newlib/libc/posix/execl.c

   1 #ifndef _NO_EXECVE
   2
   3 /* execl.c */
   4
   5 /* This and the other exec*.c files in this directory require
   6    the target to provide the _execve syscall.  */
   7
   8 #include <_ansi.h>
   9 #include <unistd.h>
  10
  11 /* Only deal with a pointer to environ, to work around subtle bugs with shared
  12    libraries and/or small data systems where the user declares his own
  13    'environ'.  */
  14 static char ***p_environ = &environ;
  15
  16
  17 #include <stdarg.h>
  18
  19 int
  20 execl (const char *path,
  21       const char *arg0, ...)
  22
  23
  24 {
  25   int i;
  26   va_list args;
  27   const char *argv[256];
  28
  29   va_start (args, arg0);
  30   argv[0] = arg0;
  31   i = 1;
  32   do
  33       argv[i] = va_arg (args, const char *);
  34   while (argv[i++] != NULL);
  35   va_end (args);
  36
  37   return _execve (path, (char * const  *) argv, *p_environ);
  38 }
  39 #endif /* !_NO_EXECVE  */