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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v4 1/4] tools: remove systemd xenstore socket definitions
On a system with systemd the xenstore sockets are created via systemd.
Remove the related configuration files in order to be able to decide
at runtime whether the sockets should be created or not. This will
enable Xen to start xenstore either via a daemon or via a stub domain.
As the xenstore domain start program will exit after it has done its
job prepare the same behaviour to be tolerated by systemd for the
xenstore daemon by specifying the appropriate flags in the service
file.
A rerun of autogen.sh is required.
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
V4: remove sd_booted() test, undo unintended white space changes
V3: re-add sd_notify() call
---
tools/configure | 4 +-
tools/configure.ac | 2 -
tools/hotplug/Linux/systemd/Makefile | 5 -
tools/hotplug/Linux/systemd/xenstored.service.in | 5 +-
tools/hotplug/Linux/systemd/xenstored.socket.in | 13 ---
tools/hotplug/Linux/systemd/xenstored_ro.socket.in | 13 ---
tools/ocaml/xenstored/systemd.ml | 2 -
tools/ocaml/xenstored/systemd.mli | 8 --
tools/ocaml/xenstored/systemd_stubs.c | 98 --------------------
tools/ocaml/xenstored/utils.ml | 9 +-
tools/ocaml/xenstored/xenstored.ml | 3 +-
tools/xenstore/xenstored_core.c | 103 +--------------------
12 files changed, 10 insertions(+), 255 deletions(-)
delete mode 100644 tools/hotplug/Linux/systemd/xenstored.socket.in
delete mode 100644 tools/hotplug/Linux/systemd/xenstored_ro.socket.in
diff --git a/tools/configure b/tools/configure
index 5b5dcce..1c84c6c 100755
--- a/tools/configure
+++ b/tools/configure
@@ -9670,7 +9670,7 @@ fi
if test "x$systemd" = "xy"; then :
- ac_config_files="$ac_config_files hotplug/Linux/systemd/proc-xen.mount
hotplug/Linux/systemd/var-lib-xenstored.mount
hotplug/Linux/systemd/xen-init-dom0.service
hotplug/Linux/systemd/xen-qemu-dom0-disk-backend.service
hotplug/Linux/systemd/xen-watchdog.service
hotplug/Linux/systemd/xenconsoled.service
hotplug/Linux/systemd/xendomains.service
hotplug/Linux/systemd/xendriverdomain.service
hotplug/Linux/systemd/xenstored.service hotplug/Linux/systemd/xenstored.socket
hotplug/Linux/systemd/xenstored_ro.socket"
+ ac_config_files="$ac_config_files hotplug/Linux/systemd/proc-xen.mount
hotplug/Linux/systemd/var-lib-xenstored.mount
hotplug/Linux/systemd/xen-init-dom0.service
hotplug/Linux/systemd/xen-qemu-dom0-disk-backend.service
hotplug/Linux/systemd/xen-watchdog.service
hotplug/Linux/systemd/xenconsoled.service
hotplug/Linux/systemd/xendomains.service
hotplug/Linux/systemd/xendriverdomain.service
hotplug/Linux/systemd/xenstored.service"
fi
@@ -10394,8 +10394,6 @@ do
"hotplug/Linux/systemd/xendomains.service") CONFIG_FILES="$CONFIG_FILES
hotplug/Linux/systemd/xendomains.service" ;;
"hotplug/Linux/systemd/xendriverdomain.service")
CONFIG_FILES="$CONFIG_FILES hotplug/Linux/systemd/xendriverdomain.service" ;;
"hotplug/Linux/systemd/xenstored.service") CONFIG_FILES="$CONFIG_FILES
hotplug/Linux/systemd/xenstored.service" ;;
- "hotplug/Linux/systemd/xenstored.socket") CONFIG_FILES="$CONFIG_FILES
hotplug/Linux/systemd/xenstored.socket" ;;
- "hotplug/Linux/systemd/xenstored_ro.socket") CONFIG_FILES="$CONFIG_FILES
