1 files changed, 30 insertions, 0 deletions
diff --git a/src/repo/s6rc_repo_setdelete.c b/src/repo/s6rc_repo_setdelete.c
new file mode 100644
index 0000000..a372d93
--- /dev/null
+++ b/src/repo/s6rc_repo_setdelete.c
@@ -0,0 +1,30 @@
+/* ISC license. */
+
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include <skalibs/posixplz.h>
+#include <skalibs/djbunix.h>
+
+#include <s6-rc/repo.h>
+
+void s6rc_repo_setdelete (char const *repo, char const *set)
+{
+  size_t repolen = strlen(repo) ;
+  size_t setlen = strlen(set) ;
+  ssize_t r ;
+  char real[repolen + setlen + 18] ;
+  char fn[repolen + setlen + 11] ;
+  memcpy(fn, repo, repolen) ;
+  memcpy(fn + repolen, "/sources/", 9) ;
+  memcpy(fn + repolen + 9, set, setlen + 1) ;
+  if (access(fn, W_OK) == -1 && errno != ENOENT) return ;
+  memcpy(real, repo, repolen) ;
+  memcpy(real + repolen, "/sources/", 9) ;
+  r = readlink(fn, real + repolen + 9, setlen + 9) ;
+  if (r == -1 || r != setlen + 8) return ;
+  real[repolen + setlen + 17] = 0 ;
+  unlink_void(fn) ;
+  rm_rf(real) ;
+}