include/linux/personality.h

   1 #ifndef _PERSONALITY_H
   2 #define _PERSONALITY_H
   3
   4 #include <linux/linkage.h>
   5 #include <linux/ptrace.h>
   6 #include <asm/current.h>
   7
   8 /* Flags for bug emulation. These occupy the top three bytes. */
   9 #define STICKY_TIMEOUTS         0x4000000
  10 #define WHOLE_SECONDS           0x2000000
  11 #define ADDR_LIMIT_32BIT        0x0800000
  12
  13 /* Personality types. These go in the low byte. Avoid using the top bit,
  14  * it will conflict with error returns.
  15  */
  16 #define PER_MASK                (0x00ff)
  17 #define PER_LINUX               (0x0000)
  18 #define PER_LINUX_32BIT         (0x0000 | ADDR_LIMIT_32BIT)
  19 #define PER_SVR4                (0x0001 | STICKY_TIMEOUTS)
  20 #define PER_SVR3                (0x0002 | STICKY_TIMEOUTS)
  21 #define PER_SCOSVR3             (0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS)
  22 #define PER_WYSEV386            (0x0004 | STICKY_TIMEOUTS)
  23 #define PER_ISCR4               (0x0005 | STICKY_TIMEOUTS)
  24 #define PER_BSD                 (0x0006)
  25 #define PER_SUNOS               (PER_BSD | STICKY_TIMEOUTS)
  26 #define PER_XENIX               (0x0007 | STICKY_TIMEOUTS)
  27 #define PER_LINUX32             (0x0008)
  28 #define PER_IRIX32              (0x0009 | STICKY_TIMEOUTS) /* IRIX5 32-bit     */
  29 #define PER_IRIXN32             (0x000a | STICKY_TIMEOUTS) /* IRIX6 new 32-bit */
  30 #define PER_IRIX64              (0x000b | STICKY_TIMEOUTS) /* IRIX6 64-bit     */
  31 #define PER_RISCOS              (0x000c)
  32 #define PER_SOLARIS             (0x000d | STICKY_TIMEOUTS)
  33
  34 /* Prototype for an lcall7 syscall handler. */
  35 typedef void (*lcall7_func)(int, struct pt_regs *);
  36
  37
  38 /* Description of an execution domain - personality range supported,
  39  * lcall7 syscall handler, start up / shut down functions etc.
  40  * N.B. The name and lcall7 handler must be where they are since the
  41  * offset of the handler is hard coded in kernel/sys_call.S.
  42  */
  43 struct exec_domain {
  44         const char *name;
  45         lcall7_func handler;
  46         unsigned char pers_low, pers_high;
  47         unsigned long * signal_map;
  48         unsigned long * signal_invmap;
  49         struct module * module;
  50         struct exec_domain *next;
  51 };
  52
  53 extern struct exec_domain default_exec_domain;
  54
  55 extern int register_exec_domain(struct exec_domain *it);
  56 extern int unregister_exec_domain(struct exec_domain *it);
  57 #define put_exec_domain(it) \
  58         if (it && it->module) __MOD_DEC_USE_COUNT(it->module);
  59 #define get_exec_domain(it) \
  60         if (it && it->module) __MOD_INC_USE_COUNT(it->module);
  61 extern void __set_personality(unsigned long personality);
  62 #define set_personality(pers) do {      \
  63         if (current->personality != pers) \
  64                 __set_personality(pers); \
  65 } while (0)
  66 asmlinkage long sys_personality(unsigned long personality);
  67
  68 #endif /* _PERSONALITY_H */