hotplug/Linux/systemd/xenstored_ro.socket" ;;
*) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
esac
diff --git a/tools/configure.ac b/tools/configure.ac
index 87e14a8..f991ab3 100644
--- a/tools/configure.ac
+++ b/tools/configure.ac
@@ -438,8 +438,6 @@ AS_IF([test "x$systemd" = "xy"], [
hotplug/Linux/systemd/xendomains.service
hotplug/Linux/systemd/xendriverdomain.service
hotplug/Linux/systemd/xenstored.service
- hotplug/Linux/systemd/xenstored.socket
- hotplug/Linux/systemd/xenstored_ro.socket
])
])
diff --git a/tools/hotplug/Linux/systemd/Makefile
b/tools/hotplug/Linux/systemd/Makefile
index 558e459..7d24bbe 100644
--- a/tools/hotplug/Linux/systemd/Makefile
+++ b/tools/hotplug/Linux/systemd/Makefile
@@ -6,9 +6,6 @@ XEN_SYSTEMD_MODULES = xen.conf
XEN_SYSTEMD_MOUNT = proc-xen.mount
XEN_SYSTEMD_MOUNT += var-lib-xenstored.mount
-XEN_SYSTEMD_SOCKET = xenstored.socket
-XEN_SYSTEMD_SOCKET += xenstored_ro.socket
-
XEN_SYSTEMD_SERVICE = xenstored.service
XEN_SYSTEMD_SERVICE += xenconsoled.service
XEN_SYSTEMD_SERVICE += xen-qemu-dom0-disk-backend.service
@@ -19,7 +16,6 @@ XEN_SYSTEMD_SERVICE += xendriverdomain.service
ALL_XEN_SYSTEMD = $(XEN_SYSTEMD_MODULES) \
$(XEN_SYSTEMD_MOUNT) \
- $(XEN_SYSTEMD_SOCKET) \
$(XEN_SYSTEMD_SERVICE)
.PHONY: all
@@ -38,7 +34,6 @@ install: $(ALL_XEN_SYSTEMD)
$(INSTALL_DIR) $(DESTDIR)$(XEN_SYSTEMD_DIR)
[ -d $(DESTDIR)$(XEN_SYSTEMD_MODULES_LOAD) ] || \
$(INSTALL_DIR) $(DESTDIR)$(XEN_SYSTEMD_MODULES_LOAD)
- $(INSTALL_DATA) *.socket $(DESTDIR)$(XEN_SYSTEMD_DIR)
$(INSTALL_DATA) *.service $(DESTDIR)$(XEN_SYSTEMD_DIR)
$(INSTALL_DATA) *.mount $(DESTDIR)$(XEN_SYSTEMD_DIR)
$(INSTALL_DATA) *.conf $(DESTDIR)$(XEN_SYSTEMD_MODULES_LOAD)
diff --git a/tools/hotplug/Linux/systemd/xenstored.service.in
b/tools/hotplug/Linux/systemd/xenstored.service.in
index a5f836b..d520d70 100644
--- a/tools/hotplug/Linux/systemd/xenstored.service.in
+++ b/tools/hotplug/Linux/systemd/xenstored.service.in
@@ -1,6 +1,6 @@
[Unit]
Description=The Xen xenstore
-Requires=xenstored_ro.socket xenstored.socket proc-xen.mount
var-lib-xenstored.mount
+Requires=proc-xen.mount var-lib-xenstored.mount
After=proc-xen.mount var-lib-xenstored.mount
Before=libvirtd.service libvirt-guests.service
RefuseManualStop=true
@@ -8,6 +8,8 @@ ConditionPathExists=/proc/xen/capabilities
[Service]
Type=notify
+NotifyAccess=all
+RemainAfterExit=true
KillMode=none
Environment=XENSTORED_ARGS=
Environment=XENSTORED=@XENSTORED@
@@ -19,6 +21,5 @@ ExecStart=/bin/sh -c "exec $XENSTORED --no-fork
$XENSTORED_ARGS"
[Install]
WantedBy=multi-user.target
-Also=xenstored_ro.socket xenstored.socket
Also=proc-xen.mount
Also=var-lib-xenstored.mount
diff --git a/tools/hotplug/Linux/systemd/xenstored.socket.in
b/tools/hotplug/Linux/systemd/xenstored.socket.in
deleted file mode 100644
index 375c4b7..0000000
--- a/tools/hotplug/Linux/systemd/xenstored.socket.in
+++ /dev/null
@@ -1,13 +0,0 @@
-[Unit]
-Description=xenstore socket
-Requires=proc-xen.mount var-lib-xenstored.mount
-After=proc-xen.mount var-lib-xenstored.mount
-ConditionPathExists=/proc/xen/capabilities
-
-[Socket]
-ListenStream=@XEN_RUN_STORED@/socket
-SocketMode=0600
-Service=xenstored.service
-
-[Install]
-WantedBy=sockets.target
diff --git a/tools/hotplug/Linux/systemd/xenstored_ro.socket.in
