+#define MIN(a, b) ((a)<(b) ? (a) : (b))
+#define FIX(x) do{ if ((x)>=SYSCALL_RLIM_INFINITY) (x)=RLIM_INFINITY; }while(0)
+
+static int __setrlimit(int resource, const struct rlimit *rlim)
+{
+ unsigned long k_rlim[2];
+ struct rlimit tmp;
+ if (SYSCALL_RLIM_INFINITY != RLIM_INFINITY) {
+ tmp = *rlim;
+ FIX(tmp.rlim_cur);
+ FIX(tmp.rlim_max);
+ rlim = &tmp;
+ }
+ int ret = __syscall(SYS_prlimit64, 0, resource, rlim, 0);
+ if (ret != -ENOSYS) return ret;
+ k_rlim[0] = MIN(rlim->rlim_cur, MIN(-1UL, SYSCALL_RLIM_INFINITY));
+ k_rlim[1] = MIN(rlim->rlim_max, MIN(-1UL, SYSCALL_RLIM_INFINITY));
+ return __syscall(SYS_setrlimit, resource, k_rlim);
+}
+
+struct ctx {
+ const struct rlimit *rlim;
+ int res;
+ int err;
+};
+
+static void do_setrlimit(void *p)
+{
+ struct ctx *c = p;
+ if (c->err>0) return;
+ c->err = -__setrlimit(c->res, c->rlim);
+}
+