1 #ifndef _LINUX_PERSONALITY_H
2 #define _LINUX_PERSONALITY_H
5 * Handling of different ABIs (personalities).
11 extern int register_exec_domain(struct exec_domain *);
12 extern int unregister_exec_domain(struct exec_domain *);
13 extern int __set_personality(unsigned long);
17 * Sysctl variables related to binary emulation.
19 extern unsigned long abi_defhandler_coff;
20 extern unsigned long abi_defhandler_elf;
21 extern unsigned long abi_defhandler_lcall7;
22 extern unsigned long abi_defhandler_libcso;
23 extern int abi_fake_utsname;
27 * Flags for bug emulation.
29 * These occupy the top three bytes.
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,
43 * Security-relevant compatibility flags that must be
44 * cleared upon setuid or setgid exec:
46 #define PER_CLEAR_ON_SETID (READ_IMPLIES_EXEC)
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_SVR4 = 0x0001 | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
58 PER_SVR3 = 0x0002 | STICKY_TIMEOUTS | SHORT_INODE,
59 PER_SCOSVR3 = 0x0003 | STICKY_TIMEOUTS |
60 WHOLE_SECONDS | SHORT_INODE,
61 PER_OSR5 = 0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS,
62 PER_WYSEV386 = 0x0004 | STICKY_TIMEOUTS | SHORT_INODE,
63 PER_ISCR4 = 0x0005 | STICKY_TIMEOUTS,
65 PER_SUNOS = 0x0006 | STICKY_TIMEOUTS,
66 PER_XENIX = 0x0007 | STICKY_TIMEOUTS | SHORT_INODE,
68 PER_LINUX32_3GB = 0x0008 | ADDR_LIMIT_3GB,
69 PER_IRIX32 = 0x0009 | STICKY_TIMEOUTS,/* IRIX5 32-bit */
70 PER_IRIXN32 = 0x000a | STICKY_TIMEOUTS,/* IRIX6 new 32-bit */
71 PER_IRIX64 = 0x000b | STICKY_TIMEOUTS,/* IRIX6 64-bit */
73 PER_SOLARIS = 0x000d | STICKY_TIMEOUTS,
74 PER_UW7 = 0x000e | STICKY_TIMEOUTS | MMAP_PAGE_ZERO,
75 PER_OSF4 = 0x000f, /* OSF/1 v4 */
82 * Description of an execution domain.
84 * The first two members are refernced from assembly source
85 * and should stay where they are unless explicitly needed.
87 typedef void (*handler_t)(int, struct pt_regs *);
90 const char *name; /* name of the execdomain */
91 handler_t handler; /* handler for syscalls */
92 unsigned char pers_low; /* lowest personality */
93 unsigned char pers_high; /* highest personality */
94 unsigned long *signal_map; /* signal mapping */
95 unsigned long *signal_invmap; /* reverse signal mapping */
96 struct map_segment *err_map; /* error mapping */
97 struct map_segment *socktype_map; /* socket type mapping */
98 struct map_segment *sockopt_map; /* socket option mapping */
99 struct map_segment *af_map; /* address family mapping */
100 struct module *module; /* module context of the ed. */
101 struct exec_domain *next; /* linked list (internal) */
105 * Return the base personality without flags.
107 #define personality(pers) (pers & PER_MASK)
110 * Personality of the currently running process.
112 #define get_personality (current->personality)
115 * Change personality of the currently running process.
117 #define set_personality(pers) \
118 ((current->personality == pers) ? 0 : __set_personality(pers))
120 #endif /* _LINUX_PERSONALITY_H */