tracehook: tracehook_expect_breakpoints

#include <linux/security.h>

struct linux_binprm;

/**

 * tracehook_expect_breakpoints - guess if task memory might be touched

 * @task:		current task, making a new mapping

 *

 * Return nonzero if @task is expected to want breakpoint insertion in

 * its memory at some point.  A zero return is no guarantee it won't

 * be done, but this is a hint that it's known to be likely.

 *

 * May be called with @task->mm->mmap_sem held for writing.

 */

static inline int tracehook_expect_breakpoints(struct task_struct *task)

{

	return (task_ptrace(task) & PT_PTRACED) != 0;

}

/**

 * tracehook_unsafe_exec - check for exec declared unsafe due to tracing

 * @task:		current task doing exec

#include <linux/pagemap.h>

#include <linux/slab.h>

#include <linux/vmalloc.h>

#include <linux/ptrace.h>

#include <linux/tracehook.h>

#include <linux/blkdev.h>

#include <linux/backing-dev.h>

#include <linux/mount.h>

	 * it's being traced - otherwise breakpoints set in it may interfere

	 * with another untraced process

	 */

	if ((flags & MAP_PRIVATE) && (current->ptrace & PT_PTRACED))

	if ((flags & MAP_PRIVATE) && tracehook_expect_breakpoints(current))

		vm_flags &= ~VM_MAYSHARE;

	return vm_flags;