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raspberrypi-kernel
提交 25149b62 编写于 作者: R Roland McGrath 提交者： Ingo Molnar
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x86: x86 ptrace merge removals 

This removes the old separate 64-bit and ia32 ptrace source files.
They are no longer used.
Signed-off-by: NRoland McGrath <roland@redhat.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
上级 cbc9d9d9
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arch/x86/ia32/ptrace32.c 已删除 100644 → 0
浏览文件 @ cbc9d9d9
/*
* 32bit ptrace for x86-64.
*
* Copyright 2001,2002 Andi Kleen, SuSE Labs.
* Some parts copied from arch/i386/kernel/ptrace.c. See that file for earlier
* copyright.
*
* This allows to access 64bit processes too; but there is no way to
* see the extended register contents.
*/
#include <linux/kernel.h>
#include <linux/stddef.h>
#include <linux/sched.h>
#include <linux/syscalls.h>
#include <linux/unistd.h>
#include <linux/mm.h>
#include <linux/err.h>
#include <linux/ptrace.h>
#include <asm/ptrace.h>
#include <asm/compat.h>
#include <asm/uaccess.h>
#include <asm/user32.h>
#include <asm/user.h>
#include <asm/errno.h>
#include <asm/debugreg.h>
#include <asm/i387.h>
#include <asm/fpu32.h>
#include <asm/ia32.h>
/*
* Determines which flags the user has access to [1 = access, 0 = no access].
* Prohibits changing ID(21), VIP(20), VIF(19), VM(17), IOPL(12-13), IF(9).
* Also masks reserved bits (31-22, 15, 5, 3, 1).
*/
#define FLAG_MASK 0x54dd5UL
#define R32(l,q) \
case offsetof(struct user32, regs.l): \
regs->q = val; break;
static int putreg32(struct task_struct *child, unsigned regno, u32 val)
{
struct pt_regs *regs = task_pt_regs(child);
switch (regno) {
case offsetof(struct user32, regs.fs):
if (val && (val & 3) != 3)
return -EIO;
child->thread.fsindex = val & 0xffff;
if (child == current)
loadsegment(fs, child->thread.fsindex);
break;
case offsetof(struct user32, regs.gs):
if (val && (val & 3) != 3)
return -EIO;
child->thread.gsindex = val & 0xffff;
if (child == current)
load_gs_index(child->thread.gsindex);
break;
case offsetof(struct user32, regs.ds):
if (val && (val & 3) != 3)
return -EIO;
child->thread.ds = val & 0xffff;
if (child == current)
loadsegment(ds, child->thread.ds);
break;
case offsetof(struct user32, regs.es):
child->thread.es = val & 0xffff;
if (child == current)
loadsegment(es, child->thread.ds);
break;
case offsetof(struct user32, regs.ss):
if ((val & 3) != 3)
return -EIO;
regs->ss = val & 0xffff;
break;
case offsetof(struct user32, regs.cs):
if ((val & 3) != 3)
return -EIO;
regs->cs = val & 0xffff;
break;
R32(ebx, bx);
R32(ecx, cx);
R32(edx, dx);
R32(edi, di);
R32(esi, si);
R32(ebp, bp);
R32(eax, ax);
R32(orig_eax, orig_ax);
R32(eip, ip);
R32(esp, sp);
case offsetof(struct user32, regs.eflags):
val &= FLAG_MASK;
/*
* If the user value contains TF, mark that
* it was not "us" (the debugger) that set it.
* If not, make sure it stays set if we had.
*/
if (val & X86_EFLAGS_TF)
clear_tsk_thread_flag(child, TIF_FORCED_TF);
else if (test_tsk_thread_flag(child, TIF_FORCED_TF))
val |= X86_EFLAGS_TF;
regs->flags = val | (regs->flags & ~FLAG_MASK);
break;
case offsetof(struct user32, u_debugreg[0]) ...
