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PTRACE_PEEKDATA consolidation

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Identical implementations of PTRACE_PEEKDATA go into generic_ptrace_peekdata()
function.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alexey Dobriyan 2007-07-17 04:03:43 -07:00 committed by Linus Torvalds
parent bcdcd8e725
commit 7664732315
21 changed files with 43 additions and 166 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
arch/arm/kernel/ptrace.c
View File

@ -657,7 +657,6 @@ static int ptrace_setcrunchregs(struct task_struct *tsk, void __user *ufp)
long arch_ptrace(struct task_struct *child, long request, long addr, long data)
{
unsigned long tmp;
int ret;
switch (request) {
@ -666,12 +665,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
*/
case PTRACE_PEEKTEXT:
case PTRACE_PEEKDATA:
ret = access_process_vm(child, addr, &tmp,
sizeof(unsigned long), 0);
if (ret == sizeof(unsigned long))
ret = put_user(tmp, (unsigned long __user *) data);
else
ret = -EIO;
ret = generic_ptrace_peekdata(child, addr, data);
break;
case PTRACE_PEEKUSR:

8
arch/arm26/kernel/ptrace.c
View File

@ -531,7 +531,6 @@ static int ptrace_setfpregs(struct task_struct *tsk, void *ufp)
long arch_ptrace(struct task_struct *child, long request, long addr, long data)
{
unsigned long tmp;
int ret;
switch (request) {
@ -540,12 +539,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
*/
case PTRACE_PEEKTEXT:
case PTRACE_PEEKDATA:
ret = access_process_vm(child, addr, &tmp,
sizeof(unsigned long), 0);
if (ret == sizeof(unsigned long))
ret = put_user(tmp, (unsigned long *) data);
else
ret = -EIO;
ret = generic_ptrace_peekdata(child, addr, data);
break;
case PTRACE_PEEKUSR:

7
arch/avr32/kernel/ptrace.c
View File

@ -153,7 +153,6 @@ static int ptrace_setregs(struct task_struct *tsk, const void __user *uregs)
long arch_ptrace(struct task_struct *child, long request, long addr, long data)
{
unsigned long tmp;
int ret;
pr_debug("arch_ptrace(%ld, %d, %#lx, %#lx)\n",
@ -166,11 +165,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
/* Read the word at location addr in the child process */
case PTRACE_PEEKTEXT:
case PTRACE_PEEKDATA:
ret = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
if (ret == sizeof(tmp))
ret = put_user(tmp, (unsigned long __user *)data);
else
ret = -EIO;
ret = generic_ptrace_peekdata(child, addr, data);
break;
case PTRACE_PEEKUSR:

14
arch/cris/arch-v10/kernel/ptrace.c
View File

@ -83,19 +83,9 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
switch (request) {
/* Read word at location address. */
case PTRACE_PEEKTEXT:
case PTRACE_PEEKDATA: {
unsigned long tmp;
int copied;
copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
ret = -EIO;
if (copied != sizeof(tmp))
break;
ret = put_user(tmp,datap);
case PTRACE_PEEKDATA:
ret = generic_ptrace_peekdata(child, addr, data);
break;
}
/* Read the word at location address in the USER area. */
case PTRACE_PEEKUSR: {

12
arch/frv/kernel/ptrace.c
View File

@ -112,20 +112,12 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
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: {
int copied;
case PTRACE_PEEKDATA:
ret = -EIO;
if (is_user_addr_valid(child, addr, sizeof(tmp)) < 0)
break;
copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
if (copied != sizeof(tmp))
break;
ret = put_user(tmp,(unsigned long *) data);
ret = generic_ptrace_peekdata(child, addr, data);
break;
}
/* read the word at location addr in the USER area. */
case PTRACE_PEEKUSR: {

12
arch/i386/kernel/ptrace.c
View File

@ -358,17 +358,9 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
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: {
unsigned long tmp;
int copied;
copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
ret = -EIO;
if (copied != sizeof(tmp))
break;
ret = put_user(tmp, datap);
case PTRACE_PEEKDATA:
ret = generic_ptrace_peekdata(child, addr, data);
break;
}
/* read the word at location addr in the USER area. */
case PTRACE_PEEKUSR: {

