#include <sys/cdefs.h>
#include "opt_ddb.h"
#include "opt_gdb.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <sys/mount.h>
#include <sys/pcpu.h>
#include <sys/proc.h>
#include <sys/namei.h>
#include <sys/fcntl.h>
#include <sys/vnode.h>
#include <sys/linker.h>
#include <machine/elf.h>
#include <net/vnet.h>
#include <security/mac/mac_framework.h>
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/pmap.h>
#include <vm/vm_map.h>
#include <sys/link_elf.h>
#include "linker_if.h"
#include <kern/kern_ctf.c>

Include dependency graph for link_elf.c:

Data Structures
struct	elf_file

struct	elf_set

Macros
#define	MAXSEGS 4

Typedefs
typedef struct elf_file *	elf_file_t

Functions
	__FBSDID ("$BSDSUniX$")

	TAILQ_HEAD (elf_set_head, elf_set)

static int	link_elf_link_common_finish (linker_file_t)

static int	link_elf_link_preload (linker_class_t cls, const char , linker_file_t )

static int	link_elf_link_preload_finish (linker_file_t)

static int	link_elf_load_file (linker_class_t, const char , linker_file_t )

static int	link_elf_lookup_symbol (linker_file_t, const char , c_linker_sym_t )

static int	link_elf_symbol_values (linker_file_t, c_linker_sym_t, linker_symval_t *)

static int	link_elf_search_symbol (linker_file_t, caddr_t, c_linker_sym_t , long )

static void	link_elf_unload_file (linker_file_t)

static void	link_elf_unload_preload (linker_file_t)

static int	link_elf_lookup_set (linker_file_t, const char , void , void , int )

static int	link_elf_each_function_name (linker_file_t, int()(const char , void ), void )

static int	link_elf_each_function_nameval (linker_file_t, linker_function_nameval_callback_t, void *)

static void	link_elf_reloc_local (linker_file_t)

static long	link_elf_symtab_get (linker_file_t, const Elf_Sym **)

static long	link_elf_strtab_get (linker_file_t, caddr_t *)

static Elf_Addr	elf_lookup (linker_file_t, Elf_Size, int)

static int	parse_dynamic (elf_file_t)

static int	relocate_file (elf_file_t)

static int	link_elf_preload_parse_symbols (elf_file_t)

static void	elf_set_add (struct elf_set_head *list, Elf_Addr start, Elf_Addr stop, Elf_Addr base)

static int	elf_set_find (struct elf_set_head list, Elf_Addr addr, Elf_Addr start, Elf_Addr *base)

static void	elf_set_delete (struct elf_set_head *list, Elf_Addr start)

static void	link_elf_error (const char filename, const char s)

static void	link_elf_init (void *arg)

	SYSINIT (link_elf, SI_SUB_KLD, SI_ORDER_THIRD, link_elf_init, 0)

static int	parse_dpcpu (elf_file_t ef)

Elf_Addr	elf_relocaddr (linker_file_t lf, Elf_Addr x)

static const char *	symbol_name (elf_file_t ef, Elf_Size r_info)

static unsigned long	elf_hash (const char *name)

const Elf_Sym *	elf_get_sym (linker_file_t lf, Elf_Size symidx)

const char *	elf_get_symname (linker_file_t lf, Elf_Size symidx)

Variables
static kobj_method_t	link_elf_methods []

static struct linker_class	link_elf_class

static struct elf_set_head	set_pcpu_list

struct _dynamic	_DYNAMIC

Macro Definition Documentation

#define MAXSEGS 4

Definition at line 74 of file link_elf.c.

Referenced by link_elf_load_file().

Typedef Documentation

typedef struct elf_file * elf_file_t

Function Documentation

__FBSDID ( "$BSDSUniX$" )

const Elf_Sym* elf_get_sym	(	linker_file_t	lf,
		Elf_Size	symidx
	)

Definition at line 1496 of file link_elf.c.

References elf_file::nchains, and elf_file::symtab.

const char* elf_get_symname	(	linker_file_t	lf,
		Elf_Size	symidx
	)

Definition at line 1506 of file link_elf.c.

