1 files changed, 40 insertions, 0 deletions
diff --git a/src/libs6rc/s6rc_repo_checkset.c b/src/libs6rc/s6rc_repo_checkset.c
new file mode 100644
index 0000000..adf8674
--- /dev/null
+++ b/src/libs6rc/s6rc_repo_checkset.c
@@ -0,0 +1,40 @@
+/* ISC license. */
+
+#include <string.h>
+#include <errno.h>
+
+#include <skalibs/stat.h>
+#include <skalibs/strerr.h>
+
+#include <s6-rc/s6rc-utils.h>
+#include <s6-rc/repo.h>
+
+int s6rc_repo_checkset (char const *repo, char const *set)
+{
+  struct stat st ;
+  size_t repolen = strlen(repo) ;
+  size_t setlen = strlen(set) ;
+  char fn[repolen + 10 + setlen] ;
+  memcpy(fn, repo, repolen) ;
+  memcpy(fn + repolen, "/sources/", 9) ;
+  memcpy(fn + repolen + 9, set, setlen + 1) ;
+  if (stat(fn, &st) == -1)
+  {
+    if (errno == ENOENT)
+    {
+      strerr_warnf4x("set ", set, " does not exist in repository ", repo) ;
+      return 3 ;
+    }
+    else
+    {
+      strerr_warnfu2sys("stat ", fn) ;
+      return 111 ;
+    }
+  }
+  if (!S_ISDIR(st.st_mode))
+  {
+    strerr_warnf3x("file ", fn, " is not a directory") ;
+    return 102 ;
+  }
+  return 0 ;
+}