1 #ifndef _LINUX_BINFMTS_H
2 #define _LINUX_BINFMTS_H
4 #include <linux/sched.h>
5 #include <linux/unistd.h>
7 #include <uapi/linux/binfmts.h>
9 #define CORENAME_MAX_SIZE 128
12 * This structure is used to hold the arguments that are used when loading binaries.
15 char buf
[BINPRM_BUF_SIZE
];
17 struct vm_area_struct
*vma
;
18 unsigned long vma_pages
;
20 # define MAX_ARG_PAGES 32
21 struct page
*page
[MAX_ARG_PAGES
];
24 unsigned long p
; /* current top of mem */
26 cred_prepared
:1,/* true if creds already prepared (multiple
27 * preps happen for interpreters) */
28 cap_effective
:1;/* true if has elevated effective capabilities,
29 * false if not; except for init which inherits
30 * its parent's caps anyway */
34 unsigned int recursion_depth
; /* only for search_binary_handler() */
36 struct cred
*cred
; /* new credentials */
37 int unsafe
; /* how unsafe this exec is (mask of LSM_UNSAFE_*) */
38 unsigned int per_clear
; /* bits to clear in current->personality */
40 const char * filename
; /* Name of binary as seen by procps */
41 const char * interp
; /* Name of the binary really executed. Most
42 of the time same as filename, but could be
43 different for binfmt_{misc,script} */
44 unsigned interp_flags
;
46 unsigned long loader
, exec
;
49 #define BINPRM_FLAGS_ENFORCE_NONDUMP_BIT 0
50 #define BINPRM_FLAGS_ENFORCE_NONDUMP (1 << BINPRM_FLAGS_ENFORCE_NONDUMP_BIT)
52 /* fd of the binary should be passed to the interpreter */
53 #define BINPRM_FLAGS_EXECFD_BIT 1
54 #define BINPRM_FLAGS_EXECFD (1 << BINPRM_FLAGS_EXECFD_BIT)
56 /* filename of the binary will be inaccessible after exec */
57 #define BINPRM_FLAGS_PATH_INACCESSIBLE_BIT 2
58 #define BINPRM_FLAGS_PATH_INACCESSIBLE (1 << BINPRM_FLAGS_PATH_INACCESSIBLE_BIT)
60 /* Function parameter for binfmt->coredump */
61 struct coredump_params
{
62 const siginfo_t
*siginfo
;
66 unsigned long mm_flags
;
71 * This structure defines the functions that are used to load the binary formats that
76 struct module
*module
;
77 int (*load_binary
)(struct linux_binprm
*);
78 int (*load_shlib
)(struct file
*);
79 int (*core_dump
)(struct coredump_params
*cprm
);
80 unsigned long min_coredump
; /* minimal dump size */
83 extern void __register_binfmt(struct linux_binfmt
*fmt
, int insert
);
85 /* Registration of default binfmt handlers */
86 static inline void register_binfmt(struct linux_binfmt
*fmt
)
88 __register_binfmt(fmt
, 0);
90 /* Same as above, but adds a new binfmt at the top of the list */
91 static inline void insert_binfmt(struct linux_binfmt
*fmt
)
93 __register_binfmt(fmt
, 1);
96 extern void unregister_binfmt(struct linux_binfmt
*);
98 extern int prepare_binprm(struct linux_binprm
*);
99 extern int __must_check
remove_arg_zero(struct linux_binprm
*);
100 extern int search_binary_handler(struct linux_binprm
*);
101 extern int flush_old_exec(struct linux_binprm
* bprm
);
102 extern void setup_new_exec(struct linux_binprm
* bprm
);
103 extern void would_dump(struct linux_binprm
*, struct file
*);
105 extern int suid_dumpable
;
107 /* Stack area protections */
108 #define EXSTACK_DEFAULT 0 /* Whatever the arch defaults to */
109 #define EXSTACK_DISABLE_X 1 /* Disable executable stacks */
110 #define EXSTACK_ENABLE_X 2 /* Enable executable stacks */
112 extern int setup_arg_pages(struct linux_binprm
* bprm
,
113 unsigned long stack_top
,
114 int executable_stack
);
115 extern int bprm_change_interp(char *interp
, struct linux_binprm
*bprm
);
116 extern int copy_strings_kernel(int argc
, const char *const *argv
,
117 struct linux_binprm
*bprm
);
118 extern int prepare_bprm_creds(struct linux_binprm
*bprm
);
119 extern void install_exec_creds(struct linux_binprm
*bprm
);
120 extern void set_binfmt(struct linux_binfmt
*new);
121 extern ssize_t
read_code(struct file
*, unsigned long, loff_t
, size_t);
123 #endif /* _LINUX_BINFMTS_H */
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