#ifndef _LINUX_PERSONALITY_H
#define _LINUX_PERSONALITY_H
+#ifdef __KERNEL__
+
/*
* Handling of different ABIs (personalities).
*/
extern int unregister_exec_domain(struct exec_domain *);
extern int __set_personality(unsigned long);
-
-/*
- * Sysctl variables related to binary emulation.
- */
-extern unsigned long abi_defhandler_coff;
-extern unsigned long abi_defhandler_elf;
-extern unsigned long abi_defhandler_lcall7;
-extern unsigned long abi_defhandler_libcso;
-extern int abi_fake_utsname;
-
+#endif /* __KERNEL__ */
/*
* Flags for bug emulation.
* These occupy the top three bytes.
*/
enum {
+ ADDR_NO_RANDOMIZE = 0x0040000, /* disable randomization of VA space */
+ FDPIC_FUNCPTRS = 0x0080000, /* userspace function ptrs point to descriptors
+ * (signal handling)
+ */
MMAP_PAGE_ZERO = 0x0100000,
+ ADDR_COMPAT_LAYOUT = 0x0200000,
+ READ_IMPLIES_EXEC = 0x0400000,
ADDR_LIMIT_32BIT = 0x0800000,
SHORT_INODE = 0x1000000,
WHOLE_SECONDS = 0x2000000,
ADDR_LIMIT_3GB = 0x8000000,
};
+/*
+ * Security-relevant compatibility flags that must be
+ * cleared upon setuid or setgid exec:
+ */
+#define PER_CLEAR_ON_SETID (READ_IMPLIES_EXEC|ADDR_NO_RANDOMIZE)
+
/*
* Personality types.
*
enum {
PER_LINUX = 0x0000,
PER_LINUX_32BIT = 0x0000 | ADDR_LIMIT_32BIT,
+ PER_LINUX_FDPIC = 0x0000 | FDPIC_FUNCPTRS,
PER_SVR4 = 0x0001 | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
PER_SVR3 = 0x0002 | STICKY_TIMEOUTS | SHORT_INODE,
PER_SCOSVR3 = 0x0003 | STICKY_TIMEOUTS |
PER_MASK = 0x00ff,
};
+#ifdef __KERNEL__
/*
* Description of an execution domain.
* Change personality of the currently running process.
*/
#define set_personality(pers) \
- ((current->personality == pers) ? 0 : __set_personality(pers))
+ ((current->personality == (pers)) ? 0 : __set_personality(pers))
+
+#endif /* __KERNEL__ */
#endif /* _LINUX_PERSONALITY_H */