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128 lines
4.2 KiB
128 lines
4.2 KiB
#ifndef _LINUX_BINFMTS_H |
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#define _LINUX_BINFMTS_H |
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#include <linux/sched.h> |
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#include <linux/unistd.h> |
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#include <asm/exec.h> |
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#include <uapi/linux/binfmts.h> |
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#define CORENAME_MAX_SIZE 128 |
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/* |
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* This structure is used to hold the arguments that are used when loading binaries. |
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*/ |
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struct linux_binprm { |
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char buf[BINPRM_BUF_SIZE]; |
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#ifdef CONFIG_MMU |
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struct vm_area_struct *vma; |
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unsigned long vma_pages; |
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#else |
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# define MAX_ARG_PAGES 32 |
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struct page *page[MAX_ARG_PAGES]; |
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#endif |
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struct mm_struct *mm; |
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unsigned long p; /* current top of mem */ |
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unsigned int |
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cred_prepared:1,/* true if creds already prepared (multiple |
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* preps happen for interpreters) */ |
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cap_effective:1;/* true if has elevated effective capabilities, |
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* false if not; except for init which inherits |
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* its parent's caps anyway */ |
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#ifdef __alpha__ |
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unsigned int taso:1; |
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#endif |
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unsigned int recursion_depth; /* only for search_binary_handler() */ |
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struct file * file; |
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struct cred *cred; /* new credentials */ |
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int unsafe; /* how unsafe this exec is (mask of LSM_UNSAFE_*) */ |
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unsigned int per_clear; /* bits to clear in current->personality */ |
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int argc, envc; |
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const char * filename; /* Name of binary as seen by procps */ |
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const char * interp; /* Name of the binary really executed. Most |
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of the time same as filename, but could be |
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different for binfmt_{misc,script} */ |
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unsigned interp_flags; |
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unsigned interp_data; |
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unsigned long loader, exec; |
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} __randomize_layout; |
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#define BINPRM_FLAGS_ENFORCE_NONDUMP_BIT 0 |
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#define BINPRM_FLAGS_ENFORCE_NONDUMP (1 << BINPRM_FLAGS_ENFORCE_NONDUMP_BIT) |
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/* fd of the binary should be passed to the interpreter */ |
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#define BINPRM_FLAGS_EXECFD_BIT 1 |
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#define BINPRM_FLAGS_EXECFD (1 << BINPRM_FLAGS_EXECFD_BIT) |
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/* filename of the binary will be inaccessible after exec */ |
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#define BINPRM_FLAGS_PATH_INACCESSIBLE_BIT 2 |
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#define BINPRM_FLAGS_PATH_INACCESSIBLE (1 << BINPRM_FLAGS_PATH_INACCESSIBLE_BIT) |
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/* Function parameter for binfmt->coredump */ |
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struct coredump_params { |
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const siginfo_t *siginfo; |
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struct pt_regs *regs; |
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struct file *file; |
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unsigned long limit; |
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unsigned long mm_flags; |
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loff_t written; |
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loff_t pos; |
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}; |
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/* |
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* This structure defines the functions that are used to load the binary formats that |
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* linux accepts. |
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*/ |
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struct linux_binfmt { |
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struct list_head lh; |
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struct module *module; |
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int (*load_binary)(struct linux_binprm *); |
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int (*load_shlib)(struct file *); |
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int (*core_dump)(struct coredump_params *cprm); |
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void (*handle_mprotect)(struct vm_area_struct *vma, unsigned long newflags); |
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void (*handle_mmap)(struct file *); |
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unsigned long min_coredump; /* minimal dump size */ |
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} __do_const __randomize_layout; |
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extern void __register_binfmt(struct linux_binfmt *fmt, int insert); |
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/* Registration of default binfmt handlers */ |
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static inline void register_binfmt(struct linux_binfmt *fmt) |
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{ |
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__register_binfmt(fmt, 0); |
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} |
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/* Same as above, but adds a new binfmt at the top of the list */ |
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static inline void insert_binfmt(struct linux_binfmt *fmt) |
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{ |
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__register_binfmt(fmt, 1); |
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} |
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extern void unregister_binfmt(struct linux_binfmt *); |
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extern int prepare_binprm(struct linux_binprm *); |
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extern int __must_check remove_arg_zero(struct linux_binprm *); |
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extern int search_binary_handler(struct linux_binprm *); |
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extern int flush_old_exec(struct linux_binprm * bprm); |
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extern void setup_new_exec(struct linux_binprm * bprm); |
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extern void would_dump(struct linux_binprm *, struct file *); |
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extern int suid_dumpable; |
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/* Stack area protections */ |
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#define EXSTACK_DEFAULT 0 /* Whatever the arch defaults to */ |
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#define EXSTACK_DISABLE_X 1 /* Disable executable stacks */ |
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#define EXSTACK_ENABLE_X 2 /* Enable executable stacks */ |
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extern int setup_arg_pages(struct linux_binprm * bprm, |
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unsigned long stack_top, |
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int executable_stack); |
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extern int transfer_args_to_stack(struct linux_binprm *bprm, |
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unsigned long *sp_location); |
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extern int bprm_change_interp(char *interp, struct linux_binprm *bprm); |
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extern int copy_strings_kernel(int argc, const char *const *argv, |
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struct linux_binprm *bprm); |
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extern int prepare_bprm_creds(struct linux_binprm *bprm); |
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extern void install_exec_creds(struct linux_binprm *bprm); |
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extern void set_binfmt(struct linux_binfmt *new); |
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extern ssize_t read_code(struct file *, unsigned long, loff_t, size_t); |
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#endif /* _LINUX_BINFMTS_H */
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