[deliverable/linux.git] / include / linux / binfmts.h

#ifndef _LINUX_BINFMTS_H
#define _LINUX_BINFMTS_H

#include <linux/sched.h>
#include <linux/unistd.h>
#include <asm/exec.h>
#include <uapi/linux/binfmts.h>

#define CORENAME_MAX_SIZE 128

/*
 * This structure is used to hold the arguments that are used when loading binaries.
 */
struct linux_binprm {
	char buf[BINPRM_BUF_SIZE];
#ifdef CONFIG_MMU
	struct vm_area_struct *vma;
	unsigned long vma_pages;
#else
# define MAX_ARG_PAGES	32
	struct page *page[MAX_ARG_PAGES];
#endif
	struct mm_struct *mm;
	unsigned long p; /* current top of mem */
	unsigned int
		cred_prepared:1,/* true if creds already prepared (multiple
				 * preps happen for interpreters) */
		cap_effective:1;/* true if has elevated effective capabilities,
				 * false if not; except for init which inherits
				 * its parent's caps anyway */
#ifdef __alpha__
	unsigned int taso:1;
#endif
	unsigned int recursion_depth; /* only for search_binary_handler() */
	struct file * file;
	struct cred *cred;	/* new credentials */
	int unsafe;		/* how unsafe this exec is (mask of LSM_UNSAFE_*) */
	unsigned int per_clear;	/* bits to clear in current->personality */
	int argc, envc;
	const char * filename;	/* Name of binary as seen by procps */
	const char * interp;	/* Name of the binary really executed. Most
				   of the time same as filename, but could be
				   different for binfmt_{misc,script} */
	unsigned interp_flags;
	unsigned interp_data;
	unsigned long loader, exec;
};

#define BINPRM_FLAGS_ENFORCE_NONDUMP_BIT 0
#define BINPRM_FLAGS_ENFORCE_NONDUMP (1 << BINPRM_FLAGS_ENFORCE_NONDUMP_BIT)

/* fd of the binary should be passed to the interpreter */
#define BINPRM_FLAGS_EXECFD_BIT 1
#define BINPRM_FLAGS_EXECFD (1 << BINPRM_FLAGS_EXECFD_BIT)

/* Function parameter for binfmt->coredump */
struct coredump_params {
	const siginfo_t *siginfo;
	struct pt_regs *regs;
	struct file *file;
	unsigned long limit;
	unsigned long mm_flags;
	loff_t written;
};

/*
 * This structure defines the functions that are used to load the binary formats that
 * linux accepts.
 */
struct linux_binfmt {
	struct list_head lh;
	struct module *module;
	int (*load_binary)(struct linux_binprm *);
	int (*load_shlib)(struct file *);
	int (*core_dump)(struct coredump_params *cprm);
	unsigned long min_coredump;	/* minimal dump size */
};

extern void __register_binfmt(struct linux_binfmt *fmt, int insert);

/* Registration of default binfmt handlers */
static inline void register_binfmt(struct linux_binfmt *fmt)
{
	__register_binfmt(fmt, 0);
}
/* Same as above, but adds a new binfmt at the top of the list */
static inline void insert_binfmt(struct linux_binfmt *fmt)
{
	__register_binfmt(fmt, 1);
}

extern void unregister_binfmt(struct linux_binfmt *);

extern int prepare_binprm(struct linux_binprm *);
extern int __must_check remove_arg_zero(struct linux_binprm *);
extern int search_binary_handler(struct linux_binprm *);
extern int flush_old_exec(struct linux_binprm * bprm);
extern void setup_new_exec(struct linux_binprm * bprm);
extern void would_dump(struct linux_binprm *, struct file *);

extern int suid_dumpable;

/* Stack area protections */
#define EXSTACK_DEFAULT   0	/* Whatever the arch defaults to */
#define EXSTACK_DISABLE_X 1	/* Disable executable stacks */
#define EXSTACK_ENABLE_X  2	/* Enable executable stacks */

extern int setup_arg_pages(struct linux_binprm * bprm,
			   unsigned long stack_top,
			   int executable_stack);
extern int bprm_change_interp(char *interp, struct linux_binprm *bprm);
extern int copy_strings_kernel(int argc, const char *const *argv,
			       struct linux_binprm *bprm);
extern int prepare_bprm_creds(struct linux_binprm *bprm);
extern void install_exec_creds(struct linux_binprm *bprm);
extern void set_binfmt(struct linux_binfmt *new);
extern ssize_t read_code(struct file *, unsigned long, loff_t, size_t);

