text: /*-
   * Copyright (c) 1993, David Greenman
   * 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.
   * 4. Neither the name of the University nor the names of its 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 REGENTS 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.
   *
   * $FreeBSD: releng/9.3/sys/sys/imgact.h 217151 2011-01-08 16:13:44Z kib $
   */
  
  #ifndef _SYS_IMGACT_H_
  #define	_SYS_IMGACT_H_
  
  #include <sys/uio.h>
  
  #include <vm/vm.h>
  
  #define MAXSHELLCMDLEN	PAGE_SIZE
  
  struct image_args {
  	char *buf;		/* pointer to string buffer */
  	char *begin_argv;	/* beginning of argv in buf */
  	char *begin_envv;	/* beginning of envv in buf */
  	char *endp;		/* current `end' pointer of arg & env strings */
  	char *fname;            /* pointer to filename of executable (system space) */
  	char *fname_buf;	/* pointer to optional malloc(M_TEMP) buffer */
  	int stringspace;	/* space left in arg & env buffer */
  	int argc;		/* count of argument strings */
  	int envc;		/* count of environment strings */
  	int fd;			/* file descriptor of the executable */
  };
  
  struct image_params {
  	struct proc *proc;	/* our process struct */
  	struct label *execlabel;	/* optional exec label */
  	struct vnode *vp;	/* pointer to vnode of file to exec */
  	struct vm_object *object;	/* The vm object for this vp */
  	struct vattr *attr;	/* attributes of file */
  	const char *image_header; /* head of file to exec */
  	unsigned long entry_addr; /* entry address of target executable */
  	unsigned long reloc_base; /* load address of image */
  	char vmspace_destroyed;	/* flag - we've blown away original vm space */
  	char interpreted;	/* flag - this executable is interpreted */
  	char opened;		/* flag - we have opened executable vnode */
  	char *interpreter_name;	/* name of the interpreter */
  	void *auxargs;		/* ELF Auxinfo structure pointer */
  	struct sf_buf *firstpage;	/* first page that we mapped */
  	unsigned long ps_strings; /* PS_STRINGS for BSD/OS binaries */
  	size_t auxarg_size;
  	struct image_args *args;	/* system call arguments */
  	struct sysentvec *sysent;	/* system entry vector */
  	char *execpath;
  	unsigned long execpathp;
  	char *freepath;
  	unsigned long canary;
  	int canarylen;
  	unsigned long pagesizes;
  	int pagesizeslen;
  	vm_prot_t stack_prot;
  };
  
  #ifdef _KERNEL
  struct sysentvec;
  struct thread;
  
  #define IMGACT_CORE_COMPRESS	0x01
  
  int	exec_alloc_args(struct image_args *);
  int	exec_check_permissions(struct image_params *);
  register_t *exec_copyout_strings(struct image_params *);
  void	exec_free_args(struct image_args *);
  int	exec_new_vmspace(struct image_params *, struct sysentvec *);
  void	exec_setregs(struct thread *, struct image_params *, u_long);
  int	exec_shell_imgact(struct image_params *);
  int	exec_copyin_args(struct image_args *, char *, enum uio_seg,
  	char **, char **);
  #endif
  
  #endif /* !_SYS_IMGACT_H_ */
  