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git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - include/linux/binfmts.h
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 */
29 * True after the bprm_set_creds hook has been called once
30 * (multiple calls can be made via prepare_binprm() for
31 * binfmt_script/misc).
35 * True if most recent call to the commoncaps bprm_set_creds
36 * hook (due to multiple prepare_binprm() calls from the
37 * binfmt_script/misc handlers) resulted in elevated
42 * Set by bprm_set_creds hook to indicate a privilege-gaining
43 * exec has happened. Used to sanitize execution environment
44 * and to set AT_SECURE auxv for glibc.
50 unsigned int recursion_depth
; /* only for search_binary_handler() */
52 struct cred
*cred
; /* new credentials */
53 int unsafe
; /* how unsafe this exec is (mask of LSM_UNSAFE_*) */
54 unsigned int per_clear
; /* bits to clear in current->personality */
56 const char * filename
; /* Name of binary as seen by procps */
57 const char * interp
; /* Name of the binary really executed. Most
58 of the time same as filename, but could be
59 different for binfmt_{misc,script} */
60 unsigned interp_flags
;
62 unsigned long loader
, exec
;
65 #define BINPRM_FLAGS_ENFORCE_NONDUMP_BIT 0
66 #define BINPRM_FLAGS_ENFORCE_NONDUMP (1 << BINPRM_FLAGS_ENFORCE_NONDUMP_BIT)
68 /* fd of the binary should be passed to the interpreter */
69 #define BINPRM_FLAGS_EXECFD_BIT 1
70 #define BINPRM_FLAGS_EXECFD (1 << BINPRM_FLAGS_EXECFD_BIT)
72 /* filename of the binary will be inaccessible after exec */
73 #define BINPRM_FLAGS_PATH_INACCESSIBLE_BIT 2
74 #define BINPRM_FLAGS_PATH_INACCESSIBLE (1 << BINPRM_FLAGS_PATH_INACCESSIBLE_BIT)
76 /* Function parameter for binfmt->coredump */
77 struct coredump_params
{
78 const siginfo_t
*siginfo
;
82 unsigned long mm_flags
;
88 * This structure defines the functions that are used to load the binary formats that
93 struct module
*module
;
94 int (*load_binary
)(struct linux_binprm
*);
95 int (*load_shlib
)(struct file
*);
96 int (*core_dump
)(struct coredump_params
*cprm
);
97 unsigned long min_coredump
; /* minimal dump size */
100 extern void __register_binfmt(struct linux_binfmt
*fmt
, int insert
);
102 /* Registration of default binfmt handlers */
103 static inline void register_binfmt(struct linux_binfmt
*fmt
)
105 __register_binfmt(fmt
, 0);
107 /* Same as above, but adds a new binfmt at the top of the list */
108 static inline void insert_binfmt(struct linux_binfmt
*fmt
)
110 __register_binfmt(fmt
, 1);
113 extern void unregister_binfmt(struct linux_binfmt
*);
115 extern int prepare_binprm(struct linux_binprm
*);
116 extern int __must_check
remove_arg_zero(struct linux_binprm
*);
117 extern int search_binary_handler(struct linux_binprm
*);
118 extern int flush_old_exec(struct linux_binprm
* bprm
);
119 extern void setup_new_exec(struct linux_binprm
* bprm
);
120 extern void would_dump(struct linux_binprm
*, struct file
*);
122 extern int suid_dumpable
;
124 /* Stack area protections */
125 #define EXSTACK_DEFAULT 0 /* Whatever the arch defaults to */
126 #define EXSTACK_DISABLE_X 1 /* Disable executable stacks */
127 #define EXSTACK_ENABLE_X 2 /* Enable executable stacks */
129 extern int setup_arg_pages(struct linux_binprm
* bprm
,
130 unsigned long stack_top
,
131 int executable_stack
);
132 extern int transfer_args_to_stack(struct linux_binprm
*bprm
,
133 unsigned long *sp_location
);
134 extern int bprm_change_interp(char *interp
, struct linux_binprm
*bprm
);
135 extern int copy_strings_kernel(int argc
, const char *const *argv
,
136 struct linux_binprm
*bprm
);
137 extern int prepare_bprm_creds(struct linux_binprm
*bprm
);
138 extern void install_exec_creds(struct linux_binprm
*bprm
);
139 extern void set_binfmt(struct linux_binfmt
*new);
140 extern ssize_t
read_code(struct file
*, unsigned long, loff_t
, size_t);
142 extern int do_execve(struct filename
*,
143 const char __user
* const __user
*,
144 const char __user
* const __user
*);
145 extern int do_execveat(int, struct filename
*,
146 const char __user
* const __user
*,
147 const char __user
* const __user
*,
150 #endif /* _LINUX_BINFMTS_H */