From ac8594589a19d7e6cfc03a0f2fc9f834a65e5241 Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Thu, 3 Jul 2025 02:10:16 +0000
Subject:  s6-rc-set-new, refactors, additions, etc.

Signed-off-by: Laurent Bercot <ska@appnovation.com>
---
 src/libs6rc/s6rc_repo_lock.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 src/libs6rc/s6rc_repo_lock.c

(limited to 'src/libs6rc/s6rc_repo_lock.c')

diff --git a/src/libs6rc/s6rc_repo_lock.c b/src/libs6rc/s6rc_repo_lock.c
new file mode 100644
index 0000000..472ff15
--- /dev/null
+++ b/src/libs6rc/s6rc_repo_lock.c
@@ -0,0 +1,20 @@
+/* ISC license. */
+
+#include <string.h>
+
+#include <skalibs/djbunix.h>
+
+#include <s6-rc/repo.h>
+
+int s6rc_repo_lock (char const *repo, int w)
+{
+  int fd ;
+  size_t repolen = strlen(repo) ;
+  char fn[repolen + 13] ;
+  memcpy(fn, repo, repolen) ;
+  memcpy(fn + repolen, "/lock", 6) ;
+  fd = openc_write(fn) ;
+  if (fd == -1) return -1 ;
+  if (fd_lock(fd, w, 0) < 1) return -1 ;
+  return fd ;
+}
-- 
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