1 #ifndef _LINUX_BINFMTS_H
2 #define _LINUX_BINFMTS_H
4 #include <linux/capability.h>
5 #include <linux/vs_memory.h>
10 * MAX_ARG_PAGES defines the number of pages allocated for arguments
11 * and envelope for the new program. 32 should suffice, this gives
12 * a maximum env+arg of 128kB w/4KB pages!
14 #define MAX_ARG_PAGES 32
16 /* sizeof(linux_binprm->buf) */
17 #define BINPRM_BUF_SIZE 128
22 * This structure is used to hold the arguments that are used when loading binaries.
25 char buf[BINPRM_BUF_SIZE];
26 struct page *page[MAX_ARG_PAGES];
28 unsigned long p; /* current top of mem */
32 kernel_cap_t cap_inheritable, cap_permitted, cap_effective;
35 char * filename; /* Name of binary as seen by procps */
36 char * interp; /* Name of the binary really executed. Most
37 of the time same as filename, but could be
38 different for binfmt_{misc,script} */
39 unsigned interp_flags;
41 unsigned long loader, exec;
44 #define BINPRM_FLAGS_ENFORCE_NONDUMP_BIT 0
45 #define BINPRM_FLAGS_ENFORCE_NONDUMP (1 << BINPRM_FLAGS_ENFORCE_NONDUMP_BIT)
47 /* fd of the binary should be passed to the interpreter */
48 #define BINPRM_FLAGS_EXECFD_BIT 1
49 #define BINPRM_FLAGS_EXECFD (1 << BINPRM_FLAGS_EXECFD_BIT)
53 * This structure defines the functions that are used to load the binary formats that
57 struct linux_binfmt * next;
58 struct module *module;
59 int (*load_binary)(struct linux_binprm *, struct pt_regs * regs);
60 int (*load_shlib)(struct file *);
61 int (*core_dump)(long signr, struct pt_regs * regs, struct file * file);
62 unsigned long min_coredump; /* minimal dump size */
65 extern int register_binfmt(struct linux_binfmt *);
66 extern int unregister_binfmt(struct linux_binfmt *);
68 extern int prepare_binprm(struct linux_binprm *);
69 extern void remove_arg_zero(struct linux_binprm *);
70 extern int search_binary_handler(struct linux_binprm *,struct pt_regs *);
71 extern int flush_old_exec(struct linux_binprm * bprm);
73 /* Stack area protections */
74 #define EXSTACK_DEFAULT 0 /* Whatever the arch defaults to */
75 #define EXSTACK_DISABLE_X 1 /* Disable executable stacks */
76 #define EXSTACK_ENABLE_X 2 /* Enable executable stacks */
78 extern int setup_arg_pages(struct linux_binprm * bprm, int executable_stack);
79 extern int copy_strings(int argc,char __user * __user * argv,struct linux_binprm *bprm);
80 extern int copy_strings_kernel(int argc,char ** argv,struct linux_binprm *bprm);
81 extern void compute_creds(struct linux_binprm *binprm);
82 extern int do_coredump(long signr, int exit_code, struct pt_regs * regs);
83 extern int set_binfmt(struct linux_binfmt *new);
85 #endif /* __KERNEL__ */
86 #endif /* _LINUX_BINFMTS_H */