sv: update to match version 2.1.2 of runit
Backport from upstream versions:
2.1.2
Sun, 10 Aug 2014 18:01:54 +0000
* sv.c: properly format status command's output on failure cases.
* sv.c: support optional LSB init script actions reload and
try-restart.
* sv.c: fix typo that may lead to wrong output from sv when reporting
status of multiple service directories.
2.1.1
Sun, 04 Oct 2009 20:28:38 +0000
* sv.c: on 'down', send runsv the 'down' command properly if not yet
done (e.g. when taken up with 'once').
[Remove previous workaround added to BusyBox version].
1.9.0
Mon, 05 May 2008 22:00:13 +0000
* sv.c: service name is also relative to the current directory if it
ends with a slash.
1.8.0
Fri, 21 Sep 2007 00:33:56 +0000
* sv.c: fix race on check for down if pid is 0 and state is run or
finish.
1.7.1
Sat, 04 Nov 2006 19:23:29 +0000
* sv.c: properly wait for a service to be restarted on 'restart';
support checks through -v for pause, cont, kill.
function old new delta
sv 1184 1280 +96
control 132 180 +48
status 118 139 +21
out 64 85 +21
svstatus_print 334 344 +10
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/0 up/down: 196/0) Total: 196 bytes
Signed-off-by: James Byrne <james.byrne at origamienergy.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
James Byrne
Denys Vlasenko
parent
bcb5764822
commit
0c63299b84
163
runit/sv.c
163
runit/sv.c
@ -25,7 +25,7 @@ OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
||||
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
/* Taken from http://smarden.sunsite.dk/runit/sv.8.html:
|
||||
/* Taken from http://smarden.org/runit/sv.8.html:
|
||||
|
||||
sv - control and manage services monitored by runsv
|
||||
|
||||
@ -36,17 +36,13 @@ The sv program reports the current status and controls the state of services
|
||||
monitored by the runsv(8) supervisor.
|
||||
|
||||
services consists of one or more arguments, each argument naming a directory
|
||||
service used by runsv(8). If service doesn't start with a dot or slash,
|
||||
it is searched in the default services directory /var/service/, otherwise
|
||||
relative to the current directory.
|
||||
service used by runsv(8). If service doesn't start with a dot or slash and
|
||||
doesn't end with a slash, it is searched in the default services directory
|
||||
/var/service/, otherwise relative to the current directory.
|
||||
|
||||
command is one of up, down, status, once, pause, cont, hup, alarm, interrupt,
|
||||
1, 2, term, kill, or exit, or start, stop, restart, shutdown, force-stop,
|
||||
force-reload, force-restart, force-shutdown.
|
||||
|
||||
The sv program can be sym-linked to /etc/init.d/ to provide an LSB init
|
||||
script interface. The service to be controlled then is specified by the
|
||||
base name of the "init script".
|
||||
1, 2, term, kill, or exit, or start, stop, reload, restart, shutdown,
|
||||
force-stop, force-reload, force-restart, force-shutdown, try-restart.
|
||||
|
||||
status
|
||||
Report the current status of the service, and the appendant log service
|
||||
@ -66,9 +62,9 @@ exit
|
||||
If the service is running, send it the TERM signal, and the CONT signal.
|
||||
Do not restart the service. If the service is down, and no log service
|
||||
exists, runsv(8) exits. If the service is down and a log service exists,
|
||||
send the TERM signal to the log service. If the log service is down,
|
||||
runsv(8) exits. This command is ignored if it is given to an appendant
|
||||
log service.
|
||||
runsv(8) closes the standard input of the log service and waits for it to
|
||||
terminate. If the log service is down, runsv(8) exits. This command is
|
||||
ignored if it is given to an appendant log service.
|
||||
|
||||
sv actually looks only at the first character of above commands.
|
||||
|
||||
@ -85,6 +81,8 @@ start
|
||||
stop
|
||||
Same as down, but wait up to 7 seconds for the service to become down.
|
||||
Then report the status or timeout.
|
||||
reload
|
||||
Same as hup, and additionally report the status afterwards.
|
||||
restart
|
||||
Send the commands term, cont, and up to the service, and wait up to
|
||||
7 seconds for the service to restart. Then report the status or timeout.
|
||||
@ -112,6 +110,9 @@ force-shutdown
|
||||
Same as exit, but wait up to 7 seconds for the runsv(8) process to
|
||||
terminate. Then report the status, and on timeout send the service
|
||||
the kill command.
|
||||
try-restart
|
||||
if the service is running, send it the term and cont commands, and wait up to
|
||||
7 seconds for the service to restart. Then report the status or timeout.
|
||||
|
||||
Additional Commands
|
||||
|
||||
@ -126,8 +127,8 @@ check
|
||||
Options
|
||||
|
||||
-v
|
||||
wait up to 7 seconds for the command to take effect.