offsetof(struct user32, u_debugreg[7]):
regno -= offsetof(struct user32, u_debugreg[0]);
return ptrace_set_debugreg(child, regno / 4, val);
default:
if (regno > sizeof(struct user32) || (regno & 3))
return -EIO;
/*
* Other dummy fields in the virtual user structure
* are ignored
*/
break;
}
return 0;
}
#undef R32
#define R32(l,q) \
case offsetof(struct user32, regs.l): \
*val = regs->q; break
static int getreg32(struct task_struct *child, unsigned regno, u32 *val)
{
struct pt_regs *regs = task_pt_regs(child);
switch (regno) {
case offsetof(struct user32, regs.fs):
*val = child->thread.fsindex;
if (child == current)
asm("movl %%fs,%0" : "=r" (*val));
break;
case offsetof(struct user32, regs.gs):
*val = child->thread.gsindex;
if (child == current)
asm("movl %%gs,%0" : "=r" (*val));
break;
case offsetof(struct user32, regs.ds):
*val = child->thread.ds;
if (child == current)
asm("movl %%ds,%0" : "=r" (*val));
break;
case offsetof(struct user32, regs.es):
*val = child->thread.es;
if (child == current)
asm("movl %%es,%0" : "=r" (*val));
break;
R32(cs, cs);
R32(ss, ss);
R32(ebx, bx);
R32(ecx, cx);
R32(edx, dx);
R32(edi, di);
R32(esi, si);
R32(ebp, bp);
R32(eax, ax);
R32(orig_eax, orig_ax);
R32(eip, ip);
R32(esp, sp);
case offsetof(struct user32, regs.eflags):
/*
* If the debugger set TF, hide it from the readout.
*/
*val = regs->flags;
if (test_tsk_thread_flag(child, TIF_FORCED_TF))
*val &= ~X86_EFLAGS_TF;
break;
case offsetof(struct user32, u_debugreg[0]) ...
offsetof(struct user32, u_debugreg[7]):
regno -= offsetof(struct user32, u_debugreg[0]);
*val = ptrace_get_debugreg(child, regno / 4);
break;
default:
if (regno > sizeof(struct user32) || (regno & 3))
return -EIO;
/*
* Other dummy fields in the virtual user structure
* are ignored
*/
*val = 0;
break;
}
return 0;
}
#undef R32
static long ptrace32_siginfo(unsigned request, u32 pid, u32 addr, u32 data)
{
siginfo_t __user *si = compat_alloc_user_space(sizeof(siginfo_t));
compat_siginfo_t __user *si32 = compat_ptr(data);
siginfo_t ssi;
int ret;
if (request == PTRACE_SETSIGINFO) {
memset(&ssi, 0, sizeof(siginfo_t));
ret = copy_siginfo_from_user32(&ssi, si32);
if (ret)
return ret;
if (copy_to_user(si, &ssi, sizeof(siginfo_t)))
return -EFAULT;
}
ret = sys_ptrace(request, pid, addr, (unsigned long)si);
if (ret)
return ret;
if (request == PTRACE_GETSIGINFO) {
if (copy_from_user(&ssi, si, sizeof(siginfo_t)))
return -EFAULT;
ret = copy_siginfo_to_user32(si32, &ssi);
}
return ret;
}
asmlinkage long sys32_ptrace(long request, u32 pid, u32 addr, u32 data)
{
struct task_struct *child;
struct pt_regs *childregs;
void __user *datap = compat_ptr(data);
int ret;
__u32 val;
switch (request) {
case PTRACE_TRACEME:
case PTRACE_ATTACH:
case PTRACE_KILL:
case PTRACE_CONT:
case PTRACE_SINGLESTEP:
case PTRACE_SINGLEBLOCK:
case PTRACE_DETACH:
case PTRACE_SYSCALL:
case PTRACE_OLDSETOPTIONS:
case PTRACE_SETOPTIONS:
case PTRACE_SET_THREAD_AREA:
case PTRACE_GET_THREAD_AREA:
return sys_ptrace(request, pid, addr, data);
default:
return -EINVAL;
case PTRACE_PEEKTEXT:
case PTRACE_PEEKDATA:
case PTRACE_POKEDATA:
case PTRACE_POKETEXT:
case PTRACE_POKEUSR:
case PTRACE_PEEKUSR:
case PTRACE_GETREGS:
case PTRACE_SETREGS:
case PTRACE_SETFPREGS:
case PTRACE_GETFPREGS:
case PTRACE_SETFPXREGS:
case PTRACE_GETFPXREGS:
case PTRACE_GETEVENTMSG:
break;
case PTRACE_SETSIGINFO:
case PTRACE_GETSIGINFO:
return ptrace32_siginfo(request, pid, addr, data);
}
child = ptrace_get_task_struct(pid);
if (IS_ERR(child))
return PTR_ERR(child);
