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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  */
11 enum {
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  */
42 enum {
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