b/tools/hotplug/Linux/systemd/xenstored_ro.socket.in
deleted file mode 100644
index 82fe377..0000000
--- a/tools/hotplug/Linux/systemd/xenstored_ro.socket.in
+++ /dev/null
@@ -1,13 +0,0 @@
-[Unit]
-Description=xenstore ro socket
-Requires=proc-xen.mount var-lib-xenstored.mount
-After=proc-xen.mount var-lib-xenstored.mount
-ConditionPathExists=/proc/xen/capabilities
-
-[Socket]
-ListenStream=@XEN_RUN_STORED@/socket_ro
-SocketMode=0660
-Service=xenstored.service
-
-[Install]
-WantedBy=sockets.target
diff --git a/tools/ocaml/xenstored/systemd.ml b/tools/ocaml/xenstored/systemd.ml
index 732446d..39127f7 100644
--- a/tools/ocaml/xenstored/systemd.ml
+++ b/tools/ocaml/xenstored/systemd.ml
@@ -12,6 +12,4 @@
* GNU Lesser General Public License for more details.
*)
-external sd_listen_fds: string -> Unix.file_descr = "ocaml_sd_listen_fds"
-external launched_by_systemd: unit -> bool = "ocaml_launched_by_systemd"
external sd_notify_ready: unit -> unit = "ocaml_sd_notify_ready"
diff --git a/tools/ocaml/xenstored/systemd.mli
b/tools/ocaml/xenstored/systemd.mli
index 538fc5e..18b9331 100644
--- a/tools/ocaml/xenstored/systemd.mli
+++ b/tools/ocaml/xenstored/systemd.mli
@@ -12,13 +12,5 @@
* GNU Lesser General Public License for more details.
*)
-(** Calls the C library sd_listen_fds() function for us. Although
- * the library doesn't accept argument we send one over to help
- * us do sanity checks on the expected sockets *)
-val sd_listen_fds: string -> Unix.file_descr
-
-(** Tells us whether the process is launched by systemd *)
-val launched_by_systemd: unit -> bool
-
(** Tells systemd we're ready *)
external sd_notify_ready: unit -> unit = "ocaml_sd_notify_ready"
diff --git a/tools/ocaml/xenstored/systemd_stubs.c
b/tools/ocaml/xenstored/systemd_stubs.c
index 322f1e0..490156c 100644
--- a/tools/ocaml/xenstored/systemd_stubs.c
+++ b/tools/ocaml/xenstored/systemd_stubs.c
@@ -25,88 +25,10 @@
#if defined(HAVE_SYSTEMD)
-#include <sys/socket.h>
#include <systemd/sd-daemon.h>
#include "_paths.h"
-/* Will work regardless of the order systemd gives them to us */
-static int oxen_get_sd_fd(const char *connect_to)
-{
- int fd = SD_LISTEN_FDS_START;
- int r;
-
- while (fd <= SD_LISTEN_FDS_START + 1) {
- r = sd_is_socket_unix(fd, SOCK_STREAM, 1, connect_to, 0);
- if (r > 0)
- return fd;
- fd++;
- }
-
- return -EBADR;
-}
-
-static int oxen_verify_socket_socket(const char *connect_to)
-{
- if ((strcmp(XEN_RUN_STORED "/socket_ro", connect_to) != 0) &&
- (strcmp(XEN_RUN_STORED "/socket", connect_to) != 0)) {
- sd_notifyf(0, "STATUS=unexpected socket: %s\n"
- "ERRNO=%i",
- connect_to,
- EBADR);
- return -EBADR;
- }
-
- return oxen_get_sd_fd(connect_to);
-}
-
-CAMLprim value ocaml_sd_listen_fds(value connect_to)
-{
- CAMLparam1(connect_to);
- CAMLlocal1(sock_ret);
- int sock = -EBADR, n;
-
- n = sd_listen_fds(0);
- if (n <= 0) {
- sd_notifyf(0, "STATUS=Failed to get any active sockets: %s\n"
- "ERRNO=%i",
- strerror(errno),
- errno);
- caml_failwith("ocaml_sd_listen_fds() failed to get any
sockets");
- } else if (n != 2) {
- fprintf(stderr, SD_ERR "Expected 2 fds but given %d\n", n);
- sd_notifyf(0, "STATUS=Mismatch on number (2): %s\n"
- "ERRNO=%d",
- strerror(EBADR),
- EBADR);
- caml_failwith("ocaml_sd_listen_fds() mismatch");
- }
-
- sock = oxen_verify_socket_socket(String_val(connect_to));
