1/* Copyright (C) 2002-2025 Free Software Foundation, Inc.
 2   This file is part of the GNU C Library.
 3
 4   The GNU C Library is free software; you can redistribute it and/or
 5   modify it under the terms of the GNU Lesser General Public
 6   License as published by the Free Software Foundation; either
 7   version 2.1 of the License, or (at your option) any later version.
 8
 9   The GNU C Library is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12   Lesser General Public License for more details.
13
14   You should have received a copy of the GNU Lesser General Public
15   License along with the GNU C Library; if not, see
16   <https://www.gnu.org/licenses/>.  */
17
18/* Taken verbatim from Linux 2.6 (include/linux/personality.h).  */
19
20#ifndef _SYS_PERSONALITY_H
21#define _SYS_PERSONALITY_H 1
22
23#include <features.h>
24
25/* Flags for bug emulation.
26   These occupy the top three bytes.  */
27enum
28  {
29    UNAME26 = 0x0020000,
30    ADDR_NO_RANDOMIZE = 0x0040000,
31    FDPIC_FUNCPTRS = 0x0080000,
32    MMAP_PAGE_ZERO = 0x0100000,
33    ADDR_COMPAT_LAYOUT = 0x0200000,
34    READ_IMPLIES_EXEC = 0x0400000,
35    ADDR_LIMIT_32BIT = 0x0800000,
36    SHORT_INODE = 0x1000000,
37    WHOLE_SECONDS = 0x2000000,
38    STICKY_TIMEOUTS = 0x4000000,
39    ADDR_LIMIT_3GB = 	0x8000000
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.  */
46enum
47  {
48    PER_LINUX = 0x0000,
49    PER_LINUX_32BIT = 0x0000 | ADDR_LIMIT_32BIT,
50    PER_LINUX_FDPIC = 0x0000 | FDPIC_FUNCPTRS,
51    PER_SVR4 = 0x0001 | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
52    PER_SVR3 = 0x0002 | STICKY_TIMEOUTS | SHORT_INODE,
53    PER_SCOSVR3 = 0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS | SHORT_INODE,
54    PER_OSR5 = 0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS,
55    PER_WYSEV386 = 0x0004 | STICKY_TIMEOUTS | SHORT_INODE,
56    PER_ISCR4 = 0x0005 | STICKY_TIMEOUTS,
57    PER_BSD = 0x0006,
58    PER_SUNOS = 0x0006 | STICKY_TIMEOUTS,
59    PER_XENIX = 0x0007 | STICKY_TIMEOUTS | SHORT_INODE,
60    PER_LINUX32 = 0x0008,
61    PER_LINUX32_3GB = 0x0008 | ADDR_LIMIT_3GB,
62    PER_IRIX32 = 0x0009 | STICKY_TIMEOUTS,	/* IRIX5 32-bit */
63    PER_IRIXN32 = 0x000a | STICKY_TIMEOUTS,	/* IRIX6 new 32-bit */
64    PER_IRIX64 = 0x000b | STICKY_TIMEOUTS,	/* IRIX6 64-bit */
65    PER_RISCOS = 0x000c,
66    PER_SOLARIS = 0x000d | STICKY_TIMEOUTS,
67    PER_UW7 = 0x000e | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
68    PER_OSF4 = 0x000f,
69    PER_HPUX = 0x0010,
70    PER_MASK = 0x00ff,
71  };
72
73__BEGIN_DECLS
74
75/* Set different ABIs (personalities).  */
76extern int personality (unsigned long int __persona) __THROW;
77
78__END_DECLS
79
80#endif /* sys/personality.h */