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>
11 #define CORENAME_MAX_SIZE 128
14 * This structure is used to hold the arguments that are used when loading binaries.
17 char buf[BINPRM_BUF_SIZE];
19 struct vm_area_struct *vma;
20 unsigned long vma_pages;
22 # define MAX_ARG_PAGES 32
23 struct page *page[MAX_ARG_PAGES];
26 unsigned long p; /* current top of mem */
28 cred_prepared:1,/* true if creds already prepared (multiple
29 * preps happen for interpreters) */
30 cap_effective:1;/* true if has elevated effective capabilities,
31 * false if not; except for init which inherits
32 * its parent's caps anyway */
36 unsigned int recursion_depth; /* only for search_binary_handler() */
38 struct cred *cred; /* new credentials */
39 int unsafe; /* how unsafe this exec is (mask of LSM_UNSAFE_*) */
40 unsigned int per_clear; /* bits to clear in current->personality */
42 const char * filename; /* Name of binary as seen by procps */
43 const char * interp; /* Name of the binary really executed. Most
44 of the time same as filename, but could be
45 different for binfmt_{misc,script} */
46 unsigned interp_flags;
48 unsigned long loader, exec;
51 #define BINPRM_FLAGS_ENFORCE_NONDUMP_BIT 0
52 #define BINPRM_FLAGS_ENFORCE_NONDUMP (1 << BINPRM_FLAGS_ENFORCE_NONDUMP_BIT)
54 /* fd of the binary should be passed to the interpreter */
55 #define BINPRM_FLAGS_EXECFD_BIT 1
56 #define BINPRM_FLAGS_EXECFD (1 << BINPRM_FLAGS_EXECFD_BIT)
58 /* filename of the binary will be inaccessible after exec */
59 #define BINPRM_FLAGS_PATH_INACCESSIBLE_BIT 2
60 #define BINPRM_FLAGS_PATH_INACCESSIBLE (1 << BINPRM_FLAGS_PATH_INACCESSIBLE_BIT)
62 /* Function parameter for binfmt->coredump */
63 struct coredump_params {
64 const siginfo_t *siginfo;
68 unsigned long mm_flags;
74 * This structure defines the functions that are used to load the binary formats that
79 struct module *module;
80 int (*load_binary)(struct linux_binprm *);
81 int (*load_shlib)(struct file *);
82 int (*core_dump)(struct coredump_params *cprm);
83 unsigned long min_coredump; /* minimal dump size */
86 extern void __register_binfmt(struct linux_binfmt *fmt, int insert);
88 /* Registration of default binfmt handlers */
89 static inline void register_binfmt(struct linux_binfmt *fmt)
91 __register_binfmt(fmt, 0);
93 /* Same as above, but adds a new binfmt at the top of the list */
94 static inline void insert_binfmt(struct linux_binfmt *fmt)
96 __register_binfmt(fmt, 1);
99 extern void unregister_binfmt(struct linux_binfmt *);
101 extern int prepare_binprm(struct linux_binprm *);
102 extern int __must_check remove_arg_zero(struct linux_binprm *);
103 extern int search_binary_handler(struct linux_binprm *);
104 extern int flush_old_exec(struct linux_binprm * bprm);
105 extern void setup_new_exec(struct linux_binprm * bprm);
106 extern void would_dump(struct linux_binprm *, struct file *);
108 extern int suid_dumpable;
110 /* Stack area protections */
111 #define EXSTACK_DEFAULT 0 /* Whatever the arch defaults to */
112 #define EXSTACK_DISABLE_X 1 /* Disable executable stacks */
113 #define EXSTACK_ENABLE_X 2 /* Enable executable stacks */
115 extern int setup_arg_pages(struct linux_binprm * bprm,
116 unsigned long stack_top,
117 int executable_stack);
118 extern int transfer_args_to_stack(struct linux_binprm *bprm,
119 unsigned long *sp_location);
120 extern int bprm_change_interp(char *interp, struct linux_binprm *bprm);
121 extern int copy_strings_kernel(int argc, const char *const *argv,
122 struct linux_binprm *bprm);
123 extern int prepare_bprm_creds(struct linux_binprm *bprm);
124 extern void install_exec_creds(struct linux_binprm *bprm);
125 extern void set_binfmt(struct linux_binfmt *new);
126 extern ssize_t read_code(struct file *, unsigned long, loff_t, size_t);
128 extern int do_execve(struct filename *,
129 const char __user * const __user *,
130 const char __user * const __user *);
131 extern int do_execveat(int, struct filename *,
132 const char __user * const __user *,
133 const char __user * const __user *,
136 #endif /* _LINUX_BINFMTS_H */