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| author | Roland McGrath <roland@redhat.com> | 2008-01-30 13:30:46 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:30:46 +0100 |
| commit | efd1ca52d04d2f6df337a3332cee56cd60e6d4c4 (patch) | |
| tree | cf1e630d25cc45f399388f5fc996d86cf3bcf9ff /arch/x86/kernel/ptrace_64.c | |
| parent | 13abd0e50433092c41551bc13c32268028b6d663 (diff) | |
| download | op-kernel-dev-efd1ca52d04d2f6df337a3332cee56cd60e6d4c4.zip op-kernel-dev-efd1ca52d04d2f6df337a3332cee56cd60e6d4c4.tar.gz | |
x86: TLS cleanup
This consolidates the four different places that implemented the same
encoding magic for the GDT-slot 32-bit TLS support. The old tls32.c was
renamed and is now only slightly modified to be the shared implementation.
Signed-off-by: Roland McGrath <roland@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Zachary Amsden <zach@vmware.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/ptrace_64.c')
| -rw-r--r-- | arch/x86/kernel/ptrace_64.c | 26 |
1 files changed, 11 insertions, 15 deletions
diff --git a/arch/x86/kernel/ptrace_64.c b/arch/x86/kernel/ptrace_64.c index 1edece3..375fadc 100644 --- a/arch/x86/kernel/ptrace_64.c +++ b/arch/x86/kernel/ptrace_64.c @@ -474,23 +474,19 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) 64bit debugger to fully examine them too. Better don't use it against 64bit processes, use PTRACE_ARCH_PRCTL instead. */ - case PTRACE_SET_THREAD_AREA: { - struct user_desc __user *p; - int old; - p = (struct user_desc __user *)data; - get_user(old, &p->entry_number); - put_user(addr, &p->entry_number); - ret = do_set_thread_area(&child->thread, p); - put_user(old, &p->entry_number); - break; case PTRACE_GET_THREAD_AREA: - p = (struct user_desc __user *)data; - get_user(old, &p->entry_number); - put_user(addr, &p->entry_number); - ret = do_get_thread_area(&child->thread, p); - put_user(old, &p->entry_number); + 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 |
