1 files changed, 19 insertions, 0 deletions
diff --git a/src/libs6rc/s6rc_livedir_suffix.c b/src/libs6rc/s6rc_livedir_suffix.c
new file mode 100644
index 0000000..98236cd
--- /dev/null
+++ b/src/libs6rc/s6rc_livedir_suffix.c
@@ -0,0 +1,19 @@
+/* ISC license. */
+
+#include <string.h>
+#include <errno.h>
+#include <skalibs/djbunix.h>
+#include <s6-rc/s6rc-utils.h>
+
+ssize_t s6rc_livedir_suffix (char const *live, char *s, size_t n)
+{
+  size_t llen = strlen(live) ;
+  size_t r ;
+  char sfn[llen + 8] ;
+  memcpy(sfn, live, llen) ;
+  memcpy(sfn + llen, "/suffix", 8) ;
+  r = openreadnclose(sfn, s, n) ;
+  if (r < 0) return r ;
+  if (memchr(s, '/', r)) return (errno = EINVAL, 0) ;
+  return r ;
+}