binfmts.h

LINUX1.0内核源代码,学习LINUX编程的一定要看。

#ifndef _LINUX_BINFMTS_H
#define _LINUX_BINFMTS_H

#include <linux/ptrace.h>

/*
 * MAX_ARG_PAGES defines the number of pages allocated for arguments
 * and envelope for the new program. 32 should suffice, this gives
 * a maximum env+arg of 128kB !
 */
#define MAX_ARG_PAGES 32

/*
 * This structure is used to hold the arguments that are used when loading binaries.
 */
struct linux_binprm{
  char buf[128];
  unsigned long page[MAX_ARG_PAGES];
  unsigned long p;
  int sh_bang;
  struct inode * inode;
  int e_uid, e_gid;
  int argc, envc;
  char * filename;	   /* Name of binary */
};

/* This structure defines the functions that are used to load the binary formats that
 * linux accepts. */

struct linux_binfmt{
  int (*load_binary)(struct linux_binprm *, struct  pt_regs * regs);
  int (*load_shlib)(int fd);
};

extern struct linux_binfmt formats[];

extern int read_exec(struct inode *inode, unsigned long offset,
	char * addr, unsigned long count);

extern int open_inode(struct inode * inode, int mode);

extern void flush_old_exec(struct linux_binprm * bprm);
extern unsigned long change_ldt(unsigned long text_size,unsigned long * page);
extern unsigned long * create_tables(char * p,int argc,int envc,int ibcs);
extern unsigned long copy_strings(int argc,char ** argv,unsigned long *page,
		unsigned long p, int from_kmem);

#endif