3 files changed, 2 insertions, 1 deletions

diff --git a/include/linux/capability.h b/include/linux/capability.h
index dbc21c719ce6..d6088e2a7668 100644
--- a/include/linux/capability.h
+++ b/include/linux/capability.h
@@ -242,6 +242,7 @@ static inline bool ns_capable_noaudit(struct user_namespace *ns, int cap)
 #endif /* CONFIG_MULTIUSER */
 extern bool capable_wrt_inode_uidgid(const struct inode *inode, int cap);
 extern bool file_ns_capable(const struct file *file, struct user_namespace *ns, int cap);
+extern bool ptracer_capable(struct task_struct *tsk, struct user_namespace *ns);
 
 /* audit system wants to get cap info from files as well */
 extern int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data *cpu_caps);
diff --git a/include/linux/ptrace.h b/include/linux/ptrace.h
index 504c98a278d4..e13bfdf7f314 100644
--- a/include/linux/ptrace.h
+++ b/include/linux/ptrace.h
@@ -19,7 +19,6 @@
 #define PT_SEIZED       0x00010000      /* SEIZE used, enable new behavior */
 #define PT_PTRACED      0x00000001
 #define PT_DTRACE       0x00000002      /* delayed trace (used on m68k, i386) */
-#define PT_PTRACE_CAP   0x00000004      /* ptracer can follow suid-exec */
 
 #define PT_OPT_FLAG_SHIFT       3
 /* PT_TRACE_* event enable flags */
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 348f51b0ec92..e9f693598e15 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1656,6 +1656,7 @@ struct task_struct {
         struct list_head cpu_timers[3];
 
 /* process credentials */
+        const struct cred __rcu *ptracer_cred; /* Tracer's credentials at attach */
         const struct cred __rcu *real_cred; /* objective and real subjective task
                                          * credentials (COW) */
         const struct cred __rcu *cred;  /* effective (overridable) subjective task