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-rw-r--r--kernel/exec_domain.c46
1 files changed, 46 insertions, 0 deletions
diff --git a/kernel/exec_domain.c b/kernel/exec_domain.c
new file mode 100644
index 0000000000..33f07c5f25
--- /dev/null
+++ b/kernel/exec_domain.c
@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Handling of different ABIs (personalities).
+ *
+ * We group personalities into execution domains which have their
+ * own handlers for kernel entry points, signal mapping, etc...
+ *
+ * 2001-05-06 Complete rewrite, Christoph Hellwig (hch@infradead.org)
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/kmod.h>
+#include <linux/module.h>
+#include <linux/personality.h>
+#include <linux/proc_fs.h>
+#include <linux/sched.h>
+#include <linux/seq_file.h>
+#include <linux/syscalls.h>
+#include <linux/sysctl.h>
+#include <linux/types.h>
+
+#ifdef CONFIG_PROC_FS
+static int execdomains_proc_show(struct seq_file *m, void *v)
+{
+ seq_puts(m, "0-0\tLinux \t[kernel]\n");
+ return 0;
+}
+
+static int __init proc_execdomains_init(void)
+{
+ proc_create_single("execdomains", 0, NULL, execdomains_proc_show);
+ return 0;
+}
+module_init(proc_execdomains_init);
+#endif
+
+SYSCALL_DEFINE1(personality, unsigned int, personality)
+{
+ unsigned int old = current->personality;
+
+ if (personality != 0xffffffff)
+ set_personality(personality);
+
+ return old;
+}