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 */
70