On Sun, Sep 19, 2010 at 2:25 PM, Tom Gundersen <t...@jklm.no> wrote:
> This patch should allow SystemD to be a drop-in replacement for SysV
> init on Arch (modulo some minor bugs), as long as one uses a recent
> kernel and dbus from [testing].
Turns out I missed a bug. This version should also work in case there
is no DAEMONS array in /etc/rc.conf.
Cheers,
Tom
From d6956e52edc9759a8190727bea406513e8fb47ea Mon Sep 17 00:00:00 2001
From: Tom Gundersen <t...@jklm.no>
Date: Sat, 18 Sep 2010 23:45:00 +0100
Subject: [PATCH] service: start Arch daemons
Arch does not use proper SysV runlevels. Instead /etc/rc.conf contains
an array of daemons to load in a multi-user runlevel, and some
dependencies between them.
This patch enables this behaviour in SystemD (only when compiled with
Arch support), which allows SystemD to be a drop in replacement on Arch
(modulo some minor bugs).
---
src/service.c | 72 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 72 insertions(+), 0 deletions(-)
diff --git a/src/service.c b/src/service.c
index df0d400..383c569 100644
--- a/src/service.c
+++ b/src/service.c
@@ -231,6 +231,11 @@ static char *sysv_translate_name(const char *name) {
else if (endswith(name, ".sh"))
/* Drop Debian-style .sh suffix */
strcpy(stpcpy(r, name) - 3, ".service");
+#ifdef TARGET_ARCH
+ else if (startswith(name, "@"))
+ /* Drop Arch-style background prefix */
+ strcpy(stpcpy(r, name + 1), ".service");
+#endif
else
/* Normal init scripts */
strcpy(stpcpy(r, name), ".service");
@@ -2658,9 +2663,72 @@ static int service_enumerate(Manager *m) {
Unit *service;
Iterator j;
int r;
+#ifdef TARGET_ARCH
+ Unit *previous = NULL;
+ char *arch_daemons = NULL;
+ char **arch_daemons_split = NULL;
+#endif
assert(m);
+#ifdef TARGET_ARCH
+ if ((r = parse_env_file("/etc/rc.conf", NEWLINE,
+ "DAEMONS", &arch_daemons,
+ NULL)) < 0) {
+ if (r != -ENOENT)
+ log_warning("Failed to read /etc/rc.conf: %s", strerror(-r));
+ }
+ else if (arch_daemons) {
+ for (i=0; i < strlen(arch_daemons); i++) { /* strip of end paren */
+ if (arch_daemons[i] == ')') {
+ arch_daemons[i] = 0;
+ break;
+ }
+ }
+ for (i=0; i < strlen(arch_daemons); i++) { /* find position of start paren */
+ if (arch_daemons[i] == '(') {
+ i++;
+ break;
+ }
+ }
+ if (i == strlen(arch_daemons)) /* no start paren found */
+ i = 0;
+
+ if (!(arch_daemons_split = strv_split_quoted(arch_daemons + i))) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ STRV_FOREACH(p, arch_daemons_split) {
+
+ free(name);
+
+ if (**p == '!') /* daemons prefixed with ! are disabled, so ignore them */
+ continue;
+
+ if (!(name = sysv_translate_name(*p))) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
+ log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
+ continue;
+ }
+
+ if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, "multi-user.target", NULL, true)) < 0)
+ goto finish;
+
+ if (previous)
+ if ((r = unit_add_dependency(service, UNIT_AFTER, previous, true)) < 0)
+ goto finish;
+
+ if (**p != '@') /* daemons prefixed with @ can be started in the background */
+ previous = service;
+ }
+ }
+#endif
+
zero(runlevel_services);
STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
@@ -2798,6 +2866,10 @@ finish:
free(path);
free(fpath);
free(name);
+#ifdef TARGET_ARCH
+ free(arch_daemons);
+ free(arch_daemons_split);
+#endif
for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
set_free(runlevel_services[i]);
--
1.7.2.3
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