References elf_file::nchains, elf_file::strtab, sym, and elf_file::symtab.

static unsigned long elf_hash ( const char * name )

static

Definition at line 1236 of file link_elf.c.

Referenced by link_elf_lookup_symbol().

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static Elf_Addr elf_lookup	(	linker_file_t	lf,
		Elf_Size	symidx,
		int	deps
	)

static

Definition at line 1525 of file link_elf.c.

References elf_file::address, elf_set_find(), linker_file_lookup_symbol(), elf_file::nchains, set_pcpu_list, start, elf_file::strtab, sym, and elf_file::symtab.

Referenced by link_elf_reloc_local(), and relocate_file().

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Elf_Addr elf_relocaddr	(	linker_file_t	lf,
		Elf_Addr	x
	)

Definition at line 1062 of file link_elf.c.

References elf_file::pcpu_base, and elf_file::pcpu_start.

static void elf_set_add	(	struct elf_set_head *	list,
		Elf_Addr	start,
		Elf_Addr	stop,
		Elf_Addr	base
	)

static

Definition at line 199 of file link_elf.c.

References elf_set::es_base, elf_set::es_start, elf_set::es_stop, malloc(), set, start, and stop.

Referenced by parse_dpcpu().

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static void elf_set_delete	(	struct elf_set_head *	list,
		Elf_Addr	start
	)

static

Definition at line 245 of file link_elf.c.

References elf_set::es_start, free(), and set.

Referenced by link_elf_unload_file().

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static int elf_set_find	(	struct elf_set_head *	list,
		Elf_Addr	addr,
		Elf_Addr *	start,
		Elf_Addr *	base
	)

static

Definition at line 227 of file link_elf.c.

References elf_set::es_base, elf_set::es_start, and set.

Referenced by elf_lookup().

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static int link_elf_each_function_name	(	linker_file_t	file,
		int()(const char , void *)	callback,
		void *	opaque
	)

static

Definition at line 1436 of file link_elf.c.

References callback, elf_file::ddbstrtab, elf_file::ddbsymtab, and symp.

static int link_elf_each_function_nameval	(	linker_file_t	file,
		linker_function_nameval_callback_t	callback,
		void *	opaque
	)

static

Definition at line 1456 of file link_elf.c.

References callback, elf_file::ddbsymtab, link_elf_symbol_values(), and symp.

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static void link_elf_error	(	const char *	filename,
		const char *	s
	)

static

Definition at line 330 of file link_elf.c.

References printf().

Referenced by link_elf_load_file().

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static void link_elf_init ( void * arg )

static

Definition at line 371 of file link_elf.c.

References __ELF_WORD_SIZE, _DYNAMIC, elf_file::address, elf_file::dynamic, link_elf_link_common_finish(), link_elf_preload_parse_symbols(), linker_add_class(), linker_kernel_file, linker_make_file(), elf_file::modptr, elf_file::object, panic(), parse_dynamic(), preload_search_by_type(), preload_search_info(), elf_file::preloaded, and set_pcpu_list.

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static int link_elf_link_common_finish ( linker_file_t lf )

static

Definition at line 343 of file link_elf.c.

References elf_file::address, elf_file::dynamic, and malloc().

Referenced by link_elf_init(), link_elf_link_preload_finish(), and link_elf_load_file().

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static int link_elf_link_preload	(	linker_class_t	cls,
		const char *	filename,
		linker_file_t *	result
	)

static

Definition at line 639 of file link_elf.c.

References __ELF_WORD_SIZE, elf_file::address, elf_file::dynamic, link_elf_reloc_local(), linker_file_unload(), linker_make_file(), elf_file::modptr, elf_file::object, parse_dpcpu(), parse_dynamic(), preload_search_by_name(), preload_search_info(), elf_file::preloaded, and type.

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static int link_elf_link_preload_finish ( linker_file_t lf )

static

Definition at line 699 of file link_elf.c.

References elf_file::dynamic, link_elf_link_common_finish(), link_elf_preload_parse_symbols(), linker_load_module(), relocate_file(), and elf_file::strtab.

