;
- char **sysvrcnd_path;
+ LookupPaths lookup_paths;
char **environment;
diff --git a/src/path-lookup.c b/src/path-lookup.c
new file mode 100644
index 0000000000..1c4b5dc4e1
--- /dev/null
+++ b/src/path-lookup.c
@@ -0,0 +1,269 @@
+/*-*- 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 <assert.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include "util.h"
+#include "strv.h"
+
+#include "path-lookup.h"
+
+static char** session_dirs(void) {
+ const char *home, *e;
+ char *config_home = NULL, *data_home = NULL;
+ char **config_dirs = NULL, **data_dirs = NULL;
+ char **r = NULL, **t;
+
+ /* Implement the mechanisms defined in
+ *
+ * http://standards.freedesktop.org/basedir-spec/basedir-spec-0.6.html
+ *
+ * We look in both the config and the data dirs because we
+ * want to encourage that distributors ship their unit files
+ * as data, and allow overriding as configuration.
+ */
+
+ home = getenv("HOME");
+
+ if ((e = getenv("XDG_CONFIG_HOME"))) {
+ if (asprintf(&config_home, "%s/systemd/session", e) < 0)
+ goto fail;
+
+ } else if (home) {
+ if (asprintf(&config_home, "%s/.config/systemd/session", home) < 0)
+ goto fail;
+ }
+
+ if ((e = getenv("XDG_CONFIG_DIRS")))
+ if (!(config_dirs = strv_split(e, ":")))
+ goto fail;
+
+ /* We don't treat /etc/xdg/systemd here as the spec
+ * suggests because we assume that that is a link to
+ * /etc/systemd/ anyway. */
+
+ if ((e = getenv("XDG_DATA_HOME"))) {
+ if (asprintf(&data_home, "%s/systemd/session", e) < 0)
+ goto fail;
+
+ } else if (home) {
+ if (asprintf(&data_home, "%s/.local/share/systemd/session", home) < 0)
+ goto fail;
+
+ /* There is really no need for two unit dirs in $HOME,
+ * except to be fully compliant with the XDG spec. We
+ * now try to link the two dirs, so that we can
+ * minimize disk seeks a little. Further down we'll
+ * then filter out this link, if it is actually is
+ * one. */
+
+ mkdir_parents(data_home, 0777);
+ symlink("../../../.config/systemd/session", data_home);
+ }
+
+ if ((e = getenv("XDG_DATA_DIRS")))
+ data_dirs = strv_split(e, ":");
+ else
+ data_dirs = strv_new("/usr/local/share", "/usr/share", NULL);
+
+ if (!data_dirs)
+ goto fail;
+
+ /* Now merge everything we found. */
+ if (config_home) {
+ if (!(t = strv_append(r, config_home)))
+ goto fail;
+ strv_free(r);
+ r = t;
+ }
+
+ if (!(t = strv_merge_concat(r, config_dirs, "/systemd/session")))
+ goto finish;
+ strv_free(r);
+ r = t;
+
+ if (!(t = strv_append(r, SESSION_CONFIG_UNIT_PATH)))
+ goto fail;
+ strv_free(r);
+ r = t;
+
+ if (data_home) {
+ if (!(t = strv_append(r, data_home)))
+ goto fail;
+ strv_free(r);
+ r = t;
+ }
+
+ if (!(t = strv_merge_concat(r, data_dirs, "/systemd/session")))
+ goto fail;
+ strv_free(r);
+ r = t;
+
+ if (!(t = strv_append(r, SESSION_DATA_UNIT_PATH)))
+ goto fail;
+ strv_free(r);
+ r = t;
+
+ if (!strv_path_make_absolute_cwd(r))
+ goto fail;
+
+finish:
+ free(config_home);
+ strv_free(config_dirs);
+ free(data_home);
+ strv_free(data_dirs);
+
+ return r;
+
+fail:
+ strv_free(r);
+ r = NULL;
+ goto finish;
+}
+
+int lookup_paths_init(LookupPaths *p, ManagerRunningAs running_as) {
+ const char *e;
+ char *t;
+
+ assert(p);
+
+ /* First priority is whatever has been passed to us via env
+ * vars */
+ if ((e = getenv("SYSTEMD_UNIT_PATH")))
+ if (!(p->unit_path = split_path_and_make_absolute(e)))
+ return -ENOMEM;
+
+ if (strv_isempty(p->unit_path)) {
+
+ /* Nothing is set, so let's figure something out. */
+ strv_free(p->unit_path);
+
+ if (running_as == MANAGER_SESSION) {
+ if (!(p->unit_path = session_dirs()))
+ return -ENOMEM;
+ } else
+ if (!(p->unit_path = strv_new(
+ SYSTEM_CONFIG_UNIT_PATH, /* /etc/systemd/system/ */
+ SYSTEM_DATA_UNIT_PATH, /* /lib/systemd/system/ */
