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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /kernel/exec_domain.c
Initial import
Diffstat (limited to 'kernel/exec_domain.c')
-rw-r--r--kernel/exec_domain.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/kernel/exec_domain.c b/kernel/exec_domain.c
new file mode 100644
index 000000000..6873bb3e6
--- /dev/null
+++ b/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;
+}