xen64: add identity irq->vector map

[linux-2.6-omap-h63xx.git] / kernel / ptrace.c

diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 5f8d452e8111b7a2e67b1de14b50ec544c22bfa1..e337390fce011dc0ea1d5eba1cf678553fb93b71 100644 (file)
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -121,7 +121,7 @@ int ptrace_check_attach(struct task_struct *child, int kill)
        return ret;
 }
 
-int __ptrace_may_attach(struct task_struct *task)
+int __ptrace_may_access(struct task_struct *task, unsigned int mode)
 {
        /* May we inspect the given task?
         * This check is used both for attaching with ptrace
@@ -148,16 +148,16 @@ int __ptrace_may_attach(struct task_struct *task)
        if (!dumpable && !capable(CAP_SYS_PTRACE))
                return -EPERM;
 
-       return security_ptrace(current, task);
+       return security_ptrace(current, task, mode);
 }
 
-int ptrace_may_attach(struct task_struct *task)
+bool ptrace_may_access(struct task_struct *task, unsigned int mode)
 {
        int err;
        task_lock(task);
-       err = __ptrace_may_attach(task);
+       err = __ptrace_may_access(task, mode);
        task_unlock(task);
-       return !err;
+       return (!err ? true : false);
 }
 
 int ptrace_attach(struct task_struct *task)
@@ -168,8 +168,6 @@ int ptrace_attach(struct task_struct *task)
        audit_ptrace(task);
 
        retval = -EPERM;
-       if (task->pid <= 1)
-               goto out;
        if (same_thread_group(task, current))
                goto out;
 
@@ -197,7 +195,7 @@ repeat:
        /* the same process cannot be attached many times */
        if (task->ptrace & PT_PTRACED)
                goto bad;
-       retval = __ptrace_may_attach(task);
+       retval = __ptrace_may_access(task, PTRACE_MODE_ATTACH);
        if (retval)
                goto bad;
 
@@ -496,7 +494,8 @@ int ptrace_traceme(void)
         */
        task_lock(current);
        if (!(current->ptrace & PT_PTRACED)) {
-               ret = security_ptrace(current->parent, current);
+               ret = security_ptrace(current->parent, current,
+                                     PTRACE_MODE_ATTACH);
                /*
                 * Set the ptrace bit in the process ptrace flags.
                 */
@@ -521,12 +520,6 @@ struct task_struct *ptrace_get_task_struct(pid_t pid)
 {
        struct task_struct *child;
 
-       /*
-        * Tracing init is not allowed.
-        */
-       if (pid == 1)
-               return ERR_PTR(-EPERM);
-
        read_lock(&tasklist_lock);
        child = find_task_by_vpid(pid);
        if (child)
@@ -542,7 +535,6 @@ struct task_struct *ptrace_get_task_struct(pid_t pid)
 #define arch_ptrace_attach(child)      do { } while (0)
 #endif
 
-#ifndef __ARCH_SYS_PTRACE
 asmlinkage long sys_ptrace(long request, long pid, long addr, long data)
 {
        struct task_struct *child;
@@ -590,7 +582,6 @@ asmlinkage long sys_ptrace(long request, long pid, long addr, long data)
        unlock_kernel();
        return ret;
 }
-#endif /* __ARCH_SYS_PTRACE */
 
 int generic_ptrace_peekdata(struct task_struct *tsk, long addr, long data)
 {