#endif /* _LINUX_BINFMTS_H */
Commit	Line	Data
	1	#ifndef _LINUX_BINFMTS_H
	2	#define _LINUX_BINFMTS_H
	3
	4	#include <linux/sched.h>
	5	#include <linux/unistd.h>
	6	#include <asm/exec.h>
	7	#include <uapi/linux/binfmts.h>
	8
	9	#define CORENAME_MAX_SIZE 128
	10
	11	/*
	12	* This structure is used to hold the arguments that are used when loading binaries.
	13	*/
	14	struct linux_binprm {
	15	char buf[BINPRM_BUF_SIZE];
	16	#ifdef CONFIG_MMU
	17	struct vm_area_struct *vma;
	18	unsigned long vma_pages;
	19	#else
	20	# define MAX_ARG_PAGES 32
	21	struct page *page[MAX_ARG_PAGES];
	22	#endif
	23	struct mm_struct *mm;
	24	unsigned long p; /* current top of mem */
	25	unsigned int
	26	cred_prepared:1,/* true if creds already prepared (multiple
	27	* preps happen for interpreters) */
	28	cap_effective:1;/* true if has elevated effective capabilities,
	29	* false if not; except for init which inherits
	30	* its parent's caps anyway */
	31	#ifdef __alpha__
	32	unsigned int taso:1;
	33	#endif
	34	unsigned int recursion_depth; /* only for search_binary_handler() */
	35	struct file * file;
	36	struct cred cred; / new credentials */
	37	int unsafe; /* how unsafe this exec is (mask of LSM_UNSAFE_) /
	38	unsigned int per_clear; /* bits to clear in current->personality */
	39	int argc, envc;
	40	const char * filename; /* Name of binary as seen by procps */
	41	const char * interp; /* Name of the binary really executed. Most
	42	of the time same as filename, but could be
	43	different for binfmt_{misc,script} */
	44	unsigned interp_flags;
	45	unsigned interp_data;
	46	unsigned long loader, exec;
	47	};
	48
	49	#define BINPRM_FLAGS_ENFORCE_NONDUMP_BIT 0
	50	#define BINPRM_FLAGS_ENFORCE_NONDUMP (1 << BINPRM_FLAGS_ENFORCE_NONDUMP_BIT)
	51
	52	/* fd of the binary should be passed to the interpreter */
	53	#define BINPRM_FLAGS_EXECFD_BIT 1
	54	#define BINPRM_FLAGS_EXECFD (1 << BINPRM_FLAGS_EXECFD_BIT)
	55
	56	/* Function parameter for binfmt->coredump */
	57	struct coredump_params {
	58	const siginfo_t *siginfo;
	59	struct pt_regs *regs;
	60	struct file *file;
	61	unsigned long limit;
	62	unsigned long mm_flags;
	63	loff_t written;
	64	};
	65
	66	/*
	67	* This structure defines the functions that are used to load the binary formats that
	68	* linux accepts.
	69	*/
	70	struct linux_binfmt {
	71	struct list_head lh;
	72	struct module *module;
	73	int (load_binary)(struct linux_binprm );
	74	int (load_shlib)(struct file );
	75	int (core_dump)(struct coredump_params cprm);
	76	unsigned long min_coredump; /* minimal dump size */
	77	};
	78
	79	extern void __register_binfmt(struct linux_binfmt *fmt, int insert);
	80
	81	/* Registration of default binfmt handlers */
	82	static inline void register_binfmt(struct linux_binfmt *fmt)
	83	{
	84	__register_binfmt(fmt, 0);
	85	}
	86	/* Same as above, but adds a new binfmt at the top of the list */
	87	static inline void insert_binfmt(struct linux_binfmt *fmt)
	88	{
	89	__register_binfmt(fmt, 1);
	90	}
	91
	92	extern void unregister_binfmt(struct linux_binfmt *);
	93
	94	extern int prepare_binprm(struct linux_binprm *);
	95	extern int __must_check remove_arg_zero(struct linux_binprm *);
	96	extern int search_binary_handler(struct linux_binprm *);
	97	extern int flush_old_exec(struct linux_binprm * bprm);
	98	extern void setup_new_exec(struct linux_binprm * bprm);
	99	extern void would_dump(struct linux_binprm , struct file );
	100
	101	extern int suid_dumpable;
	102
	103	/* Stack area protections */
	104	#define EXSTACK_DEFAULT 0 /* Whatever the arch defaults to */
	105	#define EXSTACK_DISABLE_X 1 /* Disable executable stacks */
	106	#define EXSTACK_ENABLE_X 2 /* Enable executable stacks */
	107
	108	extern int setup_arg_pages(struct linux_binprm * bprm,
	109	unsigned long stack_top,
	110	int executable_stack);
	111	extern int bprm_change_interp(char interp, struct linux_binprm bprm);
	112	extern int copy_strings_kernel(int argc, const char const argv,
	113	struct linux_binprm *bprm);
	114	extern int prepare_bprm_creds(struct linux_binprm *bprm);
	115	extern void install_exec_creds(struct linux_binprm *bprm);
	116	extern void set_binfmt(struct linux_binfmt *new);
	117	extern ssize_t read_code(struct file *, unsigned long, loff_t, size_t);
	118
	119	#endif /* _LINUX_BINFMTS_H */