- if (sock <= 0) {
- fprintf(stderr, "failed to verify sock %s\n",
- String_val(connect_to));
- caml_failwith("ocaml_sd_listen_fds_init() invalid socket");
- }
-
- sock_ret = Val_int(sock);
-
- CAMLreturn(sock_ret);
-}
-
-CAMLprim value ocaml_launched_by_systemd(value ignore)
-{
- CAMLparam1(ignore);
- CAMLlocal1(ret);
-
- ret = Val_false;
-
- if (sd_listen_fds(0) > 0)
- ret = Val_true;
-
- CAMLreturn(ret);
-}
-
CAMLprim value ocaml_sd_notify_ready(value ignore)
{
CAMLparam1(ignore);
@@ -121,26 +43,6 @@ CAMLprim value ocaml_sd_notify_ready(value ignore)
#else
-CAMLprim value ocaml_sd_listen_fds(value connect_to)
-{
- CAMLparam1(connect_to);
- CAMLlocal1(sock_ret);
-
- sock_ret = Val_int(-1U);
-
- CAMLreturn(sock_ret);
-}
-
-CAMLprim value ocaml_launched_by_systemd(value ignore)
-{
- CAMLparam1(ignore);
- CAMLlocal1(ret);
-
- ret = Val_false;
-
- CAMLreturn(ret);
-}
-
CAMLprim value ocaml_sd_notify_ready(value ignore)
{
CAMLparam1(ignore);
diff --git a/tools/ocaml/xenstored/utils.ml b/tools/ocaml/xenstored/utils.ml
index 9f82c1c..e89c1af 100644
--- a/tools/ocaml/xenstored/utils.ml
+++ b/tools/ocaml/xenstored/utils.ml
@@ -73,22 +73,15 @@ let trim_path path =
let join_by_null ls = String.concat "\000" ls
(* unix utils *)
-let create_regular_unix_socket name =
+let create_unix_socket name =
Unixext.unlink_safe name;
Unixext.mkdir_rec (Filename.dirname name) 0o700;
let sockaddr = Unix.ADDR_UNIX(name) in
let sock = Unix.socket Unix.PF_UNIX Unix.SOCK_STREAM 0 in
- Unix.set_close_on_exec sock;
Unix.bind sock sockaddr;
Unix.listen sock 1;
sock
-let create_unix_socket name =
- if Systemd.launched_by_systemd() then
- Systemd.sd_listen_fds name
- else
- create_regular_unix_socket name
-
let read_file_single_integer filename =
let fd = Unix.openfile filename [ Unix.O_RDONLY ] 0o640 in
let buf = String.make 20 (char_of_int 0) in
diff --git a/tools/ocaml/xenstored/xenstored.ml
b/tools/ocaml/xenstored/xenstored.ml
index 7ea4026..2efcce6 100644
--- a/tools/ocaml/xenstored/xenstored.ml
+++ b/tools/ocaml/xenstored/xenstored.ml
@@ -428,8 +428,7 @@ let _ =
process_domains store cons domains
in
- if Systemd.launched_by_systemd () then
- Systemd.sd_notify_ready ();
+ Systemd.sd_notify_ready ();
while not !quit
do
try
diff --git a/tools/xenstore/xenstored_core.c b/tools/xenstore/xenstored_core.c
index 693d47d..3df977b 100644
--- a/tools/xenstore/xenstored_core.c
+++ b/tools/xenstore/xenstored_core.c
@@ -1788,84 +1788,6 @@ static int destroy_fd(void *_fd)
return 0;
}
-#if defined(XEN_SYSTEMD_ENABLED)
-/* Will work regardless of the order systemd gives them to us */
-static int xs_get_sd_fd(const char *connect_to)
-{
- int fd = SD_LISTEN_FDS_START;
- int r;
-
- while (fd <= SD_LISTEN_FDS_START + 1) {
- r = sd_is_socket_unix(fd, SOCK_STREAM, 1, connect_to, 0);
- if (r > 0)
- return fd;
- fd++;
- }
-
- return -EBADR;
-}
-
-static int xs_validate_active_socket(const char *connect_to)
-{
- if ((strcmp(xs_daemon_socket_ro(), connect_to) != 0) &&
- (strcmp(xs_daemon_socket(), connect_to) != 0)) {
- sd_notifyf(0, "STATUS=unexpected socket: %s\n"
- "ERRNO=%i",
- connect_to,
- EBADR);
- return -EBADR;
- }
-
- return xs_get_sd_fd(connect_to);
-}
-
-/* Return true if started by systemd and false if not. Exit with
- * error if things go wrong.
