Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / kernel / exec_domain.c

diff --git a/kernel/kernel/exec_domain.c b/kernel/kernel/exec_domain.c
new file mode 100644 (file)
index 0000000..6873bb3
--- /dev/null
+++ b/kernel/kernel/exec_domain.c
@@ -0,0 +1,58 @@
+/*
+ * 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>
+#include <linux/fs_struct.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 execdomains_proc_open(struct inode *inode, struct file *file)
+{
+       return single_open(file, execdomains_proc_show, NULL);
+}
+
+static const struct file_operations execdomains_proc_fops = {
+       .open           = execdomains_proc_open,
+       .read           = seq_read,
+       .llseek         = seq_lseek,
+       .release        = single_release,
+};
+
+static int __init proc_execdomains_init(void)
+{
+       proc_create("execdomains", 0, NULL, &execdomains_proc_fops);
+       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;
+}