Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f284ce7269031947326bac6bb19a977705276222
Commit: f284ce7269031947326bac6bb19a977705276222
Parent: 7664732315c97f48dba9d1e7339ad16fc5a320ac
Author: Alexey Dobriyan <[EMAIL PROTECTED]>
AuthorDate: Tue Jul 17 04:03:44 2007 -0700
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Tue Jul 17 10:23:03 2007 -0700
PTRACE_POKEDATA consolidation
Identical implementations of PTRACE_POKEDATA go into
generic_ptrace_pokedata()
function.
AFAICS, fix bug on xtensa where successful PTRACE_POKEDATA will nevertheless
return EPERM.
Signed-off-by: Alexey Dobriyan <[EMAIL PROTECTED]>
Cc: Christoph Hellwig <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
arch/alpha/kernel/ptrace.c | 4 +---
arch/arm/kernel/ptrace.c | 7 +------
arch/arm26/kernel/ptrace.c | 7 +------
arch/avr32/kernel/ptrace.c | 6 +-----
arch/cris/arch-v10/kernel/ptrace.c | 7 +------
arch/cris/arch-v32/kernel/ptrace.c | 7 +------
arch/frv/kernel/ptrace.c | 4 +---
arch/h8300/kernel/ptrace.c | 5 +----
arch/i386/kernel/ptrace.c | 5 +----
arch/m32r/kernel/ptrace.c | 12 +++---------
arch/m68k/kernel/ptrace.c | 3 +--
arch/m68knommu/kernel/ptrace.c | 5 +----
arch/mips/kernel/ptrace.c | 6 +-----
arch/powerpc/kernel/ptrace.c | 6 +-----
arch/s390/kernel/ptrace.c | 5 +----
arch/sh/kernel/ptrace.c | 5 +----
arch/sh64/kernel/ptrace.c | 5 +----
arch/um/kernel/ptrace.c | 6 +-----
arch/v850/kernel/ptrace.c | 6 +-----
arch/x86_64/kernel/ptrace.c | 5 +----
arch/xtensa/kernel/ptrace.c | 5 +----
include/linux/ptrace.h | 1 +
kernel/ptrace.c | 8 ++++++++
23 files changed, 32 insertions(+), 98 deletions(-)
diff --git a/arch/alpha/kernel/ptrace.c b/arch/alpha/kernel/ptrace.c
index 0cd0605..83a7818 100644
--- a/arch/alpha/kernel/ptrace.c
+++ b/arch/alpha/kernel/ptrace.c
@@ -315,9 +315,7 @@ do_sys_ptrace(long request, long pid, long addr, long data,
/* 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:
- tmp = data;
- copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 1);
- ret = (copied == sizeof(tmp)) ? 0 : -EIO;
+ ret = generic_ptrace_pokedata(child, addr, data);
break;
case PTRACE_POKEUSR: /* write the specified register */
diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index 9a5d975..78c9f1a 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -677,12 +677,7 @@ long arch_ptrace(struct task_struct *child, long request,
long addr, long data)
*/
case PTRACE_POKETEXT:
case PTRACE_POKEDATA:
- ret = access_process_vm(child, addr, &data,
- sizeof(unsigned long), 1);
- if (ret == sizeof(unsigned long))
- ret = 0;
- else
- ret = -EIO;
+ ret = generic_ptrace_pokedata(child, addr, data);
break;
case PTRACE_POKEUSR:
diff --git a/arch/arm26/kernel/ptrace.c b/arch/arm26/kernel/ptrace.c
index 0d0ead0..0fefb86 100644
--- a/arch/arm26/kernel/ptrace.c
+++ b/arch/arm26/kernel/ptrace.c
@@ -551,12 +551,7 @@ long arch_ptrace(struct task_struct *child, long request,
long addr, long data)
*/
case PTRACE_POKETEXT:
case PTRACE_POKEDATA:
- ret = access_process_vm(child, addr, &data,
- sizeof(unsigned long), 1);
- if (ret == sizeof(unsigned long))
- ret = 0;
- else
- ret = -EIO;
+ ret = generic_ptrace_pokedata(child, addr, data);
break;
case PTRACE_POKEUSR:
diff --git a/arch/avr32/kernel/ptrace.c b/arch/avr32/kernel/ptrace.c
index 1043fdc..39060cb 100644
--- a/arch/avr32/kernel/ptrace.c
+++ b/arch/avr32/kernel/ptrace.c
@@ -176,11 +176,7 @@ long arch_ptrace(struct task_struct *child, long request,
long addr, long data)
/* Write the word in data at location addr */
case PTRACE_POKETEXT:
case PTRACE_POKEDATA:
- ret = access_process_vm(child, addr, &data, sizeof(data), 1);
- if (ret == sizeof(data))
- ret = 0;
- else
- ret = -EIO;
+ ret = generic_ptrace_pokedata(child, addr, data);
break;
case PTRACE_POKEUSR:
diff --git a/arch/cris/arch-v10/kernel/ptrace.c
b/arch/cris/arch-v10/kernel/ptrace.c
index 74b1b4d..f4f9db6 100644
--- a/arch/cris/arch-v10/kernel/ptrace.c
+++ b/arch/cris/arch-v10/kernel/ptrace.c
@@ -103,12 +103,7 @@ long arch_ptrace(struct task_struct *child, long request,
long addr, long data)
/* Write the word at location address. */
case PTRACE_POKETEXT:
case PTRACE_POKEDATA:
- ret = 0;
-
- if (access_process_vm(child, addr, &data, sizeof(data),
1) == sizeof(data))
- break;
-
- ret = -EIO;
+ ret = generic_ptrace_pokedata(child, addr, data);
break;
/* Write the word at location address in the USER area. */
diff --git a/arch/cris/arch-v32/kernel/ptrace.c
b/arch/cris/arch-v32/kernel/ptrace.c
index d4d57b7..38ece0c 100644
--- a/arch/cris/arch-v32/kernel/ptrace.c
+++ b/arch/cris/arch-v32/kernel/ptrace.c
@@ -146,12 +146,7 @@ long arch_ptrace(struct task_struct *child, long request,
long addr, long data)
/* Write the word at location address. */
case PTRACE_POKETEXT:
case PTRACE_POKEDATA:
- ret = 0;
-
- if (access_process_vm(child, addr, &data, sizeof(data),
1) == sizeof(data))
- break;
-
- ret = -EIO;
+ ret = generic_ptrace_pokedata(child, addr, data);
break;
/* Write the word at location address in the USER area. */
diff --git a/arch/frv/kernel/ptrace.c b/arch/frv/kernel/ptrace.c
index a10f309..709e9bd 100644
--- a/arch/frv/kernel/ptrace.c
+++ b/arch/frv/kernel/ptrace.c
@@ -168,9 +168,7 @@ long arch_ptrace(struct task_struct *child, long request,
long addr, long data)
ret = -EIO;
if (is_user_addr_valid(child, addr, sizeof(tmp)) < 0)
break;
- if (access_process_vm(child, addr, &data, sizeof(data), 1) !=
sizeof(data))
- break;
- ret = 0;
+ ret = generic_ptrace_pokedata(child, addr, data);
break;
case PTRACE_POKEUSR: /* write the word at location addr in the USER
area */
diff --git a/arch/h8300/kernel/ptrace.c b/arch/h8300/kernel/ptrace.c
index 8a7a991..d32bbf0 100644
--- a/arch/h8300/kernel/ptrace.c
+++ b/arch/h8300/kernel/ptrace.c
@@ -111,10 +111,7 @@ long arch_ptrace(struct task_struct *child, long request,
long addr, long data)
/* 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 = 0;
- if (access_process_vm(child, addr, &data, sizeof(data),
1) == sizeof(data))
- break;
- ret = -EIO;
+ ret = generic_ptrace_pokedata(child, addr, data);
break;
case PTRACE_POKEUSR: /* write the word at location addr in the
USER area */
diff --git a/arch/i386/kernel/ptrace.c b/arch/i386/kernel/ptrace.c
index f4bcf1d..1c075f5 100644
--- a/arch/i386/kernel/ptrace.c
+++ b/arch/i386/kernel/ptrace.c
@@ -387,10 +387,7 @@ long arch_ptrace(struct task_struct *child, long request,
long addr, long data)
/* 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 = 0;
- if (access_process_vm(child, addr, &data, sizeof(data), 1) ==
sizeof(data))
- break;
- ret = -EIO;
+ ret = generic_ptrace_pokedata(child, addr, data);
break;
case PTRACE_POKEUSR: /* write the word at location addr in the USER
area */
diff --git a/arch/m32r/kernel/ptrace.c b/arch/m32r/kernel/ptrace.c
index 01a1c9a..57a92ef 100644
--- a/arch/m32r/kernel/ptrace.c
+++ b/arch/m32r/kernel/ptrace.c
@@ -619,15 +619,9 @@ do_ptrace(long request, struct task_struct *child, long
addr, long data)
*/
case PTRACE_POKETEXT:
case PTRACE_POKEDATA:
- ret = access_process_vm(child, addr, &data, sizeof(data), 1);
- if (ret == sizeof(data)) {
- ret = 0;