ret = ptrace_check_attach(child, request == PTRACE_KILL);
if (ret < 0)
goto out;
childregs = task_pt_regs(child);
switch (request) {
case PTRACE_PEEKDATA:
case PTRACE_PEEKTEXT:
ret = 0;
if (access_process_vm(child, addr, &val, sizeof(u32), 0) !=
sizeof(u32))
ret = -EIO;
else
ret = put_user(val, (unsigned int __user *)datap);
break;
case PTRACE_POKEDATA:
case PTRACE_POKETEXT:
ret = 0;
if (access_process_vm(child, addr, &data, sizeof(u32), 1) !=
sizeof(u32))
ret = -EIO;
break;
case PTRACE_PEEKUSR:
ret = getreg32(child, addr, &val);
if (ret == 0)
ret = put_user(val, (__u32 __user *)datap);
break;
case PTRACE_POKEUSR:
ret = putreg32(child, addr, data);
break;
case PTRACE_GETREGS: { /* Get all gp regs from the child. */
int i;
if (!access_ok(VERIFY_WRITE, datap, 16*4)) {
ret = -EIO;
break;
}
ret = 0;
for (i = 0; i <= 16*4; i += sizeof(__u32)) {
getreg32(child, i, &val);
ret |= __put_user(val, (u32 __user *)datap);
datap += sizeof(u32);
}
break;
}
case PTRACE_SETREGS: { /* Set all gp regs in the child. */
unsigned long tmp;
int i;
if (!access_ok(VERIFY_READ, datap, 16*4)) {
ret = -EIO;
break;
}
ret = 0;
for (i = 0; i <= 16*4; i += sizeof(u32)) {
ret |= __get_user(tmp, (u32 __user *)datap);
putreg32(child, i, tmp);
datap += sizeof(u32);
}
break;
}
case PTRACE_GETFPREGS:
ret = -EIO;
if (!access_ok(VERIFY_READ, compat_ptr(data),
sizeof(struct user_i387_struct)))
break;
save_i387_ia32(child, datap, childregs, 1);
ret = 0;
break;
case PTRACE_SETFPREGS:
ret = -EIO;
if (!access_ok(VERIFY_WRITE, datap,
sizeof(struct user_i387_struct)))
break;
ret = 0;
/* don't check EFAULT to be bug-to-bug compatible to i386 */
restore_i387_ia32(child, datap, 1);
break;
case PTRACE_GETFPXREGS: {
struct user32_fxsr_struct __user *u = datap;
init_fpu(child);
ret = -EIO;
if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
break;
ret = -EFAULT;
if (__copy_to_user(u, &child->thread.i387.fxsave, sizeof(*u)))
break;
ret = __put_user(childregs->cs, &u->fcs);
ret |= __put_user(child->thread.ds, &u->fos);
break;
}
case PTRACE_SETFPXREGS: {
struct user32_fxsr_struct __user *u = datap;
unlazy_fpu(child);
ret = -EIO;
if (!access_ok(VERIFY_READ, u, sizeof(*u)))
break;
/*
* no checking to be bug-to-bug compatible with i386.
* but silence warning
*/
if (__copy_from_user(&child->thread.i387.fxsave, u, sizeof(*u)))
;
set_stopped_child_used_math(child);
child->thread.i387.fxsave.mxcsr &= mxcsr_feature_mask;
ret = 0;
break;
}
case PTRACE_GETEVENTMSG:
ret = put_user(child->ptrace_message,
(unsigned int __user *)compat_ptr(data));
break;
default:
BUG();
}
out:
put_task_struct(child);
return ret;
}
arch/x86/kernel/ptrace_64.c 已删除 100644 → 0
浏览文件 @ cbc9d9d9
/* By Ross Biro 1/23/92 */
/*
* Pentium III FXSR, SSE support
* Gareth Hughes <gareth@valinux.com>, May 2000
*
* x86-64 port 2000-2002 Andi Kleen
*/
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/smp.h>
#include <linux/errno.h>
#include <linux/ptrace.h>
#include <linux/user.h>
#include <linux/security.h>
#include <linux/audit.h>
#include <linux/seccomp.h>
#include <linux/signal.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
#include <asm/system.h>
#include <asm/processor.h>
#include <asm/prctl.h>
#include <asm/i387.h>
#include <asm/debugreg.h>
#include <asm/ldt.h>
#include <asm/desc.h>
#include <asm/proto.h>
#include <asm/ia32.h>
/*
* does not yet catch signals sent when the child dies.
* in exit.c or in signal.c.
*/
/*
* Determines which flags the user has access to [1 = access, 0 = no access].
