Commit 76647323 authored by Alexey Dobriyan's avatar Alexey Dobriyan Committed by Linus Torvalds
Browse files

PTRACE_PEEKDATA consolidation



Identical implementations of PTRACE_PEEKDATA go into generic_ptrace_peekdata()
function.
Signed-off-by: default avatarAlexey Dobriyan <adobriyan@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent bcdcd8e7
......@@ -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:
......
......@@ -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:
......
......@@ -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:
......
......@@ -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: {
......
......@@ -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: {
......
......@@ -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: {
......
......@@ -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;
/*
......
......@@ -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. */
......
......@@ -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: {
......
......@@ -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: {
......
......@@ -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;
}
......
......@@ -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: {
......
......@@ -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. */
......
......@@ -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: {
......
......@@ -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: {
......
......@@ -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:
......
......@@ -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. */
......
......@@ -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: {
......
......@@ -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. */
......
......@@ -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
/*
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment