| #ifndef __LINUX_SWAP_FS_H |
| #define __LINUX_SWAP_FS_H |
| |
| /* The basic structures of the swap super block */ |
| #define SWAP_MAGIC_L 10 |
| #define SWAP_RESERVED_L (1024 - SWAP_MAGIC_L) |
| #define SWAP_MAGIC_1 "SWAP-SPACE" |
| #define SWAP_MAGIC_2 "SWAPSPACE2" |
| |
| /* Suspend signatures, located at same addr as swap magic */ |
| #define SUSP_MAGIC_L 9 |
| #define SUSP_MAGIC_1 "S1SUSPEND" |
| #define SUSP_MAGIC_2 "S2SUSPEND" |
| #define SUSP_MAGIC_U "ULSUSPEND" |
| |
| /* The superblock is the last block in the first page */ |
| #define SWAP_OFFSET() ((getpagesize() - 1024) >> 10) |
| |
| /* On-disk "super block" */ |
| struct swap_super_block { |
| char reserved[SWAP_RESERVED_L]; |
| char magic[SWAP_MAGIC_L]; |
| }; |
| |
| #endif |
