| 1 | #ifndef _SYS_SYSMACROS_H |
| 2 | #define _SYS_SYSMACROS_H |
| 3 | |
| 4 | #define major(x) \ |
| 5 | ((unsigned)( (((x)>>31>>1) & 0xfffff000) | (((x)>>8) & 0x00000fff) )) |
| 6 | #define minor(x) \ |
| 7 | ((unsigned)( (((x)>>12) & 0xffffff00) | ((x) & 0x000000ff) )) |
| 8 | |
| 9 | #define makedev(x,y) ( \ |
| 10 | (((x)&0xfffff000ULL) << 32) | \ |
| 11 | (((x)&0x00000fffULL) << 8) | \ |
| 12 | (((y)&0xffffff00ULL) << 12) | \ |
| 13 | (((y)&0x000000ffULL)) ) |
| 14 | |
| 15 | #endif |