1 files changed, 55 insertions, 0 deletions
diff --git a/src/s6-portable-utils/s6-chown.c b/src/s6-portable-utils/s6-chown.c
new file mode 100644
index 0000000..77cd94b
--- /dev/null
+++ b/src/s6-portable-utils/s6-chown.c
@@ -0,0 +1,55 @@
+/* ISC license. */
+
+#include <unistd.h>
+#include <stdlib.h>
+
+#include <skalibs/sgetopt.h>
+#include <skalibs/types.h>
+#include <skalibs/strerr.h>
+#include <skalibs/djbunix.h>
+
+#define USAGE "s6-chown [ -U ] [ -u uid ] [ -g gid ] file"
+
+int main (int argc, char const *const *argv)
+{
+  uid_t uid = -1 ;
+  gid_t gid = -1 ;
+  PROG = "s6-chown" ;
+  {
+    subgetopt l = SUBGETOPT_ZERO ;
+    for (;;)
+    {
+      int opt = subgetopt_r(argc, argv, "Uu:g:", &l) ;
+      if (opt == -1) break ;
+      switch (opt)
+      {
+        case 'u':
+        {
+          if (!uid0_scan(l.arg, &uid)) strerr_dieusage(100, USAGE) ;
+          break ;
+        }
+        case 'g':
+        {
+          if (!gid0_scan(l.arg, &gid)) strerr_dieusage(100, USAGE) ;
+          break ;
+        }
+        case 'U':
+        {
+          char const *s = getenv("UID") ;
+          if (!s) strerr_dienotset(100, "UID") ;
+          if (!uid0_scan(s, &uid)) strerr_dieinvalid(100, "UID") ;
+          s = getenv("GID") ;
+          if (!s) strerr_dienotset(100, "GID") ;
+          if (!gid0_scan(s, &gid)) strerr_dieinvalid(100, "GID") ;
+          break ;
+        }
+        default : strerr_dieusage(100, USAGE) ;
+      }
+    }
+    argc -= l.ind ; argv += l.ind ;
+  }
+  if (!argc) strerr_dieusage(100, USAGE) ;
+  if (chown(*argv, uid, gid) == -1)
+    strerr_diefu2sys(111, "chown ", argv[0]) ;
+  return 0 ;
+}