personality.h

Go to the documentation of this file.

#ifndef _LINUX_PERSONALITY_H
#define _LINUX_PERSONALITY_H

#include <uapi/linux/personality.h>


/*
 * Handling of different ABIs (personalities).
 */

struct exec_domain;
struct pt_regs;

extern int      register_exec_domain(struct exec_domain *);
extern int      unregister_exec_domain(struct exec_domain *);
extern int      __set_personality(unsigned int);


/*
 * Description of an execution domain.
 * 
 * The first two members are refernced from assembly source
 * and should stay where they are unless explicitly needed.
 */
typedef void (*handler_t)(int, struct pt_regs *);

struct exec_domain {
    const char      *name;      /* name of the execdomain */
    handler_t       handler;    /* handler for syscalls */
    unsigned char       pers_low;   /* lowest personality */
    unsigned char       pers_high;  /* highest personality */
    unsigned long       *signal_map;    /* signal mapping */
    unsigned long       *signal_invmap; /* reverse signal mapping */
    struct map_segment  *err_map;   /* error mapping */
    struct map_segment  *socktype_map;  /* socket type mapping */
    struct map_segment  *sockopt_map;   /* socket option mapping */
    struct map_segment  *af_map;    /* address family mapping */
    struct module       *module;    /* module context of the ed. */
    struct exec_domain  *next;      /* linked list (internal) */
};

/*
 * Return the base personality without flags.
 */
#define personality(pers)   (pers & PER_MASK)


/*
 * Change personality of the currently running process.
 */
#define set_personality(pers) \
    ((current->personality == (pers)) ? 0 : __set_personality(pers))

#endif /* _LINUX_PERSONALITY_H */