linux_persona.h revision 302962 
1/*
2 * $FreeBSD: stable/10/sys/compat/linux/linux_persona.h 302962 2016-07-17 15:07:33Z dchagin $
3 */
4
5#ifndef LINUX_PERSONALITY_H
6#define LINUX_PERSONALITY_H
7
8/*
9 * Flags for bug emulation.
10 *
11 * These occupy the top three bytes.
12 */
13enum {
14	LINUX_UNAME26 =			0x0020000,
15	LINUX_ADDR_NO_RANDOMIZE = 	0x0040000,	/* disable randomization
16							 * of VA space
17							 */
18	LINUX_FDPIC_FUNCPTRS =		0x0080000,	/* userspace function
19							 * ptrs point to descriptors
20							 * (signal handling)
21							 */
22	LINUX_MMAP_PAGE_ZERO =		0x0100000,
23	LINUX_ADDR_COMPAT_LAYOUT =	0x0200000,
24	LINUX_READ_IMPLIES_EXEC =	0x0400000,
25	LINUX_ADDR_LIMIT_32BIT =	0x0800000,
26	LINUX_SHORT_INODE =		0x1000000,
27	LINUX_WHOLE_SECONDS =		0x2000000,
28	LINUX_STICKY_TIMEOUTS =		0x4000000,
29	LINUX_ADDR_LIMIT_3GB =		0x8000000,
30};
31
32/*
33 * Security-relevant compatibility flags that must be
34 * cleared upon setuid or setgid exec:
35 */
36#define LINUX_PER_CLEAR_ON_SETID	(LINUX_READ_IMPLIES_EXEC  | \
37					LINUX_ADDR_NO_RANDOMIZE  | \
38					LINUX_ADDR_COMPAT_LAYOUT | \
39					LINUX_MMAP_PAGE_ZERO)
40
41/*
42 * Personality types.
43 *
44 * These go in the low byte.  Avoid using the top bit, it will
45 * conflict with error returns.
46 */
47enum {
48	LINUX_PER_LINUX =	0x0000,
49	LINUX_PER_LINUX_32BIT =	0x0000 | LINUX_ADDR_LIMIT_32BIT,
50	LINUX_PER_LINUX_FDPIC =	0x0000 | LINUX_FDPIC_FUNCPTRS,
51	LINUX_PER_LINUX32 =	0x0008,
52	LINUX_PER_LINUX32_3GB =	0x0008 | LINUX_ADDR_LIMIT_3GB,
53	LINUX_PER_MASK =	0x00ff,
54};
55
56#endif /* LINUX_PERSONALITY_H */
57