50 lines
1.2 KiB
C
50 lines
1.2 KiB
C
#include <sys/sysinfo.h>
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#include "syscall.h"
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#define klong long long
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#define kulong unsigned long long
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struct kernel_sysinfo {
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klong uptime;
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kulong loads[3];
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kulong totalram;
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kulong freeram;
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kulong sharedram;
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kulong bufferram;
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kulong totalswap;
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kulong freeswap;
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short procs;
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short pad;
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kulong totalhigh;
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kulong freehigh;
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unsigned mem_unit;
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};
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int __lsysinfo(struct sysinfo *info)
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{
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struct kernel_sysinfo tmp;
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int ret = syscall(SYS_sysinfo, &tmp);
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if(ret == -1) return ret;
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info->uptime = tmp.uptime;
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info->loads[0] = tmp.loads[0];
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info->loads[1] = tmp.loads[1];
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info->loads[2] = tmp.loads[2];
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kulong shifts;
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kulong max = tmp.totalram | tmp.totalswap;
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__asm__("bsr %1,%0" : "=r"(shifts) : "r"(max));
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shifts = shifts >= 32 ? shifts - 31 : 0;
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info->totalram = tmp.totalram >> shifts;
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info->freeram = tmp.freeram >> shifts;
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info->sharedram = tmp.sharedram >> shifts;
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info->bufferram = tmp.bufferram >> shifts;
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info->totalswap = tmp.totalswap >> shifts;
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info->freeswap = tmp.freeswap >> shifts;
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info->procs = tmp.procs ;
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info->totalhigh = tmp.totalhigh >> shifts;
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info->freehigh = tmp.freehigh >> shifts;
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info->mem_unit = (tmp.mem_unit ? tmp.mem_unit : 1) << shifts;
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return ret;
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}
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weak_alias(__lsysinfo, sysinfo);
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