|
||||
Then report the status or timeout.
|
||||
If the command is up, down, term, once, cont, or exit, then wait up to 7
|
||||
seconds for the command to take effect. Then report the status or timeout.
|
||||
-w sec
|
||||
Override the default timeout of 7 seconds with sec seconds. Implies -v.
|
||||
|
||||
@ -192,6 +193,7 @@ struct globals {
|
||||
/* "Bernstein" time format: unix + 0x400000000000000aULL */
|
||||
uint64_t tstart, tnow;
|
||||
svstatus_t svstatus;
|
||||
unsigned islog;
|
||||
} FIX_ALIASING;
|
||||
#define G (*(struct globals*)bb_common_bufsiz1)
|
||||
#define acts (G.acts )
|
||||
@ -200,6 +202,7 @@ struct globals {
|
||||
#define tstart (G.tstart )
|
||||
#define tnow (G.tnow )
|
||||
#define svstatus (G.svstatus )
|
||||
#define islog (G.islog )
|
||||
#define INIT_G() do { setup_common_bufsiz(); } while (0)
|
||||
|
||||
|
||||
@ -215,7 +218,7 @@ static void fatal_cannot(const char *m1)
|
||||
|
||||
static void out(const char *p, const char *m1)
|
||||
{
|
||||
printf("%s%s: %s", p, *service, m1);
|
||||
printf("%s%s%s: %s", p, *service, islog ? "/log" : "", m1);
|
||||
if (errno) {
|
||||
printf(": %s", strerror(errno));
|
||||
}
|
||||
@ -300,15 +303,14 @@ static unsigned svstatus_print(const char *m)
|
||||
}
|
||||
pid = SWAP_LE32(svstatus.pid_le32);
|
||||
timestamp = SWAP_BE64(svstatus.time_be64);
|
||||
if (pid) {
|
||||
switch (svstatus.run_or_finish) {
|
||||
switch (svstatus.run_or_finish) {
|
||||
case 0: printf("down: "); break;
|
||||
case 1: printf("run: "); break;
|
||||
case 2: printf("finish: "); break;
|
||||
}
|
||||
printf("%s: (pid %d) ", m, pid);
|
||||
} else {
|
||||
printf("down: %s: ", m);
|
||||
}
|
||||
printf("%s: ", m);
|
||||
if (svstatus.run_or_finish)
|
||||
printf("(pid %d) ", pid);
|
||||
diff = tnow - timestamp;
|
||||
printf("%us", (diff < 0 ? 0 : diff));
|
||||
if (pid) {
|
||||
@ -331,16 +333,21 @@ static int status(const char *unused UNUSED_PARAM)
|
||||
return 0;
|
||||
|
||||
r = svstatus_print(*service);
|
||||
islog = 1;
|
||||
if (chdir("log") == -1) {
|
||||
if (errno != ENOENT) {
|
||||
printf("; log: "WARN"can't change to log service directory: %s",
|
||||
strerror(errno));
|
||||
}
|
||||
} else if (svstatus_get()) {
|
||||
printf("; ");
|
||||
warn("can't change directory");
|
||||
} else
|
||||
bb_putchar('\n');
|
||||
} else {
|
||||
printf("; ");
|
||||
svstatus_print("log");
|
||||
if (svstatus_get()) {
|
||||
r = svstatus_print("log");
|
||||
bb_putchar('\n');
|
||||
}
|
||||
}
|
||||
bb_putchar('\n'); /* will also flush the output */
|
||||
islog = 0;
|
||||
return r;
|
||||
}
|
||||
|
||||
@ -379,35 +386,53 @@ static int check(const char *a)
|
||||
r = svstatus_get();
|
||||
if (r == -1)
|
||||
return -1;
|
||||
if (r == 0) {
|
||||
if (*a == 'x')
|
||||
return 1;
|
||||
return -1;
|
||||
}
|
||||
pid_le32 = svstatus.pid_le32;
|
||||
switch (*a) {
|
||||
case 'x':
|
||||
return 0;
|
||||
case 'u':
|
||||
if (!pid_le32 || svstatus.run_or_finish != 1) return 0;
|
||||
if (!checkscript()) return 0;
|
||||
break;
|
||||
case 'd':
|
||||
if (pid_le32) return 0;
|
||||
break;
|
||||
case 'c':
|
||||
if (pid_le32 && !checkscript()) return 0;
|
||||
break;
|
||||
case 't':
|
||||
if (!pid_le32 && svstatus.want == 'd') break;
|
||||
timestamp = SWAP_BE64(svstatus.time_be64);
|
||||
if ((tstart > timestamp) || !pid_le32 || svstatus.got_term || !checkscript())
