LXR linux-old/include/linux/binfmts.h

   1#ifndef _LINUX_BINFMTS_H
   2#define _LINUX_BINFMTS_H
   3
   4#include <linux/ptrace.h>
   5#include <linux/capability.h>
   6
   7/*
   8 * MAX_ARG_PAGES defines the number of pages allocated for arguments
   9 * and envelope for the new program. 32 should suffice, this gives
  10 * a maximum env+arg of 128kB w/4KB pages!
  11 */
  12#define MAX_ARG_PAGES 32
  13
  14/* sizeof(linux_binprm->buf) */
  15#define BINPRM_BUF_SIZE 128
  16
  17#ifdef __KERNEL__
  18
  19/*
  20 * This structure is used to hold the arguments that are used when loading binaries.
  21 */
  22struct linux_binprm{
  23        char buf[BINPRM_BUF_SIZE];
  24        struct page *page[MAX_ARG_PAGES];
  25        unsigned long p; /* current top of mem */
  26        int sh_bang;
  27        struct file * file;
  28        int e_uid, e_gid;
  29        kernel_cap_t cap_inheritable, cap_permitted, cap_effective;
  30        int argc, envc;
  31        char * filename;        /* Name of binary */
  32        unsigned long loader, exec;
  33};
  34
  35/*
  36 * This structure defines the functions that are used to load the binary formats that
  37 * linux accepts.
  38 */
  39struct linux_binfmt {
  40        struct linux_binfmt * next;
  41        struct module *module;
  42        int (*load_binary)(struct linux_binprm *, struct  pt_regs * regs);
  43        int (*load_shlib)(struct file *);
  44        int (*core_dump)(long signr, struct pt_regs * regs, struct file * file);
  45        unsigned long min_coredump;     /* minimal dump size */
  46};
  47
  48extern int register_binfmt(struct linux_binfmt *);
  49extern int unregister_binfmt(struct linux_binfmt *);
  50
  51extern int prepare_binprm(struct linux_binprm *);
  52extern void remove_arg_zero(struct linux_binprm *);
  53extern int search_binary_handler(struct linux_binprm *,struct pt_regs *);
  54extern int flush_old_exec(struct linux_binprm * bprm);
  55extern int setup_arg_pages(struct linux_binprm * bprm);
  56extern int copy_strings(int argc,char ** argv,struct linux_binprm *bprm); 
  57extern int copy_strings_kernel(int argc,char ** argv,struct linux_binprm *bprm);
  58extern void compute_creds(struct linux_binprm *binprm);
  59extern int do_coredump(long signr, struct pt_regs * regs);
  60extern void set_binfmt(struct linux_binfmt *new);
  61
  62
  63#if 0
  64/* this went away now */
  65#define change_ldt(a,b) setup_arg_pages(a,b)
  66#endif
  67
  68#endif /* __KERNEL__ */
  69#endif /* _LINUX_BINFMTS_H */
  70