* Prohibits changing ID(21), VIP(20), VIF(19), VM(17), IOPL(12-13), IF(9).
* Also masks reserved bits (63-22, 15, 5, 3, 1).
*/
#define FLAG_MASK 0x54dd5UL
/*
* Called by kernel/ptrace.c when detaching..
*
* Make sure the single step bit is not set.
*/
void ptrace_disable(struct task_struct *child)
{
user_disable_single_step(child);
}
static unsigned long *pt_regs_access(struct pt_regs *regs, unsigned long offset)
{
BUILD_BUG_ON(offsetof(struct pt_regs, r15) != 0);
return &regs->r15 + (offset / sizeof(regs->r15));
}
static int putreg(struct task_struct *child,
unsigned long regno, unsigned long value)
{
struct pt_regs *regs = task_pt_regs(child);
switch (regno) {
case offsetof(struct user_regs_struct,fs):
if (value && (value & 3) != 3)
return -EIO;
child->thread.fsindex = value & 0xffff;
if (child == current)
loadsegment(fs, child->thread.fsindex);
return 0;
case offsetof(struct user_regs_struct,gs):
if (value && (value & 3) != 3)
return -EIO;
child->thread.gsindex = value & 0xffff;
if (child == current)
load_gs_index(child->thread.gsindex);
return 0;
case offsetof(struct user_regs_struct,ds):
if (value && (value & 3) != 3)
return -EIO;
child->thread.ds = value & 0xffff;
if (child == current)
loadsegment(ds, child->thread.ds);
return 0;
case offsetof(struct user_regs_struct,es):
if (value && (value & 3) != 3)
return -EIO;
child->thread.es = value & 0xffff;
if (child == current)
loadsegment(es, child->thread.es);
return 0;
case offsetof(struct user_regs_struct,ss):
if ((value & 3) != 3)
return -EIO;
value &= 0xffff;
return 0;
case offsetof(struct user_regs_struct,fs_base):
if (value >= TASK_SIZE_OF(child))
return -EIO;
/*
* When changing the segment base, use do_arch_prctl
* to set either thread.fs or thread.fsindex and the
* corresponding GDT slot.
*/
if (child->thread.fs != value)
return do_arch_prctl(child, ARCH_SET_FS, value);
return 0;
case offsetof(struct user_regs_struct,gs_base):
/*
* Exactly the same here as the %fs handling above.
*/
if (value >= TASK_SIZE_OF(child))
return -EIO;
if (child->thread.gs != value)
return do_arch_prctl(child, ARCH_SET_GS, value);
return 0;
case offsetof(struct user_regs_struct,flags):
value &= FLAG_MASK;
/*
* If the user value contains TF, mark that
* it was not "us" (the debugger) that set it.
* If not, make sure it stays set if we had.
*/
if (value & X86_EFLAGS_TF)
clear_tsk_thread_flag(child, TIF_FORCED_TF);
else if (test_tsk_thread_flag(child, TIF_FORCED_TF))
value |= X86_EFLAGS_TF;
value |= regs->flags & ~FLAG_MASK;
break;
case offsetof(struct user_regs_struct,cs):
if ((value & 3) != 3)
return -EIO;
value &= 0xffff;
break;
}
*pt_regs_access(regs, regno) = value;
return 0;
}
static unsigned long getreg(struct task_struct *child, unsigned long regno)
{
struct pt_regs *regs = task_pt_regs(child);
unsigned long val;
unsigned int seg;
switch (regno) {
case offsetof(struct user_regs_struct, fs):
if (child == current) {
/* Older gas can't assemble movq %?s,%r?? */
asm("movl %%fs,%0" : "=r" (seg));
return seg;
}
return child->thread.fsindex;
case offsetof(struct user_regs_struct, gs):
if (child == current) {
asm("movl %%gs,%0" : "=r" (seg));
return seg;
}
return child->thread.gsindex;
case offsetof(struct user_regs_struct, ds):
if (child == current) {
asm("movl %%ds,%0" : "=r" (seg));
return seg;
}
return child->thread.ds;
case offsetof(struct user_regs_struct, es):
if (child == current) {
asm("movl %%es,%0" : "=r" (seg));
return seg;
}
return child->thread.es;
case offsetof(struct user_regs_struct, fs_base):
/*
* do_arch_prctl may have used a GDT slot instead of
* the MSR. To userland, it appears the same either
* way, except the %fs segment selector might not be 0.
