#include <sys/cdefs.h>
#include "opt_capsicum.h"
#include "opt_compat.h"
#include "opt_core.h"
#include <sys/param.h>
#include <sys/capability.h>
#include <sys/exec.h>
#include <sys/fcntl.h>
#include <sys/filedesc.h>
#include <sys/imgact.h>
#include <sys/imgact_elf.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/malloc.h>
#include <sys/mount.h>
#include <sys/mutex.h>
#include <sys/mman.h>
#include <sys/namei.h>
#include <sys/pioctl.h>
#include <sys/proc.h>
#include <sys/procfs.h>
#include <sys/racct.h>
#include <sys/resourcevar.h>
#include <sys/sbuf.h>
#include <sys/sf_buf.h>
#include <sys/smp.h>
#include <sys/systm.h>
#include <sys/signalvar.h>
#include <sys/stat.h>
#include <sys/sx.h>
#include <sys/syscall.h>
#include <sys/sysctl.h>
#include <sys/sysent.h>
#include <sys/vnode.h>
#include <sys/syslog.h>
#include <sys/eventhandler.h>
#include <sys/user.h>
#include <net/zlib.h>
#include <vm/vm.h>
#include <vm/vm_kern.h>
#include <vm/vm_param.h>
#include <vm/pmap.h>
#include <vm/vm_map.h>
#include <vm/vm_object.h>
#include <vm/vm_extern.h>
#include <machine/elf.h>
#include <machine/md_var.h>

Include dependency graph for imgact_elf.c:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Data Structures
struct	phdr_closure

struct	sseg_closure

struct	note_info

struct	sbuf_drain_core_params

Macros
#define	ELF_NOTE_ROUNDSIZE 4

#define	OLD_EI_BRAND 8

#define	CORE_BUF_SIZE (16 * 1024)

#define	trunc_page_ps(va, ps) ((va) & ~(ps - 1))

#define	round_page_ps(va, ps) (((va) + (ps - 1)) & ~(ps - 1))

#define	aligned(a, t) (trunc_page_ps((u_long)(a), sizeof(t)) == (u_long)(a))

#define	suword __CONCAT(suword, __ELF_WORD_SIZE)

#define	ELF_KERN_PROC_MASK 0

Typedefs
typedef void(*	segment_callback) (vm_map_entry_t, void *)

typedef void(*	outfunc_t) (void , struct sbuf , size_t *)

typedef prstatus_t	elf_prstatus_t

typedef prpsinfo_t	elf_prpsinfo_t

typedef prfpregset_t	elf_prfpregset_t

typedef prfpregset_t	elf_fpregset_t

typedef gregset_t	elf_gregset_t

typedef thrmisc_t	elf_thrmisc_t

typedef struct kinfo_proc	elf_kinfo_proc_t

typedef vm_offset_t	elf_ps_strings_t

Functions
	__FBSDID ("$BSDSUniX$")

static int __elfN()	check_header (const Elf_Ehdr *hdr)

static Elf_Brandinfo *__elfN()	get_brandinfo (struct image_params imgp, const char interp, int interp_name_len, int32_t *osrel)

static int __elfN()	load_file (struct proc p, const char file, u_long addr, u_long entry, size_t pagesize)

static int __elfN()	load_section (struct vmspace *vmspace, vm_object_t object, vm_offset_t offset, caddr_t vmaddr, size_t memsz, size_t filsz, vm_prot_t prot, size_t pagesize)

static int	__CONCAT (exec_, __elfN(imgact))

static boolean_t __elfN()	bsdsunix_trans_osrel (const Elf_Note note, int32_t osrel)

Elf_Brandnote	__elfN (kbsdsunix_brandnote)

static boolean_t	kbsdsunix_trans_osrel (const Elf_Note note, int32_t osrel)

int __elfN()	insert_brand_entry (Elf_Brandinfo *entry)

int __elfN()	remove_brand_entry (Elf_Brandinfo *entry)

int __elfN()	brand_inuse (Elf_Brandinfo *entry)

static int __elfN()	map_partial (vm_map_t map, vm_object_t object, vm_ooffset_t offset, vm_offset_t start, vm_offset_t end, vm_prot_t prot)

static int __elfN()	map_insert (vm_map_t map, vm_object_t object, vm_ooffset_t offset, vm_offset_t start, vm_offset_t end, vm_prot_t prot, int cow)

int __elfN()	bsdsunix_fixup (register_t *stack_base, struct image_params imgp)

