1 #ifndef _LINUX_PERSONALITY_H
2 #define _LINUX_PERSONALITY_H
7 * Handling of different ABIs (personalities).
13 extern int register_exec_domain(struct exec_domain
*);
14 extern int unregister_exec_domain(struct exec_domain
*);
15 extern int __set_personality(unsigned int);
17 #endif /* __KERNEL__ */
20 * Flags for bug emulation.
22 * These occupy the top three bytes.
25 ADDR_NO_RANDOMIZE
= 0x0040000, /* disable randomization of VA space */
26 FDPIC_FUNCPTRS
= 0x0080000, /* userspace function ptrs point to descriptors
29 MMAP_PAGE_ZERO
= 0x0100000,
30 ADDR_COMPAT_LAYOUT
= 0x0200000,
31 READ_IMPLIES_EXEC
= 0x0400000,
32 ADDR_LIMIT_32BIT
= 0x0800000,
33 SHORT_INODE
= 0x1000000,
34 WHOLE_SECONDS
= 0x2000000,
35 STICKY_TIMEOUTS
= 0x4000000,
36 ADDR_LIMIT_3GB
= 0x8000000,
40 * Security-relevant compatibility flags that must be
41 * cleared upon setuid or setgid exec:
43 #define PER_CLEAR_ON_SETID (READ_IMPLIES_EXEC | \
45 ADDR_COMPAT_LAYOUT | \
51 * These go in the low byte. Avoid using the top bit, it will
52 * conflict with error returns.
56 PER_LINUX_32BIT
= 0x0000 | ADDR_LIMIT_32BIT
,
57 PER_LINUX_FDPIC
= 0x0000 | FDPIC_FUNCPTRS
,
58 PER_SVR4
= 0x0001 | STICKY_TIMEOUTS
| MMAP_PAGE_ZERO
,
59 PER_SVR3
= 0x0002 | STICKY_TIMEOUTS
| SHORT_INODE
,
60 PER_SCOSVR3
= 0x0003 | STICKY_TIMEOUTS
|
61 WHOLE_SECONDS
| SHORT_INODE
,
62 PER_OSR5
= 0x0003 | STICKY_TIMEOUTS
| WHOLE_SECONDS
,
63 PER_WYSEV386
= 0x0004 | STICKY_TIMEOUTS
| SHORT_INODE
,
64 PER_ISCR4
= 0x0005 | STICKY_TIMEOUTS
,
66 PER_SUNOS
= 0x0006 | STICKY_TIMEOUTS
,
67 PER_XENIX
= 0x0007 | STICKY_TIMEOUTS
| SHORT_INODE
,
69 PER_LINUX32_3GB
= 0x0008 | ADDR_LIMIT_3GB
,
70 PER_IRIX32
= 0x0009 | STICKY_TIMEOUTS
,/* IRIX5 32-bit */
71 PER_IRIXN32
= 0x000a | STICKY_TIMEOUTS
,/* IRIX6 new 32-bit */
72 PER_IRIX64
= 0x000b | STICKY_TIMEOUTS
,/* IRIX6 64-bit */
74 PER_SOLARIS
= 0x000d | STICKY_TIMEOUTS
,
75 PER_UW7
= 0x000e | STICKY_TIMEOUTS
| MMAP_PAGE_ZERO
,
76 PER_OSF4
= 0x000f, /* OSF/1 v4 */
84 * Description of an execution domain.
86 * The first two members are refernced from assembly source
87 * and should stay where they are unless explicitly needed.
89 typedef void (*handler_t
)(int, struct pt_regs
*);
92 const char *name
; /* name of the execdomain */
93 handler_t handler
; /* handler for syscalls */
94 unsigned char pers_low
; /* lowest personality */
95 unsigned char pers_high
; /* highest personality */
96 unsigned long *signal_map
; /* signal mapping */
97 unsigned long *signal_invmap
; /* reverse signal mapping */
98 struct map_segment
*err_map
; /* error mapping */
99 struct map_segment
*socktype_map
; /* socket type mapping */
100 struct map_segment
*sockopt_map
; /* socket option mapping */
101 struct map_segment
*af_map
; /* address family mapping */
102 struct module
*module
; /* module context of the ed. */
103 struct exec_domain
*next
; /* linked list (internal) */
107 * Return the base personality without flags.
109 #define personality(pers) (pers & PER_MASK)
113 * Change personality of the currently running process.
115 #define set_personality(pers) \
116 ((current->personality == (pers)) ? 0 : __set_personality(pers))
118 #endif /* __KERNEL__ */
120 #endif /* _LINUX_PERSONALITY_H */
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