initial commit

1 files changed, 34 insertions, 0 deletions

diff --git a/src/skaembutils/s6-chmod.c b/src/skaembutils/s6-chmod.c
new file mode 100644
index 0000000..9cf6f80
--- /dev/null
+++ b/src/skaembutils/s6-chmod.c
@@ -0,0 +1,34 @@
+/* ISC license. */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <skalibs/uint.h>
+#include <skalibs/strerr2.h>
+
+#define USAGE "s6-chmod mode file"
+
+int main (int argc, char const *const *argv)
+{
+  mode_t mode = 0 ;
+  unsigned int m ;
+  PROG = "s6-chmod" ;
+  if (argc < 3) strerr_dieusage(100, USAGE) ;
+  if (!uint0_oscan(argv[1], &m)) strerr_dieusage(100, USAGE) ;
+
+  if (m & 0001) mode |= S_IXOTH ;
+  if (m & 0002) mode |= S_IWOTH ;
+  if (m & 0004) mode |= S_IROTH ;
+  if (m & 0010) mode |= S_IXGRP ;
+  if (m & 0020) mode |= S_IWGRP ;
+  if (m & 0040) mode |= S_IRGRP ;
+  if (m & 0100) mode |= S_IXUSR ;
+  if (m & 0200) mode |= S_IWUSR ;
+  if (m & 0400) mode |= S_IRUSR ;
+  if (m & 01000) mode |= S_ISVTX ;
+  if (m & 02000) mode |= S_ISGID ;
+  if (m & 04000) mode |= S_ISUID ;
+
+  if (chmod(argv[2], mode) == -1)
+    strerr_diefu2sys(111, "change mode of ", argv[2]) ;
+  return 0 ;
+}