first commit

1 files changed, 54 insertions, 0 deletions

diff --git a/include/linux/personality.h b/include/linux/personality.h
new file mode 100644
index 000000000..646c0a7d5
--- /dev/null
+++ b/include/linux/personality.h
@@ -0,0 +1,54 @@
+#ifndef _LINUX_PERSONALITY_H
+#define _LINUX_PERSONALITY_H
+
+#include <uapi/linux/personality.h>
+
+
+/*
+ * Handling of different ABIs (personalities).
+ */
+
+struct exec_domain;
+struct pt_regs;
+
+extern int		register_exec_domain(struct exec_domain *);
+extern int		unregister_exec_domain(struct exec_domain *);
+extern int		__set_personality(unsigned int);
+
+
+/*
+ * Description of an execution domain.
+ * 
+ * The first two members are refernced from assembly source
+ * and should stay where they are unless explicitly needed.
+ */
+typedef void (*handler_t)(int, struct pt_regs *);
+
+struct exec_domain {
+	const char		*name;		/* name of the execdomain */
+	handler_t		handler;	/* handler for syscalls */
+	unsigned char		pers_low;	/* lowest personality */
+	unsigned char		pers_high;	/* highest personality */
+	unsigned long		*signal_map;	/* signal mapping */
+	unsigned long		*signal_invmap;	/* reverse signal mapping */
+	struct map_segment	*err_map;	/* error mapping */
+	struct map_segment	*socktype_map;	/* socket type mapping */
+	struct map_segment	*sockopt_map;	/* socket option mapping */
+	struct map_segment	*af_map;	/* address family mapping */
+	struct module		*module;	/* module context of the ed. */
+	struct exec_domain	*next;		/* linked list (internal) */
+};
+
+/*
+ * Return the base personality without flags.
+ */
+#define personality(pers)	(pers & PER_MASK)
+
+
+/*
+ * Change personality of the currently running process.
+ */
+#define set_personality(pers) \
+	((current->personality == (pers)) ? 0 : __set_personality(pers))
+
+#endif /* _LINUX_PERSONALITY_H */