- if (request == PTRACE_POKETEXT) {
- invalidate_cache();
- }
- } else {
- ret = -EIO;
- }
+ ret = generic_ptrace_pokedata(child, addr, data);
+ if (ret == 0 && request == PTRACE_POKETEXT)
+ invalidate_cache();
break;
/*
diff --git a/arch/m68k/kernel/ptrace.c b/arch/m68k/kernel/ptrace.c
index 01a3a09..2cf0690 100644
--- a/arch/m68k/kernel/ptrace.c
+++ b/arch/m68k/kernel/ptrace.c
@@ -157,8 +157,7 @@ long arch_ptrace(struct task_struct *child, long request,
long addr, long data)
/* 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:
- if (access_process_vm(child, addr, &data, sizeof(data), 1) !=
sizeof(data))
- goto out_eio;
+ ret = generic_ptrace_pokedata(child, addr, data);
break;
case PTRACE_POKEUSR: /* write the word at location addr in the USER
area */
diff --git a/arch/m68knommu/kernel/ptrace.c b/arch/m68knommu/kernel/ptrace.c
index f550e61..ef70ca0 100644
--- a/arch/m68knommu/kernel/ptrace.c
+++ b/arch/m68knommu/kernel/ptrace.c
@@ -151,10 +151,7 @@ long arch_ptrace(struct task_struct *child, long request,
long addr, long data)
/* 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 = 0;
- if (access_process_vm(child, addr, &data, sizeof(data),
1) == sizeof(data))
- break;
- ret = -EIO;
+ ret = generic_ptrace_pokedata(child, addr, data);
break;
case PTRACE_POKEUSR: /* write the word at location addr in the
USER area */
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index af9d0be..893e7bc 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -305,11 +305,7 @@ long arch_ptrace(struct task_struct *child, long request,
long addr, long data)
/* 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 = 0;
- if (access_process_vm(child, addr, &data, sizeof(data), 1)
- == sizeof(data))
- break;
- ret = -EIO;
+ ret = generic_ptrace_pokedata(child, addr, data);
break;
case PTRACE_POKEUSR: {
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index 581d427..8a177bd 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -413,11 +413,7 @@ long arch_ptrace(struct task_struct *child, long request,
long addr, long data)
/* If 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 = 0;
- if (access_process_vm(child, addr, &data, sizeof(data), 1)
- == sizeof(data))
- break;
- ret = -EIO;
+ ret = generic_ptrace_pokedata(child, addr, data);
break;
/* write the word at location addr in the USER area */
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 28afff4..f4503ca 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -314,10 +314,7 @@ 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;
/* write the word at location addr. */
- copied = access_process_vm(child, addr, &data, sizeof(data),1);
- if (copied != sizeof(data))
- return -EIO;
- return 0;
+ return generic_ptrace_pokedata(child, addr, data);
case PTRACE_POKEUSR:
/* write the word at location addr in the USER area */
diff --git a/arch/sh/kernel/ptrace.c b/arch/sh/kernel/ptrace.c
index f23f949..891d1d4 100644
--- a/arch/sh/kernel/ptrace.c
+++ b/arch/sh/kernel/ptrace.c
@@ -126,10 +126,7 @@ long arch_ptrace(struct task_struct *child, long request,
long addr, long data)
/* 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 = 0;
- if (access_process_vm(child, addr, &data, sizeof(data), 1) ==
sizeof(data))
- break;
- ret = -EIO;
+ ret = generic_ptrace_pokedata(child, addr, data);
break;
case PTRACE_POKEUSR: /* write the word at location addr in the USER
area */
diff --git a/arch/sh64/kernel/ptrace.c b/arch/sh64/kernel/ptrace.c
index 12340e4..df06c64 100644
--- a/arch/sh64/kernel/ptrace.c
+++ b/arch/sh64/kernel/ptrace.c
