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
64#endif /* __KERNEL__ */
65#endif /* _LINUX_BINFMTS_H */
66