- pid_t ret = syscall4(__NR_wait4, pid, (long)status, options, (long)usage);
- /* Fixup kernel time_t... */
- if (usage) {
- long kusage[4];
- memcpy(kusage, usage, sizeof kusage);
- memmove((struct timeval *)usage + 2, (long *)usage + 4, sizeof *usage - 2*sizeof(struct timeval));
- usage->ru_utime = (struct timeval){ kusage[0], kusage[1] };
- usage->ru_stime = (struct timeval){ kusage[2], kusage[3] };
+ int r;
+#ifdef SYS_wait4_time64
+ if (ru) {
+ long long kru64[18];
+ r = __syscall(SYS_wait4_time64, pid, status, options, 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_wait4_time64 == SYS_wait4 || r != -ENOSYS)
+ return __syscall_ret(r);