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root/usr/lib/libc/gen/execle.c

DEFINITIONS

1. execle

   1 /*-
   2  * Copyright (c) 1991, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  30 #include <sys/cdefs.h>
  31 #include <stdarg.h>
  32 #include <stdlib.h>
  33 #include <unistd.h>
  35 int
execle(const char *name, const char *arg, ...)
  37 {
  38 #if defined(__x86__)
va_list ap;
  40         char **envp;
va_start(ap, arg);
  43         while ((va_arg(ap, char *)) != NULL)
  44                 continue;
envp = va_arg(ap, char **);
va_end(ap);
  48         return execve(name, (char **) &arg, envp);
  49 #else
va_list ap;
  51         char **argv, **envp;
  52         int i;
va_start(ap, arg);
  55         for (i = 2; va_arg(ap, char *) != NULL; i++)
  56                 continue;
va_end(ap);
argv = alloca (i * sizeof (char *));
va_start(ap, arg);
argv[0] = (char *) arg;
  63         for (i = 1; (argv[i] = (char *) va_arg(ap, char *)) != NULL; i++)
  64                 ;
envp = (char **) va_arg(ap, char **);
va_end(ap);
  68         return execve(name, argv, envp);
  69 #endif
  70 }