Resguardo inicial

linux-7.2.3/kernel/entry/syscall-common.c

@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/entry-common.h>
+
+#define CREATE_TRACE_POINTS
+#include <trace/events/syscalls.h>
+
+/* Out of line to prevent tracepoint code duplication */
+
+long trace_syscall_enter(struct pt_regs *regs, long syscall)
+{
+	trace_sys_enter(regs, syscall);
+	/*
+	 * Probes or BPF hooks in the tracepoint may have changed the
+	 * system call number. Reread it.
+	 */
+	return syscall_get_nr(current, regs);
+}
+
+void trace_syscall_exit(struct pt_regs *regs, long ret)
+{
+	trace_sys_exit(regs, ret);
+}