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| author | Namhyung Kim <namhyung@gmail.com> | 2010-10-27 15:34:04 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-27 18:03:12 -0700 |
| commit | 0a3d763f1a68c97daae57e40c6d698986d1b38f4 (patch) | |
| tree | b88189bb89beadc12e414c27be08c26ad837dbbd | |
| parent | 8c0acac3676103113a2e259291a07c073ac07879 (diff) | |
| download | op-kernel-dev-0a3d763f1a68c97daae57e40c6d698986d1b38f4.zip op-kernel-dev-0a3d763f1a68c97daae57e40c6d698986d1b38f4.tar.gz | |
ptrace: cleanup arch_ptrace() on um
Remove unnecessary castings using void pointer and fix copy_to_user()
return value. Also add missing __user markup on the argument of
arch_ptrctl().
Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | arch/um/kernel/ptrace.c | 18 | ||||
| -rw-r--r-- | arch/um/sys-x86_64/ptrace.c | 7 |
2 files changed, 11 insertions, 14 deletions
diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c index 963d82b..a5e33f2 100644 --- a/arch/um/kernel/ptrace.c +++ b/arch/um/kernel/ptrace.c @@ -47,6 +47,7 @@ long arch_ptrace(struct task_struct *child, long request, { int i, ret; unsigned long __user *p = (void __user *)data; + void __user *vp = p; switch (request) { /* read word at location addr. */ @@ -108,24 +109,20 @@ long arch_ptrace(struct task_struct *child, long request, #endif #ifdef PTRACE_GETFPREGS case PTRACE_GETFPREGS: /* Get the child FPU state. */ - ret = get_fpregs((struct user_i387_struct __user *) data, - child); + ret = get_fpregs(vp, child); break; #endif #ifdef PTRACE_SETFPREGS case PTRACE_SETFPREGS: /* Set the child FPU state. */ - ret = set_fpregs((struct user_i387_struct __user *) data, - child); + ret = set_fpregs(vp, child); break; #endif case PTRACE_GET_THREAD_AREA: - ret = ptrace_get_thread_area(child, addr, - (struct user_desc __user *) data); + ret = ptrace_get_thread_area(child, addr, vp); break; case PTRACE_SET_THREAD_AREA: - ret = ptrace_set_thread_area(child, addr, - (struct user_desc __user *) data); + ret = ptrace_set_thread_area(child, addr, datavp); break; case PTRACE_FAULTINFO: { @@ -135,7 +132,8 @@ long arch_ptrace(struct task_struct *child, long request, * On i386, ptrace_faultinfo is smaller! */ ret = copy_to_user(p, &child->thread.arch.faultinfo, - sizeof(struct ptrace_faultinfo)); + sizeof(struct ptrace_faultinfo)) ? + -EIO : 0; break; } @@ -159,7 +157,7 @@ long arch_ptrace(struct task_struct *child, long request, #ifdef PTRACE_ARCH_PRCTL case PTRACE_ARCH_PRCTL: /* XXX Calls ptrace on the host - needs some SMP thinking */ - ret = arch_prctl(child, data, (void *) addr); + ret = arch_prctl(child, data, (void __user *) addr); break; #endif default: diff --git a/arch/um/sys-x86_64/ptrace.c b/arch/um/sys-x86_64/ptrace.c index 67e6368..f436136 100644 --- a/arch/um/sys-x86_64/ptrace.c +++ b/arch/um/sys-x86_64/ptrace.c @@ -179,15 +179,14 @@ long subarch_ptrace(struct task_struct *child, long request, unsigned long addr, unsigned long data) { int ret = -EIO; + void __user *datap = (void __user *) data; switch (request) { case PTRACE_GETFPXREGS: /* Get the child FPU state. */ - ret = get_fpregs((struct user_i387_struct __user *) data, - child); + ret = get_fpregs(datap, child); break; case PTRACE_SETFPXREGS: /* Set the child FPU state. */ - ret = set_fpregs((struct user_i387_struct __user *) data, - child); + ret = set_fpregs(datap, child); break; } |
