Root/
1 | #ifndef _LINUX_BINFMTS_H |
2 | #define _LINUX_BINFMTS_H |
3 | |
4 | #include <linux/capability.h> |
5 | |
6 | struct pt_regs; |
7 | |
8 | /* |
9 | * These are the maximum length and maximum number of strings passed to the |
10 | * execve() system call. MAX_ARG_STRLEN is essentially random but serves to |
11 | * prevent the kernel from being unduly impacted by misaddressed pointers. |
12 | * MAX_ARG_STRINGS is chosen to fit in a signed 32-bit integer. |
13 | */ |
14 | #define MAX_ARG_STRLEN (PAGE_SIZE * 32) |
15 | #define MAX_ARG_STRINGS 0x7FFFFFFF |
16 | |
17 | /* sizeof(linux_binprm->buf) */ |
18 | #define BINPRM_BUF_SIZE 128 |
19 | |
20 | #ifdef __KERNEL__ |
21 | #include <linux/list.h> |
22 | |
23 | #define CORENAME_MAX_SIZE 128 |
24 | |
25 | /* |
26 | * This structure is used to hold the arguments that are used when loading binaries. |
27 | */ |
28 | struct linux_binprm{ |
29 | char buf[BINPRM_BUF_SIZE]; |
30 | #ifdef CONFIG_MMU |
31 | struct vm_area_struct *vma; |
32 | #else |
33 | # define MAX_ARG_PAGES 32 |
34 | struct page *page[MAX_ARG_PAGES]; |
35 | #endif |
36 | struct mm_struct *mm; |
37 | unsigned long p; /* current top of mem */ |
38 | unsigned int |
39 | cred_prepared:1,/* true if creds already prepared (multiple |
40 | * preps happen for interpreters) */ |
41 | cap_effective:1;/* true if has elevated effective capabilities, |
42 | * false if not; except for init which inherits |
43 | * its parent's caps anyway */ |
44 | #ifdef __alpha__ |
45 | unsigned int taso:1; |
46 | #endif |
47 | unsigned int recursion_depth; |
48 | struct file * file; |
49 | struct cred *cred; /* new credentials */ |
50 | int unsafe; /* how unsafe this exec is (mask of LSM_UNSAFE_*) */ |
51 | unsigned int per_clear; /* bits to clear in current->personality */ |
52 | int argc, envc; |
53 | char * filename; /* Name of binary as seen by procps */ |
54 | char * interp; /* Name of the binary really executed. Most |
55 | of the time same as filename, but could be |
56 | different for binfmt_{misc,script} */ |
57 | unsigned interp_flags; |
58 | unsigned interp_data; |
59 | unsigned long loader, exec; |
60 | }; |
61 | |
62 | #define BINPRM_FLAGS_ENFORCE_NONDUMP_BIT 0 |
63 | #define BINPRM_FLAGS_ENFORCE_NONDUMP (1 << BINPRM_FLAGS_ENFORCE_NONDUMP_BIT) |
64 | |
65 | /* fd of the binary should be passed to the interpreter */ |
66 | #define BINPRM_FLAGS_EXECFD_BIT 1 |
67 | #define BINPRM_FLAGS_EXECFD (1 << BINPRM_FLAGS_EXECFD_BIT) |
68 | |
69 | #define BINPRM_MAX_RECURSION 4 |
70 | |
71 | /* |
72 | * This structure defines the functions that are used to load the binary formats that |
73 | * linux accepts. |
74 | */ |
75 | struct linux_binfmt { |
76 | struct list_head lh; |
77 | struct module *module; |
78 | int (*load_binary)(struct linux_binprm *, struct pt_regs * regs); |
79 | int (*load_shlib)(struct file *); |
80 | int (*core_dump)(long signr, struct pt_regs *regs, struct file *file, unsigned long limit); |
81 | unsigned long min_coredump; /* minimal dump size */ |
82 | int hasvdso; |
83 | }; |
84 | |
85 | extern int __register_binfmt(struct linux_binfmt *fmt, int insert); |
86 | |
87 | /* Registration of default binfmt handlers */ |
88 | static inline int register_binfmt(struct linux_binfmt *fmt) |
89 | { |
90 | return __register_binfmt(fmt, 0); |
91 | } |
92 | /* Same as above, but adds a new binfmt at the top of the list */ |
93 | static inline int insert_binfmt(struct linux_binfmt *fmt) |
94 | { |
95 | return __register_binfmt(fmt, 1); |
96 | } |
97 | |
98 | extern void unregister_binfmt(struct linux_binfmt *); |
99 | |
100 | extern int prepare_binprm(struct linux_binprm *); |
101 | extern int __must_check remove_arg_zero(struct linux_binprm *); |
102 | extern int search_binary_handler(struct linux_binprm *,struct pt_regs *); |
103 | extern int flush_old_exec(struct linux_binprm * bprm); |
104 | extern void setup_new_exec(struct linux_binprm * bprm); |
105 | |
106 | extern int suid_dumpable; |
107 | #define SUID_DUMP_DISABLE 0 /* No setuid dumping */ |
108 | #define SUID_DUMP_USER 1 /* Dump as user of process */ |
109 | #define SUID_DUMP_ROOT 2 /* Dump as root */ |
110 | |
111 | /* Stack area protections */ |
112 | #define EXSTACK_DEFAULT 0 /* Whatever the arch defaults to */ |
113 | #define EXSTACK_DISABLE_X 1 /* Disable executable stacks */ |
114 | #define EXSTACK_ENABLE_X 2 /* Enable executable stacks */ |
115 | |
116 | extern int setup_arg_pages(struct linux_binprm * bprm, |
117 | unsigned long stack_top, |
118 | int executable_stack); |
119 | extern int bprm_mm_init(struct linux_binprm *bprm); |
120 | extern int copy_strings_kernel(int argc,char ** argv,struct linux_binprm *bprm); |
121 | extern int prepare_bprm_creds(struct linux_binprm *bprm); |
122 | extern void install_exec_creds(struct linux_binprm *bprm); |
123 | extern void do_coredump(long signr, int exit_code, struct pt_regs *regs); |
124 | extern void set_binfmt(struct linux_binfmt *new); |
125 | extern void free_bprm(struct linux_binprm *); |
126 | |
127 | #endif /* __KERNEL__ */ |
128 | #endif /* _LINUX_BINFMTS_H */ |
129 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9