	TAILQ_HEAD (note_info_list, note_info)

static void	cb_put_phdr (vm_map_entry_t, void *)

static void	cb_size_segment (vm_map_entry_t, void *)

static void	each_writable_segment (struct thread , segment_callback, void )

static int __elfN()	corehdr (struct thread , struct vnode , struct ucred , int, void , size_t, struct note_info_list *, size_t, gzFile)

static void __elfN()	prepare_notes (struct thread , struct note_info_list , size_t *)

static void __elfN()	puthdr (struct thread , void , size_t, int, size_t)

static void __elfN()	putnote (struct note_info , struct sbuf )

static size_t	register_note (struct note_info_list , int, outfunc_t, void )

static int	sbuf_drain_core_output (void , const char , int)

static int	sbuf_drain_count (void arg, const char data, int len)

static void __elfN()	note_fpregset (void , struct sbuf , size_t *)

static void __elfN()	note_prpsinfo (void , struct sbuf , size_t *)

static void __elfN()	note_prstatus (void , struct sbuf , size_t *)

static void __elfN()	note_threadmd (void , struct sbuf , size_t *)

static void __elfN()	note_thrmisc (void , struct sbuf , size_t *)

static void __elfN()	note_procstat_auxv (void , struct sbuf , size_t *)

static void __elfN()	note_procstat_proc (void , struct sbuf , size_t *)

static void __elfN()	note_procstat_psstrings (void , struct sbuf , size_t *)

static void	note_procstat_files (void , struct sbuf , size_t *)

static void	note_procstat_groups (void , struct sbuf , size_t *)

static void	note_procstat_osrel (void , struct sbuf , size_t *)

static void	note_procstat_rlimit (void , struct sbuf , size_t *)

static void	note_procstat_umask (void , struct sbuf , size_t *)

static void	note_procstat_vmmap (void , struct sbuf , size_t *)

static int	core_output (struct vnode vp, void base, size_t len, off_t offset, struct ucred active_cred, struct ucred file_cred, struct thread td, char core_buf, gzFile gzfile)

static int	sbuf_drain_count (void arg, const char data __unused, int len)

int __elfN()	coredump (struct thread td, struct vnode vp, off_t limit, int flags)

static boolean_t __elfN()	parse_notes (struct image_params imgp, Elf_Brandnote checknote, int32_t osrel, const Elf_Phdr pnote)

static boolean_t __elfN()	check_note (struct image_params imgp, Elf_Brandnote checknote, int32_t *osrel)

static struct execsw	__elfN (execsw)

	EXEC_SET (__CONCAT(elf, __ELF_WORD_SIZE), __elfN(execsw))

static vm_prot_t __elfN()	trans_prot (Elf_Word flags)

static Elf_Word __elfN()	untrans_prot (vm_prot_t prot)

Variables
static const char	GNU_ABI_VENDOR [] = "GNU"

static int	GNU_KBSDSUNIX_ABI_DESC = 3

Macro Definition Documentation

#define aligned	(	a,
		t
	)	(trunc_page_ps((u_long)(a), sizeof(t)) == (u_long)(a))

Referenced by load_file(), and parse_notes().

#define CORE_BUF_SIZE (16 * 1024)

Referenced by coredump(), and corehdr().

#define ELF_KERN_PROC_MASK 0

Definition at line 1637 of file imgact_elf.c.

Referenced by note_procstat_proc().

#define ELF_NOTE_ROUNDSIZE 4

Definition at line 85 of file imgact_elf.c.

Referenced by bsdsunix_trans_osrel(), kbsdsunix_trans_osrel(), parse_notes(), puthdr(), putnote(), and register_note().

#define OLD_EI_BRAND 8

Definition at line 86 of file imgact_elf.c.

Referenced by get_brandinfo().

#define round_page_ps	(	va,
		ps
	)	(((va) + (ps - 1)) & ~(ps - 1))

Referenced by load_section().

#define suword __CONCAT(suword, __ELF_WORD_SIZE)

Definition at line 978 of file imgact_elf.c.

Referenced by aiocb_store_aiocb(), aiocb_store_error(), aiocb_store_kernelinfo(), aiocb_store_status(), bsdsunix_fixup(), do_execve(), exec_copyout_strings(), and start_init().

#define trunc_page_ps	(	va,
		ps
	)	((va) & ~(ps - 1))

Referenced by load_section().

Typedef Documentation

typedef prfpregset_t elf_fpregset_t

Definition at line 1634 of file imgact_elf.c.

typedef gregset_t elf_gregset_t

Definition at line 1635 of file imgact_elf.c.

typedef struct kinfo_proc elf_kinfo_proc_t

Definition at line 1638 of file imgact_elf.c.

typedef prfpregset_t elf_prfpregset_t

Definition at line 1633 of file imgact_elf.c.

typedef prpsinfo_t elf_prpsinfo_t

Definition at line 1632 of file imgact_elf.c.

typedef prstatus_t elf_prstatus_t

Definition at line 1631 of file imgact_elf.c.

typedef vm_offset_t elf_ps_strings_t

Definition at line 1639 of file imgact_elf.c.

typedef thrmisc_t elf_thrmisc_t

Definition at line 1636 of file imgact_elf.c.

typedef void(* outfunc_t) (void *, struct sbuf *, size_t *)

Definition at line 1047 of file imgact_elf.c.

typedef void(* segment_callback) (vm_map_entry_t, void *)

Definition at line 1033 of file imgact_elf.c.

Function Documentation

static int __CONCAT	(	exec_	,
		__elfN(imgact)
	)

static

Definition at line 96 of file imgact_elf.c.

Elf_Brandnote __elfN ( kbsdsunix_brandnote )

Referenced by cb_put_phdr(), check_note(), coredump(), corehdr(), get_brandinfo(), load_file(), load_section(), map_insert(), note_threadmd(), and prepare_notes().