7
arch/m32r/kernel/ptrace.c
View File

@ -595,7 +595,6 @@ void ptrace_disable(struct task_struct *child)
static int
do_ptrace(long request, struct task_struct *child, long addr, long data)
{
unsigned long tmp;
int ret;
switch (request) {
@ -604,11 +603,7 @@ do_ptrace(long request, struct task_struct *child, long addr, long data)
*/
case PTRACE_PEEKTEXT:
case PTRACE_PEEKDATA:
ret = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
if (ret == sizeof(tmp))
ret = put_user(tmp,(unsigned long __user *) data);
else
ret = -EIO;
ret = generic_ptrace_peekdata(child, addr, data);
break;
/*

5
arch/m68k/kernel/ptrace.c
View File

@ -128,10 +128,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
/* when I and D space are separate, these will need to be fixed. */
case PTRACE_PEEKTEXT: /* read word at location addr. */
case PTRACE_PEEKDATA:
i = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
if (i != sizeof(tmp))
goto out_eio;
ret = put_user(tmp, (unsigned long *)data);
ret = generic_ptrace_peekdata(child, addr, data);
break;
/* read the word at location addr in the USER area. */

12
arch/m68knommu/kernel/ptrace.c
View File

@ -106,17 +106,9 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
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: {
unsigned long tmp;
int copied;
copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
ret = -EIO;
if (copied != sizeof(tmp))
break;
ret = put_user(tmp,(unsigned long *) data);
case PTRACE_PEEKDATA:
ret = generic_ptrace_peekdata(child, addr, data);
break;
}
/* read the word at location addr in the USER area. */
case PTRACE_PEEKUSR: {

12
arch/mips/kernel/ptrace.c
View File

@ -174,17 +174,9 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
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: {
unsigned long tmp;
int copied;
copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
ret = -EIO;
if (copied != sizeof(tmp))
break;
ret = put_user(tmp,(unsigned long __user *) data);
case PTRACE_PEEKDATA:
ret = generic_ptrace_peekdata(child, addr, data);
break;
}
/* Read the word at location addr in the USER area. */
case PTRACE_PEEKUSR: {

13
arch/parisc/kernel/ptrace.c
View File

@ -87,10 +87,9 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
switch (request) {
case PTRACE_PEEKTEXT: /* read word at location addr. */
case PTRACE_PEEKDATA: {
int copied;
#ifdef CONFIG_64BIT
if (__is_compat_task(child)) {
int copied;
unsigned int tmp;
addr &= 0xffffffffL;
@ -105,15 +104,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
}
else
#endif
{
unsigned long tmp;
copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
ret = -EIO;
if (copied != sizeof(tmp))
goto out_tsk;
ret = put_user(tmp,(unsigned long *) data);
}
ret = generic_ptrace_peekdata(child, addr, data);
goto out_tsk;
}

12
arch/powerpc/kernel/ptrace.c
View File

@ -379,17 +379,9 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
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: {
unsigned long tmp;
int copied;
copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
ret = -EIO;
if (copied != sizeof(tmp))
break;
ret = put_user(tmp,(unsigned long __user *) data);
case PTRACE_PEEKDATA:
ret = generic_ptrace_peekdata(child, addr, data);
break;
}
/* read the word at location addr in the USER area. */
case PTRACE_PEEKUSR: {

6
arch/s390/kernel/ptrace.c
View File

@ -294,7 +294,6 @@ poke_user(struct task_struct *child, addr_t addr, addr_t data)
static int
do_ptrace_normal(struct task_struct *child, long request, long addr, long data)
{
unsigned long tmp;
ptrace_area parea;
int copied, ret;
@ -304,10 +303,7 @@ do_ptrace_normal(struct task_struct *child, long request, long addr, long data)
/* Remove high order bit from address (only for 31 bit). */
addr &= PSW_ADDR_INSN;
/* read word at location addr. */
copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
if (copied != sizeof(tmp))
return -EIO;
return put_user(tmp, (unsigned long __force __user *) data);
return generic_ptrace_peekdata(child, addr, data);
case PTRACE_PEEKUSR:
/* read the word at location addr in the USER area. */

