include/linux/personality.h

   1 #ifndef _LINUX_PERSONALITY_H
   2 #define _LINUX_PERSONALITY_H
   3
   4 #include <uapi/linux/personality.h>
   5
   6
   7 /*
   8  * Handling of different ABIs (personalities).
   9  */
  10
  11 struct exec_domain;
  12 struct pt_regs;
  13
  14 extern int              register_exec_domain(struct exec_domain *);
  15 extern int              unregister_exec_domain(struct exec_domain *);
  16 extern int              __set_personality(unsigned int);
  17
  18
  19 /*
  20  * Description of an execution domain.
  21  *
  22  * The first two members are refernced from assembly source
  23  * and should stay where they are unless explicitly needed.
  24  */
  25 typedef void (*handler_t)(int, struct pt_regs *);
  26
  27 struct exec_domain {
  28         const char              *name;          /* name of the execdomain */
  29         handler_t               handler;        /* handler for syscalls */
  30         unsigned char           pers_low;       /* lowest personality */
  31         unsigned char           pers_high;      /* highest personality */
  32         unsigned long           *signal_map;    /* signal mapping */
  33         unsigned long           *signal_invmap; /* reverse signal mapping */
  34         struct map_segment      *err_map;       /* error mapping */
  35         struct map_segment      *socktype_map;  /* socket type mapping */
  36         struct map_segment      *sockopt_map;   /* socket option mapping */
  37         struct map_segment      *af_map;        /* address family mapping */
  38         struct module           *module;        /* module context of the ed. */
  39         struct exec_domain      *next;          /* linked list (internal) */
  40 };
  41
  42 /*
  43  * Return the base personality without flags.
  44  */
  45 #define personality(pers)       (pers & PER_MASK)
  46
  47
  48 /*
  49  * Change personality of the currently running process.
  50  */
  51 #define set_personality(pers) \
  52         ((current->personality == (pers)) ? 0 : __set_personality(pers))
  53
  54 #endif /* _LINUX_PERSONALITY_H */