sys_process.c File Reference

#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/ktr.h>
#include <sys/limits.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/reg.h>
#include <sys/syscallsubr.h>
#include <sys/sysent.h>
#include <sys/sysproto.h>
#include <sys/priv.h>
#include <sys/proc.h>
#include <sys/vnode.h>
#include <sys/ptrace.h>
#include <sys/rwlock.h>
#include <sys/sx.h>
#include <sys/malloc.h>
#include <sys/signalvar.h>
#include <sys/caprights.h>
#include <sys/filedesc.h>
#include <security/audit/audit.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <vm/vm_extern.h>
#include <vm/vm_map.h>
#include <vm/vm_kern.h>
#include <vm/vm_object.h>
#include <vm/vm_page.h>
#include <vm/vm_param.h>

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Data Structures
struct	ptrace_args

Macros
#define	PROC_ASSERT_TRACEREQ(p)   MPASS(((p)->p_flag2 & P2_PTRACEREQ) != 0)
#define	PROC_ACTION(action)
#define	PROC_READ(w, t, a)   proc_read_ ## w (t, a)
#define	PROC_WRITE(w, t, a)   proc_write_ ## w (t, a)

Functions
	__FBSDID ("$FreeBSD$")
int	proc_read_regs (struct thread *td, struct reg *regs)
int	proc_write_regs (struct thread *td, struct reg *regs)
int	proc_read_dbregs (struct thread *td, struct dbreg *dbregs)
int	proc_write_dbregs (struct thread *td, struct dbreg *dbregs)
int	proc_read_fpregs (struct thread *td, struct fpreg *fpregs)
int	proc_write_fpregs (struct thread *td, struct fpreg *fpregs)
static struct regset *	proc_find_regset (struct thread *td, int note)
static int	proc_read_regset (struct thread *td, int note, struct iovec *iov)
static int	proc_write_regset (struct thread *td, int note, struct iovec *iov)
int	proc_sstep (struct thread *td)
int	proc_rwmem (struct proc *p, struct uio *uio)
static ssize_t	proc_iop (struct thread *td, struct proc *p, vm_offset_t va, void *buf, size_t len, enum uio_rw rw)
ssize_t	proc_readmem (struct thread *td, struct proc *p, vm_offset_t va, void *buf, size_t len)
ssize_t	proc_writemem (struct thread *td, struct proc *p, vm_offset_t va, void *buf, size_t len)
static int	ptrace_vm_entry (struct thread *td, struct proc *p, struct ptrace_vm_entry *pve)
int	sys_ptrace (struct thread *td, struct ptrace_args *uap)
void	proc_set_traced (struct proc *p, bool stop)
void	ptrace_unsuspend (struct proc *p)
static int	proc_can_ptrace (struct thread *td, struct proc *p)
static struct thread *	ptrace_sel_coredump_thread (struct proc *p)
int	kern_ptrace (struct thread *td, int req, pid_t pid, void *addr, int data)

Macro Definition Documentation

PROC_ACTION

#define PROC_ACTION

(

action

)

Value:

        do {                                    \
        int error;                                                      \
                                                                        \
        PROC_LOCK_ASSERT(td->td_proc, MA_OWNED);                        \
        if ((td->td_proc->p_flag & P_INMEM) == 0)                       \
                error = EIO;                                            \
        else                                                            \
                error = (action);                                       \
        return (error);                                                 \
} while (0)

Definition at line 102 of file sys_process.c.

PROC_ASSERT_TRACEREQ

#define PROC_ASSERT_TRACEREQ

(

p

)

MPASS(((p)->p_flag2 & P2_PTRACEREQ) != 0)

Definition at line 74 of file sys_process.c.

PROC_READ

#define PROC_READ	(		w,
			t,
			a
	)		proc_read_ ## w (t, a)

Definition at line 729 of file sys_process.c.

PROC_WRITE

#define PROC_WRITE	(		w,
			t,
			a
	)		proc_write_ ## w (t, a)

Definition at line 730 of file sys_process.c.

Function Documentation

__FBSDID()

__FBSDID

(

"$FreeBSD$"

)

kern_ptrace()

int kern_ptrace	(	struct thread *	td,
		int	req,
		pid_t	pid,
		void *	addr,
		int	data
	)

Definition at line 806 of file sys_process.c.

References addr, buf, cap_write_rights, data, fget_write(), free(), initproc, kern_psignal(), malloc(), p_candebug(), p_cansee(), pfind(), proc_can_ptrace(), PROC_READ, proc_read_regset(), proc_readmem(), proc_realparent(), proc_reparent(), proc_rwmem(), proc_set_traced(), proc_wkilled(), PROC_WRITE, proc_write_regset(), proc_writemem(), proctree_lock, ptrace_coredump(), ptrace_sel_coredump_thread(), ptrace_unsuspend(), ptrace_vm_entry(), sigqueue_delete(), sigqueue_take(), tdfind(), thread_run_flash(), thread_unsuspend(), and wakeup().

