Messages in this thread Patch in this message | | | Date | Tue, 12 Jun 2007 00:40:43 +0400 | From | Alexey Dobriyan <> | Subject | [PATCH 2/2] PTRACE_POKEDATA consolidation |
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Identical implementations of PTRACE_POKEDATA go into simple_ptrace_pokedata() function.
AFAICS, fix bug on xtensa where successful PTRACE_POKEDATA will nevertheless return EPERM.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> ---
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(-)
--- 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 = simple_ptrace_pokedata(child, addr, data); break; case PTRACE_POKEUSR: /* write the specified register */ --- 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 = simple_ptrace_pokedata(child, addr, data); break; case PTRACE_POKEUSR: --- 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 = simple_ptrace_pokedata(child, addr, data); break; case PTRACE_POKEUSR: --- 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 = simple_ptrace_pokedata(child, addr, data); break; case PTRACE_POKEUSR: --- 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 = simple_ptrace_pokedata(child, addr, data); break; /* Write the word at location address in the USER area. */ --- 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 = simple_ptrace_pokedata(child, addr, data); break; /* Write the word at location address in the USER area. */ --- 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 = simple_ptrace_pokedata(child, addr, data); break; case PTRACE_POKEUSR: /* write the word at location addr in the USER area */ --- 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 = simple_ptrace_pokedata(child, addr, data); break; case PTRACE_POKEUSR: /* write the word at location addr in the USER area */ --- 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 = simple_ptrace_pokedata(child, addr, data); break; case PTRACE_POKEUSR: /* write the word at location addr in the USER area */ --- 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 = simple_ptrace_pokedata(child, addr, data); + if (ret == 0 && request == PTRACE_POKETEXT) + invalidate_cache(); break; /* --- 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 = simple_ptrace_pokedata(child, addr, data); break; case PTRACE_POKEUSR: /* write the word at location addr in the USER area */ --- 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 = simple_ptrace_pokedata(child, addr, data); break; case PTRACE_POKEUSR: /* write the word at location addr in the USER area */ --- 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 = simple_ptrace_pokedata(child, addr, data); break; case PTRACE_POKEUSR: { --- a/arch/powerpc/kernel/ptrace.c +++ b/arch/powerpc/kernel/ptrace.c @@ -292,11 +292,7 @@ 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 = simple_ptrace_pokedata(child, addr, data); break; /* write the word at location addr in the USER area */ --- 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 simple_ptrace_pokedata(child, addr, data); case PTRACE_POKEUSR: /* write the word at location addr in the USER area */ --- a/arch/sh/kernel/ptrace.c +++ b/arch/sh/kernel/ptrace.c @@ -127,10 +127,7 @@ 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 = simple_ptrace_pokedata(child, addr, data); break; case PTRACE_POKEUSR: /* write the word at location addr in the USER area */ --- 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 = simple_ptrace_pokedata(child, addr, data); break; case PTRACE_POKEUSR: --- 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 = simple_ptrace_pokedata(child, addr, data); break; case PTRACE_POKEUSR: /* write the word at location addr in the USER area */ --- 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 = simple_ptrace_pokedata(child, addr, data); goto out; /* Read/write the word at location ADDR in the registers. */ --- 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 = simple_ptrace_pokedata(child, addr, data); break; case PTRACE_POKEUSR: /* write the word at location addr in the USER area */ --- 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 = simple_ptrace_pokedata(child, addr, data); goto out; case PTRACE_POKEUSR: --- a/include/linux/ptrace.h +++ b/include/linux/ptrace.h @@ -111,6 +111,7 @@ static inline void ptrace_unlink(struct task_struct *child) } int simple_ptrace_peekdata(struct task_struct *tsk, long addr, long data); +int simple_ptrace_pokedata(struct task_struct *tsk, long addr, long data); #ifndef force_successful_syscall_return /* --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -502,3 +502,11 @@ int simple_ptrace_peekdata(struct task_struct *tsk, long addr, long data) return -EIO; return put_user(tmp, (unsigned long __user *)data); } + +int simple_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; +} - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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