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static struct execsw __elfN ( execsw )

static

__FBSDID ( "$BSDSUniX$" )

int __elfN() brand_inuse ( Elf_Brandinfo * entry )

Definition at line 242 of file imgact_elf.c.

References allproc_lock.

int __elfN() bsdsunix_fixup	(	register_t **	stack_base,
		struct image_params *	imgp
	)

Definition at line 981 of file imgact_elf.c.

References free(), mp_ncpus, and suword.

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static boolean_t __elfN() bsdsunix_trans_osrel	(	const Elf_Note *	note,
		int32_t *	osrel
	)

static

Definition at line 161 of file imgact_elf.c.

References ELF_NOTE_ROUNDSIZE.

static void cb_put_phdr	(	vm_map_entry_t	entry,
		void *	closure
	)

static

Definition at line 1303 of file imgact_elf.c.

References __elfN(), phdr_closure::offset, phdr_closure::phdr, and untrans_prot().

Referenced by puthdr().

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static void cb_size_segment	(	vm_map_entry_t	entry,
		void *	closure
	)

static

Definition at line 1329 of file imgact_elf.c.

References sseg_closure::count, and sseg_closure::size.

Referenced by coredump().

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static int __elfN() check_header ( const Elf_Ehdr * hdr )

static

Definition at line 328 of file imgact_elf.c.

Referenced by load_file().

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static boolean_t __elfN() check_note	(	struct image_params *	imgp,
		Elf_Brandnote *	checknote,
		int32_t *	osrel
	)

static

Definition at line 2027 of file imgact_elf.c.

References __elfN(), and parse_notes().

Referenced by get_brandinfo().

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static int core_output	(	struct vnode *	vp,
		void *	base,
		size_t	len,
		off_t	offset,
		struct ucred *	active_cred,
		struct ucred *	file_cred,
		struct thread *	td,
		char *	core_buf,
		gzFile	gzfile
	)

static

Definition at line 1093 of file imgact_elf.c.

References panic(), and vn_rdwr_inchunks().

Referenced by coredump().

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int __elfN() coredump	(	struct thread *	td,
		struct vnode *	vp,
		off_t	limit,
		int	flags
	)

Definition at line 1178 of file imgact_elf.c.

References __elfN(), cb_size_segment(), CORE_BUF_SIZE, core_output(), corehdr(), sseg_closure::count, each_writable_segment(), free(), gz_open(), gzclose(), log(), malloc(), prepare_notes(), racct_add(), and sseg_closure::size.

Referenced by doadump().

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static int __elfN() corehdr	(	struct thread *	td,
		struct vnode *	vp,
		struct ucred *	cred,
		int	numsegs,
		void *	hdr,
		size_t	hdrsize,
		struct note_info_list *	notelst,
		size_t	notesz,
		gzFile	gzfile
	)

static

Definition at line 1411 of file imgact_elf.c.

References __elfN(), sbuf_drain_core_params::active_cred, CORE_BUF_SIZE, sbuf_drain_core_params::file_cred, sbuf_drain_core_params::offset, puthdr(), putnote(), sbuf_bcat(), sbuf_delete(), sbuf_drain_core_output(), sbuf_end_section(), sbuf_finish(), sbuf_new(), sbuf_set_drain(), sbuf_start_section(), sbuf_drain_core_params::td, and sbuf_drain_core_params::vp.

Referenced by coredump().

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static void each_writable_segment	(	struct thread *	td,
		segment_callback	func,
		void *	closure
	)

static

Definition at line 1345 of file imgact_elf.c.

Referenced by coredump(), and puthdr().

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EXEC_SET	(	__CONCAT(elf, __ELF_WORD_SIZE)	,
		__elfN(execsw)
	)

static Elf_Brandinfo* __elfN() get_brandinfo	(	struct image_params *	imgp,
		const char *	interp,
		int	interp_name_len,
		int32_t *	osrel
	)

static

Definition at line 260 of file imgact_elf.c.

References __elfN(), check_note(), and OLD_EI_BRAND.

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int __elfN() insert_brand_entry ( Elf_Brandinfo * entry )

Definition at line 207 of file imgact_elf.c.

References printf().

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static boolean_t kbsdsunix_trans_osrel	(	const Elf_Note *	note,
		int32_t *	osrel
	)

static

Definition at line 185 of file imgact_elf.c.

References ELF_NOTE_ROUNDSIZE.

static int __elfN() load_file	(	struct proc *	p,
		const char *	file,
		u_long *	addr,
		u_long *	entry,
		size_t	pagesize
	)

static

Definition at line 584 of file imgact_elf.c.

References __elfN(), aligned, check_header(), exec_check_permissions(), exec_map_first_page(), exec_unmap_first_page(), free(), load_section(), malloc(), namei(), NDFREE(), trans_prot(), and vput().

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static int __elfN() load_section	(	struct vmspace *	vmspace,
		vm_object_t	object,
		vm_offset_t	offset,
		caddr_t	vmaddr,
		size_t	memsz,
		size_t	filsz,
		vm_prot_t	prot,
		size_t	pagesize
	)