Add s6rc_live_state functions

Signed-off-by: Laurent Bercot <ska@appnovation.com>

1 files changed, 30 insertions, 0 deletions

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 ;
+}