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  */
  22 struct 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  */
  39 struct 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
  48 extern int register_binfmt(struct linux_binfmt *);
  49 extern int unregister_binfmt(struct linux_binfmt *);
  50
  51 extern int prepare_binprm(struct linux_binprm *);
  52 extern void remove_arg_zero(struct linux_binprm *);
  53 extern int search_binary_handler(struct linux_binprm *,struct pt_regs *);
  54 extern int flush_old_exec(struct linux_binprm * bprm);
  55 extern int setup_arg_pages(struct linux_binprm * bprm);
  56 extern int copy_strings(int argc,char ** argv,struct linux_binprm *bprm);
  57 extern int copy_strings_kernel(int argc,char ** argv,struct linux_binprm *bprm);
  58 extern void compute_creds(struct linux_binprm *binprm);
  59 extern int do_coredump(long signr, struct pt_regs * regs);
  60 extern 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 */