kallsyms: move kallsyms_show_value() out of kallsyms.c

[linux-block.git] / kernel / kallsyms.c

diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c
index 8193e947aa10cec120a529dd6194daa480e00fdf..0f82c3d5a57dbb2ebf033664315a2bd404c95386 100644 (file)
--- a/kernel/kallsyms.c
+++ b/kernel/kallsyms.c
@@ -907,41 +907,6 @@ late_initcall(bpf_ksym_iter_register);
 
 #endif /* CONFIG_BPF_SYSCALL */
 
-static inline int kallsyms_for_perf(void)
-{
-#ifdef CONFIG_PERF_EVENTS
-       extern int sysctl_perf_event_paranoid;
-       if (sysctl_perf_event_paranoid <= 1)
-               return 1;
-#endif
-       return 0;
-}
-
-/*
- * We show kallsyms information even to normal users if we've enabled
- * kernel profiling and are explicitly not paranoid (so kptr_restrict
- * is clear, and sysctl_perf_event_paranoid isn't set).
- *
- * Otherwise, require CAP_SYSLOG (assuming kptr_restrict isn't set to
- * block even that).
- */
-bool kallsyms_show_value(const struct cred *cred)
-{
-       switch (kptr_restrict) {
-       case 0:
-               if (kallsyms_for_perf())
-                       return true;
-               fallthrough;
-       case 1:
-               if (security_capable(cred, &init_user_ns, CAP_SYSLOG,
-                                    CAP_OPT_NOAUDIT) == 0)
-                       return true;
-               fallthrough;
-       default:
-               return false;
-       }
-}
-
 static int kallsyms_open(struct inode *inode, struct file *file)
 {
        /*