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static int link_elf_load_file	(	linker_class_t	cls,
		const char *	filename,
		linker_file_t *	result
	)

static

Definition at line 724 of file link_elf.c.

References elf_file::address, elf_file::ddbstrcnt, elf_file::ddbstrtab, elf_file::ddbsymcnt, elf_file::ddbsymtab, elf_file::dynamic, free(), Giant, link_elf_error(), link_elf_link_common_finish(), link_elf_reloc_local(), linker_file_unload(), linker_load_dependencies(), linker_load_module(), linker_make_file(), malloc(), MAXSEGS, NDFREE(), elf_file::object, parse_dpcpu(), parse_dynamic(), relocate_file(), elf_file::strbase, elf_file::strtab, elf_file::symbase, vn_close(), vn_open(), and vn_rdwr().

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static int link_elf_lookup_set	(	linker_file_t	lf,
		const char *	name,
		void ***	startp,
		void ***	stopp,
		int *	countp
	)

static

Definition at line 1383 of file link_elf.c.

References count, free(), link_elf_lookup_symbol(), link_elf_symbol_values(), malloc(), snprintf(), start, stop, and sym.

Referenced by parse_dpcpu().

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static int link_elf_lookup_symbol	(	linker_file_t	lf,
		const char *	name,
		c_linker_sym_t *	sym
	)

static

Definition at line 1252 of file link_elf.c.

References elf_file::buckets, elf_file::chains, elf_file::ddbstrtab, elf_file::ddbsymtab, elf_hash(), elf_file::nbuckets, elf_file::nchains, printf(), elf_file::strtab, symp, and elf_file::symtab.

Referenced by link_elf_lookup_set().

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static int link_elf_preload_parse_symbols ( elf_file_t ef )

static

Definition at line 435 of file link_elf.c.

References elf_file::ddbstrcnt, elf_file::ddbstrtab, elf_file::ddbsymcnt, elf_file::ddbsymtab, elf_file::modptr, preload_search_info(), printf(), strtab, and symtab.

Referenced by link_elf_init(), and link_elf_link_preload_finish().

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static void link_elf_reloc_local ( linker_file_t lf )

static

Definition at line 1574 of file link_elf.c.

References elf_file::address, elf_lookup(), elf_file::rel, elf_file::rela, elf_file::relasize, and elf_file::relsize.

Referenced by link_elf_link_preload(), and link_elf_load_file().

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static int link_elf_search_symbol	(	linker_file_t	lf,
		caddr_t	value,
		c_linker_sym_t *	sym,
		long *	diffp
	)

static

Definition at line 1344 of file link_elf.c.

References elf_file::address, elf_file::ddbsymtab, and value.

static long link_elf_strtab_get	(	linker_file_t	lf,
		caddr_t *	strtab
	)

static

Definition at line 1618 of file link_elf.c.

References elf_file::ddbstrcnt, and elf_file::ddbstrtab.

static int link_elf_symbol_values	(	linker_file_t	lf,
		c_linker_sym_t	sym,
		linker_symval_t *	symval
	)

static

Definition at line 1320 of file link_elf.c.

References elf_file::address, elf_file::ddbstrtab, elf_file::ddbsymcnt, elf_file::ddbsymtab, elf_file::nchains, elf_file::strtab, and elf_file::symtab.

Referenced by link_elf_each_function_nameval(), and link_elf_lookup_set().

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static long link_elf_symtab_get	(	linker_file_t	lf,
		const Elf_Sym **	symtab
	)

static

Definition at line 1605 of file link_elf.c.

References elf_file::ddbsymcnt, and elf_file::ddbsymtab.

static void link_elf_unload_file ( linker_file_t file )

static

Definition at line 1078 of file link_elf.c.

References elf_file::address, elf_file::ctfoff, elf_file::ctftab, dpcpu_free(), elf_set_delete(), free(), link_elf_unload_preload(), elf_file::object, elf_file::pcpu_base, elf_file::pcpu_start, elf_file::pcpu_stop, elf_file::preloaded, set_pcpu_list, elf_file::strbase, elf_file::symbase, and elf_file::typoff.

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static void link_elf_unload_preload ( linker_file_t file )

static

Definition at line 1134 of file link_elf.c.

