1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef _UAPI_LINUX_PERSONALITY_H
3#define _UAPI_LINUX_PERSONALITY_H
4
5
6/*
7 * Flags for bug emulation.
8 *
9 * These occupy the top three bytes.
10 */
11enum {
12	UNAME26	=               0x0020000,
13	ADDR_NO_RANDOMIZE = 	0x0040000,	/* disable randomization of VA space */
14	FDPIC_FUNCPTRS =	0x0080000,	/* userspace function ptrs point to descriptors
15						 * (signal handling)
16						 */
17	MMAP_PAGE_ZERO =	0x0100000,
18	ADDR_COMPAT_LAYOUT =	0x0200000,
19	READ_IMPLIES_EXEC =	0x0400000,
20	ADDR_LIMIT_32BIT =	0x0800000,
21	SHORT_INODE =		0x1000000,
22	WHOLE_SECONDS =		0x2000000,
23	STICKY_TIMEOUTS	=	0x4000000,
24	ADDR_LIMIT_3GB = 	0x8000000,
25};
26
27/*
28 * Security-relevant compatibility flags that must be
29 * cleared upon setuid or setgid exec:
30 */
31#define PER_CLEAR_ON_SETID (READ_IMPLIES_EXEC  | \
32			    ADDR_NO_RANDOMIZE  | \
33			    ADDR_COMPAT_LAYOUT | \
34			    MMAP_PAGE_ZERO)
35
36/*
37 * Personality types.
38 *
39 * These go in the low byte.  Avoid using the top bit, it will
40 * conflict with error returns.
41 */
42enum {
43	PER_LINUX =		0x0000,
44	PER_LINUX_32BIT =	0x0000 | ADDR_LIMIT_32BIT,
45	PER_LINUX_FDPIC =	0x0000 | FDPIC_FUNCPTRS,
46	PER_SVR4 =		0x0001 | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
47	PER_SVR3 =		0x0002 | STICKY_TIMEOUTS | SHORT_INODE,
48	PER_SCOSVR3 =		0x0003 | STICKY_TIMEOUTS |
49					 WHOLE_SECONDS | SHORT_INODE,
50	PER_OSR5 =		0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS,
51	PER_WYSEV386 =		0x0004 | STICKY_TIMEOUTS | SHORT_INODE,
52	PER_ISCR4 =		0x0005 | STICKY_TIMEOUTS,
53	PER_BSD =		0x0006,
54	PER_SUNOS =		0x0006 | STICKY_TIMEOUTS,
55	PER_XENIX =		0x0007 | STICKY_TIMEOUTS | SHORT_INODE,
56	PER_LINUX32 =		0x0008,
57	PER_LINUX32_3GB =	0x0008 | ADDR_LIMIT_3GB,
58	PER_IRIX32 =		0x0009 | STICKY_TIMEOUTS,/* IRIX5 32-bit */
59	PER_IRIXN32 =		0x000a | STICKY_TIMEOUTS,/* IRIX6 new 32-bit */
60	PER_IRIX64 =		0x000b | STICKY_TIMEOUTS,/* IRIX6 64-bit */
61	PER_RISCOS =		0x000c,
62	PER_SOLARIS =		0x000d | STICKY_TIMEOUTS,
63	PER_UW7 =		0x000e | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
64	PER_OSF4 =		0x000f,			 /* OSF/1 v4 */
65	PER_HPUX =		0x0010,
66	PER_MASK =		0x00ff,
67};
68
69
70#endif /* _UAPI_LINUX_PERSONALITY_H */
71