1 files changed, 41 insertions, 0 deletions
diff --git a/src/libexecline/el_execsequence.c b/src/libexecline/el_execsequence.c
new file mode 100644
index 0000000..6b825af
--- /dev/null
+++ b/src/libexecline/el_execsequence.c
@@ -0,0 +1,41 @@
+/* ISC license. */
+
+#include <sys/types.h>
+#ifdef EXECLINE_OLD_VARNAMES
+#include <skalibs/bytestr.h>
+#endif
+#include <skalibs/djbunix.h>
+#include <skalibs/env.h>
+#include <skalibs/strerr2.h>
+#include <skalibs/uint.h>
+#include <execline/execline.h>
+
+void el_execsequence (char const *const *argv1, char const *const *argv2, char const *const *envp)
+{
+  if (!argv2[0])
+  {
+    pathexec0_run(argv1, envp) ;
+    strerr_dieexec(111, argv1[0]) ;
+  }
+  else
+  {
+    int wstat ;
+    unsigned int j = 2 ;
+#ifdef EXECLINE_OLD_VARNAMES
+    char fmt[UINT_FMT * 2 + 15] = "?=" ;
+#else
+    char fmt[UINT_FMT + 1] = "?=" ;
+#endif
+    pid_t pid = el_spawn0(argv1[0], argv1, envp) ;
+    if (!pid) strerr_warnwu2sys("spawn ", argv1[0]) ;
+    if (wait_pid(pid, &wstat) < 0)
+      strerr_diefu2sys(111, "wait for ", argv1[0]) ;
+    j += uint_fmt(fmt + j, wait_status(wstat)) ; fmt[j++] = 0 ;
+#ifdef EXECLINE_OLD_VARNAMES
+    byte_copy(fmt + j, 13, "LASTEXITCODE=") ; j += 13 ;
+    j += uint_fmt(fmt + j, wait_status(wstat)) ; fmt[j++] = 0 ;
+#endif
+    pathexec_r(argv2, envp, env_len(envp), fmt, j) ;
+  }
+  strerr_dieexec(111, argv2[0]) ;
+}