text: /*
   * Copyright (c) 2005-2007, Kohsuke Ohtani
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. Neither the name of the author nor the names of any co-contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   */
  
  #ifndef _EXEC_H
  #define _EXEC_H
  
  #include <sys/cdefs.h>
  #include <sys/prex.h>
  #include <sys/elf.h>
  #include <sys/param.h>
  #include <sys/stat.h>
  #include <ipc/exec.h>
  
  #include <unistd.h>
  #include <assert.h>
  
  /* #define DEBUG_EXEC 1 */
  
  #ifdef DEBUG_EXEC
  #define DPRINTF(a)	dprintf a
  #define ASSERT(e)	dassert(e)
  #else
  #define DPRINTF(a)
  #define ASSERT(e)
  #endif
  
  #define HEADER_SIZE	512
  
  /*
   * Exec descriptor
   */
  struct exec {
  	char	*path;			/* path name */
  	void	*header;		/* buffer for header */
  	char	*xarg1;			/* extra arguments */
  	char	*xarg2;			/* extra arguments */
  	task_t	task;			/* task id */
  	vaddr_t	entry;			/* entry address */
  };
  
  /*
   * Definition for exec loader
   */
  struct exec_loader {
  	const char *el_name;		/* name of loader */
  	void	(*el_init)(void);	/* initialize routine */
  	int	(*el_probe)(struct exec *);	/* probe routine */
  	int	(*el_load)(struct exec *);	/* load routine */
  };
  
  /*
   * Probe result
   */
  #define PROBE_ERROR		0
  #define PROBE_MATCH		1
  #define PROBE_INDIRECT		2
  
  
  /*
   * Capability mapping
   */
  struct cap_map {
  	char	*c_path;		/* application name */
  	cap_t	c_capset;		/* capability set */
  };
  
  /*
   * Global variables
   */
  extern struct exec_loader loader_table[];
  extern const struct cap_map cap_table[];
  extern const int nloader;
  
  __BEGIN_DECLS
  void	 bind_cap(char *, task_t);
  int	 exec_bindcap(struct bind_msg *);
  int	 exec_execve(struct exec_msg *);
  __END_DECLS
  
  #endif /* !_EXEC_H */
  