*/
if (child->thread.fs != 0)
return child->thread.fs;
seg = child->thread.fsindex;
if (child == current)
asm("movl %%fs,%0" : "=r" (seg));
if (seg != FS_TLS_SEL)
return 0;
return get_desc_base(&child->thread.tls_array[FS_TLS]);
case offsetof(struct user_regs_struct, gs_base):
/*
* Exactly the same here as the %fs handling above.
*/
if (child->thread.gs != 0)
return child->thread.gs;
seg = child->thread.gsindex;
if (child == current)
asm("movl %%gs,%0" : "=r" (seg));
if (seg != GS_TLS_SEL)
return 0;
return get_desc_base(&child->thread.tls_array[GS_TLS]);
case offsetof(struct user_regs_struct, flags):
/*
* If the debugger set TF, hide it from the readout.
*/
val = regs->flags;
if (test_tsk_thread_flag(child, TIF_IA32))
val &= 0xffffffff;
if (test_tsk_thread_flag(child, TIF_FORCED_TF))
val &= ~X86_EFLAGS_TF;
return val;
default:
val = *pt_regs_access(regs, regno);
if (test_tsk_thread_flag(child, TIF_IA32))
val &= 0xffffffff;
return val;
}
}
unsigned long ptrace_get_debugreg(struct task_struct *child, int n)
{
switch (n) {
case 0: return child->thread.debugreg0;
case 1: return child->thread.debugreg1;
case 2: return child->thread.debugreg2;
case 3: return child->thread.debugreg3;
case 6: return child->thread.debugreg6;
case 7: return child->thread.debugreg7;
}
return 0;
}
int ptrace_set_debugreg(struct task_struct *child, int n, unsigned long data)
{
int i;
if (n < 4) {
int dsize = test_tsk_thread_flag(child, TIF_IA32) ? 3 : 7;
if (unlikely(data >= TASK_SIZE_OF(child) - dsize))
return -EIO;
}
switch (n) {
case 0: child->thread.debugreg0 = data; break;
case 1: child->thread.debugreg1 = data; break;
case 2: child->thread.debugreg2 = data; break;
case 3: child->thread.debugreg3 = data; break;
case 6:
if (data >> 32)
return -EIO;
child->thread.debugreg6 = data;
break;
case 7:
/*
* See ptrace_32.c for an explanation of this awkward check.
*/
data &= ~DR_CONTROL_RESERVED;
for (i = 0; i < 4; i++)
if ((0x5554 >> ((data >> (16 + 4*i)) & 0xf)) & 1)
return -EIO;
child->thread.debugreg7 = data;
if (data)
set_tsk_thread_flag(child, TIF_DEBUG);
else
clear_tsk_thread_flag(child, TIF_DEBUG);
break;
}
return 0;
}
long arch_ptrace(struct task_struct *child, long request, long addr, long data)
{
long ret;
unsigned ui;
switch (request) {
/* when I and D space are separate, these will need to be fixed. */
case PTRACE_PEEKTEXT: /* read word at location addr. */
case PTRACE_PEEKDATA:
ret = generic_ptrace_peekdata(child, addr, data);
break;
/* read the word at location addr in the USER area. */
case PTRACE_PEEKUSR: {
unsigned long tmp;
ret = -EIO;
if ((addr & 7) ||
addr > sizeof(struct user) - 7)
break;
tmp = 0;
if (addr < sizeof(struct user_regs_struct))
tmp = getreg(child, addr);
else if (addr >= offsetof(struct user, u_debugreg[0])) {
addr -= offsetof(struct user, u_debugreg[0]);
tmp = ptrace_get_debugreg(child, addr / sizeof(long));
}
ret = put_user(tmp,(unsigned long __user *) data);
break;
}
/* when I and D space are separate, this will have to be fixed. */
case PTRACE_POKETEXT: /* write the word at location addr. */
case PTRACE_POKEDATA:
ret = generic_ptrace_pokedata(child, addr, data);
break;
case PTRACE_POKEUSR: /* write the word at location addr in the USER area */
ret = -EIO;
if ((addr & 7) ||
addr > sizeof(struct user) - 7)
break;
if (addr < sizeof(struct user_regs_struct))
ret = putreg(child, addr, data);
else if (addr >= offsetof(struct user, u_debugreg[0])) {
addr -= offsetof(struct user, u_debugreg[0]);
ret = ptrace_set_debugreg(child,
addr / sizeof(long), data);
}
break;
#ifdef CONFIG_IA32_EMULATION
/* This makes only sense with 32bit programs. Allow a
64bit debugger to fully examine them too. Better
don't use it against 64bit processes, use
PTRACE_ARCH_PRCTL instead. */
case PTRACE_GET_THREAD_AREA:
if (addr < 0)
return -EIO;
ret = do_get_thread_area(child, addr,
(struct user_desc __user *) data);
break;
case PTRACE_SET_THREAD_AREA:
if (addr < 0)
return -EIO;
ret = do_set_thread_area(child, addr,
(struct user_desc __user *) data, 0);
break;
#endif
/* normal 64bit interface to access TLS data.
