5 files changed, 65 insertions, 4 deletions
diff --git a/package/deps.mak b/package/deps.mak
index baee614..74c853d 100644
--- a/package/deps.mak
+++ b/package/deps.mak
@@ -11,6 +11,8 @@ src/libs6rc/s6rc_db_read.o src/libs6rc/s6rc_db_read.lo: src/libs6rc/s6rc_db_read
 src/libs6rc/s6rc_db_read_sizes.o src/libs6rc/s6rc_db_read_sizes.lo: src/libs6rc/s6rc_db_read_sizes.c src/include/s6-rc/s6rc-db.h
 src/libs6rc/s6rc_db_read_uint32.o src/libs6rc/s6rc_db_read_uint32.lo: src/libs6rc/s6rc_db_read_uint32.c src/include/s6-rc/s6rc-db.h
 src/libs6rc/s6rc_graph_closure.o src/libs6rc/s6rc_graph_closure.lo: src/libs6rc/s6rc_graph_closure.c src/include/s6-rc/s6rc-db.h src/include/s6-rc/s6rc-utils.h
+src/libs6rc/s6rc_live_state_read.o src/libs6rc/s6rc_live_state_read.lo: src/libs6rc/s6rc_live_state_read.c src/include/s6-rc/s6rc-db.h src/include/s6-rc/s6rc-utils.h
+src/libs6rc/s6rc_live_state_size.o src/libs6rc/s6rc_live_state_size.lo: src/libs6rc/s6rc_live_state_size.c src/include/s6-rc/s6rc-db.h src/include/s6-rc/s6rc-utils.h
 src/libs6rc/s6rc_livedir_canon.o src/libs6rc/s6rc_livedir_canon.lo: src/libs6rc/s6rc_livedir_canon.c src/include/s6-rc/s6rc-utils.h
 src/libs6rc/s6rc_livedir_create.o src/libs6rc/s6rc_livedir_create.lo: src/libs6rc/s6rc_livedir_create.c src/include/s6-rc/s6rc-utils.h
 src/libs6rc/s6rc_livedir_prefix.o src/libs6rc/s6rc_livedir_prefix.lo: src/libs6rc/s6rc_livedir_prefix.c src/include/s6-rc/s6rc-utils.h
@@ -37,15 +39,15 @@ src/s6-rc/s6-rc-update.o src/s6-rc/s6-rc-update.lo: src/s6-rc/s6-rc-update.c src
 src/s6-rc/s6-rc.o src/s6-rc/s6-rc.lo: src/s6-rc/s6-rc.c src/include/s6-rc/config.h src/include/s6-rc/s6rc.h
 
 ifeq ($(strip $(STATIC_LIBS_ARE_PIC)),)
-libs6rc.a.xyzzy: src/libs6rc/s6rc_db_check_depcycles.o src/libs6rc/s6rc_db_check_pipelines.o src/libs6rc/s6rc_db_check_revdeps.o src/libs6rc/s6rc_db_read.o src/libs6rc/s6rc_db_read_sizes.o src/libs6rc/s6rc_db_read_uint32.o src/libs6rc/s6rc_graph_closure.o src/libs6rc/s6rc_livedir_canon.o src/libs6rc/s6rc_livedir_create.o src/libs6rc/s6rc_livedir_prefix.o src/libs6rc/s6rc_livedir_prefixsize.o src/libs6rc/s6rc_lock.o src/libs6rc/s6rc_read_uint.o src/libs6rc/s6rc_sanitize_dir.o src/libs6rc/s6rc_servicedir_internal.o src/libs6rc/s6rc_servicedir_block.o src/libs6rc/s6rc_servicedir_unblock.o src/libs6rc/s6rc_servicedir_copy_offline.o src/libs6rc/s6rc_servicedir_copy_online.o src/libs6rc/s6rc_servicedir_manage.o src/libs6rc/s6rc_servicedir_unsupervise.o
