change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/kernel/capability.c
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@@ -93,9 +93,7 @@
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 		break;
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 	case _LINUX_CAPABILITY_VERSION_2:
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 		warn_deprecated_v2();
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-		/*
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-		 * fall through - v3 is otherwise equivalent to v2.
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-		 */
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+		fallthrough;	/* v3 is otherwise equivalent to v2 */
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 	case _LINUX_CAPABILITY_VERSION_3:
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 		*tocopy = _LINUX_CAPABILITY_U32S_3;
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 		break;
..
..
@@ -418,6 +416,25 @@
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 EXPORT_SYMBOL(ns_capable_noaudit);
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 /**
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+ * ns_capable_setid - Determine if the current task has a superior capability
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+ * in effect, while signalling that this check is being done from within a
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+ * setid or setgroups syscall.
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+ * @ns:  The usernamespace we want the capability in
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+ * @cap: The capability to be tested for
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+ *
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+ * Return true if the current task has the given superior capability currently
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+ * available for use, false if not.
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+ *
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+ * This sets PF_SUPERPRIV on the task if the capability is available on the
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+ * assumption that it's about to be used.
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+ */
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+bool ns_capable_setid(struct user_namespace *ns, int cap)
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+{
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+	return ns_capable_common(ns, cap, CAP_OPT_INSETID);
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+}
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+EXPORT_SYMBOL(ns_capable_setid);
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+
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+/**
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  * capable - Determine if the current task has a superior capability in effect
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  * @cap: The capability to be tested for
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  *