Works just like arch_prctl, except that the arguments
are reversed. */
case PTRACE_ARCH_PRCTL:
ret = do_arch_prctl(child, data, addr);
break;
case PTRACE_GETREGS: { /* Get all gp regs from the child. */
if (!access_ok(VERIFY_WRITE, (unsigned __user *)data,
sizeof(struct user_regs_struct))) {
ret = -EIO;
break;
}
ret = 0;
for (ui = 0; ui < sizeof(struct user_regs_struct); ui += sizeof(long)) {
ret |= __put_user(getreg(child, ui),(unsigned long __user *) data);
data += sizeof(long);
}
break;
}
case PTRACE_SETREGS: { /* Set all gp regs in the child. */
unsigned long tmp;
if (!access_ok(VERIFY_READ, (unsigned __user *)data,
sizeof(struct user_regs_struct))) {
ret = -EIO;
break;
}
ret = 0;
for (ui = 0; ui < sizeof(struct user_regs_struct); ui += sizeof(long)) {
ret = __get_user(tmp, (unsigned long __user *) data);
if (ret)
break;
ret = putreg(child, ui, tmp);
if (ret)
break;
data += sizeof(long);
}
break;
}
case PTRACE_GETFPREGS: { /* Get the child extended FPU state. */
if (!access_ok(VERIFY_WRITE, (unsigned __user *)data,
sizeof(struct user_i387_struct))) {
ret = -EIO;
break;
}
ret = get_fpregs((struct user_i387_struct __user *)data, child);
break;
}
case PTRACE_SETFPREGS: { /* Set the child extended FPU state. */
if (!access_ok(VERIFY_READ, (unsigned __user *)data,
sizeof(struct user_i387_struct))) {
ret = -EIO;
break;
}
set_stopped_child_used_math(child);
ret = set_fpregs(child, (struct user_i387_struct __user *)data);
break;
}
default:
ret = ptrace_request(child, request, addr, data);
break;
}
return ret;
}
static void syscall_trace(struct pt_regs *regs)
{
#if 0
printk("trace %s ip %lx sp %lx ax %d origrax %d caller %lx tiflags %x ptrace %x\n",
current->comm,
regs->ip, regs->sp, regs->ax, regs->orig_ax, __builtin_return_address(0),
current_thread_info()->flags, current->ptrace);
#endif
ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
? 0x80 : 0));
/*
* this isn't the same as continuing with a signal, but it will do
* for normal use. strace only continues with a signal if the
* stopping signal is not SIGTRAP. -brl
*/
if (current->exit_code) {
send_sig(current->exit_code, current, 1);
current->exit_code = 0;
}
}
asmlinkage void syscall_trace_enter(struct pt_regs *regs)
{
/* do the secure computing check first */
secure_computing(regs->orig_ax);
if (test_thread_flag(TIF_SYSCALL_TRACE)
&& (current->ptrace & PT_PTRACED))
syscall_trace(regs);
if (unlikely(current->audit_context)) {
if (test_thread_flag(TIF_IA32)) {
audit_syscall_entry(AUDIT_ARCH_I386,
regs->orig_ax,
regs->bx, regs->cx,
regs->dx, regs->si);
} else {
audit_syscall_entry(AUDIT_ARCH_X86_64,
regs->orig_ax,
regs->di, regs->si,
regs->dx, regs->r10);
}
}
}
asmlinkage void syscall_trace_leave(struct pt_regs *regs)
{
if (unlikely(current->audit_context))
audit_syscall_exit(AUDITSC_RESULT(regs->ax), regs->ax);
if ((test_thread_flag(TIF_SYSCALL_TRACE)
|| test_thread_flag(TIF_SINGLESTEP))
&& (current->ptrace & PT_PTRACED))
syscall_trace(regs);
}
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