1 #ifndef _LINUX_BINFMTS_H
2 #define _LINUX_BINFMTS_H
4 #include <linux/capability.h>
9 * MAX_ARG_PAGES defines the number of pages allocated for arguments
10 * and envelope for the new program. 32 should suffice, this gives
11 * a maximum env+arg of 128kB w/4KB pages!
13 #define MAX_ARG_PAGES 32
15 /* sizeof(linux_binprm->buf) */
16 #define BINPRM_BUF_SIZE 128
21 * This structure is used to hold the arguments that are used when loading binaries.
24 char buf
[BINPRM_BUF_SIZE
];
25 struct page
*page
[MAX_ARG_PAGES
];
27 unsigned long p
; /* current top of mem */
31 kernel_cap_t cap_inheritable
, cap_permitted
, cap_effective
;
34 char * filename
; /* Name of binary as seen by procps */
35 char * interp
; /* Name of the binary really executed. Most
36 of the time same as filename, but could be
37 different for binfmt_{misc,script} */
38 unsigned long loader
, exec
;
42 * This structure defines the functions that are used to load the binary formats that
46 struct linux_binfmt
* next
;
47 struct module
*module
;
48 int (*load_binary
)(struct linux_binprm
*, struct pt_regs
* regs
);
49 int (*load_shlib
)(struct file
*);
50 int (*core_dump
)(long signr
, struct pt_regs
* regs
, struct file
* file
);
51 unsigned long min_coredump
; /* minimal dump size */
54 extern int register_binfmt(struct linux_binfmt
*);
55 extern int unregister_binfmt(struct linux_binfmt
*);
57 extern int prepare_binprm(struct linux_binprm
*);
58 extern void remove_arg_zero(struct linux_binprm
*);
59 extern int search_binary_handler(struct linux_binprm
*,struct pt_regs
*);
60 extern int flush_old_exec(struct linux_binprm
* bprm
);
62 /* Stack area protections */
63 #define EXSTACK_DEFAULT 0 /* Whatever the arch defaults to */
64 #define EXSTACK_DISABLE_X 1 /* Disable executable stacks */
65 #define EXSTACK_ENABLE_X 2 /* Enable executable stacks */
67 extern int setup_arg_pages(struct linux_binprm
* bprm
, int executable_stack
);
68 extern int copy_strings(int argc
,char __user
* __user
* argv
,struct linux_binprm
*bprm
);
69 extern int copy_strings_kernel(int argc
,char ** argv
,struct linux_binprm
*bprm
);
70 extern void compute_creds(struct linux_binprm
*binprm
);
71 extern int do_coredump(long signr
, int exit_code
, struct pt_regs
* regs
);
72 extern int set_binfmt(struct linux_binfmt
*new);
74 #endif /* __KERNEL__ */
75 #endif /* _LINUX_BINFMTS_H */