#include <sys/resource.h>
+#include <errno.h>
#include "syscall.h"
#include "libc.h"
+#define MIN(a, b) ((a)<(b) ? (a) : (b))
+
+int __setrlimit(int resource, const struct rlimit *rlim)
+{
+ unsigned long k_rlim[2];
+ int ret = __syscall(SYS_prlimit64, 0, resource, rlim, 0);
+ if (ret != -ENOSYS) return ret;
+ k_rlim[0] = MIN(rlim->rlim_cur, -1UL);
+ k_rlim[1] = MIN(rlim->rlim_max, -1UL);
+ 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) return;
+ c->err = -__setrlimit(c->res, c->rlim);
+}
+
int setrlimit(int resource, const struct rlimit *rlim)
{
- long k_rlim[2] = { rlim->rlim_cur, rlim->rlim_max };
- return syscall(SYS_setrlimit, resource, k_rlim);
+ struct ctx c = { .res = resource, .rlim = rlim };
+ __synccall(do_setrlimit, &c);
+ if (c.err) {
+ errno = c.err;
+ return -1;
+ }
+ return 0;
}
LFS64(setrlimit);