import winsup-2000-02-17 snapshot

1 files changed, 204 insertions, 0 deletions

diff --git a/winsup/cygwin/exec.cc b/winsup/cygwin/exec.cc
new file mode 100644
index 000000000..54d2c9577
--- /dev/null
+++ b/winsup/cygwin/exec.cc
@@ -0,0 +1,204 @@
+/* exec.cc: exec system call support.
+
+   Copyright 1996, 1997, 1998, 2000 Cygnus Solutions.
+
+This file is part of Cygwin.
+
+This software is a copyrighted work licensed under the terms of the
+Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
+details. */
+
+#include <unistd.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <ctype.h>
+#include <process.h>
+#include "winsup.h"
+
+/* This is called _execve and not execve because the real execve is defined
+   in libc/posix/execve.c.  It calls us.  */
+
+extern "C"
+pid_t
+_execve (const char *path, const char *const argv[], const char *const envp[])
+{
+  static char *const empty_env[] = { 0 };
+  MALLOC_CHECK;
+  if (!envp)
+    envp = empty_env;
+  return _spawnve (NULL, _P_OVERLAY, path, argv, envp);
+}
+
+extern "C"
+int
+execl (const char *path, const char *arg0, ...)
+{
+  int i;
+  va_list args;
+  const char *argv[1024];
+
+  va_start (args, arg0);
+  argv[0] = arg0;
+  i = 1;
+  do
+      argv[i] = va_arg (args, const char *);
+  while (argv[i++] != NULL);
+  va_end (args);
+  MALLOC_CHECK;
+  return _execve (path, (char * const  *) argv, *user_data->envptr);
+}
+
+extern "C"
+int
+execv (const char *path, char * const *argv)
+{
+  MALLOC_CHECK;
+  return _execve (path, (char * const *) argv, *user_data->envptr);
+}
+
+/* the same as a standard exec() calls family, but with NT security support */
+
+extern "C"
+pid_t
+sexecve (HANDLE hToken, const char *path, const char *const argv[],
+	 const char *const envp[])
+{
+  _spawnve (hToken, _P_OVERLAY, path, argv, envp);
+  return -1;
+}
+
+extern "C"
+int
+sexecl (HANDLE hToken, const char *path, const char *arg0, ...)
+{
+  int i;
+  va_list args;
+  const char *argv[1024];
+
+  va_start (args, arg0);
+  argv[0] = arg0;
+  i = 1;
+
+  do
+      argv[i] = va_arg (args, const char *);
+  while (argv[i++] != NULL);
+
+  va_end (args);
+
+  MALLOC_CHECK;
+  return sexecve (hToken, path, (char * const *) argv, *user_data->envptr);
+}
+
+extern "C"
+int
+sexecle (HANDLE hToken, const char *path, const char *arg0, ...)
+{
+  int i;
+  va_list args;
+  const char * const *envp;
+  const char *argv[1024];
+
+  va_start (args, arg0);
+  argv[0] = arg0;
+  i = 1;
+
+  do
+    argv[i] = va_arg (args, const char *);
+  while (argv[i++] != NULL);
+
+  envp = va_arg (args, const char * const *);
+  va_end (args);
+
+  MALLOC_CHECK;
+  return sexecve(hToken, path, (char * const *) argv, (char * const *) envp);
+}
+
+extern "C"
+int
+sexeclp (HANDLE hToken, const char *path, const char *arg0, ...)
+{
+  int i;
+  va_list args;
+  const char *argv[1024];
+
+  va_start (args, arg0);
+  argv[0] = arg0;
+  i = 1;
+
+  do
+      argv[i] = va_arg (args, const char *);
+  while (argv[i++] != NULL);
+
+  va_end (args);
+
+  MALLOC_CHECK;
+  return sexecvpe (hToken, path, (const char * const *) argv,
+					      *user_data->envptr);
+}
+
+extern "C"
+int
+sexeclpe (HANDLE hToken, const char *path, const char *arg0, ...)
+{
+  int i;
+  va_list args;
+  const char * const *envp;
+  const char *argv[1024];
+
+  va_start (args, arg0);
+  argv[0] = arg0;
+  i = 1;
+
+  do
+    argv[i] = va_arg (args, const char *);
+  while (argv[i++] != NULL);
+
+  envp = va_arg (args, const char * const *);
+  va_end (args);
+
+  MALLOC_CHECK;
+  return sexecvpe (hToken, path, argv, envp);
+}
+
+extern "C"
+int
+sexecv (HANDLE hToken, const char *path, const char * const *argv)
+{
+  MALLOC_CHECK;
+  return sexecve (hToken, path, argv, *user_data->envptr);
+}
+
+extern "C"
+int
+sexecp (HANDLE hToken, const char *path, const char * const *argv)
+{
+  MALLOC_CHECK;
+  return sexecvpe (hToken, path, argv, *user_data->envptr);
+}
+
+/*
+ * Copy string, until c or <nul> is encountered.
+ * NUL-terminate the destination string (s1).
+ * Return pointer to terminating byte in dst string.
+ */
+
+char * __stdcall
+strccpy (char *s1, const char **s2, char c)
+{
+  while (**s2 && **s2 != c)
+    *s1++ = *((*s2)++);
+  *s1 = 0;
+
+  MALLOC_CHECK;
+  return s1;
+}
+
+extern "C"
+int
+sexecvpe (HANDLE hToken, const char *file, const char * const *argv,
+	  const char *const *envp)
+{
+  char buf[MAXNAMLEN];
+  MALLOC_CHECK;
+  return sexecve (hToken, find_exec (file, buf), argv, envp);
+}