[net-next-2.6.git] / include / linux / binfmts.h

#ifndef _LINUX_BINFMTS_H
#define _LINUX_BINFMTS_H

#include <linux/capability.h>

struct pt_regs;

/*
 * MAX_ARG_PAGES defines the number of pages allocated for arguments
 * and envelope for the new program. 32 should suffice, this gives
 * a maximum env+arg of 128kB w/4KB pages!
 */
#define MAX_ARG_PAGES 32

/* sizeof(linux_binprm->buf) */
#define BINPRM_BUF_SIZE 128

#ifdef __KERNEL__

#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];
	struct page *page[MAX_ARG_PAGES];
	struct mm_struct *mm;
	unsigned long p; /* current top of mem */
	int sh_bang;
	struct file * file;
	int e_uid, e_gid;
	kernel_cap_t cap_inheritable, cap_permitted, cap_effective;
	void *security;
	int argc, envc;
	char * filename;	/* Name of binary as seen by procps */
	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;
	unsigned long argv_len;
};

#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)


/*
 * This structure defines the functions that are used to load the binary formats that
 * linux accepts.
 */
struct linux_binfmt {
	struct linux_binfmt * next;
	struct module *module;
	int (*load_binary)(struct linux_binprm *, struct  pt_regs * regs);
	int (*load_shlib)(struct file *);
	int (*core_dump)(long signr, struct pt_regs * regs, struct file * file);
	unsigned long min_coredump;	/* minimal dump size */
	int hasvdso;
};

extern int register_binfmt(struct linux_binfmt *);
extern int unregister_binfmt(struct linux_binfmt *);

extern int prepare_binprm(struct linux_binprm *);
extern void remove_arg_zero(struct linux_binprm *);
extern int search_binary_handler(struct linux_binprm *,struct pt_regs *);
extern int flush_old_exec(struct linux_binprm * bprm);

extern int suid_dumpable;
#define SUID_DUMP_DISABLE	0	/* No setuid dumping */
#define SUID_DUMP_USER		1	/* Dump as user of process */
#define SUID_DUMP_ROOT		2	/* Dump as root */

/* 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 copy_strings_kernel(int argc,char ** argv,struct linux_binprm *bprm);
extern void compute_creds(struct linux_binprm *binprm);
extern int do_coredump(long signr, int exit_code, struct pt_regs * regs);
extern int set_binfmt(struct linux_binfmt *new);

#endif /* __KERNEL__ */
#endif /* _LINUX_BINFMTS_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef _LINUX_BINFMTS_H
	2	#define _LINUX_BINFMTS_H
	3
	4	#include <linux/capability.h>
	5
	6	struct pt_regs;
	7
	8	/*
	9	* MAX_ARG_PAGES defines the number of pages allocated for arguments
	10	* and envelope for the new program. 32 should suffice, this gives
	11	* a maximum env+arg of 128kB w/4KB pages!
	12	*/
	13	#define MAX_ARG_PAGES 32
	14
	15	/* sizeof(linux_binprm->buf) */
	16	#define BINPRM_BUF_SIZE 128
	17
	18	#ifdef __KERNEL__
	19
71ce92f3 DA	20	#define CORENAME_MAX_SIZE 128
71ce92f3 DA	21
1da177e4 LT	22	/*
	23	* This structure is used to hold the arguments that are used when loading binaries.
	24	*/
	25	struct linux_binprm{
	26	char buf[BINPRM_BUF_SIZE];
	27	struct page *page[MAX_ARG_PAGES];
	28	struct mm_struct *mm;
	29	unsigned long p; /* current top of mem */
	30	int sh_bang;
	31	struct file * file;
	32	int e_uid, e_gid;
	33	kernel_cap_t cap_inheritable, cap_permitted, cap_effective;
	34	void *security;
	35	int argc, envc;
	36	char * filename; /* Name of binary as seen by procps */
	37	char * interp; /* Name of the binary really executed. Most
	38	of the time same as filename, but could be
	39	different for binfmt_{misc,script} */
	40	unsigned interp_flags;
	41	unsigned interp_data;
	42	unsigned long loader, exec;
bdf4c48a	43	unsigned long argv_len;
1da177e4 LT	44	};
	45
	46	#define BINPRM_FLAGS_ENFORCE_NONDUMP_BIT 0
	47	#define BINPRM_FLAGS_ENFORCE_NONDUMP (1 << BINPRM_FLAGS_ENFORCE_NONDUMP_BIT)
	48
	49	/* fd of the binary should be passed to the interpreter */
	50	#define BINPRM_FLAGS_EXECFD_BIT 1
	51	#define BINPRM_FLAGS_EXECFD (1 << BINPRM_FLAGS_EXECFD_BIT)
	52
	53
	54	/*
	55	* This structure defines the functions that are used to load the binary formats that
	56	* linux accepts.
	57	*/
	58	struct linux_binfmt {
	59	struct linux_binfmt * next;
	60	struct module *module;
	61	int (load_binary)(struct linux_binprm , struct pt_regs * regs);
	62	int (load_shlib)(struct file );
	63	int (core_dump)(long signr, struct pt_regs regs, struct file * file);
	64	unsigned long min_coredump; /* minimal dump size */
9fbbd4dd	65	int hasvdso;
1da177e4 LT	66	};
	67
	68	extern int register_binfmt(struct linux_binfmt *);
	69	extern int unregister_binfmt(struct linux_binfmt *);
	70
	71	extern int prepare_binprm(struct linux_binprm *);
	72	extern void remove_arg_zero(struct linux_binprm *);
	73	extern int search_binary_handler(struct linux_binprm ,struct pt_regs );
	74	extern int flush_old_exec(struct linux_binprm * bprm);
	75
d6e71144 AC	76	extern int suid_dumpable;
	77	#define SUID_DUMP_DISABLE 0 /* No setuid dumping */
	78	#define SUID_DUMP_USER 1 /* Dump as user of process */
	79	#define SUID_DUMP_ROOT 2 /* Dump as root */
	80
1da177e4 LT	81	/* Stack area protections */
	82	#define EXSTACK_DEFAULT 0 /* Whatever the arch defaults to */
	83	#define EXSTACK_DISABLE_X 1 /* Disable executable stacks */
	84	#define EXSTACK_ENABLE_X 2 /* Enable executable stacks */
	85
	86	extern int setup_arg_pages(struct linux_binprm * bprm,
	87	unsigned long stack_top,
	88	int executable_stack);
1da177e4 LT	89	extern int copy_strings_kernel(int argc,char ** argv,struct linux_binprm *bprm);
	90	extern void compute_creds(struct linux_binprm *binprm);
	91	extern int do_coredump(long signr, int exit_code, struct pt_regs * regs);
	92	extern int set_binfmt(struct linux_binfmt *new);
	93
	94	#endif /* __KERNEL__ */
	95	#endif /* _LINUX_BINFMTS_H */