+libs6rc.a.xyzzy: src/libs6rc/s6rc_db_check_depcycles.o src/libs6rc/s6rc_db_check_pipelines.o src/libs6rc/s6rc_db_check_revdeps.o src/libs6rc/s6rc_db_read.o src/libs6rc/s6rc_db_read_sizes.o src/libs6rc/s6rc_db_read_uint32.o src/libs6rc/s6rc_graph_closure.o src/libs6rc/s6rc_live_state_size.o src/libs6rc/s6rc_live_state_read.o src/libs6rc/s6rc_livedir_canon.o src/libs6rc/s6rc_livedir_create.o src/libs6rc/s6rc_livedir_prefix.o src/libs6rc/s6rc_livedir_prefixsize.o src/libs6rc/s6rc_lock.o src/libs6rc/s6rc_read_uint.o src/libs6rc/s6rc_sanitize_dir.o src/libs6rc/s6rc_servicedir_internal.o src/libs6rc/s6rc_servicedir_block.o src/libs6rc/s6rc_servicedir_unblock.o src/libs6rc/s6rc_servicedir_copy_offline.o src/libs6rc/s6rc_servicedir_copy_online.o src/libs6rc/s6rc_servicedir_manage.o src/libs6rc/s6rc_servicedir_unsupervise.o
 else
-libs6rc.a.xyzzy:src/libs6rc/s6rc_db_check_depcycles.lo src/libs6rc/s6rc_db_check_pipelines.lo src/libs6rc/s6rc_db_check_revdeps.lo src/libs6rc/s6rc_db_read.lo src/libs6rc/s6rc_db_read_sizes.lo src/libs6rc/s6rc_db_read_uint32.lo src/libs6rc/s6rc_graph_closure.lo src/libs6rc/s6rc_livedir_canon.lo src/libs6rc/s6rc_livedir_create.lo src/libs6rc/s6rc_livedir_prefix.lo src/libs6rc/s6rc_livedir_prefixsize.lo src/libs6rc/s6rc_lock.lo src/libs6rc/s6rc_read_uint.lo src/libs6rc/s6rc_sanitize_dir.lo src/libs6rc/s6rc_servicedir_internal.lo src/libs6rc/s6rc_servicedir_block.lo src/libs6rc/s6rc_servicedir_unblock.lo src/libs6rc/s6rc_servicedir_copy_offline.lo src/libs6rc/s6rc_servicedir_copy_online.lo src/libs6rc/s6rc_servicedir_manage.lo src/libs6rc/s6rc_servicedir_unsupervise.lo
+libs6rc.a.xyzzy:src/libs6rc/s6rc_db_check_depcycles.lo src/libs6rc/s6rc_db_check_pipelines.lo src/libs6rc/s6rc_db_check_revdeps.lo src/libs6rc/s6rc_db_read.lo src/libs6rc/s6rc_db_read_sizes.lo src/libs6rc/s6rc_db_read_uint32.lo src/libs6rc/s6rc_graph_closure.lo src/libs6rc/s6rc_live_state_size.lo src/libs6rc/s6rc_live_state_read.lo src/libs6rc/s6rc_livedir_canon.lo src/libs6rc/s6rc_livedir_create.lo src/libs6rc/s6rc_livedir_prefix.lo src/libs6rc/s6rc_livedir_prefixsize.lo src/libs6rc/s6rc_lock.lo src/libs6rc/s6rc_read_uint.lo src/libs6rc/s6rc_sanitize_dir.lo src/libs6rc/s6rc_servicedir_internal.lo src/libs6rc/s6rc_servicedir_block.lo src/libs6rc/s6rc_servicedir_unblock.lo src/libs6rc/s6rc_servicedir_copy_offline.lo src/libs6rc/s6rc_servicedir_copy_online.lo src/libs6rc/s6rc_servicedir_manage.lo src/libs6rc/s6rc_servicedir_unsupervise.lo
 endif
 libs6rc.pc: EXTRA_LIBS := -ls6 -lskarnet
 libs6rc.so.xyzzy: EXTRA_LIBS := -ls6 -lskarnet
-libs6rc.so.xyzzy:src/libs6rc/s6rc_db_check_depcycles.lo src/libs6rc/s6rc_db_check_pipelines.lo src/libs6rc/s6rc_db_check_revdeps.lo src/libs6rc/s6rc_db_read.lo src/libs6rc/s6rc_db_read_sizes.lo src/libs6rc/s6rc_db_read_uint32.lo src/libs6rc/s6rc_graph_closure.lo src/libs6rc/s6rc_livedir_canon.lo src/libs6rc/s6rc_livedir_create.lo src/libs6rc/s6rc_livedir_prefix.lo src/libs6rc/s6rc_livedir_prefixsize.lo src/libs6rc/s6rc_lock.lo src/libs6rc/s6rc_read_uint.lo src/libs6rc/s6rc_sanitize_dir.lo src/libs6rc/s6rc_servicedir_internal.lo src/libs6rc/s6rc_servicedir_block.lo src/libs6rc/s6rc_servicedir_unblock.lo src/libs6rc/s6rc_servicedir_copy_offline.lo src/libs6rc/s6rc_servicedir_copy_online.lo src/libs6rc/s6rc_servicedir_manage.lo src/libs6rc/s6rc_servicedir_unsupervise.lo
