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 #ifdef __KERNEL__
  15
  16 /*
  17  * This structure is used to hold the arguments that are used when loading binaries.
  18  */
  19 struct linux_binprm{
  20         char buf[128];
  21         struct page *page[MAX_ARG_PAGES];
  22         unsigned long p; /* current top of mem */
  23         int sh_bang;
  24         struct dentry * dentry;
  25         int e_uid, e_gid;
  26         kernel_cap_t cap_inheritable, cap_permitted, cap_effective;
  27         int argc, envc;
  28         char * filename;        /* Name of binary */
  29         unsigned long loader, exec;
  30 };
  31
  32 /*
  33  * This structure defines the functions that are used to load the binary formats that
  34  * linux accepts.
  35  */
  36 struct linux_binfmt {
  37         struct linux_binfmt * next;
  38         struct module *module;
  39         int (*load_binary)(struct linux_binprm *, struct  pt_regs * regs);
  40         int (*load_shlib)(int fd);
  41         int (*core_dump)(long signr, struct pt_regs * regs, struct file * file);
  42         unsigned long min_coredump;     /* minimal dump size */
  43 };
  44
  45 extern int register_binfmt(struct linux_binfmt *);
  46 extern int unregister_binfmt(struct linux_binfmt *);
  47
  48 extern int read_exec(struct dentry *, unsigned long offset,
  49         char * addr, unsigned long count, int to_kmem);
  50
  51 extern int open_dentry(struct dentry *, int mode);
  52
  53 extern int prepare_binprm(struct linux_binprm *);
  54 extern void remove_arg_zero(struct linux_binprm *);
  55 extern int search_binary_handler(struct linux_binprm *,struct pt_regs *);
  56 extern int flush_old_exec(struct linux_binprm * bprm);
  57 extern int setup_arg_pages(struct linux_binprm * bprm);
  58 extern int copy_strings(int argc,char ** argv,struct linux_binprm *bprm);
  59 extern int copy_strings_kernel(int argc,char ** argv,struct linux_binprm *bprm);
  60 extern void compute_creds(struct linux_binprm *binprm);
  61 extern int do_coredump(long signr, struct pt_regs * regs);
  62
  63
  64 #if 0
  65 /* this went away now */
  66 #define change_ldt(a,b) setup_arg_pages(a,b)
  67 #endif
  68
  69 #endif /* __KERNEL__ */
  70 #endif /* _LINUX_BINFMTS_H */