Commit | Line | Data |
---|---|---|
1da177e4 LT |
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 | #ifndef __ASSEMBLY__ | |
15 | struct user_desc { | |
16 | unsigned int entry_number; | |
17 | unsigned long base_addr; | |
18 | unsigned int limit; | |
19 | unsigned int seg_32bit:1; | |
20 | unsigned int contents:2; | |
21 | unsigned int read_exec_only:1; | |
22 | unsigned int limit_in_pages:1; | |
23 | unsigned int seg_not_present:1; | |
24 | unsigned int useable:1; | |
25 | }; | |
26 | ||
27 | #define MODIFY_LDT_CONTENTS_DATA 0 | |
28 | #define MODIFY_LDT_CONTENTS_STACK 1 | |
29 | #define MODIFY_LDT_CONTENTS_CODE 2 | |
30 | ||
31 | #endif /* !__ASSEMBLY__ */ | |
32 | #endif |