+ NULL)))
+ return -ENOMEM;
+ }
+
+ if (running_as == MANAGER_INIT) {
+ /* /etc/init.d/ compatibility does not matter to users */
+
+ if ((e = getenv("SYSTEMD_SYSVINIT_PATH")))
+ if (!(p->sysvinit_path = split_path_and_make_absolute(e)))
+ return -ENOMEM;
+
+ if (strv_isempty(p->sysvinit_path)) {
+ strv_free(p->sysvinit_path);
+
+ if (!(p->sysvinit_path = strv_new(
+ SYSTEM_SYSVINIT_PATH, /* /etc/init.d/ */
+ NULL)))
+ return -ENOMEM;
+ }
+
+ if ((e = getenv("SYSTEMD_SYSVRCND_PATH")))
+ if (!(p->sysvrcnd_path = split_path_and_make_absolute(e)))
+ return -ENOMEM;
+
+ if (strv_isempty(p->sysvrcnd_path)) {
+ strv_free(p->sysvrcnd_path);
+
+ if (!(p->sysvrcnd_path = strv_new(
+ SYSTEM_SYSVRCND_PATH, /* /etc/rcN.d/ */
+ NULL)))
+ return -ENOMEM;
+ }
+ }
+
+ if (p->unit_path)
+ if (!strv_path_canonicalize(p->unit_path))
+ return -ENOMEM;
+
+ if (p->sysvinit_path)
+ if (!strv_path_canonicalize(p->sysvinit_path))
+ return -ENOMEM;
+
+ if (p->sysvrcnd_path)
+ if (!strv_path_canonicalize(p->sysvrcnd_path))
+ return -ENOMEM;
+
+ strv_uniq(p->unit_path);
+ strv_uniq(p->sysvinit_path);
+ strv_uniq(p->sysvrcnd_path);
+
+ if (!strv_isempty(p->unit_path)) {
+
+ if (!(t = strv_join(p->unit_path, "\n\t")))
+ return -ENOMEM;
+ log_debug("Looking for unit files in:\n\t%s", t);
+ free(t);
+ } else {
+ log_debug("Ignoring unit files.");
+ strv_free(p->unit_path);
+ p->unit_path = NULL;
+ }
+
+ if (!strv_isempty(p->sysvinit_path)) {
+
+ if (!(t = strv_join(p->sysvinit_path, "\n\t")))
+ return -ENOMEM;
+
+ log_debug("Looking for SysV init scripts in:\n\t%s", t);
+ free(t);
+ } else {
+ log_debug("Ignoring SysV init scripts.");
+ strv_free(p->sysvinit_path);
+ p->sysvinit_path = NULL;
+ }
+
+ if (!strv_isempty(p->sysvrcnd_path)) {
+
+ if (!(t = strv_join(p->sysvrcnd_path, "\n\t")))
+ return -ENOMEM;
+
+ log_debug("Looking for SysV rcN.d links in:\n\t%s", t);
+ free(t);
+ } else {
+ log_debug("Ignoring SysV rcN.d links.");
+ strv_free(p->sysvrcnd_path);
+ p->sysvrcnd_path = NULL;
+ }
+
+ return 0;
+}
+
+void lookup_paths_free(LookupPaths *p) {
+ assert(p);
+
+ strv_free(p->unit_path);
+ strv_free(p->sysvinit_path);
+ strv_free(p->sysvrcnd_path);
+
+ p->unit_path = p->sysvinit_path = p->sysvrcnd_path = NULL;
+}
diff --git a/src/path-lookup.h b/src/path-lookup.h
new file mode 100644
index 0000000000..a04d5a0fab
--- /dev/null
+++ b/src/path-lookup.h
@@ -0,0 +1,36 @@
+/*-*- Mode: C; c-basic-offset: 8 -*-*/
+
+#ifndef foopathlookuphfoo
+#define foopathlookuphfoo
+
+/***
+ 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 LookupPaths {
+ char **unit_path;
+ char **sysvinit_path;
+ char **sysvrcnd_path;
+} LookupPaths;
+
+#include "manager.h"
+
+int lookup_paths_init(LookupPaths *p, ManagerRunningAs running_as);
+void lookup_paths_free(LookupPaths *p);
+
+#endif
diff --git a/src/service.c b/src/service.c
index e1975eb119..82a18a4311 100644
--- a/src/service.c
+++ b/src/service.c
@@ -675,7 +675,7 @@ static int service_load_sysv_name(Service *s, const char *name) {
endswith(name, ".sh.service"))
return -ENOENT;
- STRV_FOREACH(p, UNIT(s)->meta.manager->sysvinit_path) {
+ STRV_FOREACH(p, UNIT(s)->meta.manager->lookup_paths.sysvinit_path) {
char *path;
int r;
@@ -726,7 +726,7 @@ static int service_load_sysv(Service *s) {
/* Load service data from SysV init scripts, preferably with
* LSB headers ... */
- if (strv_isempty(UNIT(s)->meta.manager->sysvinit_path))
+ if (strv_isempty(UNIT(s)->meta.manager->lookup_paths.sysvinit_path))
return 0;
if ((t = UNIT(s)->meta.id))
@@ -2201,7 +2201,7 @@ static int service_enumerate(Manager *m) {
assert(m);
- STRV_FOREACH(p, m->sysvrcnd_path)
+ STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
struct dirent *de;