13
arch/sh/kernel/ptrace.c
View File

@ -91,17 +91,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
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: {
unsigned long tmp;
int copied;
copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
ret = -EIO;
if (copied != sizeof(tmp))
break;
ret = put_user(tmp,(unsigned long __user *) data);
break;
}
case PTRACE_PEEKDATA:
ret = generic_ptrace_peekdata(child, addr, data);
/* read the word at location addr in the USER area. */
case PTRACE_PEEKUSR: {

12
arch/sh64/kernel/ptrace.c
View File

@ -129,17 +129,9 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
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: {
unsigned long tmp;
int copied;
copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
ret = -EIO;
if (copied != sizeof(tmp))
break;
ret = put_user(tmp,(unsigned long *) data);
case PTRACE_PEEKDATA:
ret = generic_ptrace_peekdata(child, addr, data);
break;
}
/* read the word at location addr in the USER area. */
case PTRACE_PEEKUSR: {

12
arch/um/kernel/ptrace.c
View File

@ -52,17 +52,9 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
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: {
unsigned long tmp;
int copied;
ret = -EIO;
copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
if (copied != sizeof(tmp))
break;
ret = put_user(tmp, p);
case PTRACE_PEEKDATA:
ret = generic_ptrace_peekdata(child, addr, data);
break;
}
/* read the word at location addr in the USER area. */
case PTRACE_PEEKUSR:

8
arch/v850/kernel/ptrace.c
View File

@ -117,15 +117,11 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
int rval;
switch (request) {
unsigned long val, copied;
unsigned long val;
case PTRACE_PEEKTEXT: /* read word at location addr. */
case PTRACE_PEEKDATA:
copied = access_process_vm(child, addr, &val, sizeof(val), 0);
rval = -EIO;
if (copied != sizeof(val))
break;
rval = put_user(val, (unsigned long *)data);
rval = generic_ptrace_peekdata(child, addr, data);
goto out;
case PTRACE_POKETEXT: /* write the word at location addr. */

12
arch/x86_64/kernel/ptrace.c
View File

@ -313,17 +313,9 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
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: {
unsigned long tmp;
int copied;
copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
ret = -EIO;
if (copied != sizeof(tmp))
break;
ret = put_user(tmp,(unsigned long __user *) data);
case PTRACE_PEEKDATA:
ret = generic_ptrace_peekdata(child, addr, data);
break;
}
/* read the word at location addr in the USER area. */
case PTRACE_PEEKUSR: {

12
arch/xtensa/kernel/ptrace.c
View File

@ -50,18 +50,8 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
switch (request) {
case PTRACE_PEEKTEXT: /* read word at location addr. */
case PTRACE_PEEKDATA:
{
unsigned long tmp;
int copied;
copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
ret = -EIO;
if (copied != sizeof(tmp))
break;
ret = put_user(tmp,(unsigned long *) data);
ret = generic_ptrace_peekdata(child, addr, data);
goto out;
}
/* Read the word at location addr in the USER area. */

1
include/linux/ptrace.h
View File

@ -110,6 +110,7 @@ static inline void ptrace_unlink(struct task_struct *child)
__ptrace_unlink(child);
}
int generic_ptrace_peekdata(struct task_struct *tsk, long addr, long data);
#ifndef force_successful_syscall_return
/*

11
kernel/ptrace.c
View File

@ -490,3 +490,14 @@ asmlinkage long sys_ptrace(long request, long pid, long addr, long data)
return ret;
}
#endif /* __ARCH_SYS_PTRACE */
int generic_ptrace_peekdata(struct task_struct *tsk, long addr, long data)
{
unsigned long tmp;
int copied;
copied = access_process_vm(tsk, addr, &tmp, sizeof(tmp), 0);
if (copied != sizeof(tmp))
return -EIO;
return put_user(tmp, (unsigned long __user *)data);
}