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authorDenys Vlasenko2018-03-30 20:02:33 +0200
committerDenys Vlasenko2018-03-30 20:02:33 +0200
commit0d79d7709dc490378b1c3e1c99ea565767118118 (patch)
treec0ac9b9b4f0fdc2bd2e0bf5990856b17dcbf69e5 /runit/sv.c
parentd892f7137f43373123ab6c63006b5ff9b3481664 (diff)
downloadbusybox-0d79d7709dc490378b1c3e1c99ea565767118118.zip
busybox-0d79d7709dc490378b1c3e1c99ea565767118118.tar.gz
svok: new applet (daemontools compat)
function old new delta svok_main - 127 +127 packed_usage 32705 32757 +52 applet_names 2756 2761 +5 applet_main 1588 1592 +4 bb_banner 46 47 +1 sv 1286 1284 -2 ------------------------------------------------------------------------------ (add/remove: 1/0 grow/shrink: 4/1 up/down: 189/-2) Total: 187 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'runit/sv.c')
-rw-r--r--runit/sv.c57
1 files changed, 52 insertions, 5 deletions
diff --git a/runit/sv.c b/runit/sv.c
index dc5dcce..86d1818 100644
--- a/runit/sv.c
+++ b/runit/sv.c
@@ -163,7 +163,7 @@ Exit Codes
//config:config SV_DEFAULT_SERVICE_DIR
//config: string "Default directory for services"
//config: default "/var/service"
-//config: depends on SV
+//config: depends on SV || SVC || SVOK
//config: help
//config: Default directory for services.
//config: Defaults to "/var/service"
@@ -173,13 +173,22 @@ Exit Codes
//config: default y
//config: help
//config: svc controls the state of services monitored by the runsv supervisor.
-//config: It is comaptible with daemontools command with the same name.
+//config: It is compatible with daemontools command with the same name.
+//config:
+//config:config SVOK
+//config: bool "svok"
+//config: default y
+//config: help
+//config: svok checks whether runsv supervisor is running.
+//config: It is compatible with daemontools command with the same name.
-//applet:IF_SV( APPLET_NOEXEC(sv, sv, BB_DIR_USR_BIN, BB_SUID_DROP, sv ))
-//applet:IF_SVC(APPLET_NOEXEC(svc, svc, BB_DIR_USR_BIN, BB_SUID_DROP, svc))
+//applet:IF_SV( APPLET_NOEXEC(sv, sv, BB_DIR_USR_BIN, BB_SUID_DROP, sv ))
+//applet:IF_SVC( APPLET_NOEXEC(svc, svc, BB_DIR_USR_BIN, BB_SUID_DROP, svc ))
+//applet:IF_SVOK(APPLET_NOEXEC(svok, svok, BB_DIR_USR_BIN, BB_SUID_DROP, svok))
//kbuild:lib-$(CONFIG_SV) += sv.o
//kbuild:lib-$(CONFIG_SVC) += sv.o
+//kbuild:lib-$(CONFIG_SVOK) += sv.o
#include <sys/file.h>
#include "libbb.h"
@@ -615,7 +624,7 @@ static int sv(char **argv)
service = argv;
while ((x = *service) != NULL) {
if (x[0] != '/' && x[0] != '.'
- && x[0] != '\0' && x[strlen(x) - 1] != '/'
+ && !last_char_is(x, '/')
) {
if (chdir(varservice) == -1)
goto chdir_failed_0;
@@ -742,3 +751,41 @@ int svc_main(int argc UNUSED_PARAM, char **argv)
return 0;
}
#endif
+
+//usage:#define svok_trivial_usage
+//usage: "SERVICE_DIR"
+//usage:#define svok_full_usage "\n\n"
+//usage: "Check whether runsv supervisor is running.\n"
+//usage: "Exit code is 0 if it does, 100 if it does not,\n"
+//usage: "111 (with error message) if SERVICE_DIR does not exist."
+#if ENABLE_SVOK
+int svok_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int svok_main(int argc UNUSED_PARAM, char **argv)
+{
+ const char *dir = argv[1];
+
+ if (!dir)
+ bb_show_usage();
+
+ xfunc_error_retval = 111;
+
+ /*
+ * daemontools has no concept of "default service dir", runit does.
+ * Let's act as runit.
+ */
+ if (dir[0] != '/' && dir[0] != '.'
+ && !last_char_is(dir, '/')
+ ) {
+ xchdir(CONFIG_SV_DEFAULT_SERVICE_DIR);
+ }
+
+ xchdir(dir);
+ if (open("supervise/ok", O_WRONLY) < 0) {
+ if (errno == ENOENT || errno == ENXIO)
+ return 100;
+ bb_perror_msg_and_die("can't open '%s'", "supervise/ok");
+ }
+
+ return 0;
+}
+#endif