@@ -158,10 +158,7 @@ long arch_ptrace(struct task_struct *child, long request,
long addr, long data)
/* 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 = 0;
- if (access_process_vm(child, addr, &data, sizeof(data), 1) ==
sizeof(data))
- break;
- ret = -EIO;
+ ret = generic_ptrace_pokedata(child, addr, data);
break;
case PTRACE_POKEUSR:
diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c
index 1966da6..6916c88 100644
--- a/arch/um/kernel/ptrace.c
+++ b/arch/um/kernel/ptrace.c
@@ -64,11 +64,7 @@ long arch_ptrace(struct task_struct *child, long request,
long addr, long data)
/* 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 = -EIO;
- if (access_process_vm(child, addr, &data, sizeof(data),
- 1) != sizeof(data))
- break;
- ret = 0;
+ ret = generic_ptrace_pokedata(child, addr, data);
break;
case PTRACE_POKEUSR: /* write the word at location addr in the USER
area */
diff --git a/arch/v850/kernel/ptrace.c b/arch/v850/kernel/ptrace.c
index 3bedd14..a458ac9 100644
--- a/arch/v850/kernel/ptrace.c
+++ b/arch/v850/kernel/ptrace.c
@@ -126,11 +126,7 @@ long arch_ptrace(struct task_struct *child, long request,
long addr, long data)
case PTRACE_POKETEXT: /* write the word at location addr. */
case PTRACE_POKEDATA:
- rval = 0;
- if (access_process_vm(child, addr, &data, sizeof(data), 1)
- == sizeof(data))
- break;
- rval = -EIO;
+ rval = generic_ptrace_pokedata(child, addr, data);
goto out;
/* Read/write the word at location ADDR in the registers. */
diff --git a/arch/x86_64/kernel/ptrace.c b/arch/x86_64/kernel/ptrace.c
index 327ff93..fa6775e 100644
--- a/arch/x86_64/kernel/ptrace.c
+++ b/arch/x86_64/kernel/ptrace.c
@@ -359,10 +359,7 @@ long arch_ptrace(struct task_struct *child, long request,
long addr, long data)
/* 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 = 0;
- if (access_process_vm(child, addr, &data, sizeof(data), 1) ==
sizeof(data))
- break;
- ret = -EIO;
+ ret = generic_ptrace_pokedata(child, addr, data);
break;
case PTRACE_POKEUSR: /* write the word at location addr in the USER
area */
diff --git a/arch/xtensa/kernel/ptrace.c b/arch/xtensa/kernel/ptrace.c
index af182d3..06a13d9 100644
--- a/arch/xtensa/kernel/ptrace.c
+++ b/arch/xtensa/kernel/ptrace.c
@@ -128,10 +128,7 @@ long arch_ptrace(struct task_struct *child, long request,
long addr, long data)
case PTRACE_POKETEXT: /* write the word at location addr. */
case PTRACE_POKEDATA:
- if (access_process_vm(child, addr, &data, sizeof(data), 1)
- == sizeof(data))
- break;
- ret = -EIO;
+ ret = generic_ptrace_pokedata(child, addr, data);
goto out;
case PTRACE_POKEUSR:
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index 477cc8e..ae8146a 100644
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -111,6 +111,7 @@ static inline void ptrace_unlink(struct task_struct *child)
}
int generic_ptrace_peekdata(struct task_struct *tsk, long addr, long data);
+int generic_ptrace_pokedata(struct task_struct *tsk, long addr, long data);
#ifndef force_successful_syscall_return
/*
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 1653d35..4a1745f 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -501,3 +501,11 @@ int generic_ptrace_peekdata(struct task_struct *tsk, long
addr, long data)
return -EIO;
return put_user(tmp, (unsigned long __user *)data);
}
+
+int generic_ptrace_pokedata(struct task_struct *tsk, long addr, long data)
+{
+ int copied;
+
+ copied = access_process_vm(tsk, addr, &data, sizeof(data), 1);
+ return (copied == sizeof(data)) ? 0 : -EIO;
+}
-
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