+libs6rc.so.xyzzy:src/libs6rc/s6rc_db_check_depcycles.lo src/libs6rc/s6rc_db_check_pipelines.lo src/libs6rc/s6rc_db_check_revdeps.lo src/libs6rc/s6rc_db_read.lo src/libs6rc/s6rc_db_read_sizes.lo src/libs6rc/s6rc_db_read_uint32.lo src/libs6rc/s6rc_graph_closure.lo src/libs6rc/s6rc_live_state_size.lo src/libs6rc/s6rc_live_state_read.lo src/libs6rc/s6rc_livedir_canon.lo src/libs6rc/s6rc_livedir_create.lo src/libs6rc/s6rc_livedir_prefix.lo src/libs6rc/s6rc_livedir_prefixsize.lo src/libs6rc/s6rc_lock.lo src/libs6rc/s6rc_read_uint.lo src/libs6rc/s6rc_sanitize_dir.lo src/libs6rc/s6rc_servicedir_internal.lo src/libs6rc/s6rc_servicedir_block.lo src/libs6rc/s6rc_servicedir_unblock.lo src/libs6rc/s6rc_servicedir_copy_offline.lo src/libs6rc/s6rc_servicedir_copy_online.lo src/libs6rc/s6rc_servicedir_manage.lo src/libs6rc/s6rc_servicedir_unsupervise.lo
 libs6rc.dylib.xyzzy: EXTRA_LIBS := -ls6 -lskarnet
-libs6rc.dylib.xyzzy:src/libs6rc/s6rc_db_check_depcycles.lo src/libs6rc/s6rc_db_check_pipelines.lo src/libs6rc/s6rc_db_check_revdeps.lo src/libs6rc/s6rc_db_read.lo src/libs6rc/s6rc_db_read_sizes.lo src/libs6rc/s6rc_db_read_uint32.lo src/libs6rc/s6rc_graph_closure.lo src/libs6rc/s6rc_livedir_canon.lo src/libs6rc/s6rc_livedir_create.lo src/libs6rc/s6rc_livedir_prefix.lo src/libs6rc/s6rc_livedir_prefixsize.lo src/libs6rc/s6rc_lock.lo src/libs6rc/s6rc_read_uint.lo src/libs6rc/s6rc_sanitize_dir.lo src/libs6rc/s6rc_servicedir_internal.lo src/libs6rc/s6rc_servicedir_block.lo src/libs6rc/s6rc_servicedir_unblock.lo src/libs6rc/s6rc_servicedir_copy_offline.lo src/libs6rc/s6rc_servicedir_copy_online.lo src/libs6rc/s6rc_servicedir_manage.lo src/libs6rc/s6rc_servicedir_unsupervise.lo
+libs6rc.dylib.xyzzy:src/libs6rc/s6rc_db_check_depcycles.lo src/libs6rc/s6rc_db_check_pipelines.lo src/libs6rc/s6rc_db_check_revdeps.lo src/libs6rc/s6rc_db_read.lo src/libs6rc/s6rc_db_read_sizes.lo src/libs6rc/s6rc_db_read_uint32.lo src/libs6rc/s6rc_graph_closure.lo src/libs6rc/s6rc_live_state_size.lo src/libs6rc/s6rc_live_state_read.lo src/libs6rc/s6rc_livedir_canon.lo src/libs6rc/s6rc_livedir_create.lo src/libs6rc/s6rc_livedir_prefix.lo src/libs6rc/s6rc_livedir_prefixsize.lo src/libs6rc/s6rc_lock.lo src/libs6rc/s6rc_read_uint.lo src/libs6rc/s6rc_sanitize_dir.lo src/libs6rc/s6rc_servicedir_internal.lo src/libs6rc/s6rc_servicedir_block.lo src/libs6rc/s6rc_servicedir_unblock.lo src/libs6rc/s6rc_servicedir_copy_offline.lo src/libs6rc/s6rc_servicedir_copy_online.lo src/libs6rc/s6rc_servicedir_manage.lo src/libs6rc/s6rc_servicedir_unsupervise.lo
 s6-rc: EXTRA_LIBS := ${SYSCLOCK_LIB} ${SPAWN_LIB}
 s6-rc: src/s6-rc/s6-rc.o ${LIBS6RC} -ls6 -lskarnet
