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1da177e4 LT |
1 | #ifndef _LINUX_BINFMTS_H |
2 | #define _LINUX_BINFMTS_H | |
3 | ||
96e02d15 | 4 | #include <linux/sched.h> |
282124d1 | 5 | #include <linux/unistd.h> |
826eba4d | 6 | #include <asm/exec.h> |
607ca46e | 7 | #include <uapi/linux/binfmts.h> |
1da177e4 | 8 | |
71ce92f3 DA |
9 | #define CORENAME_MAX_SIZE 128 |
10 | ||
1da177e4 LT |
11 | /* |
12 | * This structure is used to hold the arguments that are used when loading binaries. | |
13 | */ | |
f670d0ec | 14 | struct linux_binprm { |
1da177e4 | 15 | char buf[BINPRM_BUF_SIZE]; |
b6a2fea3 OW |
16 | #ifdef CONFIG_MMU |
17 | struct vm_area_struct *vma; | |
3c77f845 | 18 | unsigned long vma_pages; |
b6a2fea3 OW |
19 | #else |
20 | # define MAX_ARG_PAGES 32 | |
1da177e4 | 21 | struct page *page[MAX_ARG_PAGES]; |
b6a2fea3 | 22 | #endif |
1da177e4 LT |
23 | struct mm_struct *mm; |
24 | unsigned long p; /* current top of mem */ | |
a50b0aa4 | 25 | unsigned int |
a6f76f23 DH |
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 */ | |
53112488 KS |
31 | #ifdef __alpha__ |
32 | unsigned int taso:1; | |
33 | #endif | |
131b2f9f | 34 | unsigned int recursion_depth; /* only for search_binary_handler() */ |
1da177e4 | 35 | struct file * file; |
a6f76f23 DH |
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 */ | |
1da177e4 | 39 | int argc, envc; |
d7627467 DH |
40 | const char * filename; /* Name of binary as seen by procps */ |
41 | const char * interp; /* Name of the binary really executed. Most | |
1da177e4 LT |
42 | of the time same as filename, but could be |
43 | different for binfmt_{misc,script} */ | |
44 | unsigned interp_flags; | |
45 | unsigned interp_data; | |
46 | unsigned long loader, exec; | |
47 | }; | |
48 | ||
49 | #define BINPRM_FLAGS_ENFORCE_NONDUMP_BIT 0 | |
50 | #define BINPRM_FLAGS_ENFORCE_NONDUMP (1 << BINPRM_FLAGS_ENFORCE_NONDUMP_BIT) | |
51 | ||
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) | |
55 | ||
f6151dfe MH |
56 | /* Function parameter for binfmt->coredump */ |
57 | struct coredump_params { | |
ec57941e | 58 | const siginfo_t *siginfo; |
f6151dfe MH |
59 | struct pt_regs *regs; |
60 | struct file *file; | |
61 | unsigned long limit; | |
30736a4d | 62 | unsigned long mm_flags; |
ecc8c772 | 63 | loff_t written; |
f6151dfe MH |
64 | }; |
65 | ||
1da177e4 LT |
66 | /* |
67 | * This structure defines the functions that are used to load the binary formats that | |
68 | * linux accepts. | |
69 | */ | |
70 | struct linux_binfmt { | |
e4dc1b14 | 71 | struct list_head lh; |
1da177e4 | 72 | struct module *module; |
71613c3b | 73 | int (*load_binary)(struct linux_binprm *); |
1da177e4 | 74 | int (*load_shlib)(struct file *); |
f6151dfe | 75 | int (*core_dump)(struct coredump_params *cprm); |
1da177e4 LT |
76 | unsigned long min_coredump; /* minimal dump size */ |
77 | }; | |
78 | ||
8fc3dc5a | 79 | extern void __register_binfmt(struct linux_binfmt *fmt, int insert); |
74641f58 IK |
80 | |
81 | /* Registration of default binfmt handlers */ | |
8fc3dc5a | 82 | static inline void register_binfmt(struct linux_binfmt *fmt) |
74641f58 | 83 | { |
8fc3dc5a | 84 | __register_binfmt(fmt, 0); |
74641f58 IK |
85 | } |
86 | /* Same as above, but adds a new binfmt at the top of the list */ | |
8fc3dc5a | 87 | static inline void insert_binfmt(struct linux_binfmt *fmt) |
74641f58 | 88 | { |
8fc3dc5a | 89 | __register_binfmt(fmt, 1); |
74641f58 IK |
90 | } |
91 | ||
f6b450d4 | 92 | extern void unregister_binfmt(struct linux_binfmt *); |
1da177e4 LT |
93 | |
94 | extern int prepare_binprm(struct linux_binprm *); | |
b6a2fea3 | 95 | extern int __must_check remove_arg_zero(struct linux_binprm *); |
3c456bfc | 96 | extern int search_binary_handler(struct linux_binprm *); |
1da177e4 | 97 | extern int flush_old_exec(struct linux_binprm * bprm); |
221af7f8 | 98 | extern void setup_new_exec(struct linux_binprm * bprm); |
1b5d783c | 99 | extern void would_dump(struct linux_binprm *, struct file *); |
1da177e4 | 100 | |
d6e71144 | 101 | extern int suid_dumpable; |
d6e71144 | 102 | |
1da177e4 LT |
103 | /* Stack area protections */ |
104 | #define EXSTACK_DEFAULT 0 /* Whatever the arch defaults to */ | |
105 | #define EXSTACK_DISABLE_X 1 /* Disable executable stacks */ | |
106 | #define EXSTACK_ENABLE_X 2 /* Enable executable stacks */ | |
107 | ||
108 | extern int setup_arg_pages(struct linux_binprm * bprm, | |
109 | unsigned long stack_top, | |
110 | int executable_stack); | |
b66c5984 | 111 | extern int bprm_change_interp(char *interp, struct linux_binprm *bprm); |
d7627467 DH |
112 | extern int copy_strings_kernel(int argc, const char *const *argv, |
113 | struct linux_binprm *bprm); | |
a2a8474c | 114 | extern int prepare_bprm_creds(struct linux_binprm *bprm); |
a6f76f23 | 115 | extern void install_exec_creds(struct linux_binprm *bprm); |
964ee7df | 116 | extern void set_binfmt(struct linux_binfmt *new); |
3dc20cb2 | 117 | extern ssize_t read_code(struct file *, unsigned long, loff_t, size_t); |
1da177e4 | 118 | |
1da177e4 | 119 | #endif /* _LINUX_BINFMTS_H */ |