1 files changed, 27 insertions, 0 deletions
diff --git a/src/libs6rc/s6rc_servicedir_block.c b/src/libs6rc/s6rc_servicedir_block.c
new file mode 100644
index 0000000..d01481b
--- /dev/null
+++ b/src/libs6rc/s6rc_servicedir_block.c
@@ -0,0 +1,27 @@
+/* ISC license. */
+
+#include <errno.h>
+#include <unistd.h>
+#include <skalibs/bytestr.h>
+#include <skalibs/djbunix.h>
+#include <s6/s6-supervise.h>
+#include <s6-rc/s6rc-servicedir.h>
+
+int s6rc_servicedir_block (char const *dir)
+{
+  unsigned int dirlen = str_len(dir) ;
+  s6_svstatus_t status ;
+  char fn[dirlen + 6] ;
+  if (!s6_svstatus_read(dir, &status)) return -1 ;
+  byte_copy(fn, dirlen, dir) ;
+  byte_copy(fn + dirlen, 6, "/down") ;
+  if (!touch(fn)) return -1 ;
+  if (s6_svc_writectl(dir, S6_SUPERVISE_CTLDIR, "O", 1) < 0)
+  {
+    register int e = errno ;
+    unlink(fn) ;
+    errno = e ;
+    return -1 ;
+  }
+  return status.flagwantup ;
+}