- */
-static bool systemd_checkin(int **psock, int **pro_sock)
-{
- int *sock, *ro_sock;
- const char *soc_str = xs_daemon_socket();
- const char *soc_str_ro = xs_daemon_socket_ro();
- int n;
-
- n = sd_listen_fds(0);
-
- if (n == 0)
- return false;
-
- if (n < 0) {
- sd_notifyf(0, "STATUS=Failed to get any active sockets: %s\n"
- "ERRNO=%i",
- strerror(errno),
- errno);
- barf_perror("sd_listen_fds() failed\n");
- } else if (n != 2) {
- fprintf(stderr, SD_ERR "Expected 2 fds but given %d\n", n);
- sd_notifyf(0, "STATUS=Mismatch on number (2): %s\n"
- "ERRNO=%d",
- strerror(EBADR),
- EBADR);
- barf_perror("sd_listen_fds() gave too many fds\n");
- }
-
- *psock = sock = talloc(talloc_autofree_context(), int);
- *sock = xs_validate_active_socket(soc_str);
- if (*sock <= 0)
- barf_perror("%s", soc_str);
-
- *pro_sock = ro_sock = talloc(talloc_autofree_context(), int);
- *ro_sock = xs_validate_active_socket(soc_str_ro);
- if (*ro_sock <= 0)
- barf_perror("%s", soc_str_ro);
-
- talloc_set_destructor(sock, destroy_fd);
- talloc_set_destructor(ro_sock, destroy_fd);
-
- return true;
-}
-#endif
-
static void init_sockets(int **psock, int **pro_sock)
{
struct sockaddr_un addr;
@@ -1984,9 +1906,7 @@ int main(int argc, char *argv[])
const char *pidfile = NULL;
const char *memfile = NULL;
int timeout;
-#if defined(XEN_SYSTEMD_ENABLED)
- bool systemd;
-#endif
+
while ((opt = getopt_long(argc, argv, "DE:F:HNPS:t:T:RLVW:M:", options,
NULL)) != -1) {
@@ -2050,16 +1970,6 @@ int main(int argc, char *argv[])
if (optind != argc)
barf("%s: No arguments desired", argv[0]);
-#if defined(XEN_SYSTEMD_ENABLED)
- systemd = systemd_checkin(&sock, &ro_sock);
- if (systemd) {
- dofork = false;
- if (pidfile)
- xprintf("%s: PID file not needed on systemd", argv[0]);
- pidfile = NULL;
- }
-#endif
-
reopen_log();
/* make sure xenstored directories exist */
@@ -2086,10 +1996,7 @@ int main(int argc, char *argv[])
signal(SIGUSR1, do_talloc_report);
}
-#if defined(XEN_SYSTEMD_ENABLED)
- if (!systemd)
-#endif
- init_sockets(&sock, &ro_sock);
+ init_sockets(&sock, &ro_sock);
init_pipe(reopen_log_pipe);
@@ -2122,10 +2029,8 @@ int main(int argc, char *argv[])
xenbus_notify_running();
#if defined(XEN_SYSTEMD_ENABLED)
- if (systemd) {
- sd_notify(1, "READY=1");
- fprintf(stderr, SD_NOTICE "xenstored is ready\n");
- }
+ sd_notify(1, "READY=1");
+ fprintf(stderr, SD_NOTICE "xenstored is ready\n");
#endif
/* Main loop. */
--
2.6.6
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