|
||||
return 0;
|
||||
break;
|
||||
case 'o':
|
||||
timestamp = SWAP_BE64(svstatus.time_be64);
|
||||
if ((!pid_le32 && tstart > timestamp) || (pid_le32 && svstatus.want != 'd'))
|
||||
while (*a) {
|
||||
if (r == 0) {
|
||||
if (*a == 'x')
|
||||
return 1;
|
||||
return -1;
|
||||
}
|
||||
pid_le32 = svstatus.pid_le32;
|
||||
switch (*a) {
|
||||
case 'x':
|
||||
return 0;
|
||||
case 'u':
|
||||
if (!pid_le32 || svstatus.run_or_finish != 1)
|
||||
return 0;
|
||||
if (!checkscript())
|
||||
return 0;
|
||||
break;
|
||||
case 'd':
|
||||
if (pid_le32 || svstatus.run_or_finish != 0)
|
||||
return 0;
|
||||
break;
|
||||
case 'C':
|
||||
if (pid_le32 && !checkscript())
|
||||
return 0;
|
||||
break;
|
||||
case 't':
|
||||
case 'k':
|
||||
if (!pid_le32 && svstatus.want == 'd')
|
||||
break;
|
||||
timestamp = SWAP_BE64(svstatus.time_be64);
|
||||
if ((tstart > timestamp) || !pid_le32 || svstatus.got_term || !checkscript())
|
||||
return 0;
|
||||
break;
|
||||
case 'o':
|
||||
timestamp = SWAP_BE64(svstatus.time_be64);
|
||||
if ((!pid_le32 && tstart > timestamp) || (pid_le32 && svstatus.want != 'd'))
|
||||
return 0;
|
||||
break;
|
||||
case 'p':
|
||||
if (pid_le32 && !svstatus.paused)
|
||||
return 0;
|
||||
break;
|
||||
case 'c':
|
||||
if (pid_le32 && svstatus.paused)
|
||||
return 0;
|
||||
break;
|
||||
}
|
||||
++a;
|
||||
}
|
||||
printf(OK);
|
||||
svstatus_print(*service);
|
||||
@ -419,14 +444,10 @@ static int control(const char *a)
|
||||
{
|
||||
int fd, r, l;
|
||||
|
||||
/* Is it an optimization?
|
||||
It causes problems with "sv o SRV; ...; sv d SRV"
|
||||
('d' is not passed to SRV because its .want == 'd'):
|
||||
if (svstatus_get() <= 0)
|
||||
return -1;
|
||||
if (svstatus.want == *a)
|
||||
if (svstatus.want == *a && (*a != 'd' || svstatus.got_term == 1))
|
||||
return 0;
|
||||
*/
|
||||
fd = open("supervise/control", O_WRONLY|O_NDELAY);
|
||||
if (fd == -1) {
|
||||
if (errno != ENODEV)
|
||||
@ -516,17 +537,23 @@ static int sv(char **argv)
|
||||
acts = "tc";
|
||||
kll = 1;
|
||||
break;
|
||||
case 't':
|
||||
if (str_equal(action, "try-restart")) {
|
||||
acts = "tc";
|
||||
break;
|
||||
}
|
||||
case 'c':
|
||||
if (str_equal(action, "check")) {
|
||||
act = NULL;
|
||||
acts = "c";
|
||||
acts = "C";
|
||||
break;
|
||||
}
|
||||
case 'u': case 'd': case 'o': case 't': case 'p': case 'h':
|
||||
case 'u': case 'd': case 'o': case 'p': case 'h':
|
||||
case 'a': case 'i': case 'k': case 'q': case '1': case '2':
|
||||
action[1] = '\0';
|
||||
acts = action;
|
||||
if (!verbose) cbk = NULL;
|
||||
if (!verbose)
|
||||
cbk = NULL;
|
||||
break;
|
||||
case 's':
|
||||
if (str_equal(action, "shutdown")) {
|
||||
@ -550,6 +577,10 @@ static int sv(char **argv)
|
||||
acts = "tcu";
|
||||
break;
|
||||
}
|
||||
if (str_equal(action, "reload")) {
|
||||
acts = "h";
|
||||
break;
|
||||
}
|
||||
bb_show_usage();
|
||||
case 'f':
|
||||
if (str_equal(action, "force-reload")) {
|
||||
@ -578,7 +609,9 @@ static int sv(char **argv)
|
||||
|
||||
service = argv;
|
||||
while ((x = *service) != NULL) {
|
||||
if (x[0] != '/' && x[0] != '.') {
|
||||
if (x[0] != '/' && x[0] != '.'
|
||||
&& x[0] != '\0' && x[strlen(x) - 1] != '/'
|
||||
) {
|
||||
if (chdir(varservice) == -1)
|
||||
goto chdir_failed_0;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user