- struct { long tv_sec, tv_usec; } ktv[2];
- char *fakeaddr = ((char *)ru + sizeof(struct timeval [2]) - sizeof ktv);
- if (syscall2(__NR_getrusage, who, (long)fakeaddr) < 0)
- return -1;
- memcpy(ktv, fakeaddr, sizeof ktv);
- ru->ru_utime.tv_sec = ktv[0].tv_sec;
- ru->ru_utime.tv_usec = ktv[0].tv_usec;
- ru->ru_stime.tv_sec = ktv[1].tv_sec;
- ru->ru_stime.tv_usec = ktv[1].tv_usec;
- return 0;
+ int r;
+#ifdef SYS_getrusage_time64
+ long long kru64[18];
+ r = __syscall(SYS_getrusage_time64, who, kru64);
+ if (!r) {
+ ru->ru_utime = (struct timeval)
+ { .tv_sec = kru64[0], .tv_usec = kru64[1] };
+ ru->ru_stime = (struct timeval)
+ { .tv_sec = kru64[2], .tv_usec = kru64[3] };
+ char *slots = (char *)&ru->ru_maxrss;
+ for (int i=0; i<14; i++)
+ *(long *)(slots + i*sizeof(long)) = kru64[4+i];
+ }
+ if (SYS_getrusage_time64 == SYS_getrusage || r != -ENOSYS)
+ return __syscall_ret(r);
+#endif
+ char *dest = (char *)&ru->ru_maxrss - 4*sizeof(long);
+ r = __syscall(SYS_getrusage, who, dest);
+ if (!r && sizeof(time_t) > sizeof(long)) {
+ long kru[4];
+ memcpy(kru, dest, 4*sizeof(long));
+ ru->ru_utime = (struct timeval)
+ { .tv_sec = kru[0], .tv_usec = kru[1] };
+ ru->ru_stime = (struct timeval)
+ { .tv_sec = kru[2], .tv_usec = kru[3] };
+ }
+ return __syscall_ret(r);