References preload_delete_name().

Referenced by link_elf_unload_file().

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static int parse_dpcpu ( elf_file_t ef )

static

Definition at line 577 of file link_elf.c.

References count, dpcpu_alloc(), dpcpu_copy(), elf_set_add(), elf_file::lf, link_elf_lookup_set(), elf_file::pcpu_base, elf_file::pcpu_start, elf_file::pcpu_stop, and set_pcpu_list.

Referenced by link_elf_link_preload(), and link_elf_load_file().

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static int parse_dynamic ( elf_file_t ef )

static

Definition at line 488 of file link_elf.c.

References elf_file::address, elf_file::buckets, elf_file::chains, elf_file::ddbstrcnt, elf_file::ddbstrtab, elf_file::ddbsymcnt, elf_file::ddbsymtab, elf_file::dynamic, elf_file::got, elf_file::nbuckets, elf_file::nchains, elf_file::pltrel, elf_file::pltrela, elf_file::pltrelasize, elf_file::pltrelsize, elf_file::rel, elf_file::rela, elf_file::relasize, elf_file::relsize, elf_file::strsz, elf_file::strtab, and elf_file::symtab.

Referenced by link_elf_init(), link_elf_link_preload(), and link_elf_load_file().

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static int relocate_file ( elf_file_t ef )

static

Definition at line 1153 of file link_elf.c.

References elf_file::address, elf_lookup(), elf_file::lf, elf_file::pltrel, elf_file::pltrela, elf_file::pltrelasize, elf_file::pltrelsize, printf(), elf_file::rel, elf_file::rela, elf_file::relasize, elf_file::relsize, and symbol_name().

Referenced by link_elf_link_preload_finish(), and link_elf_load_file().

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static const char* symbol_name	(	elf_file_t	ef,
		Elf_Size	r_info
	)

static

Definition at line 1141 of file link_elf.c.

References elf_file::strtab, and elf_file::symtab.

Referenced by mi_startup(), and relocate_file().

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SYSINIT	(	link_elf	,
		SI_SUB_KLD	,
		SI_ORDER_THIRD	,
		link_elf_init	,
		0
	)

TAILQ_HEAD	(	elf_set_head	,
		elf_set
	)

Variable Documentation

struct _dynamic _DYNAMIC

Referenced by link_elf_init().

struct linker_class link_elf_class

static

Initial value:

= {
        "elf32",
        link_elf_methods, sizeof(struct elf_file)
}

Definition at line 180 of file link_elf.c.

kobj_method_t link_elf_methods[]

static

Initial value:

= {
        KOBJMETHOD(linker_lookup_symbol,        link_elf_lookup_symbol),
        KOBJMETHOD(linker_symbol_values,        link_elf_symbol_values),
        KOBJMETHOD(linker_search_symbol,        link_elf_search_symbol),
        KOBJMETHOD(linker_unload,               link_elf_unload_file),
        KOBJMETHOD(linker_load_file,            link_elf_load_file),
        KOBJMETHOD(linker_link_preload,         link_elf_link_preload),
        KOBJMETHOD(linker_link_preload_finish,  link_elf_link_preload_finish),
        KOBJMETHOD(linker_lookup_set,           link_elf_lookup_set),
        KOBJMETHOD(linker_each_function_name,   link_elf_each_function_name),
        KOBJMETHOD(linker_each_function_nameval, link_elf_each_function_nameval),
        KOBJMETHOD(linker_ctf_get,              link_elf_ctf_get),
        KOBJMETHOD(linker_symtab_get,           link_elf_symtab_get),
        KOBJMETHOD(linker_strtab_get,           link_elf_strtab_get),
        { 0, 0 }
}

Definition at line 163 of file link_elf.c.

struct elf_set_head set_pcpu_list

static

Definition at line 193 of file link_elf.c.

Referenced by elf_lookup(), link_elf_init(), link_elf_unload_file(), and parse_dpcpu().

Data Structures

Macros

Typedefs

Functions

Variables

Macro Definition Documentation

Typedef Documentation

Function Documentation

Variable Documentation