| 1 | #include <sys/sysinfo.h> |
| 2 | #include "syscall.h" |
| 3 | |
| 4 | #define klong long long |
| 5 | #define kulong unsigned long long |
| 6 | |
| 7 | struct kernel_sysinfo { |
| 8 | klong uptime; |
| 9 | kulong loads[3]; |
| 10 | kulong totalram; |
| 11 | kulong freeram; |
| 12 | kulong sharedram; |
| 13 | kulong bufferram; |
| 14 | kulong totalswap; |
| 15 | kulong freeswap; |
| 16 | short procs; |
| 17 | short pad; |
| 18 | kulong totalhigh; |
| 19 | kulong freehigh; |
| 20 | unsigned mem_unit; |
| 21 | }; |
| 22 | |
| 23 | int __lsysinfo(struct sysinfo *info) |
| 24 | { |
| 25 | struct kernel_sysinfo tmp; |
| 26 | int ret = syscall(SYS_sysinfo, &tmp); |
| 27 | if(ret == -1) return ret; |
| 28 | info->uptime = tmp.uptime; |
| 29 | info->loads[0] = tmp.loads[0]; |
| 30 | info->loads[1] = tmp.loads[1]; |
| 31 | info->loads[2] = tmp.loads[2]; |
| 32 | kulong shifts; |
| 33 | kulong max = tmp.totalram | tmp.totalswap; |
| 34 | __asm__("bsr %1,%0" : "=r"(shifts) : "r"(max)); |
| 35 | shifts = shifts >= 32 ? shifts - 31 : 0; |
| 36 | info->totalram = tmp.totalram >> shifts; |
| 37 | info->freeram = tmp.freeram >> shifts; |
| 38 | info->sharedram = tmp.sharedram >> shifts; |
| 39 | info->bufferram = tmp.bufferram >> shifts; |
| 40 | info->totalswap = tmp.totalswap >> shifts; |
| 41 | info->freeswap = tmp.freeswap >> shifts; |
| 42 | info->procs = tmp.procs ; |
| 43 | info->totalhigh = tmp.totalhigh >> shifts; |
| 44 | info->freehigh = tmp.freehigh >> shifts; |
| 45 | info->mem_unit = (tmp.mem_unit ? tmp.mem_unit : 1) << shifts; |
| 46 | return ret; |
| 47 | } |
| 48 | |
| 49 | weak_alias(__lsysinfo, sysinfo); |