Referenced by sys_ptrace().

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proc_can_ptrace()

static int proc_can_ptrace ( struct thread *  td, struct proc *  p  )

static

Definition at line 759 of file sys_process.c.

References p_candebug(), and p_cansee().

Referenced by kern_ptrace().

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proc_find_regset()

static struct regset * proc_find_regset ( struct thread *  td, int  note  )

static

Definition at line 160 of file sys_process.c.

Referenced by proc_read_regset(), and proc_write_regset().

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proc_iop()

static ssize_t proc_iop ( struct thread *  td, struct proc *  p, vm_offset_t  va, void *  buf, size_t  len, enum uio_rw  rw  )

static

Definition at line 418 of file sys_process.c.

References buf, and proc_rwmem().

Referenced by proc_readmem(), and proc_writemem().

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proc_read_dbregs()

int proc_read_dbregs	(	struct thread *	td,
		struct dbreg *	dbregs
	)

Definition at line 128 of file sys_process.c.

References PROC_ACTION.

proc_read_fpregs()

int proc_read_fpregs	(	struct thread *	td,
		struct fpreg *	fpregs
	)

Definition at line 146 of file sys_process.c.

References PROC_ACTION.

proc_read_regs()

int proc_read_regs	(	struct thread *	td,
		struct reg *	regs
	)

Definition at line 114 of file sys_process.c.

References PROC_ACTION.

proc_read_regset()

static int proc_read_regset ( struct thread *  td, int  note, struct iovec *  iov  )

static

Definition at line 183 of file sys_process.c.

References buf, free(), malloc(), PROC_ASSERT_TRACEREQ, and proc_find_regset().

Referenced by kern_ptrace().

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proc_readmem()

ssize_t proc_readmem	(	struct thread *	td,
		struct proc *	p,
		vm_offset_t	va,
		void *	buf,
		size_t	len
	)

Definition at line 444 of file sys_process.c.

References buf, and proc_iop().

Referenced by get_proc_vector(), kern_ptrace(), and proc_read_string().

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proc_rwmem()

int proc_rwmem	(	struct proc *	p,
		struct uio *	uio
	)

Definition at line 331 of file sys_process.c.

Referenced by kern_ptrace(), and proc_iop().

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proc_set_traced()

void proc_set_traced	(	struct proc *	p,
		bool	stop
	)

Definition at line 734 of file sys_process.c.

References proctree_lock, and stop.

Referenced by do_fork(), and kern_ptrace().

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proc_sstep()

int proc_sstep

(

struct thread *

td

)

Definition at line 324 of file sys_process.c.

References PROC_ACTION.

proc_write_dbregs()

int proc_write_dbregs	(	struct thread *	td,
		struct dbreg *	dbregs
	)

Definition at line 135 of file sys_process.c.

References PROC_ACTION.

proc_write_fpregs()

int proc_write_fpregs	(	struct thread *	td,
		struct fpreg *	fpregs
	)

Definition at line 153 of file sys_process.c.

References PROC_ACTION.

proc_write_regs()

int proc_write_regs	(	struct thread *	td,
		struct reg *	regs
	)

Definition at line 121 of file sys_process.c.

References PROC_ACTION.

proc_write_regset()

static int proc_write_regset ( struct thread *  td, int  note, struct iovec *  iov  )

static

Definition at line 238 of file sys_process.c.

References buf, free(), malloc(), PROC_ASSERT_TRACEREQ, and proc_find_regset().

Referenced by kern_ptrace().

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proc_writemem()

ssize_t proc_writemem	(	struct thread *	td,
		struct proc *	p,
		vm_offset_t	va,
		void *	buf,
		size_t	len
	)

Definition at line 452 of file sys_process.c.

References buf, and proc_iop().

Referenced by kern_ptrace().

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ptrace_sel_coredump_thread()

static struct thread * ptrace_sel_coredump_thread ( struct proc *  p )

static

Definition at line 791 of file sys_process.c.

Referenced by kern_ptrace().

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ptrace_unsuspend()

void ptrace_unsuspend

(

struct proc *

p

)

Definition at line 746 of file sys_process.c.

References itimer_proc_continue(), kqtimer_proc_continue(), and thread_unsuspend().

Referenced by exit1(), and kern_ptrace().

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ptrace_vm_entry()

static int ptrace_vm_entry ( struct thread *  td, struct proc *  p, struct ptrace_vm_entry *  pve  )

static

Definition at line 460 of file sys_process.c.

References free(), vn_fullpath(), vput(), and vref().

Referenced by kern_ptrace(), and sys_ptrace().

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sys_ptrace()

int sys_ptrace	(	struct thread *	td,
		struct ptrace_args *	uap
	)

Definition at line 584 of file sys_process.c.

References addr, ptrace_args::addr, allow_ptrace, ptrace_args::data, kern_ptrace(), ptrace_args::pid, ptrace_coredump(), ptrace_vm_entry(), and ptrace_args::req.

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