 s6-rc-bundle: EXTRA_LIBS :=
diff --git a/src/include/s6-rc/s6rc-utils.h b/src/include/s6-rc/s6rc-utils.h
index 841e026..84f035b 100644
--- a/src/include/s6-rc/s6rc-utils.h
+++ b/src/include/s6-rc/s6rc-utils.h
@@ -4,6 +4,7 @@
 #define S6RC_UTILS_H
 
 #include <sys/types.h>
+#include <stdint.h>
 
 #include <skalibs/stralloc.h>
 
@@ -19,4 +20,7 @@ extern ssize_t s6rc_livedir_prefix (char const *, char *, size_t) ;
 extern int s6rc_livedir_create (stralloc *, char const *, char const *, char const *, char const *, char const *, unsigned char const *, unsigned int, size_t *) ;
 extern int s6rc_livedir_canon (char const **) ;
 
+extern int s6rc_live_state_size (char const *, uint32_t *, uint32_t *) ;
+extern int s6rc_live_state_read (char const *, unsigned char *, uint32_t) ;
+
 #endif
diff --git a/src/libs6rc/deps-lib/s6rc b/src/libs6rc/deps-lib/s6rc
index 5dbb4de..3b0bf75 100644
--- a/src/libs6rc/deps-lib/s6rc
+++ b/src/libs6rc/deps-lib/s6rc
@@ -5,6 +5,8 @@ s6rc_db_read.o
 s6rc_db_read_sizes.o
 s6rc_db_read_uint32.o
 s6rc_graph_closure.o
+s6rc_live_state_size.o
+s6rc_live_state_read.o
 s6rc_livedir_canon.o
 s6rc_livedir_create.o
 s6rc_livedir_prefix.o
diff --git a/src/libs6rc/s6rc_live_state_read.c b/src/libs6rc/s6rc_live_state_read.c
new file mode 100644
index 0000000..592d08b
--- /dev/null
+++ b/src/libs6rc/s6rc_live_state_read.c
@@ -0,0 +1,23 @@
+/* ISC license. */
+
+#include <stdint.h>
+#include <string.h>
+#include <errno.h>
+
+#include <skalibs/djbunix.h>
+
+#include <s6-rc/s6rc-db.h>
+#include <s6-rc/s6rc-utils.h>
+
+int s6rc_live_state_read (char const *live, unsigned char *state, uint32_t n)
+{
+  size_t livelen = strlen(live) ;
+  char fn[livelen + 7] ;
+  memcpy(fn, live, livelen) ;
+  memcpy(fn + livelen, "/state", n) ;
+  ssize_t r = openreadnclose(fn, (char *)state, n) ;
+  if (r == -1) return 0 ;
+  if (r < n) return (errno = EINVAL, 0) ;
+  for (uint32_t i = 0 ; i < n ; i++) state[i] &= 1 ;
+  return 1 ;
+}
diff --git a/src/libs6rc/s6rc_live_state_size.c b/src/libs6rc/s6rc_live_state_size.c
new file mode 100644
index 0000000..3dd8b67
--- /dev/null
+++ b/src/libs6rc/s6rc_live_state_size.c
@@ -0,0 +1,30 @@
+/* ISC license. */
+
+#include <stdint.h>
+#include <string.h>
+
+#include <skalibs/djbunix.h>
+
+#include <s6-rc/s6rc-db.h>
+#include <s6-rc/s6rc-utils.h>
+
+int s6rc_live_state_size (char const *live, uint32_t *nlong, uint32_t *nshort)
+{
+  s6rc_db_t db ;
+  int fd ;
+  size_t livelen = strlen(live) ;
+  char fn[livelen + 10] ;
+  memcpy(fn, live, livelen) ;
+  memcpy(fn + livelen, "/compiled", 10) ;
+  fd = openc_readb(fn) ;
+  if (fd == -1) return 0 ;
+  if (!s6rc_db_read_sizes(fd, &db))
+  {
+    fd_close(fd) ;
+    return 0 ;
+  }
+  fd_close(fd) ;
+  *nlong = db.nlong ;
+  *nshort = db.nshort ;
+  return 1 ;
+}