1 files changed, 27 insertions, 0 deletions
diff --git a/src/libenvexec/child_spawn1_internal.c b/src/libenvexec/child_spawn1_internal.c
new file mode 100644
index 0000000..e65b588
--- /dev/null
+++ b/src/libenvexec/child_spawn1_internal.c
@@ -0,0 +1,27 @@
+/* ISC license. */
+
+#include <skalibs/djbunix.h>
+#include <skalibs/cspawn.h>
+#include "cspawn-internal.h"
+
+pid_t child_spawn1_internal (char const *prog, char const *const *argv, char const *const *envp, int *p, int to)
+{
+  pid_t pid ;
+  cspawn_fileaction fa[3] =
+  {
+    [0] = { .type = CSPAWN_FA_CLOSE, .x = { .fd = p[!(to & 1)]} },
+    [1] = { .type = CSPAWN_FA_MOVE, .x = { .fd2 = { [0] = to & 1, [1] = p[to & 1] } } },
+    [2] = { .type = CSPAWN_FA_COPY, .x = { .fd2 = { [0] = !(to & 1), [1] = to & 1 } } }
+  } ;
+
+  pid = cspawn(prog, argv, envp, CSPAWN_FLAGS_SIGBLOCKNONE, fa, 2 + !!(to & 2)) ;
+  if (!pid) goto err ;
+
+  fd_close(p[to & 1]) ;
+  return pid ;
+
+ err:
+  fd_close(p[1]) ;
+  fd_close(p[0]) ;
+  return 0 ;
+}