root/include/linux/ldt.h

/* */

INCLUDED FROM

   1 /*
   2  * ldt.h
   3  *
   4  * Definitions of structures used with the modify_ldt system call.
   5  */
   6 #ifndef _LINUX_LDT_H
   7 #define _LINUX_LDT_H
   8 
   9 /* Maximum number of LDT entries supported. */
  10 #define LDT_ENTRIES     8192
  11 /* The size of each LDT entry. */
  12 #define LDT_ENTRY_SIZE  8
  13 
  14 struct modify_ldt_ldt_s {
  15         unsigned int  entry_number;
  16         unsigned long base_addr;
  17         unsigned int  limit;
  18         unsigned int  seg_32bit:1;
  19         unsigned int  contents:2;
  20         unsigned int  read_exec_only:1;
  21         unsigned int  limit_in_pages:1;
  22         unsigned int  seg_not_present:1;
  23 };
  24 
  25 #define MODIFY_LDT_CONTENTS_DATA        0
  26 #define MODIFY_LDT_CONTENTS_STACK       1
  27 #define MODIFY_LDT_CONTENTS_CODE        2
  28 
  29 extern int get_ldt(void *buffer);
  30 extern int set_ldt_entry(int entry, unsigned long base, unsigned int limit,
  31                          int seg_32bit_flag, int contents, int read_only_flag,
  32                          int limit_in_pages_flag);
  33 
  34 #endif

/* */